JPH04165226A - Automatic hot water feeding device - Google Patents

Abstract

PURPOSE:To vary setting of a water level of an amount of hot water fed in a bath tub even during the feed of hot water by a method wherein when a newly set hot water feed amount exceeds an amount of hot water in the hot water tank, a feed is continued, when the quantity of hot water attains the newly set value, the feed of hot water is stopped, and when it is below the quantity of hot water, a feed is stopped. CONSTITUTION:An amount of hot water fed in a hot water tank 7 is set according to an arrival level in the hot water tank. When a water level detected by a water level sensor 14 does not attain the arrival water level, it is decided whether variation of a set water level is inputted, and when variation is inputted, the feed of hot water is continued. During arrival of a water level at the set value, a hot water feed means is stopped to stop the feed of hot water. When the set water level is not varied, when a present water level in the hot water tank 7 is below a newly set water level, hot water is fed up to the newly set waver level and the feed of hot water is stopped. When a present water level in the hot water tank 7 exceeds the set water level, the feed of hot water is stopped and controlled. Namely, when during the feed of hot water, a set value of a hot water feed amount is varied, when a newly set hot water feed amount exceeds an amount of hot water in the hot water tank 7, a feed is continued, and when the hot water amount attains the noble set value, the feed of hot water is stopped, and when the newly set hot water feed amount is below the hot water amount, the hot water feed means is stopped to stop a feed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic hot water supply device that sets the amount of hot water to be supplied and supplies hot water to a bathtub or the like.

(Prior Art) In conventional water heaters, hot water from the water heater main body is mixed with water at a mixing valve to obtain hot water at a desired temperature, and hot water is supplied to the required locations by a hot water pump.

As an example of automating hot water supply, there has been an automatic hot water supply device that can supply hot water to a bathtub or the like by setting the amount of hot water to be supplied in advance.

(Problem IPl to be Solved by the Invention) However, in the conventional automatic hot water supply device described above, even if the hot water supply amount is set and hot water is being supplied to a bathtub or the like, the setting cannot be changed even if the hot water supply amount is desired to be changed. Therefore, it was necessary to first stop the hot water supply, change the settings, and then start the hot water supply again.

This invention was made in order to solve the above-mentioned problems of the conventional technology, and it is possible to set the water level of the amount of hot water supplied to the bathtub etc. even when hot water is being supplied by specifying the reached water level of hot water supplied to the bathtub etc. The object of the present invention is to provide an automatic hot water supply device that can change the amount of hot water and supply hot water up to a newly set amount of hot water.

[Means to solve the problem]

Therefore, the hot water supply device according to the present invention includes a hot water sending means for sending and stopping hot water to be supplied to the hot water tank, a water level sensor that detects the water level in the hot water tank, and a water level sensor that specifies the reached water level of the hot water in the hot water tank. and a control means for setting the amount of hot water supplied to the hot water tank and controlling the supply of hot water by the hot water delivery means, the control means controlling the hot water supply while supplying hot water to the hot water tank. When the set value of the amount is changed, if the newly set hot water supply amount is greater than the hot water amount in the hot water tank, the supply continues and when the new set value is reached, the hot water delivery means is stopped to stop the hot water supply. The above object is achieved by a configuration characterized in that when the newly set hot water supply amount is less than the hot water amount in the hot water tank, the hot water delivery means is stopped to stop the supply. It is something.

(Function) With the above configuration, the hot water sending means sends and stops the supply of hot water to the isothermal bathtub, and the water level sensor detects the water level in the hot water tank.The control means detects the reached water level of the hot water in the hot water tank. Specify the amount of hot water supplied to the hot water tank and control the supply of hot water by the hot water delivery means.

The control means controls the water heater ib while supplying hot water to the hot water tank.
When the set value of m is changed, if the newly set hot water supply amount is greater than the hot water amount in the hot water tank, the supply continues and when the new set value is reached, the hot water delivery means is stopped to stop the hot water supply. However, when the newly set hot water supply amount is less than the hot water amount in the hot water tank, the hot water delivery means can be stopped to stop the supply.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS A water heater according to the present invention will be described below using an example.

FIG. 1 is a block diagram of main parts showing the configuration of an embodiment according to the present invention. The configuration and operation of the embodiment will be described together with reference to the same figure.

The water heater main body 1 consists of a first water heater main body 1a and a second water heater main body 1b, and takes in tap water from a water tap 2 and supplies water to the lower part of the interior of the first water heater main body 1a. When the first water heater main body 1a becomes full of water, water is supplied to the first water heater main body 1a.
The water enters the lower part of the second water heater body 1b from the upper part of the water heater body 1b, and the second water heater body 1b is also filled with water.

and first and second water heater bodies 1a.

Electric heaters 3a, 3 attached to a relatively lower part inside 1b
energize b to heat the water supply in the water heater main body 1a, Ib,
The water is boiled to a set temperature, for example 88°C or 65°C, and stored inside the water heater body 1a, lb.

Hot water to the outside is taken out from the upper part of the second water heater main body 1b, and tap water corresponding to the amount of hot water taken out is automatically forced into the water heater main bodies 1a and Ib from the water tap 2 as described above. The water is kept full of water at all times.

A sensor 4 for detecting remaining hot water is installed at the top of the water heater body 1a, lb.
a and 4b are attached so that the temperature of the hot water in the relatively upper part of the water heater body can be detected. In addition, sensors 5a and 5 for temperature control are provided at the bottom of the water heater bodies 1a and Ib.
b is attached so that the temperature of hot water relatively lower in the water heater body can be detected.

As for the hot water supply line to the outside, a high-temperature hot water line 6 that directly supplies high-temperature hot water boiled in the water heater main body 1 is piped from the second water heater main body 1b to a required location. An automatic hot water supply line 13 is prepared that does not directly supply high-temperature hot water boiled in the water heater body 1, but instead supplies hot water at a constant temperature of, for example, 42°C to a hot water tank 7 such as a bathtub. A mixing valve 8 with a variable mixing ratio is provided to mix high-temperature hot water and tap water from the faucet 2 to obtain hot water at a predetermined temperature.
It is once accepted into Jistern 10 via . The cistern 10 is necessary to prevent mixed hot water from flowing back into the water heater body, and is a sensor 14a that detects the internal water level.

14b is provided.

Hot water is fed under pressure from the distiller 10 by a hot water supply pump 11, and can be supplied to a hot water tank 7 such as a bathtub via an automatic hot water supply line 13 via a flow rate regulating valve 12 whose opening degree is variable.

A sensor for detecting the temperature of hot water in the tank and a water level sensor 14 for detecting the amount of hot water are installed in the hot water nI7.

The control device 15 controls settings such as the boiling temperature of the water supplied in the water heater body 1, the temperature of hot water in the hot water jfJ7 supplied from the automatic hot water supply line 13, and the amount of hot water supplied, and the various valves, pumps, electric heaters, etc. mentioned above. It is configured to control and execute the process and output the display signal. In addition to the above-mentioned setting operations and display performed from the main operation remote control device 16 of the control device 15, an on-site remote control device 17 is attached that allows setting operations to be performed from a place where hot water is supplied, such as a bathroom. Note that 18 is a control board of the control device 15, in which an arithmetic processing unit (CPU) and a storage device are incorporated.

A 200V commercial power supply is connected as a power supply equipment to the electric heaters 3a and 3b, and a clock device 19 and an integrated power meter 2 are installed.
0 and is turned on and off while measuring time under the control of the control device 15.

Further, for control purposes, a 100V power source is connected to the control section M13. A signal transmission path 21 is connected between each sensor, each operation control unit, and the remote control device W16.17 and the control device 15, so that electric signals or optical signals for control are transmitted. .

With the above configuration, main operation remote control device 1
6 or the on-site remote control device 17 sets the temperature of hot water in the water heater main body 1, the temperature of hot water supplied to the hot water tank 7, and the amount of hot water supplied, and the control device 15 sets the temperature based on the set values and information from each related sensor. Automatic control is performed to supply desired hot water.

In addition, hot water WI7 is supplied by electric valve 9 and hot water pump 11.
The control device 15 specifies the reached hot water level in the hot water tank, sets the amount of hot water supplied to the hot water NI 7, and controls the amount of hot water supplied to the hot water NI 7 by the hot water sending means. It constitutes a control means for controlling the supply of hot water. Note that the hot water delivery means is not limited to the above configuration, but may have any configuration as long as it has a function of sending and stopping hot water to be supplied to the hot water PM7.

Next, the characteristic control of this embodiment will be explained with reference to the flowchart of FIG.

In this embodiment, the water level sensor 14 that detects the hot water level in the hot water tank is capable of detecting the water level continuously from near the bottom of the hot water tank to the upper part where hot water is supplied, or by dividing it into multiple sections as necessary. There is.

In step S1, the amount of hot water supplied to the hot water tank 7 is set based on the reached water level in the hot water tank. In step S2, hot water supply is started by a hot water supply subroutine. In step S3, it is determined whether the water level detected by the water level sensor 14 has reached the set target water level.

If the water level has not yet been reached, the process proceeds to step S4, and it is determined whether there has been an input to change the set water level with respect to the set water level in step S1. If there is no change, hot water supply continues and the process returns to step S3. When the set water level is reached in step S3, the process proceeds to step S5, where the hot water supply means is temporarily stopped by a hot water supply stop subroutine to stop the hot water supply.

If the set water level has been changed in step S4, the process advances to step S6, and if the current water level of hot water 1tI7 is less than the newly set water level, the process returns to step S3 to supply hot water up to the newly set water level, and then the process advances to step S5 to supply hot water. make a stop.

If the current water level of the hot water tank 7 is equal to or higher than the set water level in step S6, the process advances to step S5 and hot water supply stop control is performed.

With the above control, when the hot water amount to be supplied to the hot water tank 7 is set and the set value of the hot water supply amount is changed while hot water is being supplied,
When the newly set hot water supply amount is greater than the hot water amount in the hot water tank 7 detected by the water level sensor 14, the supply continues and when the new set value is reached, the hot water delivery means is stopped to stop the hot water supply; When the newly set hot water supply amount is less than the hot water amount in the hot water tank 7, the hot water delivery means can be stopped to stop the supply.

〔Effect of the invention〕

As explained above, according to the present invention, when the hot water amount to be supplied to the hot water tank is set and the set value of the hot water supply amount is changed while hot water is being supplied, the newly set hot water supply amount is changed to the hot water tank. If the newly set amount of hot water is greater than the amount of hot water in the hot water tank, the hot water supply continues, and when the newly set amount of hot water is reached, the hot water supply is stopped, and if the newly set amount of hot water supplied is less than the amount of hot water in the hot water tank, the hot water supply is stopped immediately. can be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a main part showing the configuration of an embodiment of the present invention, and FIG. 2 is a flowchart showing the characteristic control of the above embodiment. 1, (1a, 1b) --- Water heater body 2 --- Faucet 3 a, 3 b'' --- Electric heater 4 a, 4 b --- Sensor 5 for detecting remaining hot water a, 5
b--Temperature control sensor 6...High temperature water line 7...Hot water tank 8...Mixing valve 9...Motorized valve 10... ... Distern 11 ... Hot water pump 12 ... Flow 11 Adjustment valve 13 ... Automatic hot water supply line 14 ... Water level sensor 14a ... Upper Sensor 14b...Lower sensor 15...Control device 16...Main operation remote control device 17
...On-site remote control device 18...
... Control board 19 ... Timing device (power receiving equipment) 20 ...
・Integrator wattmeter (power receiving equipment) 21...Signal transmission path

Claims (1)

[Claims] A hot water sending means for sending and stopping hot water to be supplied to the hot water tank, a water level sensor for detecting the water level in the hot water tank, and setting the amount of hot water supplied to the hot water tank by specifying the reached water level of the hot water in the hot water tank. and a control means for controlling the supply of hot water by the hot water delivery means, wherein when the set value of the hot water supply amount is changed while hot water is being supplied to the hot water tank, When the set amount of hot water supply is greater than the amount of hot water in the hot water tank, the supply continues and when the new set value is reached, the hot water delivery means is stopped to stop the supply of hot water, and the newly set amount of hot water supply is equal to the hot water supply amount. An automatic hot water supply device characterized in that when the amount of hot water in the tank is less than the amount, the hot water delivery means is stopped to stop the supply.