KR20230006378A - Gas-water separator - Google Patents

Abstract

The present invention relates to a gas-water separator, which can remove the dissolved oxygen in heated water while the water heated in a heating device is circulated in a target object. To this end, the gas-water separator according to one embodiment of the present invention comprises: an expansion tank in which a space to accommodate water is formed; an expansion water introduction pipe which connects the expansion tank to the target such that water may be moved; a return water discharge pipe which connects the expansion tank to a heating device such that water may be moved; a multi-pump which applies force such that water in the expansion tank may be discharged by means of the return water discharge pipe; a first valve which opens and closes the expansion water introduction pipe; a first pressure switch which measures the pressure of the other end of the return water discharge pipe, sends a signal to open the first valve to the first valve when the measured pressure is a first pressure or higher, and sends a signal to close the first valve to the first valve when the measured pressure is lower than the first pressure; and a second pressure switch which measures the pressure of the other end of the return water discharge pipe, sends a signal to operate the multi-pump to the multi-pump when the measured pressure is a second pressure or less, and sends a signal to stop the multi-pump to the multi-pump when the measured pressure is higher than the second pressure. Moreover, the second pressure is a pressure lower than the first pressure. Therefore, fabrication costs and maintenance and repair costs may be reduced.

Description

Water separator {GAS-WATER SEPARATOR}

The present invention relates to a water separator, and more particularly, to a water separator for treating expanded water and removing dissolved oxygen in a heat exchange system.

In a heat exchange system used for district heating or the like, when the temperature of water in a heating pipe rises, the volume of the water expands, resulting in an increase in pipe pressure. If such an increase in piping pressure is left unattended, damage to the heating piping and damage to various devices may occur. Therefore, in order to solve this problem, an expansion tank is usually installed in the heating pipe.

The expansion tank may be provided with a water separation device that removes dissolved oxygen from water circulating in the heat exchange system while performing the function of the expansion tank described above. A plurality of valves are provided in the water separation device to open and close each pipe to control treatment operations in each process, such as an expanded water treatment process and a dissolved oxygen treatment process.

With the recent development of digital technology, each valve of the water separator is controlled by a digital control device in which a number of electronic devices are combined. That is, a pressure gauge is installed in each pipe to be measured, the pressure measured by the pressure gauge is transmitted to a digital control device, and the digital control device controls the water separator by opening and closing each valve according to the measured pressure condition. do.

However, when such a digital control device is provided, the possibility of malfunction is high, the price of the digital control device itself is high, and maintenance/repair costs are also increased.

Republic of Korea Patent Registration No. 10-0702469 (2007-03-27)

The present invention is to solve the above problems, and an object of the present invention is to provide a water separator that does not require a digital control device.

In addition, an object of the present invention is to provide a water separation device capable of reducing manufacturing cost and maintenance cost.

The present invention provides a water separator for removing dissolved oxygen in the heated water while circulating the water heated by the heating device inside the object. According to one embodiment, the air separation device includes: an expansion tank in which a space for receiving water is formed; an expansion water inlet pipe connecting the expansion tank and the object so that water can move; a reduced water discharge pipe connecting the expansion tank and the heating device so that water can move; a multi-pump applying force so that the water in the expansion tank is discharged through the reduced water discharge pipe; a first valve opening and closing the expansion water inlet pipe; Measure the pressure of the other end of the reduced water discharge pipe, send a signal to open the first valve to the first valve when the measured pressure is greater than or equal to the first pressure, and when the measured pressure is less than the first pressure, the first a first pressure switch for sending a valve closing signal to the first valve; and measuring the pressure of the other end of the reduced water discharge pipe, sending a signal to operate the multi-pump to the multi-pump when the measured pressure is less than the second pressure, and when the measured pressure exceeds the second pressure, the multi-pump and a second pressure switch for sending a signal for stopping the pump to the multi-pump, wherein the second pressure is lower than the first pressure.

A third valve including a check valve opened so that water in the reduced water discharge pipe flows only in a direction toward the heating device may be further included.

a make-up water storage unit supplying make-up water into the expansion tank; a make-up water inlet pipe connecting the make-up water storage unit and the expansion tank; a fourth valve opening and closing the make-up water inlet pipe; And measuring the water level in the expansion tank, sending a signal to open the fourth valve to the fourth valve when the measured water level is lower than the first water level, and closing the fourth valve when the measured water level is higher than the second water level. A level sensor for sending a signal to the fourth valve may be further included.

a dissolved oxygen exhaust passage communicating with the expansion tank; a fifth valve opening and closing the dissolved oxygen outlet; and a sensor that measures the amount of dissolved oxygen in the water in the expansion tank and transmits a signal to open the fifth valve to the fifth valve when the measured amount of dissolved oxygen is greater than a set value.

The water separator according to the present invention does not require a digital control device.

In addition, the water separator according to the present invention can reduce manufacturing cost and maintenance cost.

1 is a schematic diagram showing an example of a heat exchange system to which a water separator according to an embodiment of the present invention is applied.
2A and 2B are cross-sectional views illustrating heat transfer plates HP of the heating device of the heat exchange system of FIG. 1 .
3 is a schematic diagram for explaining a water separator according to an embodiment of the present invention.
4 is a schematic diagram for explaining a water separator according to another embodiment of the present invention.
FIG. 5 is a diagram explaining a process of reducing expanded water using the air separator shown in FIG. 3 .
FIG. 6 is a diagram explaining a process of providing make-up water using the water separator shown in FIG. 3 .
FIG. 7 is a diagram explaining a process of cleaning the heat exchange system using the water separator shown in FIG. 3 .
FIG. 8 is a diagram explaining a process of washing a heating device using the water separation device shown in FIG. 3 .
FIG. 9 is a diagram explaining a back flushing process of a heating device using the water separation device shown in FIG. 3 .

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 diagram showing an example of a heat exchange system to which a water separator according to an embodiment of the present invention is applied. Referring to FIG. 1 , a heat exchange system 1000 may include a heating device 100, a main pump 200, and a water separator 300. The heating device 100 may have a plate-like structure. The plate-type heating device 100 may include a plurality of heat transfer plates HP.

2A and 2B are cross-sectional views for explaining the heat transfer plates HP of the heating device of the heat exchange system of FIG. 1 . Referring to FIGS. 2A and 2B , each heat transfer plate HP may have a thin and wrinkled structure. Two types of fluids with different characteristics such as temperature pass through the heat transfer plates HP. The wrinkles 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 is determined. 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 passages 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, to n−1th heat transfer plates. there is. The first heat transfer plate HP1 is disposed with the first surface facing up, the second heat transfer plate HP2 is disposed such that the second surface opposite to the first surface faces upward, and the third heat transfer plate is disposed such that the first surface faces upward. Thus, the nth heat transfer plate may be disposed while changing its vertical position. As described above, among the two fluids, the fluid passing through the first heat transfer plate HP1 may flow only on surfaces of odd-numbered heat transfer plates such as the first heat transfer plate HP1 and the third heat transfer plate (see FIG. 2A ). Also, as shown in FIG. 2B , other fluids may flow only on 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. 1 , the fluid heated by the heating device 100 may be provided to a target object OB, such as an apartment building, a building, or a factory, through a hot water supply line WSL. According to one embodiment, in the case of a fluid provided through the hot water supply line (WSL), for example, water, it may be provided at about 60°C.

When the temperature of a fluid, for example water, in the heat exchange system 1000 rises, the volume of the water expands (hereinafter referred to as expansion water) and the pipe pressure rises. The device may be damaged. In addition, dissolved oxygen dissolved in water circulating in the heat exchange system 1000 may cause corrosion of pipes and the like. A water separator 300 may be installed in the heat exchange system 1000 to solve these problems.

The expansion water circulating through the object OB is supplied to the separator 300 through the expansion water inlet pipe IWL, and the expansion water returned to its original state in the separator 300 passes through the reduced water outlet pipe OWL. It can circulate back to the heating device 100 through the hot water return line (WRL) connected to the main pump 200 through this. According to one embodiment, the fluid introduced 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 failure or shutdown.

Hereinafter, the water separator 300 will be described in detail.

3 is a schematic diagram for explaining a water separation device according to an embodiment of the present invention, and FIG. 4 is a schematic diagram for explaining a water separation device according to another embodiment of the present invention. 3 and 4, the air separation device 300 includes an expansion tank 310, an expansion water inlet pipe (IWL) connected to one side of the expansion tank 310, and a connection to the other side of the expansion tank 310. A reduced water discharge pipe (OWL), a multi-pump 320 disposed in the reduced water discharge pipe (OWL), a plurality of valves (V1, V2, V3, V4, V5, V6, V7, V8, V9), a plurality of pressure switches (PS1) , PS2) and a level sensor LS.

Each of the valves (V1, V2, V3, V4, V5, V6, V7, V8, V9) can open and close some of them automatically according to specific conditions as will be described below, and all of them according to the user's operation. It can be opened and closed manually.

Expansion tank 310 may be a closed expansion tank 310 . According to an embodiment, the expansion tank 310 may have a rectangular parallelepiped structure in which a space capable of accommodating fluid is formed. 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 top and bottom may have a rectangular parallelepiped shape instead of a semicircular pill shape. Accordingly, manufacturing and installation of the expansion tank 310 may be facilitated. A vacuum release device (not shown) communicating with the outside may be installed on one side of the expansion tank 310 to maintain an internal atmospheric pressure.

On the first side wall of the expansion tank 310, a plurality of shelves 302 (angles) on which tools or work items can be hung may be disposed. In addition, since the thickness of the expansion tank 310 is as thin as about 2 mm, the thickness of the outer wall of the expansion tank 310 is increased by installing the shelf 302 on the outer wall of the expansion tank 310, thereby increasing the strength of the outer wall of the expansion tank 310. can elevate

A viewing window 304 through which the inside of the expansion tank 310 can be checked may be installed on the second side wall of the expansion tank 310 . In the case of a general expansion tank, it is in a vacuum or high-pressure state, and due to the pressure difference with the outside, it is difficult to install a viewing window 304 or the like because the top and bottom are provided in a semicircular shape and the body has a cylindrical shape as a whole. However, as described above, since the inside of the expansion tank 310 is at atmospheric pressure and is thus provided in a rectangular parallelepiped shape, a viewing window 304, which cannot be installed in the expansion tank 310, is installed so that the inside of the expansion tank 310 can be checked. 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 overflowing of water in the expansion tank 310 can be prevented. Alternatively, a separate water level gauge may be provided together with the viewing window 304 .

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 by the heating device 100 of the heat exchange system 1000 transfers and uses heat through an object OB such as a building, it flows into the expansion tank 310 through the expansion water inlet pipe IWL. It can be. At this time, the expansion water may be supplied into the expansion tank 310 through the expansion water inlet pipe IWL by operating the multi-pump 320 .

A first valve (V1) is installed in the expansion water inlet pipe (IWL), and can control the opening and closing of the expansion water inlet pipe (IWL). For example, the first valve V1 may include a solenoid valve.

In addition, a first pressure switch PS1 may be further installed in the expansion water inlet pipe IWL. The first pressure switch PS1 is disposed between the other end of the reduced water discharge pipe OWL and the third valve V3, measures the pressure inside the reduced water discharge pipe OWL, and generates a signal according to the measured pressure. The solenoid valve of the first valve V1 may be opened and closed by a signal from the first pressure switch PS1. For example, the first pressure switch PS1 transmits an open signal to the solenoid valve of the first valve V1 when the measured pressure is higher than a specific pressure, and accordingly, the solenoid valve of the first valve V1 opens. The expansion water inlet pipe (IWL) can be opened. In addition, the first pressure switch (PS1) transmits a closing signal to the solenoid valve of the first valve (V1) when the measured pressure is less than the specific pressure, and accordingly, the solenoid valve of the first valve (V1) is closed and expanded The water inlet pipe (IWL) may be closed.

Referring to FIG. 4, the first valve V1 is controlled by the first pressure switch PS1, in case at least one of the first valve V1 and the first pressure switch PS1 malfunctions or fails. It may further include an additional pipe (ADL1) connected to the expansion water inlet pipe (IWL) and an additional valve (ADV1) disposed in the additional pipe (ADL1). An additional pipe may be disposed between the first valve V1 and the other end of the expansion water inlet pipe IWL. Also, the additional valve ADV1 may be a manual valve. Therefore, it is possible to manually control the opening and closing of the expansion water inlet pipe (IWL).

According to one embodiment, a taper pipe (not shown) is additionally installed between one end of the expansion water inlet pipe (IWL) and the first valve (V1) to expand through the expansion water inlet pipe (IWL). The amount of expansion water injected into the tank 310 can be adjusted. The bias tube may be omitted.

3 and 4, the expansion water introduced into the expansion tank 310 through the multi-pump 320 by opening the first valve V1 is temporarily stored inside the expansion tank 310, and the stored expansion water is stored therein. The water is naturally cooled and the temperature is lowered so that the expanded water can be restored to its original state. The expanded water reduced to its original state (hereinafter referred to as reduced water) may move to the heating device 100 through the reduced water discharge pipe (OWL) and continuously circulate through 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 .

A second valve V2 and a third valve V3 for opening and closing the reduced water discharge pipe OWL may be installed in the reduced water discharge pipe OWL. The second valve V2 may be disposed between the expansion tank 310 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, the second valve V2 may include a gate valve that is manually opened and closed. The third valve (V3) may include a check valve that opens only in one direction in which the water in the reduced water discharge pipe (OWL) is directed toward the thermal device (100). It is possible to prevent the reduced water in the reduced water discharge pipe OWL from flowing back into the expansion tank 310 by the third valve V3.

In addition, a second pressure switch PS2 may be further installed in the reduced water discharge pipe OWL. The second pressure switch PS2 may be disposed between the other end of the reduced water discharge pipe OWL and the third valve V3 to measure the internal pressure of the reduced water discharge pipe OWL and generate a signal according to the measured pressure. The multi-pump 320 may be operated and stopped by a signal of the second pressure switch PS2. For example, the second pressure switch PS2 transmits an operation signal to the multi-pump 320 when the measured pressure is less than or equal to a specific pressure lower than the specific pressure that is the reference of the first pressure switch PS1. Multi-pump 320 may be operated. In addition, the second pressure switch PS2 transmits a stop signal to the multi-pump 320 when the measured pressure exceeds a specific pressure, and thus the multi-pump 320 can be stopped. Unlike this, the multi-pump 320 may be manually operated and stopped by a user's manipulation.

The air separator 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 one 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 location of the filter FT is not limited by the present invention. By installing the filter FT, it is possible to improve the quality of the reduced expansion water and to prevent accumulation of foreign substances in pipes through which the reduced expansion water flows.

The air separator 300 includes a make-up water storage unit MUWR connected to the expansion tank 310 and supplying make-up water into the expansion tank 310, and the make-up water storage unit MUWR and the expansion tank 310. It may further include a make-up water inlet pipe (MUWL) for connection. 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 replenishment water is water supplied into the heat exchange system 1000 when water is insufficient 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 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 level sensor LS and controlled by the level sensor LS.

The level sensor LS may be provided as an electrode type including a plurality of electrodes having different lengths. The level sensor (LS)S sends open and close signals to the solenoid valve of the fourth valve V4 according to the water level of the expansion tank 310 . For example, according to the value measured by the level sensor LS, when the amount of water in the expansion tank 310 is less than a set range, the fourth valve V4 is opened to provide supplemental water to the expansion tank 310. can receive For example, when the water in the expansion tank 310 is 6v% or less, the fourth valve V4 is opened and supplemental water may be provided. When the water in the expansion tank 310 is 12v% or more, the fourth valve V4 is closed and supplementary water supply may be stopped.

In addition, a pressure gauge P may be further installed in the make-up water inlet pipe MUWL. The pressure gauge P 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 pressure gauge P may be omitted.

In the existing heat exchange system 1000, a separate supplementary water line and a pump are required to provide supplemental water. In this embodiment, the supplementary water inlet pipe MUWL is connected to the expansion tank 310 and the expansion tank ( 310), a separate pump is not required because replenishment water is provided using the multi-pump 320 connected to the multi-pump 320. Therefore, the structure of the heat exchange system 1000 is simplified and there is a beneficial effect in terms of cost.

A pressure reducing valve (D) may be installed in the make-up water inlet pipe (MUWL). A pressure reducing valve (D) is provided to reduce the pressure supplied with make-up water, so that the pressure of the expansion tank 310 and the reduced water discharge pipe (OWL) is excessively increased by the make-up water, thereby generating a signal of the first pressure switch (PS1). It is possible to prevent the first valve V1 from being erroneously opened when the pressure is equal to or higher than a certain standard pressure.

On the other hand, referring to FIG. 4, an additional pipe (ADL2) connected to the make-up water inlet pipe (MUWL) and an additional pipe in case the fourth valve (V4) and/or the pressure reducing valve (D) malfunction or fail. An additional valve (ADV2) disposed in (ADL2) may be further included. The additional valve ADV2 may be a manual valve. Therefore, it is possible to manually control the opening and closing of the make-up water inlet pipe MUWL.

Referring to FIGS. 3 and 4 , the air separation device 300 may further include a sensor SS disposed inside the expansion tank 310 to measure the amount of dissolved oxygen in the expansion water. In this embodiment, it is described that the sensor SS for measuring the amount of dissolved oxygen is 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 expansion water. It is also possible to measure the amount of dissolved oxygen in the expansion water flowing through the tube (IWL). Therefore, the present invention does not limit the location of the sensor SS for measuring the amount of dissolved oxygen. Meanwhile, in this embodiment, the sensor SS has been described as measuring the amount of dissolved oxygen, but may measure the overall water quality in the expansion water.

The air separation device 300 may further include a dissolved oxygen exhaust passage EX_O2 communicating with the expansion tank 310 . A fifth valve V5 is disposed in the dissolved oxygen exhaust path EX_O2 to open and close the dissolved oxygen exhaust path EX_O2. The fifth valve V5 may include a solenoid valve.

The fifth valve V5 may be connected to the sensor SS for measuring the amount of dissolved oxygen. The sensor SS for measuring the amount of dissolved oxygen sends an open signal or a closed signal to the solenoid valve of the fifth valve V5 according to the measured amount of dissolved oxygen in the expansion water. For example, according to the value measured by the sensor SS, if the amount of dissolved oxygen in the expansion water is greater than a set value, the fifth valve V5 opens, and oxygen can be discharged along the dissolved oxygen discharge path EX_O2. . Since oxygen in the expansion water is removed, corrosion of pipes due to oxygen during circulation of the heat exchange system 1000 may be minimized.

The air separation 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 water separator 300 includes a washing liquid storage unit (CR) providing a washing liquid for cleaning the inside of the heat exchange system 1000 and a washing liquid inlet pipe (CCL) connecting the washing liquid storage unit (CR) and the branch pipe (BL). ) 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) communicates with the branch pipe (BL), and opening and closing of the washing liquid inlet pipe (CCL) can be controlled by a seventh valve (V7) installed in the washing liquid inlet pipe (CCL). The cleaning solution may contain a facility protectant that can prevent rusting of pipes and other fittings. The sixth valve V6 and the seventh valve V7 may be manually opened and closed.

In the existing heat exchange system 1000, a separate chemical feeder pump must be provided to clean the inside of the heat exchange system 1000, but in this embodiment, the washing liquid inlet pipe connected to the branch pipe BL ( CCL) and the multi-pump 320 are used to provide the washing solution, so a separate pump is not required. Therefore, 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 later.

The water separation device 300 may further include cleaning pipes for cleaning the inside of the heating device 100 . In this embodiment, 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 an expansion tank ( 310) can be connected. The other end of the first cleaning pipe CL1 may be disposed at an upper end of the expansion tank 310 .

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 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) is installed in the second washing pipe (CL2). V9) can be installed. The eighth valve V8 and the ninth valve V9 may be manually opened and closed, respectively. For example, each of the eighth valve V8 and the ninth valve V9 may include a ball valve that is manually opened and closed.

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 structure such as a closed circuit by the first washing pipe CL1 and the second washing pipe CL2. . Therefore, the inside of the heating device 100 can be cleaned using the washing liquid by using the multi-pump 320 . Therefore, it is possible to clean in a connected state (cleaning in place: CIP) without separating the heating device 100 separately. A process of cleaning 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 the water in the heating device 100, foreign substances in the heating device 100 can be moved to the inside of the expansion tank 310 and removed.

As such, the multi-pump 320 can perform various functions, such as cleaning the inside of the heat exchange system 1000 and cleaning the inside of the heating device 100, as well as providing expansion water to the expansion tank 310. can 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) 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 a submersible pump disposed inside the expansion tank 310. there is.

FIG. 5 is a diagram explaining a process of reducing expanded water using the air separator shown in FIG. 3 . Referring to FIG. 5 , after the water heated by the heating device 100 circulates through the object OB, such as a building, it may flow into the expansion water inlet pipe IWL in an expanded state. The pressure of the reduced water discharge pipe (OWL) is measured by the first pressure switch (PS1), and the first pressure switch (PS1) S1 gives an open signal to the solenoid valve of the first valve (V1) when the measured pressure is higher than a specific pressure value. It is possible to open and close the first valve (V1) by sending.

Accordingly, when the pressure measured by the first pressure switch PS1 is equal to or greater than a specific pressure value, the first valve V1 is opened, and the expansion water may move into the expansion tank 310 . The temperature of the expansion water temporarily stored in the expansion tank 310 is lowered by natural cooling, so that it can be reduced to its original state and converted into reduced water.

Meanwhile, while the expansion 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 disposed inside the expansion tank 310 for measuring the amount of dissolved oxygen. The sensor SS for measuring the amount of dissolved oxygen sends an open signal or a closed signal to the solenoid valve of the fifth valve V5 according to the measured amount of dissolved oxygen in the expansion water. For example, according to the value measured by the sensor SS, if the amount of dissolved oxygen in the expansion water is greater than a set value, the fifth valve V5 is opened by a signal from the sensor SS that measures the amount of dissolved oxygen, and the expansion water Oxygen dissolved in the liquid may be vaporized and discharged along the dissolved oxygen discharge path (EX_O2). In addition, if the amount of dissolved oxygen in the expansion water is less than a set value according to the value measured by the sensor SS, the fifth valve V5 is closed by a signal from the sensor SS that measures the amount of dissolved oxygen.

The second pressure switch PS2 also measures the pressure of the reduced water discharge pipe OWL, and sends an operation signal to the multi-pump 320 to operate the multi-pump 320 when the measured pressure is less than a specific pressure value.

Therefore, when the multi-pump 320 is operated when the pressure measured by the second pressure switch PS2 is less than a specific pressure value while the second valve V2 is open, the reduced water is reduced by the suction power of the multi-pump 320. It can move through the discharge pipe (OWL). 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 can be removed by the filter FT.

The reduced water passing through the multi-pump 320 may pass through the third valve V3, pass through the reduced water discharge pipe OWL, and move into the heating device 100 through the main pump 200. After the reduced water moved into the heating device 100 is heated again, it may circulate through an object OB such as a building.

FIG. 6 is a diagram explaining a process of providing make-up water using the water separator shown in FIG. 3 . 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 below 6v%, supplemental water must be supplied into the expansion tank 310 .

In order to receive supplemental water from the supplementary water storage unit MUWR, when the water level in the expansion tank 310 measured by the level sensor LS is 6v% or less with the second valve V2 open, the level sensor (LS) may send an open signal to open the fourth valve (V4) to open the make-up water inlet pipe (MUWL). Therefore, make-up water may be supplied from the make-up water storage unit MUWR to the inside of the expansion tank 310 through the make-up water inlet pipe MUWL.

When the water level in the expansion tank 310 rises to 12v% or higher due to the injection of make-up water, the fourth valve V4 is closed by the signal of the level sensor LS that measures this, and the process of providing make-up water is may be stopped

Meanwhile, when the amount of dissolved oxygen in the replenishment water is greater than the set range, as described above, the fifth valve V5 is opened by the sensor SS for measuring the amount of dissolved oxygen, and oxygen can be discharged.

FIG. 7 is a diagram explaining a process of cleaning the heat exchange system using the water separator shown in FIG. 3 . 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 liquid may be supplied from the washing liquid storage unit by operating the multi-pump 320 and opening the seventh valve V7 to open the washing liquid inlet pipe CCL.

When the main pump 200 is operated, the washing liquid may pass through pipes in the object OB through the reduced water discharge pipe OWL. The washing liquid cleans the inside of each of the pipes while passing through the pipes in the object OB, passes through the heating device 100, and opens the first valve V1 to pass through the expansion water inlet pipe IWL to the expansion tank. (310) can flow into the interior.

FIG. 8 is a diagram explaining a process of washing a heating device using the water separation device shown in FIG. 3 . Referring to FIG. 8 , the second valve V2 is closed. The washing liquid may be supplied from the washing liquid storage unit CR by operating the multi-pump 320 and opening the seventh valve V7 to open the washing liquid inlet pipe CCL. Close the third valve (V3) and open the eighth valve (V8) and the ninth valve (V9), the heating device 100, the first cleaning pipe (CL1), the second washing pipe (CL2) and the expansion tank (310) can be connected in a closed loop structure. The heating device 100 is separated while the washing liquid circulates through the closed circuit heating device 100, the first washing pipe CL1, the second washing pipe CL2, and the expansion tank 310 using the multi-pump 320. It can be cleaned while connected without having to do it.

FIG. 9 is a diagram explaining a back flushing process of a heating device using the water separation device shown in FIG. 3 . Referring to FIG. 9 , the heating device 100 is in a higher pressure state than the expansion tank 310 . If this phenomenon is used, the operation of the multi-pump 320 is stopped and only the eighth valve (V8) and the sixth valve (V6) are opened to supply water from the high-pressure heating device 100 in the opposite direction to the expansion tank 310. can be moved While the water moves in the reverse direction, foreign substances in the heating device 100 are separated and introduced into the expansion tank 310 to be removed.

As described above, the air separation device 300 according to the embodiments of the present invention is directly connected to each of the valves and the multi A signal is transmitted to the pump 320, and each valve and the multi-pump 320 are controlled according to the signal, so a separate digital control device is not required. Therefore, the water separation device 300 according to an embodiment of the present invention can reduce manufacturing cost and maintenance cost due to the provision of a digital control device. However, although not shown in the drawings of this specification, the water separator 300 according to the embodiments of the present invention may further include a status indicator light indicating whether each pump is operating/stopped and whether each valve is opened or closed. .

The foregoing are specific examples for carrying out the present invention. In addition to the above-described embodiments, the present invention will also include embodiments that can be simply or easily changed in design. In addition, the present invention will also include techniques that can be easily modified and practiced using the embodiments. Therefore, the scope of the present invention should not be limited to the above-described embodiments and should not be defined, and should be defined by those equivalent to the claims of this invention as well as the claims to be described later.

100: heating device
200: main pump
300: water separator
310: expansion tank
320: multi pump
1000: heat exchange system
IWL: Expansion water inlet pipe
OWL: reduced water discharge pipe
V1, V2, V3, V4, V5, V6, V7, V8, V9: valves
PS1, PS2: Pressure switch
LS: level sensor

Claims (4)

In the water separation device for removing dissolved oxygen in the heated water while circulating the water heated in the heating device inside the object,
An expansion tank in which a space for receiving water is formed;
an expansion water inlet pipe connecting the expansion tank and the object so that water can move;
a reduced water discharge pipe connecting the expansion tank and the heating device so that water can move;
a multi-pump applying force so that the water in the expansion tank is discharged through the reduced water discharge pipe;
a first valve opening and closing the expansion water inlet pipe;
Measure the pressure of the other end of the reduced water discharge pipe, send a signal to open the first valve to the first valve when the measured pressure is greater than or equal to the first pressure, and when the measured pressure is less than the first pressure, the first a first pressure switch for sending a valve closing signal to the first valve; and
The pressure at the other end of the reduced water discharge pipe is measured, and when the measured pressure is less than the second pressure, a signal for operating the multi-pump is sent to the multi-pump, and when the measured pressure exceeds the second pressure, the multi-pump A second pressure switch for sending a signal to stop the multi-pump; includes,
The second pressure is a pressure lower than the first pressure. According to claim 1,
The water separator further comprising a third valve including a check valve opened so that water in the reduced water discharge pipe flows only in a direction toward the heating device. According to claim 1,
a make-up water storage unit supplying make-up water into the expansion tank;
a make-up water inlet pipe connecting the make-up water storage unit and the expansion tank;
a fourth valve opening and closing the make-up water inlet pipe; and
The water level in the expansion tank is measured, a signal to open the fourth valve is sent to the fourth valve when the measured water level is lower than the first water level, and a signal to open the fourth valve when the measured water level is higher than the second water level. Separation device further comprising a level sensor for sending to the fourth valve. According to claim 1,
a dissolved oxygen exhaust passage communicating with the expansion tank;
a fifth valve opening and closing the dissolved oxygen outlet; and
and a sensor for measuring the amount of dissolved oxygen in the water in the expansion tank and sending a signal to the fifth valve to open the fifth valve when the measured amount of dissolved oxygen is greater than a set value.

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