JPH05118566A - Warm water room heater - Google Patents

Abstract

PURPOSE:To obtain a warm water room heater for simultaneously heating high and low temperature side loads. CONSTITUTION:A three-way mixture valve 9 is disposed on the way of a circulating circuit 3 for room heating warm water to guide warm water of a heat exchanger 4 to become a hot water heater to a heat radiator 7 of a high temperature side load by a warm water circulation pump 1, a low temperature side warm water circulation pump 11 is connected to one side of the valve 9, and a floor heating panel 13 to become a low temperature side load is connected to the other of the valve 9. This return tube is guided to the pump 11 as a second circulating circuit 10, low temperature water and high temperature water are mixed by a low temperature water return and a high temperature water pouring at the valve 9, and warm waters of temperatures required from a controller are supplied to respective systems.

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 for selectively using hot water obtained in a water heater as high temperature water such as a radiator and low temperature water such as floor heating.

[0002]

2. Description of the Related Art Conventionally known hot water heaters of this type send hot water from a heat source unit (water heater) to a high temperature side once and dissipate the heat with a radiator, and return low temperature water to a low temperature side for use. Or a thermo valve having a thermo mechanism for discharging hot water of a set temperature from the hot water outlet as in Japanese Utility Model Laid-Open No. 63-5305, and the hot water for heating is forced by a pump at the water inlet of this thermo valve. The circulating hot water is connected to the upstream side of the heat exchanger in the circulating hot water circulation path, the hot water inlet is connected to the downstream side of the heat exchanger, and the hot water outlet of the thermovalve has a different set temperature from the downstream side of the heat exchanger. The types that get

[0003]

However, in this case, in the former case, the temperature of the hot water on the low temperature side is not stable due to the load balance between the high temperature and the low temperature, and the load temperature on the low temperature side (for example, the floor surface temperature of the floor heating panel) becomes unstable. , There was a problem with comfort. Further, even if the number of systems on the low temperature side increases, hot water having the same temperature is supplied to all of the systems, so that there is a drawback in that there are rooms where the floor temperature is too low, rooms where the temperature is too high, and the like. In the latter, there is only one circulation pump, and high temperature water and low temperature water are mixed and circulated while adjusting the temperature simply by mixing the valves, so the temperature of the hot water is limited by the load state of the circuit on the high temperature side, and the low temperature side Moreover, it has been difficult to obtain a desired temperature.

In view of the above situation, the present invention solves the drawbacks that the hot water temperature on the low temperature side is unstable and the hot water temperature on the whole system is the same, and furthermore, the low temperature side is controlled for each system and desired for each terminal. It is an object of the present invention to provide a hot water heating device adapted to supply the temperature of.

[0005]

According to the present invention, there is provided a first circulation circuit for heating hot water comprising a first circulation pump, a heat exchanger having a heat source, and a first radiator, a second circulation pump, and A second circulation circuit of heating hot water composed of a second radiator;
A hot water temperature adjusting device for causing the hot water of the first circulation circuit to flow into the second circulation circuit according to the hot water temperature of the second circulation circuit, and for causing the hot water of the second circulation circuit to flow out to the first circulation circuit; It is equipped with.

[0006]

With the above structure, the hot water of the heat source unit (water heater) is supplied to the high temperature spout and the high temperature side of the three-way valve, and the high temperature side hot water passes through the high temperature load (radiator) and becomes hot. Return to the side return door. The high-temperature water on the three-way valve side is mixed with the low-temperature side return hot water, and is supplied to the low-temperature load (floor heating panel) from the low-temperature side spout at the set temperature and returns to the low-temperature side return port. In this case, the second
Since the closed circuit can form a closed circuit independent of the first closed circuit, the hot water in the closed circuit and the hot water in the second closed circuit are exchanged continuously or as needed, while the first closed circuit is being replaced. The hot water temperature of the second circulation circuit can be independently adjusted irrespective of the hot water temperature of. Further, by mounting one (1) low temperature side pump and a plurality (n) of three-way valves in parallel, it is possible to separately control the temperatures of the low temperature spouts of n systems.

[0007]

The present invention will be described below with reference to the drawings of the embodiments.

FIG. 1 is a system diagram of a hot water heating system. Reference numeral 1 denotes a first circulation pump (hereinafter referred to as a hot water circulation pump) arranged in a first circulation circuit 3 of a pipe from a hot water tank 2. The tip of the circulation pump 1 is connected to a heat exchanger 5 which is a water heater equipped with a heat source 4 of a gas burner, and the tip of the heat exchanger 5 is a heat radiator 7 which serves as a plurality of high temperature loads via a header 6.
The heat exchanger 5 and the header 6 into a branch pipe line separated from the intermediate pipe line of the heat exchanger 5 and the header 6. A three-way mixing valve 9 is provided. A second circulation pump 11 (hereinafter referred to as a low temperature side hot water circulation pump) connected to a second circulation circuit 10 separately provided from the hot water tank 2 faces one of the three-way mixing valves 9, and the three-way mixing valve A floor heating panel 13 serving as a plurality of low temperature side loads is connected to the other side of 9 via a header 12, and the other end of the floor heating panel 13 is connected to the low temperature side hot water circulation pump 11 via a low temperature side return header 14.
Returning to FIG. 1, the hot water temperature adjusting device 1 is composed of the three-way mixing valve 9 and the hot water thermistor 15 attached to the tip thereof.
It becomes 6. 17 is a controller, which is a terminal controller 1
I am trying to receive 8 signals.

The operation will be described below. First, in the hot water heating in the two directions of the high temperature side and the low temperature side, the hot water produced by the heat exchanger 5 serving as a water heater is a three-way mixing valve by the hot water circulation pump 1. 9 and the high temperature side spout 6a of the header 6.
The high-temperature water supplied to the high-temperature side pouring port 6a flows into a radiator (fan convector) 7 serving as a high-temperature side load, and warms a predetermined room or the like with hot water. The hot water that has been heat-exchanged here passes through the return port 8a of the high-temperature side return header 8 to pass from the hot water tank 2 through the hot water circulation pump 1 to be heated by the heat exchanger 5 again.

On the other hand, the high temperature water sent to the three-way mixing valve 9 side is mixed with the low temperature water sent from the low temperature water side hot water circulation pump 11 by the three way mixing valve 9, and the mixed water temperature is detected by the hot water thermistor 15. Then, the throttle of the three-way mixing valve 9 is adjusted by the controller 17 so as to reach the preset temperature. The low-temperature water, which is an appropriate mixture of the high-temperature water, is sent to the floor warming panel 13, which serves as a low-temperature side load, to perform predetermined floor heating. The low-temperature water that has undergone heat exchange with the floor warming panel 13 is sent again from the low-temperature side warm water circulating pump 11 to the three-way mixing valve 9 through the return port 14a of the low-temperature side return header 14. A part of the water is returned to the hot water tank 2 and becomes a flow of hot water that is heated together with the high-temperature return hot water by the heat exchanger 5 that serves as a water heater again.

That is, since the low temperature side load is provided with another circulation pump (low temperature water side warm water circulation pump 11),
For example, when hot water of 40 ° C. is desired, hot water may be gradually introduced while the temperature is detected by the water temperature sensor 11 so as to be 40 ° C. (hot water is supplied from the circulation circuit 3). When the predetermined low temperature water is sufficient, the high temperature water side of the three-way mixing valve 9 can be kept closed and the low temperature water side warm water circulation pump 11 can be driven to independently circulate in the circulation circuit 10. Note that the hot water surplus from this replenishment is returned to the hot water tank 2.

[0012]

As described above, in the hot water heating apparatus of the present invention, circulation pumps are provided in the circulation circuit for high-temperature water and the circulation circuit for low-temperature water to form independent closed circuits, and the continuous circuits are connected. The hot water of the circulation circuit for high-temperature water and the circulation circuit for low-temperature water are switched as necessary or as necessary, so that regardless of the load state on the high-temperature side, the hot water at the temperature that was in the load state on the low-temperature side It is possible to supply, for example, as in the above-described embodiment, if hot water having a temperature corresponding to the control signal of each terminal is supplied to each terminal,
There is no problem even if there is some fluctuation in hot water temperature on the high temperature side, but on the low temperature side of the floor heating room, etc., the water temperature can be controlled without changing the flow rate due to the floor warming room temperature, etc., and comfortable heating can be performed.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Hot Water Circulation Pump 3 First Circulation Circuit 4 Heat Source 5 Heat Exchanger 6 Hot Water Tank 7 Radiator 9 Three-way Mixing Valve 10 Second Circulation Circuit 11 Low Temperature Side Hot Water Circulation Pump 13 Floor Heating Panel 15 Hot Water Thermistor 16 Hot Water Temperature Adjustment apparatus

Claims (1)

[Claims] 1. A first circulation circuit of heating hot water comprising a first circulation pump, a heat exchanger having a heat source, and a first radiator, and a heating comprising a second circulation pump and a second radiator. A second circulation circuit of the hot water for use and the warm water of the first circulation circuit are caused to flow into the second circulation circuit in accordance with the temperature of the hot water of the second circulation circuit, and the warm water of the second circulation circuit is changed to the first circulation circuit. A hot water heating device comprising: a hot water temperature adjusting device for flowing out to a circulation circuit.