JPH022058B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a central heating and hot water supply system for each region or residential building.

There are two types of conventionally known centralized heating and hot water supply systems of this type:

One of them, as shown in Fig. 2, is to pump hot water generated by a single hot water generation heat source device 01 to a pump 0.
A plurality of hot water intake circulation pipes 05A, 05 are connected to the pipe 03 for forced circulation through the pipe 2 for each hot water consumer.
B...05N are connected in parallel, and heating radiators 09A, 09B...09N are connected to these hot water intake circulation pipes 05A, 05B...05N, respectively, while each of the hot water intake circulation pipes 05A ,0
5B...05N and correspondingly provided,
Water supply pipe 04A, 04B...04N to hot water supply pipe 06
Heat exchangers 08A, 08B...08N are provided between the hot water supply pipes leading to the hot water supply pipes A, 06B...06N, and heat exchangers 08A, 08B...08N are provided to indirectly exchange heat between the hot water taken in and the hot water supply water. It is a two-pipe type configured to directly use the hot water generated by 01 for heating and to indirectly use the hot water for hot water supply. It is a four-pipe type in which the water supply equipment and hot water supply equipment are completely separated as lines.

In the former two-pipe type, the water for hot water supply is very low temperature water, and requires a large amount of heat instantaneously as hot water supply output. Therefore, in order to obtain hot water for hot water supply at around 60°C, which is the minimum required hot water temperature to be able to be used as hot water for the bathtub, it is necessary to supply hot water at around 80°C to the forced circulation pipe 03 all year round. or the heat exchanger 08A,
It is necessary to make the capacity of 08B...08N extremely large, and when circulating hot water at around 80℃ all year round, there is a lot of heat radiation loss especially when hot water is not being supplied, the energy for generating hot water is wasted, and running costs increase. In addition, when using a large-capacity heat exchanger, the overall equipment cost increases and the space required for its installation also increases, which is a practical drawback.

On the other hand, the latter four-pipe type has an advantage over the former two-pipe type in terms of running costs because the circulating hot water can be set at a temperature suitable for both heating and hot water supply. Two systems are required, one for heating and one for hot water supply, and at least twice as many hot water forced circulation pipes and associated equipment are required as for the two-pipe type, which has the disadvantage that the overall equipment cost is enormous. This is extremely disadvantageous in terms of piping construction, especially considering that the equipment covers a relatively wide area, such as a region or a residential building.

In view of the above circumstances, the present invention is of a two-pipe type that is advantageous in terms of equipment cost and piping construction.
The purpose is to overcome the drawbacks and difficulties of the conventional two-pipe type.

The characteristic configuration of the central heating and hot water supply equipment according to the present invention, which was developed to achieve the above object, is that a pipe line is configured to forcefully circulate hot water generated by a heat source device for generating hot water to the heat source device via a pump. established,
At the same time, a water supply pipe is connected to the return pipe section of the hot water forced circulation pipe near the heat source equipment, and a plurality of hot water intake circulation pipes are connected in parallel to each hot water consumer in the hot water forced circulation pipe. A hot water supply pipe is connected to each hot water intake circulation pipe, and a heating heat medium circulation pipe is provided in a state in which a heating heat medium is sealed in each consumer unit, and a heating heat medium circulation pipe corresponding to the heating heat medium is sealed in the above-mentioned customer unit. A heat exchanger for indirectly exchanging heat between the introduced hot water and a heating heat medium is provided between the hot water intake circulation pipe, and a radiator is connected to each of the heating heat medium circulation pipes. It is in what is being done.

In other words, to summarize the above characteristic configuration in other words,
The present invention uses the hot water taken in from the hot water forced circulation pipe for the heat source equipment into the circulation pipe for each hot water consumer directly as hot water for hot water supply, while requiring only 1 instantaneously required amount of heat compared to hot water supply. /5 is fine,
In addition, compared to the case of hot water supply, the necessary and sufficient effect can be obtained by adopting the floor heating method described later, for example, even at a lower temperature.Heating is performed by indirectly using the above-mentioned hot water taken in as a heating source. Accordingly, the temperature of the hot water to be circulated through the forced circulation pipe may be around 60°C, which is the minimum hot water temperature that can be used sufficiently to pour hot water into a bathtub, as described above. Therefore, although the two-pipe type is advantageous in terms of overall equipment cost and piping construction compared to the four-pipe type, which is one of the conventional examples described above, Compared to pipe-type systems, there is less heat radiation loss and running costs can be significantly reduced, and the capacity of the heat exchanger for heating is also small, reducing equipment costs. be.

Hereinafter, an embodiment of the present invention will be described in detail with reference to Fig. 1. In the drawing, 1 is a heat source device (hot water boiler) for generating hot water that has a built-in gas burner or electric heater, and is a hot water boiler that constantly produces hot water of about 60°C. It has a controller that generates. Reference numeral 3 denotes a circulation pipe for hot water generated by the heat source device 1, and the hot water circulation pipe 3 includes a large-capacity pump 2a for supplying the necessary hot water circulation flow rate during the winter season when heating is performed, and a large-capacity pump 2a for supplying hot water during the non-winter season. The hot water forced circulation pump 2, which is composed of a pump 2b with a small capacity sufficient to cover the circulation flow rate, is composed of the two types of pumps 2 having different capacities.
a, 2b are connected in a state where they can be selectively used, and a water supply pipe 4 having a check valve 10 is provided in a return pipe section 3B of the hot water forced circulation pipe 3 near the heat source device 1. It is connected. 5A, 5B...
...5N is a plurality of hot water intake circulation pipes for each hot water consumer unit, that is, a dwelling unit, which are connected in parallel to the hot water forced circulation pipe 3, and each of these hot water intake circulation pipes 5A , 5B...5N are connected to hot water supply pipes 6A, 6B...6N each having hot water supply valves 11A, 11B...11N and hot water meters 12A, 12B...12N, respectively. 7
A, 7B...7N are heating heat medium circulation pipes formed to enclose a heating heat medium (mainly water) in the consumer unit (dwelling unit unit), and each of these pipes 7A, 7B...7N respectively have expansion tanks 13A, 13B...13N, forced circulation pumps 14A, 14B...14N that are started and stopped by remote switches not shown, and a calorimeter 15A,
15B...15N are interposed, and an arbitrary number of radiators 9A, 9B...9N are provided for each dwelling unit.
are connected in parallel. The heat radiator 9
A, 9B...9N, even if it is a type such as a fan convector that causes forced convection of the air in the heated room and heats and raises the temperature of the convective air through indirect heat exchange with a heating medium, It can be any type of panel for floor heating systems that are placed closely on the surface to heat the room from below the floor, but it is easier to achieve comfortable heating if the temperature distribution and heating medium is around 50℃. A shaped one is more suitable. 8A, 8B
...8N is the circulating hot water introduced into the circulation pipes 5A, 5B...5N and the circulation pipes 7A, 7B.
...A heat exchanger that indirectly exchanges heat with the heat medium sealed in 7N, and these heat exchangers 8A, 8B...
...The presence of 8N ensures the quality of the hot water supply water that is directly used by the circulating hot water, and the radiator 9
A, 9B...9N, etc., have fewer restrictions on pressure resistance and materials for heating side equipment. 16A, 16B...1
6N is each hot water intake circulation pipe 5A, 5B mentioned above.
...It is configured so that unnecessary heat radiation can be avoided by keeping the valve installed in the 5N closed except during heating. The temperature values entered in Figure 1 are hot water temperatures, and the values in parentheses are temperatures during heating.

Next, the most common functions of the centralized type heating and hot water supply system constructed as described above are listed in order along the flow of hot water as follows.

Heat source unit 1 generates hot water of about 60℃.

Pump 2 [Use 2a for heating, 2b for other times. ] The hot water is forcedly circulated within the forced circulation pipe 3.

Valves 16A, 16B...16N are opened,
Hot water is taken in and circulated in the circulation pipes 5A, 5B...5N of each dwelling unit, while pumps 14A, 14B...1
4N is started and circulation pipes 7A, 7B...7N
The enclosed heating medium is forcedly circulated inside.

The heating medium is heated through indirect heat exchange with the above-mentioned intake circulating hot water through the heat exchangers 8A, 8B...8N, and the room is heated by the heat dissipation action in the radiators 9A, 9B...9N. .

When hot water supply is required, valves 11A, 11B...11
By opening N, circulating hot water is directly tapped.

Water equivalent to the amount of hot water used is supplied through the water supply pipe 4 into the forced circulation pipe 3, and as described above, hot water of about 60° C. is generated by the heat source device 1.

When not heating, valves 16A, 16B...16N
keep it closed.

[Brief explanation of drawings]

FIG. 1 is a piping system diagram according to an embodiment of the present invention, and FIG. 2 is a piping system diagram of conventional equipment. 1...Heat source machine, 2...Pump, 3...Hot water forced circulation pipe, 4...Water supply pipe, 5A, 5B...5N...
Circulation pipe for hot water intake, 6A, 6B...6N...Hot water pipe, 7A, 7B...7N...Water circulation pipe for heating,
8A, 8B...8N...Heat exchanger, 9A, 9B...9
N... Heat sink.

Claims (1)

[Scope of Claims] 1. A pipe line 3 for forcedly circulating hot water generated by a hot water generation heat source device 1 to the heat source device 1 via a pump 2 is provided, and a return pipe of this hot water forced circulation pipe line 3 is provided. A water supply pipe 4 is connected to a location near the heat source device 1 in the passage section 3B, and a plurality of hot water intake circulation pipes 5A, 5B...5N are connected in parallel to the hot water forced circulation pipe 3 for each hot water consumer. and hot water supply pipes 6A, 6B...6N were connected to these hot water intake circulation pipes 5A, 5B...5N, respectively, and the heat medium for heating was sealed in each consumer unit. Heating heat medium circulation pipes 7A, 7B
Heat exchangers 8A, 8B...8N that indirectly exchange heat between the hot water taken in and the heating heat medium between ......7N and the corresponding hot water intake circulation pipes 5A, 5B...5N A centralized heating and hot water supply facility characterized in that the heating medium circulation pipes 7A, 7B...7N are connected to radiators 9A, 9B...9N, respectively. 2. Claim 1, wherein the heat radiators 9A, 9B...9N are panel-shaped to be laid on the floor.
Centralized heating and hot water supply equipment as described in . 3. The centralized type heating and hot water supply equipment according to claim 1, wherein the pump 2 is comprised of two types of pumps 2a and 2b of different capacities, which are provided so that they can be used selectively.