WO2009122926A1 - 電気温水循環暖房システム - Google Patents

電気温水循環暖房システム Download PDF

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Publication number
WO2009122926A1
WO2009122926A1 PCT/JP2009/055425 JP2009055425W WO2009122926A1 WO 2009122926 A1 WO2009122926 A1 WO 2009122926A1 JP 2009055425 W JP2009055425 W JP 2009055425W WO 2009122926 A1 WO2009122926 A1 WO 2009122926A1
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WIPO (PCT)
Prior art keywords
connection port
hot water
water
pipe
heater unit
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2009/055425
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English (en)
French (fr)
Japanese (ja)
Inventor
櫻庭高光
井浦奉昭
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Tokai Information System Consultation
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Tokai Information System Consultation
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Filing date
Publication date
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Priority to KR1020107024670A priority Critical patent/KR101230782B1/ko
Priority to CN2009801096668A priority patent/CN101978219B/zh
Publication of WO2009122926A1 publication Critical patent/WO2009122926A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F24D13/00—Electric heating systems
    • F24D13/04—Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
    • 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
    • F24D19/08—Arrangements for drainage, venting or aerating
    • F24D19/082—Arrangements for drainage, venting or aerating for water heating systems
    • F24D19/083—Venting 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
    • 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
    • F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
    • 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
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/08—Electric heater
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to an electric hot water circulation heating system used for indoor heating.
  • FIG. 7 is a typical hot water heating system listed in Non-Patent Document 1, wherein FIG. 7 (A) is a schematic layout diagram of the heating system, and FIG. 7 (B) is a front view of a radiator. FIG. 7C is a side view of the radiator.
  • the boiler 100 provided with the pressure gauge 103, the safety relief valve 106, the water supply port 101, and the drain port 102 is heated with electricity, kerosene, gas, etc., and warm water heated by the hot water boiler.
  • One hot water circulation function unit contains a circulation pump 104, a sealed expansion tank 105, an air vent valve 106, headers 107 and 108, etc., and each radiator HR also includes an air vent valve Va, a thermo stud valve Vt, A hot water inlet / outlet valve V is arranged.
  • the water filling and air venting in the system of Conventional Example 1 is a method in which the heating pipe is preliminarily raised from the hot water boiler with a 1/100 gradient, and the air is vented at the end of the pipe.
  • the water supply valve V is opened, the circulation pump 104 is operated, and the piping for each system branched by the header and each radiator are implemented, and each radiator is a water stop disposed on the lower side.
  • Connect the water pump with a water tank to one side of the valve connect the return hose to the other water stop valve, operate the water pump, circulate the water in the radiator several times, and dissipate heat. Water is filled in the radiator by letting out air from the air vent attached to the radiator.
  • FIG. 8 is an electric water heater EHR cited as Patent Document 1, and as shown in FIG. 8, a large number of radiating fins 202 are provided on the outer peripheral surface of a linear heating copper tube 201.
  • the sheathed heater 204 is disposed in the heating chamber 203 in the heating copper tube over almost the entire length of the heating copper tube, and the heating chamber 203 is filled with the aqueous solution 205 and further expanded from the heating chamber 203.
  • the room copper pipe 206 is extended through the bent pipe part 207, an expansion chamber 208 having a pressure safety valve 209 is arranged at the tip, an inert gas is injected into the expansion chamber 208, and the whole heater is downsized.
  • the hot water circulation heating system of Conventional Example 1 includes a hot water boiler 100 provided with a safety relief valve, a pressure gauge, a drainage gate valve and a water supply gate valve, a sealed expansion tank 105 provided with a safety relief valve, Forward and return headers 107 and 108, a hot water circulation pump 104, an air separator 110 provided with an air vent valve installed between the boiler and the circulation pump, a radiator HR group provided with a partition valve for water supply and drainage, Since it is composed of a piping pipe P to which equipment and valves are connected, and connected from the boiler room provided in the building to the indoor radiator by piping under the floor, in the wall, and in the ceiling, there are the following problems.
  • the ratio of the heat radiating portion is smaller than the entire volume of the heater, and the warm water does not circulate only by heating the aqueous solution in the sheathed heater 204. There are small spots and the heat dissipation is small. And since heating heat radiation is a natural convection, the temperature spot by a part of heat radiation tends to arise. In addition, the power on / off operation by the thermostat 211 becomes remarkable, and the heat generation effect on the amount of electric heat is poor.
  • the invention of the present application solves or improves the problems inherent in the conventional examples 1 and 2 at a stroke, and in a single type heater, separates the heat dissipating part and the hot water circulating part and uses them as a pair.
  • the present invention provides a new electric hot water circulation heating system that is easy to maintain and can be suitably used for renovation.
  • the present invention is an electric heating type hot water circulation type heating system in which one radiator 8 is arranged corresponding to one square tube heater unit box 1,
  • the radiator 8 is a warm water circulation type radiator having a warm water supply port 8S and a warm water discharge port 8R.
  • the heater unit box 1 includes an air separation pressure tank 2, a circulation pump 3, a pipe heater 4, a ball valve 6A, 6B, 6C, cheese 7 and 7A are connected to the pipe to store the hot water circulation function, and the pressure auxiliary tank 2 'is stored at the tip of the branch pipe P6' drawn from the pipe P6.
  • the forward pipe S and the return pipe R is connected to the radiator 8.
  • the new air separation pressure tank 2 functions as the expansion tank 105 and the air separator 110 in the conventional example 1 (FIG. 7). What is necessary is just to determine based on the quantity at normal temperature, the quantity at the time of heating, and the amount of separation air.
  • the auxiliary tank 2 'reinforces the function of the air separation pressure tank 2 as a pressure tank, and may be any pressure vessel that can be incorporated into the compact heater unit box 1. Adopting the same and same shape is advantageous from the viewpoint of forming the heater unit box and cost.
  • auxiliary tank 2 ' since auxiliary tank 2 'was employ
  • the circulation pump 3, the pipe heater 4, the ball valves 6A, 6B, 6C, and the cheese 7, 7A constituting the heater unit box 1 can be prepared with conventional products, and the circulation pump 3 can be a metal with a conventional resin electromagnetic pump.
  • a circulating pump may be used, and the pipe heater 4 employs a plurality of 1 kw exothermic SC heaters (trade names) manufactured by Thermal Engineering Co., Ltd., which are excellent in energy saving, according to the heating capacity.
  • a conventional ethylene-propylene rubber product having excellent durability, heat resistance and solvent resistance may be employed.
  • the heater unit box 1 is packed with the hot water circulation function of the conventional example 1 (FIG. 7) as a package, but even if it is arranged vertically on the side of the radiator 8, it is arranged horizontally below the radiator 8.
  • the heater unit box 1 typically has a width L1 of 180 mm, in a 1 kw to 3 kw heating system. It is a small box with a square tube shape with a depth W1 of 160 mm and a height h1 of 590 mm.
  • Any radiator 8 can be used as long as it is a hot water circulation type, such as a metal panel (trade name: Thermopanel) manufactured by Morinaga Engineering Co., Ltd., or a plastic radiator disclosed in Japanese Patent Application Laid-Open No. 2001-116475. Can be adopted.
  • a metal panel trade name: Thermopanel
  • a plastic radiator disclosed in Japanese Patent Application Laid-Open No. 2001-116475. Can be adopted.
  • one heater unit box 1 is arranged corresponding to one radiator 8, so that even if one heater unit box 1 fails, another radiator 8 Functioning, the malfunction of the heating system in all the rooms can be avoided, and the heating of the living area can be avoided.
  • the pressure in the air separation pressure tank 2 is supplemented by the auxiliary tank 2 ′, even when the internal pressure of the system rises, danger arises due to the cooperative action of the air separation pressure tank 2 and the auxiliary tank 2 ′. Provides no safe heating system.
  • the heating unit box 1 incorporating the heating unit can be disposed adjacent to the radiator 8
  • the heating unit (boiler) of the conventional example 1 (FIG. 7) is connected to the radiator.
  • the radiator 8 is a hot water circulation type, it can be heated without causing heat radiation temperature fluctuations, and each radiator 8 itself is also a heat radiation by independent operation in each heater unit box, so that heat loss is reduced. It does not occur and can be heated as needed. And since the thermostat valve Vt, the air vent valve Va, and the gate valve V do not protrude from the radiator 8 as in the conventional example 1 (FIG. 7), a safe indoor heating system with an excellent design effect is provided.
  • the arrangement of the heating system to the required part is simple and flexible. For example, even if water leaks from the radiator 8 or the heater unit box 1, it can be visually observed. Therefore, it does not become a big pollution accident.
  • the old piping such as under the floor and inside the wall is left untouched, and the heater unit box 1 is simply placed in the existing circulation heat radiator. It can be easily updated to a heating system.
  • a cheese 7A having a ball valve 6C, a ball valve 6B, and a cheese 7 having a ball valve 6A are provided in the piping path of the heater unit box 1. While arranging in series, it is preferable to extend branch pipe P6 'from cheese 7A, and to connect auxiliary tank 2' to the upper end of branch pipe P6 '.
  • the branch pipe P6 ′ employs a rubber pipe 5A like the pipe of the piping path, the extension end is bent upward, the base end is cheese 7A, and the bent tip is a connection port J1 on the lower surface of the auxiliary tank 2 ′.
  • the hose band 5B may be fastened.
  • the forward pipe S and the return pipe R of the heater unit box 1 are connected to the radiator 8, and the ball valve 6A of the cheese 7 is connected to the water faucet (a ) And a pressure hose (c), and the tip of the transparent hose (d) connected to the ball valve 6C of the cheese 7A is placed in the water of the bucket (b) and at the middle from the ball valve 6C to the bucket (b).
  • the lift (e) to the transparent hose (d)
  • the ball valve 6B is closed and the ball valves 6A and 6C are opened, and the water flow w due to the water pressure of the tap water is filled into the system path from the tap (a).
  • the ball valve 6A and the faucet (a) are closed at the stage when air bubbles are released into the bucket (b), and the water pressure in the system is adjusted to the tap water pressure.
  • the water pressure in the system is only the lift pressure of the lift (e) (standard: 1 m), the ball valve 6B is opened, and the ball valve 6C is closed, so that the filling water in the system is predetermined.
  • the pressure can be.
  • the tap water when the tap water is injected into the system, the rising water also enters the auxiliary tank 2 'due to the tap pressure, but the ball valve 6A is closed and the pressure in the system is raised by the head (e).
  • the head pressure standard: 0.01 MPa
  • the air separation pressure tank 2 has a predetermined water level surface as shown in FIG. under the wL 1, air zone Za for pressure absorption, the auxiliary tank 2 ', as in FIG. 3 (B), under a predetermined water level surface wL, the air space Za can be secured for the pressure absorption.
  • the heater unit box 1 has a long rectangular tube portion in which a long left side plate 1L and a right side plate 1R are joined, as shown in FIGS. 4 and 5, for example. 1K, and an upper lid 1U and a lower lid 1D that are detachably fitted to both ends of the rectangular tube portion 1K. It is preferable that a plurality of wire insertion holes H1 are provided, and the other side LS2 is provided with a plurality of air circulation holes H3 at positions corresponding to the wire insertion holes H1.
  • the left side plate 1L attaches a support material such as a device to the inner surface
  • the right side plate 1R plays the role of a lid of the rectangular tube portion 1K.
  • the wire insertion hole H1 enables the electrical piping box 9A embedded in the wall surface WS or the floor surface FS in advance to be connected to the temperature adjustment unit housed in the heater unit box at an appropriate position. It is a size that can be manually inserted, and is typically an oval hole with a width of 60 mm and a height of 40 mm, and is arranged at five locations at intervals of 100 mm.
  • the air circulation hole H3 dissipates the heat in the heater unit box 1 to the outside, and forms an air through channel in the heater unit box 1, and typically has a width of 20 mm and a height. It is a 40 mm oval hole.
  • the operation panel 9B is disposed on the upper lid 1U.
  • the operation panel 9B is provided on the right side plate 1R that performs the lid function of the rectangular tube portion 1K. Should be arranged.
  • the rectangular tube portion 1K can be disassembled into the left side plate 1L and the right side plate 1R having an L-shaped cross section, and the storage device can be fixed only to the left side plate 1L.
  • the heater unit box can be easily maintained by removing the right side plate 1R as the lid member.
  • the arrangement of the heater unit box 1 in each room is also arranged in multiple stages in the electric wire insertion hole H1, so that the connection position with the external electric piping box 9A can be selected, and the appearance is not impaired. Can be arranged.
  • the heat dissipated in the heater unit box 1 helps the room heating. And an indoor heating system in which heat loss does not substantially occur.
  • the heater unit box 1 has a left-side plate 1L having an L-shaped cross section that bends and extends a corner side 1A at both ends, and an end portion of the corner side 1A is an L-shaped anchor piece 1C.
  • the anchor piece 1C of the left side plate 1L and the contact anchor piece 1F for contact are arranged at both ends of the right side plate 1R having the L-shaped cross section, and the upper and lower ends of the left side plate 1L and the right side plate 1R having the L-shaped cross section are suitable.
  • the screw hole H2 is disposed in the screw holes H2 of the upper lid 1U and the lower lid 1D and the screw holes H2 of the left side plate 1L and the right side plate 1R are screwed together.
  • the left side plate 1L and the right side plate 1R are typically 1.2 mm thick steel plates, and the inner surface of the left side plate 1L is itself separated from a ball valve, cheese, and air via a conventional support member.
  • a conventional support member In order to attach each necessary equipment such as a pressure tank, it is preferable to arrange reinforcing rib projections 1G on the sides LS1 and LS2 and the corner side 1A of the left side plate 1L as shown in FIG.
  • the heater unit box 1 can be easily assembled and separated by fitting and screwing the upper lid 1U and lower lid 1D with the left side plate 1L and the right side plate 1R, and the storage devices are attached only to the left side plate 1L. Therefore, maintenance such as inspection, repair and replacement is easy.
  • the presence of the anchor piece 1C and the abutment anchor piece 1F improves the workability of attaching the right side plate 1R to be removed during maintenance to the left side plate 1L, and the anchor piece 1C and the abutment anchor piece 1F are used to reinforce the box 1. It also plays a rib function.
  • the air separation pressure tank 2 and the auxiliary tank 2 ′ disposed in the heater unit box 1 are the same, and as shown in FIG. 6, the lower side 2D, the front side 2F, the rear side 2B, the upper side 2T, and the both sides 2L, 2R, and the upper side 2T is a box shape that is continuous with the front side 2F at the front side inclined side Sf and the rear side 2B at the rear side inclined side Sb, and has a connection port J1 at the upper and lower central portions of the front side 2F.
  • the rear edge 2B is provided with a connection port J2 at the upper and lower central portion, and the rear portion of the upper side 2T is provided with a connection port J3, and the two blades 2A, 2A are inclined and raised rearward across the two sides 2L, 2R.
  • the front blade 2A is disposed at the rear corresponding position of the front side connection port J1, and the rear blade 2A 'is disposed at the lower corresponding position of the upper side connection port J3.
  • the capacity of the air separation pressure tank 2 depends on the amount of water sealed in the circulating heating system at normal temperature (standard: 15 ° C.) and hot water (standard: 80 ° C.), and at the time of expansion.
  • the positions of the connection ports J1, J2, and J3 are such that the connection port J1 and the connection port J2 are below the water level even when the heater unit box 1 is used laterally even at room temperature.
  • the connection port J3 and the connection port J2 may be determined to be below the water level.
  • both the lower blade 2A and the upper blade 2A ′ cause a control turbulent flow for promoting air separation. If the inclination angle is 30 °, the tank can be used vertically or horizontally. The function of generating a controlled turbulent flow that suppresses a naturally generated vortex and promotes air separation by a diversion action is generated.
  • the air separation pressure tank 2 is made of plastic resin and is about 3 times stronger than the explosion occurrence strength at high pressure in the circulation system under the proposition that an air vent valve and a safety relief valve are unnecessary.
  • the safety factor is typically made of a plastic resin with a thickness of 0.6 mm.
  • the radiator 1 kw in the vertical usage mode, the water volume is 0.19 L (liter) at room temperature and the system internal pressure is 0.01 MPa. At 80 ° C., the amount of water is 0.26 L, and the pressure in the system is 0.04 Mpa. In horizontal use, the water amount is 0.28 L, the pressure in the system is 0.01 Mpa, the water amount is 0.34 L, and the pressure in the system is 0 at 80 ° C. .04Mpa. If the air separation pressure tank 2 is made of translucent plastic, it can be seen from the outside, and the water entering the tank can be visually observed when filling the circulation heating system. Convenient for maintenance.
  • the two slats 2A and 2A ' are used as a control turbulent flow effective for air separation when the two blades 2A and 2A' are used in the vertical and horizontal directions.
  • the air bubbles in the water are preferably separated and raised, and the generated air in the circulation system is secured in the air separation pressure tank 2 safely.
  • An air separation pressure tank that does not require the arrangement of a conventional safety relief valve and an air vent valve is provided, and one heater of the entire circulation system excluding the radiator of the conventional example 1 (FIG. 7) Storage in the unit box 1, general use of the heater unit box 1 in vertical or horizontal use, and miniaturization of the heater unit box 1 are possible.
  • the heater unit box 1 can be manufactured under reduced size and cost, the heater unit box 1 can be used as an auxiliary tank 2 '.
  • the front side 2F of the air separation pressure tank 2 is on the upper side and the rear side 2B is on the lower side.
  • the pipe heater 4 is connected to the connection port J3 on the upper side 2T
  • the forward pipe S is connected to the connection port J2 on the rear side 2B
  • the connection port J1 on the front side 2F is closed with the cap 2C.
  • the path connection between the connection port J3 and the pipe heater 4 and between the connection port J2 and the forward pipe S may be made with an ethylene-propylene rubber (EPDM) pipe.
  • EPDM ethylene-propylene rubber
  • the circulating water becomes the water level surface of wL 1 at normal temperature and the water level surface of wL 2 at 80 ° C., and the inflow water from the connection port J3.
  • Fin becomes the outflow water Fout from the connection port J2, and the flow velocity rapidly decreases in the tank 2, and the upper flow F1, the lower flow F2, and the upper blade of the lower blade 2A in the tank 2 2A becomes an upward flow F3 and a downward flow F4, and the air bubbles in the water separate and rise to the air zone Za at the upper part of the tank closed by the cap 2C.
  • Hot water not included can be circulated.
  • the heater unit box 1 can be downsized.
  • the upper side 2T of the air separation pressure tank 2 is arranged on the upper side and the lower side 2D is arranged on the lower side, and a pipe is connected to the connection port J1 on the front side 2F.
  • the heater 4 is connected, the forward pipe S is connected to the connection port J2 on the rear side 2B, and the upper side connection port J3 is closed with the cap 2C.
  • the connection port J1 and the pipe heater 4 and the connection port J2 and the forward pipe S may be connected by an ethylene-propylene rubber pipe.
  • the connection port J3 of the upper side 2T is airtightly sealed with the cap 2C, the lower area of the connection port J3 of the tank 2 becomes the air region Za.
  • the air separation pressure tank 2 becomes the water level surface of wL 1 when the circulating water is at room temperature (15 ° C.) and the water level surface of wL 2 at 80 ° C.
  • Circulating inflow water Fin flows into the tank 2 from the connection port J1, and the inflow water whose flow velocity is reduced is divided into the upper flow F1 and the lower flow F2 by the front blade 2A, and the air bubbles in the flowing water are separated.
  • the rear slat 2A is divided into the upper flow F3 and the lower flow F4, and the air bubbles generated from the flowing water are separated and raised to the air zone Za at the upper part of the tank, and become the circulating effluent Fout. It is supplied to the forward pipe S from the side connection port J2.
  • connection port J3 on the upper side 2T is closed with a cap 2C, and in the air zone Za in the upper part of the tank 2, the maximum heating and expansion pressure of the circulating water is set below the explosion critical value (standard: 1/3 explosion pressure value). Therefore, even if the air separation pressure tank 2 is used in a horizontal arrangement as shown in FIG. 6 (C), the function of the hermetic expansion tank and air separator of the conventional example 1 (FIG. 7) is exhibited.
  • the box 1 can be downsized.
  • the auxiliary tank 2 when the rectangular tubular heater unit box 1 is used in a vertical arrangement, the auxiliary tank 2 'has the front side 2F on the lower side and the rear side. 2B is arranged on the upper side, the connection port J3 on the upper side 2T and the connection port J2 on the rear side 2B are closed with a cap 2C, and the connection port J1 on the front side 2F is connected to the ball cheese 6C from the cross cheese 7A for water filling and air venting. It is preferable to connect to the upper end of the branch pipe P6 'extending through.
  • the extending branch pipe P6 ′ connected to the ball valve 6C may extend from any position within the pipe P6 between the air separation pressure tank 2 and the ball valve 6C, and the auxiliary tank 2 ′ If it is above the extending branch pipe P6 ′, water flowing above the water level surface wL can be discharged when the system is filled with water.
  • an air separation pressure tank is used. 2 extends horizontally from the cross cheese 7A through the ball valve 6C into the pipes P6 and P7 route from the radiator 8 to the radiator 8, and the auxiliary tank 2 'is disposed at the bent upper end of the branch pipe P6'.
  • air venting in the system will be exhausted at the momentum of water filling, and the flow rate needs to be 1.2m / sec or more.
  • water above the water level surface wL 1 , wL flows into the air separation pressure tank 2 and the auxiliary tank 2 ′, and when the water flows into the system with tap water, the inflow pressure is 0.
  • the pipe resistance is 0.4 Mpa, and the flow rate is 9.1 m / sec (when the water tap is fully opened, the amount of water is 15.1 L / min).
  • the auxiliary tank 2 ' may be disposed in any portion where water is present, and is positioned above the ball valve 6C for discharging water, so that water above the water level surface wL can be discharged.
  • the predetermined air region Za cannot be secured, the pressure in the system cannot be absorbed, and the weakest part of the equipment and piping will explode.
  • the auxiliary tank 2 when the square cylindrical heater unit box 1 is used in a lateral arrangement, the auxiliary tank 2 'has the lower side 2D on the upper side and the connection port J1 on the front side 2F and the connection port J2 on the rear side 2B. It is closed with the cap 2C, and the lower connection port J3 is preferably connected to the upper end of the branch pipe P6 ′ extending through the ball valve 6C from the cross cheese 7A for water filling and air venting.
  • the heater unit box 1 with the auxiliary tank 2 'connected to the ball valve 6C not only provides a hot water circulation system without any fear of explosion in the system, but also in the system from 1 kW to 3 kW, for example. It is possible to cope with an increase in the heat generation capacity accompanying an increase in the filling amount of water without changing the heater unit box 1, and it is easy to fill the system with water and to vent the air.
  • one heater unit box 1 is arranged corresponding to one radiator 8, even if one heater unit box 1 fails, other heater unit boxes 1 and Since the corresponding radiator 8 functions, the malfunction of the heating system in all the rooms of the house can be avoided, and the situation of stopping all the heating of the living part can be avoided.
  • the heater unit box 1 including the heating unit can be disposed adjacent to the radiator 8, there is no loss of heat release on the hot water circulation path from the heating unit to the radiator, and the heater unit box The heat release generated in 1 also serves as an indoor heating function, so that an indoor heating system in which heat loss of heating heat does not substantially occur.
  • the radiator 8 is of a hot water circulation type, the radiator 8 is radiated and heated without generating a radiated temperature, and each radiator itself is also radiated and heated by a separate and independent operation in each heater unit box 1. Can be freely adjusted. Also, when renewing the existing circulating heating system at the time of renovation, the heater unit box 1 of the present invention is simply placed in parallel with the existing hot water circulation radiator while leaving the old piping under the floor, inside the wall, etc. The heating system of the present invention can be easily updated.
  • the heater unit 1 can be reduced in size and weight, and if the radiator 8 is also a hot water circulation type, the conventional metal radiator is light and has no fear of corrosion, and there is no fear of burns. It can also be applied to plastic heatsinks that are not available, and can be applied not only to newly built buildings but also to heating systems for existing buildings.
  • the water filling and air venting work is easier than in the conventional example 1 (FIG. 7), and air can be vented simultaneously with the water filling into the system. Even if water exceeding the water level during operation flows into the pressure tank 2 and the auxiliary tank 2 ′, it is discharged together with the air vent. Therefore, no air venting device is required for the radiator, and the system internal pressure is reduced to the air separation pressure tank 2. Since it is absorbed by the auxiliary tank 2 ', it is safe and can be handled easily even by an engineer with little knowledge of heating.
  • FIG. 6 is an explanatory view of the arrangement of pressure tanks, (A) is a front view of the air separation pressure tank, (B) is a front view of the auxiliary tank, (C) is a side view of the auxiliary tank, and (D) is a water filling explanation.
  • FIG. It is a housing exploded perspective view of a heater unit box, (A) is a left side plate 1L, (B) is a right side plate 1R, (C) is an upper lid 1U, (D) is a diagram showing a lower lid 1D. Yes, (E) is a partially enlarged view of FIG.
  • FIG. 4D is an enlarged view of the surface
  • FIG. 4D is an enlarged view of a portion D in FIG. 5B
  • FIG. It is explanatory drawing of an air separation pressure tank
  • A) is a whole perspective view
  • B) is the front view seen from the arrow B of (A) figure
  • C) is CC line of (A) figure
  • D) is a vertical usage explanatory diagram.
  • the heater unit box 1 stores a hot water heating function including a heater, a circulation pump, etc. of an electric hot water circulation heating system, and can be arranged vertically or horizontally adjacent to a radiator.
  • the main body is composed of a main body box 1 and various devices to be housed.
  • 4A and 4B are exploded perspective views of the housing 1, wherein FIG. 4A shows the left side plate 1L, FIG. 4B shows the right side plate 1R, FIG. 4C shows the upper lid 1U, and FIG. 4D shows the lower lid 1D.
  • FIG. 5 (A) is a perspective view assembled to a housing
  • FIG. 5 (B) is a cross-sectional view taken along line BB of FIG. 5 (A).
  • the casing of the heater unit box is a 1.2 mm thick steel plate processed with a pressing die.
  • the left side plate 1L and the right side plate 1R are assembled in a square tube shape, and the upper lid 1U and the lower lid 1D are fitted to both ends.
  • it is a rectangular tube having a width L1 of 180 mm, a depth W1 of 160 mm, and a height h1 of 590 mm.
  • the left side plate 1L is a plate material having an L-shaped cross section and fixedly housing various devices on the inner surface, and has a height h11 of 550 mm and a width L1 (180 mm) of the housing.
  • five horizontally long electric wire insertion holes H1 having a length of 60 mm and a height of 40 mm are formed at equal intervals (100 mm intervals) on the upper and lower sides, and the other side LS2 serving as the depth W1 of the housing.
  • five vertically long air circulation holes H3 having a width of 20 mm and a height of 40 mm are formed at positions corresponding to the wire insertion holes H1.
  • a corner side 1A having a small width W11 (standard: 35 mm) is bent and extended from the ends of the one side LS1 and the other side LS2, and further, As shown in FIG. 5D, the anchor piece 1C having an L-shaped cross section is extended inward by a small dimension d12 (standard: 7 mm). In this case, the upper and lower ends of the anchor piece 1C are cut off by a small dimension d11 (standard: 10 mm). Then, screw holes H2 are formed in the upper and lower ends of each corner side and the upper and lower ends of the corner portion of the left side plate 1L.
  • the one side LS1 in which the wire insertion hole H1 is arranged has a storage function, so that the reinforcing ribs 1G extending in the vertical direction are small in place (standard: two locations at L11 (40 mm) from each corner). It is formed in the form of a semicircular protrusion with a dimension d15 (standard: 6 mm).
  • the right side plate 1R is aligned and integrated with the left side plate 1L to form a housing.
  • the right side plate 1R is a lid plate to be removed during maintenance of various functional devices arranged on the inner surface of the left side plate 1L, as shown in FIG.
  • the bent corner portion between the one side RS1 and the other side RS2 of the L-shaped cross section is formed on a smooth surface as an inclined side 1R ′ having a width L10 (standard: 86 mm), and the end of the one side RS1 and As shown in FIGS.
  • the end of the other side RS2 is bent inward to form a contact anchor piece 1F protruding a small dimension d12 (standard: 7 mm), Screw holes H2 are formed above and below the ends of the one side RS1 and the other side RS2.
  • the upper lid 1U has the same shape as the lower lid 1D, and is fitted and locked to the upper end of the rectangular tube portion 1K of the housing 1 formed by the left side plate 1L and the right side plate 1R.
  • the top plate 1T has a depth W1 of 160 mm and a width L1 of 180 mm, and the right plate 1R from the position of the length W10 (standard: 85 mm) from the bent portion EP at the opposite portion of the right plate 1R.
  • a rising piece 1P having a height of h10 (20 mm) in the form of a right angle bend is integrally provided.
  • the upper lid 1U is a box lid form of the top plate 1T and the rising piece 1P, and is abutting and locking with a protruding length d10 (10 mm) on the inner surface of the rising piece 1P other than the protruding corner of the rising piece 1P.
  • the pieces 1V are abutted and fixed, and screw holes H2 corresponding to the screw holes H2 of the left side plate 1L and the right side plate 1R are arranged in each abutting locking piece 1V.
  • the lower lid 1D is a solid object symmetrical to the upper lid, and a rising piece 1P having a height h10 of 20 mm is arranged around the bottom plate 1B having the same shape as the top plate 1T.
  • the contact locking piece 1V is fixed to the inner surface of the rising piece 1P in a projecting form having a height d10 (10 mm), and the screws at the lower ends of the left side plate 1L and the right side plate 1R of the contact locking piece 1V. Screw holes H2 are arranged at positions corresponding to the holes H2.
  • the assembling of the casing is such that the edges of the rising pieces 1P of the lower lid 1D and the upper lid 1U collide with the upper and lower edges of the left side plate 1L and the right side plate 1R, and each contact locking piece 1V is It is only necessary to abut on the inner surfaces of the left side plate 1L and the right side plate 1R and to fix the screws.
  • the housing 1 can be disassembled and assembled by screw fixing means of each rising piece 1P, the left side plate 1L and the right side plate 1R. And each steel plate which forms an outer surface can be formed in a flush manner.
  • FIG. 6 (A) is an overall perspective view of the air separation pressure tank 2
  • FIG. 6 (B) is a front view as viewed in the direction of arrow B in FIG. 6 (A)
  • FIG. FIG. 6D is a longitudinal sectional view illustrating the air separation pressure tank 2.
  • the air separation pressure tank 2 is arranged in the hot water circulation path of the heater unit box 1 and is a novel tank that does not require the expansion tank, air separator, drain valve, and safety relief valve of the conventional example 1 (FIG. 7). An embodiment of a 1 kW heating tank will be described.
  • the air separation pressure tank 2 is a semi-transparent plastic resin molded product having a general wall thickness of 0.6 mm. As shown in FIG. 6 (C), the lower part has a length (L2) of 140 mm and a height (h3). It has a box shape with a width of 55 mm and a width (W2) of 50 mm, and the upper part has a truncated pyramid shape with a width (W3) of the upper side 2T of 38 mm, a length (L3) of 70 mm, and a height (h4) of 30 mm.
  • the opposing front side 2F and rear side 2B are 30 mm (d5) upward from the lower end, at the center position of the width W2, and the upper side 2T is at the center of the width W3, at a position 55 mm (L5) from the rear side 2B.
  • the connection ports J1, J2 and J3 having an outer diameter of 13 mm and a wall thickness of 0.5 mm are arranged.
  • connection ports J1, J2, J3 is provided with a 6 mm projection 2G having a width of 1 mm and a projection height of 0.5 mm in order to ensure the attachment of the rubber pipe 5A used as the pipes P1 to P7 or the rubber cap 2C. Place two places at intervals.
  • a front blade 2A and a rear blade 2A ′ are arranged in a passing manner on the left side 2L and the right side 2R.
  • the front slat 2A has a width W5 of 35 mm, a thickness of 6 mm, and a configuration in which the rear end is inclined 30 ° upward, the front end is a distance (L6) 25 mm from the front side 2F, and the height (h5) from the lower side 2D.
  • the rear blade 2A ′ has a width W6 of 30 mm and a thickness of 6 mm, and is inclined upward by 30 °, the front end is a distance (L5) 55 mm from the rear side 2B, and the lower side 2D
  • the height (h6) is 35 mm and the capacity in the tank 2 is 0.5 L (liter).
  • inflow water Fin flows in from the front side connection port J1 at a flow velocity of 0.885 m / s, and becomes a slow flow F2 with a flow velocity of 0.118 m / s below the front blade 2A.
  • the flow F1 has a lower flow velocity than the lower flow F2, the water and air are separated, and the air reaches the upper air zone Za.
  • the unseparated air at the front blade 2A has a low flow F4 of 0.06 m / s below the rear blade 2A ', and the circulating water is two blades 2A, 2A'.
  • the water in the water is completely separated by agitating the flow into the low-speed flow of F1, F2, F3, and F4. Since the level of the circulating water expanded at high temperature (80 ° C.) reaches wL 2 and the upper side connection port J3 is closed with the rubber cap 2C, the air zone Za is the pressure air under the allowable pressure. Become.
  • the tank 2 When the tank 2 is used vertically, as shown in FIG. 6D, the tank 2 is disposed with the front side 2F facing upward, and the inflow water Fin flows in from the connection port J3 on the upper side 2T, and the connection port J2 on the rear side 2B.
  • the water level surface at the normal temperature, that is, at the start of operation is wL 1 and the tank 2 having an internal capacity of 0.5 L (liter) has a water capacity of 0.19 L and a space volume (air amount) of 0. If the heating heating temperature reaches 80 ° C. at 31 L, the water level reaches wL 2 .
  • the inflowing water Fin of 0.885 m / s abruptly decreases in flow velocity in the tank 2 and hits the rear blade 2A ′, and the flow F1 that is guided upward to the blade 2A ′ is generated by the front blade 2A. It becomes surface flow F3 and back flow F4, and separates the air by making it a stirring and diversion at a low flow rate together with the downward flow F2, and the separation air becomes pressure air in the air region Za (standard: 0.04 Mpa or less).
  • the circulation pump 3 may be any conventional pump that can be disposed on the lower lid 1D of the heater unit box 1. If the radiator 8 is made of plastic, a conventional resin electromagnetic pump is used.
  • the resin electromagnetic pump is inexpensive, lightweight, has good transport and installation workability, and has a quiet noise of 38 db or less, product number PMD-141B (single-phase 100V) manufactured by Three-phase Electric Co., Ltd., or Product number PMD-142BSG (for single phase 200V) may be employed.
  • the pipe heater 4 is an SC heater manufactured by Thermal Engineering Co., Ltd., which is an energy-saving type having a high power density of 30 w / cm 2 and a thermal efficiency of 95% by thermally spraying an insulating layer, a conductive layer, and a heat insulating insulating layer on a stainless pipe. (Product name) may be adopted.
  • Each pipe heater 4 of 1 kw has a pipe shape with an outer diameter of 15.88 mm, a length of 280 mm and a wall thickness of 2 mm, and the outer periphery of both ends is roughened by sandblasting, and the heating capacity If it is 3 kw, three may be employed. Then, if the heat insulating material having a thickness of 20 mm is coated on the outer periphery of the pipe, the heat generation effect is improved.
  • the piping pipe 5A is a pipe for piping P1 to P7 that forms a flowing water path in the heater unit box 1, and is excellent in durability, heat resistance, cold resistance, solvent resistance, light weight, and flexibility.
  • a conventional rubber pipe of ethylene-propylene rubber (EPDM) having a wall thickness of 3 mm and an inner diameter of 14 mm is adopted.
  • Ball valves 6A, 6B, 6C are water path opening / closing valves arranged in the heater unit box 1.
  • the opening / closing valve has a 3mm diameter opening / closing hole in the cylindrical part, and a hexagon wrench is inserted into the hole.
  • a Zalho ball valve from Valofick (Denmark) which has a pipe shape of 29.5 mm in length and has a threaded part with a diameter of 12 mm at one end, is adopted.
  • the cheeses 7 and 7A are used for connection of water paths in the heater unit box 1.
  • the cheese 7 is a T-shaped joint from three sides
  • the cross cheese 7A is a cross-shaped joint that can connect pipes from four sides.
  • a conventional T-shaped cheese which is a metal fitting and has a diameter of 26 mm and a length of 46 mm, in which a joint protrudes 9 mm perpendicularly from the center in the length direction, is adopted.
  • the air separation pressure tank (main tank) 2 and the auxiliary tank 2 ′ are both the same tank, and as shown in FIGS. 2 (C) and 2 (D), the upper side 2T is fixed to a vertical type as a side surface.
  • the connection port J3 of the upper side 2T located on the side surface of the main tank 2 is connected to the pipe heater 4, the connection port J2 of the rear side 2B is connected to the radiator 8, and the connection port J1 of the front side 2F is closed with the cap 2C.
  • a cheese 7A having a ball valve 6C is connected to a pipe (pipe) P6 below the air separation pressure tank 2, and a ball valve 6B and a ball valve 6B are provided under the cheese 7A.
  • the cheese 7 provided with the ball valve 6A is disposed below the pipe P7.
  • the branch pipe P6 ′ extends horizontally from the cheese 7A, and the connection port J1 located on the lower surface of the auxiliary tank 2 ′ is connected to the bent upper end of the branch pipe P6 ′.
  • the auxiliary tank 2 connects the connection port J1 of the lower front side 2F and the ball valve 6C via the branch pipe P6', and connects the connection port J2 of the upper rear side 2B and the upper side 2T of the side side.
  • the connection port J3 is closed with a cap 2C and connected to the circulation system pipe from the air separation pressure tank 2 to the heat radiating section 8 with a branch pipe P6 'between the pipes P6 and P7. Absorbs pressure in the system that is increased by water molecule activity.
  • the pipe heater 4, the circulation pump 3, the thermostat (not shown), the temperature sensor (not shown) wires are wired, the printed circuit board (not shown), and the top cover Connected to the operation panel 9B fitted in 1U. If the upper lid 1U and the right side plate 1R are screwed to the integrated left side plate 1L and lower lid 1D, the heater unit box 1 is obtained.
  • the radiator 8 is attached to the wall surface WS with fixing brackets, the right side plate 1R of the vertical heater unit box 1 is removed by removing the screw, and the forward pipe (supply pipe) S and the return pipe (return pipe) R are connected to the radiator. 8 Connected to the lower hot water supply port 8S and the hot water discharge port 8R, and through the appropriate holes of the five wire insertion holes H1 drilled in the left side plate 1L, the power supply wires in the heater unit box 1 and the wall surface WS An electric wire drawn from the electric box 9A embedded in the wire is connected.
  • the heater unit box 1 is fixed with the left side plate 1L provided with the reinforcing rib 1G as the wall surface WS side.
  • the electric wire of the heater unit box 1 is concealed in the heater unit box 1 or the electric box 9A on the wall surface, and the position of the electric wire insertion hole H1 can be freely selected without hooking the electric wire cord. Therefore, the heater unit box 1 can be laid with good workability and good appearance.
  • FIGS. 3A and 3D the ball valve 6B is closed, the ball valves 6A and 6C are opened, and a tap faucet (a) is connected to the ball valve 6A with a pressure hose (c). Then, a short transparent hose (d) is attached to the ball valve 6C, and the head (e) is maintained by raising 1 m, and the tip of the transparent hose (d) is inserted into the bucket (b). Next, the water tap is opened and tap water flows from the ball valve 6A at a water pressure as shown by a water flow w.
  • the introduction of the initial pressure of 0.01 Mpa in the system is performed by filling the system with water and venting the air by closing the ball valve 6B and making the water flow w from the lower side.
  • the ball valves 6A and 6C are opened, the ball valve 6A is used as a water supply port, the ball valve 6C is used as a discharge port, the ball valve 6A and a water tap (a) are connected by a pressure hose (c),
  • the valve 6C and the bucket (b) containing a little water are connected via the transparent hose (d) while maintaining the lift (e), and the transparent hose (d) on the bucket (b) side is connected to the ball valve Hold 1m above 6C.
  • the transparent hose (d) if the transparent hose (d) is adopted, the bubbles can be visually observed, and if water is put into the bucket (b) and the tip of the transparent hose (d) is secured in the water, the bubbles will float on the surface of the water. Visible. If the transparent hose (d) is held at a lift (e) of 1 m from the ball valve 6C, the system internal pressure becomes zero when the water supply is stopped, and the system internal pressure is 0.01 MPa by the lift pressure of the transparent hose (d). Thus, the initial pressure set in the head (e) can be introduced into the filling water in the system.
  • each of the air separation pressure tank 2 and the auxiliary tank 2 ′ has a predetermined flow rate with the water flow w accompanied by the water pressure.
  • the system pressure lift the transparent hose (d), a predetermined initial pressure is stabilized to 0.01 Mpa, an air separation pressure tank 2 water level surface WL 1, the auxiliary tank 2 'level surface wL ( The water that was above the water level surface was discharged with the air into the bucket (b) through the ball valve 6C and the transparent hose (d), and the water was discharged from the front side 2F 10mm to 20mm).
  • 1 for 3kw heating capacity When the amount of water of 4L is 1kw heating capacity, the amount of water of 4.4L can be filled.
  • the ball valve 6C is closed and the ball valve 6B is opened to secure a water passage during operation.
  • the pressure in the system is adjusted by placing a pressure reducing valve at the water inflow section to ensure the specified pressure, and using a pressure gauge attached to the hot water boiler. If the pressure is high, the safety relief valve will release it, but there is no valve to reduce tap water to the initial pressure (0.01 MPa) because the pressure is too low. Since it is difficult to store in the box 1, the present invention is to hold the old transparent hose (d) at a high place and load it with a lifting pressure.
  • the air separation pressure tank 2 may be arranged horizontally, that is, with the lower side 2D on the lower side and the upper side 2T on the upper side, and the auxiliary tank 2 'is arranged in the horizontal direction, ie, the lower side 2D on the upper side and the upper side 2T on the lower side.
  • the air separation pressure tank 2 is arranged upside down, and the branch pipe P6 ′ is extended upward from the middle of the system internal pipes P6 and P7 via the ball valve 6C, and is connected to the upper end of the branch pipe P6 ′.
  • the auxiliary tank 2 ′ can discharge the inflowing water and secure the air essence Za as the pressure tank 2 ′.
  • the heater unit box 1 is arranged such that the inclined side 1R ′ in the form of a rectangular tube, that is, the inclined side of the right side plate 1R is the front surface, and the operation panel 9B is arranged on the inclined side 1R ′, the appearance is also improved. It is also preferable in terms of operation.
  • the air separation pressure tank 2 has the form shown in FIG. 6D, and the heating water via the pipe heater 4 flows into the connection port J1 on the front side 2F and flows out from the connection port J2 on the rear side 2B. Since the connection port J3 of the upper side 2T is closed by the cap 2C, the air region Za necessary for the pressure tank 2 'can be secured. Then, the auxiliary tank 2 ′ has an upside-down configuration as shown in FIG.
  • connection port J 1 on the front side 2 F and the connection port J 2 on the rear side 2 B are closed with a cap 2 C, and the lower side upper side 2 T
  • the connection port J3 is connected to the upper end of the branch pipe P6 ′ via the ball valve 6C, and most of the upper part in the auxiliary tank 2 ′ serves as an air zone Za for absorbing pressure in the system.
  • the control turbulence caused by the diversion of the circulating hot water by the front blade 2A and the rear blade 2A 'in the air separation pressure tank 2 is prevented. Occurrence causes an air separating action and an action of storing air in the upper air zone Za of the separated bubbles, and the heater unit box 1 has the same function as the vertical arrangement, and can achieve the intended purpose of the invention.
  • the tank 2 ′ also absorbs the system internal pressure as a pressure tank together with the air separation pressure tank 2.
  • an auxiliary tank 2 ′ having the same structure is additionally provided in addition to the air separation pressure tank 2, but the auxiliary tank is simply added to the pressure absorbing air area Za of the air separation pressure tank 2 and further to the air area. Since Za is added to increase the pressure absorption function in the system, the auxiliary tank 2 'can be omitted in a heating system with a small amount of water of 1 kW or less.

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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)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Central Heating Systems (AREA)
PCT/JP2009/055425 2008-04-03 2009-03-19 電気温水循環暖房システム Ceased WO2009122926A1 (ja)

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JP4447040B2 (ja) * 2008-03-17 2010-04-07 株式会社テスク 室内暖房用の放熱器に接続するための電気ヒーターユニットボックス
CN102705894A (zh) * 2012-05-16 2012-10-03 顾海斌 一种碳纤维取暖器
KR101639188B1 (ko) * 2014-11-19 2016-07-13 주식회사 경동나비엔 수배관 관로 일체형 체크밸브를 구비한 보일러
KR20170035402A (ko) 2015-09-22 2017-03-31 김성용 난방기의 작동방법 및 그 장치
CN107860246B (zh) * 2017-12-07 2024-01-12 中国恩菲工程技术有限公司 渗沥液循环加热装置
CN111023245B (zh) * 2019-12-20 2021-08-17 台州半城暖通科技有限公司 一种暖气片管道暗装引出盖及暖气片管道安装方式
CN114440287B (zh) * 2022-01-24 2025-01-28 佛山市顺德区园丰电器有限公司 一种水循环散热取暖器

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JPH024136A (ja) * 1988-06-21 1990-01-09 Matsushita Electric Ind Co Ltd 加熱装置

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KR101230782B1 (ko) 2013-02-06
RU2433354C1 (ru) 2011-11-10
JP2009250483A (ja) 2009-10-29
CN101978219B (zh) 2013-08-07

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