KR101866024B1 - Heating and hot water device of the central type - Google Patents

Abstract

A centralized heating and hot water supply system is disclosed.
The centralized heating and hot water supply apparatus according to the present invention includes: a main heat exchanger for receiving heating medium from a heat production facility to produce heating water; A main supply pipe connected to the main heat exchanger and supplying heating water; A main return pipe connected to the main heat exchanger and recovering the heated water; At least one heating water supply pipe connected to the main supply pipe for supplying heating water to at least one heating zone for heating; At least one heating water recovery pipe connected to the main recovery pipe and delivering the heating water delivered from the heating zone to the main recovery pipe; A heating water supply pipe connected to the main supply pipe and a hot water return pipe connected to the main return pipe, the heating water transferred from the hot water supply pipe for hot water and the water transferred through the water supply pipe are subjected to heat exchange A hot water heat exchanger for producing hot water for supplying to the power distributor of each household or the floor; One or more hot water pipes connected to the hot water heat exchanger and supplying hot water to the power distributor; One or more water supply pipes connected to the hot water heat exchanger and delivering the water delivered from the water supply pipe to the hot water heat exchanger; At least one heating water flow rate regulating valve installed in the at least one heating water supply pipe for heating or at least one heating water return pipe for heating to regulate the flow rate of the heating water; A third valve installed in the hot water supply water supply pipe for regulating a flow rate of the heating water supplied from the main supply pipe to the hot water heat exchanger; One or more hot water flow regulating valves provided in the at least one hot water supply line for regulating the flow rate of the hot water supplied to the hot water distributor; And a central controller for controlling the heating water flow rate control valve, the third valve, and the hot water flow rate control valve.

Description

{HEATING AND HOT WATER DEVICE OF THE CENTRAL TYPE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centralized heating and hot water supply apparatus, and more particularly, to a centralized heating and hot water supply apparatus capable of efficient and stable heating operation and hot water supply in a plurality of spaces constituting a commercial building or a multi-

In apartment buildings or medium to large-sized buildings or high-rise buildings, heating facilities such as boilers are installed to supply heating and hot water (hot water) to each floor or household. Such a heating system is divided into a separate type or a centralized type depending on the production method of the heating medium (for example, hot water, hot water or steam).

In the case of the individual type, the heat source is produced for each household or floor of the apartment house, and the heating operation is carried out separately. The fuel used varies from oil, electricity or city gas.

The centralized method is a method of transferring heat generated from a separate heat source facility to a house or building to supply heating and hot water. Accordingly, the centralized system exchanges the heat transferred from the heat source facility in the machine room installed in the complex of the apartment house to conserve the heat loss during the heat transfer from the separate heat source facility to the apartment house, Produces and supplies low and medium hot water needed for hot water supply.

This centralized system has the advantage of being able to respond positively even if the facility efficiency is lowered compared with the individual type because it is managed by the manager having economical and specialized technology by using the heat source facility which is relatively efficient to a large number of customers. In addition, the simultaneous utilization rate can be applied to reduce the total facility capacity, and there is an advantage that the firepower can be collected in one place and the emergency situation such as fire can be easily responded to.

The present invention relates to a centralized system, and a conventionally used centralized four-pipe system including a circulation pump is used.

Conventionally, centralized heating and heat exchangers are provided respectively for heating and hot water, and piping is connected to supply and recover the heating water to the building or building through the circulation pump, the heating heat exchanger and the hot water heat exchanger. At this time, the heating heat exchanger is connected to the heating supply pipe and the heating return pipe connected to each household, and the hot water heat exchanger is connected to the hot water supply pipe and the hot water supply return pipe connected to each household.

That is, in the conventional centralized type, since the four-pipe is installed to separately supply the heating and the hot water supply, the equipment cost, the construction cost for the piping installation, the facility management and maintenance cost are increased, There is a problem that heat loss occurs in the piping.

In addition, since the hot water piping is installed separately from the heating pipe, the piping structure is inevitably complicated to install, and when it is required to be replaced due to aging, it is difficult to replace the pipe due to its complicated structure.

In addition, there was a problem of wasting energy by not reusing the heat recovered from the heating return pipe after the heating, and when the hot water was discharged from each generation or the floor, the temperature of the first discharged water was low, So that there is a problem that water is wasted.

Korean Patent No. 10-1479557 (December 30, 2014)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a central heating and hot water supply system capable of efficient and stable heating operation and hot water supply in a plurality of spaces, And an object of the present invention is to provide a device.

Another object of the present invention is to provide a centralized heating and hot water supply device capable of saving energy by recycling the heat of the heated water recovered after heating and by preventing the water from being wasted by maintaining the temperature of the hot water more than a predetermined temperature .

In order to accomplish the above object, the present invention provides a centralized heating and hot water supply apparatus. In the centralized heating and hot water supply apparatus according to an embodiment of the present invention,

A main heat exchanger for producing heating water by receiving a heating medium from a heat production facility; A main supply pipe connected to the main heat exchanger and supplying heating water; A main return pipe connected to the main heat exchanger and recovering the heated water; At least one heating water supply pipe connected to the main supply pipe for supplying heating water to at least one heating zone for heating; At least one heating water recovery pipe connected to the main recovery pipe and delivering the heating water delivered from the heating zone to the main recovery pipe; A heating water supply pipe connected to the main supply pipe and a hot water return pipe connected to the main return pipe, the heating water transferred from the hot water supply pipe for hot water and the water transferred through the water supply pipe are subjected to heat exchange A hot water heat exchanger for producing hot water for supplying to the power distributor of each household or the floor; One or more hot water pipes connected to the hot water heat exchanger and supplying hot water to the power distributor; One or more water supply pipes connected to the hot water heat exchanger and delivering the water delivered from the water supply pipe to the hot water heat exchanger; At least one heating water flow rate regulating valve installed in the at least one heating water supply pipe for heating or at least one heating water return pipe for heating to regulate the flow rate of the heating water; A third valve installed in the hot water supply water supply pipe for regulating a flow rate of the heating water supplied from the main supply pipe to the hot water heat exchanger; One or more hot water flow regulating valves provided in the at least one hot water supply line for regulating the flow rate of the hot water supplied to the hot water distributor; And a central controller for controlling the heating water flow rate control valve, the third valve, and the hot water flow rate control valve.

A fourth valve provided in a first hot water supply water supply pipe located between the main return pipe and the hot water heat exchanger; And a fifth valve installed in the main return pipe located between the first hot water heating water supply pipe and the hot water heating water recovery pipe, and the third valve is disposed between the main supply pipe and the main return pipe Wherein the first hot water heating water supply pipe is connected to the main return pipe and supplies the hot water recovered through the main return pipe to the hot water heat exchanger, The fourth valve and the fifth valve are controlled and the third valve and the fifth valve are shut off while the heating water of the main recovery pipe is supplied to the hot water heat exchanger, and the fourth valve is controlled to be opened.

A hot water circulation pipe connected to the hot water distributor and transferring hot water supplied from the hot water distributor to the at least one hot water supply pipe; And an eighth valve for controlling the flow rate of the water delivered from the water supply pipe to the at least one water supply pipe. When the hot water flows through the hot water circulation pipe, the central controller controls the eighth valve Can be controlled to be blocked.

Also, the central controller may block the at least one heating water flow control valve so that the heating water is supplied from the main return pipe to the heating water supply pipe for hot water supply, and controls the third valve and the at least one hot water flow control valve to be opened .

According to the present invention, it is possible to provide a centralized heating and hot water supply system which can efficiently and stably supply heating operation and hot water supply to a plurality of spaces constituting a commercial building or a multi-unit house with a simple structure compared with the conventional structure.

Further, the present invention can reduce the energy by recycling the heat of the heated water recovered after the heating, and it is possible to prevent the waste of water by keeping the temperature of the hot water higher than a certain temperature.

1 is a schematic diagram illustrating a centralized heating and hot water supply apparatus according to an embodiment of the present invention.
2 is a schematic diagram illustrating a system when heating is performed in a centralized heating and hot water supply apparatus according to an embodiment of the present invention.
FIG. 3 is a schematic diagram illustrating a system for hot water supply in a centralized heating and hot water supply apparatus according to an embodiment of the present invention.
FIG. 4 is a schematic diagram showing a system for preheating for heating and hot water in a centralized heating and hot water supply apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described more specifically with reference to the accompanying drawings.

1 is a schematic diagram illustrating a centralized heating and hot water supply apparatus according to an embodiment of the present invention.

1, a centralized heating and hot water apparatus 100 according to an embodiment of the present invention includes a main heat exchanger 110, a hot water heat exchanger 120, a plurality of piping facilities, and a central controller 140 .

The main heat exchanger 110 receives heating medium from a heat production facility A such as a cogeneration power plant or a central boiler, and produces heat water by heat exchange. To this end, a main supply pipe 111 for supplying heating water and a main return pipe 112 for recovering heating water are connected to the main heat exchanger 110.

The centralized heating and hot water supply apparatus 100 according to the present embodiment is distributed to a plurality of apartment houses in one heat production facility A. The main heat exchanger 110 in this embodiment is divided into a plurality of apartment houses It is only installed in each. That is, the main heat exchanger 110 is installed in one apartment complex, the main supply pipe 111 connected to the main heat exchanger 110 and the main return pipe are distributed to each building of the apartment complex, Layer. ≪ / RTI >

1 schematically shows a structure of a building having a plurality of zones for heating and hot water supply in a main heat exchanger 110 installed in a multi-family housing complex, in which a main supply pipe 111 and a main return pipe 112 are connected Fig.

The main supply pipe 111 is connected to the first and second heating water supply pipes 113a and 113b for heating and the heating water supply pipes 113a and 113b for heating are connected to the heating water supply pipes 113a and 113b, And heating can be performed. At this time, the first heating supply pipe supplies the heating to the first heating zone H1, and the second heating heating water supply pipe 113b supplies the heating to the second heating zone H2. Here, the first and second heating zones H1 and H2 mean two generations located in one floor of a building such as a multi-family house, and the number of the heating zones may be varied if necessary. As the number of heating zones varies, the number of heating water supply pipes for heating and the number of heating water recovery pipes for heating may be varied accordingly. The present invention can be applied not only to one layer but also to a plurality of layers.

Although the heating and hot water supply is exemplarily provided in the first heating zone H1, the second heating zone H2 is also heated and heated in the same manner as the first heating zone H1. Can be supplied.

That is, the main supply pipe 111 supplies the heated water heated by the main heat exchanger 110 to the first heating zone H1 through the first heating water supply pipe 113a. Accordingly, the heated water serves as the heating water. The first heating zone H1 is connected to the first heating water recovery pipe 114a and the first heating water recovery pipe 114a is connected to the main recovery pipe 112. [ At this time, the first and second heating water recovery tubes 114a and 114b are provided with first and second valves 131 and 132, respectively, so that the flow rate of the heating water can be adjusted. That is, the first and second valves 131 and 132 are heating water flow rate control valves serving as the flow rate of the heating water. The first and second valves 131 and 132 may be installed in the first and second heating water supply pipes 113a and 113b instead of the first and second heating water recovery tubes 114a and 114b .

In the present embodiment, unlike the prior art, one hot water heat exchanger is disposed in a plurality of generations to supply hot water. Therefore, compared to the conventional case, the facility can be simplified and the piping can be simplified.

The main return pipe 112 may be provided with a circulation pump 117 for circulating the heating water. The circulation pump 117 is provided for circulating the heating water recovered through the first and second heating zones H1 and H2 and the hot water heat exchanger 120 and can be controlled by the central controller 140. [

The hot water heat exchanger 120 is a heat exchange facility for supplying hot water, and a hot water supply water supply pipe 115 and a hot water supply water recovery pipe 116 are connected to one side. And the water supply water supply pipe 121 and the water supply pipe 122 may be connected to the other side, respectively. At this time, the hot water supply water supply pipe 115 is connected to the main supply pipe 111 and the main return pipe 112, and the hot water supply water return pipe 116 is connected to the main return pipe 112. The heated water supplied to the hot water supply water supply pipe 115 can be supplied from the main supply pipe 111 or supplied from the main return pipe 112. [ To this end, the hot water supply hot water supply pipe 115 is provided with third and fourth valves 133 and 134 so as to control the supply path, supply amount and flow rate of the hot water supplied to the hot water heat exchanger 120. The fifth valve 135 may be installed in the main return pipe 112 to supply the heating water to the hot water supply pipe 115 from the main return pipe 112. Also, the third valve 133 may be a simple check valve in addition to the valve having the flow control function.

The hot water heat exchanger 120 generates hot water through heat exchange with the water supplied through the water supply pipe 128 connected to the water supply unit 127 and supplies the generated hot water to the first and second heating zones H1 and H2, To the faucet distributor (129) of Fig.

A water supply pipe 122 is connected to the hot water heat exchanger 120 and a water supply pipe 128 is connected to the water supply pipe 122 so that the water supplied through the water supply pipe 128 flows through the water supply pipe 122 To the hot water heat exchanger (120). The hot water generated by heat exchange in the hot water heat exchanger 120 is supplied to the first and second hot water supply pipes 123a and 123b through the hot water supply pipe 121. [ The supplied hot water can be supplied to the power receiving and distributing device 129 via the first and second hot water supplying pipes 123a and 123b.

The hot water is consumed through the faucet distributor 129 depending on the use of the hot water, but when the use of the hot water is stopped, the hot water remaining in the pipe can be circulated through the hot water circulation pipe 125 connected to the faucet distributor. The hot water circulation pipe (125) is connected to the water supply pipe (122).

And sixth and seventh valves 136 and 137 respectively may be installed in the first and second hot water supply pipes 123a and 123b, respectively. The sixth and seventh valves 136 and 137 are controlled by the central controller 140 to control whether the hot water is supplied to the respective generations or not and the flow rate thereof is controlled by the sixth and seventh valves 136 and 137, . That is, the sixth and seventh valves 136 and 137 are hot water flow regulating valves for regulating the flow rate of hot water. The water supply pipe 128 or the water supply pipe 122 may be provided with an eighth valve 138 for controlling whether the water supplied to the water heat exchanger 120 is supplied or not and the eighth valve 138 May also be controlled via the central controller 140. Also, a check valve CV for preventing backflow may be installed in the hot water circulation pipe 125.

FIG. 2 is a schematic diagram showing a system for heating only in a centralized heating and hot water supply apparatus according to an embodiment of the present invention.

The heating only in each household will be described using the drawings shown in Fig.

Heat water that has been heat-exchanged in the main heat exchanger 110 is supplied to the generation layers and is distributed to the first heating water supply pipe 113a and the second heating water supply pipe 113b in the corresponding layers, Respectively, into the zones H1 and H2. The heating water recovered in the first and second heating zones H1 and H2 is integrated into the main recovery pipe 112 through the first and second heating water recovery tubes 114a and 114b to be supplied to the main heat exchanger 110). At this time, the circulating pump 117 can continuously flow the heating water.

While the heating is being performed, the first and second valves 131 and 132 and the fifth valve 135 are kept open, and the flow rate of the heating water can be controlled by the central controller 140 as needed . In addition to the first, second and fifth valves 131, 132 and 135, the remaining valves 133, 134, 136, 137 and 138 are kept closed. The heating water produced in the main heat exchanger 110 and supplied to the first and second heating zones H1 and H2 through the control of the valves 131 to 138 is supplied to the main supply pipe 111, The heating water supply pipes 113a and 113b for heating, the heating water recovery pipes 114a and 114b for the first and second heating, and the main return pipe 112. [ If the second heating zone H2 does not heat and only the first heating zone H1 is heated, the second valve 132 may be closed.

FIG. 3 is a schematic diagram illustrating a system for hot water supply in a centralized heating and hot water supply apparatus according to an embodiment of the present invention.

With reference to Fig. 3, a description will be given of the hot water supply in this embodiment.

The heated water heat-exchanged in the main heat exchanger 110 is supplied to the generation layer and supplied to the hot water heat exchanger 120 through the hot water supply water supply pipe 115 for the hot water. The heated water is recovered to the main recovery pipe 112 through the hot water heat recovery pipe 116 in the hot water heat exchanger 120. The water supplied to the hot water heat exchanger 120 is converted into hot water by heat exchange with the heated water and the hot water is distributed to the first and second hot water supply pipes 123a and 123b through the hot water supply pipe 121 And is supplied to the faucet distributor 129 installed in the first and second heating zones H1 and H2.

As described above, the process of supplying hot water to the water dispenser 129, that is, the production and supply of hot water, can be performed by sensing the moment when hot water is consumed in the water dispenser 129. Whether hot water is consumed in the faucet distributor 129 can be confirmed through the central controller 140. To this end, a flow rate sensor may be installed in the first hot water supply pipe 123a. The flow sensor sends a signal for the "+" value to the central controller 140 when hot water is consumed through the faucet distributor 129 and the central controller 140 controls each valve to produce hot water. In addition to the system using the flow sensor, the system may be implemented by various methods such as a mechanical or electrical sensing of the operation of the water supply.

The central controller 140 closes the first and second valves 131 and 132 to supply the heating water supplied to the first and second heating zones H1 and H2 And the fifth valve 135 is shut off. And the third and fourth valves 133 and 134 provided in the hot water supply water supply pipe 115 are opened. The heating water supplied to the main supply pipe 111 can be moved only to the heating water supply pipe 115 for hot water supply.

Further, the sixth to eighth valves 136, 137, and 138 are opened. The hot water produced by the hot water heat exchanger 120 is discharged through the first and second hot water supply pipes 123a and 123b to the first and second heating zones H1, and H2 to the power distributor 129 side. As the eighth valve 138 is opened, the water supplied from the water supply equipment 127 is heat-exchanged in the hot water heat exchanger 120 via the water supply pipe 128 and the water supply pipe 122, have. If the hot water supply demand occurs only in the first heating zone H1, the seventh valve 137 is closed to flow the hot water only toward the power distributor 129 of the first heating zone H1.

FIG. 4 is a schematic diagram showing a system for preheating for heating and hot water in a centralized heating and hot water supply apparatus according to an embodiment of the present invention.

In this embodiment, preheating of the hot water can be performed when heating is supplied and no hot water is supplied.

Conventionally, there has been a problem that low-temperature hot water is supplied at the initial stage of using hot water, and unnecessary water is discarded. In this embodiment, the hot water is preheated by using the heat of the heated water after completion of heating so that the hot water over a certain temperature can be supplied from the beginning. That is, the hot water temperature is maintained at a predetermined level or higher so that the hot water temperature at the time of starting to be consumed in the power distributor 129 can be maintained at a predetermined level or more. Thus, the hot water flows through the hot water distributor 129, the hot water circulation pipe 125, Can be circulated. The water can be supplied to the faucet distributor 129 through the first and second hot water supply pipes 123a and 123b through the hot water supply pipe 121 in a state where heat exchange is performed at a certain level or more in the hot water heat exchanger 120 have.

The hot water flowing through the first and second heating zones H1 and H2 is moved through the main return pipe 112 while the hot water is circulated through the hot water circulation pipe 125. At this time, The hot water of the pipe 112 can be used as a heat source for preheating the hot water circulating through the hot water circulation pipe 125. [ To do this, the fifth valve 135 of the main return pipe 112 is shut off and the fourth valve 134 of the hot water supply water supply pipe 115 is opened as shown in FIG. Accordingly, the hot water flowing through the main return pipe 112 can be transferred to the hot water heat exchanger 120.

By using the heat remaining in the heating water used for the heating for the preheating of the hot water, the heat of the heating water can be recycled and the energy can be saved.

Here, the valves to be closed are the third valve 133, the fifth valve 135 and the eighth valve 138. The eighth valve (138) is closed because it is not necessary to supply the water to the hot water as the hot water is circulated.

Although not shown, a circulation pump for circulating hot water is installed in the circulation line of the hot water.

As described above, the hot water is kept at a predetermined temperature or more by providing a temperature sensor in the circulation line of the hot water and circulating the measured temperature value when the measured temperature value is lower than the set temperature value or circulating the hot water water for a predetermined period of time And the like.

As described above, according to the present invention, efficient and stable heating operation and hot water supply can be achieved with a simple structure compared with the conventional structure. In addition, energy can be saved by recycling the heat of the heating water recovered after the heating is completed, and waste of resources can be prevented by keeping the temperature of the hot water more than a certain temperature.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It should be understood that the scope of the present invention is to be understood as the scope of the following claims and their equivalents.

100: Heating and water supply system
110: main heat exchanger
111: main supply pipe 112: main return pipe
113: Heating water supply pipe for heating
113a: First heating water supply pipe for heating 113b: Second heating water supply pipe
114: Heating water recovery pipe for heating
114a: First heating water recovery pipe 114b: Second heating water recovery pipe
115: Heating water supply pipe for hot water supply 116: Heating water return pipe for hot water supply
117: circulation pump 120: hot water heat exchanger
121: Hot water supply piping 122: City water supply piping
123a: first hot water tank 123b: second hot water tank
125: Hot water circulation pipe 127: Water supply facility
128: water pipe 129: faucet distributor
131 to 138: First to eighth valves
140: Central controller A: Heat production facility
H1: First heating zone H2: Second heating zone
CV: Check Valve

Claims (6)

A main heat exchanger for producing heating water by receiving a heating medium from a heat production facility;
A main supply pipe connected to the main heat exchanger and supplying heating water;
A main return pipe connected to the main heat exchanger and recovering the heated water;
At least one heating water supply pipe connected to the main supply pipe for supplying heating water to at least one heating zone for heating;
At least one heating water recovery pipe connected to the main recovery pipe and delivering the heating water delivered from the heating zone to the main recovery pipe;
A heating water supply pipe for hot water supply connected to the main supply pipe and the main return pipe and a heating water recovery pipe for hot water supply connected to the main return pipe, A hot water heat exchanger for producing hot water for supplying heat to the water dispenser of each household or floor;
One or more hot water pipes connected to the hot water heat exchanger and supplying hot water to the power distributor;
A water supply pipe connected to the hot water heat exchanger and transmitting the water supplied from the water pipe to the hot water heat exchanger;
At least one heating water flow rate regulating valve installed in the at least one heating water supply pipe for heating or at least one heating water return pipe for heating to regulate the flow rate of the heating water;
A third valve installed in the hot water supply pipe for hot water located between the main supply pipe and the main return pipe and controlling the flow rate of the heating water supplied from the main supply pipe to the hot water heat exchanger;
A fourth valve installed in a hot water supply pipe for hot water located between the main return pipe and the hot water heat exchanger;
A fifth valve installed in the main return pipe located between the hot water supply water supply pipe and the hot water supply water recovery pipe;
One or more hot water flow regulating valves provided in the at least one hot water supply line for regulating the flow rate of the hot water supplied to the hot water distributor;
An eighth valve for regulating the flow rate of the water delivered from the water supply pipe to the water supply pipe;
A hot water circulation pipe connected to the hot water distributor and delivering hot water supplied from the hot water distributor to the hot water distributing pipe;
A circulation pump disposed in the hot water circulation pipe for circulating the hot water supplied from the power distributor; And
And a central controller for controlling the heating water flow rate control valve, the third valve, the fourth valve, the fifth valve, the hot water flow control valve, the eighth valve and the circulation pump,
The central controller controls the heating water flow rate control valve, the fourth valve, and the hot water flow rate control valve to be opened, controls the third valve, the fifth valve and the eighth valve to be closed, And preheats the hot water flowing in the hot water circulation pipe at the same time as performing the heating. delete delete delete delete delete

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