JPH02279929A - Hot water supplying apparatus - Google Patents

Abstract

PURPOSE:To detect an opening state irrespective of the mounting position of a hot water supply plug by providing a water flow detector for detecting the opening/closing of the plug in a hot water supply tube, a solenoid valve and a relief valve cooperating with the detector in an expansion tube, and providing a solenoid valve cooperating with the detector, the component of a pressure reducing valve of high set pressure and a pressure reducing valve of low set pressure in parallel in a water supply tube. CONSTITUTION:If water is filled in a hot water supplying apparatus 1, a water flow detector 7 is turned OFF, solenoid valve 3 is closed, and a solenoid valve 10 is opened. Accordingly, in the apparatus 1, pressure of 0.1kg/cm<2> is applied by a pressure reducing valve L5 to the apparatus 1. Expansion water when the water in the apparatus 1 is heated is discharged from a relief valve 11 through an expansion tube 9. In this case, the pressure in the apparatus 1 becomes 0.15kg/cm<2> of set value of the valve 11. If hot water is externally output from the apparatus 1, when a hot water supply plug 8 is opened, the detector 7 detects the flow of the hot water, the valve 3 is opened, the valve 10 is closed, pressure of 0.9kg/cm<2> is applied by a pressure reducing valve H4, and hot water can be continuously supplied from the plug 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hot water supply pressure increase mechanism when hot water is being used in a water heater.

[Conventional technology]

As described in Japanese Unexamined Patent Publication No. 198762/1982, the conventional device includes a detector installed in the hot water supply pipe section to detect the hot water supply status of the hot water tap, and a top device in the hot water pipe section that constantly connects the hot water storage tank to the atmosphere. An open regulator is provided to enable the water to be opened and to close the opening during hot water supply, and the water supply pipe section is provided with a water supply 4-way cape that controls the water supply in conjunction with this detector.

[Problem to be solved by the invention]

The above-mentioned conventional technology uses the water pressure difference between the atmosphere opening part and the hot water tap to detect the flow during hot water supply, but it is difficult to detect the flow of water when the hot water tap is only slightly opened. Also,
Detection is impossible if the hot water tap is located in a device higher than the air vent.

An object of the present invention is to detect the open state regardless of the mounting device of the hot water tap.

[Means to solve the problem]

In order to achieve the above object, low water pressure is constantly applied to the hot water tap to reliably detect the opening of the hot water tap, that is, the flow of water.

[Effect]

Since low water pressure is applied to the hot water faucet, it is possible to detect the flow of water even when the hot water faucet is rarely opened or when the hot water faucet is located at a higher level than the water heater.

〔Example〕

Hereinafter, one embodiment of the present invention will be explained with reference to FIG.

1 is a water heater, 2 is a water supply connected to the water heater 1, a solenoid valve 8, a pressure reducing valve H+ assembly, and a pressure reducing valve L5 assembly are connected in parallel from the water # side of a water supply, etc. Reference numeral 6 denotes a hot water outlet pipe connected to the water heater l, with a running water detector 7 and a hot water tap 8 at the tip.
are arranged.

Reference numeral 9 denotes an expansion pipe connected to the water heater 1, on which a solenoid valve 10 and a relief valve 11 are arranged.

The detector 7 is adapted to operate in conjunction with a solenoid valve 8 and a solenoid valve 10.

The setting value of the pressure reducing valve H is set to a high pressure, for example, 0.
91 g/lya, and the setting value of the pressure reducing valve L5 is set to a low pressure, for example, 0.1 kg/cm. The relief valve 11 is higher than the setting value of the pressure reducing valve L5, for example, 0.1
It is set at 5kg/cys.

In this configuration, when the water heater 1 is filled with water, the water flow checker 7 becomes Ob'F', the solenoid valve 8 is closed, and the solenoid valve 10 is open. Therefore, water heater 1
A pressure of o, lkQ/1 is applied by the pressure reducing valve L5. Expanded water used to heat water in the water heater 1 passes through the eye-carved pipe 9 and is discharged from the relief valve ll. In this case, the pressure of 1 yen of the water heater becomes g/la, which is the set value of the relief valve 11 of 0.15.

In addition, when taking hot water outside from the water heater l, when the hot water tap 8 is opened, the flowing water detector 7 detects the flow of hot water,
The solenoid valve 8 is opened and the solenoid valve lO is closed. Therefore, the water heater l has a pressure reducing valve H4 of 0.9 kg/lya.
pressure is added, and it becomes possible to continuously supply hot water from the hot water tap 8.

Fig. 2 shows another embodiment in which the mounting device for the water flow meter 7 is placed upstream 1111VC of the water heater 1, which is less expensive than when the water flow meter is attached to each hot water faucet. .

〔Effect of the invention〕

According to the present invention, since low water pressure is always applied to the hot water faucet, the water flow checker operates even when the hot water faucet is opened little or the hot water faucet device is high, so troubles during use are avoided. It has the effect of not having any.

[Brief explanation of drawings]

FIG. 1 shows the structure of a water heater according to one embodiment of the present invention, and FIG. 2 shows the structure of a water heater according to another embodiment. ■...Water heater 8. lO...' Solenoid valve 4...
・Pressure reducing valve 1 (5... pressure reducing valve L 7... flowing water detector 11... relief valve. (4) Hekukage 1 11borishi → noon

Claims (1)

[Scope of Claims] 1. A water supply pipe connected to a water heater, a hot water outlet pipe, and an expansion pipe, and a flowing water detector for detecting opening/closing of a hot water tap in the hot water outlet pipe, and a flowing water detector in the expansion pipe. A solenoid valve and a relief valve are provided in conjunction with the water supply pipe, and an assembly of a solenoid valve and a pressure reducing valve with a high set pressure and a pressure reducing valve with a low set pressure are installed in parallel in the water supply pipe. Characteristic water heater. 2. The water heater according to claim 1, wherein the mounting device for the running water detector is located on the upstream side of the water heater.