JPH0239177Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a bath kettle.

Many conventional bathtubs connect the heat exchanger of the pot and the bathtub with two circulation pipes, one above the other, allowing the bathtub water to circulate naturally between the heat exchanger and the bathtub.

In such natural circulation type bathtubs, the hot water that rises during boiling accumulates at the top of the bathtub, and the lower part has lower temperature water, which not only has poor thermal efficiency, but also requires stirring by hand in order to take a bath. There is the inconvenience of having to check whether the water temperature is appropriate.

Therefore, as a solution to the above-mentioned drawbacks of the natural circulation type, there is a type that attaches a pump to the circulation pipe and forcibly circulates water between the bathtub and the heat exchanger.However, with this type, if the pump fails, Since the bath cannot be used unless the pump is removed from the piping and repaired or replaced, a system has been devised in which a bypass line is connected to the circulation pipe and a pump is attached to the bypass line for circulation.
Circulation is mainly carried out through a path connecting the pump and the heat exchanger of the pot, which has the problem that not only is the hot water in the bathtub not stirred uniformly, but also that the circulating water tends to rise, causing the pot to rumble.

The object of the present invention is to solve these problems and to enable good circulation of bath water and uniform stirring.

The basic configuration of the present invention is that the opening on the circulation pipe side of the branch part that connects the upper and lower circulation pipes and the bypass pipe, which has a smaller diameter than the above pipe and has a pump installed in the middle, has a diameter that is approximately the same as that of the bypass pipe. By connecting respective conduits that are formed and whose ends extend within the circulation pipe to the vicinity of the bathtub side opening,
This enables good circulation and agitation of bath water.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In this embodiment, as shown in FIG. 2, a branch part 6 is provided in a rubber expansion joint pipe 5 that connects the upper and lower circulation pipes 1 and 2 to the outlet pipe 3 and inlet pipe 4 of the heat exchanger of the pot A, respectively. It is something that

That is, one end of the upper and lower circulation pipes 1 and 2 is connected to the outlet pipe 3 and the inlet pipe 4, respectively, via the expansion joint pipe 5, and the other end is connected to the bathtub B, respectively.

The expansion joint pipe 5 has a plurality of protrusions 7 that protrude outward in the shape of a mountain on the circumferential surface to make it expandable and contractible in the axial direction, and a part of the flow path is divided and branched in the middle. The portion 6 is integrally formed.

The branch part 6 is formed in a cylindrical shape, with one end protruding in a direction perpendicular to the axial direction of the expansion joint pipe 5, and the other end bent and opened toward the bathtub B side, and one end of the outer periphery is connected to the expansion joint pipe 5. A connecting pipe 10 and a conduit 11 having a smaller diameter than the circulation pipes 1 and 2 are connected to both openings 8 and 9, respectively.

The connecting pipe 10 is connected to the upper and lower circulation pipes 1 and 2 via the branch part 6, and its ends are connected to a pump 13 and a strainer 14, and a connecting pipe 12 is connected between the pump 13 and the strainer 14. are connected to form bypass piping a.

The pump 13 first forces the water in the bypass pipe a to circulate the water in the heat exchangers of the bathtub B and the pot A, and is connected to a power source via a controller 15 installed at a desired location. .

The controller 15 is configured to stop the operation of the burner (not shown) of the heat exchanger of the pot A based on a sensing signal from a temperature sensor, which will be described later.

Although not shown, the pump 13 is provided with a heater whose outer periphery is covered with a heat-retaining material at an appropriate position inside the casing 16. When the pump 13 is not in use, the heater is energized to generate heat, thereby preventing the pump from freezing. I've learned not to.

The strainer 14 is a filter disposed upstream of the pump 13, and is designed to remove limescale, dirt, hair, etc. mixed into the bathtub water by passing the bathwater through it.

Furthermore, a temperature sensor 17 is installed in the connecting pipe 5 located on the upper side, and is inserted into the branch part 6 through the upper part. or below, a sensing signal is transmitted, and the signal is transmitted via the controller 15 to stop or start the burner of the heat exchanger to maintain the bath water at the set temperature.

On the other hand, the conduit 11 is formed to have approximately the same diameter as the connecting pipe 10 and is placed in the upper and lower circulation pipes 1 and 2, respectively, and their tips extend to the vicinity of the openings of the circulation pipes 1 and 2 on the bathtub B side. It is extending.

To install such a pot-equipped bath, first, the expansion joint pipes 5 are attached to the outlet pipe 3 and the inlet pipe 4 of the heat exchanger of the pot A, and the expansion joint pipes 5 are formed at the branch parts 6, 6 of these two pipes 5, 5. By connecting the conduits 11, 11 to the openings 9, 9, and connecting the upper and lower circulation pipes 1, 2 to both expansion joint pipes 5, 5, respectively, so as to cover the outer circumferences thereof, the pot A and the bathtub B are connected. Concatenate.

Next, openings 8, 8 formed in both branch parts 6, 6
The bypass piping a connected to the pump 13 and the strainer 14 are combined into one unit, and both the upper and lower connecting pipes 10 and 10 are connected to the piping stopper 18, and the pump 13 and the strainer 14 are assembled into a cover case 19 and connected to the respective pots. Fix it to the side of case 20 of A.

Therefore, the outlet pipe 3 formed in the heat exchanger of pot A
Also, for conventional bathtubs in which the inlet pipe 4 and the two upper and lower circulation pipes 1 and 2 are simply connected by a simple cylindrical joint pipe, the expansion joint pipe having the branch portion 6 of the present invention can be used instead of the joint pipe. 5 and attaching the conduits 11, 11, circulation pipes 1, 2, and bypass piping a, the bathtub of the present invention can be easily improved.

Since the present invention has the above configuration, it has the following advantages.

Both branch parts are connected by bypass piping, and a pump is disposed in the middle of this bypass piping, and the circulation pipe side opening of the branch part is opened toward the bathtub side, and the opening is formed to have approximately the same diameter as the bypass piping. Since the ends of the pipes are connected to each other and extend inside the circulation pipes to the vicinity of the opening on the bathtub side, the bathtub water can be circulated and stirred forcibly and well, and the temperature of the water is made uniform. Therefore, there is no need to stir the water by hand when taking a bath.

The tip of the conduit extends to the vicinity of the opening on the bathtub side of the circulation pipe and faces into the bathtub, so most of the water sucked into the conduit in the circulation pipe at the lower end (circulation outbound side) by the suction operation of the pump is directly drawn into the bathtub. Since the amount of water sucked from inside the circulation pipe and into the conduit is small, there is a risk that the water in the circulation pipe will be sucked into the conduit and the flow of water to the heat exchanger via the circulation pipe will be obstructed. There is no risk of boiling or kettle noise in the heat exchanger, and the circulation flow through the heat exchanger is good.

The tip of the conduit extends to the vicinity of the opening on the bathtub side of the circulation pipe and faces into the bathtub, so if you attach a jetting device, bubble generator, etc. to the tip of the conduit in the upper circulation pipe (circulation return side), you can control the return hot water. Ejecting and blowing out bubbles can be effectively performed.

Forced circulation of the bathtub water through the bypass piping is performed by operating the pump installed in the piping, so
It is possible to circulate the flow regardless of whether the pot is burning or not, and by providing a strainer or a sterilizer in the middle of the bypass piping, the bath water can be filtered and sterilized indefinitely. In addition, by installing a temperature sensor, the accurate temperature of the bathtub water can be detected, so it is easy to control the combustion of the pot on and off based on that temperature and maintain the bathtub water at a predetermined temperature. can.

A branch is provided in the expansion pipe that connects the circulation pipe to the outlet pipe and inlet pipe of the heat exchanger of the pot, and these branch parts are connected to each other by bypass piping, so the pipe connection work can be done at a location away from the wall. I can,
Easy to work with.

Since the temperature sensor is installed inside the branch part of the connecting pipe, it is possible to detect the temperature of the circulating hot water even when the pot is not fired. Accurate temperature control is possible by detecting the average temperature of

Since a branch part is provided in the expansion joint pipe and a temperature sensor is installed inside the branch part, installation and assembly work is easy.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a temperature-regulating device for a bathtub, showing an embodiment of the present invention, as seen from the bathtub side, and Figs. 2 and 3 are cross-sectional views taken along lines - and - in Fig. 1. It is. A... Pot, B... Bathtub, a... Bypass piping,
1, 2... Circulation pipe, 3... Outlet pipe of the heat exchanger, 4... Inlet pipe of the heat exchanger, 5... Expansion joint pipe,
6... Branch, 9... Opening, 11... Conduit, 13
...Pump, 17...Temperature sensor.

Claims (1)

[Scope of utility model registration request] Each expansion joint pipe connects the two upper and lower circulation pipes that connect the kettle heat exchanger and the bathtub to the outlet pipe and inlet pipe of the kettle heat exchanger, respectively, with one end perpendicular to the axial direction of the joint pipe. The joint pipes each form a branch part that protrudes outward and the other end opens toward the bathtub side within the joint pipe, and bath water is contained inside the branch part of the joint pipe that connects the heat exchanger outlet pipe and the upper circulation pipe. A temperature sensor is provided for temperature control of the joint pipe, and the ends of the joint pipe of each branch that protrude outward are connected to each other by a bypass piping having a diameter smaller than the circulation pipe with a pump in the middle, and the end that opens into the joint pipe. A temperature constant device for a bathtub, which is formed by connecting conduit pipes formed to have approximately the same diameter as the bypass piping and whose ends extend inside the circulation pipe to the vicinity of the bathtub side opening thereof.