JP4454038B2 - 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. 7 and a conventional example 2 shown in FIG.
Conventional example 1 (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.

  That is, in Conventional Example 1 (FIG. 7), 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, water filling and air venting in the system of Conventional Example 1 (FIG. 7) is a method in which the heating pipe is preliminarily raised at a 1/100 gradient from the hot water boiler, and the air is vented at the end of the pipe to supply water to the hot water boiler. Open the valve, operate the circulation pump, and carry out for each piping and each radiator branched by the header. Each radiator is one of the water stop valves arranged on the lower side. Connect the forward side of the water pump with a water tank, connect the return hose to the other water stop valve, operate the water pump to circulate the water in the radiator several times, and attach it to the radiator. The air inside the radiator is filled by discharging air from the air vent.

Conventional example 2 (FIG. 8) is cited as Patent Document 1, and as shown in FIG. 8, 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.
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 Japanese Utility Model Publication No. 6-18813

  The hot water circulation heating system of Conventional Example 1 (FIG. 7) 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 a pipe connecting each device and valves Since it is composed of pipes and is connected to the indoor radiator from the boiler room provided in the building by piping under the floor, walls, and 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). The radiator is equipped with an internal air vent, a maintenance water supply / drainage gate valve, etc., and the thermostat protrudes, which impairs aesthetics.

Also, recently, the floor height has been lowered due to construction cost problems, and it is difficult to give the specified gradient to the heating pipe due to the difference in the ceiling height of each room and the intersection with beams, water supply / drainage pipes and ventilation pipes. Since a reverse gradient or a step is generated, it is necessary to dispose an air vent valve at an appropriate position, and the piping operation is divided by the air vent valve, which causes problems in workability and cost.
In addition, water filling and air venting into the system is carried out in the direction away from the hot water boiler for each system pipe and radiator that branches off by the header by opening the water supply valve to the hot water boiler. Because there are parts where air does not escape, it is difficult to vent the air, and every radiator must be vented and filled with water, and if replacement of air in the system with water is not performed correctly The circulation of water in the system is stopped by the air in the pipe, and it is necessary to carry out again. Depending on the piping method of the heating pipe, there is a problem that the air must be vented every 3 to 5 years.

In the electric heater of Conventional Example 2 (FIG. 8), 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 power on / off operation by the thermostat becomes prominent, and the heat generation effect with respect to 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, 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 hot water circulation type radiator with hot water supply port 8S and hot water outlet 8R, heater unit box 1, air separation pressure tank 2, a circulating pump 3, a pipe heater 4 connected piping, The cheese 7A having the ball valve 6C, the ball valve 6B, and the cheese 7 having the ball valve 6A are arranged in series in the piping path, and the pressure auxiliary tank 2 is attached to the tip of the branch pipe P6 ′ extending from the cheese 7A. connect the 'to retract and the hot water circulation function, 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. 7), and the capacity is the room temperature of the water refluxed in the heating system. What is necessary is just to determine based on the amount of time, the amount 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.

And since auxiliary tank 2 'was employ | adopted, the pressure in a system is absorbed also at the time of the increase in heating capability (for example, 1 kW-> 3 kW), and a safe system is provided.
Moreover, 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. What is necessary is just to employ | adopt the product made from the conventional ethylene-propylene rubber 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. 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. 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.
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 JP-A-2001-116475. Can be adopted.

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.
In addition, since 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.

  In the heating system of the present invention, since the heater 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. There is no heat loss due to heat dissipation from the piping in the path, and even if heat dissipation occurs from the inside and outside pipes of the heater unit box 1, heat is dissipated into the room, and heat loss of the heating heat substantially occurs. Absent.

Moreover, since 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 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. 7), 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 system of the present invention, for example, as shown in FIG. 3, in the piping path of the heater unit box 1, a cheese 7A having a ball valve 6C, a ball valve 6B, and a cheese 7 having a ball valve 6A are provided. together arranged in series, extending branch pipes P6' from cheese 7A, it is set to be essential points connect the pressure auxiliary tank 2 'to the tip of the branch pipe P6'.
In this case, 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.

Accordingly, when water is filled into the system, 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) as shown in FIG. ) And 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 bucket (i) water, and in the middle from the ball valve 6C to the bucket (b) By applying the lifting head (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). .
In this case, while visually checking the running water w in the transparent hose (d), 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 set to a lift pressure of (e) (standard: 1 m), and 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.

Of course, at the time of injecting tap water into the system, the rising water also enters the auxiliary tank 2 ′ from the branch pipe P 6 ′ due to tap water pressure, but the ball valve 6 A is closed and the pressure in the system is raised by the lift (e) When the pressure is reached, most of the inflow water in the auxiliary tank 2 'is eliminated.
Therefore, water filling and air venting can be carried out 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. 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.

  Further, in the present invention, 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, 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 9B is disposed on the upper lid 1U. When the heater unit box 1 is used as a horizontal type, 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.

  Accordingly, by removing the upper lid 1U and the lower lid 1D, 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.

In addition, 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.
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.

  In addition, as shown in FIG. 4, 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. It is preferable that 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. 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.

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, 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. ′ Is arranged at the rear corresponding position of the front side connection port J1 in the lower side, and the rear blade 2A ′ is arranged at the lower corresponding position of the upper side connection port J3 in the upper 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 0.6 mm. With regard to 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 at 80 ° C., and the pressure in the system is 0. .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.

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. 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.
In addition, since 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 '.

Further, in the present invention, when the rectangular heater unit box 1 is used in a vertical arrangement as shown in FIG. 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. Preferably, 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 connection port J1 on the front side 2F is closed 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. 6D, 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.
Therefore, even if the air separation pressure tank 2 of the present invention is used in a vertical arrangement as shown in FIG. 6 (D), the functions of the hermetic expansion tank and air separator of the conventional example 1 (FIG. 7) 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 pipe S may be connected by an ethylene-propylene rubber pipe.
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.

Accordingly, as shown in FIG. 6C, 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.

  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. 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.

  Further, in the present invention, for example, as shown in FIG. 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 placed 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 the 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.

  In this case, 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. Typically, as shown in FIG. 3, 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'.

In addition, 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. , the air separation pressure tank 2 and the auxiliary tank 2 'to time, but the water level surface wL _1, wL more water flows, when flowing water in the system with tap water inflow pressure 0. At 5 Mpa, 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).

  And in the system, in addition to the natural expansion pressure of water adjusted in the air separation pressure tank 2 due to the rise in water temperature, and the compression and expansion pressure of air accompanying the natural expansion pressure, equipment and piping where water exists, There is pressure in the system due to the activity of uniformly loaded water molecules, and with 3 kW heating capacity, if the amount of water in the system (14 L) is large and the water temperature is 80 ° C, one air separation pressure tank 2 cannot absorb it. Although the pressure of 0.16 Mpa is generated, the pressure inside the system is reduced to 0.04 Mpa by the arrangement of the auxiliary tank 2 ′ (the pressure inside the system is set to the desired 0.01 Mpa, 0.04 Mpa at 80 ° C.) The capacity and shape of the pressure tank are designed).

Accordingly, 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.
Of course, if the water in the auxiliary tank 2 ′ is not 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.

  In addition, 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.

  Therefore, 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.

  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.

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. 7) has been developed and adopted, the heater unit The box 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.

  In the heating system of the present invention, 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.

[Heater unit box housing (Figs. 4 and 5)]
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 into a housing, and FIG. 5 (B) is a cross-sectional view taken along line BB in 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. In the assembled form of FIG. 5 (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. 4 (A), 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. 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. 4A, 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.
In addition, 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. 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. 4B and 5D, 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. 6)]
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), and 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.

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. .
In addition, as shown in FIG. 6C, 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. 6C, the water level surface wL ₁ in the normal temperature (15 ° C.) water state, the water volume 0.28 L, and the air volume (space volume) 0 .22L, 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.

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.
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.

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 time of 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 amount) of 0.31 L. When the heating 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. 3)]
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, 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. 2)]
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. 2)]
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.

[Ball valves 6A, 6B, 6C (FIG. 2)]
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.

[Cheese 7, 7A (FIGS. 2 and 3)]
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, and 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.

[Incorporation of equipment into the heater unit box (Figs. 2 and 3)]
For example, in the case of the vertical heater unit box 1 shown in FIG. 2, 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. 1 (B), in the heater unit box 1, from the return pipe R to the circulation pump 3 → pipe An inflow path of the heater 4 → the air separation pressure tank 2 → the forward pipe S is formed.

  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. To do.

In this case, as shown in FIG. 3, 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.
Further, 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 ′.

  That is, 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 piping of the circulation system from the air separation pressure tank 2 to the heat radiating section 8 with a branch pipe P6 'between P6 and P7, so that water at the time of rising water temperature Absorbs pressure in the system that increases due to molecular activity.

Next, using the gaps between the devices and the like, 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.

  Of course, before shipment, the ends of the forward pipe (supply pipe) S and the return pipe (return pipe) R are connected with joint fittings in the factory, and the ball valve 6B is closed as shown in FIG. , Water flows in from the ball valve 6A, energizes to operate the circulation pump 3 and the pipe heater 4, drains from the ball valve 6A, vents the air in the system, raises the hot water, Ship it after applying a load to the auxiliary tank 2 'and confirming that there is no water leakage and abnormal equipment.

[Mounting the heater unit box 1 (FIGS. 1, 2 and 3)]
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 The electric box 9A embedded in the wall of the power source and the power supply wire in the heater unit box 1 through the appropriate holes of the five wire insertion holes H1 connected to the lower joint 8J and drilled in the left side plate 1L. Connect the wire drawn from the cable.

Then, 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.
In this case, 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.

[Water filling and venting (Fig. 3)]
As shown in 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). Attach a short transparent hose (D) to the ball valve 6C, raise it 1 m, maintain the lift (e), and insert the tip of the transparent hose (D) into the bucket (a).
Next, the water tap is opened, and tap water flows from the ball valve 6A at a water pressure as in the water flow w. When the water flows out from the ball valve 6C into the bucket (I), the ball valve 6A and the water tap ( A) is closed, the water pressure in the system is set to a predetermined pressure at the head (e) on the outflow side, the ball valve 6C is closed, and the ball valve 6B is opened.
Thereby, the air of the equipment in the water path in the radiator 8 and the heater unit box 1 is discharged when the water flows in due to the water pressure, and the inside of the hot water circulation heating system is given at the head (e). The required amount of water can be filled under pressure (0.01 Mpa).
Next, when the power is turned on and water is circulated, and no abnormal noise is generated from the circulation pump 3 and the pipe heater 4, it can be confirmed that the air in the system has been properly removed.

  That is, as shown in FIG. 3D, 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), Connect the valve 6C and a bucket (a) containing a little water through the transparent hose (d) while maintaining the lift (e), and connect the bucket (a) side transparent hose (d) to the ball valve. Hold 1m above 6C.

In this case, if you use a transparent hose (D), you can see the bubbles, and if you put water in the bucket (I) and secure the tip of the transparent hose (D) in 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 by stopping the water supply, 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.

That is, if the tap (a) of the water supply is opened, the water flow w flows into the system, and the air separation pressure tank 2 and the auxiliary tank 2 ′ have a predetermined flow rate with the water flow w accompanied by the water pressure. Water flows up to above the initial water level surfaces wL ₁ and wL, but it is confirmed that air is discharged into the bucket (A) together with abnormal noise, and the faucet (A) and ball valve 6A are closed to supply water. if stopped, 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 is above the water level surface is 10 mm to 20 mm above the front side 2F, and the water that is above the water level is discharged along with the air into the bucket (I) via the ball valve 6C and the transparent hose (D). 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.
Next, the ball valve 6C is closed and the ball valve 6B is opened to secure a water passage during operation.

  In general, as shown in FIG. 7 (A), 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.

In addition, when water fills, water flows into the air separation pressure tank 2 and the auxiliary tank 2 ′, initial pressure is introduced by holding the transparent hose (d) at a high position, and the water in the tank 2 ′ becomes the water level surface wL ₁ It was confirmed by a demonstration test that the pressure was stable at wL and that the pressure in the system was 0.04 Mpa at 80 ° C.
When the water is filled, the water flowing into the air separation pressure tank 2 and the auxiliary tank 2 'in the sealed state has air in the pressure tanks 2 and 2'. However, the water in the transparent hose (D) on the side of the bucket (I) that is kept high when the water supply is stopped is discharged into the bucket (I) and air is open. The water above the water level is discharged due to the stable state of the system pressure.

[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. 1 and 2), 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. On the 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 ′. If the connection port J3 on the lower side of the auxiliary tank 2 ′ is connected, the auxiliary tank 2 ′ can discharge the inflowing water and secure the air essence Za as the pressure tank 2 ′.
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.

That is, 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. 6D, and the 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.

  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. 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.

  In the embodiment, 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.

It is explanatory drawing which arranged the heater unit box side by side with a radiator, (A) is a front view arranged in the vertical direction, (B) is a left side view of (A), and (C) is a right side view of (A). (D) is a front view arranged in the horizontal direction, (E) is a right side view of (D). It is explanatory drawing of a vertical heater unit box, (A) is a water flow system diagram, (B) is an internal top view, (C) is an internal front view, (D) is an internal side view. 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. It is explanatory drawing of a heater unit box, (A) is the assembly state perspective view of a housing, (B) is the BB sectional drawing of (A) figure, (C) is C section vertical section of (A) figure FIG. 4D is an enlarged view of the surface, FIG. 4D is an enlarged view of a portion D in FIG. 5B, and FIG. It is explanatory drawing of an air separation pressure tank, Comprising: (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 A longitudinal cross-sectional view, (D) is a vertical usage explanatory diagram. 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.

Explanation of symbols

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 (pressure auxiliary tank, pressure tank)
2A Front blade (lower blade, blade)
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 6A, 6B, 6C Ball valve 7 Cheese 7A Cross cheese 8 Radiator 8A Horizontal pipe 8B Vertical pipe 9A Electrical box (electrical piping box)
9B Display panel (operation panel)
11 Mounting base a Air flow EP Folding part FS Floor H1 Wire insertion hole H2 Screw hole H3 Air flow hole J1, J2, J3 Connection port P1, P2, P3, P4, P5, P6, P7 Piping P6 'Branch pipe R Return pipe (return pipe)
S Outward pipe (supply pipe)
w Water flow WS Wall surface wL, wL ₁ , wL ₂ Water level surface Za Air area A Tap water faucet (faucet)
I Bucket Pressure-resistant hose D Transparent hose height

Claims (8)

An electric heating type hot water circulation type heating system in which one radiator (8) and one square cylindrical heater unit box (1) are arranged correspondingly, and the radiator (8) is supplied with hot water. It is a hot water circulation type radiator with a port (8S) and a hot water discharge port (8R). The heater unit box (1) includes an air separation pressure tank (2), a circulation pump (3), and a pipe heater (4) . connect piping, in the pipe path, cheeses with a ball valve (6C) (7A), a ball valve (6B), and with serially arranged cheese (7) provided with a ball valve (6A), cheese ( connect the pressure auxiliary tank (2 ') at the tip of the branch pipe extending from 7A) (P6') to retract and the hot water circulation function, the radiator in forward pipe (S) and the return pipe (R) (8 Electric hot water circulation heating system connected to. 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) . Electric hot water circulation heating system. 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 contact with the left side plate (1L) and an abutment anchor piece (1F) for contact with the left side plate (1R) of the left side plate (1L). Screw holes (H2) are arranged at appropriate positions at the upper and lower ends of the plate (1L) and the right plate (1R), the screw holes (H2) of the upper lid (1U) and the lower lid (1D), the left plate (1L) and the right side The electric hot water circulation heating system according to claim 2 , wherein the screw hole (H2) of the plate (1R) is screwed together. The air separation pressure tank (2) and the auxiliary tank (2 ') are the same, and have a lower side (2D), a front side (2F), a rear side (2B), an upper side (2T), and both sides (2L, 2R). ), And the upper side (2T) is a box shape that is continuous with the front side (2F) at the front inclined side (Sf) and the rear side (2B) at the rear side inclined side (Sb), and has the front side (2F) ) Is provided with a connection port (J1) at the center of the upper and lower sides, a connection port (J2) at the center of the upper and lower sides (2B), and a connection port (J3) at the rear of the upper side (2T). 2L, 2R), the two blades (2A, 2A ') that incline and rise backward, and the front blades (2A) are located at the rear corresponding position of the front side connection port (J1). , rear slats (2A ') is obtained by arranged below the corresponding position of the upper side connection port (J3) above, electric water according to any one of claims 1 to 3 Ring heating system. 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 water circulation heating system according to claim 4. 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 4 , which is closed at the same time. When the rectangular heater unit (1) is vertically used, the auxiliary tank (2 ') is arranged with the front side (2F) on the lower side and the rear side (2B) on the upper side. The connection port (J3) of (2T) and the connection port (J2) of the rear side (2B) are closed with a cap (2C), and the connection port (J1) of the front side (2F) is a cross cheese for water filling and air venting The electric hot water circulation heating system according to claim 5 , wherein the electric hot water circulation heating system is connected to an upper end of the branch pipe (P6 ') extending from the ball valve (6C) from (7A). When the square cylindrical heater unit box (1) is used in a horizontal 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) is closed with the cap (2C), and the lower connection port (J3) is inserted from the cross cheese (7A) for water filling and air venting through the ball valve (6C). extending therefrom and branch pipe (P6') connected to the upper end, an electric water circulation heating system according to claim 6.