JPS6042543A - Hot water supply device with additional heater - Google Patents

Abstract

PURPOSE:To enable to supply automatically a predetermined quantity of water into a bath, by providing a flow counter and a water solenoid valve in a connecting path connecting a downstream side from a heat exchanger of a water channel with a circulation path. CONSTITUTION:A downstream side of a heat exchanger 5 of a water channel is connected by a connecting pipe 13 with a circulation path 7, and a water quantity counter 14 and a water solenoid valve 15, which is opened by a signal to be sent out when a counting of the water quantity counter 14 is set up and closed by completion of the count, are provided. Then, when a main switch SW1 is closed to supply water into a bathtub, a coil of the water solenoid valve 15 is excited and the water solenoid valve 15 is opened, through which the water quantity counter 14 starts operation. When the counting by the water quantity counter 14 is completed, the water solenoid valve 15 is closed and a boiler 4 for hot water supply becomes inactive through turning OFF of a flow switch. After completion of the operation, a sequence circuit for additional heating is changed over into an operating state and hot water in the bathtub 6 is heated up to a temperature to be set up to a thermistor 8.

Description

[Detailed description of the invention] The present invention relates to a follow-up water heater.

Conventionally, as shown in Fig. 1, there is a waterway C connecting a water source a and a hot water tap, a heat exchanger dk intervening in the waterway C, a hot water supply boiler e equipped with a circulation path gVc connected to a bathtub f, and a heat exchanger h intervening therein.
After the boiler e for hot water supply is supplied with hot water heated by the boiler e for hot water supply to the bathtub f.

It is generally known that when the temperature of the hot water is low, the hot water stored in the bathtub f is reheated by a follow-up boiler jv via a circulation path g. 1-This one does not have a means to automatically stop the bathtub fl/1Vc constant hot water after it has been supplied.

For this reason, it is necessary to use a timer or a water level gauge to artificially stop the hot water supply when a certain level of water is supplied, which is inconvenient to operate, and requires a 4-control system to operate everything from supplying hot water to the bathtub to boiling it. It is inconvenient that it is difficult to do so.

The object of the present invention is to obtain a follow-up water heater that is free from such inconveniences, and includes a water channel connecting a water source and a hot water tap;
In a system equipped with a hot water supply boiler equipped with a heat exchanger that intervenes in the waterway, and a follow-up boiler equipped with a heat exchanger r that intervenes in the circulation path VC connected to the bathtub, Me below the heat exchanger in the gauze waterway. A connecting path connecting the side and the circulation path is provided, and a 6f
A specific embodiment of the present invention will be described with reference to the drawings, which is characterized in that a water solenoid valve that opens when the counter is set by Company C and closes when the counter is completed.

In the drawing, (1) is a waterway connecting the water source (2) and the hot water outlet (3), and (4) is a heat exchanger (4) that connects the waterway +11 VC.
For hot water supply with a)? (5) indicates a follow-up boiler equipped with a heat exchanger (5a) that intervenes in a circulation path (7) connected to the bathtub (6), and a thermistor that detects the temperature of hot water flowing through the circulation path (+71). (8) and the thermistor (
8) It is a circulation bonder that operates when the water temperature is detected to be below the set temperature.There is no particular difference from the one commonly used in the past, and it is also used for hot water supply. Ira (4) and follow-up boiler (5) are
Each of them is equipped with gas burners (4b) (5b) as heat sources, and the exhaust from the gas burners (4b) (5b) is carried out via a common 4,1 (air tact (1)) with an exhaust fan 11.
) The exhaust pipe (tea VC*) is configured to be discharged from the VC, and the gas nozzles (4b) and (5b) in both cars are operated by flow switches (not shown) intervening in the waterway (1) and the waterway (7), respectively. The fact that it is operated is also no different from the commonly used ku).

In this invention, the downstream side of the heat exchanger (5) of the waterway (1) and the circulation path (7) are connected by connecting pipes (131 to 1), and a water flow counter is connected to the connecting pipe OJ. (14J and the water flow counter (+41) are provided with a water electromagnetic valve (151) that opens according to the signal when setting the count and closes when the count is completed, and two check valves (+61161
was used to prevent water from flowing back from the bathtub (6) side to the water source (2) side.

In addition, the water quantity counter f141 is set as shown in Fig. 3.
An impeller (14b) with a magnet (14a) facing inside and a detection unit (14c) that detects the rotation of the impeller (14b).
The detection unit (14c) detects the impeller (14).
The rotation speed of b) is emitted as a pulse signal.

Then, the water is supplied by the magnetic valve (151).
The control is performed by an electric circuit as shown in FIG. 4, for example.

To explain this, the detection part (14
c) An integrating counter A1 that counts pulse signals from the counter A1 A DC/AC converter B1 that switches the DC signal from the counter A to an AC signal VC1 A polyurethane water setting device C A reset signal circuit E intervenes in the counter A, and the reset signal circuit E includes a normally open main switch SW and a normally closed sub switch SW2. In addition, the main switch sw1 has a relay contact r! of the first relay R1! 01 further includes a water solenoid valve, 00
The control circuit for the coil (14a) includes the post-switch switch S'W+ in series therewith.

A second relay R connected to the power supply αD via S W2 k
Furthermore, the third relay R3 is connected in series with a thyristor S as a switching element, and the thyristor S is connected to the direct current, It is constructed so that when No. 18 of AC converter B becomes higher than the signal of water level setting device C, the signal VC generated at the output terminal of the comparator is closed.

Next, the operation of this device will be explained.

When the main switch SWI is closed to supply water to the bath, the counter A is reset and at the same time, the a contact r2 of the second relay R2 that intervenes in the water solenoid valve α is closed. Therefore, the coil of the water solenoid valve 0υ is energized, and the water solenoid valve H opens.
As indicated by the arrow, a flow of water is generated through the water channel (1), the connecting pipe (Kasumi) and a part of the circulation pipe (7) to the bathtub ill VC, thereby operating the water i, 1. counter 041,
Pal l'a' according to the amount of water + sent o1 to counter A
Counter A starts counting. At the same time, the gas nozzle (4a) of the hot water supply boiler (4) and the exhaust fan (111) are operated by the switch 70 (not shown) to heat the feed water flowing inside the heat exchanger (4a).

A certain amount of hot water is then stored in the bathtub (6). When the instant flow rate counter I completes the counter, a signal is obtained at the output terminal of the comparator, a voltage is obtained at the gate of the thyristor S, the source and drain of the thyristor S are made conductive, and the third relay R3 is energized.

Therefore, b contact r3 of relay R3 opens. For this reason, the water valve closes. Therefore, there is no flow in the water channel (1), and the flow switch is turned off, making the MrJ4 boiler (4) inoperable. After this operation is completed, the sequence circuit for backward use switches to the operating state, and when the thermistor (8) VC detects that the water temperature in the bathtub 161 is below the set temperature, as in the case of conventionally used ones, the pump (9) )
operates to generate fju reflux in the circulation path (7). According to this, the flow switch (not shown) in the circulation path (7) is closed and the gas burner (5) of the forced-fire boiler (5) is closed.
a) is operated to heat the hot water in the bathtub (61) at the temperature set in the thermistor (8).

For hot water supply, by opening the tap 13), a flow switch (not shown) in the waterway (1) is activated, which turns on the gas nozzle (4a) of the hot water boiler (4) and the exhaust fan UE. This is no different from what has been commonly used in the past, as it heats the water supply flowing through the heater (4b).

In the drawing (2 indicates the water control valve interposed in the waterway fil.

The water control valve +161 is connected to a thermistor (1?) downstream of the heat exchanger (4 &) in the waterway (1).When the water temperature is below the set temperature, the water supply magnet is throttled and the heat exchanger ( 4a
) works to keep the water temperature above a certain level. (1(
(To) is an electric heater wrapped around the hot water tap (3) of the waterway fil to ensure the hot water temperature when the hot water starts to flow. vessel, f2
11 r is a permanent burner facing the gas nozzles (4b) and (5b).

In this way, according to the present invention, when water is supplied to the bathtub, water 't1 opens at the setting of the flow rate counter and closes at the completion of the counter.
1. Because it is done via a magnetic valve, a constant amount of water can be automatically supplied to the bathtub, and the special VC flow counter and water solenoid valve are interposed in the connection path that connects the circulation path with the downstream side of the waterway heat exchanger. , it is sufficient to connect the connection path to the waterway and the circulation path, and the structure of the waterway is simple.Moreover, the water flow counter and the water solenoid valve can be used to easily control the circulation path when hot water is dispensed from the hot water faucet and followed. It has the effect of not causing any hindrance to the flow of hot water.

[Brief explanation of drawings]

Fig. 1 is a side view showing the conventional example, Fig. 2 is a river surface view of one row of the present invention's color, Fig. 3 is an enlarged view of the Jh filter counter section, and Fig. 4 is a side view of the conventional example. is 1b in the s iti'J control circuit diagram
Ru. )1)...Waterway 12)...Water source (;3:...Hot water 1) (4)...Dairer for hot water supply (
5)...Boiler for reheating (1 boiler...Water counter (
151...2 people outside the water solenoid valve Fig. 1 Fig. 3 Fig. 4D

Claims (1)

[Claims] A water supply system that includes a waterway connecting a water source and a hot water tap, a hot water supply zeiler equipped with a heat exchanger intervening in the waterway, and a follow-up boiler equipped with a heat exchanger intervening in a circulation path connected to the bathtub. , a hot water supply with follow-up, characterized in that a connection path connecting the circulation path to the downstream side of the heat exchanger of the waterway is provided, and a water solenoid valve that opens when a flow rate counter is set and closes when the counter completes is inserted in the connection path. vessel.