JPS62248956A - Hot water supplier - Google Patents

Abstract

PURPOSE:To make it possible to simultaneously supply hot waters with different temperatures to a plurality of hot water outlets by a structure wherein the amount of fuel and mixing device are controlled under the condition that the outlet pipe of a heat exchanger is branched off into a plurality of branch pipes, each of which is connected with the inlet pipe of the heat exchanger and a hot water temperature controller is provided correspondingly to the hot water outlet of each branch pipe. CONSTITUTION:The branch pipes 5a and 5b of an outlet pipe 4 are each connected with an inlet pipe 1 by connecting pipes 6a and 6b and mixing devices 7a and 7b are respectively provided at the junctions of pipes 5a and 6a and 5b and 6b. When hot water supply is intended simultaneously from hot water outlets 8a and 8b, gas flow rate is controlled by regulating a gas flow rate control valve 13 by means of a controlling device 12 in such a manner that the hot water temperature detected by a temperature sensor 10 equals to a temperature which is higher set at hot water temperature controllers 9a and 9b. In the hot water supply circuit on the other hot water temperature controller 9b side, the temperature of which is lower than said set temperature, the temperature of the hot water flowing in the branch pipe 5b is detected and controlled by the temperature sensor 11b on the outlet side of the branch pipe 5b so as to mix the hot water in the branch pipe 5b with the water flowing from the connecting pipe 6b. As mentioned above, in a single hot water supplier, hot waters having different temperatures can be set at a plurality of hot water outlets and simultaneously supplied.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a so-called instantaneous water heater that heats water in a short time by burning gas. This invention relates to a gas water heater used for the purpose of supplying hot water.

2. Description of the Related Art In the past, there were gas water heaters that could freely adjust the temperature of hot water obtained, but it was not possible to obtain different hot water temperatures from multiple hot water outlets at the same time.

Problems to be Solved by the Invention When trying to obtain hot water at different temperatures from multiple taps at the same time, this can be achieved by installing a hot water temperature control unit corresponding to each tap. It costs a lot of money and requires space.

The present invention is an attempt to solve such problems, and is intended to simultaneously supply hot water of different temperatures to a plurality of hot water outlets using one water heater.

Means for Solving the Problems The water heater of the present invention has the outlet pipe of the heat exchanger divided into three parts, each of which is connected to the inlet pipe of the heat exchanger, and a mixing device is installed at each connection part. A hot water temperature regulator is installed at the outlet of each branch pipe, and even when hot water is supplied from multiple outlets at different hot water temperature settings, a gas etc. This control controls the amount of fuel and the mixing device.

Function The water heater of the present invention is one water heater that simultaneously supplies hot water from a plurality of hot water outlets from corresponding hot water outlets so that the temperature reaches the set temperature of each hot water temperature regulator.

Embodiment Hereinafter, a gas water heater according to an embodiment of the present invention will be described with reference to the drawings.

As shown in the figure, water supplied from an inlet pipe 1 is heated by a burner 3 when passing through a heat exchanger 2 and sent to an outlet pipe 4. The outlet pipe 4 is branched into a plurality of branch pipes 5a, 5b, each of which is connected to the inlet pipe 1 by a connecting pipe 6a, 6b, and a mixing device 7a, 7b is provided at the connecting part. In addition, hot water temperature regulators 9a and 9b are provided corresponding to the hot water outlets 8a and 8b (for example, faucets) of the branch pipes 5'a and 5b, so that the hot water temperature can be set at each hot water outlet. It is now possible to do so. A temperature sensor 10 is provided on the outlet side of the heat exchanger 2, and temperature sensors 11a, iib are provided on the outlet side of each mixing device 7a, 7b.

The amount of gas burned in the burner 3 is determined by comparing the set temperature of each hot water temperature regulator 9a, 9b with the signal from the temperature sensor 10 and controlling the gas amount control valve 13 via the control device 12. controlled by.

Now, if we consider the case where hot water is to be supplied from the hot water outlets 8a and 8b at the same time, the hot water temperature detected by the temperature sensor 10 will be set at the higher temperature set by the hot water temperature regulators 9a and 9b. Then, the gas amount control valve 13 is adjusted by the control device 12 to control the gas amount. When the set temperature of one hot water temperature regulator 9a is higher than that of the other hot water temperature regulator 9b, the temperature sensor 11a detects the temperature of the hot water flowing from the outlet pipe 4 to the branch pipe 5a. Then, in response to the signal, the mixing device 7a closes the connecting pipe 6a side, and the water flows directly from the outlet 5/tube 4 to the branch pipe 5a. However, in the hot water supply circuit on the other hot water temperature regulator 9b side which is lower than the set temperature, the mixing device 7b detects the temperature of the hot water flowing from the outlet pipe 4 to the branch pipe 5b with the temperature sensor 11b on the exit side. Then, based on the signal, the control device 12 adjusts the water temperature to the water temperature regulator 9.
The hot water from the outlet pipe 4 and the connecting pipe 6 are adjusted to the set temperature of b.
It is controlled to be the position where water from b is mixed.

Furthermore, when either outlet 8a18b can be used alone, each mixing device 7a, 7b closes the connecting pipe side and controls the gas amount so that the temperature reaches the set temperature of the hot water temperature regulator at the temperature sensor 10 position. Valve 13 is controlled.

Effects of the Invention As described above, the water heater of the present invention is capable of supplying hot water at the same time by setting different hot water temperatures at a plurality of hot water outlets with one water heater. It is advantageous in terms of cost, installation work, and installation time.

[Brief explanation of drawings]

The drawing is a piping circuit diagram showing the configuration of an embodiment of the present invention. 1...Inlet pipe, 2...Heat exchanger, 4.
...Outlet pipe, 5a, 5b...Branch pipe, 6
a, 6b...Connecting pipe, 7a+ 7b...
・Mixing device, 9a, 9b... Hot water temperature regulator, 10
, 11a, 11b...Temperature sensor (10...
...First temperature sensor, 11a, 11b...
・Second temperature sensor), 13...Gas amount control valve (fuel amount control device).

Claims (1)

[Claims] A heat exchanger, a hot water mixing device for mixing water with hot water provided at the connection between each branch pipe branched into a plurality from the outlet pipe of the heat exchanger and the heat exchanger inlet pipe, and a hot water outlet of each branch pipe. a fuel amount control device that controls the amount of fuel burned in the burner, a first temperature sensor provided at the outlet of the heat exchanger, and a second temperature sensor provided at the outlet of each mixing device. Then, the fuel amount control device is controlled by the signal from the first temperature sensor so that the temperature is set to the higher one of the set temperatures of each temperature regulator, and the mixing device at the higher set temperature side is controlled. A water heater equipped with a control device that controls the mixing device on the lower set temperature side by closing it in response to a signal from a second temperature sensor and opening the mixing device on the other lower set temperature side in response to a signal from the second temperature sensor so that the temperature reaches the set temperature. .