JPH02275248A - Hot water feeder with bath boiler - Google Patents

Abstract

PURPOSE:To enable a hot water level in a bathtub to be stably detected at all times without being affected by condensed dew droplets by using two connecting pipes provided between a circulation device and a hot water level detector for the connection of each other, the first connecting pipe being made of a heat insulating material such as rubber and being set in a rising gradient manner toward the hot water level detector, while the second connecting pipe being connected to the first connecting pipe by an elbow or the like and being installed upright. CONSTITUTION:A first connecting pipe 26 is connected to a connection port 38 of a circulation device 23, said pipe 26 being made of a heat insulating material such as rubber and the inner diameter thereof being formed into a diameter that allows dew droplets to run down. The length l of the connecting pipe 26 that is cooled by the external air is set to such a length that moisture in the connecting pipe 26 can be formed into condensed dew droplets, and the connecting pipe 26 is arranged and fixed to the circulation device 23 in such a manner as to form a rising gradient therefrom. An elbow 27 is connected to the top end of the connecting pipe 26, and a hot water level detector 25 and the elbow 27 are connected to each other by a second connecting pipe 28 installed upright therebetween. Since the connecting pipe 26 is slantingly provided for the purpose of a dew droplets forming zone, condensed dew droplets do not stay in the connecting pipe 26, and furthermore, since it is made of a heat insulating material, heat transfer is prevented, so that the temperature in the connecting pipe 28 becomes almost equal to that of the external air, thereby preventing dew droplets from being formed therein.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water heater with a bathtub, which has a function of supplying hot water to a bathtub and a function of reheating the water in the bathtub.

2. Description of the Related Art Conventionally, this type of water heater with a bathtub has a circulation device as shown in FIG. 4, which communicates a water heater body having a hot water supply means and a reheating means, and a bathtub with the water supply body. 23, a connecting pipe 29, and a water level detector 25, and the connecting pipe 29 is one rubber hose.

The configuration was such that the circulation device 23 and the water level detector 25 were connected through a steel pipe or the like during installation work.

Problems to be Solved by the Invention However, in the above configuration, the circulation device 23 is attached to the wall of the bathtub 24, and the water level detector 25 is attached to the wall of the house, so that the heat and moisture generated by the hot water in the bathtub in the circulation device 23 is , heat is transferred inside the connecting pipe 29, and the connecting pipe 29 is filled with water. At this time, the connecting pipe 29 is cooled by the outside air, so the inside of the connecting pipe 29 becomes dew condensed, and the water droplets clog the connecting pipe 29, causing the water level detector. There was an issue with the system malfunctioning.

In addition, there are cases where a single connecting pipe 29 cannot be installed in a straight line and is inevitably bent. In this case, the pipe becomes U-shaped, causing a puddle of condensed water, which causes problems with the water level detection settings. there were.

The present invention solves the above problems and provides a water heater with a bathtub that can always stably detect the bathtub water level without causing the water level detector to malfunction during reheating.

Means for Solving the Problems The water heater with a bath pot of the present invention for solving the problems described above has the following features:
Two connecting pipes are used to connect the circulation system to the water level detector, and the first connecting pipe is made of a heat insulating material such as rubber, has a diameter large enough to allow water droplets to flow through it, and has a diameter facing toward the water level detector. It slopes upwards towards the outside (the side opposite the bathtub).

The second connecting pipe is connected to the first connecting pipe by an elbow or the like and is installed facing upward. The pipe diameter may be a thin tube that matches the characteristics of the water level detector.

In this way, the pipes are connected using two different connecting pipes.

Effects With the above configuration, when reheating or filling hot water, condensation water may accumulate in the connecting pipe, or water may accumulate in the U-shaped piping due to incorrect piping settings during installation work, causing malfunctions in water level detection in the bathtub. prevent

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

In FIG. 2, reference numeral 11 denotes a water heater body comprising a hot water supply means and a reheating means, including a burner 12, a can body 13, and a heat exchanger 1.
4, and the can body 13 has a water supply pipe 15. Hot water pipe 16° hot water mixing valve]7. An edge cutting device 18 is attached.

The heat exchanger 14 has a return pipe 19. Circulation pump 20. An outgoing pipe 21 is attached, and the edge cutting device 18 and the outgoing pipe 21 can be switched in a waterway manner by a three-way valve 22. Reference numeral 23 denotes a circulation device that communicates the water heater main body 11 with the bathtub 24 and allows hot water to flow in and out of the bathtub 24. 25
is the water level detector and is the connection pipe A that connects to the circulation system 23 side.
26 and a connecting pipe 828 connected to the water level detector 25 side.
．． It communicates with the circulation device 23 through an elbow 27 that joints the connecting pipe A26 and the connecting pipe B28.

FIG. 3 is an enlarged sectional view of a main part of the circulation device 23.

The circulation device 23 has an inlet pipe 31 and a filter 32, and an outlet pipe 34 with an open tip is formed at the upper side of the outlet space 33. 36 is an air reservoir space provided on the side of the outlet space 33, and a connecting pipe A is provided above.
26. Elbow 27. It has a connection port 38 for communicating with the water level detector 25 via a connection pipe 828.

FIG. 1 is a piping diagram from the circulation device 23 to the water level detector 25. The WJ ring device 23 is attached to the wall of the bath+ff24, and the first connection pipe A2 is connected to the connection port 38 of the circulation device 23.
6 is connected. The connecting pipe A26 is made of a heat insulating material such as rubber, and has an inner diameter that allows water droplets to flow. In addition, the length β is such that the connecting pipe A26 is cooled by outside air.
The length is set to allow moisture in the connecting pipe A26 to condense. Connection pipe A26 set as above
The pipe is fixed upwardly from the circulation device 23.

An elbow 27 is connected to the tip of the connecting pipe A26, and a second connecting pipe B28 connects the elbow 27 and the water level detector 25 attached to the upper part of the wall surface upward.

The connecting pipe 828 may be a thin tube depending on the characteristics of the water level detector 25, and its material is not particularly limited.

Next, the operation in this embodiment will be explained.

When hot water is supplied to the bathtub 24, the hot water boiled by the burner 12 is mixed with water at the hot water mixing valve I7 to an appropriate temperature, and the water is passed through the edge cutting device 18→three-way valve 22→circulation pump 20→outgoing pipe 21-+circulation. The water passes through the outlet pipe 34 of the device 23 and then the discharge section 35 and is supplied into the bathtub 24. The hot water in the bathtub 24 is simultaneously converted into air pressure that pushes up the air in the connecting pipe 828 of the connecting pipe A26. In this way, when the amount of hot water (water level) in the bathtub 24 reaches a predetermined value, the connecting pipe A2
6. Water level detector 25 via air pressure of connecting pipe 828
is detected and this hot water supply operation is stopped.

Also, when you take a bath and use the hot water in the bathtub 24, and the water level in the bathtub 24 drops, the water pressure will decrease, so the connection pipe A26. The air pressure in the connecting pipe 828 becomes smaller, which is detected by the water level detector 25, and the hot water supply operation starts again.

Normally, when the circulation device 23 and the water level detector 25 are connected through one connecting pipe 29, the air inside the connecting pipe 29 contains the moisture and humidity of the bathtub water, so dew condensation is likely to occur. As the water inside the connecting pipe 29 gradually increases or accumulates, correct water level detection becomes impossible.

However, in this case the two connecting pipes A2
The purpose of the connecting pipe B28 is shared by the six connecting pipes B28.The connecting pipe A26 is for the condensation area and has an inner diameter that allows the condensed water to return to the bathtub 24.Since it is installed with a slope, the condensed water does not accumulate. Because it is a thermal insulator, the temperature of the bathtub water is not transferred to the connecting pipe 828, and the connecting pipe B28
is close to the outside temperature and there is no condensation.

Therefore, if the connecting pipe 82B is formed of a thin tube that matches the characteristics of the water level detector 25, stable water level detection can be performed without being affected by dew condensation.

Effects of the Invention As is clear from the description of the embodiments above, the water heater with a bathtub of the present invention uses two types of pipes, connecting pipe A and connecting pipe B, to connect the circulation device and the water level detector. Connecting pipe A is for the dew condensation area, is made of heat insulating material such as rubber, and has an inner diameter that allows condensed water to move when condensation occurs inside connecting pipe A.
Also, install it with a slope so that condensed water returns to the bathtub, and connecting pipe B is a thin tube that matches the characteristics of the water level detector and is piped upward from connecting pipe A to the water level detector via an elbow. With this configuration, piping without walnuts is possible, and the bathtub water level can always be detected stably without being affected by condensation water, such as condensation water accumulating or accumulating in the connecting vibrators A and B. can.

[Brief explanation of drawings]

Fig. 1 is a piping diagram from the circulation system to the water level detector of a water heater with a bath kettle showing an embodiment of the present invention, Fig. 2 is a system diagram of the water heater with a bath kettle, and Fig. 3 is a diagram of the water heater with a bath kettle. A.1 A sectional view of the main parts of the circulation device of the water heater, and FIG. 4 is a piping diagram from the circulation device of the conventional water heater with bathtub to the water level detector. 11...Water heater body, 23...Circulation device, 24...Bathtub, 25...Water level detector, 26...Connection pipe A.27...
Elbow, 28... Connection pipe B, 29...
... Connection part, 31 ... Inlet pipe, 32 ...
・Filter, 33...Exit space, 34...
...Exit pipe, 35...Discharge part, 36...
...Air storage space. Name of agent: Patent attorney Shigetaka Awano 1 person 23'-Circulation 9 & 1 24- Bath J row Zγ-2 report 11- Water heater body 23--Issei 1 interpretation 1 24- Water paddle 25-Water level detection Tai 2 Otsu - 1 O trunk killing high live #A 27 - ... engineering J reho 28 - - 5 Nephew high live β 3rd figure Z cow - 5 valley 1 3 no artificial pipe 32 - filter A - - -Tomoebe Masuko 34- Shichiguchikan 3Q --11JI U section

Claims (1)

[Claims] A water heater main body having a hot water supply means and a reheating means, a circulation device that communicates the water heater main body and a bathtub and circulates hot water to and from the bathtub, and a water level detection that detects the water level of the bathtub via the circulation device. The connecting pipe that connects the circulation device and the water level detector has a downward slope from the water level detector to the circulation device, and the vicinity of the circulation device mounting area is a dew condensation area, and is covered with heat insulating material such as a rubber hose. A water heater with a bath kettle with a larger pipe diameter.