JPS60202253A - Hot water supplying apparatus for bath - Google Patents

Abstract

PURPOSE:To make it possible to obtain a large amount of high temperature water and to drop the same into bathtub in a short period of time by enabling the dropping of hot water into the bathtub with a large capacity indicative of the input of the instantaneous water heater plus the input of the input of a bath heater. CONSTITUTION:Between an outgoing pipe 15 and a return pipe 11 connecting a circulating pump 14 to a bathtub 12, is provided a bypass pipe 22 having an electromagnetic valve 21. The tip end of a hot water outlet pipe 19 is connected to an inlet side 13 between a check valve 20 and a heat exchanger 9 for bath. Further, a water quantity sensor 23 is provided between an electromagnetic valve 16 and a vacuum break valve 17. A return pipe 20 and an outgoing pipe 24 is a circuit for circulation, and has a diameter which is smaller than that of a hot water feed pipe 6. Further, the composite type hot water feeder is installed at a position higher than that of the bathtub 12. As a result, the dropping of hot water into the bathtub can be performed with a large capacity indicative of the input of the instantaneous water heater 1 plus the input of a bath heater 7, and hence hot water can be supplied with a large capacity.

Description

[Detailed description of the invention] Industrial field of use A water heater that combines an instant water heater and a forced circulation bath pot, in which hot water obtained by the instant water heater is heated by the heat exchanger of the bath pot. The present invention relates to a hot water supply bath device that can pour high-temperature hot water at a large capacity and at a large flow rate into a bathtub through a circulation circuit.

Conventional structure and its problems Conventionally, this type of combined water heater has a structure that performs a hot water supply function and a bath reheating function, and a typical example is shown in FIG. The instantaneous water heater 1 includes an instantaneous water heater burner 2 and an instantaneous water heater heat exchanger 3.
The tip of the outlet side 4 of the instantaneous water heater heat exchanger 3 is connected to the hot water taps 6a, sb through hot water supply pipes ea, eb. Next, the bathtub 7 consists of a bathtub burner 8 and a bathtub heat exchanger 9, and the outlet side 1o of the bathtub heat exchanger 9 is connected to the bathtub 12 via an outgoing pipe 11, and the inlet side A forced circulation pump 14 is installed in the bathtub 1 through a return pipe 16.
I am in contact with 2. A combined water heater with this configuration can perform the functions of an instantaneous water heater and a bath pot at the same time, and because it uses forced circulation heating to reheat the bath, the appliance can be installed in a location away from the bathtub (installation free). Although it has the following characteristics, it has the following drawbacks.

When pouring an appropriate amount of hot water obtained from an instantaneous water heater into the bathtub, the hot water is poured into the bathtub from the hot water tap 6b near the bathtub with the lid of the bathtub open, resulting in a large loss of heat radiation and making it difficult to save energy. There wasn't. In addition, when the lid of the bathtub is closed, a large amount of high-temperature water obtained from the instantaneous water heater is automatically poured into the bathtub, and when the appropriate amount of hot water is poured into the bathtub, it is automatically heated. However, there are drawbacks to instantaneous water heaters such as the inability to stop them.

Purpose of the Invention The purpose of the present invention is (1) to be able to pour hot water of an appropriate temperature obtained from an instantaneous water heater into the bathtub with the lid closed;
(11) Enlarging the dropping capacity, (iti)
(IV) Hot water can be poured into the bathtub through the forced circulation heating system for reheating the bath; (IV) Hot water can be automatically started and stopped automatically.

Components of the Invention This is a water heater that combines an instantaneous water heater and a forced circulation heating bath pot, and from approximately the bottom of the bathtub there is an outgoing pipe, a circulation pump, a check valve A,
The heat exchanger for the bathtub is installed in this order, and the forced circulation heating bathtub is connected to the bottom of the bathtub via a return pipe.The outlet side of the instantaneous water heater is branched, one side is connected to the hot water faucet, and the other side is connected to the hot water tap. The on-off valve B, the water flow sensor, the vacuum breaker valve, and the check valve B are arranged in this order, and the hot water pouring pipe at the tip is connected between the check valve A and the bath heat exchanger.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on FIG. 2. In FIG. 2, parts that are the same as those in FIG. 1, which is a conventional example, are given the same numbers.

In the second slot, the instantaneous water heater 1 consists of an instantaneous water heater burner 2 and an instantaneous water heater heat exchanger 3, and hot water is supplied through one of the outlet sides 4 of the instantaneous water heater heat exchanger 3 through a hot water supply pipe 6. The other end is connected to the solenoid valve B16 and the vacuum breaker valve 17. Check valve B
They are arranged in the order of 18 and connected to the pouring pipe 19.

The bathtub 7 consists of a bathtub burner 8 and a bathtub heat exchanger 9, and the inlet side 13 of the bathtub heat exchanger 9 is connected to the outgoing pipe 16 from approximately the bottom of the bathtub 12. The circulation pump 14° and the check valve A20 are arranged in this order, and the outlet side 10. Arranged in the order of return pipe 11 and bathtub 12
The other side is connected to the bottom part.

In the above basic configuration, the outgoing pipe 15 and the returning pipe 11 between the circulation pump 14 and the bathtub 12 are provided with a bypass pipe 22 having a solenoid valve A21, and the tip of the hot water pouring pipe 19 is connected to a check valve A20 and a bathing pipe. It is connected to the inlet side 13 between the heat exchangers 9. Further, the water amount sensor 23 is connected to the electromagnetic valve B1e.
and the vacuum breaker valve 170. An incoming pipe 2o and an outgoing pipe 24 communicating with the bathtub 12 are circuits for circulation, and have a smaller diameter than the hot water supply pipe 6. In addition, a combined water heater has one bathtub
It is set higher than 2.

Next, we will discuss the operational aspects of instantaneous water heaters and bathtubs.

(1) In the case of normal hot water supply, the desired hot water obtained by an instantaneous water heater is sent out from a hot water tap at the tip of the hot water pipe through a hot water supply pipe. At this time, solenoid valve B is in a closed state.

(2) When reheating a normal bath, the bathtub starts burning by operating the circulation pump while the bathtub is filled with water, and the water in the bathtub is forced to flow in the order of outgoing pipe, bathtub, and return pipe. While circulating, it is heated to the appropriate temperature. At this time, solenoid valve A and solenoid valve B are in a closed state. Also,
A check valve B is provided to prevent circulating hot water from being sent from the pouring pipe toward the vacuum break valve during circulation.

(3) When pouring water at the appropriate temperature into the bathtub When pouring hot water at the appropriate temperature into the bathtub, solenoid valve A and solenoid valve B are open, and the high-temperature water obtained from the instantaneous water heater is poured into the solenoid valve. B, water flow sensor, vacuum breaker valve, check valve B, water is sent to the bath heat exchanger through the pouring pipe, further heated, and sent to the bathtub via both the outgoing pipe and the return pipe via the bypass pipe. sent towards.

At this time, by detecting the flow rate per minute with the water flow sensor and separately detecting the time, the microcomputer calculates the flow rate to be dropped, and when the predetermined amount of water is reached, the electromagnetic This sends a signal to valve B to stop it.

By closing the on-off valve B, air is taken in through the vacuum breaker valve and mixed into the hot water pouring pipe, thereby preventing the hot water in the bathtub from flowing back toward the instantaneous water heater.

Furthermore, by providing a check valve A, the molten metal is prevented from being sent into the circulation pipe side during pouring.

As mentioned above, water can be poured at a capacity that is the sum of the instantaneous water heater's input and the bathtub's input, so hot water can be poured at a high capacity.

Furthermore, since hot water can be sent from both the outgoing and returning pipes from the exit side of the bath heat exchanger, hot water can be poured at a large capacity and at a large flow rate.

With the above configuration, it is possible to send a large amount of hot water at an appropriate temperature obtained by the instantaneous water heater into the bathtub through the forced circulation heating circuit of the bathtub. In other words, the diameter of the forced circulation heating circuit is smaller than that of a normal hot water pipe in order to reduce heat loss from the pipes when reheating a bath.
(commonly called pair tubes). Therefore, even if we consider a configuration in which hot water at an appropriate temperature obtained by an instantaneous water heater is sent into the bathtub through the circulation heating circuit of the bathtub, only a small flow rate can be sent because the flow path pressure loss is large. As shown in one embodiment of the present invention, the flow rate can be increased by using a bypass pipe and a solenoid valve A to feed water from both the outgoing pipe and the returning pipe of the circulation heating circuit.

Furthermore, when pouring hot water into the bathtub, the amount of hot water poured into the bathtub can be detected by the water flow sensor, so that the pouring of hot water can be automatically stopped after the pouring of hot water has started.

Effects of the invention (1) It is possible to pour water into the bathtub with the large capacity that is obtained by adding the input of the instant water heater to the input of the bath pot, and a large amount of high-temperature water can be obtained, and the effect of being able to pour water in a short time can be achieved. .

(2) It is possible to send hot water at an appropriate temperature obtained by an instantaneous water heater through the circulation heating circuit of the bathtub, and since hot water can be poured with the bathtub lid closed, energy-saving hot water pouring can be realized.

(3) By sending hot water at an appropriate temperature obtained by an instantaneous water heater through the outgoing and returning pipes of the bath's circulation heating circuit, it is possible to pour a large amount of hot water for a short period of time.

(4) After pouring starts, the water flow sensor measures the amount of water that has fallen and can be used to pour the metal, so that once the appropriate amount has been poured, the pouring can be automatically stopped, greatly improving convenience.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating the principle of a conventional hot water bath system, and FIG. 2 is a diagram showing the principle configuration of a hot water bath system according to an embodiment of the present invention. 14... Circulation pump, 16... Solenoid valve B117... Vacuum breaker valve, 18... Check valve B, 19... Molten pouring Pipe, 20... Check valve A123... Field water flow sensor. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] Return pipe, circulation pump, and check valve A from the bottom of the bathtub. A forced circulation heating bath pot which is arranged in the order of bath heat exchangers and connected to the other lower part of the bathtub by an outgoing pipe, and an instantaneous water heater whose outlet side is branched and one connected to a hot water faucet and the other connected to an electromagnetic bath. A hot water bath device in which a valve B, a water flow sensor, a vacuum break valve, and a check valve B are arranged in this order, and a hot water pouring pipe at the tip is connected to the inlet side of the bath heat exchanger.