JP4916034B2 - Electric hot water circulation heating system - Google Patents

Description

  The present invention relates to an electric hot water circulation heating system used for indoor heating.

Conventionally, various types of indoor hot water heating systems have been proposed, and there are a conventional example 1 shown in FIG. 11 and a conventional example 2 shown in FIG.
Conventional Example 1 (FIG. 11) is a typical hot water heating system listed in Non-Patent Document 1, in which FIG. 11 (A) is a schematic layout diagram of the heating system, and FIG. 11 (B) is a front view of a radiator. FIG. 11C is a side view of the radiator.

  That is, in Conventional Example 1 (FIG. 11), a boiler equipped with a pressure gauge, a safety relief valve, and a drain valve is heated with electricity, kerosene, gas, etc., and warm water heated by the hot water boiler is connected to the piping and the outgoing header. The water is sent to the radiator in each room through the room to heat the room, and the hot water is returned from the radiator to the boiler via the piping and the return side header and reheated. A pump, a sealed expansion tank, an air vent valve, a header, etc. are accommodated, and an air vent valve, a thermo stud valve, and a hot water inlet / outlet valve are also arranged in each radiator.

  In addition, the water filling and draining in the system of Conventional Example 1 (FIG. 11) 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. Open the water supply valve, operate the circulation pump, and carry out for each radiator with piping for each system branched by the header. Each radiator is one of the stops located on the lower side. Connect the hose of the feed water pump with a water tank to the water valve, connect the return hose to the other water stop valve, operate the water pump, circulate the water in the radiator several times, An air key is inserted into the air vent attached to the radiator and turned to discharge the air, thereby filling the radiator.

  Conventional example 2 (FIG. 12) is cited as Patent Document 1, and as shown in FIG. 12, a large number of heat dissipating fins are arranged on the outer peripheral surface of a linear heating copper tube, and heating copper is used. In the heating chamber in the tube, a sheathed heater is disposed over almost the entire length of the heating copper tube, and the heating chamber is filled with an aqueous solution. It is a heater that is arranged and injects inert gas into the expansion chamber to reduce the size of the entire heater, and heats the radiating fins in a very short time, thereby accelerating the initial rise of heat dissipation.

Japanese Utility Model Publication No. 6-18813

Morinaga Engineering Co., Ltd. Brochure (No. 0402-5C-dB) “Morinaga Hot Water Panel Heating Technical Data”, “Design, Construction, Operational Precautions” section and “Thermo Panel Handling Method” Term

  The hot water circulation heating system of Conventional Example 1 (FIG. 11) includes a hot water boiler provided with a safety relief valve, a pressure gauge, a drainage gate valve, and a water supply gate valve, a sealed expansion tank provided with a safety relief valve, And a return header, a hot water circulation pump, an air separator with an air vent valve installed between the boiler and the circulation pump, a radiator group with a partition valve for water supply and drainage, and piping connecting each device and valves Since it consists of pipes and is connected to indoor radiators from the boiler room provided in the building by piping under the floor, in the walls, and in the ceiling, there are the following problems.

(I). When the hot water circulation heating system becomes obsolete, rust occurs on the metal panels (radiators) and pipes, hot water does not circulate or water leaks occur, and the floor, walls, and ceiling are soiled. Since repairs are buried piping, recovery requires time and money.
(B). When the circulation pump or the like in the system breaks down, the heating of the entire system is stopped, and when the equipment is repaired or replaced, piping change work such as changing the specifications of the boiler body occurs.
(C). Because of the piping from the hot water boiler to each radiator, heat loss due to heat radiation in the piping path becomes large.
(D). Each radiator placed in the living room is provided with a water supply / drainage gate valve for maintenance and the like, and the air vent and the thermostat or the manual valve protrude, so the appearance is impaired.

  In addition, when the temperature of the thermostat valve exceeds the set temperature, the temperature sensing element incorporated in the thermostat valve thermally expands and restricts the flow of hot water to the radiator to suppress the rise in room temperature. When the temperature falls below the set temperature, the temperature sensor contracts, the valve opens automatically, hot water enters the radiator, and the temperature rises. The thermostat valve set once changes the room temperature. Other than the above, there is no need to touch, but since it operates by sensitively sensing the ambient temperature, it can avoid direct sunlight, and a heat source such as a desk lamp cannot be placed nearby.

In addition, the manual valve manually adjusts the hot water flow rate, which is cumbersome to handle and difficult to adjust the room temperature.The circulation pump is operating even when the manual valve is closed. The sound becomes high.
And when both the thermostat valve and the manual valve allow hot water to flow into each radiator via the forward header, the thermostat valve and manual valve are controlled to control the flow rate balance for each system. The room temperature adjustment by the valve is difficult to homogenize each radiator system, and also gives a variable load to the hot water circulation pump.

  In addition, water filling and air venting into the system is carried out in the direction away from the hot water boiler with respect to the piping and radiator of each system branched by the header by opening the water supply valve to the hot water boiler. There is a part where the air does not escape due to the step, so it is difficult to vent the air, it is essential to vent all radiators and water filling, and if the air in the system can not be properly replaced with water, The circulation in the system must be stopped and re-executed due to the air in the piping, and the air venting work is a bottleneck in system operation.

In the electric heater of Conventional Example 2 (FIG. 12), the ratio of the heat radiating portion is smaller than the entire volume of the heater, and the hot water does not circulate only by heating the aqueous solution in the sheathed heater. Partial spots occur and the amount of heat released 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 thermostat is frequently turned on and off, 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 circulation part and makes a pair arrangement. A new electric hot water circulation heating system that is used, easy to maintain, and that can be suitably used for renovation is provided.

The present invention, as shown in FIGS. 1 and 2, 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 plastic first heat dissipating panel 81 and a second heat dissipating panel 82 made of plastic in which a large number of small diameter vertical pipes 8B are arranged in communication between upper and lower large diameter horizontal pipes 8A. The panel is integrated into a hot water circulation form while maintaining a gap gp between opposing surfaces that prevents cold air flow intervention, and an air vent valve 20 that communicates with the air vent hole H8 is disposed on the closing plate 8F at one end of each upper end horizontal pipe 8A. The radiator panel 81, 82 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 is water-filled with an air separation pressure tank 2, a circulation pump 3, and a pipe heater 4. Fitting 6, h Accommodating the hot water circulation function connected by piping via's joint 7, which are connected with the radiator 8 in forward pipe S and the return pipe R.

In this case, the new air separation pressure tank 2 has the functions of the expansion tank and the air separator in the conventional example 1 (FIG. 11), and the capacity is the room temperature of the water refluxed in the heating system. It may be determined based on the amount of time, the amount at the time of heating, and the amount of separated air, and a plurality of auxiliary tanks may be adopted as necessary.
Also, the circulation pump 3, the pipe heater 4, the ball valves 6A and 6A 'attached to the water-filled joint 6 and the cheese joint 7 constituting the heater unit box 1 can be prepared with conventional products, and the circulation pump 3 is made of a conventional resin. An electromagnetic pump or a metal circulation pump may be used, and the pipe heater 4 employs a plurality of 1 kW heat generating SC heaters (trade names) manufactured by Thermal Engineering Co., Ltd. according to the heating capacity and excellent in energy saving. The pipe for use may be made of a conventional ethylene-propylene rubber that is excellent in durability, heat resistance, and solvent resistance.

Further, the heater unit box 1 is packed with the hot water circulation function of the conventional example 1 (FIG. 11) as a package, but even if it is vertically arranged on the side surface of the radiator 8, it is horizontally arranged below the radiator 8. However, in other words, it is configured so that it can be used both vertically and horizontally, and in a 1 kw to 3 kw heating system, the heater unit box 1 typically has a width L1 of 180 mm, It is a small box with a square tube shape with a depth W1 of 160 mm and a height h1 of 590 mm.
The radiator 8 can be a plastic radiator disclosed in Japanese Patent Application Laid-Open No. 2001-116475. Typically, a large number of small diameters are provided between the upper and lower large-diameter horizontal pipes 8A shown in FIGS. A plastic heat dissipating panel 81, 82 communicating with the vertical pipe 8B group is integrated.

Accordingly, in the heating system of the present invention, 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.
Moreover, in the heating system of this invention, since the heater unit box 1 which incorporates a heating part can be arrange | positioned adjacently in the same room as the heat radiator 8, from the heating part (boiler) of the prior art example 1 (FIG. 11). There is no heat loss due to heat dissipation from the piping in the path to the radiator, and even if heat dissipation occurs from the pipe in the heater unit box 1, it becomes heat dissipation into the room, and the heat of the heating heat is substantially There is no loss.

Further, since the radiator 8 is a hot water circulation type panel composed of a group of plastic pipes, the radiator 8 can be heated without causing uneven heat radiation, and each radiator 8 itself can also be heated by a single operation in each heater unit box. Since it is heat radiation, heat loss does not occur, and necessary heating for each living room can be performed as appropriate.
And since there is no protrusion of a thermostat valve, an air vent, and a gate valve from the heat radiator 8 like the prior art example 1 (FIG. 11), the indoor heating system which is safe and excellent in the design effect is provided.
Moreover, since there is no piping under the floor, in the wall, or on the ceiling, 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.
In addition, when renewing the conventional heating system at the time of renovation, 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.
In the present invention, for example, as shown in FIGS. 2 and 3, the radiator 8 is provided with two radiating panels of the same size, ie, a first radiating panel 81 and a second radiating panel 82. It is also an essential requirement that an air vent valve 20 communicating with the air vent hole H8 is arranged on the closing plate 8F at one end of each upper end horizontal pipe 8A while maintaining the gap gp between the opposing surfaces to prevent intervention and integrating with the hot water circulation form. Yes .
Further, as shown in FIG. 4A, for example, the air vent valve 20 is provided with an air vent hole H8 above the closing plate 8F at one end of the upper end horizontal pipe 8A, and provided with an opening / closing screw 20N outside the closing plate 8F. The cap 20A may be fixed .
In this case, the gap gp between the opposing surfaces of the first heat radiating panel 81 and the second heat radiating panel 82 prevents the cold air from intervening between the two panels, and raises only the heated air. (40 mm or less), and the gap gp is typically 18.5 mm .
Then, the first heat radiating panel 81 and the second heat radiating panel 82 are integrated in the form of hot water circulation, as shown in FIGS. 3A and 3D, the heat radiating panels 81 and 82 are connected to the upper horizontal pipe 8A. The vertical pipe 8B group is connected and communicated between the horizontal pipe 8A at the bottom and the lower end, the side ends of the upper and lower horizontal pipes 8A are closed by a closing plate 8F, and hot water is supplied to the other end of the lower end horizontal pipe 8A of the first heat radiation panel 81. A hot water discharge port 8R is attached to the opposite end of the lower end horizontal pipe 8A of the second heat radiating panel 82, and the first heat radiating panel 81 and the second heat radiating panel 82 are connected to each other as shown in FIGS. ), Only the opposite end (left end) of the upper end horizontal pipe 8A is integrated with the communication pipe 8C, and the other end (right end) of the upper end horizontal pipe 8A and the opposite ends of the lower end horizontal pipe 8A are integrated with the spacer pipe 8D. The top horizontal pipe of the second heat dissipating panel 82 If the water flow control closing plate 8F is arranged at one end of A and the other end of the lower end horizontal pipe 8A, the hot water f1 flowing into the first heat radiating panel 81 is f1 → f2 → f3 → f4 → f5 → f6 → f7 → It is possible to circulate hot water through a route of f8 → f9 → f10 → f11 .
Therefore, each vertical pipe 8B group which constitutes a heat radiating surface by the first heat radiating panel 81 and the second heat radiating panel 82 is heated by a uniform and warm water flow from the lower end horizontal pipe 8A to the upper end horizontal pipe 8A, The first heat radiation panel 81 and the second heat radiation panel 82 provide a heating surface free from heating temperature spots, and the opposed surface gap gp between the panels 81 and 82 prevents the cold air from intervening from above, and the heating air rises. Therefore, the radiator 8 provides a heating surface having a large amount of heat radiation without heating temperature spots, and smoothly heats up the surrounding indoor air to provide a heating action by mild natural convection .
Moreover, since each of the heat dissipating panels 81 and 82 connects the vertical pipe 8B group in an orthogonal form between the upper and lower horizontal pipes 8A, the water filling into the closed circulation path in which there are many communicating orthogonal portions of the pipes 8A and 8B. In the work, air is likely to remain in the circulation path, but the air vent valve 20 is arranged in the upper side pipe 8A of each heat dissipating panel 81, 82 where air is most likely to remain when water is filled. The water filling operation provides a heating system in which the completion of the operation can be confirmed in a state where the injected filling water into the circulation path flows out of the air vent hole H8 and the air vent valve 20, and the handling operation is easy .

  Further, as shown in FIGS. 1 and 2, the radiator 8 includes an upper frame 13 having an air hole Hu on the upper surface for supporting the upper end horizontal pipe 8A in a concealed form, and a lower frame 14 for concealing the lower end horizontal pipe 8A. The frame F is added by the side frame 15 that plays the right and left column functions, the upper joint 16 that connects the upper frame 13 and the side frame 15, and the lower joint 17 that connects the lower frame 14 and the side frame 15. It is preferable to do this.

  In this case, the upper frame 13 only needs to have an air hole Hu that discharges the heated air rising from the heat dissipation panels 81 and 82 and can support the heat dissipation panels 81 and 82. As shown in FIG. 2 (A), the frame 13 sandwiches the upper end horizontal pipe 8A between the lower contact piece Pd and the upper contact piece Pu, and the lower frame 14 as shown in FIG. 2 (A). As shown in FIG. 1, the side frame 15 is integrated with the upper frame 13 via the upper joint 16 and the lower frame 14 via the lower joint 17 as shown in FIG. It has become.

Accordingly, the radiator 8 has a configuration in which only the vertical pipe 8B group is exposed because both the upper horizontal pipe 8A and the lower horizontal pipe 8A are covered with the frame F, and the vertical pipe 8B group and the upper and lower horizontal pipes 8A It is possible to cover the joint part, and it is rich in design, and it becomes a radiator that can fully exhibit the heat dissipation action.
Moreover, the frame F supports the heat radiation panels 81 and 82 on the upper end horizontal pipe 8A, holds the heat radiation panels 81 and 82 in a suspended state, and the side frame 15 serves as a support column. It can cope with vertical strain caused by expansion.

  Further, according to the present invention, the heater unit box 1 includes, for example, as shown in FIGS. 5 and 6, a long rectangular tube portion having an L-shaped cross section in which a long left plate 1L and a right plate 1R are joined. 1K and an upper lid 1U and a lower lid 1D that are detachably fitted to both ends of the rectangular tube portion 1K, and a left-side plate 1L having an L-shaped cross section has a plurality of upper and lower sides at equal intervals on one side LS1. 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.

In this case, the left side plate 1L attaches a support material such as a device to the inner surface, and the right side plate 1R plays the role of a lid of the rectangular tube portion 1K.
In addition, 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.
When the heater unit box 1 is used upright, the operation panel 9E is disposed on the upper lid 1U. When the heater unit box 1 is used as a horizontal type, the operation panel 9E is provided on the right side plate 1R that performs the lid function of the rectangular tube portion 1K. Should be arranged.

Accordingly, by removing the upper lid 1U and the lower lid 1D, the rectangular tube portion 1K can be disassembled into a left side plate 1L and a 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 of the portion 1K.
In addition, the heater unit box 1 is also arranged in each room, since the wire insertion holes H1 are arranged in multiple stages in series, the connection position of external electric wiring can be selected, and the arrangement in a form that does not impair the appearance is possible. Is possible.
Moreover, since the outside indoor air can flow through the wire insertion hole H1 and the air circulation hole H3 in the heater unit box 1, 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.

  Further, as shown in FIG. 5, 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 connection are arranged at both ends of the right side plate 1R having the L-shaped cross section. It is preferable to arrange the screw hole H2 and screw the screw hole H2 of the upper lid 1U and the lower lid 1D with the screw hole H2 of the left side plate 1L and the right side plate 1R.

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 provided with a water-filled joint, cheese joint, air via a conventional support member. In order to attach each necessary equipment such as a separation pressure tank, as shown in FIG. 5A, the sides LS1 and LS2 and the corner side 1A of the left side plate 1L protrude outward by a small size (standard: 6 mm). It is preferable to arrange the reinforcing rib 1G.
The reinforcing rib 1G provides a gap for absorbing unevenness with the wall surface WS when the heater unit box 1 is disposed along the wall surface WS.

Therefore, 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.

  Further, as shown in FIG. 7, the air separation pressure tank 2 disposed in the heater unit box 1 includes a lower side 2D, a front side 2F, a rear side 2B, an upper side 2T, and both side sides 2L and 2R, and the upper side 2T is the front side. It is a box shape that is continuous with the front side 2F at the inclined side Sf and the rear side 2B at the rear side inclined side Sb, and the connection port J1 is connected to the upper and lower central part of the front side 2F, and the upper and lower central part of the rear side 2B is connected. The port J2 is provided with a connection port J3 at the rear part of the upper side 2T, and the two blades 2A and 2A 'inclined and raised backward are formed between the two sides 2L and 2R. The rear slat 2A 'is arranged at the upper position corresponding to the lower side of the upper side connection port J3 at the position corresponding to the rear side of the connection port J1 on the front side.

In this case, 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. Calculated and determined from the air pressure in the tank 2, 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. In addition, when the heater unit box 1 is used vertically, the connection port J3 and the connection port J2 may be determined to be below the water level.
Further, 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.

And 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 1.5 mm. With regard to the radiator 1 kw, in the vertical usage mode, the amount of water is 0.19 L (liters) at room temperature and the pressure in the system is 0.01 MPa. (Micropascal) At 80 ° C, the amount of water is 0.26L, and the system internal pressure is 0.04Mpa. In horizontal use, the water amount is 0.28L at normal temperature, the system internal pressure is 0.01Mpa, and the water amount is 0.34L at 80 ° C. The pressure in the system is 0.04 Mpa.
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.

Therefore, in the air separation pressure tank 2 of the present invention, 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. In combination with the rapid drop in the flow velocity in the tank, 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. Thus, an air separation pressure tank that does not require the arrangement of the safety relief valve and the air vent valve of the conventional example 1 (FIG. 11) is provided, and one of the total circulation system excluding the radiator of the conventional example 1 (FIG. 11). Can be stored in the heater unit box 1, the heater unit box 1 can be used vertically or horizontally, and the heater unit box 1 can be downsized.
In addition, since the air separation pressure tank 2 can be manufactured while being reduced in size and cost, it can be employed as the auxiliary tank 2 ′ with the heater unit box 1 being reduced in size.

Further, in the present invention, when the rectangular cylindrical heater unit box 1 is used in the vertical arrangement as shown in FIG. 1, as shown in FIGS. 8C and 8D, the air separation pressure tank 2 is used. The front side 2F is arranged on the upper side, the rear side 2B is arranged 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, and the front side 2F It is preferable to close the connection port J1 with the cap 2C.
In this case, 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 connected by an ethylene-propylene rubber (EPDM) pipe.

Accordingly, in the air separation pressure tank 2, as shown in FIG. 7D, the circulating water is at the water level of wL ₁ at normal temperature and at the water level of wL ₂ at 80 ° C., and the inflow water Fin from the connection port J3 is reduced. It becomes the effluent Fout from the connection port J2, and the flow velocity rapidly decreases in the tank 2, and the lower slat 2A in the tank 2 flows upward, the downward flow F2, and the upper slat 2A. The upward flow F3 and the downward flow F4 cause the air bubbles in the water to separate and rise to the air zone Za at the upper part of the tank closed by the cap 2C (FIG. 8C). Inside, warm water that does not contain air can be circulated.
Therefore, even if the air separation pressure tank 2 of the present invention is used in a vertical arrangement as shown in FIG. 7 (D), the functions of the sealed expansion tank and the air separator of the conventional example 1 (FIG. 11) are exhibited. The heater unit box 1 can be downsized.

Further, when the rectangular heater unit 1 is used in a horizontal arrangement, 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. It is preferable that 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.
In this case, the connection port J1 and the pipe heater 4 and the connection port J2 and the forward gap S may be connected by an ethylene-propylene rubber tube.
And since 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.

Therefore, as shown in FIG. 7 (C), the air separation pressure tank 2 has a water level of wL ₁ when the circulating water is at room temperature (15 ° C.) and a water level of wL ₂ at 80 ° C. The 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 blades 2A, and the air bubbles in the flowing water are separated and raised. The rear blade 2A is also 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 area Za at the upper part of the tank, and become the circulating effluent Fout. It is supplied to the forward pipe S from the connection port J2.

  Then, the 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. 7C, the function of the hermetic expansion tank and the air separator of the conventional example 1 (FIG. 11) is exhibited. The box 1 can be downsized.

In addition, in the rectangular heater unit 1, as shown in FIG. 9B, the auxiliary tank 2 ′ is connected from the cheese joint 7 downstream of the air separation pressure tank 2 through the branch pipe P 6 ′. Downstream of the cheese joint 7, it is preferable to connect a water-filled joint 6 projecting laterally from the straight branch section 6 </ b> C to the center branch section 6 </ b> C and the front and rear ball valves 6 </ b> A and 6 </ b> A ′.
In this case, the auxiliary tank 2 ′ is the same as the air separation pressure tank 2 and is arranged according to the space in the heater unit box 1, and the tip of the branch pipe P 6 ′ is placed at three locations of the auxiliary tank 2 ′. Of the connection ports J1, J2 and J3, the connection ports located on the lower surface may be connected and the other two connection ports may be closed with the cap 2C.

  Further, as shown in FIG. 9A, the water-filled joint has a branch portion 6C provided with an opening / closing valve Hb for opening and closing the water channel of the straight portion 6E from the center of the straight portion 6E having pipe connection portions 6D at the outer periphery of both ends. The union portion 6B protrudes on both the upstream side and the downstream side of the branch portion 6C, and conventional ball valves 6A and 6A 'may be detachably screwed to the union portion 6B. The straight portion 6E has a length L6 of 97 mm, and the branch portion 6C has a pipe shape with the same diameter as the straight portion 6E and protrudes 50 mm, and is provided with an opening / closing valve Hb that is opened and closed with a cross driver at the tip.

  Therefore, as shown in FIG. 9 (B), the heating system is filled with water by connecting the forward pipe S and the return pipe R of the heater unit box 1 to the radiator 8 and receiving the water supply connector 10D downward and receiving water upward. The conventional pressure feed pump unit 10A provided with the connector 10E is used to close the on-off valve Hb of the branch portion 6C, the ball valve 6A is connected to the water connector 10D with the pressure hose 10C, and the ball valve 6A ' Connect to the water receiving connector 10E with the transparent hose 10B, fill the water path of the heating system with the pressure flowing water W from the ball valve 6A, and check the water jetted from the ball valve 6A 'into the pressure feed pump unit 10A. Thus, water with a predetermined pressure can be filled in the hermetic circulation path and air can be removed.

In this case, since the air in the panels 81 and 82 is removed by the air vent valve 20 arranged in the upper end horizontal pipe 8A where the air in the heat radiation panels 81 and 82 is likely to stay, the water of the pressure pump unit 10A is supplied from the ball valve 6A to the system. It flows into the inside and can be filled with a predetermined amount of water.
Next, if the water supply connector 10D and the ball valve 6A of the pressure feed pump unit 10A are closed, the water pressure in the system becomes independent from the pressure for water supply, and the water pressure in the system is the difference in the head HL (standard: 1 mm). Only by closing the ball valve 6A 'and opening the on-off valve Hb of the branching portion 6C of the water-filled joint 6, the filling water in the system can be set to a predetermined pressure.

Of course, at the time of injection into the system, ascending water also enters the auxiliary tank 2 ′ from the branch pipe P 6 ′ due to tap water pressure, but assists at the stage where the ball valve 6 A is closed and the water pressure in the system is set to the pressure by the head HL. Most of the incoming water in the tank 2 'is eliminated.
Therefore, water filling and air venting can be performed simultaneously and simply, and the filling water in the system can be filled at the head pressure (standard: 0.01 MPa), and the air separation pressure tank 2 has a predetermined water level surface as shown in FIG. Below wL ₁ , an air area Za for old pressure accommodation can be secured.

  Further, the system of the present invention is preferably operated by electric control, and the electric control circuit includes an operation panel 9B for displaying operation display, timer display, time display, temperature display, etc., as shown in FIG. A microcomputer 9A that processes and outputs a signal, and a plurality of terminal boards 9C that turn on and off the electrical circuit of the circulation pump 3 and each pipe heater 4 according to an instruction from the microcomputer 9A, and a forward piping P5 of the pipe heater 4 The thermostat 9S is arranged, and the pipe heater 4 is turned on and off according to the hot water temperature and transmitted to the microcomputer 9A. The temperature sensor 9T that measures the room temperature and operates the backup battery in the event of a power failure, the power source 9M, and the power source 9M Including a fuse 9F that prevents overcurrent, a transformer 9K that converts the voltage and sends it to the microcomputer 9A, and an electric wire 9V that connects each device A.

In the heating system provided with the electric control circuit, a current is supplied from the power source 9M to the system, the operation of the operation panel 9B is touched on the panel, and the set temperature is set, so that information is sent to the microcomputer 9A. When the temperature sensor 9T senses the room temperature and there is a difference between the set temperature and the room temperature, information is sent from the microcomputer 9A to the terminal board 9C, and each pipe heater 4 is operated and stopped as appropriate. Since the heater 4 is turned on / off (on-off) in the terminal board 9C, as shown in FIG. 9B, light is transmitted from the photocoupler 9D in the terminal board 9C to the switch 9E in accordance with an instruction from the microcomputer 9A. It transmits by communication and operates from the switch 9E to turn on / off (on-off).
In this case, a plurality of pipe heaters 4 may be used in accordance with the amount of electric power, and the thermostat 9S may be disposed in the middle of the pipe P5 between the pipe heater 4 and the air separation pressure tank 2.

Therefore, in the heating system of the present invention, a plurality of pipe heaters 4 are arranged, and the plurality of pipe heaters 4 are automatically controlled and automatically activated / stopped according to the difference between the set temperature and the current room temperature. Manual operation errors can be eliminated and power can be saved.
And since the pipe heater 4 is accurately controlled at a predetermined temperature by the microcomputer 9A, the circulation of the hot water to the hot water path can be suppressed, and a safe hot water circulation system free from fear of accidents such as burns is obtained. .
Further, since the thermostat 9S can be arranged in the heater unit box 1, it functions properly without being affected by direct sunlight or other heat sources. When the thermostat 9S stops, the circulation pump 3 also stops at the same time, and the radiator Since one heater unit box corresponds to one of No. 8, no pressure adjustment is required.

  In the heating system of the present invention, since 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.

In addition, since the heater unit box 1 including the heating unit (pipe heater) 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 integrates the two heat radiation panels of the same size, that is, the first heat radiation panel 81 and the second heat radiation panel 82, into a hot water circulation configuration while maintaining a gap gp between the opposing surfaces that prevents the cold air flow intervention. Therefore, the radiator 8 is provided with a heating surface free from heating spots, and the opposing surface gap gp between the panels 81 and 82 prevents the cold air from flowing down from above and below, and only allows the heating air to rise. It provides a heating surface free from heating temperature spots and a large amount of heat radiation, and smoothly heats up the surrounding indoor air to provide a mild, natural convection heating action .

Further, since 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.

In addition, since a new air separation pressure tank 2 having the functions of an expansion tank, an air separator, a safety relief valve, and a drain valve in the conventional hot water circulation heating system (FIG. 11) has been developed and adopted, the heater unit The box 1 can be reduced in size and weight, and the radiator 8 is also a plastic radiating panel in which a large number of vertical pipes 8B are connected between the upper and lower large-diameter horizontal pipes 8A, so that mild radiant heating is demonstrated. In addition, it provides a human-friendly heating system that is safe for the elderly and children without fear of burns.
Moreover, since each of the heat dissipating panels 81 and 82 connects the vertical pipe 8B group in an orthogonal form between the upper and lower horizontal pipes 8A, the water filling into the closed circulation path in which there are many communicating orthogonal portions of the pipes 8A and 8B. In the work, air is likely to remain in the circulation path, but air is most likely to remain when the water is filled, and the air vent valve 20 is disposed in the upper side pipe 8A of each of the heat dissipating panels 81 and 82, so that the air enters the circulation path of the hot water heater. In the water filling operation, the completion of the operation can be confirmed in a state where the injected filling water into the circulation path flows out of the air vent hole H8 and the air vent valve 20, and a heating system that is easy to handle is provided .
Therefore, the heating system of the present invention can be applied not only to a new building but also to a heating system modification of an existing building.

It is a perspective view in the state where a heater unit box is juxtaposed with a radiator. It is explanatory drawing of a heat radiator, Comprising: (A) is a vertical side view, (B) is a partially notched vertical front view, (C) is a cross-sectional view for explaining the arrangement state of the vertical pipe 8B. It is explanatory drawing of a heat radiator, Comprising: (A) is a front view of the 1st heat radiating panel 81, (B) is a left view, (C) is a right view, (D) is a front view of the 2nd heat radiating panel 82. It is. It is explanatory drawing of the air vent valve 20, Comprising: (A) is a longitudinal front view of the state with which the horizontal pipe 8A end was mounted | worn, (B) is an exploded perspective view. 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. It is explanatory drawing of a heater unit box, Comprising: (A) is the assembly state perspective view of a housing, (B) is the BB sectional drawing of (A), (C) is the C section enlarged view of (A), (D) is the D section enlarged view of (B), (E) is the E section enlarged view of (B). It is explanatory drawing of the air separation pressure tank 2, Comprising: (A) is a whole perspective view, (B) is the arrow B view front view of (A), (C) is the CC sectional view taken on the line CC of (A). (D) is a vertical use state diagram. It is explanatory drawing of a vertical heater unit box, (A) is a water system | strain diagram, (B) is an internal top view, (C) is an internal front view, (D) is an internal side view. (A) is explanatory drawing of the water filling joint 6, (B) is the water system figure of a water filling effect | action. It is an electric circuit explanatory drawing of this invention, Comprising: (A) is an electric system system explanatory drawing, (B) is the B section enlarged explanatory drawing of (A). It is explanatory drawing of the prior art example 1, Comprising: (A) is a system system | strain diagram, (B) is a front view of the heat radiator to be used, (C) is a side view of a heat radiator. It is a longitudinal cross-sectional view of the electric water heater of the prior art example 2.

[Heater unit box housing (Figs. 5 and 6)]
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.
FIGS. 5A and 5B are exploded perspective views of the housing 1, wherein FIG. 5A shows the left side plate 1L, FIG. 5B shows the right side plate 1R, FIG. 5C shows the upper lid 1U, and FIG. 5D shows the lower lid 1D. 6 (A) is a perspective view assembled to a housing, and FIG. 6 (B) is a cross-sectional view taken along line BB in FIG. 6 (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. In the assembled form of FIG. 6 (A), 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.
As shown in FIG. 5 (A), the left side plate 1L is a plate material having an L-shaped cross section and fixedly storing various devices on the inner surface, and has a height h11 of 550 mm and a width L1 (180 mm) of the housing. On the side LS1 side, 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. In this case, 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.

Then, as shown in FIG. 5A, 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. 6 (D), the anchor piece 1C having an L-shaped section extends 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.
In addition, the one side LS1 in which the wire insertion hole H1 is arranged has small reinforcing ribs 1G extending in the vertical direction at appropriate locations (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. As described above, 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. 5 (B) and 6 (D), 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 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. At the opposite portion of the right side plate 1R, from the position of the length W10 (standard: 85 mm) from the bent portion EP, A deformed pentagonal plate having an inclined side TS having a length L10 (standard: 86 mm) facing the inclined side 1R 'and having one side of the rectangle as the inclined side TS, each side downward from the top plate 1T A rising piece 1P having a height of h10 (20 mm) and having a right-angled bending shape is integrally provided.

In other words, 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. In addition to the portion, 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.

  That is, 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.

[Air separation pressure tank 2 (Fig. 7)]
7A is an overall perspective view of the air separation pressure tank 2, FIG. 7B is a front view as viewed from the arrow B in FIG. 7A, and FIG. 7C is C− in FIG. FIG. 7D is a longitudinal sectional view illustrating the air separation pressure tank 2.
The air separation pressure tank 2 is arranged in the warm 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. 11). 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 1.5 mm. The structure is as shown in FIG. 7C. 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.

In each connection port J1, J2, J3, two projections 2G having a width of 1 mm and a projection height of 0.5 mm are arranged at intervals of 6 mm in order to ensure attachment of the rubber pipe 5A or the rubber cap 2C. .
Further, as shown in FIG. 7C, in the tank 2, 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. ) Is arranged at 20 mm, and 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 0.5L.

Accordingly, when the air separation pressure tank 2 is used sideways, as shown in FIG. 7C, the water level wL ₁ in the normal temperature (15 ° C.) water state, the water capacity 0.28 L (liter), the air amount (space volume) ) At 0.22 L, 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 having a flow velocity of 0.118 m / s below the front blade plate 2A. The upper flow F1 has a lower flow rate than the lower flow F2, the water and air are separated, and the air reaches the upper air zone Za.

Further, 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'. However, the water in the water is completely separated by agitating the flow into the low-speed flow of F1, F2, F3, and F3.
The water level of the circulating water expanded at a high temperature (80 ° C.) reaches wL ₂ , and the upper side connection port J3 is closed with the rubber cap 2C, so that the air region Za becomes pressure air under the allowable pressure. .

When the tank 2 is used vertically, as shown in FIG. 7D, the tank 2 is arranged with the front side 2F facing upward, and the inflow water Fin flows in from the connection port J3 of the upper side 2T, and the connection port J2 of the rear side 2B. The water level 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 has a water capacity of 0.19 L and a space volume (air volume) of 0.31 L, and is heated. When the heating temperature reaches 80 ° C., the water level reaches wL ₂ .
Then, 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).

[Circulating pump 3 (FIG. 8)]
The circulation pump 3 may be a conventional pump that can be disposed on the lower lid 1D of the heater unit box 1, and employs a conventional resin electromagnetic pump.
The resin electromagnetic pump is inexpensive, lightweight, has good transport and installation workability, and has a quiet noise of 38 db or less, manufactured by Three Phase Electric Co., Ltd., product number PMD-141B (for single phase 100V), or Product number PMD-142BSG (for single phase 200V) may be employed.

[Pipe heater 4 (Fig. 8)]
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.

[Pipe 5A (Fig. 9)]
The pipe 5A for piping 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, and has a conventional thickness. An ethylene-propylene rubber (EPDM) rubber pipe with a diameter of 3 mm and an inner diameter of 14 mm is employed.

[Water-filled joint 6 (Fig. 9)]
FIG. 9 (A) is an explanatory view of the water-filled joint 6 and is a new joint fitting developed for the present invention.
The water-filled joint 6 is a T-shaped gunmetal pipe member as shown in FIG. 9A, and the straight portion 6E has a length L6 of 97 mm, an outer diameter R6 of 13.5 mm, and outer circumferences at both ends. A 12 mm long connecting portion 6D for connecting the rubber pipe 5A, a pipe provided with an opening / closing valve Hb that opens and closes the water channel of the straight portion 6E, having an outer diameter of 13.5 mm and a length W6 of 50 mm from the center of the straight portion 6E. The shape branch part 6C protrudes, and on the left and right sides of the branch part 6C, at a position of 23 mm, a horizontal side Ps with a width of 9 mm for fixing a gripping jig (pipe wrench) is provided on the opposite side, and for screw insertion The union part 6B provided with the hole H6 is protruded 19 mm from the straight part 6E in the same direction as the branch part 6C.

Then, a rotation surface (not shown) having a cross groove for opening / closing the opening / closing valve Hb is arranged at the tip of the branch portion 6C, and if the rotation surface is rotated by a cross driver, the cross section is triangular. The shaped valve body (open / close valve Hb) moves back and forth to open and close the water channel of the straight portion 6E.
Accordingly, in the water filling operation, as shown in FIG. 9B, ball valves 6A and 6A each having a screw insertion hole Hc commonly used in the screw insertion hole H6 of the union portion 6B and a hose connection screw insertion hole Hc at the tip. ′ Are screwed and connected, the branch portion 6C is closed, and the ball valve 6A is communicated with the water supply connector 10D of the water filling pressure pump unit 10A through the screw insertion hole Hc via the pressure hose 10C. The valve 6A ′ is communicated with the water receiving connector 10E of the pumping pump unit 10A filled with water with the transparent hose 10B through the screw insertion hole Hc, and the circulation path is filled with water. The air remaining in the upper end horizontal pipe 8A is discharged by operating the air vent valve 20 by the driver 10F, and after filling with water under a predetermined pressure, the valve body of the branch portion 6C is opened, and the ball valves 6A and 6A ′ are closed. If so, it can be implemented.

[Ball valves 6A, 6A '(FIG. 9)]
The ball valves 6A and 6A ′ are water path opening / closing valves arranged in the heater unit box 1, and are provided with an opening / closing hole Ha having a diameter of 3 mm in the cylindrical portion, and a hexagonal wrench is inserted into the hole Ha. A Zalho ball valve from Valofick (Denmark), which opens and closes and has a pipe shape of 29.5 mm in length and has a threaded part with a diameter of 12 mm at one end.

[Cheese joint 7 (FIG. 8)]
The cheese joint 7 is used for branch connection of the water path in the heater unit box 1 and is a T-shaped joint metal fitting that can connect pipes from three sides, having a diameter of 26 mm and a length of 46 mm. A conventional T-type cheese joint 7 having a joint projecting 9 mm perpendicularly from the longitudinal center of the cylindrical portion is employed.

[Heatsink (Figures 2 and 3)]
The radiator 8 is a radiator panel in which a large number of pipes for circulating heated hot water are integrated into a planar shape. FIG. 2A shows a framework in which the first radiator panel 81 and the second radiator panel 82 are integrated. 2B is a partially cutaway front view of the radiator, and FIG. 2C is an explanatory view of the arrangement state of the vertical pipe 8B.
FIG. 3 is an explanatory view of the function of the radiator in which the first heat radiating panel 81 and the second heat radiating panel 82 are integrated. FIG. 3A is a front view of the first heat radiating panel 81, and FIG. (C) is a right side view of a radiator, (D) is a front view of the 2nd heat radiating panel 82. FIG.

As shown in FIGS. 2 and 3, both the first heat radiating panel 81 and the second heat radiating panel 82 are formed by arranging a group of thin vertical pipes 8B having the same length in parallel and vertically between large diameter horizontal pipes 8A at the upper and lower ends. As shown in FIG. 2C, the first heat radiating panel 81 and the second heat radiating panel 82 have a configuration in which the vertical pipes 8B are displaced from each other, that is, when the heat radiator 8 is viewed from the front. In this case, each vertical pipe 8B group of the rear second heat radiation panel 82 is integrated between each vertical pipe 8B group of the front heat radiation panel 81.
The horizontal pipe 8A arranged at the upper and lower ends of the radiator 8 has an outer diameter of 27 mm and a wall thickness of 5 mm, and the vertical pipe 8B has an outer diameter of 13 mm and a wall thickness of 1.6 mm. Both the horizontal pipe 8A and the vertical pipe 8B are The pipes 8A and 8B are both polypropylene, random, and copolymer resin (PP-R resin), and the surfaces of the pipes 8A and 8B are 0 in order to avoid deterioration in weather resistance due to pigment mixing and to give a design effect to the exposed heat radiation surface. Two layers were formed so as to form a coating film layer containing a pigment with a thickness of 4 mm.

The lengths of the vertical pipe 8B and the horizontal pipe 8A are appropriately selected and determined according to the capability of the radiator, but in the radiator 8 employed in the 3 kW electric hot water circulation heating system, the length of the horizontal pipe 8A is determined. The length L8 ′ is 1730 mm, the length h8 ′ of the vertical pipe 8B is 450 mm, and each vertical pipe 8B group is fused and joined to the upper and lower horizontal pipes 8A with each pipe interval gB being 7 mm.
Then, as shown in FIG. 3, the first heat radiating panel 81 and the second heat radiating panel 82 are integrated with each other so that the opposing surface gap gp of the panel surface is 18.5 mm, and the horizontal pipes 8A are connected to the right and left ends. The upper and lower ends and the lower left end were integrated with the spacer pipe 8D, and the communication form was integrated with the communication pipe 8C only on the upper side of the left end.

  Then, both end portions of each horizontal pipe 8A are closed by a closing plate 8F. A hot water supply port 8S is provided at the other end (right end) of the lower end horizontal pipe 8A of the first heat radiating panel 81 and a lower end side of the second heat radiating panel 82. The other end (right end) of the pipe 8A is provided with a hot water discharge port 8R, and the second heat radiating panel 82 is closed at one end (left end) of the upper end horizontal pipe 8A and the other end (right end) of the lower end horizontal pipe 8A. A closing plate 8F that closes one of the vertical pipes 8B is disposed inside the plate 8F.

  Accordingly, in the radiator 8, as shown in FIG. 3, the flowing water f1 from the hot water supply port 8S at the lower end of the first heat radiating panel 81 is the flowing water f2 in the lower end horizontal pipe 8A → the rising flowing water f3 in the upper end horizontal pipe 8A → the upper end. Flowing water f4 in the horizontal pipe 8A → flowing water f5 in the communication pipe 8C → flowing water f6 in the vertical pipe 8B at one end (left end) of the second heat radiating panel 82 → flowing water f7 in the lower end horizontal pipe 8A → upper end from the lower end horizontal pipe 8A. The first heat radiating panel 81 is a path of flowing water f8 to the horizontal pipe 8A → flowing water f9 in the upper end horizontal pipe 8A → flowing water f10 in the vertical pipe 8B at the other end (right end) → outflowed water f11 from the hot water discharge port 8R. The hot water can be circulated from the hot water supply port 8 </ b> S at the lower right end of the second heat discharge panel to the hot water discharge port 8 </ b> R at the lower right end of the second heat radiating panel 82.

[Air vent valve 20 (FIG. 4)]
In addition, at one end (left end) of the upper end horizontal pipe 8A of the first heat radiating panel 81 and the second heat radiating panel 82, a novel air vent that ascends in the hot water path and discharges air staying in the upper part of the inner surface of the upper end horizontal pipe 8A. Valve 20 was placed.
4A is a sectional view for explaining the arrangement state of the air vent valve 20, and FIG. 4B is an exploded perspective view.
The air vent valve 20 includes a closing plate 8F having an air vent hole H8 having a diameter of 7 mm for closing the end of the horizontal pipe 8A, a stainless steel rectangular washer 20E having a screw hole He at the center, and a cut on the outer peripheral surface. A spring washer 20S (JISB1251) with an outer diameter of 12.8 mm provided with a screw insertion hole Hi at the center, and a small diameter (13 mm) protrusion 20C attached to a base 20B with a large diameter (27 mm). A cap 20A having a screw insertion hole Hf having a diameter of 7 mm, a conventional water packing 20D having a diameter of 13 mm, and a stainless steel screw 20N having a diameter of 5 mm having a cross-shaped groove for driver operation on the head. .

  And, as shown in FIG. 4 (A), the air release valve 20 is attached to the upper end horizontal pipe 8A by a closing plate 8F having an air releasing hole H8 in the upper portion to close the end of the horizontal pipe 8A. The large diameter base portion 20B of the cap 20A is fixed to the outside of the cap 20A in such a manner that the air vent hole H8 communicates with the inside of the cap 20A, the screw 20N from the outer surface of the cap 20A, the washer 20E inside the cap 20A, and the protruding portion 20C. Is screwed into the cap 20A via the water packing 20D.

Therefore, when water is filled into the circulation system, the top air in the system, that is, the accumulated air in the system gathered above the upper side horizontal pipe 8A of the heat radiating panels 81 and 82 is as shown in FIG. If the screw 20N is rotated and relaxed by a cross driver from the outside through the driver insertion hole H16 of the upper connector 16, and a gap is formed between the washer 20E and the cap inner surface by the spring washer 20S, an air vent hole is obtained. H8 → Gap between the inner surface of cap 20A and spring washer 20S, washer 20E → Gap between screw insertion hole Hf of cap 20A and screw 20N → Gap between water packing 20D and screw 20N head It is possible to release stagnant air from the panels 81 and 82 to the outside of the system.
In this case, water also flows out from the air vent hole H8 of the closing plate 8F, but the water in the cap 20A does not rise from the level of the screw insertion hole Hf, and the air in the cap 20A is screwed. Even if water is discharged from the upper portion of the insertion hole Hf and remains below the screw insertion hole Hf in the cap 20A, there is no problem.

[Incorporation of equipment into the heater unit box (Figs. 8 and 9)]
For example, in the case of the vertical heater unit box 1 shown in FIG. 8, the left side plate 1L and the lower lid 1D are connected to the left side plate. The lower end of 1L and the rising piece 1P of the lower lid 1D collide with each other up and down, and the abutment locking piece 1V and the lower end of the left side plate 1L are screwed through the screw holes H2, and the bottom plate 1B of the lower lid 1D is fixed to the bottom plate 1B. A flat steel plate 11 having a thickness of 3 mm and a width of 50 mm is placed and laid. The stand 3S of the circulation pump 3 is bolted to the stand 11 and the circulation pump 3 is arranged.

  Then, on the inner surface of the left side plate 1L provided with the reinforcing ribs 1G, a conventional hat-shaped steel (not shown) obtained by bending a steel plate having a thickness of 1.6 mm is fixed at an appropriate length and an appropriate height, A steel support (not shown) is taken out from the hat-shaped steel, and the air separation pressure tank 2, the auxiliary tank 2 ', and the three rows of pipe heaters 4 are supported and fixed, and circulated using the rubber pipe 5A and the hose band 5B. The rotary joint 3F of the pump 3 and the pipe heater 4 are connected, and the pipe heaters 4 are also connected. As shown in FIG. 8A, in the heater unit box 1, the circulation pump 3 → the pipe is connected from the return pipe R. An inflow path of the heater 4 → the air separation pressure tank 2 → the auxiliary tank 2 ′ → the forward pipe S is formed.

The air separation pressure tank 2 and the auxiliary tank 2 ′ are both the same tank, and as shown in FIGS. 8 (C) and (D), the upper side 2T is fixed to the vertical type as the side surface, and the main tank ( The connection port J3 to the upper side 2T located on the side surface of the air separation pressure tank 2 is connected to the pipe heater 4, the connection port J2 of the rear side 2B is connected to the cheese joint 7, and the connection port J1 of the front side 2F is Close with cap 2C.
In this case, as shown in FIG. 9B, a T-shaped cheese joint 7 is connected to the pipe piping P6 below the air separation pressure tank (main tank) 2, and a ball valve is located under the cheese joint 7. A new water-filled joint 6 provided with 6A and 6A ′ is arranged, and the water-filled joint 6 is connected to the radiator 8 by a pipe P7.

Further, the branch pipe P6 ′ extends horizontally from the cheese joint 7, 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 ′.
That is, the auxiliary tank 2 ′ connects the lower side connection port J <b> 1 of the front side 2 </ b> F and the cheese joint 7 via the branch pipe P <b> 6 ′, and connects the upper side of the connection port J <b> 2 of the rear side 2 </ b> B and the side surface. The connecting port J3 on the upper side 2T is closed with the cap 2C, and the auxiliary tank 2 'is disposed in the circulation system path from the air separation pressure tank 2 to the radiator 8, and is increased by water molecule activity when the water temperature rises. Absorb the pressure in the system.

Next, the operation panel 9B is disposed in the step d9 on the upper surface of the upper lid 1U, the base 9N is disposed in alignment with the operation panel 9B, and the circulation pump 3 and the pipe heater are utilized from the base 9N using the gaps of the devices. 4. Wire the electric wire 9V to the thermostat 9S or the like previously arranged in the pipe P5 route.
And the temperature sensor 9T provided with the electric wire 9V of the appropriate length to the power supply 9M and the electric wire 9V arrange | positioned out of the heater unit box 1 is arrange | positioned in the appropriate position in the heater unit box 1, respectively.
And 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.

  Of course, before shipment, the ends of the forward pipe S and the return pipe R are connected with connecting fittings in the factory, the ball valve 6A 'is closed, the branch pipe 6C is opened, and water flows in from the ball valve 6A. The power supply 9M is energized, the circulation pump 3 and the pipe heater 4 are operated, the ball valve 6A is drained, the system is vented, the hot water temperature is raised, the air separation pressure tank 2, the auxiliary tank 2 ' The product is shipped after checking for water leakage and abnormal pears.

[Framework F (Figures 1 and 2)]
FIG. 1 is a perspective view of a state in which a frame is added to the radiator 1 and connected to the heater unit box 1.
The frame F includes an upper joint 16 and a lower frame, each of which is an upper frame 13, a lower frame 14, both side frames 15, and an air vent valve operating hole H 16 that connects the upper frame 13 and the side frame 15. 14 and the lower joint 17 that connects the side frame 15 covers and integrates the four sides of the heat dissipating panels 81 and 82, and the vertical and horizontal pipes 8A and 8B of the heat dissipating panels 81 and 82 are integrated. Conceal the joint with the group to give the radiator a design effect and protect the four sides of the radiator. Each frame F takes into account the colors of the pipes 8A and 8B of the radiator panels 81 and 82. Then, it is colored with a stock solution dyeing or two-layer molding means.

As shown in FIGS. 2 (A) and 2 (B), the frame F is assembled to the radiator 8 by using a lower side contact piece Pd and an upper contact piece Pu of the upper frame 13. 8 is sandwiched and held from above and below, and the lower frame 14 simply conceals both sides and the lower side of the lower end horizontal pipe 8A portion of the heat dissipating panels 81 and 82, and is integrated with the side frame 15.
Therefore, if the frame F is added to the heat radiating panels 81 and 82, the radiator 8 as an integrated body of the first heat radiating panel 81 and the second heat radiating panel 82 has the support function of the upper frame 13 and the lower frame 14. Since the upper frame 13 supports the upper end horizontal pipe 8A of the radiator 8 and holds the radiator 8 in a suspended state, the vertical pipe 8B is used during the service life. Even if the group expands due to thermal expansion, the extension strain of the radiator 8 can be absorbed.

  In the electric hot water circulation heating system obtained in the above embodiment, the system is filled with a predetermined water pressure by using the air vent valve 20 in a state where no stagnant air exists in the system and is filled with water. The operation of the joint 6 can be carried out easily, the heating system can be operated automatically by the electric circuit 9, and there is no malfunction caused by a user's operation mistake. It is safe, secure and advantageous in terms of power saving. Provide heating for each room.

Moreover, since the heat radiator 8 is composed of the plastic pipes 8A and 8B and is exposed, there is no fear of burns, radiant heat and mild heating due to natural stagnation are exhibited, and it is safe for the elderly and children. Provide safe, human-friendly heating.
And since the heat radiator 8 is in the state where the vertical pipe 8B group of each front side panel 81 and each rear panel 82 shifted | deviated to right and left, the radiation | emission efficiency of a radiant heat is good, and two heat radiator panels 81 and 82 are 2 sheets. Since the heat radiation panels 81 and 82 maintain the gap gp that does not cause the cold air descending intervention from above, the heating rising airflow in a rectifying form is provided, and comfortable natural convection heating is provided.
Moreover, since each of the heat radiating panels 81 and 82 is a plastic pipe with the pipes 8A and 8B being a two-layer colored pipe, the heat radiating device 8 can be freely color-matched to meet the demands of the customer. , It is also advantageous for improving the interior design of consumers.

[Others]
When the heater unit box 1 is arranged in the horizontally long direction such as the lower surface of the radiator 8, the heater unit box 1 is composed of the same equipment as the embodiment (FIGS. 5 and 6), The air separation pressure tank 2 and the auxiliary 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.
Then, 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.

In this case, the air separation pressure tank 2 is used in the form shown in FIG. 7C, and heated water flowing through the pipe heater 4 flows into the connection port J1 on the front side 2F, and the connection port on the rear side 2B. What is necessary is just to connect auxiliary tank 2 'to the connection port J3 of the upper side 2T which flows out from J2.
Therefore, even if the square-shaped heater unit box 1 is placed in the horizontal direction, 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. Generation | occurrence | production generate | occur | produces the effect | action of an air separation effect | action and the air accommodation to the upper air area | region Za of a separation bubble, The heater unit box 1 has the same effect as vertical arrangement | positioning, and can achieve the intended objective of invention.

  In the embodiment, the air separation pressure tank 2 is additionally provided with an auxiliary tank 2 ′ having the same structure. However, the auxiliary tank 2 ′ simply expands the air region Za of the air separation pressure tank 2, The air separation pressure tank 2 of the example size is designed to withstand a 3 kW heating system by using one from the amount of water used and the air pressure increase surface of the air zone Za due to the heat expansion of the water. Thus, the auxiliary tank 2 'can be omitted.

1 Heater unit box (frame, box)
1A Corner side 1B Bottom plate 1C Anchor piece 1D Lower lid 1F Contact anchor piece 1G Reinforcement rib 1K Square tube part 1L Left side plate 1P Rising piece 1R Right side plate 1R ', TS Inclined side 1T Top plate 1U Top lid 1V Contact locking piece ( Fastening piece)
2 Air separation pressure tank (pressure tank, main tank, tank)
2 'Auxiliary tank 2A Front slat (lower slat, slat)
2A 'Rear blade (upper blade, blade)
2B Rear side 2C Cap 2D Lower side 2F Front side 2G Projection 2L Left side (side)
2R Right side (side)
2T Upper side 3 Circulation pump 3F Rotary joint 3J Joint 3S Stand 4 Pipe heater 5A Rubber pipe (pipe)
5B Hose band 6 Water-filled joint 6A, 6A 'Ball valve 6B Union part 6C Branch part 6D Connection part 6E Straight part 7 Cheese joint 8 Radiator 8A Horizontal pipe 8B Vertical pipe 8C Communication pipe 8D Spacer pipe 8E, 8F Closing plate 8R Hot water drain Outlet 8S Hot water supply port 9A Microcomputer 9B Operation panel 9C Terminal board 9D Photocoupler 9E Switch 9F Fuse 9K Transformer 9M Power supply 9N Base 9S Thermostat 9T Temperature sensor 9V Wiring (electric wire)
10A Pressure feed pump unit (pressure feed pump)
10B Transparent hose 10C Pressure hose 10D Water supply connector 10E Water receiving connector 10F Driver 11 Mounting base 13 Upper frame 14 Lower frame 15 Side frame 16 Upper connector 17 Lower connector 20 Air vent valve 20A Cap 20D Water supply packing 20E Washer 20S Spring washer 20N Screw 20T Makeup cap 81 First heat dissipation panel (panel)
82 Second heat dissipation panel (panel)
Dr operation display gp Opposite surface spacing (interval)
F Frame FS Floor H1 Wire insertion hole H2 Screw hole H3 Air circulation hole H8 Air vent hole J1, J2, J3 Connection port P6 'Branch pipe R Return pipe (return pipe)
S Outward pipe (supply pipe)
w Water flow wL ₁ , wL ₂ Water level wall surface WS

Claims (9)

An electric heating type hot water circulation type heating system in which one radiator (8) and one square tubular heater unit box (1) are arranged correspondingly, and the radiator (8) Two same-sized plastic heat dissipating panel (81) and second heat dissipating panel (82) made of plastic in which a large number of small diameter vertical pipes (8B) are arranged in communication between large diameter horizontal pipes (8A) . The heat dissipating panel is integrated into a hot water circulation form while maintaining a gap between opposing faces (gp) that prevents cold air flow intervention, and an air vent hole (H8) is formed in the closing plate (8F) at one end of each upper end horizontal pipe (8A). ) Is a hot water circulation type radiator having a hot water supply port (8S) and a hot water discharge port (8R) on a heat radiating panel (81, 82) provided with an air vent valve (20) communicating with the heater unit box (1 ) Air separation pressure tank (2), circulation pump (3) The pipe heater (4) is connected via a water-filled joint (6) and a cheese joint (7) to accommodate the hot water circulation function, and the radiator (8) and the return pipe (R) are connected to the radiator (8). Connected, electric hot water circulation heating system. An upper frame (13) having an air hole (Hu) on the upper surface for supporting the upper end horizontal pipe (8A) in a concealed form on the radiator (8), and a lower frame (14) for concealing the lower end horizontal pipe (8A) A side frame (15) that plays the left and right support functions, an upper joint (16) that connects the upper frame (13) and the side frame (15)), a lower frame (14), and a side frame (15) The electric hot water circulation heating system according to claim 1, wherein a framework (F) is added to the lower connector (17) for connecting the two. The heater unit box (1) has an L-shaped cross section, a long square tube portion (1K) in which a long left plate (1L) and a right plate (1R) are joined, and both ends of the square tube portion (1K). In addition, an upper lid (1U) and a lower lid (1D) that are detachably fitted to each other, and a left side plate (1L) having an L-shaped cross section has a plurality of upper and lower sides at equal intervals on one side (LS1). The wire insertion hole (H1) is 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). Or the electric hot water circulation heating system of 2 or 2 . In the heater unit box (1), the left side plate (1L) having an L-shaped cross section extends and bends the corner side (1A) at both ends, and the end of the corner side (1A) is an L-shaped anchor piece (1C). ) And an anchor piece (1C) for connection to the left side plate (1L) and a contact anchor piece (1F) for connection are arranged at both ends of the right side plate (1R) having the L shape cross section. (1L) and right side plate (1R) screw holes (H2) are arranged at appropriate positions on the upper and lower ends, upper lid (1U) and lower lid (1D) screw holes (H2), left side plate (1L) and right side plate The electric hot water circulation heating system according to claim 3 , wherein the screw hole (H2) of (1R) is screwed together. The air separation pressure tank (2) includes a lower side (2D), a front side (2F), a rear side (2B), an upper side (2T), and both side sides (2L, 2R), and the upper side (2T) is a front inclined side (Sf) is a box shape that is continuous with the front side (2F) and the rear side inclined side (Sb) with the rear side (2B), and the connection port (J1) is provided at the upper and lower central portions of the front side (2F). The rear side (2B) is provided with a connection port (J2) in the upper and lower central part, and the rear side of the upper side (2T) is provided with a connection port (J3). The two blades (2A, 2A '), the front blade (2A) is at the lower position corresponding to the rear side of the front port (J1), and the rear blade (2A') is The electric hot water circulation heating system according to any one of claims 1 to 4 , wherein the electric hot water circulation heating system is disposed at a position corresponding to the lower side of the upper side connection port (J3). When the rectangular heater unit (1) is used in a vertical arrangement, the front side (2F) of the air separation pressure tank (2) is arranged on the upper side and the rear side (2B) is arranged on the lower side. The pipe heater (4) is connected to the connection port (J3) of (2T), the forward pipe (S) is connected to the connection port (J2) of the rear side (2B), and the connection port (J1 of the front side (2F)) ) and is closed with a cap (2C), electric hot water circulation heating system according to claim 5. When the square cylindrical heater unit box (1) is used in a horizontal arrangement, the upper side (2T) of the air separation pressure tank (2) is arranged on the upper side, the lower side (2D) is arranged on the lower side, and the front side ( 2F), the pipe heater (4) is connected to the connection port (J1), the forward pipe (S) is connected to the connection port (J2) of the rear side (2B), and the upper side connection port (J3) is connected to the cap (2C). The electric hot water circulation heating system according to claim 5 , which is closed at the same time. In the square cylindrical heater unit box (1), an auxiliary tank (2 ') is connected via a branch pipe (P6') from a cheese joint (7) downstream of the air separation pressure tank (2), and cheese is used. Connected to the downstream of the joint (7) is a water-filled joint (6) projecting laterally from the straight branch (6E) to the central branch (6C) and the front and rear ball valves (6A, 6A '). The electric hot water circulation heating system according to any one of claims 1 to 7 . An operation panel (9B) for displaying an operation display (Dr), a timer display (Tm), a time display (Hr), a temperature display (Te), etc., and a microcomputer (9A) for processing and outputting an input signal from the outside In response to an instruction from the microcomputer (9A), a plurality of terminal boards (9C) for turning on and off the electric circuit of the circulation pump (3) and each pipe heater (4), and the forward piping (P5) of the pipe heater (4) ), A thermostat (9S) that turns the pipe heater (4) on and off according to the hot water temperature and transmits it to the microcomputer (9A), and a temperature sensor (9T) that measures the room temperature and activates the backup battery during a power failure ), A power source (9M), a fuse (9F) that prevents overcurrent from the power source (9M), a transformer (9K) that converts the voltage and sends it to the microcomputer (9A), and an electric wire that connects each device (9 ) And with a control electric circuit including an electric hot water circulation heating system according to any one of claims 1 to 8.

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