KR102420454B1 - Heat exchange system including oxygen exhausting line - Google Patents

Abstract

A heat exchange system according to an embodiment of the present invention is provided. The heat exchange system includes an expansion water reduction device for absorbing the pressure change of the heated water while circulating the water heated in the heating device inside the object using the main pump, wherein the expansion water reduction device includes an expansion tank, an expansion water A multi-pump disposed between the expansion tank and the main pump among the inlet pipe, the reduced water outlet pipe, and the reduced water outlet pipe, and a sensor that measures the amount of dissolved oxygen in water introduced through the expansion water inlet pipe. and an oxygen discharge path connected to the expansion tank and opened and closed according to the amount of dissolved oxygen measured by the sensor.

Description

HEAT EXCHANGE SYSTEM INCLUDING OXYGEN EXHAUSTING LINE

The present invention relates to a heat exchange system, and more particularly, to a heat exchange system comprising an expansion tank for absorbing pressure changes in heated water.

In a heat exchange system, when the temperature of water in a heating pipe increases, the volume of water expands, thereby increasing the pipe pressure. If the rise in the pipe pressure is left unattended, the heating pipe may be damaged and various devices may be damaged. 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.

If the water level in the expansion tank falls below the set range, make-up water is provided using an additional pump. Water quality management of the water circulating inside the heat exchange system is essential. A chemical pump is installed to clean the inside of the heat exchange system using a cleaning solution for water quality control. In addition to this, the heat exchange system requires a plurality of functions, and a plurality of devices for performing these functions must be added. As such, by adding a plurality of devices, the size of the heat exchange system becomes too large and the system becomes complicated.

The present invention is to solve the above technical problem, an object of the present invention is to provide a heat exchange system including a multi-pump having a plurality of functions.

The heat exchange system according to an embodiment of the present invention includes an expansion water reduction device for absorbing a pressure change of heated water while circulating the water heated in the heating device inside the object using a main pump, and the expansion water The reduction device has a rectangular parallelepiped structure and the inside is an expansion tank of atmospheric pressure; an expansion water inlet pipe connecting the expansion tank and the object; a reduced water discharge pipe connecting the expansion tank and the main pump; a multi-pump disposed between the expansion tank and the main pump in 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 sensor for measuring the amount of dissolved oxygen in the water introduced through the expansion water inlet pipe; an oxygen discharge path connected to the expansion tank and opened and closed according to the amount of dissolved oxygen measured by the sensor; a filter disposed in the reduced water discharge pipe and filtering foreign substances from the water flowing through the reduced water discharge pipe; an additional pipe connecting the expansion water inlet pipe and the expansion tank; and an additional valve for opening and closing the additional pipe.

In one embodiment, the heat exchange system, a hot water supply line for connecting between the heating device and the object; a hot water return line connecting the main pump and the heating device; a first washing pipe connecting the branch pipe and the hot water return line; and a second washing pipe connecting between the reduced water discharge pipe and the hot water supply line, wherein the multi-pump is disposed between the first washing pipe and the second washing pipe, and the first and second washing pipes When the and the heating device communicate with each other in a closed circuit structure, the inside of the heating device may be cleaned by using the multi-pump.

In another embodiment, when the multi-pump is stopped while the first and second washing pipes and the heating device communicate with each other in a closed circuit structure, the direction of water in the heating device may be reversed. The expansion tank may include a see-through window for checking the inside of the expansion tank. The heat exchange system may include a plurality of shelves installed on one surface of the expansion tank; and an automatic control panel installed on the other surface of the expansion tank to control the heat exchange system.

The heat exchange system according to an embodiment of the present invention includes an expansion water reduction device for absorbing a pressure change of heated water while circulating the water heated in the heating device inside the object using a main pump, and the expansion water The reduction device has a rectangular parallelepiped structure and the inside is an expansion tank of atmospheric pressure; an expansion water inlet pipe connecting the expansion tank and the object; a reduced water discharge pipe connecting the expansion tank and the main pump; a multi-pump disposed between the expansion tank and the main pump in 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 one side of the expansion tank and the reduced water discharge pipe; and a washing solution storage unit connected to the branch pipe to provide a washing solution for washing the inside of the heat exchange system using the multi-pump.

In one embodiment, the heat exchange system, the sensor for measuring the amount of dissolved oxygen in the water introduced through the expansion water inlet pipe; an oxygen discharge path connected to the expansion tank and opened and closed according to the amount of dissolved oxygen measured by the sensor; a filter disposed in the reduced water discharge pipe and filtering foreign substances from the water flowing through the reduced water discharge pipe; a plurality of shelves installed on one surface of the expansion tank; and an automatic control panel installed on the other surface of the expansion tank to control the heat exchange system.

In another embodiment, the heat exchange system, a hot water supply line for connecting between the heating device and the object; a hot water return line connecting the main pump and the heating device; a first washing pipe connecting the branch pipe and the hot water return line; and a second washing pipe connecting between the reduced water discharge pipe and the hot water supply line, wherein the multi-pump is disposed between the first washing pipe and the second washing pipe, and the first and second washing pipes When the and the heating device communicate with each other in a closed circuit structure, the inside of the heating device may be cleaned by using the multi-pump.

According to an embodiment of the present invention, expansion water or make-up water may be introduced into the expansion tank by using a multi-pump, the inside of the heat exchange system may be cleaned, and the inside of the heating device may be washed in a connected state without being separated. Therefore, it is possible to perform the above-mentioned various functions using one multi-pump without an additional pump, which is advantageous in terms of cost, the installation area of the heat exchange system is reduced, and the structure of the heat exchange system can be simplified.

A sensor capable of measuring the amount of dissolved oxygen and opening and closing an 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 pipes.

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, it is possible to directly check the water level in the expansion tank by installing a see-through window, 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 a heat exchange system according to an embodiment of the present invention.
2A and 2B are cross-sectional views for explaining the heat transfer plates of the heating device of the heat exchange system of FIG. 1 .
Figure 3 is a schematic view for explaining the expansion water reduction device according to an embodiment of the present invention.
Figure 4 is a schematic view for explaining the expansion water reduction device according to another embodiment of the present invention.
5 is a view for explaining a process of reducing the expanded water using the expanded water reduction device shown in FIG.
6 is a view for explaining the process of providing make-up water using the expanded water reduction device shown in FIG.
7 is a view for explaining a process of washing the heat exchange system using the expanded water reduction device shown in FIG.
8 is a view for explaining a process of washing the heating device using the expanded water reduction device shown in FIG.
9 is a view for explaining a backflushing process of the heating device using the expansion water reduction device shown in FIG.

Hereinafter, embodiments of the present invention will be described clearly and in detail to the extent that those skilled in the art can easily practice the present invention.

1 is a schematic view for explaining a heat exchange system according to an embodiment of the present invention.

Referring to FIG. 1 , 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 apparatus 100 may include a plurality of heat transfer plates HP.

2A and 2B are cross-sectional views illustrating heat transfer plates HP of the heating device 100 of the heat exchange system 1000 of FIG. 1 . 2A and 2B , 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 can play a supporting role. 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 plate HP1, a second heat plate HP2, a third heat plate, a fourth heat plate, and an n-1th heat plate. have. The first heat transfer plate HP1 is arranged with a first side facing up, the second heat plate HP2 is arranged with a second side opposite to the first surface facing up, and the third heat transfer plate is arranged with the first side facing up. Thus, the n-th heat transfer plate may be disposed while changing the vertical position. As described above, of the two fluids, the fluid passing through the first heat transfer plate HP1 may flow only on the surfaces (refer to FIG. 2A ) of odd-numbered heat transfer plates such as the first heat transfer plate HP1 and the third heat transfer plate. In addition, as shown in FIG. 2B , another fluid may flow only on the surfaces (refer to FIG. 2B ) of even-numbered heat transfer plates, such as the second and fourth insulating plates.

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. 1 , the fluid heated in the heating device 100 may be provided to a target object OB, for example, an apartment, a building, or a factory through a hot water supply line WSL. According to an embodiment, in the case of a fluid, for example, water provided through the hot water supply line WSL, it may be provided at about 60°C.

In the heat exchange system 1000, when the temperature of the fluid, for example, water increases, the volume of water expands (hereinafter referred to as expanded water) and the pipe pressure rises. may be damaged. In order to solve this problem, the expanded water reduction device 300 may be installed in the heat exchange system 1000 .

The expanded water circulating 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 the original state in the expanded water reduction device 300 is the reduced water outlet pipe (OWL). ) may circulate back to the heating device 100 through the hot water return line (WRL) connected to the main pump 200 through the. According to an embodiment, the 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 to prepare for a failure or a rest period.

Hereinafter, the expanded water reduction device 300 will be described in detail.

Figure 3 is a schematic view for explaining the expansion water reduction device according to an embodiment of the present invention, Figure 4 is a schematic view for explaining the expansion water reduction device according to another embodiment of the present invention.

3 and 4 , the expansion water reduction device 300 includes an expansion tank 310 , an expansion water inlet pipe (IWL) connected to one side of the expansion tank 310 , and the other side of the expansion tank 310 . A reduced water discharge pipe (OWL) connected to, a 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) may include 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. The inside of the expansion tank 310 of the present embodiment may have a rectangular parallelepiped shape rather than a semicircular pill shape because the inside of the expansion tank 310 is not maintained in a vacuum state, but is in an atmospheric pressure state. Accordingly, the manufacture and installation of the expansion tank 310 may be easy.

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

A plurality of shelves 302 (angles) can be arranged on the second sidewall of the expansion tank 310 to hang tools or work pieces. In addition, the thickness of the expansion tank 310 is as thin as about 2 mm. By installing the shelf 302 on the outer wall of the expansion tank 310 , the outer wall thickness of the expansion tank 310 is increased, thereby increasing the outer wall strength of the expansion tank 310 . can elevate

A see-through window 304 through which the inside of the expansion tank 310 can be checked 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, a see-through window 304 that cannot be installed in the expansion tank 310 under vacuum or high pressure may be installed to check the inside of the expansion tank 310 . 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 overflow of water in the expansion tank 310 can be prevented.

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 . After the water heated in the heating device 100 of the heat exchange system 1000 transfers and uses heat through the object OB, such as a building, it flows into the expansion tank 310 through the expansion water inlet pipe (IWL). can be In this case, the multi-pump 320 may be operated to provide the expansion water into the expansion tank 310 through the expansion water inlet pipe IWL.

A first valve V1 is installed in the expansion water inlet pipe IWL, and opening and closing of the expansion water inlet pipe IWL can be controlled. For 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 may be 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. .

Referring to FIG. 4 , the first valve V1 is automatically controlled by the automatic control panel 306 , and at least one of the first valve V1 , the first pressure gauge P1 , and the automatic control panel 306 is activated. 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. You can control the amount of inflatable water injected with The paris tube may be omitted.

3 and 4 , the expansion water introduced into the expansion tank 310 through the multi-pump 320 after opening the first valve V1 is temporarily stored inside the expansion tank 310, and the stored expansion As the water naturally cools and the temperature drops, the expanded water can be returned to its original state. The expanded water (hereinafter, reduced water) returned 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 .

Among the reduced water discharge pipe (OWL), the second valve (V2) and the 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 tag 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. For 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, and the reduced water discharge pipe OWL ) can measure the internal pressure. 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 automatically opened and closed.

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 anywhere in the reduced water discharge pipe OWL, and the present invention does not limit the position of the filter FT. By installing the filter FT, the water quality of the reduced expanded water can be improved, and foreign substances can be prevented from accumulating in the pipes through which the reduced expanded water flows.

The expansion water reduction device 300 is connected to the expansion tank 310 and provides a make-up water storage unit (MUWR) and a make-up water storage unit (MUWR) and an expansion tank 310 to provide make-up water into the expansion tank 310 . It may further include a make-up water inlet pipe (MUWL) for 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 operated for the first time.

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. For 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 less than a set range, the fourth valve V4 is opened to receive supplemental water to the expansion tank 310 . For example, when the water in the expansion tank 310 is 6v% or less, the fourth valve V4 is opened to receive make-up water. When the water in the expansion tank 310 is 12v% or more, the fourth valve V4 may close and stop providing make-up water.

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 a 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 ( 310) using the multi-pump 320 connected to provide the make-up water, so a separate pump is not required. Accordingly, the structure of the heat exchange system 1000 is simplified, and there is a beneficial effect in terms of cost. In addition, in the conventional heat exchange system 1000, a pressure reducing valve is necessarily required in the make-up water line connected to a separate pump, but in this embodiment, the valve installed in the make-up water inlet pipe (MUWL) is a solenoid valve, and the pressure reducing valve is unnecessary. .

Meanwhile, referring to FIG. 4 , an additional pipe (ADL2) connected to the make-up water inlet pipe (MUWL) and an additional valve disposed among the additional pipe (ADL2) in case the fourth valve (V4) malfunctions or breaks down (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 make-up water inlet pipe (MUWL).

Referring to FIGS. 3 and 4 , the expanded water reduction device 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 this 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 introduce the expanded water It is also possible to measure the amount of dissolved oxygen in the expanded water flowing through the tube (IWL). Therefore, the present invention does not limit the position of the sensor SS for measuring the dissolved oxygen amount. Meanwhile, although the sensor SS has been described as measuring the amount of dissolved oxygen in this embodiment, it can measure the overall quality of water in the expanded water.

The expansion water reduction device 300 may further include a dissolved oxygen discharge path EX_O2 communicating with the expansion tank 310 . A fifth valve V5 may be 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 and the amount of dissolved oxygen is greater than a set range, the fifth valve V5 is automatically opened to release dissolved oxygen. It can be discharged along the oxygen discharge path (EX_O2). Since oxygen in the expansion water is removed, corrosion of pipes by oxygen while circulating the heat exchange system 1000 may be minimized.

The expansion water reduction device 300 may further include a branch pipe (BL) connecting 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 . A sixth valve V6 is installed in the branch pipe BL to control opening and closing of the branch pipe BL.

The expanded water reduction device 300 includes a washing solution storage unit (CR) that provides a washing solution for washing the inside of the heat exchange system 1000, and a washing solution inlet pipe connecting the washing solution 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 solution inlet pipe CCL communicates with the branch pipe BL, and opening and closing of the washing solution inlet pipe CCL may be controlled by the seventh valve V7 installed in the washing solution inlet pipe CCL.

In the conventional heat exchange system 1000 , a separate chemical feeder pump must be provided to wash the inside of the heat exchange system 1000 . In this embodiment, the cleaning liquid inlet pipe CCL is connected to the branch pipe BL ), since the washing solution is provided using the multi-pump 320 connected thereto, a separate pump is not required. Accordingly, the structure of the heat exchange system 1000 is simplified, and there is a beneficial 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 below.

The expanded water reduction device 300 may further include washing pipes for washing the inside of the heating device 100 . In this embodiment, the two washing pipes are exemplarily described, but for convenience of description, 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) can be connected. The other end of the first washing pipe CL1 may be disposed between the washing solution 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 the object OB such as a building, and the other end of the second washing pipe CL2 is reduced water It may be connected to the discharge pipe (OWL). The other end of the second cleaning 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 is installed in the second washing pipe 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 . For 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 the other valves V1, V2, V3, V4, V5, V6, and V7 are When closed and the eighth valve V8 and the ninth valve V9 are open, the heating device 100 may have a closed circuit-like structure by the first cleaning pipe CL1 and the second washing pipe CL2. . Therefore, the inside of the heating device 100 may be washed with a washing solution using the multi-pump 320 . Therefore, it is possible to clean the heating device 100 in a connected state (cleaning in place: CIP) without separate separation. The process of cleaning the heating device 100 will be described in detail later.

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

As such, the multi-pump 320 not only provides the expansion water to the expansion tank 310 , but also provides make-up water to the expansion tank 310 , washes the inside of the heat exchange system 1000 , and the heating device 100 . ) can perform several functions, such as cleaning the interior. 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, the installation area of the heat exchange system 1000 is reduced, and the heat exchange system ( 1000) the structure can be simplified.

Meanwhile, in this embodiment, the multi-pump 320 has been described as having 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 , after the water heated by the heating device 100 circulates through an object OB such as a building, it may be introduced into the expanded water inlet pipe IWL in an expanded state. The first pressure gauge P1 may measure the pressure of the expanded water inlet pipe IWL into which the expanded water is introduced, 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 . Expansion water temporarily stored in the expansion tank 310 may be reduced in temperature due to natural cooling, thereby being reduced to its original state and converted into reduced water.

Meanwhile, while the expanded water is temporarily stored inside the expansion tank 310 , the amount of dissolved oxygen in the expansion water may be measured through a sensor SS that measures the amount of dissolved oxygen disposed inside 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 may be opened, and oxygen dissolved in the expansion water may be 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 operates, the reduced water may move through the reduced water discharge pipe OWL with 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 passing 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 open third valve V3. After the reduced water moved into the heating device 100 is heated again, it may circulate the object OB, such as a building.

6 is a view for explaining the process of providing make-up water using the expanded water reduction device shown in FIG.

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), and the second valve (V2) is opened to operate the multi-pump (320). 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 into 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 by injecting the 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 greater than the set range, the fifth valve V5 is opened to discharge oxygen.

7 is a view for explaining a process of washing the heat exchange system using the expanded water reduction device shown in FIG.

Referring to FIG. 7 , the branch pipe BL may be opened by closing the second valve V2 and opening the sixth valve V6 . The washing solution may be supplied from the washing solution storage unit by operating the multi-pump 320 and opening the seventh valve V7 to open the washing solution inlet pipe CCL.

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 washing liquid passes through the pipes in the object OB to wash the inside of each of the pipes, washes while passing the heating device 100, and opens the first valve V1 to open the expansion tank through the expansion water inlet pipe IWL. 310 may be introduced into the interior.

8 is a view for explaining a process of washing the heating device using the expanded water reduction device shown in FIG.

Referring to FIG. 8 , both the second valve V2 and the sixth valve V6 may be closed to be separated from the expansion tank 310 . The washing solution may be supplied from the washing solution storage unit CR by operating the multi-pump 320 and opening the seventh valve V7 to open the washing solution inlet pipe CCL. 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. can Using the multi-pump 320 , the washing liquid circulates through the closed circuit heating device 100 , the first washing pipe CL1 , and the second washing pipe CL2 while connected to the heating device 100 without separating the heating device 100 . can be washed

9 is a view for explaining a backflushing process of the heating device using the expansion water reduction device shown in FIG.

Referring to FIG. 9 , in general, the heating device 100 has a higher pressure 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 toward the expansion tank 310 in the reverse direction can be moved While the 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 descriptions are specific embodiments for carrying out the present invention. In addition to the above-described embodiments, the present invention will also include simple design changes or easily changeable embodiments. In addition, the present invention will include techniques that can be easily modified and implemented using the embodiments. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be defined by the claims described below as well as the claims and equivalents of the present invention.

Claims (2)

In the heat exchange system comprising an expansion water reduction device for absorbing the pressure change of the heated water while circulating the inside of the object using the main pump of the water heated in the heating device,
The expansion water reduction device,
an expansion tank having a rectangular parallelepiped structure and having an internal atmospheric pressure;
an expansion water inlet pipe connecting the expansion tank and the object;
a reduced water discharge pipe connecting the expansion tank and the main pump;
a multi-pump disposed between the expansion tank and the main pump in 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 sensor for measuring the amount of dissolved oxygen in the water introduced through the expansion water inlet pipe;
an oxygen discharge path connected to the expansion tank and opened and closed according to the amount of dissolved oxygen measured by the sensor;
a filter disposed in the reduced water discharge pipe and filtering foreign substances from the water flowing through the reduced water discharge pipe;
an additional pipe connecting the expansion water inlet pipe and the expansion tank; and
and an additional valve for opening and closing the additional pipe. The method of claim 1,
a branch pipe connecting one side of the expansion tank and the reduced water discharge pipe;
a washing solution storage unit connected to the branch pipe to provide a washing solution for washing the inside of the heat exchange system using the multi-pump;
a hot water supply line connecting the heating device and the object;
a hot water exchange line connecting the main pump and the heating device;
a first washing pipe connecting the branch pipe and the hot water return line; and
Further comprising a second washing pipe connecting between the reduced water discharge pipe and the hot water supply line,
When the multi-pump is disposed between the first washing pipe and the second washing pipe, and the first and second washing pipes and the heating device communicate with each other in a closed circuit structure, the heating is performed using the multi-pump Heat exchange system for cleaning the inside of the device.

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