KR100651642B1 - System of 4-Fluid Plate Heat Exchanger of Domestic Boiler Using Cogeneration - Google Patents

Abstract

A system of a plate-type heat exchanger of four liquids of a home boiler using cogeneration is provided to supply the hot water desired by a consumer by using the cogeneration heat source and the heat exchanging plate formed with eight ports and maximizing the hot-water supply and heating performance. A system of a plate-type heat exchanger(10) of four liquids of a home boiler laminated with plural heat exchanging plates(16) by using a first heat source supplied from a cogeneration system comprises a port through which the first heat source is flowed into the heat exchanging plate and discharged; a port through which the fuel and water supplied from the cold water pipe are flowed into the heat exchanging plate and discharged; a port through which the heating water in the boiler is flowed into the heat exchanging plate and discharged; and a port through which the second heat source supplied from the boiler is flowed into the heat exchanging plate and discharged. The fuel and water and the heating water are heat-exchanged with the first heating source.

Description

System of four-fluid plate heat exchanger of domestic boiler using cogeneration

1 is a view showing the configuration of an 8-port-4 fluid plate heat exchanger system of a domestic boiler using cogeneration according to an embodiment of the present invention.

2 is a view showing a process in which heat exchange (hot water heat exchanger, heating heat exchanger, hot water reheat heat exchanger) is performed in the 8 port-4 fluid plate heat exchanger system shown in FIG.

FIG. 3 is a view showing the structure of a plate heat exchanger in which heat exchange shown in FIG. 2 is performed.

4A and 4B are views each showing the shape and structure of the heat exchange plates (A type and B type) shown in FIG.

5 is a view showing an example in which the 8-port-4 fluid plate heat exchanger system according to the present invention is installed in a home of 24 pyeong in an apartment complex.

6 is a view showing in detail the arrangement of the heat exchanger plate shown in FIG.

<Description of the symbols for the main parts of the drawings>

10: plate heat exchanger 12: cogeneration heat source

14: Front cover 16: Heat exchanger plate

16a: type A heat exchange plate 16b: type B heat exchange plate

18: rear cover 100: hot water supply heat exchange zone

200: heating heat exchange zone 300: hot water reheat heat exchange zone

A1: cogeneration heat source inlet A2: cogeneration heat source inlet

B1: Hot water inlet B2: Hot water outlet

C1: heating inlet C2: heating outlet

D1: Boiler Water Inlet D2: Boiler Water Outlet

a: first port b: second port

The present invention relates to a plate heat exchanger system, and more particularly to a system of an 8-port-4 fluid plate heat exchanger of a domestic boiler using a district heating system or a cogeneration system.

In general, two heating systems are adopted in apartment complexes such as apartment complexes, and one heating system employing individual heaters in each house, and the other central heating system for providing heating and hot water in the center. There is a way.

The heat demand source adopting the centralized heating, that is, the heating method of the apartment complex, etc., heats water using fuels such as BC oil, LNG, LPG, and the like. It is in turn intermittent to provide hot water to each home in the apartment complex.

The conventional central heating method is to produce water or steam in a boiler, and heat the produced steam to high temperature water through a heat exchanger to provide hot water, which uses a large number of boilers and exchanges steam for hot water. In this way we can see that the heat loss is quite high.

As one of the measures to solve such drawbacks, the combined heat and power plant system with high energy efficiency has been proposed as an alternative. The cogeneration is an integrated energy system that generates power and heat simultaneously from a single energy source. In general, the cogeneration system operates an energy system in which a high temperature part is used as power and a low temperature part is used as heat.

However, the combined heat and power generation has a disadvantage in that the thermal efficiency is significantly lower than the capacity of the facility, and it is not possible to provide hot water (hot water and heating) with a uniform temperature to each household in the apartment complex. For example, in the case of a multi-family house, the temperature difference between the upper and lower floors frequently occurs, causing unbalanced heating. Also, since the hot water is supplied to the household where the young and the elderly live, the temperature required by each household is the same. There is a problem that can not match the hot water.

Accordingly, an object of the present invention for solving the above problems is to provide a plate heat exchanger system of a domestic boiler that can implement four-fluid heat exchange by using a cogeneration heat source and using a heat exchanger plate having eight ports. .

Another object of the present invention is to provide a system of four-fluid plate heat exchanger of a domestic boiler using cogeneration to maximize the efficiency of hot water supply and heating.

Still another object of the present invention is to provide a system of a four-fluid plate heat exchanger of a domestic boiler using a cogeneration system that can supply hot water at a temperature required by consumers by replenishing the heat source when insufficient heat source is supplied from the cogeneration system. Is in.

It is still another object of the present invention to provide a four-fluid plate heat exchanger for a domestic boiler using cogeneration to provide hot water at a temperature required by residents in an apartment complex using a district heating system or a cogeneration system. In providing.

The present invention for achieving the object as described above, using a primary heat source supplied from the district heating system or cogeneration system and constitutes a plate heat exchange system of a household boiler in which a plurality of heat exchange plates are laminated and combined, Respective ports for introducing and discharging a heat source into and out of the heat exchange plate, respective ports for the time water supplied from the water pipes to flow into and out of the heat exchange plate, and heating water in the boiler flows into the heat exchange plate. Each port for discharge and the secondary heat source supplied from the boiler is characterized in that it further comprises a respective port for entering and exiting the heat exchange plate.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

DETAILED DESCRIPTION In the following detailed description, one representative embodiment of the present invention is set forth in order to achieve the above technical problem. And other embodiments that can be presented with the present invention are replaced by the description in the configuration of the present invention. Like reference numerals in the drawings refer to like elements.

Meanwhile, the term 'cogeneration heat source' used in the present invention refers to a primary heat source (Heating Source, Medium) supplied from a primary heat source supply unit as a heat source supplied from a medium temperature water or a district heating system supplied from a cogeneration system. .

In addition, the term 'A-type heat exchanger plate and B-type heat exchanger plate' used in the present invention means a heat exchanger plate having six ports selectively formed thereon and a “V” shaped heat transfer path formed on the surface thereof. B type means each heat exchanger plate in which the electrothermal flow path is formed in the opposite direction. In addition, the term 'first port and second port' formed in the heat exchange plate means a hole having a different diameter, that is, a hole of the first port means a larger diameter than the hole of the second port.

1 is a schematic view showing the configuration of an 8-port-4 fluid plate heat exchanger system of a domestic boiler using cogeneration according to an embodiment of the present invention.

1 illustrates a configuration of a plate heat exchanger 10 in which heat exchange is performed using only four ports among six ports. That is, the plate heat exchanger 10 has ports A1 and A2 through which the cogeneration heat source is supplied and discharged, and each of the ports B1 and B2 through which the hot water is exchanged by the cogeneration heat source and discharged by the cogeneration heat source. It consists of each port (C1, C2) in which water in the boiler is introduced and the water warmed by the cogeneration heat source is discharged, and the ports (D1, D2) in which the boiler water contained in the tank of the boiler installed at home is introduced and discharged. Such a technical configuration will be easily understood by the detailed description of FIGS. 2 to 4 to be described later.

As shown in FIG. 2, the cogeneration heat source inlet A1 supplies a heat source (or heavy hot water) supplied from the cogeneration heat source unit 12 to the inside of the plate heat exchanger 10, preferably a plurality of heat exchange plates ( 16 is a port for supplying the stacked passages, and the cogeneration heat source outlet A2 is a port through which the hot water passed through the passages formed on the heat exchange plates 16 (that is, the port and the V-shaped heat transfer passage) is discharged. At this time, the middle temperature water introduced through the cogeneration heat source inlet (A1) is made of the hot water time and heat exchange (100), and the heat and heat exchanger (200) is made and then discharged through the cogeneration heat source outlet (A2) and the cogeneration heat source again The part 12 is recovered.

Hot water inlet (B1) is connected to the water inlet pipe is a port for supplying the water to the passage of the plurality of heat exchange plate 16 is stacked, the hot water outlet (B2) by the above-mentioned high temperature hot water (that is, cogeneration heat source) The hot water is discharged from the pot. The hot water discharged through the hot water outlet B2 is hot water heated to a temperature required by the consumer, and if the time water does not reach the desired temperature by the cogeneration heat source, the temperature is insufficient by the boiler water. Warmed, which will be readily understood by the detailed description which follows.

Heating inlet (C1) is a port for supplying the water contained in the boiler installed in the home toward the heat exchange plate 16, heating outlet (C2) is a port for discharging the water heat exchanged by the cogeneration heat source described above to the piping line of each room. . That is, when water is supplied through the heating inlet (C1), the water is heat exchanged by the middle temperature water introduced through the cogeneration heat source inlet (A1), the water of the heat exchanged appropriate temperature is the heating outlet ( Through C2) it is discharged to the piping line of each room.

The boiler water inlet D1 is a port for supplying water (ie, a secondary heat source) (hereinafter referred to as 'boiler water') in the boiler toward a passage in which a plurality of heat exchange plates 16 are stacked, and the boiler water outlet D2. ) Is a port for discharging the boiler water back into the boiler. The boiler water supplied through the boiler water inlet D1 is heat-exchanged once again when the time flowed in through the hot water inlet B1 is not warmed up to the temperature set by the cogeneration heat source, so that the boiler water is matched to the set temperature. Heat so that For example, when the consumer sets the temperature of the hot water supply to 50 ° C., even though the water flowed through the hot water inlet B1 is exchanged with the cogeneration heat source 100, the temperature of the time water is only 40 ° C. instead of 50 ° C. If not, the water flows along the passage (a passage connecting the hot water inlet B1 and the hot water outlet B2) while the heat exchanger 300 is once again exchanged with the boiler water introduced through the boiler water inlet D1, which is set by the consumer at 50 ° C. Warmed to the temperature of the discharged through the hot water outlet (C2). That is, the time water introduced through the hot water inlet B1 is heat-exchanged in the hot water supply heat exchange zone 100 and the hot water reheat heat exchange zone 300, and the time water fits the temperature set in the hot water heat exchange zone 100. When it is heated so that the heat exchange is not automatically made in the hot water reheat heat exchange zone (300).

On the other hand, the structure of the plate heat exchanger 10 that is subjected to the heat exchange (that is, hot water heat exchange and heating heat exchange and hot water reheat heat exchange) as described above is as shown in FIG. Referring to FIG. 3, the plate heat exchanger 10 includes a front cover 14 having four ports of different diameters, and a heat exchange plate 16 having eight ports formed therein and selectively using these ports. It consists of a rear cover 18 formed with four ports.

That is, the front cover 14 has two holes formed at the top and bottom, respectively, the first port a to which the cogeneration heat source is supplied (A1) and the second port (b) to which the heating water is discharged (C2). Are formed respectively, and a first port a through which the cogeneration heat source is discharged (A2) and a second port (b) through which time water is introduced (B1) are formed. In addition, the rear cover 18 is formed with a first port (a) through which the boiler water is discharged (D2) at the upper side, and the first port (a) through which the boiler water is introduced (D1) and the time water heat exchanged to both sides is discharged ( A second port (b) to be B2) and a second port (b) to be heated (C1) are formed. At this time, the first port (a) is preferably formed of 22Ø and the second port (b) is preferably formed of 13Ø.

On the other hand, the heat exchange plate 16 has a structure in which a plurality of plates are stacked, which is coupled to each other by a brazing or gasket to form a passage. That is, as shown in Figs. 4a and 4b, the heat exchange plate 16 is composed of an A type heat exchange plate 16a and a B type heat exchange plate 16b, which are opposite to each other only in the 'V' type heat transfer flow path. And the rest of the configuration and shape are the same. In addition, six ports (a, b) are formed in the heat exchange plates (16a, 16b) and these ports (a, b) are used for the use of the plate heat exchanger 10 (for example, the size of the boiler or the number of square meters of the apartment , Depending on the output capacity of the cogeneration system). The number of plates is determined accordingly (ie, the holes are formed by selectively passing through the first and second ports a and b). In this case, the first and second ports a formed in the heat exchange plate 16 are formed. When drilling the hole of, b), the first port a which is a large hole is drilled at the point where the heat exchange is performed, and the second port b which is the small hole is drilled when the heat exchange is not performed. As described above, the first and second ports a and b are preferably formed of 22Ø and 13Ø.

5 and 6 are views showing a state in which the 8-port-4 fluid plate heat exchanger system of the present invention is installed in a home of 24 pyeong in a multi-family housing complex. Referring to the drawings, a total of 16 heat exchange plates are installed. Preferably, the front cover 14 and the rear cover 18 are placed on both sides, and 16 heat transfer plates 16 are located therebetween. In this case, the covers 14 and 18 and the heat transfer plates 16 are laminated to each other by brazing.

As described above, the front cover 14 and the rear cover 18 have four ports a and b formed thereon, and the heat transfer plates 16 disposed therebetween have respective flow paths as shown in FIG. 6. The first and second ports (a, b) are selectively formed to fit the passage (heat passage) as shown in 2). According to the arrangement of the heat exchanger plate 16 (that is, the arrangement of the first and second ports), the four fluids (that is, the cogeneration heat source and the time water and the egg waterproofing and the boiler water) are supplied and discharged. It is possible to provide hot water and heating water of a required temperature.

In addition, the heat exchange process of the plate heat exchanger 10 illustrated in FIGS. 5 and 6 will be described below.

First, the heat source (or the hot water) introduced through the cogeneration heat source inlet A1 flows into the tenth heat exchange plate 10, and then heat cogeneration through the cogeneration heat source outlet A2 formed in the zeroth front cover 14. The heat source unit 12 is recovered. In this case, the cogeneration heat source flows from the top to the bottom in the second, fourth, sixth, eighth, and tenth heat transfer plates 16, and heat exchanges with the time water introduced through the hot water inlet B1.

Next, the water flowing through the hot water inlet B1 is sequentially passed through the sixteen heat exchange plates 16, and then discharged to the outside through the hot water outlet B2 formed in the seventeenth rear cover 18. In this case, the time water flows up from the bottom in the third and fifth heat transfer plates 16, and thus heat exchanges with the cogeneration heat source to be heated to a temperature required by the consumer. In addition, the time water flows from the top to the bottom in the heat exchange plate 16 of the 11th, 13th, and 15th heat exchange with the boiler water once more.

In addition, the heating water supplied from the inside of the boiler 1 flows in through the heating inlet C1 formed in the rear cover 18, and the introduced heating water flows from the 17th to the 0th front cover 14 in reverse. It is discharged through the heating outlet (C2). In this case, the heating water flows from the bottom to the ninth and seventh heat exchange plates 16, and thus the heating water is heat-exchanged with the cogeneration heat source.

Finally, the boiler water supplied through the boiler water inlet D1 formed in the rear cover 18 flows into the twelfth heat exchange plate 16 from the 17th to the twelfth, and then passes through the twelfth to the sixteenth. Through the boiler water outlet (D2) formed in the seventeenth rear cover 18 is discharged into the boiler (1). In this case, the boiler water is heat-exchanged with the time water supplied through the hot water inlet B1 from the 12th, 14th, and 16th heat exchange plates 16.

As described above, the present invention can maximize the efficiency of hot water supply and heating by using a cogeneration heat source and implementing a four-fluid heat exchange using a heat exchanger plate having eight ports, and in particular, there is a shortage of heat source supplied from cogeneration. As a lack of city, it is possible to supply hot water (hot water and heating water) at a temperature required by consumers by replenishing a heat source, and also to provide hot water at a uniform temperature to each household in the apartment complex.

Claims (5)

In a plate heat exchange system of a domestic boiler using a primary heat source supplied from a district heating system or a cogeneration system, and laminated with a plurality of heat exchange plates, Respective ports for entering and exiting the primary heat source into the heat exchange plate; Respective ports for injecting and discharging the time water supplied from the water pipe to the heat exchange plate; Respective ports for inlet and outlet of heating water in the boiler to the heat exchange plate; Four-fluid plate type of household boilers using cogeneration (primary heat source, Heating Source, Medium), characterized in that it comprises a respective port for the second heat source supplied from the boiler to enter and exit the heat exchange plate System of heat exchanger. The method of claim 1, The time and heating water is a system of a four-fluid plate heat exchanger of a domestic boiler using cogeneration, characterized in that the heat exchange with each of the primary heat source. The method of claim 2, The time water is a system of a four-fluid plate heat exchanger of a domestic boiler using cogeneration, characterized in that the heat exchange with the boiler water. The method according to any one of claims 1 to 3, The heat exchange plate is composed of six ports each, the port is a system of four-fluid plate heat exchanger of the home boiler using cogeneration, characterized in that the flow path is selectively formed according to the conditions under which the heat exchange. The method of claim 4, wherein The port is a system of four-fluid plate heat exchanger of the home boiler using cogeneration, characterized in that the diameter is formed differently.

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