JP2000097492A - Forced circulation type bath boiler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forced circulation type bath boiler capable of handily injecting residual hot water into a washing machine along with less burden on workers by eliminating the need for preparing an exclusive device separately. SOLUTION: In this bath boiler wherein a hot water supply circuit 13a and a reheating circuit 13b are arranged respectively having heat exchangers (hot water supply heat exchanger 2 and reheating heat exchanger 3), the outlet side of the heat exchanger (hot water heat exchanger 2) of the hot water supply circuit 13a is branched into two parts and one outlet thus branched is connected to the reheating circuit 13b through a two-way valve 12 to form a hot water filling path 40 to a bathtub while a forced circulation means (circulation pump 7) is installed in the course of the reheating circuit 13b to forcibly circulate water in a bathtub, an outgoing waterway 23a of the reheating circuit 13b is provided with a water injection waterway 41 to a washing machine and a water closure valve 24 is installed on the downstream side from a branch point between the water injection waterway 41 and the outgoing waterway 23a or a branch point of the outgoing waterway 23a. This enables proper selection of reheating of the water in the bathtub or the injection of water into the washing machine with the water closure valve 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced circulation bathtub having a function of pouring remaining hot water in a bathtub into a washing machine.

[0002]

2. Description of the Related Art Utilizing remaining hot water in a bathtub (hereinafter referred to as remaining hot water) as washing water reduces expenses at each home,
This has been done mainly by housewives from the perspective of saving money, and in recent years it has been spreading to younger people from the viewpoint of effective use of water resources.

[0003] In order to use the remaining hot water as washing water, it is common practice to pump the water from a container such as a bucket or to inject water into a washing machine using a dedicated small pump. When a forced circulation type is used, a rubber hose is inserted into the circulation port of the bathtub, and the remaining hot water is forcedly circulated so that water is injected into the washing machine.

[0004]

However, the work using the container has a problem that the burden on the worker is large. In addition, when a small pump is used, it is necessary to prepare a dedicated small pump and to prepare a place for storing wet instruments after use, although the burden is light. Furthermore,
The use of rubber hoses requires a hand in the bathtub each time water is injected, which is not a desirable operation in winter or when the remaining hot water is cold water.

[0005] The present invention has been made in view of the above-mentioned problems, and allows the remaining hot water to be easily poured into a washing machine without a burden on an operator and without separately preparing special appliances. The purpose is to provide a forced circulation bath kettle.

[0006]

According to a first aspect of the present invention, as shown in FIG. 1, a hot water supply circuit 13a and a hot water supply circuit 13a each having a heat exchanger (a hot water supply heat exchanger 2 and a supplementary heat exchanger 3) are provided. Reheating circuit 1
3b, the outlet side of the heat exchanger (hot water supply heat exchanger 2) of the hot water supply circuit 13a is branched into two, and one of the branched outlets is connected to the additional heating circuit 13b via the two-way valve 12. In the bath kettle provided with a hot water passage 40 to the bathtub and a forced circulation means (circulation pump 7) for forcibly circulating bathtub water in the middle of the reheating circuit 13b, the reheating circuit 1
3b, a water injection channel 41 for the washing machine is provided in the outgoing water channel 23a, and a branch point between the water injection channel 41 and the outgoing water channel 23a;
Alternatively, a water shut-off valve 24 is installed downstream of the branch point of the outgoing water channel 23a, and the water shut-off valve 24 enables the reheating of the bathtub water or the injection of water into the washing machine to be appropriately selected. I do.

A second aspect of the present invention is to provide a hot water temperature detecting temperature sensor 15 in the additional heating circuit 13b.
5 is lower than the predetermined temperature, and
When water injection into the washing machine is selected, the heat exchanger (additional heat exchanger 3) is activated to heat the water injected into the washing machine to a predetermined temperature or higher. I do.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hot water supply circuit 13a used in the present invention
Is for warming the tap water which enters from the water supply port 18 by the hot water supply heat exchanger 2 and pouring it into the bathtub. The hot water supply circuit 13 a branches in two directions after passing through the hot water supply heat exchanger 2, and one of the two branches via a two-way valve 12, a reheating circuit 13 described later.
b, and the other is connected to a hot water tap 11 to supply hot water from a shower head or a curran.

The reheating circuit 13b used in the present invention is a circuit for mainly heating water or hot water in the bathtub to a desired temperature using the reheating heat exchanger 3, and the hot water is supplied from the bath to the bathtub. And a return water passage 23b for advancing water or hot water from the bathtub to the bath kettle. The return water passage 23b is provided with a forced circulation means for forcibly circulating bath water, and the circulation pump 7 can be suitably used as the forced circulation means. The location of the circulation pump 7 is as follows:
The temperature is not particularly limited as long as it is within the range, but it is preferable immediately before the water enters the additional heat exchanger 3 (return water channel 23b) because the water temperature is low and the load on the pump is small.

The water injection channel 41 used in the present invention is a water channel branched from the outgoing water channel 23a, and the water can be selectively injected into the washing machine by opening and closing the water shutoff valve 24. As the water shutoff valve 24, a three-way valve can be suitably used as long as it is provided at a branch point between the water injection channel 41 and the outgoing channel 23a, and is provided in the outgoing channel 23a downstream of the branch point. In this case, an on-off valve can be suitably used. At the end opposite to the branch point of the water injection channel 41, as shown in FIG. 2, a water injection hose connection plug 26 provided with a water stopping means such as a closing ball 29 is installed.
When water is injected into the washing machine, as shown in FIG. 3, a water injection hose fitting is fitted to the water injection hose connection plug 26,
Use after releasing the water stopping means.

Hot water temperature detecting temperature sensor 15 used in the present invention
Can suitably use a thermistor whose resistance value remarkably changes with a temperature change. The thermistor is
More specifically, it is made of a semiconductor in which oxides such as iron, nickel, manganese, and cobalt are appropriately mixed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing an embodiment of a forced circulation bath kettle according to the present invention. In an outer case 8, a hot water supply heat exchanger 2, a re-heating heat exchanger 3, and a forced circulation bath And a controller 6 for controlling the shuttle in accordance with an instruction from the remote controller 31.

The hot water supply heat exchanger 2 has a hot water supply circuit 13a.
The hot water supply circuit 13a is connected to a water supply port 18 at one end of which tap water is supplied, and the other end (after passing through the hot water supply heat exchanger 2) is branched in two directions. One of them is connected to the hot water tap 11, and the other is a hot water filling passage 40, which is connected to the reheating circuit 13 b via the two-way valve 12.

The reheating unit 3 includes a reheating circuit 13b.
The reheating circuit 13b is provided with an outgoing waterway 23a.
And a return water channel 23b. The outgoing waterway 23
A water supply channel 41 is branched and provided at a, and a water supply hose connection plug 26 is fitted to the tip of the water supply channel 41. The water supply to the water injection channel 41 is selected based on the outgoing water channel 23 downstream of the junction between the water injection channel 41 and the outgoing channel 23a.
a by opening and closing a water shutoff valve 24 provided on the shaft 2.
7 is indirectly rotated to switch the water shutoff valve 24.

The remote controller 31 is provided with a hot water supply switch 42 for starting hot water supply, a reheating switch 36 for starting reheating, and a water supply switch 35 for starting water injection to the washing machine. By pressing a switch in accordance with the work, an instruction is transmitted to the controller 6 to control the operation of the forced circulation bath kettle.

The operation control of the forced circulation bath kettle of the present invention will be individually described below. First, the hot water supply operation will be described. The hot water supply operation is started when the user presses the hot water supply switch 42 of the remote controller 31, and the controller 6 opens the water supply port 18 to supply tap water to the hot water supply circuit 13a.
Water. When the controller 6 confirms the inflow of tap water with the water amount sensor 9, the controller opens the gas solenoid valve 5 to introduce gas from the gas connection port 20, and heats the tap water with the hot water supply heat exchanger 2. . The hot water heated by the hot water supply heat exchanger 2 passes through the hot water filling passage 40, and flows from the two-way valve 12 that has been opened according to an instruction from the controller 6.
It is filled with hot water through the bathtub. The hot water supply operation is stopped when the controller 6 determines that the filling of the amount desired by the user has been completed based on the information from the water amount sensor 9, and closes the gas electromagnetic valve 5 to exchange the hot water supply heat. After stopping the container 2, the water supply port 18 is closed to complete the operation.

Next, the reheating operation will be described. The reheating operation is started when the user presses the reheating switch 36 of the remote controller 31, the controller 6 closes the two-way valve 12 and the circulation pump 7. To start. Circulation pump 7
Starts, and when the water flow switch 14 detects that the remaining hot water is circulating, the controller 6 operates the additional heating heat exchanger 3 to heat the remaining hot water. The temperature of the remaining hot water to be heated is constantly monitored by a hot water temperature detection temperature sensor 15 provided in the return water passage 23b, and when the hot water temperature desired by the user is reached, the controller 6 causes the reheating heat exchanger 3 to operate.
Is stopped, the operation of the circulation pump 7 is terminated.
When performing the reheating operation, as shown in FIG. 2, it is necessary to rotate the switching knob 28 to open the water shutoff valve 24, and if the water shutoff valve 24 is closed, Fire operation cannot be performed. However, the hot water passing through the outgoing water channel 23a
Although the water enters the water injection channel 41, the water is not blocked by the closing ball 29 and injected into the washing machine.

Lastly, the water injection operation will be described. In the water injection operation, as shown in FIG. 3, the switching knob 28 is rotated to close the water shutoff valve 24, and the water injection hose fitting 30 is fitted to the water injection hose connection plug 26. After the adjustment, the operation is started by pressing the water injection switch 35 of the remote controller 31 shown in FIG. As shown in FIG. 1, when instructed to perform the water injection operation, the controller 6 closes the two-way valve 12, starts the circulation pump 7, sucks up bath water using the return water passage 23b, and uses the outgoing water passage 23a. Then, water is injected into the water injection channel 41 to inject water into the washing machine.

During the water injection operation, the additional heat exchanger 3 is not normally operated. However, if the user wants to wash with warm water in winter or the like, the remote controller 31 injects water beforehand. By setting the temperature, the reheating heat exchanger 3
, And hot water can be injected into the washing machine. In such a hot water pouring operation, the controller 6 compares the water pouring temperature preset by the user with the pouring temperature detected by the hot water temperature detecting temperature sensor 15, and when the pouring temperature is lower than the set temperature. The additional heat exchanger 3 is operated to enable washing with warm water that is easy to remove dirt throughout the year, not only in winter.

[0020]

As described above, according to the present invention, the water circulation valve using a bucket or the like is provided by providing the water shutoff valve and the water injection channel in the forced circulation bath kettle used in ordinary households. It is possible to provide a forced-circulation bath kettle capable of performing water injection to a washing machine without a burden of watering and without requiring a dedicated small pump or the like. Furthermore, in the forced-circulation bath kettle of the present invention, by using a refired heat exchanger that is originally used only for reheating, also used for pouring water into the washing machine,
It is possible to pour warm water at the temperature desired by the user into the washing machine throughout the year, without limiting to winter, and to wash with warm water with good dirt removal without washing with cold water. it can. In addition, there is no need to reach into the bathtub during water injection, and the user does not get wet accidentally.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a forced circulation bath kettle of the present invention.

FIG. 2 is an enlarged sectional view around a water shutoff valve, which is a main part of the present invention.

FIG. 3 is an enlarged cross-sectional view of a state where the water shut-off valve shown in FIG. 2 is closed.

[Explanation of symbols]

 1. Combustion section 2. Hot water supply heat exchanger 3. Refired heat exchanger 5. Gas solenoid valve 6. Controller 7. Circulation pump 8. Outer case 9. Water volume sensor 10. Temperature sensor 11. Hot water tap 12. Two-way valve 13a. Hot water supply circuit 13b. Reheating circuit 14. Water flow switch 15. Hot water temperature detection temperature sensor 18. Water inlet 19. Hot water supply 20. Gas connection port 21. Outbound entrance 22. Return port 23a. Outgoing waterway 23b. Return channel 24. Water shutoff valve 25. Faucet counter 26. Water injection hose connection plug 27. Shaft 28. Switching knob 29. Closing ball 30. Water injection hose fitting 31. Remote control 32. Nail part 35. Water injection switch 36. Refire switch 40. Hot water passage 41. Water injection channel 42. Hot water switch

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenji Nakamura 1250 Shimoedori, Shimodate-shi, Ibaraki F-term in the Yuki Plant of Hitachi Chemical Co., Ltd.

Claims (2)

[Claims] A hot water supply circuit and a reheating circuit each having a heat exchanger are provided, and an outlet side of the heat exchanger of the hot water supply circuit is branched into two, and one of the branched outlets is connected to a two-way valve. A bath path connected to the reheating circuit through the bath and provided with a forced circulation means for forcibly circulating bath water in the middle of the reheating circuit; A water injection channel to the washing machine is provided at a branch point of the water injection channel and the outgoing water channel, or a water shutoff valve is installed downstream of the branch point of the outgoing waterway, and bathtub water is provided by the water shutoff valve. A forced circulation bath kettle characterized in that reheating or water injection into a washing machine can be appropriately selected. 2. A hot water temperature detection temperature sensor is provided in the additional heating circuit,
If the temperature detected by the hot water temperature detection temperature sensor is lower than a predetermined temperature, and when water injection into the washing machine is selected, the heat exchanger is operated to change the temperature of the water injected into the washing machine. The forced circulation bath kettle according to claim 1, wherein the bath is heated to a predetermined temperature or higher.