JPS60213756A - Composite hot-water supplier - Google Patents

Abstract

PURPOSE:To improve handling convenience due to supplying large flow amount of hot-water as well as reliability due to preventing water hammer by a method wherein the outlet of first forced flowing type heat exchanger is divided at a distributing section in the main body of the equipment to supply hot-water to second natural or forced circulating type heat exchanger through a water pouring circuit. CONSTITUTION:The forced flowing type heat exchanger 17 is provided in the main body 16 of the equipment and the outlet thereof is provided with a temperature detector 21, thereafter, a hot-water supplying circuit is divided by the distributing section 22 in the main body 16 of the equipment and one of the circuit is connected to the multi-cock hot-water supplying cocks 24 of a hot-water discharging circuit while the other of the circuit is opposed at a hot-water pouring port 25 to a water supplying pipe 26 provided in the natural or forced circulating type heat exchanger 18. The movement of water in the heat exchanger 17 is detected by a water amount detector 27 and it is corrected and controlled by a control unit 33 so as to obtain an objective set temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a composite water heater that uses gas, oil, electricity, etc. as a heat source and automatically supplies hot water to a bathtub or the like.

Conventional Structure and Problems Conventionally, this type of automatic hot water supply system has been structured as shown in FIG.

A forced water flow type heat exchanger 2 (hereinafter referred to as heat exchanger 2) and a natural circulation type heat exchanger a (hereinafter referred to as heat exchanger 3) are provided in the appliance body 1, and the heat exchanger 3 is connected to the bathtub via a circulation pipe. It is connected to 6. The hot water outlet of the heat exchanger 2 is branched outside the appliance and led to a hot water tap 6 and a hot water tap 7 (constructed so as to face the bathtub 5 etc.).

Once the hot water supply faucet 7 is manually opened, it automatically detects the flow rate at a certain level, and a hot water temperature sensor 8 is provided at the outlet of the heat exchanger 2.

Fuel is supplied from the inlet portion 9, and heat is generated in heaters 10 and 11 provided corresponding to the heat exchangers 2 and 3. Further, each fuel supply system has a fuel controller 12 and a fuel controller 13, each consisting of 1-4.

14 is a remote control, and 15 is a control unit. The remote control 14 can also be installed remotely.

When hot water is supplied by dropping into the bathtub 5 using the heat exchanger 2, when the hot water tap 7 is opened, fuel is supplied to the heater 10 by the fuel controller 12, and hot water supply is started at the hot water temperature according to the remote control 14. At this time, the bathtub 5 is in an open state, which causes a large heat radiation loss and poses a problem in energy saving. To stop hot water supply, use hot water tap 10
However, since this action is instantaneous, water hammer occurs and the hot water supply system generates abnormal vibrations.

This phenomenon becomes more severe the higher the water supply flow rate (8 (1/win or more) and the higher the water pressure), and since it is a pressure wave, it affects other water piping parts, which is a big problem in terms of durability and use. .

Purpose of the Invention The present invention eliminates such conventional problems.In order to prevent the water hammer phenomenon and heat radiation loss when water supply is stopped, hot water is guided to the reheating circuit through a bypass circuit, which impairs economic efficiency. The purpose is to improve usability by providing high-flow hot water supply by regulating distribution and improving reliability by preventing water hammer.

DESCRIPTION OF THE INVENTION To achieve this objective, the present invention divides the outlet section of the first forced water heat exchanger with a distribution section within the appliance body and connects the other natural or second hot water via the pouring circuit. The water is supplied to a forced circulation heat exchanger, and the pouring circuit is provided with a valve driving section, and the other natural or second forced circulation heat exchanger is provided with a water pressure detection section to control them.

DESCRIPTION OF EMBODIMENTS Examples of the present invention will be described below with reference to FIGS. 2 to 6.

In FIG. 2, after a forced water flow type heat exchanger 17 (hereinafter referred to as heat exchanger 17) is provided in the instrument main body 16 and a temperature detector 21 is configured at the outlet part, the instrument main body 16 is
The hot water supply circuit is divided inside the device, and one side is connected to the multi-cock hot water tap 24 of the hot water supply circuit outside the appliance, and the other side is connected to the hot water pouring pipe 23 via the valve drive unit 41 and the hot water pouring spout 25 to the natural or forced circulation heat exchanger 18.
(hereinafter referred to as the heat exchanger 18) is configured to face a water supply pipe 26 provided in the heat exchanger 18. The circuit to this pouring pipe 23 is collectively referred to as a bypass circuit.

As shown in FIG. 3, the distribution section 22 has a divided rotor 22a inside thereof, and is configured to change the distribution ratio to the pouring pipe 23 and the multi-cock hot water tap 24 by changing the rotation angle. The third tooth is an example in which the distribution to the pouring pipe 23 is set to be large, and shows the state during automatic pouring.

The water supply pipe 26 is the water pipe line 1 connected to the bathtub 20 of the heat exchanger 18.
9 in a vertical direction, and its height is set larger than that of the bathtub 20. As shown in FIG. 4, the heat exchanger 18 is provided with a water pressure detection section 36 via a water pipe 35. The water pressure detection section 36 includes a diaphragm valve 38, a pressure equalization spring 37, an interlocking rod 39, and a microswitch 40, and an output signal is transmitted to the control section 33. The water level detection section 36 may be of any configuration as long as it can convert the water level into an output signal.

The heat exchanger 17 and the heat exchanger 18 are provided with a heater 31 and a heater 3, respectively.
2 are correspondingly provided. The fuel supplied from the fuel supply port 28 is controlled by a fuel controller 29 and a fuel controller 30 according to the load, and is generated by the heaters 31 and 32.

Further, a water amount detector 27 is provided at the inlet of the heat exchanger 17. Reference numeral 34 is a setting i that performs an operation for heating, and may be remotely installed. 33 is a control unit that receives settings and signals from each detector;
It is configured to operate each control section, distribution section 22, and valve drive section 41, and when the valve drive section 41 is open, the distribution section 22 increases the ratio toward the bypass circuit side, and when it is closed, the distribution section 22 operates to decrease the ratio. conduct.

FIG. 5 shows an example in which a forced circulation bonder 42 is provided in the water circuit of the heat exchanger 18 on the side where molten metal is poured, and the other configurations are the same.

Specifically, the heater 32 is started by manual start of the setting device 34, and the control unit 34 sends a signal (S,) to the fuel controller 30.
When the multi-cock hot water tap 24 is opened, the water amount detector 27 detects the movement of water in the heat exchanger 17 and sends a signal (S2) to the control unit 33. After being transmitted, the command signal (S3) is transmitted to the fuel controller 29 and is activated to control the signal (S4) of the temperature detector 21.
The target set temperature (TS
).

With the above configuration, when the setting device 34 sets the pouring mode, the valve drive section 41 of the bypass circuit opens and at the same time the distribution section 2
2 performs an operation to increase the distribution to the bypass circuit, and hot water is supplied into the bathtub 20 from the water supply pipe 26. In this case, due to the regulation of the distribution part 22, a stable hot water supply operation can be achieved regardless of whether other multi-cock hot water taps 24 are opened or closed, automatic hot water pouring can be performed in a short time, and the usability is significantly improved.

Therefore, it is possible to reduce heat radiation loss, etc., and is highly energy-saving.

When the water level in the bathtub 20 rises, the balance between the pressure energy received by the diaphragm 38 of the water pressure detection unit 36 and the pressure equalization spring 37 is lost, and the interlocking rod 39 is pushed, causing the microswitch 40
The signal (S5) is transmitted to the control section 34. At this time, the correlation between the water level and the signal (S5) transmission is a design element of the diaphragm 38 and the pressure equalization spring 37, and can be selected arbitrarily.

Based on the signal (S5), the control unit 34 determines that the water level in the bathtub 20 has reached the desired level, and sends a close signal to the valve drive unit 41 (S7).
However, before that, the multi-cock hot water tap 24 is transmitted to the distribution section 22.
A signal (S6) is transmitted to increase the distribution to the bypass circuit, and an operation is executed to reduce the amount of hot water supplied to the bypass circuit.

Therefore, when the valve drive unit 41 is closed, the water flow resistance of the bypass circuit is large, and the flow rate (hot water supply) is regulated to a small amount of water, and the instantaneous closing action also acts to prevent water hammer from occurring. Durability can also be increased. Further, in normal use, priority is given to the multi-cock hot water tap 24 side, and there is no problem in use.

Effects of the Invention As described above, according to the composite water heater of the present invention, the heat radiation loss and water hammer phenomenon that occur during hot water supply and when hot water supply is automatically stopped can be eliminated by the distribution part e = increase, the valve drive part of the bypass circuit, and the water pressure detection part. It is possible to prevent this from occurring due to the structure, and achieves stable high-capacity hot water supply even when multiple taps are used, and has the effects of improved usability, energy saving, and reliability.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a conventional combined water heater, Fig. 2 is a block diagram of a combined water heater according to an embodiment of the present invention, Fig. 3 is a sectional view of the same distribution section, and Fig. 4 is the same water pressure detection Fig. 5 is a block diagram showing another embodiment. 16... Appliance body, 17... First forced water flow type heat exchanger, 18... Natural or second forced circulation type heat exchanger, 19... Water pipe section, 21... Temperature Detector, 22・
... Distribution part, 23 ... Molten pouring pipe, 26 ... Water supply pipe, 3
6...Water pressure detection section, 41...Valve drive section. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A first forced water heat exchanger and another natural or second forced circulation heat exchanger are provided in the main body of the device, and a temperature sensor is provided on the output side of the first forced water heat exchanger, and a temperature sensor is provided on the output side of the first forced water heat exchanger; A water supply provided to the water pipe section of the natural or second forced circulation heat exchanger, with one of the distribution sections connected to a hot water outlet circuit outside the appliance, and the other connected to a hot water pouring pipe equipped with a valve drive section. A composite water heater provided with a hot water pouring circuit for pouring hot water into a pipe, and a means for closing the valve drive unit depending on a water pressure detection unit provided in the natural or second forced circulation type heat exchanger. .