JPH064544U - Water heater with automatic hot water filling device - Google Patents

Abstract

(57) [Summary] [Purpose] When pouring hot water into the bathtub, if the hot water fills the bathtub, a water heater that stops pouring into the bathtub even before the set amount of water or the set time is provided. To do. [Composition] In a water heater provided with an automatic hot water filling device having a pouring water channel 10 for branching from the hot water channel 5 and pouring it into a bath tub 15, and a remote device 19 for setting the amount or time of the water for pouring. Bath adapter 1 in hot water channel 10
4 is equipped with a pressure sensor 16, and when pouring into the bathtub 15, the pressure sensor 16 detects when the bathtub 15 is filled with hot water, and even before the set amount of water or the set time is reached, A water heater equipped with an automatic hot water filling device that stops pouring into 15.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water heater having an automatic hot water filling device.

[0002]

[Prior art]

 A water heater with a high-temperature hot-water supply function shares a hot-water supply function such as a shower with a single heat exchanger, and a function of branching from a hot-water supply channel and pouring hot water into a bathtub or supplying high-temperature hot water. Hot water is used when there is little remaining hot water in the bathtub or when the remaining hot water in the bathtub is lukewarm. In this case, the hot water is supplied by setting the amount of water or the time. When the amount of water is set, pouring or pouring by the water heater is continued until the set amount of water, and even when the time is set, pouring or pouring by the water heater is not stopped until the set time is reached.

[0003]

[Problems to be solved by the device]

 As described above, when pouring or hot water is set by setting the amount of water or setting the time, if the amount of water set is too large compared to the capacity of the bathtub, or if the set time is too long and there is remaining hot water in the bathtub, There was a problem that the hot water overflowed from the bath because it was automatically supplied until the set time. Therefore, it was troublesome to change the set water volume or set time each time depending on the state of the remaining hot water in the bathtub. The present invention has been made in view of the above problems, and stops pouring or pouring water into the bathtub when the bathtub is filled with hot water even before the set amount of water or the set time is reached. An object is to provide a water heater equipped with an automatic hot water filling device.

[0004]

[Means for Solving the Problems]

 The present invention is directed to a water heater equipped with an automatic hot water filling device having a pouring water channel branched from the hot water channel and pouring water into the bathtub and a remote device for setting the amount or time of the water for pouring. A pressure sensor is attached to the bath adapter in the waterway.When pouring water into the bathtub, the pressure sensor detects when the bathtub is filled with hot water, and even before the set amount of water or the set time is reached, The present invention relates to a water heater equipped with an automatic hot water filling device that stops the pouring of water.

[0005]

【Example】

 Next, the present invention will be specifically described by way of examples. FIG. 1 is a vertical sectional view showing a water heater according to an embodiment of the present invention. In the figure, A indicates piping of a gas supply path, and gas is supplied to the burner 4 through a gas tap 7, a gas solenoid valve 2 and a gas proportional control valve 1. Reference numeral B denotes a pipe of a water supply path, which is connected to a heat exchanger 9 from a water source faucet 8 of a hot water supply channel 5 via a water amount detection device 3. The hot water heated by the burner 4 reaches the bath adapter 14 through the water control valve 11, the hopper 12, and the pouring pipe 13 of the pouring water channel 10 branched from the heat exchanger 9, and reaches the bath adapter. It is poured from 14 into the bathtub 15. Further, the other pouring water channel branched from the heat exchanger 9 is connected to a hot water tap 18 via a hot water supply pipe 17.

The pressure sensor 16 attached to the bath adapter 14 is electrically connected to the controller 6 that detects the output value thereof. Further, the controller 6 is electrically connected to a remote device 19 for setting a hot water supply time to the bathtub 15. When the bath adapter 14 is submerged by filling the bathtub 15 with water, water pressure is applied to the pressure sensor 16 and the output value increases as the water level rises as shown in FIG. 2 (the output varies slightly depending on the water temperature). ). When the bathtub 15 becomes full and overflows, the water level does not rise and the output value of the pressure sensor 16 does not change. Therefore, even if the time set by the remote device 19 has not been reached, the controller 6 works for a certain period of time. The structure is such that hot water filling is stopped after a certain time (T seconds in Fig. 2).

[0007]

[Effect of device]

 According to the present invention, when the hot water is filled in the bathtub, the pouring into the bathtub is stopped even before the set amount of water or the set time is reached, so that the hot water does not overflow and is wasted. . Therefore, it is possible to save the trouble of changing the set water amount or the set time each time the hot water is filled.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a water heater according to an embodiment of the present invention.

FIG. 2 is a graph showing the relationship between pressure and output of a pressure sensor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Gas proportional control valve, 2 ... Gas solenoid valve, 3 ... Water amount detection device, 4 ... Burner, 5 ... Hot water supply channel, 6 ... Controller, 7
... Gas mains, 8 ... Water mains, 9 ... Heat exchanger, 10 ... Pouring water channel, 11 ... Water control valve, 12 ... Hopper, 13 ... Pouring pipe, 14 ... Bath adapter, 15 ... Bath, 16 ... Pressure sensor , 17 ... Hot water supply pipe, 18 ... Hot water tap, 19 ... Remote device

Claims (1)

[Scope of utility model registration request] 1. A water heater provided with an automatic hot water filling device having a pouring water channel branched from a hot water channel and pouring water into a bathtub and a remote device for setting the amount or time of water for pouring,
Attach a pressure sensor to the bath adapter in the pouring water channel, the pressure sensor detects when the bath is filled with hot water when pouring into the bathtub, even before reaching the set amount of water or the set time, A water heater with an automatic hot water filling device that stops pouring into the bathtub.