JPS6230664Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a storage type hot water supply control system equipped with a program control unit that controls the time for turning on the heat source and the temperature of the hot water. In this storage type hot water supply system, which appropriately heats stored water using a heat source 1 such as electricity, gas, or oil to supply hot water, the system is provided with an intermittent control device 2 that turns the heat source 1 on and off, a temperature control device 3 that sets the hot water temperature to a predetermined temperature, and a program control device 4 that controls both control devices 2, 3, so that the heat source is turned off during times when there is almost no hot water being supplied and the water temperature is set to a high temperature during times when there is a high amount of hot water being supplied.
This relates to a storage-type hot water supply control system that is characterized by being program-controlled to keep the hot water temperature low during times when the amount of hot water required is low.

In conventional hot water storage type hot water supply control systems, the temperature control function is either fixed and constant, or even if it is variable, it is necessary to adjust the temperature each time. If the temperature control function is fixed, the water will be heated to a predetermined temperature regardless of whether the amount of hot water is large or small, so when the amount of hot water used is small, the heat radiated from the hot water storage tank is large, reducing the overall efficiency of the hot water system. With variable adjustment functions, the overall efficiency of the hot water system can be improved by setting the temperature each time according to the amount of hot water being supplied, but it is practically difficult to set the temperature each time, and storage type hot water heaters The disadvantage was that the advantage of the system, which is to obtain the required amount of hot water at the required time, was lost.

In order to solve the above drawbacks and increase the overall efficiency of the hot water storage type hot water system, programmed operation is performed by controlling the time according to the required amount of hot water supply.
It was insufficient in terms of controlling the amount of heat stored in the hot water storage tank (defined as the specific heat of water x volume x temperature difference with the surroundings).

In view of the above points, this invention is a hot water storage type that can freely set the amount of heat stored in the hot water storage tank through program control depending on the amount of hot water being supplied, improving the overall efficiency of the hot water supply system and performing energy-saving operation. The purpose is to provide a hot water supply control system.

The present invention will be explained in detail based on illustrated embodiments. Figure 1 is a block diagram of the present invention, Figure 2 is an example circuit diagram, and Figure 3 is a block diagram of the present invention.
The figure is a time chart. That is, a heater, which is a heat source 1, is arranged in a hot water storage tank 5, which is a heat exchanger, and is connected to a power source 6 via an intermittent control device 2 and a temperature control device 3, which will be described later, to constitute a hot water supply system. . Of course, a gas burner or an oil burner may be used as the heat source 1. The above intermittent control device 2
The program control device 4 controls the heat source 1 on and off, and the temperature control device 3 controls the temperature of the hot water in the hot water storage tank 5 to a preset temperature by the program control device 4. Each of the above control devices 2, 3, 4
To explain in more detail based on an example using the heater 1 as the heat source 1, the program control device 4 is composed of a timer section composed of a microcomputer and a contact control section, and the timer section receives input from the program input device 11. It is now possible to set multiple time zones. 7 is a heat source disconnection contact inserted in series between the power supply 6 and the heater 1; this contact 7 is controlled by the heat source on/off signal output from the program control device 4, and the hot water supply amount is almost constant. They are being opened at inconvenient times. 8
is a set temperature switching contact, which is switched to the normally open contact side 8b during times when the amount of hot water supply is large, and is switched to the normally closed contact side during times when the amount of hot water supply is low, according to the temperature switching signal output from the program control device 4. Switched to 8a. 9 is a thermostat that sets the water temperature to 80°C, and 10 is a thermostat that sets the water temperature to 60°C. The contact 8 and both thermostats 9 and 10 constitute a temperature control device 3. In addition, when the heat source 1 is a gas burner or an oil burner, the heat source, the contact 7 and the contact 8 for switching the set temperature are solenoid valves, and each thermostat 9, 10 is converted into a temperature sensor so that the temperature can be set in advance by the program control device 4. The electromagnetic valve may be opened and closed during the specified time period, and the temperature of the water may be kept constant using a temperature sensor.

In the hot water storage type hot water supply control system configured as described above, for example, as shown in FIG. If a program is entered to switch the set temperature switching contact 8 to the normally open contact side 8b between 4:00 PM and 10:00 PM as shown in Figure 3 (c), there will be almost no hot water supply as shown in Figure 3 (a). Late night (10:00 p.m. to 4:00 p.m.)
Also, at midday (10:00 to 16:00), the heat source and disconnection point 7 is opened and the heater 1 and the power source 6 are immediately disconnected, and the water temperature in the hot water tank 5 becomes low, and from 4:00 to 10:00. Since the heater 1 is connected to the power source 6 via the heat source/disconnection contact 7 and the normally closed contact side 8a of the set temperature switching contact 8, the thermostat 10 maintains the water temperature in the hot water tank 5 at 60°C. On the other hand, from 16:00 to 22:00, the heater 1 is connected to the power source 6 via the heat source, disconnected contact 7, and normally open contact side 8b, so the thermostat 9 maintains the water temperature at 80°C. Therefore, when preparing breakfast, washing your face, doing laundry, or tidying up after breakfast, etc., which require a small amount of hot water, do not use hot water heated to 60℃, and only use hot water heated to 80℃ when the amount of hot water is high, such as when using a bath. If the amount of heat stored in the hot water tank is small in the middle of the night when there is almost no hot water supply, the amount of heat stored in the hot water tank can be increased only during times when there is a large amount of hot water supplied, and the difference between the water temperature and the ambient temperature can be increased. Unnecessary heat radiation due to differences in air temperature is eliminated, improving the overall efficiency of the water heating system and enabling energy-saving operation.

As mentioned above, the present invention is a hot water storage type hot water control system that heats stored water appropriately using a heat source such as electricity, gas, or oil. A temperature control device that sets the hot water temperature and a program control device that controls both control devices according to the amount of hot water supplied at a preset time of the day are installed, and the heat source is turned on during times when there is almost no amount of hot water supplied. When the system is turned off, the water temperature is set to a high temperature during times when the amount of hot water supplied is high, and the water temperature is set to a low temperature during times when the amount of hot water supplied is low. The temperature is set to the minimum required level to reduce heat dissipation due to the temperature difference between the hot water temperature and the ambient temperature, which has the effect of improving the overall efficiency of the hot water system while ensuring the amount of hot water supplied at each time of day. There is. In other words, in the case of this invention, the amount of heat storage is automatically adjusted to the minimum necessary amount according to the amount of hot water supplied at the time of day according to the daily living conditions of each household, so The effect is that the amount of heat dissipated due to the temperature difference between the hot water temperature and the ambient temperature can be suppressed as much as possible while always maintaining the amount of heat storage at an optimum level, and the overall efficiency can be increased.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a circuit diagram of the same, and Figs. A temperature control device, 4 is a program control device.

Claims (1)

[Scope of utility model registration request] In a hot water storage type hot water control system that heats stored water appropriately using a heat source such as electricity, gas, oil, etc., there is an intermittent control device that controls the heat source on and off, and a temperature control device that sets the water temperature to a predetermined temperature. and a program control device that controls both control devices in accordance with the amount of hot water supplied at preset times of the day, so that the heat source is turned off during times when there is little amount of hot water being supplied, and when there is a large amount of hot water supplied. This hot water storage type hot water supply control system is characterized by program control so that the hot water temperature is set to high temperature during the period of time, and the water temperature is set to low temperature during times when the amount of hot water supply is small.