JPS6124841Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot water supply device, and particularly to improving the hot water storage method thereof.

In conventional water heaters, a heating element is placed at the bottom of a hot water storage tank, and hot water generated by this heating element is stored in order from the top of the hot water storage tank, and a hot water sensor installed at the bottom of the hot water storage tank detects the hot water in the hot water storage tank. There was a configuration that controlled the entire interior to be maintained at a predetermined temperature or higher.

For this reason, when the hot water supply load is small, there have been various methods of lowering the set temperature of hot water to reduce heat loss, but since the highest temperature of hot water in the hot water storage tank also decreases according to the set temperature. However, it has the disadvantage that it is not suitable for applications that require high-temperature water, such as adding hot water to a bathtub or shaving.

The present invention was developed in view of the above points, and the purpose is to provide a water heater that can store hot water at a predetermined temperature throughout the hot water storage tank and can obtain the required amount of high-temperature water. shall be.

For this reason, the present invention provides a hot water tank with a water supply port at the bottom and a hot water supply port at the top, with an upper pouring port at the top and a bottom pouring port at the bottom. a hot water supply path interposed with a hot water supply device comprising a heat source that heats the water to be sent out, the hot water supply path branching into two from downstream of the heat source and connected to the upper pouring port and the lower pouring port; a hot water supply route switching means that is interposed at a branch part of the supply route and selectively switches the hot water supply route between a route leading to the upper pouring spout and a route leading to the lower pouring spout; and adjustment based on the hot water supply operation by the hot water supply device. The hot water flow rate regulator includes means for detecting that a possible predetermined time has elapsed, and a switch for stopping the hot water supply operation by the hot water supply device in response to a detection signal from the means.

In this configuration, when the hot water supply route switching means switches the hot water supply route to the route leading to the bottom pouring spout and the hot water supply device is operated, hot water is supplied from the bottom pouring spout into the hot water storage tank, and the entire inside of the hot water storage tank is heated. It becomes possible to store hot water at a predetermined temperature.
In addition, if you switch the hot water supply route to the upper pouring spout, hot water will be supplied directly from the upper pouring spout to the upper part of the hot water storage tank. It becomes possible to obtain.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 1 is a hot water storage tank with a hot water supply port 2 at the top and a water supply port 3 at the bottom, and 4 is a hot water supply port 2.
5 is a pressure reducing valve for water supply installed between the water supply port 3 and a water supply source (not shown) and near the water supply port 3; 6 is a pressure reducing valve provided near the water supply port 3; A water supply temperature detector, 7 a safety valve connected to the hot water supply port 2, 8 an upper pouring port provided at the top of the hot water storage tank 1, 9 a bottom pouring port provided at the bottom of the hot water storage tank 1, and 10 a bottom pouring port. This is a hot water temperature detection device installed near the sprue 9. Here, a hot water supply device consisting of a pump 14 connected to a water supply source and a heat source 13 for heating the water sent out by the pump 14 is interposed, and the heat source 13 is branched into two from the downstream side and is connected to the upper inlet. A hot water supply route 25 connected to the sprue 8 and the lower pouring spout 9, and a route interposed at a branch of the hot water supply route 25 that connects the hot water supply route 25 to the upper pouring spout 8 and the lower pouring spout 9. a switching valve 11 as a hot water supply route switching means for selectively switching between the hot water supply route and the hot water supply route; a means for detecting that an adjustable predetermined time has elapsed since the hot water supply operation by the hot water supply device; A hot water amount regulator 20 such as a timer equipped with a switch for stopping the hot water supply operation by the supply device is provided.

To explain this configuration in detail, the upstream end of the hot water supply path 25 is connected between the pressure reducing valve 5 and the water supply port 3. The switching valve 11 has an upper pouring spout 8 and a lower pouring spout 9.
two selection ports 11b, 1 connected respectively to
1c and a common port 11a. A switching valve 12 selectively guides high-temperature hot water to the common port 11a of the switching valve 11, and its selection port 12b is connected to the common port 11a. The heat source 13 is connected to the common port 12a of the switching valve 12. 15 is a heat exchanger connected to the selection port 12c of the switching valve 12; 16 is a bathtub whose temperature is raised by receiving the heat of the hot water flowing through the heat exchanger 15; 17 is a power source; and 18 is a heat source generated by the heat source 13. This is a selection switch for selecting whether to supply high-temperature hot water into the hot water storage tank 1 or the heat exchanger 15, and its common terminal 18a is connected to the power source 17. 19 is a switching terminal 18b of the selection switch 18
An electric machine for driving the switching valve 12 is connected to the electric machine, and when excited, the common port 12a is brought into communication with the selection port 12c. The hot water amount regulator 20 has a hot water temperature detector 1 connected to a switching terminal 18c of the selection switch 18.
A relay 21 connected through 0 is a relay connected in series to the hot water temperature detector 10, and is equipped with an excitation coil 21a and contacts 21b, 21c, and 21d. When the excitation coil 21a is excited, the contacts 21b and 21d are connected. is closed and contact 21c is opened, while excitation coil 2
When 1a is demagnetized, each contact 21b, 21c, 21
d is the opposite of the above.

22 is the excitation coil 21a of the relay 21 and the contact 2
1b is a changeover switch that selects whether to selectively force the hot water flow regulator 20 connected in series or to operate it according to the water supply temperature.
2a is the contact 2 between the exciting coil 21a and the contact 21b.
2c is the supply water temperature detector 6, and the contact 22d is the power supply 1.
7, and the contact 22b is an open terminal. 23 is a motor for driving the switching valve 11 connected to the contact 21c of the relay 21; 24 is a relay connected to the switching terminal 18b of the selection switch 18; A contact point 24b connecting the switching terminal 18b and the pump 14, the hot water amount regulator 20, and the pump 1
4 and a contact point 24c that connects the contact point 24c.

The operation of the water heater having such a configuration will be explained.

First, when the selection switch 18 is connected to the changeover terminal 18c side and the changeover switch 22 is connected to the contact 22c side, if the feed water temperature is low, the feed water temperature detector 6 is in the closed state, so the relay 21 is closed. The exciting coil 21a is excited and the contacts 21b and 21d are closed, while the contact 21c is opened. Due to the state of this relay 21, the hot water amount regulator 20 is short-circuited and becomes inactive, and the electric motor 23 becomes demagnetized. Further, since the electric motor 19 is also in a demagnetized state, the switching valve 11 is connected to the common port 11a and the selection port 11b.
The common port 12a and the selection port 12b of the switching valve 12 are in communication with each other. Therefore, the high temperature hot water generated by the heat source 13 is transferred to the switching valve 1.
1 and 12 to the lower pouring port 9, and flows into the hot water storage tank 1, where hot water is gradually stored from the upper part. When this operation continues and the hot water temperature detector 10 installed in the hot water storage tank 1 detects a hot water temperature higher than the set temperature, the hot water temperature detector 10 opens.
Power supply to relay 21, pump 14, and heat source 13 is stopped.

On the other hand, if the feed water temperature is high, the feed water temperature detector 6
is opened, so the excitation coil 21a of the relay 21
is not excited and contacts 21b and 21d are open, while contact 21c is closed.

As a result, the electric motor 23 is excited, and the switching valve 1
In the switching valve 1, the common port 11a and the selection port 11c are in communication, and in the switching valve 12, the common port 12a and the selection port 12b are in communication.

Therefore, the high temperature hot water generated by the heat source 13 flows to the upper pouring port 8 via the switching valves 11 and 12.
The hot water directly flows into the upper part of the hot water storage tank 1 and is stored therein.
This inflow amount is determined by the time set by the hot water amount regulator 20, and when the time has elapsed, an internal switch of the hot water amount regulator 20 is opened and power supply to the pump 14 and heat source 13 is stopped. As a result, the operation of supplying high temperature hot water to the upper part of the hot water storage tank 1 is stopped.

Next, when the changeover switch 22 is connected to the contact 22d side, the feed water temperature detector 6 is short-circuited, the excitation coil 21a of the relay 21 is energized regardless of the feed water temperature, and the hot water amount regulator 20 is short-circuited. This results in
power supply 17, selection switch 18, hot water amount detector 10,
A direct circuit is constituted by a pump 14 and a heat source 13, and high-temperature hot water flows into the lower part of the hot water storage tank 1 via the switching valves 11, 12 and the lower pouring spout 9, and is gradually stored from the upper part. Then, when the storage operation continues and the hot water temperature in the hot water storage tank 1 reaches the set temperature, the hot water temperature detector 10 opens, the power supply to the pump 14 and the heat source 13 is stopped, and the hot water in the hot water storage tank 1 The temperature is maintained at a substantially constant value.

On the other hand, when the changeover switch 22 is connected to the contact 22b side, the excitation coil 21a of the relay 21 is not excited, so the contact 21d is opened, and the power supply 17, selection switch 18, hot water temperature detector 10, and hot water amount regulator 2
0, a pump 14 and a heat source 13 form a series circuit. On the other hand, since the contact 21c of the relay 21 is closed, the motive 23 is energized and the switching valve 1
1, the common port 11a and the selection port 11c communicate with each other, and high-temperature hot water generated by the heat source 13 is directly stored in the upper part of the hot water storage tank 1 via the upper pouring port 8 for a period of time set by the hot water amount regulator 20. The storage operation continues for a period of time, and when this time has elapsed, the internal switch of the hot water flow regulator 20 is opened, and the pump 1
4. Power supply to the heat source 13 is stopped. As a result, the operation of supplying high temperature hot water to the upper part of the hot water storage tank 1 is stopped.

In the above configuration, by supplying hot water into the hot water storage tank 1 from the bottom pouring spout 9, hot water is gradually stored in the hot water storage tank 1 from the upper part, and the entire inside of the hot water storage tank 1 is filled with a predetermined amount. Can store hot water. In this case, as shown in this embodiment, the hot water temperature may be adjusted to a set temperature using the hot water temperature detector 10.

In addition, by supplying hot water into the hot water storage tank 1 from the bottom pouring spout 9 and adjusting the supply amount using the hot water amount regulator 20, it is possible to easily obtain the required amount of high-temperature water for purposes such as adding hot water to a bathtub or shaving. Since the hot water storage tank 1
There is no need to store high-temperature water throughout the interior.
It can save thermal energy and has a great energy saving effect.

In contrast, the selection switch 18 is switched to the switching terminal 1.
When connected to the 8b side, the excitation coil 2 of the relay 24
4a is excited, contact 24c is opened, and contact 24b is closed. At the same time, the electric motor 19 is energized, the common port 12a and the selection port 12c of the switching valve 12 are brought into communication, and the high-temperature hot water generated by the heat source 13 flows through the heat exchanger 15, causing the water in the bathtub 16 to flow. Heat.

In this way, it is possible to selectively switch between the hot water supply function and the function of radiating heat to objects to be heated, such as water in the bathtub 16, thereby providing a water heater that can be used for multiple purposes.

In the above embodiment, the water in the bathtub 16 is heated, but it can also be used as heat for heating.

As explained above, according to the present invention, high-temperature hot water can be selectively supplied to the upper and lower parts of the hot water storage tank, and the amount of hot water can be adjusted, so that the whole inside of the hot water storage tank can be It can be used both when you want to store hot water at a predetermined temperature and when you want to obtain the required amount of high-temperature water for hot water for bathtubs, shaving, etc. It is easy to use, saves thermal energy, and has an energy-saving effect. This has a great practical effect of providing a hot water supply device that can be used to a great extent.

[Brief explanation of the drawing]

FIG. 1 shows a schematic vertical system diagram of a hot water supply device which is an embodiment of the present invention, and FIG. 2 shows a control circuit diagram of the same device. 1...Hot water storage tank, 2...Hot water supply port, 3...Water supply port, 8...Upper pouring port, 9...Lower pouring port, 11,1
2...Switching valve, 13...Heat source, 14...Pump,
20... Hot water amount regulator, 25... Hot water supply route.

Claims (1)

[Scope of utility model registration request] A hot water storage tank with a water supply port at the bottom and a hot water supply port at the top is provided with an upper pouring port at the top and a bottom pouring port at the bottom, while heating a pump connected to a water supply source and the water delivered by the pump. A hot water supply device consisting of a heat source is interposed, and a hot water supply path is connected to the upper pouring port and the lower pouring port by branching from the downstream side of the heat source, and a hot water supply route switching means for selectively switching a hot water supply route between a route leading to an upper pouring spout and a route leading to a lower pouring spout; What is claimed is: 1. A hot water supply device comprising: means for detecting this, and a hot water amount regulator equipped with a switch that stops the hot water supply operation by the hot water supply device in response to a detection signal from the means.