JPS61228258A - Hot water storage tank for solar hot water suplier - Google Patents

Abstract

PURPOSE:To obtain a hot water storage tank capable of storing and supplying emergent drinking water or hot water for provision for natural disaster by setting emergent water supply stopcocks through which water in tanks is taken out in the emergency of water supply suspension to the lower part of the hot water storage tank to the hot water storage tank built in a solar hot water supply system. CONSTITUTION:A manual emergent water supply stopcock 15 is provided to the lower part of a closed tank 4 constituting a hot water storage tank 2, and an air vent valve 12 and a vacuum breaking valve 16 are provided to the top of the tank 4. A pressure valve 14 and an emergent hot water supply stopcock 17 are set to the central part of the boby of the tank 4. The valve 16 is automatically opened when the internal pressure of the tank 4 becomes negative one as the stopcocks 15 and 17 are opened, and the top of the tank 4 is opened to the open air. When the stopcock 15 is opened, the valve 16 is operated and water stored in the bottom of the tank 2 is naturally discharged. When water is continuously supplied, hot water stored in the upper region of the tank is obtained. Also, when the stopcock 17is opened from the beginning, hot water stored in the upper region of the tank can be directly supplied.

Description

[Detailed description of the invention]

TECHNICAL FIELD This invention relates to the configuration of a hot water storage tank incorporated in a solar water heating system.

[Prior art and 8 points therebetween] First, an outline of the conventional configuration of a solar water heating system, which is the subject of this invention, is shown in Fig. 2. In Fig. 2, 1 is a solar heat collector, 2 is a hot water storage tank, and The hot water storage tank 2 has a heat exchanger 5 connected to the solar heat collector 1 described above inside a sealed tank 4 whose outer periphery is covered with a heat-insulating material 3, and a base 6 of which is connected to the solar heat collector 1 using anchor bolts. It is firmly fixed to the foundation of the installation site via the Further, a water supply pipe 7 connected to the water supply is provided at the bottom of the sealed tank 4, while a hot water supply pipe 9 is drawn out from the top of the tank and connected to a hot water supply cock 8 to be used. Further, pressure reducing check valves io and m regulating valves 11 are installed in the middle of the water supply pipe 7, and an automatic air vent valve 12 and a safety valve 13 are installed at the drawer end of the hot water supply pipe 9 at the top of the tank. Reference numeral 14 designates a thermopressure valve which is connected to the center of the body of the hot water storage tank and opens the valve to urgently discharge the hot water in the hot water storage tank when the temperature or pressure inside the container rises abnormally. The operation of such a configuration is well known. The heat medium is heated by the solar radiation S received by the solar heat collector 1 and circulated between the heat exchanger 5 and the hot water storage tank 2. The water stagnant in the tank is heated and turned into hot water. When the hot water supply cock 8 is opened in this state, hot water is supplied from the hot water storage tank 2 to the place of use through the hot water supply pipe 9, and at the same time, tap water is replenished into the tank through the water supply pipe 7. Incidentally, when a large-scale natural disaster such as an earthquake occurs, an emergency situation may occur in which water supply is cut off for a long period of time. To deal with such emergencies, some water storage tanks have been developed and sold that are installed in the middle of water pipes and constantly store water in the tank. However, installing such an emergency drinking water storage tank in the home is difficult in terms of space, and it is also quite expensive in terms of price to ensure sufficient earthquake resistance, freeze resistance, and heat retention. There are disadvantages such as being expensive. Furthermore, if the city gas supply is cut off at the same time as the water supply is cut off, there is also the inconvenience that hot water cannot be immediately obtained from the storage tank. This invention was developed in consideration of the above points, and utilizes the solar water heating system described above, which is becoming more and more popular for household use, to store emergency drinking water in case of natural disasters, etc.
The purpose is to provide a hot water storage tank capable of supplying water and hot water.

[Key points of the invention]

In order to achieve the above object, the present invention provides a hot water tank incorporated in a solar water heating system with an emergency water supply cock installed at the bottom of the tank to take out the water stored in the tank in the event of an emergency of water supply cutoff. . In this way, by equipping the hot water tank with an emergency water supply cock, in the event of an emergency such as a natural disaster causing a water outage or city gas outage, the hot water stored in the hot water tank can be used. can be extracted and used as drinking water. Moreover, the hot water tank is earthquake resistant. It is constructed to meet predetermined standards in terms of freeze resistance, heat retention, etc., and has sufficient water storage capacity to meet the requirements for an emergency drinking water storage tank.

[Embodiments of the invention]

FIG. 1 shows an embodiment of the invention, and the same members as in FIG. 2 are given the same reference numerals. In other words, hot water tank 2
There is an emergency water supply cock 15 that can be opened manually at the bottom of the sealed tank 4 that makes up the tank, and an air vent valve 1 at the top of the tank 4.
A vacuum breaker valve 16 is additionally installed in parallel with 2. Furthermore, an emergency hot water supply condenser 17 is installed in the center of the body of the tank 4 in parallel with the temperature pressure valve 14. Note that the vacuum break 16
operates to automatically open the valve and open the top of the tank to the atmosphere when the internal pressure in the sealed tank 4 becomes negative with respect to atmospheric pressure due to the opening of the emergency water supply cock 15 or hot water supply cock 17. It is something. With the above configuration, emergency water supply tips and tricks can be used in the event of an emergency when water supply is cut off while the solar water heating system is in use.
5 is opened, the vacuum break valve 16 is operated and the water stored in the bottom area of the hot water tank 2 is discharged in a gravity flow manner. If you continue to supply water further, you will be able to obtain the hot water that remains in the upper area of the tank. 7ψ, Takazushiko, ＾慟-＾1□＆1西□町 h1 Kuna-kyaku-譬→-□小MUBO Bankai＾＾The hot water stored in the upper area will be able to be used directly for hot water supply. In addition, when performing emergency water supply and hot water supply, the air vent valve 12 may be opened manually instead of the vacuum break valve 16 described above, and the emergency water supply cock 15 may be installed directly on the tank body of the hot water storage tank 2, or may be used for water supply. It is also possible to branch off from the flange 7a at the lowest end of the pipe 7 and attach it.

【Effect of the invention】

As described above, according to the present invention, an emergency water supply cock is installed at the bottom of the hot water tank built into the tank water supply system to take out the water stored in the tank in the event of an emergency water supply cutoff. In the event of an emergency such as a water outage or city gas outage due to a natural disaster such as an earthquake, the hot water tank can be used as an emergency hot water storage tank and hot water can be extracted from it. Moreover, the hot water storage tank of the solar water heating system is satisfactory in terms of water storage capacity, earthquake resistance, freeze resistance, heat retention, etc.
High reliability can be obtained even if it is 1 trillion Doda Kosuzu Hota Seibo of Assu.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a hot water storage tank according to an embodiment of the present invention;
Figure 2 is a conventional configuration diagram of a solar water heating system.
Heat exchanger, 7: Water supply pipe, 9: Hot water pipe, 15: Emergency water supply cock, 16: Vacuum break valve, 17: Emergency hot water supply cock. 1st! ! ill

Claims (1)

[Scope of Claims] 1) Solar heat that is a sealed tank with a built-in heat exchanger connected to a solar heat collector, converts water sent into the tank from the tap through a water supply pipe into hot water, and supplies hot water to the place of use. 1. A hot water storage tank for a solar water heating system, characterized in that an emergency water supply cock is installed at the bottom of the hot water storage tank to take out water stored in the tank in the event of an emergency water supply cutoff. 2) The hot water tank according to claim 1, characterized in that a vacuum breaker valve is installed at the top of the hot water tank, which opens with negative pressure in the tank when the emergency water supply cock is opened. A hot water tank for a solar water heating system. 3) The hot water storage tank according to claim 1, characterized in that an emergency hot water supply cock is installed in the upper area of the hot water storage tank to take out the hot water stored in the tank in the event of an emergency of water supply cutoff. Hot water storage tank for solar water heating system.