KR20210005991A - Expanded water reduction apparatus including multi-pump - Google Patents

Abstract

The present invention relates to an expansion water reduction device for absorbing a pressure change of heated water while the water heated by a heating device circulates inside an object by using a main pump. According to one embodiment, the expansion water reduction device comprises: an expansion tank; an expansion water inlet pipe; a reduction water outlet pipe; and a multi-pump disposed between the expansion tank and the main pump in the expansion water outlet pipe. The multi-pump can provide reduced expansion water to the heating device, provide makeup water to the inside of the expansion tank, clean a heat exchanging system, and clean the heating device in a connected state without separation of the heating device.

Description

Expanded water reduction device including a multi-pump {EXPANDED WATER REDUCTION APPARATUS INCLUDING MULTI-PUMP}

The present invention relates to an expanded water reduction apparatus provided in a heat exchange system, and more particularly, to an expanded water reduction apparatus including an expansion tank for absorbing a pressure change of heated water.

In the heat exchange system, when the temperature of water in the heating pipe rises, the volume of water expands and the pipe pressure rises. If such an increase in piping pressure is left unattended, damage to the heating pipe and various equipment may occur. Therefore, in order to solve this problem, an expansion tank is usually installed in the heating pipe. In order to introduce water into the expansion tank, a pump is additionally installed in addition to the heating pump for circulating the heating pipe.

When the water level in the expansion tank falls below the set range, make-up water is provided using an additional pump. Water quality management for the water circulating inside the heat exchange system is essential. For water quality management, the inside of the heat exchange system is cleaned using a cleaning solution, and a chemical pump is installed. In addition, the heat exchange system requires a plurality of functions, and a plurality of devices for performing these functions must be added. As described above, as a plurality of devices are added, the size of the heat exchange system becomes too large and the system becomes complicated.

The present invention is to solve the above-described technical problem, and an object of the present invention is to provide an expanded water reduction apparatus including a multi-pump having a plurality of functions.

The present invention provides an expanded water reduction device for absorbing a pressure change of heated water while circulating the inside of an object by using a main pump for water heated by a heating device. Expanded water reduction apparatus according to an embodiment of the present invention, the interior of the expansion tank at atmospheric pressure; An expansion water inlet pipe connecting the expansion tank and the object; A reduced water discharge pipe connecting between the expansion tank and the main pump; A multi-pump disposed between the expansion tank and the main pump among the reduced water discharge pipe; A make-up water storage unit connected to one side of the expansion tank to provide make-up water into the expansion tank using the multi-pump; A branch pipe connecting between the expansion tank and one side of the reduced water discharge pipe; A washing liquid storage unit connected to the branch pipe and providing a washing liquid for washing the inside of the heat exchange system using the multi-pump; An additional pipe connecting the expansion water inlet pipe and the expansion tank; And an additional valve for opening and closing the additional pipe, wherein the heating device and the object are connected to each other by a hot water supply line, the main pump and the heating device are connected to each other by a hot water return line, and the branch pipe and The hot water return line is connected to each other by a first washing pipe, the reduced water discharge pipe and the hot water supply line are connected to each other by a second washing pipe, and the multi-pump is between the first washing pipe and the second washing pipe. And when the first and second cleaning pipes and the heating device communicate with each other in a closed circuit structure, the inside of the heating device is cleaned using the multi-pump.

It is disposed in the reduced water discharge pipe, may further include a filter for filtering foreign substances of water flowing through the reduced water discharge pipe.

The expansion tank may have a rectangular parallelepiped structure.

A plurality of shelves may be installed on one surface of the expansion tank.

According to an embodiment of the present invention, expansion water or make-up water may be introduced into the expansion tank using a multi-pump, and the interior of the heat exchange system may be cleaned, and the interior of the heating device may be cleaned while being connected without being separated. Accordingly, it is possible to perform the above-mentioned various functions without an additional pump, and thus, it is advantageous in terms of cost, reduces the installation area of the heat exchange system, and simplifies the structure of the heat exchange system.

A sensor capable of measuring the amount of dissolved oxygen, and by opening and closing the oxygen discharge path with the amount of oxygen measured by the sensor, removes dissolved oxygen in the expanded water, thereby preventing problems such as corrosion of a pipe.

By providing a filter, it is possible to improve the quality of water circulating inside the heat exchange system by removing foreign substances in the reduced water.

Since the expansion tank has a rectangular parallelepiped structure, it is easy to manufacture and install, and shelves for hanging tools or work items can be installed on the outer wall. By installing shelves on the outer wall of the expansion tank, it is possible to increase the thickness of the outer wall of the expansion tank, thereby increasing the strength of the outer wall of the expansion tank. In addition, since the inside of the expansion tank is at atmospheric pressure, a viewing window can be installed to directly check the water level in the expansion tank, so that a level gauge can be omitted and water in the expansion tank can be prevented from overflowing.

1 is a schematic view for explaining an expanded water reduction apparatus according to an embodiment of the present invention.
2 is a schematic view for explaining an expanded water reduction apparatus according to another embodiment of the present invention.
3 is a schematic view for explaining an example of a heat exchange system to which the expansion water reduction device of FIG. 1 or 2 is applied.
4A and 4B are cross-sectional views illustrating heat transfer plates of the heating device of the heat exchange system of FIG. 2.
FIG. 5 is a diagram illustrating a process of reducing expanded water using the expanded water reducing device shown in FIG. 2.
6 is a view for explaining a process of providing makeup water using the expanded water reduction device shown in FIG. 2.
7 is a diagram illustrating a process of cleaning the heat exchange system using the expanded water reduction device shown in FIG. 2.
FIG. 8 is a diagram illustrating a process of washing the heating device using the expanded water reduction device shown in FIG. 2.
9 is a diagram illustrating a backflushing process of the heating device using the expanded water reduction device shown in FIG. 2.

Hereinafter, embodiments of the present invention will be described clearly and in detail to the extent that a person having ordinary knowledge in the technical field of the present invention can easily implement the present invention.

1 is a schematic view for explaining an expanded water reduction apparatus according to an embodiment of the present invention. 2 is a schematic view for explaining an expanded water reduction apparatus according to another embodiment of the present invention.

1 and 2, the expansion water reduction device 300, the expansion tank 310, the expansion water inlet pipe (IWL) connected to one side of the expansion tank 310, the other side of the expansion tank 310 It may include a reduced water discharge pipe (OWL) connected to the multi-pump 320 disposed in the reduced water discharge pipe (OWL), and a plurality of valves (V1, V2, V3, V4, V5, V6, V7, V8, V9). have.

The expansion tank 310 may be a sealed expansion tank 310. According to an embodiment, the expansion tank 310 may have a rectangular parallelepiped structure. Since the inside of the expansion tank 310 of the present embodiment is not maintained in a vacuum state, but is in an atmospheric pressure state, the upper and lower sides may have a rectangular shape rather than a semicircular pill shape. Accordingly, it may be easy to manufacture and install the expansion tank 310.

An automatic control panel 306 may be disposed on the first sidewall of the expansion tank 310. Various factors of the heat exchange system 1000 and the expansion tank 310 can be set and checked through the automatic control panel 306. For example, the pressure of the heat exchange system 1000 is set, the operating pressure of the expansion tank 310 is displayed, and the expansion tank 310 and valves V1, V2, V3, V4, V5, and V6, V7, V8, V9) and can include fault indication and alarm functions.

On the second sidewall of the expansion tank 310, a plurality of shelves 302 (angles) on which tools or workpieces can be hung may be disposed. In addition, the thickness of the expansion tank 310 is as thin as about 2 mm, and by installing the shelf 302 on the outer wall of the expansion tank 310, the thickness of the outer wall of the expansion tank 310 is increased, thereby increasing the strength of the outer wall of the expansion tank 310. You can raise it.

A viewing window 304 through which the inside of the expansion tank 310 can be confirmed may be installed on the third sidewall of the expansion tank 310. As described above, since the inside of the expansion tank 310 is at atmospheric pressure, the inside of the expansion tank 310 can be confirmed by installing a viewing window 304 that cannot be installed in the expansion tank 310 in a vacuum or high pressure state. When the viewing window 304 is used, the water level in the expansion tank 310 can be directly checked, so that a level gauge can be omitted, and water in the expansion tank 310 can be prevented from overflowing.

3 is a schematic view for explaining a heat exchange system to which the expanded water reduction device of FIG. 1 is applied.

Referring to FIG. 3, the heat exchange system 1000 may include a heating device 100, a main pump 200, and an expanded water reduction device 300. The heating device 100 may have a plate-shaped structure. The plate-shaped heating device 100 may include a plurality of heat transfer plates HP.

4A and 4B are cross-sectional views for explaining the heat transfer plates HP of the heating apparatus 100 of the heat exchange system 1000 of FIG. 1. 4A and 4B, each of the heat transfer plates HP may have a thin and corrugated structure. Two types of fluids with different characteristics such as temperature pass through the heat transfer plates (HP), and the corrugations (WV) formed on each of the heat transfer plates (HP) make the flow of the fluid turbulent, and the pressure difference between the two fluids It can play a role of support. For example, one of the two fluids may be provided at 115°C and discharged at 55°C, and the other may be provided at 45°C and discharged at 60°C.

Each heat transfer plate HP may include a plurality of holes HL. For example, when the heat transfer plate HP has a rectangular flat plate structure, four holes HL may be formed at each corner. The plurality of holes HL may function as a flow path through which two types of fluids pass.

Each of the heat transfer plates HP has the same structure, and the heat transfer plates HP may include a first heat transfer plate HP1, a second heat transfer plate HP2, a third heat transfer plate, a fourth heat transfer plate, and an n-1th heat transfer plate. have. The first heat transfer plate (HP1) is placed so that the first side faces up, the second heat transfer plate (HP2) is placed so that the second side facing the first side faces up, and the third heat transfer plate is placed so that the first side faces up. Thus, the n-th heat transfer plate can be arranged while changing its vertical position. As described above, the fluid passing through the first heat transfer plate HP1 among the two fluids may flow only on the surfaces of odd-numbered heat transfer plates such as the first heat transfer plate HP1 and the third heat transfer plate (see FIG. 2A ). In addition, as shown in FIG. 2B, other fluids may flow only on the surfaces of even-numbered heat transfer plates such as the second insulating plate and the fourth insulating plate (see FIG. 2B ).

Each heat transfer plate (HP) may include at least one selected from the group consisting of Ti, Ti-Pd, Ni, Hastelloy®, and Avesta®.

Referring back to FIG. 3, the fluid heated by the heating device 100 may be provided to a target object OB, such as an apartment, a building, or a factory, through a hot water supply line WSL. According to an embodiment, a fluid provided through the hot water supply line WSL, for example, water may be provided at about 60°C.

In the heat exchange system 1000, when the temperature of a fluid, such as water, rises, the volume of water expands (hereinafter, referred to as expansion water), and the piping pressure increases.If the piping pressure is left unattended, the piping may be damaged and various devices Can cause damage. In order to solve this problem, the expansion water reduction device 300 may be installed in the heat exchange system 1000.

The expanded water circulating through the object OB is provided to the expanded water reduction device 300 through the expansion water inlet pipe IWL, and the expanded water reduced to its original state in the expanded water reduction device 300 is the reduced water discharge pipe (OWL). ) Through the hot water return line (WRL) connected to the main pump 200 may be circulated back to the heating device 100. According to an embodiment, a fluid flowing into the heating device 100 through the hot water return line WRL, for example, water may have a temperature of about 45°C.

On the other hand, a plurality of main pumps 200 are arranged in parallel, so that it is possible to prepare for failure or a break.

One end of the expansion water inlet pipe IWL may be connected to an object OB such as a building, and the other end may be disposed above the expansion tank 310. Water heated by the heating device 100 of the heat exchange system 1000 transfers and uses heat through an object (OB) such as a building, and then flows into the expansion tank 310 through the expansion water inlet pipe (IWL). Can be. At this time, the multi-pump 320 may be operated to provide the expanded water into the expansion tank 310 through the expansion water inlet pipe IWL.

The first valve V1 is installed in the expansion water inlet pipe IWL, and the opening and closing of the expansion water inlet pipe IWL can be controlled. As an example, the first valve V1 may include a solenoid valve. The first valve V1 may be connected to the automatic control panel 306 and controlled by the automatic control panel 306.

In addition, a first pressure gauge P1 may be further installed in the expansion water inlet pipe IWL. The first pressure gauge P1 is disposed between one end of the expansion water inlet pipe IWL and the first valve V1 to measure the internal pressure of the expansion water inlet pipe IWL. The first pressure gauge P1 may be connected to the automatic control panel 306. The pressure measured by the first pressure gauge P1 is provided to the automatic control panel 306, and the automatic control panel 306 can automatically open and close the first valve V1 according to the pressure of the first pressure gauge P1. .

1, the first valve (V1) is automatically controlled by the automatic control panel 306, at least one of the first valve (V1), the first pressure gauge (P1), and the automatic control panel 306 In case of malfunction or failure, an additional pipe ADL1 connected to the expansion water inlet pipe IWL, and an additional valve ADV1 disposed among the additional pipe ADL1 may be further included. The additional pipe may be disposed between the first valve V1 and the other end of the expansion water inlet pipe IWL. In addition, the additional valve ADV1 may be a manual valve. Therefore, it is possible to manually adjust the opening and closing of the expansion water inlet pipe (IWL).

According to an embodiment, a taper pipe (not shown) is additionally installed between the first pressure gauge P1 and the first valve V1, and the expansion tank 310 through the expansion water inlet pipe IWL It is possible to adjust the amount of expansion water to be injected. The drop tube may be omitted.

Referring again to FIGS. 1 and 2, the expansion water introduced into the expansion tank 310 through the multi-pump 320 by opening the first valve V1 is temporarily stored and stored in the expansion tank 310. The expanded water is naturally cooled and the temperature decreases, so that the expanded water can be reduced to its original state. The expanded water (hereinafter, reduced water) reduced to its original state moves to the heating device 100 through the reduced water discharge pipe OWL, and may continuously circulate the heat exchange system 1000 through the main pump 200.

One end of the reduced water discharge pipe (OWL) may be connected to the expansion tank 310, and the other end of the reduced water discharge pipe (OWL) may be connected to the heating device (100).

In the reduced water discharge pipe OWL, a second valve V2 and a third valve V3 for opening and closing the reduced water discharge pipe OWL may be installed. The second valve V2 may be disposed between the expansion tack and the multi-pump 320, and the third valve V3 may be disposed between the multi-pump 320 and the other end of the reduced water discharge pipe OWL. As an example, each of the second valve V2 and the third valve V3 may include a gate valve. The second valve V2 and the third valve V3 may be connected to the automatic control panel 306 and controlled by the automatic control panel 306.

In addition, a second pressure gauge P2 may be further installed in the reduced water discharge pipe OWL. The second pressure gauge P2 is disposed between the other end of the reduced water discharge pipe OWL and the third valve V3, so that the reduced water discharge pipe OWL ) Internal pressure can be measured. The second pressure gauge P2 may be connected to the automatic control panel 306. The pressure measured by the second pressure gauge (P2) is provided to the automatic control panel 306, and in the automatic control panel 306, the first valve (V1) and the second valve (V2) according to the pressure of the second pressure gauge (P2). , And the third valve V3 may be opened and closed automatically.

The expanded water reduction device 300 may further include a filter FT installed in the reduced water discharge pipe OWL to filter wastes in the reduced expanded water. According to an embodiment, the filter FT may be disposed between the second valve V2 and the multi-pump 320. However, the filter (FT) may be installed in any of the reduced water discharge pipe (OWL), the present invention does not limit the position of the filter (FT). By installing the filter FT, it is possible to improve the water quality of the reduced expanded water and prevent foreign matter from accumulating in pipes through which the reduced expanded water flows.

The expansion water reduction device 300 is connected to the expansion tank 310 and provides a makeup water to the expansion tank 310, a makeup water storage unit MUWR, a makeup water storage unit MUWR, and an expansion tank 310 It may further include a make-up water inlet pipe (MUWL) connecting the. One end of the make-up water inlet pipe MUWL may be connected to the make-up water storage unit MUWR, and the other end of the make-up water inlet pipe MUWL may be connected to the expansion tank 310. The make-up water is water provided into the heat exchange system 1000 when there is insufficient water in the heat exchange system 1000 or when the heat exchange system 1000 is first operated.

A fourth valve V4 is installed in the make-up water inlet pipe MUWL to control the opening and closing of the make-up water inlet pipe MUWL. As an example, the fourth valve V4 may include a solenoid valve. The fourth valve V4 may be connected to the automatic control panel 306 and controlled by the automatic control panel 306.

When the amount of water in the expansion tank 310 is smaller than the set range, the fourth valve V4 is opened to receive supplemental water from the expansion tank 310. For example, when the water in the expansion tank 310 is 6v% or less, the fourth valve V4 may be opened and supplemental water may be provided. When the water in the expansion tank 310 is 12v% or more, the fourth valve V4 may be closed and supply of supplemental water may be stopped.

In addition, a third pressure gauge P3 may be further installed in the make-up water inlet pipe MUWL. The third pressure gauge P3 is disposed between one end of the make-up water inlet pipe MUWL and the fourth valve V4 to measure the internal pressure of the make-up water inlet pipe MUWL. The third pressure gauge P3 may be omitted.

In the existing heat exchange system 1000, a separate make-up water line and pump must be provided to provide make-up water. In this embodiment, the make-up water inlet pipe MUWL is connected to the expansion tank 310, and the expansion tank ( Since supplementary water is provided using the multi-pump 320 connected to 310), a separate pump is not required. Therefore, the structure of the heat exchange system 1000 is simplified and there is an advantageous effect in terms of cost. In addition, in the existing heat exchange system 1000, a pressure reducing valve in the make-up water line connected to a separate pump is necessarily required, but in this embodiment, the valve installed in the make-up water inlet pipe (MUWL) is a solenoid valve and does not require a pressure reducing valve. .

Meanwhile, referring to FIG. 1, in case the fourth valve V4 malfunctions or fails, an additional pipe ADL2 connected to the make-up water inlet pipe MUWL and an additional valve disposed among the additional pipe ADL2 (ADV2) may be further included. The additional valve ADV2 may be a manual valve. Therefore, it is possible to manually adjust the opening and closing of the makeup water inlet pipe (MUWL).

Referring to FIGS. 1 and 2, the expanded water reduction apparatus 300 may further include a sensor SS disposed inside the expansion tank 310 to measure the amount of dissolved oxygen in the expanded water. The sensor SS may be connected to the automatic control panel 306. In the present embodiment, the sensor (SS) for measuring the amount of dissolved oxygen is described as being installed inside the expansion tank 310, but the sensor (SS) for measuring the amount of dissolved oxygen is disposed in the expansion water inlet pipe (IWL) to inflow the expanded water. It is also possible to measure the amount of dissolved oxygen in the expanded water flowing through the pipe (IWL). Therefore, the present invention does not limit the position of the sensor SS for measuring the amount of dissolved oxygen. Meanwhile, in the present embodiment, the sensor SS has been described as measuring the amount of dissolved oxygen, but it is possible to measure the overall quality of water in the expanded water.

The expanded water reduction device 300 may further include a dissolved oxygen discharge path EX_O2 communicating with the expansion tank 310. A fifth valve V5 is disposed in the dissolved oxygen discharge path EX_O2 to open and close the dissolved oxygen discharge path EX_O2. The fifth valve V5 may be connected to the automatic control panel 306. When the amount of dissolved oxygen in the expanded water measured from the sensor SS is provided to the automatic control panel 306, the automatic control panel 306 automatically opens the fifth valve V5 when the amount of dissolved oxygen is greater than the set range to dissolve oxygen. It can be discharged along the oxygen discharge path (EX_O2). By removing oxygen in the expanded water, it is possible to minimize corrosion of pipes by oxygen while circulating the heat exchange system 1000.

The expanded water reduction device 300 may further include a branch pipe (BL) connecting between one side of the expansion tank 310 and one side of the reduced water discharge pipe OWL. One end of the branch pipe BL may be connected to the expansion tank 310, and the other end of the branch pipe BL may be connected to the reduced water discharge pipe OWL. The other end of the branch pipe BL may be disposed between the filter FT and the multi-pump 320. Among the branch pipes BL, a sixth valve V6 is installed to control opening and closing of the branch pipe BL.

The expanded water reduction device 300 includes a cleaning liquid storage unit CR that provides a cleaning liquid for cleaning the interior of the heat exchange system 1000, and a cleaning liquid inlet pipe connecting the cleaning liquid storage unit CR and the branch pipe BL. CCL) may be further included. The washing liquid inlet pipe CCL may be disposed between the sixth valve V6 and the other end of the branch pipe BL. The washing liquid inlet pipe CCL is in communication with the branch pipe BL, and the opening and closing of the washing liquid inlet pipe CCL may be controlled by a seventh valve V7 installed in the washing liquid inlet pipe CCL.

In the existing heat exchange system 1000, a separate chemical feeder pump must be provided to clean the interior of the heat exchange system 1000. In this embodiment, the washing liquid inlet pipe CCL is connected to the branch pipe BL. ), a separate pump is not required because the washing liquid is provided by using the multi-pump 320 connected to ). Therefore, the structure of the heat exchange system 1000 is simplified and there is an advantageous effect in terms of cost.

An operation of cleaning the inside of the heat exchange system 1000 according to an embodiment will be described in detail later.

The expanded water reduction device 300 may further include washing pipes for cleaning the inside of the heating device 100. In the present embodiment, two washing pipes are exemplarily described, but for convenience of explanation, they are referred to as a first washing pipe CL1 and a second washing pipe CL2.

One end (A) of the first washing pipe (CL1) is connected to the hot water return line (WRL) between the heating device (100) and the main pump (200), and the other end of the first washing pipe (CL1) is a branch pipe ( BL). The other end of the first washing pipe CL1 may be disposed between the washing liquid inlet pipe CCL and the multi-pump 320.

One end (B) of the second washing pipe (CL2) is connected to the hot water supply line (WSL) between the heating device 100 and an object (OB) such as a building, and the other end of the second washing pipe (CL2) is reduced water. It can be connected to the discharge pipe (OWL). The other end of the second washing pipe CL2 may be disposed between the multi-pump 320 and the third valve V3.

An eighth valve V8 for opening and closing the first washing pipe CL1 is installed in the first washing pipe CL1, and a ninth valve V8 for opening and closing the second washing pipe CL2 among the second washing pipes CL2. V9) can be installed. Each of the eighth valve V8 and the ninth valve V9 may be connected to the automatic control panel 306. As an example, each of the eighth valve V8 and the ninth valve V9 may include a ball valve.

As shown, the multi-pump 320 is disposed between the first washing pipe CL1 and the second washing pipe CL2, and other valves V1, V2, V3, V4, V5, V6, and V7 When closed and the eighth valve V8 and the ninth valve V9 are open, the heating device 100 may have a structure such as a closed circuit by the first washing pipe CL1 and the second washing pipe CL2. . Accordingly, the interior of the heating device 100 may be washed through the washing liquid using the multi-pump 320. Accordingly, the heating device 100 can be cleaned in a connected state (cleaning in place: CIP) without separate separation. The process of washing the heating device 100 will be described in detail later.

In addition, the direction of water flowing inside the heating device 100 may be changed using the first washing pipe CL1 and the second washing pipe CL2. This is called back flushing, and a process for this will be described in detail later. By changing the direction of water in the heating device 100, foreign substances in the heating device 100 can be moved to and removed from the expansion tank 310.

As such, the multi-pump 320 not only provides expanded water to the expansion tank 310, but also provides supplemental water to the expansion tank 310, cleans the inside of the heat exchange system 1000, and the heating device 100 ) It can perform various functions such as washing the inside. Therefore, it is possible to perform the above-mentioned various functions using one multi-pump 320 without an additional pump, which is advantageous in terms of cost, reduces the installation area of the heat exchange system 1000, and reduces the heat exchange system ( 1000) The structure can be simplified.

Meanwhile, in the present embodiment, it has been described that the multi-pump 320 has a structure in which a plurality of pipes are connected outside the expansion tank 310, but the multi-pump 320 may be an underwater pump disposed inside the expansion tank 310. have.

5 is a view for explaining a process of reducing the expanded water using the expanded water reduction device shown in FIG.

Referring to FIG. 5, water heated by the heating device 100 may circulate through an object OB such as a building, and then flow into the expanded water inlet pipe IWL in an expanded state. The pressure of the expanded water inlet pipe IWL into which the expanded water is introduced may be measured by the first pressure gauge P1, and the measured pressure may be transmitted to the automatic control panel 306. The automatic control panel 306 may open and close the first valve V1 according to the pressure of the first pressure gauge P1.

When the pressure of the first pressure gauge P1 is within a set range, the first valve V1 is opened, and the expansion water may move into the expansion tank 310. The expansion water temporarily stored in the expansion tank 310 may be converted into reduced water by reducing its temperature to its original state due to natural cooling.

Meanwhile, while the expanded water is temporarily stored in the expansion tank 310, the amount of dissolved oxygen in the expanded water may be measured through a sensor SS that measures the amount of dissolved oxygen disposed in the expansion tank 310. The measured amount of oxygen is transmitted to the automatic control panel 306, and the automatic control panel 306 may open and close the fifth valve V5 according to the amount of oxygen. When the amount of dissolved oxygen exceeds the set range, the fifth valve V5 is opened, and oxygen dissolved in the expanded water is vaporized and discharged to the outside through the dissolved oxygen discharge path EX_O2.

When the second valve V2 is opened and the multi-pump 320 is operated, the reduced water may move through the reduced water discharge pipe OWL by the suction power of the multi-pump 320. At this time, the reduced water passes through the filter FT disposed between the second valve V2 and the multi-pump 320, and foreign substances in the reduced water may be removed by the filter FT.

The reduced water that has passed through the multi-pump 320 may move into the heating device 100 through the main pump 200 through the reduced water discharge pipe OWL through the opened third valve V3. After the reduced water moved into the heating device 100 is heated again, the object OB, such as a building, may be circulated.

6 is a view for explaining a process of providing makeup water using the expanded water reduction device shown in FIG. 2.

Referring to FIG. 6, when the heat exchange system 1000 is used for the first time or when the water level in the expansion tank 310 drops to 6v% or less, make-up water must be provided into the expansion tank 310.

In order to receive make-up water from the make-up water storage unit (MUWR), the fourth valve (V4) is opened to open the make-up water inlet pipe (MUWL), the second valve (V2) is opened, and the multi-pump (320) can be operated. have. The third valve V3 may be in an open state or may be in a closed state.

The make-up water through the multi-pump 320 may be provided from the make-up water storage unit MUWR to the expansion tank 310 through the make-up water inlet pipe MUWL.

When the water level in the expansion tank 310 is increased to 12v% or more due to the injection of make-up water, the fourth valve V4 is closed, and the process of providing the make-up water may be stopped.

On the other hand, when the amount of dissolved oxygen in the make-up water is larger than the set range, the fifth valve V5 is opened to discharge oxygen.

7 is a diagram illustrating a process of cleaning a heat exchange system using the expanded water reduction device shown in FIG. 2.

Referring to FIG. 7, the second valve V2 may be closed and the sixth valve V6 may be opened to open the branch pipe BL. By operating the multi-pump 320 and opening the seventh valve V7 to open the washing liquid inlet pipe CCL, the washing liquid may be provided from the washing liquid storage unit.

When the third valve V3 is opened and the main pump 200 is operated, the washing liquid may pass through the pipes in the object OB through the reduced water discharge pipe OWL. The cleaning solution cleans the inside of each of the pipes while passing the pipes in the object OB, and cleans the inside of each pipe while passing through the heating device 100, and the expansion tank through the expansion water inlet pipe (IWL) by opening the first valve (V1). (310) It may flow into the interior.

8 is a diagram illustrating a process of washing the heating device using the expanded water reduction device shown in FIG. 2.

Referring to FIG. 8, both the second valve V2 and the sixth valve V6 may be closed to separate them from the expansion tank 310. By operating the multi-pump 320 and opening the seventh valve V7 to open the washing liquid inlet pipe CCL, the washing liquid may be provided from the washing liquid storage unit CR. When the washing liquid flows into the first washing pipe CL1, the sixth valve V6 may be closed.

Close the third valve (V3) and open the eighth valve (V8) and the ninth valve (V9) to connect the heating device 100 and the first washing pipe (CL1) and the second washing pipe (CL2) in a closed circuit structure. I can. In a state in which the washing liquid is connected without disconnecting the heating device 100 while circulating the heating device 100, the first cleaning pipe CL1, and the second cleaning pipe CL2 using the multi-pump 320 Can be washed.

9 is a diagram illustrating a backflushing process of the heating device using the expanded water reduction device shown in FIG. 2.

Referring to FIG. 9, in general, the heating device 100 is in a high pressure state rather than the expansion tank 310. Using this phenomenon, the operation of the multi-pump 320 is stopped and only the eighth valve (V8) and the sixth valve (V6) are opened, so that water from the high-pressure heating device 100 side to the expansion tank 310 direction is reversed. Can be moved. While water moves in the reverse direction, foreign substances in the heating device 100 may be separated and introduced into the expansion tank 310 to be removed.

The above description is a detailed example for carrying out the present invention. In addition to the above-described embodiments, the present invention will include simple design changes or embodiments that can be easily changed. In addition, the present invention will also include techniques that can be easily modified and implemented using the embodiments. Accordingly, the scope of the present invention is limited to the above-described embodiments and should not be defined, and should be defined by the claims and equivalents of the present invention as well as the claims to be described later.

Claims (2)

In the expanded water reduction device for absorbing the pressure change of the heated water while circulating the inside of the object by using the main pump of the water heated by the heating device,
An expansion tank in which the interior is at atmospheric pressure;
An expansion water inlet pipe connecting the expansion tank and the object;
A reduced water discharge pipe connecting between the expansion tank and the main pump;
A multi-pump disposed between the expansion tank and the main pump among the reduced water discharge pipes;
A make-up water storage unit connected to one side of the expansion tank to provide make-up water into the expansion tank using the multi-pump;
A branch pipe connecting between the expansion tank and one side of the reduced water discharge pipe;
A washing liquid storage unit connected to the branch pipe and providing a washing liquid for washing the inside of the heat exchange system using the multi-pump;
An additional pipe connecting the expansion water inlet pipe and the expansion tank; And
Including an additional valve for opening and closing the additional pipe,
The heating device and the object are connected to each other by a hot water supply line,
The main pump and the heating device are connected to each other by a hot water return line,
The branch pipe and the hot water return line are connected to each other by a first washing pipe,
The reduced water discharge pipe and the hot water supply line are connected to each other by a second washing pipe,
The multi-pump is disposed between the first washing pipe and the second washing pipe,
When the first and second cleaning pipes and the heating device communicate with each other in a closed circuit structure, an expanded water reduction device for cleaning the interior of the heating device using the multi-pump. The method of claim 1,
The expanded water reduction device further comprising a filter disposed in the reduced water discharge pipe and filtering foreign substances of water flowing through the reduced water discharge pipe.

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