WO2012057481A2 - Chaudière de production d'eau chaude de petit volume non motorisée, et disconnecteur hydraulique pour la chaudière de production d'eau chaude de petit volume non motorisée - Google Patents

Chaudière de production d'eau chaude de petit volume non motorisée, et disconnecteur hydraulique pour la chaudière de production d'eau chaude de petit volume non motorisée Download PDF

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Publication number
WO2012057481A2
WO2012057481A2 PCT/KR2011/007938 KR2011007938W WO2012057481A2 WO 2012057481 A2 WO2012057481 A2 WO 2012057481A2 KR 2011007938 W KR2011007938 W KR 2011007938W WO 2012057481 A2 WO2012057481 A2 WO 2012057481A2
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WO
WIPO (PCT)
Prior art keywords
water
heating
backflow prevention
boiler
center
Prior art date
Application number
PCT/KR2011/007938
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English (en)
Korean (ko)
Other versions
WO2012057481A3 (fr
Inventor
박후봉
정문식
Original Assignee
Park Hoo Bong
Jung Moon Sik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020100104106A external-priority patent/KR101230543B1/ko
Priority claimed from KR1020110053673A external-priority patent/KR20120134625A/ko
Application filed by Park Hoo Bong, Jung Moon Sik filed Critical Park Hoo Bong
Publication of WO2012057481A2 publication Critical patent/WO2012057481A2/fr
Publication of WO2012057481A3 publication Critical patent/WO2012057481A3/fr

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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
    • F24D3/00—Hot-water central heating systems
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating

Definitions

  • the present invention relates to a non-powered simple heating boiler and a non-powered simple heating boiler backflow prevention device, more specifically, by heating the water supplied from the bucket to circulate the heating water by the pressure generated by the temperature rise to form a circulation
  • the simple structure that excludes mechanical elements such as pumps provides excellent economic efficiency according to manufacturing and production, and it is convenient to carry and use, as well as low noise, so it is excellent in use efficiency. It relates to a non-powered simple heating boiler that can be used for a long time without replenishment and a backflow prevention device for non-powered simple heating.
  • the boiler is heated by heating the water supplied from the water tank in the heating unit and circulated to the heating water by the circulation pump to achieve the heating.
  • Such a boiler is applied to the same concept in a heating mat installed on a portable mat or a floor of a building.
  • the conventional boiler is complicated by the structure of the device because a mechanical element such as a circulation pump is required to circulate the heating water, which is expensive to manufacture and production, the problem of inconvenient to carry and move, and a big noise, etc. There was this.
  • Korean Patent No. 10-518262 Korean Patent No. 10-518262, etc., which includes a water tank and a heating tank supplied with water from the water tank to heat the heating tank. The water heated in was made to circulate back to the water tank after passing through the heating hose of the heating section.
  • Such conventional non-powered heating boiler has a problem in that it is inconvenient to carry and move because the structure of the water tank and the heating tank are separately installed and configured to be large.
  • the heating water heated in the heating tank is supplied to the heating hose of the heating section.
  • the pressure generated by the temperature rise does not control the water supply of the water tank but merely a check valve.
  • the steam is generated by the temperature rise by the water heating of the heating tank to reduce the amount of water (heating water) circulated in the water tank, the heating tank and the heating section is required to discharge steam or replenishing water and the problem There was a problem with the risk of explosion due to water vapor.
  • the present invention has been invented to solve all the problems of the prior art as described above, the heating of the water supplied from the water tank circulates the heating water by the pressure generated by the temperature rises to achieve the heating mechanical elements such as circulation pump Its purpose is to provide excellent use efficiency due to its economical efficiency, ease of portability and mobile use, and low noise due to the simple structure that is excluded.
  • the present invention has excellent water heating or pressure generation efficiency of the heating tank because it controls the water supply of the water tank by the pressure generated by the temperature rise due to the water heating of the heating tank, thereby circulating the heating water and the heating efficiency is excellent
  • the purpose is to provide.
  • the present invention is intended to provide excellent convenience and safety because it can be used for a long time without additional water replenishment by reducing the water vapor generated by the temperature rise by heating the water of the heating tank to water without additional steam discharge. .
  • the present invention forms a step height lower than the other side height than the other side to form a water inlet and a water outlet in the upper and lower sides of the lower height, the air storage unit is stored in the air and the water due to the height difference in the upper and lower
  • a water tank for forming a water reservoir The lower body and the upper body which form a suction port as a center and are connected to the upper body and the upper body which are connected to the water outlet of the bucket, and form a flow path between the protrusions by protruding protrusions in the circumferential direction of the discharge port on the discharge port and the upper surface toward the center.
  • a backflow prevention device which is installed as a space between the lower body and the lower body, and comprises a disk-type backflow prevention plate that opens and closes the inlet of the upper body while moving up and down by internal pressure;
  • a heating unit configured to include a heating tank connected to the outlet of the lower body and a heater to generate pressure by increasing the temperature of the water supplied into the heating tank by heating the heater, and circulating and supplying the heating water to the heating section without power;
  • a recovery pipe connected to the heating section to recover heating water, a water return pipe connected to a water return port formed at the other lower water storage part of the bucket, and a water vapor outlet formed at the other upper air storage part of the bucket; It is characterized in that it consists of; a pipe portion for branching the steam discharge pipe.
  • the present invention forms a step height lower than the other side height than the other side to form a water inlet and a water outlet in the upper and lower sides of the lower height, the air storage unit is stored in the air and the water due to the height difference in the upper and lower
  • a water tank for forming a water reservoir Directly connected to the body through which the flow path is formed to communicate with the outlet of the bucket center, but the backflow prevention plate inserted into the upper space of the body in accordance with the pressure inside the body while inserting a backflow prevention plate for opening and closing the outlet of the bucket An apparatus;
  • a heating unit configured to include a heating tank connected to the outlet of the lower body and a heater to generate pressure by increasing the temperature of the water supplied into the heating tank by heating the heater, and circulating and supplying the heating water to the heating section without power;
  • the water return hole penetrated horizontally in the lower water storage unit at the rear of the water tank and the water vapor discharge hole vertically penetrated in the upper air reservoir at the upper portion of the water return hole are directly connected
  • the present invention is characterized in that the guide projection is formed to protrude to the inner bottom of the upper body of the backflow prevention device to be guided up and down by the guide projection at the time of lifting the backflow prevention plate to be located at the center of the inlet port center of the upper body center.
  • the present invention forms a guide portion through which a guide hole penetrates on one side of the backflow prevention plate, and protrudes to form a guide protrusion in which the guide hole is guided to the upper surface of the upper body of the backflow prevention device so that the backflow prevention plate is moved up and down. It is characterized in that it is constantly guided up and down to be located in the center of the suction port of the upper body center.
  • Expansion pressure inside the backflow prevention device by opening and closing operation by vertically screwing the control pin vertically screwed to the center of the body portion connected to each of the air storage unit of the backflow prevention device and the bucket by the hose It is characterized in that it further comprises a water circulation to cancel the.
  • the present invention is characterized by further installing a safety valve for discharging water vapor to the outside when the air storage portion of one side of the bucket increases above the appropriate pressure.
  • the present invention is configured to circulate the heating water heated in the water tank, the backflow prevention device, the heating unit and the heating unit in the heating section, and then recovered to the water tank through the piping unit, which is generated by the temperature rise by heating the water in the heating unit
  • the heating water is circulated by pressure to achieve heating, and the simple structure that excludes mechanical elements such as circulating pumps makes it economical and excellent in terms of manufacturing and production. Since the water supply of the bucket is controlled by the pressure generated by the temperature rise due to the water heating of the heating tank, the water heating or pressure generation efficiency of the heating tank is excellent, and thus the circulation and heating efficiency of the heating water is excellent. Of course, the water vapor generated during water heating is reduced to water, so it is safe and can be used for a long time without additional water supply. As it has the advantage that it provides excellent convenience and safety in use.
  • FIG. 1 is a perspective view showing an embodiment of the present invention non-powered simple heating boiler.
  • FIG. 2 is a side view of FIG. 1;
  • Figure 3 is an exploded perspective view of the backflow prevention device of Figure 1;
  • Figure 4 is a perspective view showing a case in which the present invention is a non-powered simple heating boiler.
  • Figure 5 is a side view showing another embodiment of the present invention non-powered simple heating boiler.
  • Figure 6 is a side cross-sectional view showing the water circulation operating state of FIG.
  • Figure 7 is a side cross-sectional view showing another embodiment of the present invention non-powered simple heating boiler.
  • FIG. 8 is an exploded perspective view of the backflow prevention device of FIG.
  • Figure 9 is a perspective view showing another embodiment of the present invention non-powered simple heating boiler.
  • FIG. 10 is a perspective view showing another embodiment of the present invention backflow prevention device.
  • FIG. 11 is a bottom perspective view of the upper body of FIG. 10; FIG.
  • Figure 12 is a perspective view showing another embodiment of the present backflow prevention device.
  • FIG. 13 is a bottom perspective view of the upper body of FIG. 12; FIG.
  • FIG. 14 is a plan view showing the non-return plate of FIG.
  • the non-powered simple heating boiler of FIGS. 1 to 3 includes a bucket 100, a backflow prevention device 150, a heating part 160, and a piping part 130.
  • the bucket 100 may be formed in a variety of shapes, such as a stepped cube, a cube, a cylinder, a polygonal column, and the like.
  • the bucket 100 is formed in the upper stepped shape, that is, the height of one side of the bucket 100 is lower than the other height and the water inlet 106 and the water outlet 112 in the upper and lower sides of the lower height of the bucket To form and the water inlet is configured to open and close with a water bottle cap 120.
  • the inside of the bucket 100 is divided into an air storage unit 104 for storing air in the other upper portion of the high height of the bucket and a water storage unit 102 for storing water under the air storage unit.
  • the backflow preventing device 150 is connected to the water outlet 112
  • the heating unit 160 is connected to the backflow preventing device.
  • the backflow prevention device 150 has a suction port 312 formed through the upper body 310 is connected to the water outlet of the water tank and the upper body 310 is coupled to the upper body 310 and the discharge port 322 is formed through the center
  • the lower body 320 and the upper body 310 and the lower body 320 is inserted into the space to move up and down to move the internal pressure generated by the water heating of the heating portion while opening and closing the inlet port 312 of the upper body to control the water supply
  • the upper surface of the lower body 320 protrudes at least one protrusion 326 in the circumferential direction of the discharge port, so that the suction port 312 of the upper body is opened during the downward movement of the backflow prevention plate 300 so that water is the suction port 312.
  • the upper body 310 and the lower body 320 are screwed together by the male screw portion 314 and the female screw portion 324 as shown in the drawing or coupled to each other by forming a flange to the opposite position to be mutually coupled by bolting
  • the protrusion 326 of the upper surface of the lower body 320 may be formed in various shapes such as a cylinder or a polygonal pillar.
  • the heating unit 160 is composed of a heating tank 164 and a heater 162 electrically connected to the power supply unit 170 on the heating tank 164, the inlet side of the heating tank 164
  • the outlet 322 and the outlet side of the backflow prevention device 150 are connected to the heating section (not shown) by the water inlet 166 to circulate the heating water to the heating section by the pressure generated by the temperature rise by the water heating of the heating section. Configured to supply.
  • the heating section (not shown) is configured to circulate the heating water connected to the pipe section 130 and circulated in the heating section to the water tank 100 through the pipe section 130.
  • the pipe 130 is a water return pipe connected to the water recovery port 110 formed in the recovery pipe 136 connected to the heating section and the other lower water storage portion 102 of the bucket 100 to the recovery pipe.
  • the water vapor discharge pipe 134 connected to the water vapor discharge port 108 formed at the other upper air storage unit 104 of the water tank 100 is formed in a structure for branching.
  • the water tank 100 has a low water level blocking sensor 180 that stops the water at a certain level (L) below the safety valve 190, water storage 102 in the position of the other upper air storage 104, respectively.
  • the installation is configured.
  • the heating section connected to the boiler of the present invention may be a heating section embedded in a portable mat, although not shown in detail in the drawings, and may also be a heating section installed in a stone bed or a room floor, a living room floor, or a building floor.
  • a heating section installed in a stone bed or a room floor, a living room floor, or a building floor.
  • the air is filled in the air storage unit 104 of the other side higher than the water inlet in the water tank 100, and the water is filled in the water storage unit 102 under the air storage unit.
  • the water filled in the bucket 100 is supplied to the backflow prevention device 150 through the water outlet 112 in the lower portion.
  • the water of the bucket 100 is supplied through the suction port 312 penetrated to the center of the upper body 310 of the backflow prevention device 150 between the projections 326 protruding in the circumferential direction of the upper surface of the lower body 320 It is supplied to the heating unit 160 through the flow path and the outlet 322 of the lower body.
  • the backflow prevention plate 300 between the upper body 310 and the lower body 320 is moved downward to be seated on the protrusion 326 of the upper surface of the lower body.
  • a pressure is generated inside the heating tank 164 due to a rise in the temperature of the water heated in the heating tank 164, thereby causing a backflow between the upper body 310 and the lower body 320 of the backflow prevention device 150.
  • the prevention plate 300 moves upward to block the inlet 312 at the center of the upper body, the water supply is automatically stopped while preventing the water inside the heating tank 164 from flowing back toward the water tank 100 through the backflow prevention device.
  • the backflow preventing plate 300 which blocks the inlet 312 at the center of the upper body of the backflow preventing device 150 again.
  • the lower return and the water inside the bucket 100 is supplied back to the heating tank 164 of the heating unit 160 through the backflow prevention device 150 to repeat the above-described heating process to continuously supply the heating water circulating Will be.
  • the heating water heated by natural circulation type continuously and smoothly circulates to the heating section (not shown) to provide excellent heating efficiency.
  • the heating water circulated and supplied to the heating section (not shown) is heated again to the recovery pipe 136 of the piping 130 to return the water return pipe 132 and the water return port 110 of the water tank.
  • the water storage unit 102 is to be recovered through the bucket (100).
  • the non-powered simple heating boiler of the present invention is used in a separate case 510 as shown in FIG. 4, but uses two pieces of the heating boiler of the same configuration as in FIG. 1 or uses one piece. It can be used alone.
  • case 510 is used to open and close the external inlet 540 connected to the water inlet 106 of the water bottle with an external cap 530, and to open and use a separate cover 520 on the top.
  • the non-powered simple heating boiler of the present invention can be carried out differently as shown in Figures 5 and 6, which is the lower body of the backflow prevention device 150 compared to the embodiment of Figures 1 to 3 described above
  • the control pin 415 is vertically screwed to the center of the body 410 connected to the air storage unit 104 of the water tank and the water reservoir 100 by the hoses 421 and 422, respectively.
  • the air remaining inside the backflow prevention device 150 during the initial operation of the boiler acts as an expansion pressure due to the heating of the heating tank 164 to reverse the inlet port 312 at the center of the upper body 310 of the backflow prevention device.
  • the blocking of the prevention plate 300 to block the supply of water often occurs, at this time, by raising and opening the control pin 415 screwed to the body portion 410 of the water circulation unit 400 to prevent backflow
  • the lower body 320 of the device 150 and the hoses 421 and 422 connected to the air storage 104 of the water tank 100 are mutually opened to offset the inflation pressure of the backflow prevention device.
  • By lowering the non-return plate 300 blocking the inlet 312 of the center of the upper body to provide a water supply of the bucket (100).
  • the non-powered simple heating boiler of the present invention can be carried out differently as shown in Figs. 7 and 8, which is compared with the above-described embodiment of Figs.
  • the water tank 100 has a water discharge hole 133 horizontally penetrated by the lower water storage unit 102 and a water vapor discharge hole 135 vertically penetrated by the upper air storage unit 104 above the water return hole. Formed directly connected to, it is configured to connect the recovery pipe 136 'connected to the heating section to the water return hole 133.
  • the water return hole 133 and the water vapor discharge hole 135 is formed by forming integrally in the bucket (100).
  • the heating water is circulated and supplied to a heating section (not shown) to perform heating, and then the heating water is recovered to the recovery pipe 136 ′ of the piping 130 to store the water through the water return hole 133 of the bucket. 102).
  • the water vapor generated by the internal temperature rise of the bucket 100 is raised to the air storage unit 104 of the upper portion of the bucket is liquefied by contact with the water flowing in the water return hole 133 through the water vapor discharge hole 135 As it returns to the water storage unit 102 and reduces the air pressure inside the water tank, safety is secured, and the amount of water (heated water) circulated is not reduced, so that it can be used for a long time without additional water replenishment.
  • the backflow prevention device 150 is installed directly connected to communicate with the outlet 112 of the bucket body 330 is formed through the passage 331 as a center, the body 330 in the upper space in the body While opening and lowering according to the pressure of the opening and closing the outlet of the bucket to install the backflow prevention plate 300 to control the water supply.
  • the body 330 of the backflow prevention device is formed as a single body, and there is a difference in directly connecting to the outlet of the water tank, and the backflow prevention plate 300 is raised and lowered according to the internal pressure, and thus the outlet 112 of the water tank is lifted. It is provided in the same manner as the operation and effect of the embodiment of Figures 1 to 3 by opening and closing to control the water supply.
  • the backflow prevention plate 300 is adsorbed on the bottom surface of the outlet 112 of the water tank so as to prevent the lifting and lowering operation is protruding to form a protrusion on the outer periphery of the lower outlet or the leaf spring on the top of the backflow prevention plate as shown in the drawing It is also possible to install and use 305 additionally.
  • non-powered simple heating boiler of the present invention to form a water outlet 112 of the bucket to the lower side of the bucket, as shown in Figure 9 to the backflow preventing device 150 and the heating unit 160 of the bucket 100
  • the operation and the effect thereof are the same as in the above-described embodiment of FIGS. 1 to 3, and thus the detailed description thereof will be omitted.
  • the upper body 310 and the lower body 320 of the backflow prevention device 150 are connected to each other by fastening with flanges to face each other with flanges.
  • the lower body 320 is to be used to offset the internal expansion pressure by forming an air discharge pipe 401 that is opened and closed by the lever 402.
  • non-return device 150 of the present invention is not limited to the non-powered simple heating boiler described above can be applied to various types of heating boiler, of course, can be modified in various forms in addition to the above-described form .
  • the non-return device 150 may be implemented differently as shown in FIGS. 10 and 11, which is compared with the above-described embodiment of FIG. 3, to provide a rubber packing between the upper body 310 and the lower body 320. 350 is installed and hermetically coupled, and the guide protrusion 3150 is formed to protrude to the inner bottom of the upper body by the inner periphery so that the backflow prevention plate 300 is guided ascending and descending by the guide protrusion at the time of lifting and lowering. 312) to ensure a tight shut-off operation in the center position.
  • the non-return device 150 of the present invention may be implemented differently as shown in FIGS. 12 to 14, which is one side of the non-return plate 300 in comparison with the embodiment of FIG. 3 described above.
  • the backflow prevention plate 300 is constantly raised and lowered by the guide protrusion when the lowering and lowering is provided so as to ensure a closed blocking operation at the center of the inlet 312 of the upper body.
  • one side of the backflow prevention plate 300 is fixed to the bottom surface of the upper body 310 of the backflow prevention device by using screws or rivets, so that the upper and lower positions of the fixed position by the screws or rivets rotate to the point.
  • screws or rivets can also be configured to open and close the suction port.
  • the non-return plate 300 may be made of a material such as metal or non-ferrous metal, synthetic resin that can withstand high temperature, but is preferably formed of a stainless steel material with a thickness of 0.2mm ⁇ 0.4mm, the shape In addition, it can be formed in various forms such as triangles, squares, polygons.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Cookers (AREA)

Abstract

La présente invention concerne une chaudière de production d'eau chaude de petit volume non motorisée et un disconnecteur hydraulique pour la chaudière de production d'eau chaude de petit volume non motorisée. La chaudière de production d'eau chaude de petit volume non motorisée comprend un réservoir d'eau, un disconnecteur hydraulique, une unité de chauffage, et une conduite à travers laquelle l'eau chauffée par l'unité de chauffage et circulant à travers une zone à chauffer retourne au réservoir d'eau. L'eau est chauffée par l'unité de chauffage et amenée à circuler par la pression produite par l'élévation de température de l'eau de manière à effectuer une opération de chauffage, ce qui permet de simplifier la structure par élimination de la nécessité d'éléments mécaniques tels qu'une pompe de circulation ou similaire, et d'obtenir des avantages économiques lors de la fabrication de la chaudière. La chaudière de la présente invention améliore la portabilité et la mobilité et facilite l'utilisation, et produit moins de bruit pour obtenir une efficacité d'utilisation supérieure. La chaudière de la présente invention présente une efficacité supérieure pour le chauffage de l'eau ou la production de pression dans un réservoir de chauffage, ce qui permet d'améliorer la circulation d'eau et l'efficacité du chauffage. La chaudière de la présente invention condense la vapeur produite pendant le chauffage de l'eau à nouveau en eau, ce qui permet d'utiliser la chaudière d'une manière sûre pendant une longue période de temps sans ajouter d'eau, ce qui permet d'assurer une utilisation pratique et sûre.
PCT/KR2011/007938 2010-10-25 2011-10-24 Chaudière de production d'eau chaude de petit volume non motorisée, et disconnecteur hydraulique pour la chaudière de production d'eau chaude de petit volume non motorisée WO2012057481A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020100104106A KR101230543B1 (ko) 2010-10-25 2010-10-25 역류방지장치 및 이를 구비한 무동력 간이 난방용 보일러
KR10-2010-0104106 2010-10-25
KR10-2011-0053673 2011-06-03
KR1020110053673A KR20120134625A (ko) 2011-06-03 2011-06-03 역류방지장치 및 이를 이용한 무동력 간이 난방용 보일러

Publications (2)

Publication Number Publication Date
WO2012057481A2 true WO2012057481A2 (fr) 2012-05-03
WO2012057481A3 WO2012057481A3 (fr) 2012-07-26

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PCT/KR2011/007938 WO2012057481A2 (fr) 2010-10-25 2011-10-24 Chaudière de production d'eau chaude de petit volume non motorisée, et disconnecteur hydraulique pour la chaudière de production d'eau chaude de petit volume non motorisée

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113883718A (zh) * 2021-10-15 2022-01-04 中船九江锅炉有限公司 一种双腔体船用锅炉

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0177697B1 (ko) * 1994-11-28 1999-04-15 이헌조 급수밸브의 역류방지장치
KR100446793B1 (ko) * 2002-02-19 2004-09-07 주식회사 위닉스 온수 역류방지장치
KR20090083766A (ko) * 2008-01-30 2009-08-04 이명수 역 지변 구조를 갖는 온수매트용 온수공급장치
KR20100044719A (ko) * 2008-10-22 2010-04-30 웨이하이 크어비쓰무예 요우시안꽁쓰 난방용 자연순환식 보일러
KR20100097254A (ko) * 2009-02-26 2010-09-03 이명수 온수매트용 온수순환장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0177697B1 (ko) * 1994-11-28 1999-04-15 이헌조 급수밸브의 역류방지장치
KR100446793B1 (ko) * 2002-02-19 2004-09-07 주식회사 위닉스 온수 역류방지장치
KR20090083766A (ko) * 2008-01-30 2009-08-04 이명수 역 지변 구조를 갖는 온수매트용 온수공급장치
KR20100044719A (ko) * 2008-10-22 2010-04-30 웨이하이 크어비쓰무예 요우시안꽁쓰 난방용 자연순환식 보일러
KR20100097254A (ko) * 2009-02-26 2010-09-03 이명수 온수매트용 온수순환장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113883718A (zh) * 2021-10-15 2022-01-04 中船九江锅炉有限公司 一种双腔体船用锅炉
CN113883718B (zh) * 2021-10-15 2023-03-21 中船九江锅炉有限公司 一种双腔体船用锅炉

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