JPS5928282Y2 - Hot water supply system using solar heat - Google Patents

Description

[Detailed description of the invention] This invention relates to a hot water supply system that utilizes solar heat.The purpose of this invention is to provide auxiliary heating when the temperature of hot water is insufficient to increase the amount of heat required by using a small device. The aim is to obtain a product that does not require a boiler with a large capacity that can be secured.

Water heaters that use solar heat may not be able to raise the temperature of the water in the heat storage tank in winter because the heat medium is not sufficiently heated during the winter when daylight hours are short.

In such cases, conventional equipment directly heats hot water using an auxiliary heat source, but in order to instantaneously raise the low-temperature hot water to the required temperature, a boiler with a large capacity is required. It had the disadvantage of becoming larger.

This invention eliminates the drawbacks of conventional products as mentioned above.
The configuration will be described below with reference to the drawings shown as one embodiment.

1 is a heat collector for absorbing solar heat, 2 is an expansion tank, 3 is a circulation path for the heat medium heated by the heat collector 1, and a pump 4 for circulating the heat medium is provided.

Reference numeral 5 denotes a heat exchanger provided in the heat storage tank 6, which raises the temperature of hot water supply water using the heat medium.

7 is a valve that supplies water to the heat storage tank 6 via the pressure reducing check valve 8;
9 is a safety valve, 10 is a faucet, and 11 is a shower.

Reference numeral 12 denotes a heat exchanger for heating the heat medium provided in the middle of the circulation path 3 leading from the heat collector 1 to the heat exchanger 5, and is one of the plurality of piping joints 14 provided in the heating unit 13. It is connected to the.

15 is a radiator for heating.

The present invention adopts the above-mentioned configuration, so that when the heat medium cannot be sufficiently heated in the heat collector 1 due to short lighting time, the heat medium receives sufficient heat from the heat exchanger 12 to raise the temperature of the hot water supply. After the water is obtained, it is sent to the heat exchanger 5 by the pump 4 to raise the temperature of the water in the heat storage tank 6, and returns to the heat collector 1 again, where the circulation is repeated.

As mentioned above, this invention increases the temperature of the heat medium before it reaches the heat storage tank when there is little solar heat, so there is no need for a large boiler and a small boiler is sufficient, allowing the water temperature in the heat storage tank to rise over time. By doing so, hot water having a desired temperature can be used.

Moreover, by forming the heat exchanger as an auxiliary heat source device in parallel with the piping to the radiator of the heating-only device, it is possible to heat the heat medium while heating the room, so hot water heating and space heating can be performed at the same time. It has the following effects.

[Brief explanation of drawings]

The drawing is an explanatory diagram showing an embodiment of a hot water supply mechanism using solar heat according to the present invention. 1... Heat collector, 3... Circulation path, 5...
... Heat exchanger, 6 ... Heat storage tank, 12 ...
···Heat exchanger.

Claims (1)

[Scope of utility model registration request] In a water heater that heats hot water in a heat storage tank by circulating a heat medium heated in a heat collector, a heat transfer device is installed in the middle of the heat medium path from the heat collector to the heat storage tank in parallel with the radiator of the heating-only unit. A hot water supply system using solar heat, characterized by being equipped with a piping-connected heat medium auxiliary heat exchanger.