JPH06257770A - Hot water supplier and heater - Google Patents

Abstract

PURPOSE:To improve start up a time of hot water supply by a method in which a heat exchanger for heating is mounted on a hot water supply line side of a hot water supply circuit side. so that a direct heating is made during hot water supply, while an indirect heating is made during heating by driving the heat exchanger for heating is driven while driving the hot water supply circuit. CONSTITUTION:If a hot water supply water switch 29 is turned ON, a flow of water is made through a water supply line 21, a heat exchanger for hot water supply 20, a hot water supply line 22, and a heat exchanger for heating 30 in this order. At the same time, a gas burner 24 is ignited. If a heating operation switch is turned ON, a built-in circulation pump 23 is driven and at the sme time the gas burner 24 is ignited. On the side of a hot water supply circuit, a flow of water is made through the built-in circulation pump 23, the heat, exchanger for hot water supply 20, the hot water supply line 22, the heat exchanger for heating 30, a bypass line 25, the water supply line 21 and the built-in circulation pump 23 in this order, whereby high temperature water about 80 deg.C is circulated. Thus, the hot water supply operation is by a direct heating, and thereby start up is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply / room heating device configured so that hot water supply and heating are performed by a single hot water supply / room heating device.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional hot water supply / heater has a heating return line 2, a heating going line 3, a gas burner 4,
A heating circuit composed of a heat exchanger 1 for heating, a heating return line 2 and a heating outward line 3 are connected by a hot water supply heating line 5 via a three-way valve 7, and a hot water supply heat exchanger 6 is attached to the hot water supply heating line 5. The heating circuit is used for heating. When the hot water supply running water switch 8 is turned on, the heating circuit is driven first, and at the same time, the three-way valve 7 is switched to the hot water heating line 5 side. The supplied water is heated by the hot water supply heat exchanger 6 and discharged from the hot water supply line 10. In the figure, 11 is a heating pump, 12 is a bypass line with a check valve 13, and 14 is a cistern.

[0003]

However, the above-mentioned conventional hot water supply / room heater has the following drawbacks.

A. When the hot water supply / running water switch 8 is turned on when the heating circuit is not driven, first, the heating circuit is driven and the temperature inside the heating circuit rises to, for example, 80 ° C. before sufficient hot water is discharged from the hot water supply line 10. Because it is not possible, it takes time to use it and it is not easy to use.

B. This is not preferable from the viewpoint of resource saving and energy saving because the water is thrown away until it reaches a predetermined hot water supply temperature.

C. Since the hot water supply capacity and the heating capacity are the same, the heating side is over-spec.

An object of the present invention is to propose a hot water supply / room heating machine which does not have the drawbacks described in the above a to c.

[0008]

The structure of the hot water supply / room heating device according to the present invention is as follows.

[0009] The inlet side is connected to the water supply line, the outlet side is connected to the hot water supply line, and the hot water heat exchanger for heating the water flowing inside by being heated by the gas burner, and the in-machine circulation pump are incorporated in the water supply line. On the upstream side where the in-machine circulation pump is installed, a bypass line with a check valve that connects the water supply line and the hot water supply line, and in the hot water supply line, a heating heat installed upstream of the connection part of the bypass line. An exchanger, and a heating return line with a heating pump connected to the inlet side of the heating heat exchanger, and a heating return line connected to the outlet side of the heating heat exchanger and a cistern connected to the heating return line. A hot water supply / heater consisting of.

[0010]

[Action]

Hot water supply operation When the hot water supply / flow switch is turned on, water flows from the water supply line → hot water supply heat exchanger → hot water supply line → heating heat exchanger, and at the same time the gas burner is ignited. As a result, any hot water can be obtained from the hot water supply line. Heating operation When the heating operation switch is turned on, the internal combustion pump is driven and the gas burner is ignited at the same time.On the hot water circuit side, the internal circulation pump → hot water supply heat exchanger → hot water supply line → heating heat exchanger → bypass line → water supply The flow of the line → in-machine circulation pump occurs and the circulating water is heated to about 80 ° C. At the same time, on the heating circuit side, the heating pump is driven, and the flow of the heating outward line → heating pump → heating heat exchanger → heating return line → radiator (not shown) → heating upstream line → heating pump occurs. As a result, heating is performed by indirectly heating the heating medium.

[0011]

Embodiments of the present invention will be described with reference to FIG.

Reference numeral 20 is a heat exchanger for hot water supply, 21 is a water supply line, 22 is a hot water supply line, 23 is an internal circulation pump attached to the water supply line 21, 24 is a gas burner, 25 is a bypass line with a check valve 26, 27 Is a temperature adjustment line installed between the water supply line 21 and the hot water supply line 22,
Reference numeral 8 is a mixing valve, and 29 is a hot water supply / running water switch.

Reference numeral 30 denotes a heating heat exchanger mounted upstream of the bypass line 25 in the hot water supply line 22, which is a so-called water-water type. Reference numeral 31 is a heating return line connected to the inlet side of the heating heat exchanger 30, 32 is a heating forward line, and 33 is a heating pump.

Next, the operation of the above embodiment will be described. Hot water supply operation When the hot water supply / running water switch 29 is turned on, a water flow of the water supply line 21 → the hot water supply heat exchanger 20 → the hot water supply line 22 → the heating heat exchanger 30 occurs, and at the same time, the gas burner 24 is ignited. As a result, burner capacity and mixing valve 28
The hot water temperature set by adjusting the temperature can be discharged from the hot water supply line 22. Heating operation When the heating operation switch is turned on, the in-machine circulation pump 23 is driven and at the same time, the gas burner 24 is ignited, and in the hot water supply circuit side, the in-machine circulation pump 23 → hot water supply heat exchanger 20 →
A flow of the hot water supply line 22 → the heat exchanger 30 for heating → the bypass line 25 → the water supply line 21 → the in-machine circulation pump 23 occurs, and high temperature water of about 80 ° C. circulates. At the same time, on the heating circuit side, the heating pump 33 is driven, and the heating outward line 31 → the heating pump 33 → the heating heat exchanger 30 → the heating return line 32 → the radiator (not shown) → the heating outward line 31.
→ The flow of the heating pump 33 occurs.

When the heating switch is turned on during the hot water supply operation, or when the hot water supply switch is turned on during the heating operation, hot water of a desired temperature is supplied by the mixing valve 28 simultaneously with the heating.

[0016]

As described above, according to the present invention, the heat exchanger for heating is attached to the hot water supply line of the hot water supply circuit to drive the heat exchanger for hot water supply during heating, and the high temperature water heated here is used. The heat exchanger for heating is driven to operate the heating circuit. As a result, the following effects are achieved.

A. Since hot water supply operation is direct heating, waiting time (rise) compared to the conventional indirect method
Is greatly improved.

B. By improving the waiting time for hot water supply, the use of unnecessary water and gas is reduced, which saves resources and energy.

C. Since the heating heat exchanger can be set to the required heating capacity, the problem of over-specification on the heating heat exchanger side is solved.

[Brief description of drawings]

FIG. 1 is an explanatory view of a hot water supply / room heating device according to the present invention.

FIG. 2 is an explanatory view of a conventional hot water supply / room heating device.

[Explanation of symbols]

 20 Heat Exchanger for Hot Water Supply 21 Water Supply Line 22 Hot Water Supply Line 23 Internal Circulation Pump 24 Gas Burner 25 Bypass Line 26 Check Valve 27 Temperature Control Line 28 Mixing Valve 29 Water Flow Switch 30 Heating Heat Exchanger 31 Heating Return Line 32 Heating Forward Line 33 Heating pump 34 cistern

Claims (2)

[Claims] 1. A hot water heat exchanger having an inlet side connected to a water supply line and an outlet side connected to a hot water supply line and heating water flowing inside by being heated by a gas burner; and an in-machine circulation pump provided in the water supply line. A bypass line with a check valve that connects the hot water supply line and the hot water supply line on the upstream side where the built-in circulation pump is installed, and the heating installed on the hot water supply line upstream of the connection part of the bypass line. And a heating heat exchanger with a heating pump connected to the inlet side of the heating heat exchanger, and a heating return line and a heating forward line connected to the outlet side of the heating heat exchanger. A hot water supply / heater consisting of a cistern. 2. The water supply line and the hot water supply line, wherein the upstream side of the water supply line to which the bypass line is connected and the downstream side of the hot water supply line are connected by a temperature adjustment line, and a mixing valve is attached to the connection part of the hot water supply line. Hot water supply / heater described in 1.