JPS6294759A - Gas hot water supplier - Google Patents

Abstract

PURPOSE:To provide a hot water supplier capable of obtaining hot water of an arbitrary temperature by other tap even during the hot water pouring into a bathtub by changing the temperature of poured hot water upon unusing the other tap when the temperature of pouring hot water is changed by other tap. CONSTITUTION:In the case of supplying hot water by use of other tap, when a water tap is opened, and a water quantity sensor 15 detects the quantity of water passing through a heat exchanger 14 and discriminates the flow quantity more than the ignition water quantity, a gas main valve 11 and a gas proportional control valve 12 are opened, and a burner 13 is ignited and water entering into the heat exchanger 14 is heated and hot water is poured. When hot water is supplied to a bathtub 17, first, the supply hot water quantity and supply hot water temperature are set by a pouring hot water circuit 20, and a water valve 18 is opened and hot water is poured into the bathtub 17. When the water quantity of the water quantity sensor 16 becomes coincident with that of the water quantity sensor 15, the temperature of supply hot water from the heat exchanger 14 becomes equal to the set temperature of pouring hot water. Upon the simultaneous use of pouring water and other tap, the water quantity detected by the water quantity sensor 15 and that detected by the water quantity sensor 16 are different from each other whereby discrimination is possible. In a case when the set temperature with the other tap is different from the pouring hot water temperature, the set temperature at the other tap is allowed to have a priority. The hot water pouring circuit calculates and operates so that the set temperature is changed thereby the temperature of the bathtub 17 becomes equal to the pouring hot water set temperature when the use of other tap is terminated.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a gas water heater.

Conventional technology Figure 2 shows a row of conventional gas water heaters that can pour hot water into a bathtub. 1 is a gas main valve, 2 is a gas ratio control valve, 3 is a burner, and 4 is a heat exchanger. container, 5 is a water flow switch, 6
is a bathtub, 7 is a water valve for pouring hot water into the bathtub 6, 8 is a water flow sensor that detects the amount of hot water poured into the bathtub 6, 9 is a control device that controls this water heater, and 1o is a temperature that detects the hot water temperature. When the water heater is to pour hot water into the bathtub 6, the amount and temperature of hot water to be poured are set using the control device 9, and when pouring starts, the water valve 7 opens. degree sensor 10
．． Hot water heated to a constant temperature by the groan control device 9 and the gas proportional control valve 2 is poured into the bathtub 6. At this time, the water amount sensor 8 calculates the amount of hot water to be poured into the bathtub 6, and when the set amount of hot water is reached, the water valve 7 is closed to stop pouring, thereby making it possible to pour a fixed amount of hot water into the bathtub.

Problems to be Solved by the Invention However, in the above configuration, in order to keep the pouring temperature constant, it is necessary to let out hot water at a certain constant temperature while pouring, and it is not possible to obtain hot water at any desired temperature using other taps. The drawback was that it was not possible.

The present invention solves these conventional problems and aims to provide a water heater that can provide any desired temperature of hot water using other taps even while pouring hot water into a bathtub.

Means for Solving the Problems In order to solve the above problems, the gas water heater of the present invention detects the amount of poured hot water using a water flow sensor and the temperature of poured hot water using a temperature sensor, and calculates both. In particular, keep track of the temperature of the bathtub at all times, and when the temperature of pouring water changes due to other taps,
By changing the pouring temperature when other taps are not in use, the set hot water temperature can be obtained when pouring is finished.

Effect of the Invention With the above-described configuration, the present invention makes it possible to obtain hot water at a set temperature at the end of pouring water even if hot water is dispensed at an arbitrary temperature using another tap while pouring hot water into the bathtub.

Embodiment I] Hereinafter, an embodiment of the present invention will be described based on FIG. In Fig. 1, 11 is the gas main valve, 12 is the gas ratio control valve, 13 is the burner, 14 is the heat exchanger, 16 is the power sensor (1) that detects the amount of hot water supplied, and 16 is the amount of hot water poured. 17 is a bathtub, 18 is a water valve for pouring hot water into the bathtub 17, 19 is a temperature sensor that detects the hot water temperature, 20 is a sequence control circuit that controls the water heater sequence. , 21 is a hot water pouring circuit that calculates the amount of hot water poured into the bathtub 17 and the bathtub temperature. The operation of the gas water heater configured as described above will be described below. In the case of hot water supply using another faucet, when the faucet is opened, water flows through the heat exchanger 14, and the water flow sensor (1) 15 detects the amount of water. Then, the gas proportional control valve 12 opens and the burner 13 is ignited to heat the water that has entered the heat exchanger 14 to supply hot water.

When pouring hot water into the bathtub 17, first set the pouring amount and pouring temperature in the pouring circuit 2Q, and when pouring starts, the water valve 18
opens and pours hot water into the bathtub 17. At this time, water flow sensor (2) 1
If the amount of water in step 8 and the amount of water in water amount sensor (1) match, the temperature of the hot water discharged from the heat exchanger 14 will be the set pouring temperature. Next, when pouring hot water and using another tap at the same time, it can be determined by the difference in the flow rate between the water flow sensor (1) 15 and the water flow sensor (2) 16, and at this time, the set temperature at the other tap is different from the set temperature for pouring hot water. In this case, the positive circuit calculates and operates to give priority to the set temperature of the other tap, and change the set temperature so that the temperature of the bathtub 17 reaches the hot water pouring set temperature when the use of the other tap is finished. Specifically, the pouring temperature setting is 40°C, and the other tap setting temperatures are 50°C.
If the amount of molten water poured while using other taps in C was 54, then the opening hot water temperature until pouring 54 after the other taps were used was set to 30°C.
As a result, when 101 hot water was poured, 40°C hot water was poured into the bathtub.

As described above, according to this embodiment, it is possible to obtain an arbitrary set temperature when using another tap during pouring.

Effects of the Invention As described above, according to the present invention, the desired hot water temperature can be set whenever other taps are used, without the conventional restriction of not being able to set the water temperature with other taps while pouring water into the bathtub. Obtainable.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a gas water heater showing an embodiment of the present invention;
FIG. 2 is a configuration diagram of a conventional gas water heater. 15...Water amount sensor (1), 16...Water amount sensor (2), j8-9...Water solenoid valve, 19...Temperature sensor, 21...Pouring circuit.

Claims (1)

[Claims] A gas proportional control valve, a temperature sensor that detects the hot water temperature,
a proportional control circuit that controls and drives the gas proportional control valve according to the hot water temperature detected by the temperature sensor;
A sequence control circuit that controls the series of water heater sequences, a water flow sensor that detects the amount of hot water supplied, a water valve that pours hot water into the bathtub, and a hot water pouring circuit that calculates the amount and temperature of hot water poured into the bathtub. A gas water heater characterized by being equipped with a circuit.