JPS5848516Y2 - A water heating system consisting of a boiler and a hot water storage tank - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hot water system that uses a boiler and a hot water storage tank to constantly provide hot water at a constant temperature.

In general, hot water devices are instantaneous water heaters that have a small amount of water.
(b) Hot water storage type, ←→ Combination of instantaneous water heater type and hot water storage tank, broadly divided into 03 types.

(b) and (c) are for responding to short-term overloads.

However, in conventional buttons, low-temperature make-up water is uniformly mixed throughout the tank by forced circulation during hot water supply or by convection caused by heating.

Therefore, when hot water is supplied, there is a drawback that the temperature drops and the significance of storing hot water is halved.

Additionally, in the early stages of operation, there was a problem in that the water in the hot water storage tank could not be used until the temperature rose.

Furthermore, in a water tank in which high-temperature water is stored above and low-temperature water is stored below, a relatively stable temperature difference boundary is maintained unless forced circulation is performed mechanically or by heating, and this phenomenon occurs in daily life. This can be easily inferred from the phenomenon inside the bathtub.

In consideration of the above points, this invention solves the conventional drawbacks, and aims to provide hot water at a constant temperature by creating a temperature difference interface in the hot water storage tank without mixing make-up water and high-temperature water. That is.

Hereinafter, embodiments of this invention will be described based on the drawings.

A hot water storage tank 1 and a boiler 2 are provided separately.

3 is a burner. A hot water supply pipe 4 is connected to the upper part of the hot water storage tank 1, and a water supply pipe 5 is connected to the lower part.

A temperature controller 7 for controlling the burner 3 is provided in the middle of the piping 6 from the lower part of the hot water storage tank 1 to the lower part of the boiler 2, and is designed to detect the temperature of circulating water and control the burner 3 of the boiler 2. It has become.

Further, a circulation pump 8 and a flow rate control valve 9 are inserted in the middle of the piping 6, respectively.

Piping 10 from the top of the boiler 2 to the top of the hot water storage tank 1
A thermometer 11 is provided in the middle.

In other words, the hot water storage tank 1 and the boiler 2 are connected to the circulation water pipe 6.
, 10.

As an example, a case is shown in which the circulation pump 8 and the flow rate control valve 9 are inserted into the piping 6, but of course the piping 1
There is no problem even if it is inserted and arranged in 0.

Next, the operation of the hot water device of this invention will be explained.

Now, when the water supply temperature is 20°C, adjust the flow rate control valve 9 (flow rate Q2
) and want to constantly obtain hot water at 80°C from the hot water supply pipe 4, when the hot water supply amount Q1 is smaller than Q2, the
Hot water at 0° C. is gradually stored from the upper part of the hot water storage tank 1, and finally the temperature controller 7 is activated and the burner 3 stops heating.

When the hot water supply amount Q1 temporarily becomes larger than Q2 (short-term overload), 20°C water also flows into the hot water storage tank 1 from the water supply pipe 5, and the water is mixed with 80°C hot water and 20°C water. The boundary surface H gradually rises.

When Ql<Q2, the boundary surface H inside the hot water storage tank 1
gradually descends.

That is, by providing a circulation pump, the priorities of the water passages are determined as described above, and by providing the hot water tank junction of the piping 10 from the boiler to the hot water storage tank at the top of the hot water storage tank, Temperature hot water can be taken out instantaneously (possible even at the beginning of operation).

■ If the amount of hot water supply falls below the boiler capacity due to load fluctuations, the surplus hot water is stored without being stirred from the top of the hot water storage tank.

■ If the amount of hot water supplied is greater than the boiler capacity, the hot water in the boiler and the hot water in the hot water storage tank will be combined and hot water can be supplied without the temperature dropping.

It has the functions of both an instant water heater and a hot water storage tank.

Furthermore, by providing a temperature regulator in the circulation water pipe 6, the hot water in the entire hot water storage tank can be maintained at a set temperature or higher.

That is, the volume of the hot water storage tank can be effectively used to store hot water, and even if there is an overload in the amount of hot water supplied, the tank volume can be used for a long time with the walking capacity.

As explained above, this idea has a configuration in which the piping from the boiler outlet is connected to the top of the hot water storage tank, the circulating water outlet piping is connected to the bottom of the hot water storage tank, and the water supply pipe is also connected to the bottom of the hot water storage tank. Instant water heaters and hot water storage create an interface between high-temperature water and cold water in the hot water storage tank, which means that hot water can be stored as high-temperature water without mixing with make-up water, making it possible to always provide hot water at a constant temperature. It has the excellent effect of having both the functions of a tank.

[Brief explanation of the drawing]

The figure is a system diagram of a hot water system comprising a boiler and a hot water storage tank according to an embodiment of this invention. 1 is a hot water storage tank, 2 is a boiler, 3 is a burner, 4 is a hot water supply pipe, 5 is a water supply pipe, 6 is a pipe from the hot water storage tank to the boiler, 7
is a temperature controller, 8 is a circulation pump, 9 is a flow rate control valve 1.1
0 is the piping from the boiler to the hot water storage tank, and 11 is the thermometer.

Claims (1)

[Scope of utility model registration request] The hot water storage tank 1 and the boiler 2 are separated, a hot water supply pipe 4 is connected to the upper part of the hot water storage tank 1, a water supply pipe 5 is connected to the lower part, and a burner 3 is installed in the middle of the pipe 6 from the lower part of the hot water storage tank 1 to the boiler 2. A circulation waterway is formed by the pipe 6 and a pipe 10 extending from the boiler 2 to the upper part of the hot water storage tank 1, and a circulation pump 8 and a flow rate control valve 9 are installed in the middle of the circulation waterway pipe. A hot water system comprising a boiler and a hot water storage tank, each of which is inserted into the tank.