JP2551682Y2 - Hot water heater - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water heater, and more particularly, to a structure for supplying two types of hot water having different temperatures.

[0002]

2. Description of the Related Art As a conventional hot water heater of this type, as shown in FIG. 2, a heat exchanger 2 having a combustor 3 and a heat exchanger 4 in a main body 1 and stores heated hot water as shown in FIG. The cistern 5 and the circulation pump 6 are accommodated, and the heat exchange device 2
Loads (not shown) of cistern 5, circulation pump 6, hot water outgoing pipe 7, fan convector, hot water heater for floor heating, etc.
A closed conduit connected to the heat exchange device 2 through the hot water return pipe 8 is formed. The hot water temperature to be supplied to the load is different from about 80 degrees Celsius in the fan convector and about 40 degrees in the floor heating hot water heater, so that a hot water temperature sensor (not shown) is provided to perform combustion control. Therefore, when installing these two types of loads, it is necessary to connect a hot water heater to each of them, and the installation cost becomes high. On the other hand, two sets of hot water heaters are provided on the market, but they are quite expensive.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide an inexpensive hot water heater for supplying two types of hot water.

[0004]

In order to solve the above-mentioned problems, in the present invention, in a hot water heater in which hot water heated by a heat exchange device is temporarily stored in a cistern and then supplied to a load by a circulation pump. Connecting a second cistern to the cis-turn by a connecting pipe, inserting an electromagnetic valve into the connecting pipe, providing a second circulating pump to supply hot water to a second load, and the second circulating pump A temperature sensor is attached to the inlet to control the solenoid valve.

[0005]

The first load is supplied with high-temperature hot water, and the second load is supplied with high-temperature water from the first cis-turn to the second cis-turn by opening of the solenoid valve to reach a predetermined temperature. Is generated and supplied.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hot water heater according to the present invention will be described below with reference to FIG. As shown in the figure, a heat exchanger 2 including a combustor 3 and a heat exchanger 4 in a main body 1, a first cistern 5 for storing heated hot water, and a first circulation pump 6 are housed in the main body 1. The discharge side of the pump 6 is connected to a hot water outgoing pipe 7 connected to a high-temperature load (not shown), and a hot water return pipe 8 serving as a return pipe from the load is connected to the heat exchange device 2 to be connected to the heat exchange device 2. A closed conduit returning to the heat exchanger 2 via the cistern 5, the circulation pump 6, the hot water outgoing pipe 7, the load (not shown), and the hot water return pipe 8 is formed. The hot water outgoing pipe 7 and the hot water return pipe 8 are connected by a bypass pipe 9. The first cistern 5 includes the second cistern 5a as the connecting pipe 10
The solenoid valve 11 is inserted into the connecting pipe 10. A second circulating pump 6a is connected to a lower portion of the second cistern 5a, and a second hot water outgoing pipe 7 is provided at a discharge side thereof.
a is connected, and the second hot water return pipe 8a from the second load is branched by the flow dividing device 13 which is controlled by detecting a water level difference between both cisterns, and is divided into the first and second cisterns 5, 5
a, which opens to the top and returns to the second cistern 5a via the second cistern 5a, the second circulation pump 6a, the second hot water outgoing pipe 7a, the second load, and the second hot water return pipe 8a. Is formed. A temperature sensor 12 is attached to the inlet of the second circulation pump 6a to control the solenoid valve 11. The first and second cisterns 5, 5a
A water supply port 14 and a water supply port cover 15 covering the water supply port 14 are provided above the water supply port 14, and a supply / exhaust tube 16 for supplying / exhausting the combustor 3 is mounted above the heat exchange device 2. .

Therefore, when the hot water heater is operated, the combustor 3 and the first circulating pump 6 operate, and the first cistern 5
The room temperature water circulates through the bypass pipe 9 to become a predetermined high temperature water. Here, the valve on the first load side is opened to supply most of the hot water to the load. When the valve of the second load is opened, the second circulating pump 6a starts and starts supplying the normal-temperature water in the second cistern 5a, the water level decreases, and at the same time, the temperature sensor 12 provided at the inlet detects the predetermined temperature. Is detected, the solenoid valve 11 is opened, and the high-temperature water of the first cistern 5 flows in due to a difference in water level, and is supplied to the load while being raised to a predetermined temperature. When the supply to the second load is started, the return water is diverted by the diverter 13 to create a predetermined water level difference between the first and second cisterns 5 and 5a. Also, since the temperature of the return water is low, the temperature sensor 1
2 detects it and keeps it at a predetermined low temperature water. In this way, high-temperature water and low-temperature water are stably supplied to the respective loads.

[0008]

[Effects of the Invention] As described above, the second cistern is provided in the present invention, and low-temperature water is produced by using high-temperature water. To make the hot water heater that supplies hot water cheaper,
Excellent effects can be achieved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hot water heater according to the present invention.

FIG. 2 is a configuration diagram of a conventional hot water heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Heat exchanger 3 Combustor 4 Heat exchanger 5 First cistern 5a Second cistern 6 First circulation pump 6a Second circulation pump 7 First hot water outgoing pipe 7a Second hot water outgoing pipe 8 First hot water return pipe 8a Second hot water return pipe 9 Bypass pipe 10 Connecting pipe 11 Solenoid valve 12 Temperature sensor 13 Splitter

Claims (3)

(57) [Scope of request for utility model registration] After the hot water heated by the heat exchange device is once stored in a cistern, in a hot water heater supplied to a load by a circulation pump, a second cistern is connected to the cistern by a connecting pipe, An electromagnetic valve is inserted into the connecting pipe, a second circulation pump is provided to supply hot water to the second load, and a temperature sensor is attached to the second circulation pump inlet to control the electromagnetic valve. A hot water heater characterized by the following. 2. The hot water heater according to claim 1, wherein a water level difference is provided between the first and second cisterns. 3. The method according to claim 1, wherein a return line from the second load is provided with a flow dividing device and connected to the first and second cisterns, and the flow dividing device is controlled by the water level difference. Item 2. A hot water heater according to Item 2.