JPH0894094A - Additional heating and heating device and water drain device for additional heating operation - Google Patents

Abstract

PURPOSE: To provide an additional heating and a heating device capable of performing positively an additional heating and a hot water heating with one boiler. CONSTITUTION: A boiler 1 and a bath tub 2 are connected through an additional boiling going-pipe passage 3 and a returning pipe passage 4. A hot water heating going-pipe passage 6 and a returning pipe passage 7 communicated with a bath room drying machine 5 are connected at the midway part of the additional heating going-pipe passage 3 and a returning pipe passage 4 through a three-way changing-over valve 8. The hot water heating going-pipe passage 6 and the returning pipe passage 7 are provided with air releasing valves 10, 11 and pressure control means (a safety valve 9 and an expansion tank 12). With such an arrangement as above, it is possible to discharge air mixed in the additional boiling circuit and the hot water heating circuit to an external area through the air releasing valves 10, 11 when the additional boiling circuit is changed over to the hot water heating circuit. In addition, a pressure variation caused by a volumetric expansion produced in water in the hot water heating circuit can be accommodated by the safety valve 9 and the expansion tank 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a re-cooking / heating apparatus having a re-cooking function and a hot water heating function, and a re-cooking drainage unit attached to the bottom of a bathtub.

[0002]

2. Description of the Related Art In general, a reheating device is composed of an open circuit connecting a boiler and a bathtub, and a hot water heating device is a closed type or a semi-closed type that connects a boiler to a hot water heating device such as a floor heating panel or a fan convector. It is composed of a circuit, and conventionally, these dedicated devices are separately arranged to perform additional cooking and hot water heating.

On the other hand, the tub for additional cooking is provided with an inlet and an outlet connected to the above-mentioned open circuit, and a drain outlet for draining hot and cold water in the tub. For bathtubs that do not have entrances and exits for additional cooking, holes are drilled on the side of the bath at the site.

[0004]

By the way, when one boiler is shared by reheating and hot water heating, an open circuit used for reheating and a closed circuit or a semi-enclosed circuit used for hot water heating are used. It is necessary to interpose and with the circuit switching device in between. However, since the circuit on the reheating side is open type and the temperature range used is different between the reheating and hot water heating, when the circuit on the reheating side is switched to the circuit on the hot water heating side, the air in the circuit is changed. There is a problem in that water is mixed and causes a loss of heat transfer energy, and there is a problem in that the water in the circuit expands in volume and the circuit is damaged.

On the other hand, since the additional cooking bath has an additional cooking inlet and an outlet on the side surface and a drain port on the bottom surface, the positions of the two are far from each other, which makes piping work extremely troublesome. In addition, there is a problem in that the hot and cold water in the bathtub may have a large difference in temperature depending on the positions of the entrance and the exit for additional cooking.

The present invention has been made in view of the above problems. A first object of the present invention is to provide an additional cooking / heating device capable of accurately performing additional cooking and hot water heating with one boiler. It is an object of the invention to provide a drainage unit for additional cooking, which is simple in piping work and which can eliminate the temperature difference between the upper and lower sides during additional cooking.

[0007]

In order to achieve the above first object, the invention of claim 1 connects a boiler and a bathtub through an additional cooking forward line and a return line to provide hot water heating equipment. The forward and return pipes for hot water heating that are connected to the hot water heating and return pipes are connected in the middle of the forward and return pipes for reheating and heating via the circuit switching means, and the forward and return pipes for hot water heating are connected. It is characterized in that at least one of the pipelines is provided with an air bleeding means and a pressure control means.

According to the second aspect of the present invention, the boiler and the bathtub are connected to each other through the re-cooking forward and return pipes, and the hot water heating forward and return pipes leading to the hot water heating equipment are respectively connected. The upstream and return pipes for reheating are connected to each other through circuit switching means, and the forward and return pipes for hot water heating are provided with air bleeding means and pressure control means, respectively. Is characterized by.

A third aspect of the present invention is the reheating and heating device according to the first or second aspect, wherein the boiler includes at least a burner, a heat exchanger, a hot water storage tank, and a circulation pump.

In order to achieve the second object, the invention according to claim 4
The present invention is characterized in that an inlet passage and an outlet passage for additional cooking are provided around the drainage passage.

According to a fifth aspect of the present invention, there is provided a casing having an annular space around the drainage passage, partition means for partitioning the annular space into two chambers, an inner space and an outer space, and a chamber provided above and below one chamber of the annular space. It is characterized in that it is provided with a hole forming an inlet passage and a hole provided above and below the other chamber of the annular space to form an outlet passage with the chamber.

According to a sixth aspect of the present invention, in the drainage unit for additional cooking according to the fifth aspect, the casing includes a lower case and an upper case which can be connected to each other, and the lower case and the upper case sandwich the bottom hole of the bath. It is characterized by combining.

[0013]

According to the first to third aspects of the invention, since the air bleeding means and the pressure control means are provided in the outgoing and return pipes for hot water heating, the circuit on the side of reheating is switched to the circuit on the side of hot water heating. At that time, the air mixed in the circuit can be discharged to the outside through the air bleeding means, and the pressure fluctuation caused by the volume expansion of the water in the circuit on the hot water heating side can be absorbed by the pressure control means.

According to the invention of claims 4 to 6, since the inlet passage and the outlet passage for additional cooking are arranged around the drainage passage, the passages can be installed adjacent to each other only by attaching the unit to the bottom of the bathtub. .

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a circuit diagram of a reheating / heating device according to the present invention. In the figure, 1 is a boiler,
2 is a bathtub, 3 is a forward line for additional cooking, 4 is a return line for additional cooking, 5 is a hot water heating device (bathroom dryer), 6 is an outgoing line for hot water heating, and 7 is hot water heating Is a return pipe, and 8 is a three-way switching valve.

The boiler 1 includes a burner 1a that uses gas or kerosene as a fuel, a heat exchanger 1b that heats water by the combustion heat of the burner 1a, a tank 1c that temporarily stores hot water after heat exchange, and a tank. Pump 1 for circulating hot water in 1c
d and an air vent valve 1e for discharging the air in the tank 1c.

The bathtub 3 has an entrance 2a on the side surface for additional cooking.
And an outlet 2b, and a drain port 2c on the bottom surface. This bathtub 3 has an inlet 2a connected to a water outlet (pump side) of the boiler 1 via a forward line 3, and an outlet 2b connected to a water inlet (heat exchanger side) of the boiler 1 via a return line 4. It is connected to the.

The bathroom dryer 5 is a heat exchanger 5a for radiating heat.
And a fan 5b for blowing hot air and a fan 5c for bathroom ventilation. In this bathroom dryer 5, one end of the heat exchanger 5a is connected to the middle of the reheating cooking forward pipe 3 via the forward conduit 6, and the other end of the heat exchanger 5a is connected to the return conduit 7. Is connected in the middle of the return conduit 4 for additional cooking.

The three-way switching valve 8 is arranged at each of the connection points of the forward pipelines 3 and 6 and the connection points of the return pipelines 4 and 7, and performs circuit switching between the reheating side and the hot water heating side. A safety valve 9 and an air bleed valve 10 are connected to the outgoing line 6 for hot water heating, and an air bleed valve 11 for the return line 7 for hot water heating.
And an expansion tank 12 for pressure control are connected.

When the above-mentioned apparatus is used for additional cooking, as shown in FIG. 2 (a), both of the three-way switching valves 8 are switched to the bath 2 side, and the hot water temperature in the boiler 1 is 35 to 43 ° C.
Set to. Hot water F in the bathtub 2 is returned from the outlet 2b to the return conduit 4
After being drawn into the boiler 1 through the, heated to an appropriate temperature in the boiler 1, it is returned from the inlet 2a into the bath 2 through the outward passage 3.

Further, hot water heating (bathroom drying) is performed by the above-mentioned device.
2B, both three-way switching valves 8 are switched to the dryer 5 side, and the hot water temperature in the boiler 1 is set to 60 to 80 ° C. The hot water heated to the proper temperature in the boiler 1 flows into the outward passage 6 from the outward passage 3 for additional cooking through the three-way switching valve 8 and the forward passage 6
Through the heat exchanger 5a of the bathroom dryer 5.
Then, by the operation of the fan 5b, warm air is blown into the bathroom to dry clothes and the like. The hot water sent to the heat exchanger 5a flows from the return pipe 7 through the three-way switching valve 8 to the return pipe 4 for additional cooking, and returns to the boiler 1 through the return pipe 4 to be heated again.

In the above-mentioned device, since the circuit on the reheating side is an open type, even if air is mixed in the circuit on the reheating side when switching from the circuit on the reheating side to the circuit on the hot water heating side, the air Is discharged to the outside through the air bleeding valves 10 and 11 provided in the forward line 6 and the return line 7, respectively, so that the loss of heat transfer energy due to air mixing is avoided and hot water heating (bathroom Can be efficiently performed.

Further, since the utilization temperature band is different between the additional cooking and the hot water heating, when the circuit on the additional cooking side is switched to the circuit on the hot water heating side, the volume of water in the circuit expands. Since the pressure fluctuation due to is absorbed by the safety valve 9 and the expansion tank 12 provided in each of the outgoing line 6 and the return line 7, circuit damage caused by expansion is avoided and hot water heating (bathroom drying) does not fail. It can be carried out.

In the above embodiment, the bathroom dryer is exemplified as the hot water heater, but a fin convector, a floor panel or the like may be used instead of the dryer. Although the three-way switching valve is illustrated as the circuit switching means, the circuit switching means may be replaced by an on-off valve or the like provided at each of the positions downstream of the connection point of the forward conduit and upstream of the connection point of the return conduit. You may.

FIGS. 3 and 4 show a drainage unit for additional cooking according to the present invention. In the figure, 21 is a lower case, 22 is a lower partition plate, 23 is an upper case, 24 is an upper partition plate, and 25 is a cover.

The lower case 21 is formed of resin or metal in a substantially cylindrical shape, and has a flange 21a on the outer periphery of the upper end and a connecting cylinder 21 at the center.
b respectively. Further, an annular recess 21c is provided between the collar 21a and the connection cylinder 21b, and an inlet cylinder 21d and an outlet cylinder 21e communicating with the recess 21c are provided on the bottom surface. A thread groove for connecting the upper partition plate 24 and the drainage pipe H is formed on the inner surface of the connection cylinder 21b, and the annular recess 21c is formed.
A screw groove for connecting the upper case 23 is formed on the outer inner wall of the.

The lower partition plate 22 is made of resin or metal, and has a lower member 22a having an inverted T-shaped cross section, and an upper member 22 having an inverted L-shaped section that is slidably fitted in the lower member 22a in a watertight state.
b, and is arranged in the annular recess 21c of the lower case 21 to partition the recess 21c inside and outside. A hole 22c communicating with the inlet tube 21d of the lower case 21 is formed outside the lower piece of the lower member 22a, and the lower case 21 is formed inside the lower piece.
A hole (not shown) that communicates with the outlet cylinder 21e is similarly formed. Further, the annular recess 2 is formed on the upper piece of the upper member 22b.
A hole 22d that communicates with the inner portion of 1c is formed.

The upper case 23 is formed of resin or metal into a substantially cylindrical shape, and has a flange 23a on the outer periphery of the upper end. The upper case 23 is attached to the outer surface of the lower part of the upper case 23.
A screw thread is formed to connect to the first annular recess 21c.

The upper partition plate 24 is formed of resin or metal in a disk shape, has a drainage pipe 24a at the center, and has an annular piece 24b at the center of the upper surface. A hole 24c communicating with the inner portion of the annular recess 21c is formed inside the annular piece 24b of the upper partition plate 24, and a hole 24d communicating with the outer portion of the annular recess 21c is formed outside the annular piece 24b. There is. Further, the upper partition plate 24 is provided on the outer surface of the lower portion of the drain pipe 24a.
Is formed on the upper case 21 to connect to the connection cylinder 21b.

The cover 25 is made of resin or metal in the shape of a disk and has a plurality of (12 in the figure) water outlet holes 25a and water inlet holes 25b at the inner peripheral portion and the outer peripheral portion thereof at equal intervals in the circumferential direction. are doing. A central hole 25c for exposing the drainage pipe 24a of the upper partition plate 24 is formed in the center of the cover 25.

A lower partition plate 22 and an upper partition plate 24 are preliminarily fixed to the lower case 21 before mounting, and the upper case 23
The cover 25 is previously fixed to the. Where bathtub Y
The procedure for attaching the above-mentioned drainage unit to the bottom surface hole Ya will be described.

First, the upper surface of the collar 21a of the lower case 21 is U,
Either pressing a suitable packing P1 of V, W type or the like against the lower surface of the bottom surface hole Ya, and pressing the collar 23a of the receiving case 23 against the upper surface of the bottom surface hole Ya with the same packing P1 interposed therebetween. Alternatively, both of them are rotated so that they are connected to each other.

In this connecting process, the upper end of the annular piece 24a of the upper partition plate 24 is brought into close contact with the water outlet hole 25a and the water inlet hole 25b of the lower surface of the cover 25, and the inner peripheral lower end of the cover 25 is brought into close contact with the upper surface of the upper partition plate 24. Then, the lower partition plate 22 slightly contracts according to the connecting stroke. Further, the lower case 21 and the upper case 23 connected to each other define an annular space around the drain pipe 24a, and the annular space is formed by the upper and lower partition plates 22, 24.
It is divided into two rooms, inside and outside.

Incidentally, in this embodiment, the water outlet hole 25a in the inner peripheral portion of the cover 25, the hole 24c in the upper partition plate 24, the hole 22d in the lower partition plate 22, the inner portion of the annular recess 21c and the hole in the lower partition plate 22 (shown in the figure). (Omitted) and outlet tube 21 of lower case 21
e forms an outlet passage for sending hot and cold water in the bathtub Y to the cooker, and the inlet cylinder 21d of the lower case 21, the hole 22c of the lower partition plate 22, the outer portion of the annular recess 21c, and the hole of the upper partition plate 24. 24d and cover 25 water inlet 2
An inlet passage for returning hot water after heating into the bathtub Y is constituted by 5b.

After the installation is completed, the drain pipe H is screwed into the inside of the connection cylinder 21b of the lower case 21 through the O-ring P2 from the lower side, and is attached to the inlet cylinder 21d and the outlet cylinder 21e of the lower case 21. For example, the piping from the additional cooking / heating device shown in FIG. 1 is connected. Then, the drain hole 24a of the upper partition plate 24 is attached to the center hole 25c of the cover 25.
Attach the rubber stopper S through.

At the time of additional cooking, the water in the bathtub Y is covered by the cover 2.
5 From the water discharge hole 25a in the inner peripheral portion to the hole 24c of the upper partition plate 24
And through the hole 22d of the lower partition plate 22 into the inner portion of the annular recess 21c, and from the same portion through the hole (not shown) of the lower partition plate 22 through the outlet cylinder 21e of the lower case 21 to be fed into the reheating device. .

The hot water heated by the reheating device flows from the inlet cylinder 21d of the lower case 21 through the hole 22c of the lower partition plate 22 into the outer portion of the annular recess 21c, and from that portion through the hole 24d of the upper partition plate 24. It is returned into the bathtub Y from the water inlet hole 25b in the outer peripheral portion of the cover 25.

When draining the hot and cold water in the bathtub Y, the cover 2
The rubber plug S attached to the drainage pipe 24a of the upper partition plate 24 is removed from the center hole 25c of No. 5, and when storing hot water in the bathtub Y, the rubber plug S is attached again to the drainage pipe 24a through the center hole 25c.

Since the above-mentioned drainage unit has a doubled inlet passage and outlet passage around the drainage passage, the unit can be attached to the bottom surface of the bathtub Y to remove the additional drainage passage and the additional drainage passage. An entrance passage and an exit passage can be installed in the bathtub Y. Moreover, since the drainage passage and the inlet passage and the outlet passage for additional cooking are adjacent to each other, piping work to these can be performed very easily. Further, since the inlet passage and the outlet passage for additional cooking are arranged on the bottom surface of the bathtub together with the drainage passage, there is no difference in vertical temperature between the hot and cold water in the bathtub Y during additional cooking.

In the embodiment shown in FIGS. 3 and 4, the cover 25 is provided with the water outlet hole 25a and the water inlet hole 25b at the outer peripheral portion thereof.
4c, a water outlet hole is formed only in the cover portion, and a water inlet hole is formed only in the cover portion corresponding to the hole 24d of the upper partition plate 24 to separate the water outlet portion from the water inlet portion. If the unnecessary portion of the hole 25b is closed to separate the water supply portion from the water supply portion, hot water after additional cooking can be prevented from flowing into the water discharge hole as it is, and the hot water in the bathtub Y can be efficiently heated. it can.

The upper partition plate 24 is attached to the lower case 21.
If the holes 24c and 24d are rotatably arranged so that the directions of the holes 24c and 24d can be changed in the process of mounting the unit, for example, the bottom surface hole Ya is closer to the inner wall of the bathtub depending on the position of the bottom surface hole Ya of the bathtub Y. In the case where the water is formed, it is possible to prevent the hot water after being cooked from hitting the bather by changing the direction of the water entry hole 24c toward the inner wall side.

[0042]

As described in detail above, according to the inventions of claims 1 to 3, even when air is mixed in the circuit when the circuit on the reheating side is switched to the circuit on the hot water heating side,
The air can be discharged to the outside through the air bleeding means to avoid the loss of heat transfer energy due to the mixing of the air and efficiently perform hot water heating. Further, the pressure control means absorbs the pressure fluctuation caused by the volume expansion of the water in the circuit on the hot water heating side, so that the circuit damage due to the expansion can be avoided and the hot water heating can be performed without failure.

According to the inventions of claims 4 to 6, since the inlet passage and the outlet passage for additional cooking are arranged around the drainage passage, the passages can be made adjacent to each other only by attaching the unit to the bottom of the bathtub. It can be installed and piping work to these can be performed very easily. Further, since the inlet passage and the outlet passage for additional cooking are arranged on the bottom surface of the bathtub together with the drainage passage, there is no difference in temperature between the hot and cold water in the bathtub during additional cooking.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an additional cooking / heating device according to the present invention.

FIG. 2 is a diagram showing a circuit switching state.

FIG. 3 is a top view of a drainage unit for additional cooking according to the present invention.

FIG. 4 is a cross-sectional view of a drainage unit for additional cooking according to the present invention.

[Explanation of symbols]

1 ... Boiler, 2 ... Bathtub, 3 ... Outgoing line for additional cooking, 4
... Return line for additional cooking, 5 ... Bathroom dryer, 6 ... Forward line for hot water heating, 7 ... Return line for hot water heating, 8 ... Three-way switching valve, 9 ... Safety valve, 10, 11 ... Air Vent valve, 12 ... Expansion tank, 21 is lower case, 21c ... Annular recess, 21d ...
Inlet pipe, 21e ... Outlet pipe, 22 is a lower partition plate, 23 is an upper case, 24 is an upper partition plate, 25 is a cover, 25a ... Water outlet, 25b ... Water inlet, Y ... Bathtub, Ya ... Bottom hole.

Claims (6)

[Claims] 1. A boiler and a bathtub are connected to each other through a re-feeding forward and return pipes, and each of the forward and return pipes for hot water heating leading to a hot-water heating device is provided with the above-mentioned forward feed. The air passage means and the pressure control means are provided in at least one of the forward conduit and the return conduit for hot water heating, while connecting through the circuit switching means in the middle of the conduit and the return conduit. Additional heating and heating system. 2. A boiler and a bathtub are connected to each other through a re-feeding forward pipe and a return pipe, and each of the hot-water heating forward pipe and the return pipe leading to the hot-water heating device is connected to the above-mentioned re-feeding pipe. A connection is provided in the middle of the pipeline and the return pipeline through circuit switching means, and an air bleeding means and a pressure control means are provided in each of the forward and return pipelines for hot water heating. Cooking and heating system. 3. The additional cooking / heating device according to claim 1, wherein the boiler includes at least a burner, a heat exchanger, a hot water storage tank, and a circulation pump. 4. A drainage unit for additional cooking, comprising an inlet passage and an outlet passage for additional cooking around the drainage passage. 5. A casing having an annular space around the drainage passage, a partitioning means for partitioning the annular space into two chambers, an inner space and an outer space, and one chamber above and below the annular space to form an inlet passage. A drainage unit for additional cooking, comprising a hole and a hole provided above and below the other chamber of the annular space to form an outlet passage with the chamber. 6. The cooker according to claim 5, wherein the casing is composed of a lower case and an upper case that can be connected to each other, and the lower case and the upper case are connected to each other with a bottom hole of the bath tub interposed therebetween. Drainage unit.