JPH0664053U - 1 can, 2 circuit type bath kettle - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a one-can, two-circuit type bath kettle with improved reheating ability during independent operation on the bath side. [Structure] In the present invention, the heat exchange part (a) having the heat-absorbing pipe (3) for hot water supply and the heat-absorbing pipe (4) for bath sharing the fin (2)
And the heat-absorbing pipe for hot water supply, which is arranged below the heat exchange section (a).
Burner for heating shared by (3) and endothermic tube for bath (4)
In a 1-can 2-circuit type bath cooker comprising a burner section (b) having (5), an upper bath endothermic tube (41) and a lower bath endothermic tube in which the bath endothermic tubes (4) are in communication with each other (42) and the hot-water heat-absorbing pipes (3) are arranged so as to be sandwiched vertically, and the lower-bath heat-absorbing pipe (4) close to the burner (5)
In 2), there is provided a switching means for switching the usage state of the bath heat absorbing tube (4) according to the operating conditions of hot water supply and bath use.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a one-can, two-circuit bath kettle with improved reheating capability when operated independently on the bath side.

[0002]

[Prior art]

 Conventionally, a general one-can, two-circuit bath kettle requires a higher output for hot water supply, so a hot water supply heat absorption tube is installed near the burner and a bath heat absorption tube is installed far away. .

That is, in the heat exchange part of the bathtub, the bath heat-absorbing pipe is arranged above the hot water supply heat-absorbing pipe on the burner side (opposite to the burner), and both heat-absorbing pipes are spaced from each other. It is composed.

However, if the amount of combustion is increased in order to improve the capacity of the bath alone operation, it is impossible to prevent the hot water in the heat-absorbing pipe for hot-water supply during still water from being overheated, and if hot water is supplied immediately after the bath alone operation. There was a danger of hot water coming out, which was a safety issue.

Therefore, as described in Japanese Utility Model Laid-Open No. 62-55037, the heat-absorbing tubes for hot water supply and the bath are brought into contact with each other, and heat exchange is carried out by both heat-absorbing tubes so that the hot water in the hot-water supply and heat-absorbing tubes Some have been designed to prevent overheating.

By contacting the bath heat-absorbing pipe and the hot-water supply heat-absorbing pipe with each other, both heat-absorbing pipes can perform heat exchange when the bath side is operated independently, thereby preventing overheating of the hot-water in the hot-water supply heat-absorbing pipe. The hot water does not come out of the faucet when the hot water is supplied immediately after the bath-side independent operation.

[0007]

[Problems to be Solved by the Invention] However, the one-can, two-circuit bath tub having the above-mentioned configuration still has the following problems.

That is, in the bathtub, as in a general bathtub, a hot water supply endothermic pipe is arranged near the burner and a bath endothermic pipe is placed far away.

[0009] Therefore, there is a limit to improving the ability of the bath alone, and it has not yet been possible to accelerate the bath heating time to a satisfactory level.

[0010] For example, if the combustion amount is further increased in order to further improve the capacity of the bath alone operation, overheating of the hot-water heat-absorbing pipe is inevitable even with the above-mentioned configuration, and the conventional method is not used. In addition, if hot water is supplied immediately after the bath is operated independently, hot water may still be discharged, which is not safe.

Further, when the above-mentioned arrangement of both endothermic pipes is reversed (the endothermic pipe on the bath side is disposed on the burner side), the capacity of the bath alone operation can be improved, but when the hot water supply alone is operated. However, there is a risk that all of the hot water in the bath heat absorption tube will evaporate, which may cause a problem that the circulation pump cannot be operated during the next bath operation.

There is also a problem that when the hot water supply and the bath are used at the same time, the heat absorption amount of the hot water supply is too small to take a comfortable shower, for example.

It is an object of the present invention to provide a 1-can 2-circuit type bathtub that solves the above problems.

[0014]

[Means for Solving the Problems]

 According to the present invention, a heat exchange part having a hot water supply heat-absorbing pipe and a bath heat-absorbing pipe sharing a fin is attached, and the heat exchange part is arranged below the heat exchange part. In a 1-can 2-circuit type bath kettle having a burner section having a common heating burner, the bath heat absorbing tube is formed by an upper bath heat absorbing tube and a lower bath heat absorbing tube which are in communication with each other. , The hot-water heat-absorbing pipes are arranged so as to be sandwiched vertically, and the use state of the heat-absorbing pipe for the bath is switched to the heat-absorbing pipe for the lower bath near the burner according to the operating conditions of hot-water supply and bath. The present invention is to provide a one-can, two-circuit type kettle which is provided with a switching means for.

Further, the present invention is also characterized in that the bath heat absorption pipe is fixed to the hot water supply heat absorption pipe by brazing or the like, and is arranged in at least a contact state.

The present invention is also characterized in that the bath heat absorption pipe is arranged in a separated state with a slight gap from the hot water supply heat absorption pipe.

[0017]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

FIG. 1 conceptually shows the overall structure of a 1-can 2-circuit type bath kettle A according to the present invention. The bath kettle A is used for a can body 1, a circulation pump P, hot water supply / bath It mainly consists of piping.

Then, it is connected to a water pipe through a water supply port 37, connected to a washbasin, a shower, and a hot water supply destination such as a kitchen through a hot water outlet 38, and a bath inflow port 39 and a bath outflow port 40 are provided. It is connected to the bathtub 9 via the and so as to supply hot water or water to each place as needed.

As shown in FIG. 1, the can body 1 has a heat exchange part a to which a hot water supply heat absorption pipe 3 sharing a fin 2 and a bath heat absorption pipe 4 are attached, and below the heat exchange part a. The burner section b is provided and has a heating burner 5 shared by the hot water supply heat absorption tube 3 and the bath heat absorption tube 4.

The heat exchanging part a has the hot water supply heat-absorbing pipe 3 formed in a bent shape and arranged in a meandering manner, and has a water inlet 3 a and a water supply port 37 which are upstream end portions of the hot-water supply heat-absorbing pipe 3. A hot water supply pipe 12 is connected, and a hot water supply pipe 13 is connected to a hot water outlet 3b which is an end portion on the downstream side.

The hot water supply side water amount detector 14 and the hot water supply temperature detector 15 are attached to the hot water supply pipe 12 from the upstream side, and the hot water supply pipe 13 has a can body outlet temperature detector 17 from the hot water outlet 3b side. The vacuum breaker 18 is installed.

Further, the bath heat absorbing tube 4 is formed in a bent shape and arranged in a meandering shape, and the bath heat absorbing tube 4 is connected to the circulation flow path 10. It is connected to the bath tank 9 via 10 in communication. The fins 2 are attached to the hot water supply heat absorption tube 3 and the bath heat absorption tube 4 so as to be commonly used to form a bath with one can and two circuits.

The circulation flow channel 10 is composed of an inflow side circulation flow channel 10a for supplying hot water to the bathtub 9 and an outflow side circulation flow channel 10b for supplying bath water to the heat exchange section a. A circulation pump P is arranged in the side circulation flow path 10 b.

On the other hand, the burner section b is provided below the heat exchange section a, the burner 5 for heating the heat exchange section a is arranged, and the fuel supply path 6 to the burner section 5 is provided with an electromagnetic field. A valve 7 and a proportional valve 8 are attached. F is a fan for sending combustion air to the burner 5.

Further, the water supply pipe 12 and the hot water supply pipe 13 are connected via a mixing valve 19, and by mixing the water in the mixing valve 19 with the hot water, hot water of an appropriate temperature can be supplied to the hot water or the bath 9. . 20 is a water quantity valve, and 21 is a hot water supply temperature detector.

The hot water supply pipe 13 is branched at a position passing through the mixing valve 19 and the water quantity valve 20 to form a first branch flow path 22, which is the bath side water quantity detector 23. The second side branch flow path 26 and the third side branch flow path 27 are formed by further branching through the wind side solenoid valve 24 and the flow pressure adjusting valve 25.

The second branch flow channel 26 and the third branch flow channel 27 are connected to the outflow side circulation flow channel 10b and the inflow side circulation flow channel 10a, which form the circulation flow channel 10, respectively. Reference numerals 28 and 29 are check valves attached to the second branch flow path 26 and the third branch flow path 27.

In FIG. 1, reference numeral 30 is a control unit, which is connected to the water amount detector 14, the water supply temperature detector 15, the bath side water amount detector 23, etc., and based on these detection signals, the solenoid valve 7, The drive of the proportional valve 8, the fan F, the circulation pump P, the mixing valve 19, the water amount valve 20, etc. is controlled to control all the functions of the bathtub A.

A control panel 35 is attached to a wall or the like near the bath 9 and is connected to the control section 30.

In FIG. 1, 16 is a boiling prevention detector 16, 31 is a frame rod, 32 is a spark plug, and 34 is a bath water flow switch.

In the bathtub A having the above-mentioned configuration, the gist of the present invention is that the above-mentioned bath heat-absorption tube 4 is formed by the upper bath heat-absorption tube 41 and the lower bath heat-absorption tube 42 which are in communication with each other. In addition, the endothermic pipes 3 for hot water supply are arranged so as to be sandwiched vertically, and the endothermic pipe 42 for lower bath near the burner 5 is provided with the endothermic pipes for bath according to the operating conditions of hot water supply and bath. There is provided a switching means for switching the usage state of No. 4.

Further, in the present embodiment, the heat absorbing tube 4 for bath is brazed and fixed to the heat absorbing tube 3 for hot water supply, and both heat absorbing tubes 3 and 4 are arranged in contact with each other.

That is, as shown in FIG. 1, the upper bath heat absorption provided at the upper end of the hot water supply heat absorption pipe 3 at the end of the inflow side circulation flow path 10a and the outflow side circulation flow path 10b of the circulation flow path 10. A bath hot water outlet 41a, which is the downstream end of the pipe 41, and a bath hot water inlet 41b, which is the upstream end of the pipe 41, are connected in communication with each other, and are provided for the lower bath of the hot water supply heat absorption pipe 3 The downstream end and the upstream end of the endothermic pipe 42 are extended to form an extended outflow endothermic pipe 43 and an extended inflow endothermic pipe 44, and both endothermic pipes 43, 44 have a bath hot water outlet 43a and a bath hot water flow. The inlet 44a is connected to the inflow side circulation channel 10a and the outflow side circulation channel 10b, respectively.

Then, the extension inflow endothermic tube 44 of the lower bath endothermic tube 42 is used to switch the usage state of the upper bath endothermic tube 41 and the lower bath endothermic tube 42 of the bath endothermic tube 4. As a switching means, a stop valve V is provided and is connected to the control unit 30.

Further, as shown in FIG. 2, the upper bath endothermic pipe 41 and the lower bath endothermic pipe 42 are brazed and fixed respectively above and below the hot water supply endothermic pipe 3 to bring them into contact with each other, and the hot water supply is performed. The heat absorption tube 3 and the bath heat absorption tube 4 are designed to exchange heat.

In addition, the diameters of the upper bath endothermic tube 41 and the lower bath endothermic tube 42 are set as small as possible within a range that does not hinder the flow of water. Has a large heat transfer coefficient.

The operation of this embodiment will be described below.

(In the case of bath-side independent operation) When the bath is heated up, if the bath-side single operation is performed with hot water supply stopped, the closing valve V is opened to drive the circulation pump P.

In this way, when the water in the bathtub 9 (hot water) is circulated in the can body 1 and heated, the bathwater flows through both the upper bath endothermic pipe 41 and the lower bath endothermic pipe 42. Since the bath water is circulated, the bath water is also heated by the lower bath endothermic tube 42 closer to the burner 5, so that the heat receiving efficiency is increased and the boiling time can be greatly shortened.

Moreover, since the diameter of the bath heat absorbing tube 4 is small, the heat transfer coefficient is large and the temperature easily rises, so that the efficiency can be further improved.

At this time, in order to increase the heat transfer coefficient of the endothermic tube 4, a turbulent coil, a turbulent coil plate or the like can be inserted into the endothermic tube 4.

Further, the upper bath endothermic pipe 41 and the lower bath endothermic pipe 42 are brazed and fixed respectively above and below the hot water supply endothermic pipe 3 so that they are in contact with each other, so that heat exchange is performed mutually. That is, the hot water supply endothermic tube 3 does not become overheated, and there is no danger that hot water will be discharged even if hot water is supplied after the bath alone operation.

(In the Hot Water Supply Side Single Operation) In this case, the circulation pump P is in a stopped state, and the stop valve V is closed.

At this time, the hot water supply endothermic pipe 3 and the bath endothermic pipe 4 are heated at the same time, but the upper bath endothermic pipe 41 is located farther from the burner 5 than the hot water supply endothermic pipe 3, and the hot water in the pipe is Does not evaporate.

Therefore, even if the bath side independent operation is performed after this, the circulation pump P can be smoothly driven, and no trouble occurs in use.

Also at this time, as described in the case of the bath-side single operation, in order to increase the heat transfer coefficient of the hot water supply heat absorption pipe 3, a turbulent coil or a turbulent flow is provided in the hot water supply heat absorption pipe 3. A coil plate or the like can also be inserted.

(In case of simultaneous hot water supply / bath side operation) In this case, the circulation pump P is driven and the stop valve V is closed.

Since the hot-spring bath A is configured to give priority to the hot water supply side and the hot water supply function is prioritized in the case of simultaneous operation. I try not to let it absorb heat.

That is, the circulation pump P is driven to circulate the bath water in the circulation flow path 10 and the bath heat-absorbing pipe 4, but by closing the shutoff valve V, the bath water flows to the lower bath heat-absorbing pipe 42. Does not circulate.

Therefore, the bath water does not receive heat from the lower bath heat absorption tube 42, and the heat absorption on the hot water supply side increases by that much, so that the hot water supply side can be prioritized.

Also in this case, since the hot water supply heat-absorbing tube 3 and the bath heat-absorbing tube 4 are in contact with each other, it is possible to prevent the bath heat-absorbing tube 4 from overheating, and for example, for additional heating for heat retention. It is safe because hot water is not poured into the bathtub 9 when it is used.

By constructing the one-can, two-circuit type bath kettle A as described above, it is possible to double the boiling water ability on the bath side without overheating the heat-absorbing tube 3 for hot water supply when the bath side is operated independently. . As a result of the experiment, when the 1-can 2-circuit type bath kettle A of this embodiment was used, the boiling time could be halved as compared with the usual 1-can 2-circuit type bath pot.

Further, when the bath side independent operation is switched to the hot water supply side independent operation or simultaneous operation, the circulation pump P cannot be driven, hot water is discharged from the hot water supply side, or the hot water supply capacity is too small. Can be prevented.

Next, another embodiment will be described below.

This is one in which the hot-water supply heat-absorbing tube 3 and the bath heat-absorbing tube 4 are not in contact with each other and a young gap is provided.

That is, as shown in FIG. 3, an upper bath endothermic pipe 41 and a lower bath endothermic pipe 42 are arranged above and below the hot water supply endothermic pipe 3 with a slight gap.

In this case, the heat received by the lower bath heat absorption tube 42 is not conducted to the hot water supply heat absorption tube 3 when the bath is operated alone, and the hot water supply heat absorption tube 3 is not heated. Can be increased.

Further, even when the bath and the hot water supply are simultaneously used, the heat received by the hot water supply heat absorption pipe 3 is not conducted to the upper bath heat absorption pipe 41, so that the hot water supply capacity can be further increased.

Further, for example, by bringing the lower bath heat absorption pipe 42 and the hot water supply heat absorption pipe 3 into contact with each other and providing a gap between the hot water supply heat absorption pipe 3 and the upper bath heat absorption pipe 41, both effects can be obtained. It can also be configured to

[0061]

[Effect of device]

 According to the present invention, the endothermic pipe for bath is formed by the endothermic pipe for upper bath and the endothermic pipe for lower bath which are in communication with each other, and the endothermic pipe for hot water supply is arranged so as to be sandwiched between the upper end and the lower end. By providing a switching device on the nearby lower bath heat absorption tube to switch the usage state of the bath heat absorption tube according to the operating status of hot water supply and bath operation, the hot water heat absorption tube for the bath side alone operation It is possible to significantly improve the ability of boiling water on the bath side without overheating.

Further, in the case of the hot water supply side independent operation, since the upper bath endothermic tube is located above the hot water supply endothermic tube, that is, at a position farther than the burner, when the bath side is operated thereafter, the bath side endothermic The hot water in the pipe will not evaporate, and there will be no problems such as the circulation pump not working.

Further, the heat absorption amount of the hot water supply can be increased by closing the lower bath endothermic tube near the burner during simultaneous use.

Further, the bath heat-absorbing tube is fixed to the hot-water supplying heat-absorbing tube by brazing or the like and disposed at least in contact with each other, so that heat exchange is performed mutually and the hot-water supplying heat tube becomes overheated. Therefore, there is no danger that hot water will come out even if hot water is supplied after the bath is operated independently.

Furthermore, by disposing the bath heat-absorbing tube in a separated state with a slight gap from the hot-water supply heat-absorbing tube, the ability of the bath to operate independently and the improvement of the ability to supply hot water when used at the same time become more remarkable. You can

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the structure of a one-can, two-circuit bathtub A according to the present invention.

FIG. 2 is an explanatory view showing an arrangement state of hot water supply heat absorption pipes and bath heat absorption pipes in the bath bath A.

FIG. 3 is an explanatory view showing an arrangement state of hot water supply heat absorption tubes and bath heat absorption tubes according to another embodiment.

[Explanation of sign]

 2 Fins 3 Hot water supply heat absorption pipe 4 Bath heat absorption pipe 5 Burner 41 Upper bath heat absorption pipe 42 Lower bath heat absorption pipe a Heat exchange part b Burner part V Stop valve

Front page continuation (72) Inventor Mikio Ochi 43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo Nihon Yupro Co., Ltd. (72) Nobuhiro Tanioka 43-1, Uozakihama-cho, Higashinada-ku, Kobe, Hyogo Japan Inside Yupro Co., Ltd. (72) Inventor Junichi Ishikawa 43-1 Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo Nihon Yupro Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A heat-absorbing pipe (3) for hot water supply sharing a fin (2)
And the heat-absorbing pipe for bath (4) are installed, and the heat-exchanger (3) and the bath heat-absorbing pipe (4) are installed below the heat-exchanger (a). ) And a burner part (b) having a heating burner (5) which are shared by the above, and a one-can two-circuit bath kettle, in which the upper endothermic pipe for bath (4) is connected to each other ( 41) and the lower bath heat absorption pipe (42), and the hot water supply heat absorption pipes (3) are arranged so as to be sandwiched vertically, and the lower bath heat absorption pipe (5) is close to the burner (5). 42) is a one-can, two-circuit type bath kettle characterized by being provided with a switching means for switching the usage state of the bath heat absorption tube (4) according to the operating conditions of hot water supply and bath use. 2. The bath heat absorption pipe (4) is a heat absorption pipe for hot water supply.
The 1-can 2-circuit type bathtub according to claim 1, wherein the bath is fixed to (3) by brazing or the like and disposed at least in contact with each other. 3. The bath heat absorption pipe (4) is a heat absorption pipe for hot water supply.
The one-can-two-circuit bath cooker according to claim 1, characterized in that it is arranged in a separated state with a slight gap from (3).