JPS5916736Y2 - Hot water storage type hot water heater - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hot water storage type hot water heater that aims to shorten the heating operation start time of a heating device connected to a hot water storage tank and to prevent a temporary decrease in heating capacity.

A conventional hot water storage type hot water heater is explained with reference to FIG. 1. In the figure, 1 is a hot water tank, 2 is a water supply port provided at the bottom of the hot water storage tank 1 for supplying water, and 3 is a water inlet provided at the top of the hot water storage tank 1. 4 is a combustor that is installed at the bottom of the hot water tank 1 and heats the water in the hot water tank 1; 5 is a hot water inlet that penetrates through the inside of the hot water tank 1, and 4 is a combustor that heats the water in the hot water tank 1; This is an exhaust pipe that heats the water in the hot water tank 1 by passing high-temperature gas therethrough.

Further, 6 is a supply pipe that supplies hot water in the hot water storage tank 1 to the heating device 7, 7 is a heating device such as a convector, 8 is a blower, 9 is a radiator, 10 is a return pipe, and 11 is a pump.

In this hot water storage type hot water heater, water in a hot water storage tank 1 is heated by a combustor 4 through the bottom of the hot water storage tank and an exhaust pipe 5, and hot water (high temperature water) is stored in the hot water storage tank 1. It is circulated and supplied to the heating device 7 by the pump 11 via the supply pipe 6 and the return pipe 10 and is used as a heating heat source medium,
In addition, hot water is discharged from the hot water supply port 3 for appropriate use.

However, in this conventional hot water storage type water heater/heater, the water (or hot water) in the hot water storage tank 1 is heated entirely in the tank by the combustor 4, so the water (or hot water) in the hot water storage tank 1 is heated entirely in the tank, so it is heated from the hot water inlet 3 to the bathtub (for example). (not shown), when a large amount of hot water is dispensed at once, water is injected into the hot water tank 1 from the water inlet 2 for the amount of hot water dispensed, and the temperature of the water in the hot water tank 1 decreases. If the tank had a large volume, it would take a considerable amount of time for the water inside the tank to reach a high temperature.

Therefore, when hot water in the hot water storage tank 1 is supplied to the heating device 7 by the pump 11 for heating operation, the heating device 7
The problem is that the heating capacity of the hot water storage tank 1 decreases, and the heating capacity remains decreased until the temperature of the hot water in the hot water storage tank 1 rises, resulting in a long period of time when the heating capacity is decreased.

The purpose of the present invention is to solve these problems with conventional hot water storage type hot water heaters, and for this reason, the present invention uses hot water in the hot water storage tank both for hot water supply and as a heat source for heating equipment. In the hot water storage type hot water heater configured to The hot water heated by the heat exchanger is stored from the upper part of the hot water storage tank, and the supply side of the heating circulation pipe for circulating and supplying the hot water to the heating device is connected to the outlet side of the heat exchanger, and the return side is connected to the heat exchanger. A thermo-valve is connected to the inlet side of the exchanger and installed downstream of the heat exchanger in the heating circulation pipe, so that hot water heated by the heat exchanger is immediately sent to the heating device to start heating operation. In addition, even if a large amount of hot water is discharged from the hot water storage tank at once, hot water is always sent to the heating device to prevent the heating capacity from temporarily decreasing.

Furthermore, since a thermovalve is installed downstream of the heat exchanger in the heating circulation pipe, even a small amount of hot water can be stored in the upper part of the hot water storage tank, resulting in excellent hot water collection performance.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 2, 12 is a hot water storage tank, 13 is a water supply port, 14 is a hot water supply port, 16 is a heat exchanger, 17 is a combustor, 18 is an exhaust pipe, 19 is provided on the outlet side of the heat exchanger 16, and Thermo valve 20 has one end connected to the bottom of the hot water tank 12 and the other end connected to the top of the hot water storage tank 12.The thermo valve 20 has one end connected to the bottom of the hot water tank 12 and the other end connected to the top of the hot water storage tank 12. Heat exchanger 1 with heating circulation pipe located in
6 is interposed.

25 is a supply pipe connected between the outlet side of the heat exchanger 16 and the front side of the thermovalve 19 and the heating device 22; 22 is a heating device such as a compactor; 23 is a blower; 24
is a radiator, 21 is a return pipe connected between the heating device 22 and the inlet side of the heat exchanger 16, and 26 is a pump.

The supply pipe 21 and the return pipe 25 constitute a heating circulation pipe.

Next, to explain the operation of the present invention, the water in the hot water tank 12 is
The heat exchanger 16 is passed through the heating circulation pipe 20 from the lower part.
There, it is heated by the combustor 17 to raise its temperature.

This heated hot water is sent to the upper part of the hot water storage tank 12 through the heating circulation pipe 20 on the outlet side of the heat exchanger 16 due to natural circulation force, so that high temperature hot water is inside the hot water storage tank 12. It is stored sequentially from the top to the bottom.

On the other hand, the hot water heated by the heat exchanger 16 by the pump 26 is sent to the heating device 22 via the supply pipe 25, and after being used for heating, the hot water whose temperature has slightly decreased due to the heating load is sent to the return pipe. 21 and returned to the inlet side of the heat exchanger 16, heated by the heat exchanger 16, and supplied again to the heating device 22 via the supply pipe 25, and this cycle is repeated thereafter.

When the heating operation is started, the hot water on the outlet side heated by the heat exchanger 16 is immediately sent to the heating device 22 via the supply pipe 25, and therefore, from the start of the heating operation until the predetermined heating capacity is achieved. time is extremely short.

Furthermore, if a large amount of hot water is dispensed at once from the hot water tank 12 through the hot water supply port 14 into a bathtub (not shown) during heating operation, and if all the stored hot water is dispensed and poured into the hot water tank 12, the water temperature drops. Also, the heating device 2 is installed on the outlet side of the heat exchanger 16.
Since the supply pipe 21 to 2 is connected, hot water is immediately supplied to the heating device 22, so even if a large amount of hot water is discharged from the hot water storage tank 12 at once, the heating capacity of the heating device 22 will not decrease. It can almost be resolved.

As explained above, according to the hot water storage type water heater/heater of the present invention, in the hot water storage type hot water heater/heater configured to use the hot water in the hot water storage tank both for hot water supply and as a heat source for a heating device, the bottom of the hot water storage tank is A heating circulation pipe is provided with one end connected and the other end positioned above the hot water storage tank, a heat exchanger is interposed in the pipe, and hot water heated by the heat exchanger is stored from the top of the hot water storage tank. At the same time, the supply side of a heating circulation pipe for circulatingly supplying hot water to the heating device is communicated with the heat exchanger outlet side, and the return side is communicated with the heat exchanger inlet side, and the heat exchanger of the heating circulation pipe is connected. Since the thermo-valve is installed further downstream, the heated hot water from the heat exchanger is immediately supplied to the heating device through the supply pipe, so the heating device can maintain the specified heating level from the start of heating operation. It takes an extremely short time to reach its full capacity, and even if a large amount of hot water is dispensed at once from the hot water tank, there is almost no effect on the temperature of the hot water at the outlet side of the heat exchanger. Even if a large amount of hot water is dispensed at once, the heating capacity of the heating device will hardly decrease.

Furthermore, since a thermovalve is installed downstream of the heat exchanger in the heating circulation pipe, even a small amount of hot water can be stored in the upper part of the hot water storage tank, resulting in excellent hot water collection performance.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of a conventional hot water storage type water heater/heater, and FIG. 2 is a system diagram showing an embodiment of the hot water storage type hot water heater/heater according to the present invention. 12...Hot water tank, 13...Water inlet, 1
4...Hot water inlet, 16...Heat exchanger, 1
7... Combustor, 19... Thermo valve, 20... Heating circulation pipe, 25...
・Supply pipe, 22... Heating device, 21...
・Return pipe, 26...pump.

Claims (1)

[Scope of utility model registration request] In a hot water storage type hot water heater configured to use hot water in a hot water storage tank both for hot water supply and as a heat source for a heating device, one end is connected to the bottom of the hot water storage tank and the other end is located at the top of the hot water storage tank for heating. A circulation pipe is provided, a heat exchanger is interposed in the pipe, and the hot water heated by the heat exchanger is stored from the upper part of the hot water storage tank, and a heating circulation is provided for circulating and supplying hot water to the heating device. A hot water storage type characterized in that the supply side of the pipe communicates with the heat exchanger outlet side and the return side communicates with the heat exchanger inlet side, and a thermovalve is interposed in the heating circulation pipe downstream of the heat exchanger. Hot water heater.