JPS62108957A - Automatic hot-water supplying bath device - Google Patents

Abstract

PURPOSE:To compound the capacities of both of a tap-controlled water heater and a forced circulation bath boiler and shorten hot-water pouring time by a method wherein the tap- controlled water heater is provided in parallel to the forced circulation bath boiler and a temperature sensor as well as a water level sensor are provided on one part of a circulation inlet port pipe to effect the ON, OFF controls of a burner for supplying hot-water, a burner of bath, a circulating pump and a solenoid valve for pouring hot-water. CONSTITUTION:When an automatic operation switch is put ON under a condition that no water or hot-water is remaining in a bathtub and a hot-water delivery cock 11 is being closed, a solenoid valve 13 for pouring hot-water is opened, a water flow switch 37 detects it, a burner 25 for the tap-controlled water heater is ignited and heated hot-water is sent into the bathtub under the sequence of a hot-water pouring pipe 14, a hopper 24, a rise-up pipe 23 and a circulation outlet port pipe 22. When the water level of the bathtub has arrived immediately above a circulation inlet pipe 15, a water level sensor (2-level type) 29 detects it, the operation of a circulating pump 42 is started, a burner 26 for bath is ignited and the heating of the bath is started. Thereafter, when the pouring of hot-water is continued and a preset water level is achieved, the sensor 29 detects it, the solenoid valve 13 and the burner 25 are off and hot-water pouring is stopped automatically. When the temperature sensor 30 detects it and a set hot-water temperature is achieved, the burner for bath and the circulating pump 42 are stopped and the heating of bath may be stopped automatically.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention is applicable to the case where, when hot water heated by an instantaneous water heater is poured into a bathtub (hereinafter referred to as pouring), a certain point in the bathtub is Once the water level is detected, heating begins in the bathtub. The present invention relates to an automatic hot water bath pot with a synthetic capacity heating style, which then stops pouring water at a set water level and stops heating the bath at a set water temperature.

Conventional technology 4. Automatic hot water supply in which hot water is heated with an instantaneous water heater and dropped to the set water level in the bathtub, and then heated in a bath pot to the set water temperature when pouring hot water into the room. It has a bath kettle configuration.

Therefore, although the water is poured into an instantaneous water heater, it is not heated in a bathtub.

That is, as shown in FIG. 2, the hot water supply pipe 1 of the instantaneous water heater 2
A melt pouring pipe 14 is connected to one end of the melt pouring solenoid valve 13 at one end of the melt pouring pipe 14.
The hot water pouring pipe 14 is in open communication with a funnel 24 at the tip of a riser pipe 23 provided vertically from the circulation outlet pipe 22 of the bath pot 3. A forced circulation device includes a water level sensor 29 in the water can part 28 of the bathtub 3, and a circulation pump 42 in which a discharge pipe 40 and a suction pipe 41 are inserted in the circulation inlet and outlet pipes 22.15 in a double-tube shape. It is a configuration with. (For example, Japanese Utility Model Application Publication No. 59-133942) Problems to be Solved by the Invention In the prior art described above, when taking a bath, hot water is first poured at a certain temperature, and after the pouring is completed, the desired hot water temperature is adjusted. The structure is such that it is reheated until the temperature is reached. In this case, the sum of the time for pouring hot water and the time for reheating the bath becomes the waiting time when taking a bath, which takes a long time.

- Examples include:

<Desired intestinal temperature: 43°C1 Desired amount of hot water: 180e> (
1) Pouring temperature: 38°C Enema time t1, reheating time t2
(2) Water temperature: 5°Ct1=180/17X25/33 (
3) Pouring Noh crab No. 17 Ki 14 minutes (4) Reheating Noh crab t2= 180X (43-3a)/12
000Kcae/h×0.7 12000X0.7X1
/60km, 4 minutes t1+t2, 20.4 minutes, which means it will take more than 20 minutes.

On the other hand, to shorten the waiting time (time saving),
By combining the capabilities of an instantaneous water heater and a bath pot, the time required to pour hot water can be significantly reduced.

One example is a method in which, after the start of pouring hot water, the water level in the bathtub reaches a level directly above the circulation inlet pipe, and then the bathtub is heated by forced circulation in the bathtub.

Desired hot water temperature 43°C, desired hot water @ 180 e >The relationship between the bathtub, the circulation inlet pipe, and the circulation outlet pipe is as shown in Fig. 3. Generally speaking, if the amount of the pick is 180e, the length up to the circulation inlet pipe is approximately 70e, and the length up to the circulation outlet pipe is approximately 130e.

(1) Pouring temperature: 37℃ (2) Water temperature: 5℃ (3) Pouring Nokani No. 17 (instantaneous water heater) (4) Reheating Nokani 12,000Kcal! ! /hX0
．． 7 (Bath pot capacity) β) Pouring time t 1 t 1=1ao/17x25
/32K 13.6 minutes (6) Heating of the bath starts after approximately 70e of hot water has been poured.

(b) The remaining amount of molten metal poured up to the set amount and the molten pouring time are 180-
70=11oe 110/17x25/32 for 8.3 minutes (b) The water temperature of 37°C should be heated to 43°C in 8.3 minutes.

Approximate calculation〉 (43-37) x 180 = 1080 Kcae
12000 x 0.7 x 8.3/ 60 = 116
2 Kcae Therefore, 1162 Kcae/180
6.46℃ 3746.46℃ 43.5℃ North of the area, the pouring time is 13.6 minutes, and the set water temperature is 43℃ by the time the pouring is completed. ” can be realized and shortened.

In other words, with conventional products, the capacity of the instantaneous water heater (currently pouring capacity) has to be increased from size 17 to size 21, or the capacity of the bath kettle has been increased from 12,000Kcae/h to 15,000Kcae/h.
This is equivalent to increasing the size to /h etc.

As described above, as the intermembrane water heater becomes larger or the bathtub becomes larger, the size of the equipment becomes larger, which runs counter to the need for space saving, and there is a problem in that the cost of the equipment also increases.

The present invention does not require increasing the capacity of the instantaneous water heater (for example, 17
The capacity of the bath kettle was increased by adding the capacity of a bath kettle, which shortened the waiting time when taking a bath. Furthermore, this eliminates the need to reheat the bath after pouring water, which reduces the number of cases of reheating the bath by half, making it possible to select a circulation pump that uses a low-cost motor. be.

Means for Solving the Problems In order to solve the above problems, the present invention provides an instantaneous water heater having a hot water supply burner, a bath burner, and a funnel at the tip.
For hot water pouring, a forced circulation bath pot is installed in parallel with a circulation outlet pipe, a heat transfer tube, a circulation pump, and a circulation inlet pipe connected in this order, and is branched from the hot water supply pipe of the instantaneous water heater. A hot water pouring pipe having a solenoid valve is opened in the funnel, a temperature sensor and a water level sensor are provided in a part of the circulation inlet pipe, and the hot water supply burner, bath burner, circulation pump, and hot water pouring solenoid valve are turned on. The configuration is such that they are connected so that they can be controlled off.

Function When pouring hot water at an appropriate temperature into the bathtub, the hot water obtained from the instantaneous water heater is poured into the bathtub through the circulation outlet pipe.

In this case, one example would be to control the capacity of the instantaneous water heater using a temperature sensor, or to pour the hot water at a substantially constant temperature even if the water temperature at the tap or inlet changes. Furthermore, after hot water has started pouring into the bathtub, when the water level reaches the level directly above the circulation inlet pipe, the water level sensor (two-level type) detects this, the circulation pump starts operating, and the bath burner turns on. Heating begins. Thereafter, pouring of hot water continues, and when the set water level is reached, the water level sensor detects this, the solenoid valve for pouring hot water and the burner for hot water supply are turned off, and pouring of hot water is automatically stopped. At this stage, when the temperature sensor detects and reaches the set water temperature, the bath burner and circulation pump are turned off and bath heating is automatically stopped. As described above, the capacity of the instantaneous water heater and the capacity of the bath pot can be operated until the pouring of hot water is completed, thereby shortening the time it takes to take a bath.

Embodiment An embodiment of the present invention will be explained based on FIG. In the figures, the same parts as those in the conventional example shown in FIG. 2 are given the same numbers.

In FIG. 1, the automatic hot water supply bath pot 1 of the present invention includes an instantaneous water heater 2 and a bath pot 3'! il - complex. Instant hot water n(;
The vessel 2 is composed of a drum section 5 having a drum pipe 4, a fin vibro, and a fin block 8 having heat absorbing fins 7, and a water supply pipe 9, drum pipe 4, fin vibro, and hot water supply pipe 10 are connected to each other. And hot water pipe 1
The tip of the tap 0 branches into a tapping pipe 12 having a tapping tap 11 and a pouring pipe 14 having a pouring solenoid valve 13'ff:.

The bathtub 3 has a circulation inlet pipe 15, an inlet pipe 16, and a fin pipe 18 having fins 17 connected in this order to form a fin block 1.
9 is connected to a drum 20, and a tip outlet portion 21 of the fin pipe 18 is directly connected to a circulation outlet pipe 22.

The downstream end of the riser pipe 23 is connected to the circulation outlet pipe 22 and opens toward the bathtub. Furthermore, the end of the riser pipe 23 on the flow side is vertically connected to the instantaneous water heater 2 and the bath pot 3.
It stands up to a very high height and is equipped with a funnel 24 at the tip.

The funnel 24 is connected to the pouring pipe 23 through an opening. A water level sensor 29 and a temperature sensor 30 are provided in communication with the circulation inlet pipe 15. Furthermore, the circulation pump 42
1 is connected to the circulation inlet pipe 15, and the discharge pipe 40 is connected to the inlet pipe 16. The fuel circuit a1 connects the operating source gas solenoid valve 32 to the instantaneous water heater burner 25 via a gas proportional control valve 33 with a shutoff function, and the other to the bath kettle burner 26 via a bath kettle gas solenoid valve 34. is in contact with. Water supply circuit 35
It is connected to the water supply pipe 9 of the instantaneous water heater 2 via a water governor 36 and a water flow switch 37, and a temperature sensor 38 is provided in the water supply pipe 10 provided downstream of the fin vibro.

The present invention has the above-mentioned configuration, and its operation will now be explained. When pouring hot water at an appropriate temperature into the bathtub, when there is no remaining hot water in the bathtub and the hot water tap 11 is closed, when the automatic operation switch (not shown) is fully turned on, the electromagnetic valve 1 for pouring hot water is turned on.
3 opens, water flows from the water supply circuit 35, the water flow switch 37 detects it, the IE air controller (not shown) operates, and the operating source gas solenoid 32 and the proportional valve 33 with a closing function open. At the same time, an igniter (not shown) is activated and the instantaneous water heater burner 25 is ignited. After ignition, heat is absorbed by the heat absorbing fins 7, and a magnetic valve 13 for pouring hot water at one end of the hot water supply pipe 10,
Molten pouring pipe 14, funnel 24, riser pipe 23, circulation outlet pipe 22
Heated hot water is pumped in this order. After that, the amount of hot water in the bathtub increases gradually, and when the water level reaches a little above the circulation inlet pipe 15, the water level sensor 29 detects this, and the circulation pump 42 is driven, and the gas electromagnetic valve 34 for the bathtub opens. The igniter is activated to ignite the bath pot burner 26, which absorbs heat through the heat absorbing fins 17, passes through the outlet section 21, and sends heated positive energy through the circulation outlet pipe 22 toward the bath pot. That is, in the circulation outlet pipe 22, the molten metal pouring from the riser pipe 23 joins.

In this way, the capacity of the instantaneous water heater and the bath pot progresses while being combined by pouring hot water and reheating, and when the water in the bathtub reaches the desired amount (water level), the water level sensor 29 is activated and the water level sensor 29 is activated. The hot water solenoid valve 13 is closed, water flow through the water supply circuit 35 is stopped, and the operating source gas solenoid valve 32 is closed, so that the instantaneous water heater burner 2 is closed.
5 is extinguished, and at the same time as the solenoid valve 13 for pouring hot water is closed, the gas solenoid valve 34 for the bath kettle is closed, and the burner 26 for the bath kettle is closed.
The fire is also extinguished and the circulation pump 42 is also stopped.

In other words, just by turning on an automatic operation switch (not shown), the set amount of hot water is poured into the bathtub in a short time.

In the case of shirt hot water supply, when the tap 11 is opened, water starts flowing from the water supply circuit 35, and hot water is supplied from the hot water tap 11 in the same manner as the instantaneous water heater 2 operates when pouring hot water. . At this time, the gas proportional control valve 33 with a closing function operates so that the hot water supply temperature reaches the desired temperature by the temperature sensor 38, and controls to select either the rated capacity or the TDR capacity to supply hot water at an appropriate temperature. be able to.

Furthermore, even when the hot water tap 11 is fully opened for Java hot water supply when pouring hot water into the bathtub, the hot water supply pipe 10 is branched into the hot water pouring pipe 14 via the hot water tap pipe 12 and the solenoid valve 13 for pouring hot water. By considering the distribution, it is possible to use hot water supply and pouring water at the same time.

Further, when heating the bath, the hot water pouring solenoid valve 13 and the hot water tap 11 are closed, and when the bath operation switch (not shown) is turned on, the bath pot gas solenoid valve 34 opens, and the hot water pouring solenoid valve 13 is closed. The bath burner 25 is ignited in the same manner as before. After ignition, heat is absorbed by the heat-absorbing fins 17, the water or low-temperature hot water in the fin pipe 18 is heated, and the circulating pump 42 circulates and heats the water from the circulation outlet pipe 22 toward the bathtub.

At this time, the sequence is such that the bath burner 25 is ignited after the circulation pump 42 is activated.

As mentioned above, in the embodiment, the bath pot was described as using a forced circulation heating method in order to start heating from the water level directly above the circulation inlet pipe in order to make full use of the heating capacity of the bath while pouring water. The heating may start from the water level directly above the outlet pipe, or the natural circulation heating method may be used. However, in this case, the time required to pour water to the set water level is shorter, so the heating capacity of the bath needs to be greater than that of the forced circulation heating method.

This will be described as another example.

Effects of the invention (1) By heating the hot water in the instantaneous water heater and circulating it in the bath pot while it is being poured down to the set water level, both capacities can be utilized within the pouring time, resulting in a shorter time. You can pour hot water at a set temperature and amount.

(11) It is not a combination of an instantaneous water heater with a larger capacity and a bath pot, which increases the hot water pouring capacity, but a combination of the instantaneous water heater and a bath pot. The device size is compact and the device cost can be realized at low cost.

θ11) It is extremely convenient because just by turning on the automatic operation switch, the system automatically pours the desired amount of hot water to the point where you can take a bath in a short time.

1lv) It is a forced circulation metal bath pot, which has good thermal efficiency and when reheating the bath while taking a bath (the water level is sufficient,
When the water temperature drops), mild reheating with no difference in bottom temperature is achieved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an automatic hot water supply bath apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of a conventional example, and FIG. 3 is a sectional view of a bathtub. 1... Automatic hot water supply bath pot, 2... Instant water heater, 3... Bath pot, 10... Hot water supply pipe, 13...・Solenoid valve for pouring molten metal, 14...Pouring pipe, 15...Circulation inlet pipe, 17...
Endothermic fin, 18...Fin pipe, 22...
...Circulation outlet pipe, 23...Rise pipe, 25
...1 Shun water heater burner, 26...
Burner for bathtub, 29...Water level sensor, 30.
...Temperature sensor, 42...Circulation pump. Name of agent: Patent attorney Toshio Nakao and 1 other person 2q
−11 water level 7 length

Claims (1)

[Claims] an instantaneous water heater having a hot water supply burner; a circulation outlet pipe having a bath burner and communicating with a riser pipe having a funnel at the tip;
Forced circulation bath pots in which a heat transfer pipe, a circulation pump, and a circulation inlet pipe are connected in this order are installed in parallel, and a hot water pouring pipe having a solenoid valve for hot water pouring is branched from the hot water supply pipe of the instantaneous water heater and opened into the funnel. ,
An automatic hot water bath device that includes a temperature sensor and a water level sensor in a part of the circulation inlet pipe, and controls on/off the hot water supply burner, bath burner, circulation pump, and hot water pouring solenoid valve.