KR102567614B1 - Apparatus for treating refrigerant the having the same, operation method of apparatus for treating refrigerant - Google Patents

Abstract

A refrigerant processing apparatus according to an embodiment of the present invention has a refrigerant circulation unit capable of circulating refrigerant, an internal space capable of accommodating refrigerant and air, a control tank connected to the refrigerant circulation unit, and the inside of the control tank according to the pressure of the refrigerant circulation unit. It may include a pressure control unit connected to the control tank to transfer the refrigerant of the refrigerant circulation unit to the control tank by adjusting the pressure of the control tank or transfer the refrigerant from the control tank to the refrigerant circulation unit.
Accordingly, according to embodiments of the present invention, the pressure of the refrigerant circulation unit can be adjusted to a predetermined pressure even if the volume of the refrigerant changes according to the temperature. Accordingly, it is possible to prevent malfunction or damage of the compressor provided in the refrigerant circulation unit when the pressure of the refrigerant circulation unit is too high or low.

Description

Refrigerant processing device and operating method of refrigerant processing device

The present invention relates to a refrigerant treatment device and a method of operating the refrigerant treatment device, and more particularly, to a refrigerant treatment device and a method of operating the refrigerant treatment device capable of preventing problems caused by pressure changes.

The cooling device is a device that cools the target device by supplying a cooling liquid to the target device. This cooling device includes a heat exchange unit that exchanges heat between the cooling liquid and the refrigerant, a refrigerant circulation unit that cools the gaseous refrigerant discharged from the heat exchange unit into a liquid state and supplies it to the heat exchange unit, and supplies the low-temperature cooling liquid discharged from the heat exchange unit to the target device. It includes a cooling liquid supply unit and a cooling liquid recovery unit for supplying the cooling liquid discharged from the target device back to the heat exchange unit.

And, the refrigerant circulation unit includes a compressor for compressing the gas phase refrigerant discharged from the heat exchange unit. The compressor can normally operate only when it is maintained within a certain pressure range, and may malfunction or be damaged if it is out of that range.

Meanwhile, the refrigerant circulation unit may be installed outdoors, and the volume of the refrigerant changes according to the temperature. That is, in the volume of the refrigerant inside the refrigerant circulation unit, the volume of the refrigerant is smaller in the winter season than in the summer season, and the volume of the refrigerant is larger in the summer season than in the winter season. Accordingly, the pressure inside the refrigerant circulating unit is lower than in the winter season than in the summer season, and higher in the summer season than in the winter season. In addition, the refrigerant is normally supplied to the refrigerant circulation unit once during the summer season, and the supplied refrigerant is used until the next summer season. However, when the refrigerant is supplied and used during the summer season, the pressure of the refrigerant circulation unit decreases for the same reason as described above when the winter season comes. Therefore, the pressure of the compressor decreases, and damage or malfunction may occur during operation.

In order to solve this problem, even if the refrigerant is supplied in the summer season, the refrigerant is additionally supplemented in the winter season to increase the pressure of the refrigerant circulation unit. That is, an operation of additionally supplying the refrigerant was performed separately. However, since the operation of the cooling device must be stopped for this, there is a problem in that the operating rate of the cooling device is lowered.

Korean Registered Patent No. 10-1262111

The present invention provides a refrigerant treatment device capable of preventing a problem from occurring due to a pressure change due to a refrigerant and a method of operating the refrigerant treatment device.

The present invention provides a refrigerant treatment device and a method of operating the refrigerant treatment device capable of preventing a problem from occurring due to a volume change of a refrigerant due to a temperature change.

The present invention provides a refrigerant treatment device and a method of operating the refrigerant treatment device capable of preventing a problem from occurring in a compressor due to a pressure change due to a volume change of a refrigerant.

A refrigerant treatment apparatus according to an embodiment of the present invention includes a refrigerant circulation unit capable of circulating a refrigerant; a control tank having an inner space in which refrigerant and air can be accommodated and connected to the refrigerant circulation unit; and adjusting the pressure inside the control tank according to the pressure of the refrigerant circulation unit so that the refrigerant of the refrigerant circulation unit is transferred to the control tank or the refrigerant in the control tank is transferred to the refrigerant circulation unit. It may include a; pressure control unit connected to.

The control tank may include a body having an inner space; and a diaphragm member having an internal space capable of accommodating a refrigerant, capable of expanding and contracting, and installed inside the body, wherein the diaphragm member is connected to the refrigerant circulation unit, and the pressure control unit includes the body. Of the inner space of the diaphragm member may be connected to the body to be in communication with the outer space.

The pressure regulator may include: a first pressure regulator connected to the body to discharge air inside the body when the pressure in the inner space of the body exceeds a first reference pressure; and a second pressure regulator connected to the body to supply air to the inner space of the body when the pressure of the refrigerant circulating unit is less than a second reference pressure lower than the first reference pressure.

The first pressure regulator may include: a first control pipe having one end connected to the body and having an outlet through which air is discharged at the other end; and a first valve connected between one end and the other end of the first control pipe to be opened when the pressure in the inner space of the body exceeds the first reference pressure and closed when the pressure is less than or equal to the first reference pressure. can include

The second pressure regulator may include a second control pipe having an inlet through which air may be introduced at one end and having the other end connected to the body; and a second valve connected between one end and the other end of the second control pipe to be opened when the pressure of the refrigerant circulation unit is less than the second reference pressure and closed when the pressure is greater than or equal to the second reference pressure. .

The refrigerant circulating unit may include a compressor capable of compressing the gas phase refrigerant discharged from the heat exchange unit; a compressor pipe connected between the heat exchange unit and the compressor; and a condenser connected to the compressor to condense and liquefy the refrigerant compressed and discharged from the compressor, and the pressure controller may be connected to the compressor pipe.

The refrigerant circulation unit includes a pressure sensor for measuring the pressure of the compressor pipe, and the second pressure regulator operates to supply air to the inner space of the body when the pressure measured by the pressure sensor is less than the second reference pressure. can do.

A method of operating a refrigerant processing apparatus for processing a refrigerant that exchanges heat with a cooling liquid supplied to a target device for cooling, comprising: circulating the refrigerant in a refrigerant circulation unit; and adjusting the pressure of the refrigerant circulation unit, wherein the process of adjusting the pressure of the refrigerant circulation unit discharges air from a control tank connected to the refrigerant circulation unit to the outside according to the pressure of the refrigerant circulation unit, thereby discharging the refrigerant to the outside. transferring the refrigerant of the circulation unit to the control tank; and supplying air to the control tank according to the pressure of the refrigerant circulation unit to transfer the refrigerant in the control tank to the refrigerant circulation unit.

The process of discharging air from the control tank to the outside may be performed when the pressure of the control tank exceeds the first reference pressure.

The process of transferring the refrigerant from the refrigerant circulation unit to the regulating tank includes a process of discharging air from the regulating tank to adjust the pressure of the regulating tank to a pressure that can accommodate the refrigerant. The refrigerant discharged from the refrigerant circulation unit may be supplied into the tank.

The step of measuring the pressure of the refrigerant circulation unit and supplying air to the control tank may be performed when the measured pressure of the refrigerant circulation unit is less than a second reference pressure lower than the first reference pressure. .

The target device may include a radar device that emits radar to perform at least one of detecting and tracking a target.

According to embodiments of the present invention, even if the volume of the refrigerant changes according to the temperature, the pressure of the refrigerant circulation unit can be adjusted to a predetermined pressure. Accordingly, it is possible to prevent malfunction or damage of the compressor provided in the refrigerant circulation unit when the pressure of the refrigerant circulation unit is too high or low.

In addition, the refrigerant in the refrigerant circulation unit may be automatically discharged or the refrigerant may be replenished to the refrigerant circulation unit according to the pressure of the refrigerant circulation unit. Thus, the pressure of the refrigerant circulation section is automatically adjusted. Accordingly, there is no need to separately perform an operation of discharging the refrigerant from the refrigerant circulation unit or replenishing the refrigerant for each season or whenever the temperature changes. Due to this, it is possible to reduce the time for stopping the operation of the refrigerant circulation unit and the cooling device including the refrigerant for discharging and replenishing the refrigerant, thereby improving the operation rate of the device.

1 is a conceptual diagram illustrating a cooling device according to an embodiment of the present invention.
2 is a conceptual diagram illustrating a pressure regulating device according to an embodiment of the present invention.
3 is a conceptual diagram illustrating a state in which air is discharged when a first valve is opened in a pressure regulator according to an embodiment of the present invention.
4 is a diagram illustrating the operation of a first valve according to an embodiment of the present invention.
5 is a conceptual diagram illustrating a state in which the second valve is opened and air is supplied to the control tank in the pressure control device according to an embodiment of the present invention.
6 is a diagram illustrating the operation of a third valve according to an embodiment of the present invention.
7 is a flowchart illustrating the operation of a refrigerant circulation unit and a pressure regulating device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments will complete the disclosure of the present invention, and will fully cover the scope of the invention to those skilled in the art. It is provided to inform you. In order to explain the embodiments of the present invention, the drawings may be exaggerated, and the same reference numerals in the drawings refer to the same components.

1 is a conceptual diagram illustrating a cooling device according to an embodiment of the present invention.

Referring to FIG. 1, the cooling device according to an embodiment of the present invention includes a heat exchange unit 100 for exchanging heat between a cooling liquid to be supplied to an object to be cooled (hereinafter, a target device 10) and a refrigerant to cool the cooling liquid, and a heat exchanger. The refrigerant circulation unit 200 lowers the temperature of the refrigerant while circulating the refrigerant discharged from the unit 100 and supplies it back to the heat exchange unit 100. The refrigerant circulation unit 200 adjusts the pressure of the refrigerant circulation unit 200. ) and a pressure regulating device 3000 connected to it.

In addition, the cooling device cools the cooling liquid supply unit 400 for supplying the cooling liquid cooled to a low temperature by heat exchange in the heat exchange unit 100 to the target device 10 and the cooling liquid discharged after cooling the target device 10 to recover the heat exchange unit It may include a cooling liquid recovery unit 500 that supplies back to (100).

Here, a configuration including a refrigerant circulation unit 200 and a pressure regulator 3000 connected to the refrigerant circulation unit 200 may be referred to as a 'refrigerant processing unit'. That is, the refrigerant treatment device may be described as including the refrigerant circulation unit 200 and the pressure control device 3000 .

The target device 10 to be cooled may be a radar device used for detecting or tracking a target. More specifically, there are radar devices used for military purposes. Of course, it is not limited thereto, and various devices requiring cooling may be applied to the target device.

The heat exchange unit 100 lowers the temperature of the cooling liquid by exchanging heat between the cooling liquid and the refrigerant. The heat exchange unit 100 may be, for example, a plate type heat exchange unit. That is, the heat exchange unit 100 may include a cooling liquid circulation plate through which cooling liquid circulates, and a refrigerant circulation plate provided in contact with the cooling liquid circulation plate through which refrigerant circulates. In this case, the cooling liquid circulation plate may be connected to the cooling liquid supply unit 400 and the cooling liquid recovery unit 500 .

Of course, the heat exchange unit 100 is not limited to the above-described plate-type heat exchange unit, and various means capable of exchanging heat between a cooling liquid and a refrigerant may be applied.

The cooling liquid supplied to the target device 10 to cool the target device 10 may be, for example, water or a mixture of water and ethylene glycol. Of course, the cooling liquid is not limited to the above examples, and various materials that can exchange heat with the refrigerant and do not cause damage when supplied to the target device may be used.

In addition, a refrigerant that lowers the temperature of the cooling liquid by exchanging heat with the cooling liquid may be, for example, R134a. Here, R134a is an ethane-based halogenated carbon compound, and may be a substance represented by the chemical formula CF ₃ CH ₂ F. Of course, the refrigerant is not limited to the above examples, and various materials capable of exchanging heat with the cooling liquid may be used.

The refrigerant circulation unit 200 has a compressor 230 that compresses the gaseous refrigerant discharged from the heat exchanger 100 through heat exchange with the cooling liquid, and condenses and liquefies the gaseous refrigerant compressed by the compressor 230 into a liquid refrigerant. It includes a condenser 250 that makes.

In addition, the refrigerant circulation unit 200 is a liquid separator 210 that is located between the heat exchange unit 100 and the compressor 230 and separates the liquid phase (ie, liquid) from the refrigerant in a gaseous state discharged from the heat exchange unit 100. , oil separator 240 for separating oil from gaseous refrigerant discharged from compressor 230, receiver 260 for storing high-pressure liquid refrigerant discharged from condenser 250, liquid refrigerant It may include a filter dryer 270 for adsorbing and removing moisture mixed in.

In addition, the refrigerant circulation unit 200 includes a pipe P1 connecting the heat exchange unit 100 and the liquid separator 210, a first pressure sensor 220 installed in the pipe P1 to measure pressure, and a liquid separator. Pipe (P2) connecting 210 and compressor 230, pipe (P3) connecting compressor 230 and oil separator 240, pipe (P4) connecting oil separator 240 and condenser 250 ), a pipe (P5) connecting the condenser 250 and the receiver 260, a pipe (P6) connecting the receiver 260 and the filter dryer 270, and a filter dryer on the other side of the receiver 260 ( 270) and connected pipe (P7), the second pressure sensor 280 installed in the pipe (7) to measure the pressure, installed to connect between the pipe (P7) and the heat exchange unit 100 to transfer the liquid refrigerant to the heat exchange unit It includes a pipe (P8) supplying to (100).

Hereinafter, the pipe P8 connecting between the pipe P7 and the heat exchange part 100 is used as the refrigerant supply pipe P8 so that the liquid refrigerant discharged from the filter dryer 270 can be supplied to the heat exchange part 100. name it In addition, hereinafter, for convenience of description, a pipe P2 connecting the liquid separator 210 and the compressor 230 or a pipe connected to the front end (or front end) of the compressor 230 is referred to as a 'compressor pipe P2'. name it

In addition, the refrigerant circulation unit 200 includes a valve 290b installed in the refrigerant supply pipe P8 to regulate communication with the heat exchange unit 100, and a refrigerant supply pipe ( P8) includes an expansion valve 290 that adiabatically expands the liquid refrigerant into a low-temperature and high-pressure state by a throttling action.

The first pressure sensor 220 is a means for measuring the pressure inside the pipe P1 before the gaseous refrigerant discharged from the heat exchanger 100 moves to the compressor 230 . The second pressure sensor 280 is a means for measuring the pressure inside the pipe P7 through which the refrigerant compressed to a high pressure by the compressor 230 passes. In other words, the first pressure sensor 220 is a means for measuring the pressure of the pipe connected to the front end of the compressor 230, and the second pressure sensor 280 is a means to measure the pressure of the pipe connected to the rear end of the compressor 230. am. Also, since the refrigerant is compressed in the compressor 230, the pressure of the pipe through which the compressed refrigerant passes may be higher than the pressure of the pipe through which the refrigerant passes before being compressed. Accordingly, the first pressure sensor 220 may be referred to as a low pressure sensor, and the second pressure sensor 280 may be referred to as a high pressure sensor.

Since the configurations of the refrigerant circulation unit 200 as described above are the same as those of the general refrigerant circulation unit, a detailed description thereof will be omitted.

The cooling liquid supply unit 400 is a means for supplying cooling liquid to the target device 10 in order to cool the target device 10 . The cooling liquid supply unit 400 includes a cooling liquid tank 410 for storing low-temperature cooling liquid discharged from heat exchange in the heat exchange unit 100, a cooling liquid discharge pipe 420 connecting the heat exchange unit 100 and the cooling liquid tank 410, and a heat exchanger. A valve 430 installed on the cooling liquid discharge pipe 420 to control communication between the unit 100 and the cooling liquid tank 410, a cooling liquid supply pipe connecting the target device 10 to be cooled and the cooling liquid tank 410 ( 440), the pump 450, the cooling liquid tank 410 and the pump 450 installed on the cooling liquid supply pipe 440 to provide pumping power for the cooling liquid in the cooling liquid tank 410 to move to the target device 10 It may include a valve 460 installed on the cooling liquid supply pipe 440 to be positioned between and a valve 470 installed on the cooling liquid supply pipe 440 to be positioned between the pump 450 and the target device 10. .

The cooling liquid recovery unit 500 recovers the cooling liquid discharged after circulating through the target device 10 and supplies it to the heat exchange unit 100 again. The cooling liquid recovery unit 500 may include a recovery pipe 510 connecting the target device 10 and the heat exchange unit 100 and a valve 520 installed on the recovery pipe 510 .

Each of the components of the cooling liquid supply unit 400 and the cooling liquid recovery unit 500 as described above are general components, and thus a detailed description thereof will be omitted.

Meanwhile, the cooling device may be installed outdoors to be exposed to the atmosphere, and the volume of the refrigerant may vary depending on the temperature. That is, the temperature of the refrigerant circulating in the refrigerant circulation unit 200 may change according to the external temperature, that is, air temperature or air temperature. As the temperature increases, the refrigerant expands in volume, and as the temperature decreases, the volume decreases. As a result, the volume occupied by the refrigerant inside the refrigerant circulation unit 200 may vary. That is, as the temperature increases, the volume occupied by the refrigerant within the refrigerant circulation unit 200 increases, and as the temperature decreases, the volume occupied by the refrigerant within the refrigerant circulation unit 200 decreases.

The volume occupied by the refrigerant inside the refrigerant circulation unit 200 may be the volume occupied by the refrigerant in the internal space of components of the refrigerant circulation unit 200 . For example, it may mean the volume occupied by the refrigerant inside the compressor pipe (P2).

In addition, the pressure of the refrigerant circulation unit 200 filled with or circulated by the refrigerant changes due to the change in the volume of the refrigerant according to the temperature. That is, as the volume occupied by the refrigerant inside the refrigerant circulation unit 200 increases, the pressure of the refrigerant circulation unit 200 increases, and as the volume occupied by the refrigerant inside the refrigerant circulation unit 200 decreases, the pressure of the refrigerant circulation unit 200 increases. The pressure is small. Here, the pressure of the refrigerant circulation unit 200 is the pressure in each of the components of the refrigerant circulation unit 200 . For example, it may be the pressure inside the compressor 230 or inside the compressor pipe P2.

As described above, the cooling device may be installed outdoors to be exposed to the atmosphere. Accordingly, the pressure inside the refrigerant circulation unit 200 may vary depending on the temperature of the outside of the installation place, that is, the air temperature. On the other hand, there is a large temperature difference between summer and winter among the four seasons. Therefore, in the pressure of the refrigerant circulation unit 200, the difference between the pressure in summer and the pressure in winter is large. That is, since the temperature is higher in the summer season than in the winter season, the volume of the refrigerant in the refrigerant circulation unit 200 is greater in the summer season than in the winter season. Accordingly, when the same amount of refrigerant is supplied to the refrigerant circulation unit 200, the pressure of the refrigerant circulation unit 200 is higher in summer than in winter. Conversely, since the temperature is lower in the winter season than in the summer season, the volume of the refrigerant in the refrigerant circulation unit 200 is smaller in the winter season than in the summer season. Accordingly, when the same amount of refrigerant is supplied to the refrigerant circulation unit 200, the pressure of the refrigerant circulation unit 200 is lower in winter than in summer.

Also, when the use time is prolonged, the amount of refrigerant in the refrigerant circulation unit 200 may become insufficient. Accordingly, the refrigerant is additionally supplied to the refrigerant circulating unit 200 at regular intervals, that is, replenished. For example, adding refrigerant to at least one of a compressor pipe (P2) connecting between the compressor 230 and the liquid separator 210 and a pipe (P7) connecting between the filter dryer 270 and the second pressure sensor 280 supply At this time, the refrigerant is generally additionally replenished during the summer season of the year. After using the refrigerant supplied in the summer season for a period of one year, the refrigerant is replenished in the summer season, which is the point at which one year has elapsed. As another example, the refrigerant may be additionally replenished during the winter season. In addition, the refrigerant supplied during the winter season is used for a period of one year, and then the refrigerant is replenished during the winter season, which is the point at which one year has elapsed.

Hereinafter, problems occurring when the refrigerant is replenished during the winter season and used until the winter season of the following year will be described.

The pressure inside the refrigerant circulating unit 200 increases when the refrigerant is supplied and used during the winter season and becomes the summer season. That is, the refrigerant is supplied during the winter season and used without replenishing the refrigerant until the summer season, and when the summer season occurs, the atmospheric temperature increases and the pressure inside the refrigerant circulation unit 200 increases. When this happens, the pressure in the compressor is too high and the compressor malfunctions or is damaged. For example, when the pressure inside the compressor pipe P2 connected to the compressor exceeds a predetermined pressure (hereinafter, a first reference pressure), the compressor 230 may malfunction or be damaged.

Therefore, in order to prevent such a problem from occurring, during the summer season, a portion of the refrigerant is discharged from the refrigerant circulation unit 200 to remove it. At this time, when the pressure measured by the first pressure sensor 220 installed in the pipe P1 connecting the heat exchanger 100 and the liquid separator 210 exceeds the first reference pressure, the operation of the cooling device is stopped. Stop it. The refrigerant is discharged from at least one of the compressor pipe (P2) and the pipe (P7) connecting the filter dryer 270 and the second pressure sensor 280.

As another example, a problem that occurs when the refrigerant is replenished during the summer season and used until the summer season of the following year will be described.

The pressure inside the refrigerant circulating unit 200 decreases when the refrigerant is supplied and used in the summer season and becomes the winter season. That is, the refrigerant is supplied in the summer season and used without replenishment of the refrigerant until the winter season, and then the atmospheric temperature is lowered and the pressure inside the refrigerant circulation unit 200 decreases in the winter season. When this happens, the pressure in the compressor is too low and the compressor malfunctions or is damaged. For example, when the pressure inside the compressor pipe (P2) connected to the compressor is less than the second reference pressure, which is a lower pressure value than the first reference pressure, the compressor 230 may malfunction or be damaged.

Therefore, in order to prevent such problems from occurring, refrigerant is additionally supplied to the refrigerant circulation unit 200 during the winter season. That is, the refrigerant used in the summer season cannot be used until the next summer season, and the refrigerant is replenished during the winter season, which is an intermediate point. At this time, the refrigerant may be supplied from at least one of the compressor pipe (P2) and the pipe (P7) connecting the filter dryer 270 and the second pressure sensor 280.

As such, the volume of the refrigerant varies depending on the season or temperature, and thus the pressure of the refrigerant circulation unit 200 changes. More specifically, the pressure of the compressor 230 is changed. In addition, since the compressor may malfunction or be damaged if the pressure exceeds the first standard pressure or is less than the second standard pressure, the refrigerant must be discharged and removed or additionally supplied according to the temperature change. For example, as described above, it is inconvenient to perform the operation of discharging and removing the refrigerant in summer and the operation of additionally supplying (supplementing) the refrigerant in winter every six months. In addition, since the operation of the cooling circulation unit must be stopped for the additional supply and discharge of the refrigerant, there is a problem in that the operation rate of the device is lowered.

Therefore, in the embodiment, a pressure control device 3000 capable of adjusting the pressure of the refrigerant circulation unit 200 is installed. That is, even if the volume of the refrigerant inside the refrigerant circulating unit 200 changes according to the temperature, the pressure of the refrigerant circulating unit 200 is the second standard pressure to the first standard pressure (from the second standard pressure to the first standard pressure or less). ) is connected to the refrigerant circulation unit 200. More specifically, even if the volume of the refrigerant inside the refrigerant circulating unit 200 changes according to the temperature, the pressure of the compressor 230 is the second reference pressure to the first reference pressure (the first reference pressure is greater than the second reference pressure). The pressure regulating device 3000 that enables the pressure to be lower than the reference pressure) is connected to the refrigerant circulation unit 200.

Here, the second reference pressure to the first reference pressure are pressures at which the compressor 230 is not malfunctioned or damaged and remains normal. Accordingly, the second reference pressure to the first reference pressure, which are pressures at which the compressor 230 maintains normal without malfunction or damage, may be referred to as 'normal pressure'.

2 is a conceptual diagram illustrating a pressure regulating device according to an embodiment of the present invention. 3 is a conceptual diagram illustrating a state in which air is discharged when a first valve is opened in a pressure regulator according to an embodiment of the present invention. 4 is a diagram illustrating the operation of a first valve according to an embodiment of the present invention. 5 is a conceptual diagram illustrating a state in which the second valve is opened and air is supplied to the control tank in the pressure control device according to an embodiment of the present invention. 6 is a diagram illustrating the operation of a third valve according to an embodiment of the present invention.

Referring to FIG. 2 , the pressure regulating device 3000 has an internal space capable of accommodating refrigerant and air, and has a control tank 3100 connected to the compressor pipe P2, and between the compressor pipe P2 and the control tank 3100. The pressure inside the control tank 3100 is adjusted according to the pressure of the connecting pipe 3200, the valve 3210 installed in the connecting pipe 3200, and the refrigerant circulating part 200, so that the refrigerant circulating part 200 A pressure controller connected to the control tank 3100 may be included to transfer the refrigerant to the control tank 3100 or transfer the refrigerant from the control tank 3100 to the refrigerant circulation unit 200. .

Here, the pressure control unit is configured to supply air to the first pressure regulator 3300 connected to the control tank 3100 and the control tank 3100 so that air inside the control tank 3100 can be discharged. A second pressure regulator 3400 connected to 3100 may be included.

The control tank 3100 may include a body 3110 having an inner space and a diaphragm member 3120 installed inside the body 3110 to have an inner space in which a refrigerant can be accommodated and expand and contract.

The body 3110 may have a tubular shape having an inner space. The body 3110 may be disposed between the first and second pressure regulators 3300 and 3400 and the connection pipe 3200.

The connection pipe 3200 is installed between the compressor pipe P2 and the body 3110 of the control tank 3100. At this time, one end of the connection pipe 3200 may be connected to the compressor pipe P2 and the other end may be connected to the diaphragm member 3120 installed inside the body 3110. In addition, a valve 3210 capable of adjusting communication with the compressor pipe P2 may be installed in the connecting pipe 3200 .

The diaphragm member 3120 is installed inside the body 3110, and is installed so that the inner space is connected to the connecting pipe 3200. And the diaphragm member 3120 is provided to enable expansion and contraction. That is, when refrigerant is supplied to the inside through the connection pipe 3200, the diaphragm member 3120 may be expanded by the supplied refrigerant. Also, the diaphragm member 3120 may contract when the refrigerant inside is discharged to the outside.

The diaphragm member 3120 is installed inside the body 3110, and the inner space of the diaphragm member 3120 is separated from the outer space. That is, the outer space of the diaphragm member 3120 of the inner space of the body 3110 is a space in which air is accommodated. Accordingly, in the inner space of the regulating tank 33100, the inner space of the diaphragm member 3120 may be referred to as 'refrigerant space', and the outer space of the diaphragm member 3120 may be referred to as 'air space (S _a )'. there is.

When the diaphragm member 3120 expands and contracts inside the body 3110, the volume of the air space _Sa , which is an outer space of the diaphragm member 3120, decreases and increases. In addition, the pressure of the air space (S _a ) increases and decreases according to the volume change of the air space (S _a ). For example, when refrigerant is supplied and the diaphragm member 3120 expands, the pressure in the outer space of the diaphragm member 3120, that is, in the air space S _a increases. Conversely, when the refrigerant inside the diaphragm member 3120 is discharged toward the connection pipe 3200, the diaphragm member 3120 contracts, and thus the pressure in the air space S _a decreases.

When the pressure of the refrigerant circulation unit 200 is high, the refrigerant of the refrigerant circulation unit 200 is supplied to the diaphragm member 3120 through the connection pipe 3200. That is, when the temperature rises and the volume of the refrigerant expands, a part of the refrigerant in the refrigerant circulation unit 200 is transported to the diaphragm member 3120 via the connecting pipe 3200. More specifically, the refrigerant in the compressor pipe (P2) is pushed through the connection pipe (3200) and transferred to the diaphragm member (3120) of the control tank (3100). This may be due to a pressure difference between the refrigerant circulation unit 200 and the control tank 3100 . As such, the fact that the refrigerant in the refrigerant circulation unit 200 is transferred to the diaphragm member 3120 of the control tank 3100 means that the amount of refrigerant in the refrigerant circulation unit 200 is reduced. Accordingly, the volume decreases by the amount of the refrigerant escaped from the refrigerant circulation unit 200, and thus the pressure of the refrigerant circulation unit 200 decreases. That is, the pressure of the compressor pipe (P2) and the compressor 230 is reduced.

And, when the refrigerant is supplied to the diaphragm member 3120, the diaphragm member 3120 expands, and expands more as the amount of refrigerant supplied increases. At this time, the inner space of the body 3110 is filled with air. Accordingly, as the diaphragm member 3120 expands, the pressure of the outer space of the diaphragm member 3120, that is, the air space S _a increases.

However, since the inside of the body 3110 is filled with air, there may be limitations in expanding the diaphragm member 3120 inside the body 3110. Accordingly, in order to sufficiently move the refrigerant of the refrigerant circulation unit 200 having an increased pressure into the diaphragm member 3120, the diaphragm member 3120 must be sufficiently expanded. To this end, the air inside the body 3110 is discharged using the first pressure regulator 3300 to be described later. That is, the first pressure regulator 3300 is installed to communicate with the air space (S _a ) of the body 3110, and when the pressure of the body 3110 exceeds a predetermined pressure, the first pressure regulator 3300 is opened to the outside. expel the air with Accordingly, the pressure of the air space (S _a ) inside the body 3110 is reduced, and thus the diaphragm member 3120 can be further expanded.

The standard pressure at which the first pressure regulator 3300 is opened to discharge air may be the first standard pressure. That is, when the pressure inside the body 3110 exceeds the first reference pressure, the first pressure regulator 3300 is opened to discharge air.

More specifically, even if the pressure of the refrigerant circulation unit 200 increases and the refrigerant is transported to the diaphragm member 3120 of the control tank 3100 and expands, when the pressure of the body 3110 is equal to or less than the first reference pressure, 1 The pressure regulator 3300 remains closed. This is because the compressor 230 is not damaged or malfunctions when the pressure of the refrigerant circulation unit 200 is equal to or less than the first reference pressure. However, when the refrigerant in the refrigerant circulation unit 200 further escapes to the diaphragm member 3120 and the pressure of the body 3110 exceeds the first reference pressure, the first pressure regulator 3300 is opened. This is because the compressor may be damaged or malfunction when the pressure of the refrigerant circulation unit 200 exceeds the first reference pressure. When the first pressure regulator 3300 is opened and air is discharged from the body 3110, the pressure inside the body 3110 decreases. As a result, the refrigerant of the refrigerant circulation unit 200 may be further supplied to the diaphragm member 3120 . And as the refrigerant in the refrigerant circulation unit 200 is further discharged to the diaphragm member 3120, the pressure of the refrigerant circulation unit 200 decreases.

In addition, when the refrigerant in the refrigerant circulation unit 200 sufficiently escapes through the diaphragm member 3120, the amount of refrigerant flowing out of the refrigerant circulation unit 200 through the diaphragm member 3120 may decrease or may not escape. For example, when the pressure of the compressor pipe (P2) is lower than the first reference pressure, the amount of refrigerant escaping through the diaphragm member 3120 may decrease or may not escape. Accordingly, the pressure of the air space (S _a ) of the body 3110 may drop below the first reference pressure. At this time, the first pressure regulator 3300 connected to the air space S _a is closed to stop air discharge.

The first pressure regulator 3300 discharges air inside the control tank 3100 when the pressure of the control tank 3100 is high. The first pressure regulator 3300 may include a first control pipe 3310 connected to the air space S _a of the control tank 3100 and a first valve 3320 installed in the first control pipe 3310. there is.

The first control pipe 3310 may be installed such that one end is connected to the control tank 3100 and the other end is exposed to the outside, for example, the atmosphere. Accordingly, when the first valve 3320 is opened, air in the control tank 3100 may be discharged to the outside through the other end of the first control pipe 3310. More specifically, the first control pipe 3310 is located on the opposite side of the first discharge pipe 3311 and the first discharge pipe 3311, one end of which is connected to the control tank 3100 and the other end of which is connected to the first valve 3320. A second discharge pipe 3312 connected to the first valve 3320 and having the other end exposed to the atmosphere may be included. That is, the first discharge pipe 3311 and the second discharge pipe 3312 are disposed with the first valve 3320 interposed therebetween. Accordingly, when the first valve 3320 is opened, the air that has moved from the control tank 3100 to the first discharge pipe 3311 may move to the second discharge pipe 3312 and be discharged to the outside.

When the first discharge pipe 3311 and the second discharge pipe 3312 are disposed with the first valve 3320 therebetween, their positions are connected differently, as shown in FIGS. 3 and 4 . That is, the first valve 3320 to be described later includes a movable first opening/closing member 3322, the first discharge pipe 3311 and the second discharge pipe 3312 based on the direction in which the first opening/closing member 3322 moves. ) is installed differently. For example, when the first opening/closing member 3322 moves in the vertical direction, the first discharge pipe 3311 and the second discharge pipe 3312 are connected to the first valve 3320 so that their heights are different in the vertical direction. . In this case, the first discharge pipe 3311 may be connected to the first valve 3320 so as to be positioned below the second discharge pipe 3312.

The opening and closing of the first valve 3320 is controlled according to the pressure of the control tank 3100 . More specifically, the first valve 3320 is opened or closed according to the pressure of the air space (S _a ) of the control tank 3100 . More specifically, since the air space (S _a ) of the control tank 3100 and the first valve 3320 are disposed with the first discharge pipe 3311 interposed therebetween, the first valve 3320 is the first discharge pipe ( 3311) opens or closes according to the pressure.

As shown in FIG. 4, the first valve 3320 has a first body 3321 having an internal space communicating with the first discharge pipe 3311 and the second discharge pipe 3312 and the pressure of the first body 3321. A first opening/closing member 3322 that moves inside the first body 3321 and controls communication between the first discharge pipe 3311 and the second discharge pipe 3312 is included. In addition, the first valve 3320 may adjust the movement degree or distance of the first opening/closing member 3322 according to the pressure of the first body 3321, and the first opening/closing member 3322 may be supported by the first opening/closing member 3322. An adjusting member 3323 may be included.

The first opening/closing member 3322 is installed inside the first body 3321 so as to move in the direction in which the first discharge pipe 3311 and the second discharge pipe 3312 are aligned. The first opening and closing member 3322 is arranged in the direction in which the first discharge pipe 3311 and the second discharge pipe 3312 are arranged, and the first and second sheets 3322-1 and 3322-2 spaced apart from each other, the first A connecting member 3322-3 connecting the first sheet 3322-1 and the second sheet 3322-2 so that a gap between the sheet 3322-1 and the second sheet 3322-2 is maintained. can include Here, at least one of the first and second sheets 3322-1 and 3322-2 may be a diaphragm.

Hereinafter, in the first opening/closing member 3322, one end will be referred to as one end and the other end will be referred to as the other end based on the moving direction. In addition, when the first opening and closing member 3322 moves in the vertical direction as described above, one end of the first opening and closing member 3322 may be a lower end and the other end may be an upper end. In addition, since the first sheet 3322-1 is located on the lower side and the second sheet 3322-2 is located on the upper side of the first opening and closing member 3322, one end or lower end of the first opening and closing member 3322 is the first sheet 3322-1. It may mean the sheet 3322-1, and the other end or upper end of the first opening/closing member 3322 may mean the second sheet 3322-2.

Hereinafter, in describing the operation of the first opening and closing member 3322, the first discharge pipe 3311 and the second discharge pipe 3312 are located at different heights in the vertical direction, and the first opening and closing member 3322 moves in the vertical direction. As an example, it will be described as moving (ie, going up and down).

Referring to (a) of FIG. 4 , the first opening/closing member 3322 is supported by the first adjusting member 3323, and the lower end thereof is supported so as to be positioned above the first discharge pipe 3311. That is, the first adjusting member 3323 supports the first opening/closing member 3322 so that an empty space in which air can be accommodated is provided below the first opening/closing member 3322 . Accordingly, the first opening/closing member 3322 may move in a direction away from the first discharge pipe 3311, that is, rise, according to the air supplied to the lower side thereof. Also, as the amount of air supplied to the lower side of the first opening/closing member 3322 increases, the first opening/closing member 3322 rises farther and farther from the first discharge pipe 3311.

At this time, according to the position of the first opening and closing member 3322 inside the first body 3321, the first discharge pipe 3311 and the second discharge pipe 3312 are closed without communicating with each other (Fig. 4 (a)) , communicate with each other (Fig. 4 (b)). That is, when the first opening/closing member 3322 is positioned between the first discharge pipe 3311 and the second discharge pipe 3312 as shown in (a) of FIG. 4, the first discharge pipe 3311 and the second discharge pipe 3312 ) are closed without communicating with each other. That is, the first valve 3320 is closed. Here, the fact that the first opening/closing member 3322 is positioned between the first discharge pipe 3311 and the second discharge pipe 3312 means that at least a part of the configuration of the first opening/closing member 3322 is connected to the first discharge pipe 3311 and the second discharge pipe 3311. It means being located in the space between the 2 discharge pipes 3312. For example, as shown in (a) of FIG. 4, the first sheet 3322-1 of the configuration of the first opening/closing member 3322 may be positioned between the first discharge pipe 3311 and the second discharge pipe 3312. there is. In this case, the first discharge pipe 3311 and the second discharge pipe 3312 do not communicate with each other and are closed by the first sheet 3322-1.

And, when the first opening and closing member 3322 is not located between the first discharge pipe 3311 and the second discharge pipe 3312 as shown in (b) of FIG. 4, the first discharge pipe 3311 and the second discharge pipe ( 3312) are in communication with each other, that is, open. That is, the first valve 3320 is opened. Here, the fact that the first opening/closing member 3322 is not located between the first discharge pipe 3311 and the second discharge pipe 3312 means that all configurations of the first opening/closing member 3322 are the first discharge pipe 3311 and the second discharge pipe 3311. This means that it is not located between the discharge tubes 3312. For example, as shown in (b) of FIG. 4, the first sheet 3322-1, the connecting member 3322-3, and the second sheet 3322-2 of the first opening and closing member 3322 are all connected to the second discharge pipe ( 3312) may be located on the upper side.

As described above, the first valve 3320 is opened and closed according to the amount of air supplied into the first valve 3320. This can be explained as opening and closing of the first valve 3320 is controlled according to the pressure inside the first body 3321 . The first valve 3320 according to the embodiment maintains a closed state when its internal pressure is less than or equal to the first reference pressure, and operates to open when it exceeds the first reference pressure. In this way, the operation of opening and closing the first valve 3320 based on the first reference pressure can be controlled through a first adjusting member 3323 described later.

The first adjusting member 3323 connects the fixing member 3323-1 fixedly installed to the first body 3321 and the other end, that is, the upper end of the fixing member 3323-1 and the first opening/closing member 3322. It may include a support member (3323-2) to. Here, the support member 3323-2 may be, for example, a spring, and the fixing member 3323-1 may be a bolt having a thread formed on an outer surface thereof.

The fixing member 3323-1 is installed to pass through a part of the first body 3321. At this time, the first body 3321 through which the fixing member 3323-1 passes has a screw thread of the fixing member 3323-1 and A screw thread that can be meshed with may be provided. Accordingly, a part of the fixing member 3323-1 may be inserted into the first body 3321. And since the support member 3323-2 is connected to the fixing member 3323-1 inserted into the first body 3321, the length of the fixing member 3323-1 inserted into the first body 3321 Accordingly, the length of the support member 3323-2 may be adjusted.

When the first adjusting member 3323 supports the first opening/closing member 3322, when no force is applied to the first opening/closing member 3322, the first opening/closing member 3322 is connected to the first discharge pipe 3311. It is supported so that it can be located between the second discharge pipe 3312. For example, when no force is applied to the first opening/closing member 3322, the first sheet 3323-1 of the first opening/closing member 3322 connects the first discharge pipe 3311 and the second discharge pipe 3312. The first adjusting member 3323 should support the first opening/closing member 3322 so as to be positioned between them.

This can be adjusted by adjusting the tension of the support member 3323-2 using the fixing member 3323-1. That is, the tension of the support member 3323-2 can be adjusted by rotating the fixing member 3323-1 to adjust the length of the fixing member 3323-1 inserted into the first body 3321. For example, as the length of the fixing member 3323-1 inserted into the first body 3321 is shortened, the tension of the support member 3323-2 may be increased. Conversely, as the length of the fixing member 3323-1 inserted into the first body 3321 increases, the tension of the support member 3323-2 can be reduced.

Here, the time when no force is applied to the first opening/closing member 3322 may be when air is not supplied to the lower side of the first opening/closing member 3322 or when the supply amount is small.

Also, the height of the first opening/closing member 3322 connected to the supporting member 3323-2 may be adjusted according to the tension of the supporting member 3323-2. That is, when the force is not applied to the first opening and closing member 3322, the higher the tension of the support member 3323-2 is, the higher the height of the first opening and closing member 3322 is and the higher the tension of the support member 3323-2 is. The lower the height of the first opening and closing member 3322 is, the lower it is.

In addition, the degree of movement of the first opening/closing member 3322 may be adjusted according to the tension of the supporting member 3323-2. That is, the first opening/closing member 3322 rises upward by the air supplied to the lower side. When the same amount of air is supplied to the lower side of the first opening/closing member 3322, the tension of the support member 3323-2 The larger this is, the shorter the distance the first opening/closing member 3322 moves upward. Conversely, as the tension of the support member 3323-2 decreases, the distance at which the first opening/closing member 3322 moves upward increases.

In addition, by adjusting the tension of the support member 3323-2 in this way, the first opening and closing member 3322 communicates (opens) the first discharge pipe 3311 and the second discharge pipe 3312. The pressure of the first body 3321 and the pressure of the closing first body 3321 can be adjusted. In other words, the first opening/closing member 3322 may be operated to communicate (open) between the first discharge pipe 3311 and the second discharge pipe 3312 at a predetermined pressure, or may be operated to close the first discharge pipe 3311 and the second discharge pipe 3312 . That is, by adjusting the tension of the support member 3323-2, when the pressure of the first body 3321 exceeds the first reference pressure, the first opening/closing member 3322 opens the first discharge pipe 3311 and the second discharge pipe. 3312 is operated to communicate (open), and when the pressure of the first body 3321 is equal to or less than the first reference pressure, the first opening/closing member 3322 operates between the first discharge pipe 3311 and the second discharge pipe 3312. can be operatively adjusted to close the

Hereinafter, operations of the refrigerant circulation unit and the pressure regulating device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4 .

First, a case in which the refrigerant is continuously used in the winter season and then becomes the summer season will be described as an example.

In the summer season, the temperature rises and the volume of the refrigerant increases compared to the winter season. That is, in the volume occupied by the refrigerant inside the refrigerant circulation unit 200, the volume of the refrigerant increases during the summer season. Accordingly, the volume occupied by the refrigerant in the refrigerant circulation unit 200 increases. As a result, the pressure in the refrigerant circulation unit increases.

When the pressure in the refrigerant circulation unit 200 increases, the refrigerant in the refrigerant circulation unit 200 may be transferred to the diaphragm member 3120 of the control tank 3100 through the connection pipe 3200 . Accordingly, the diaphragm member 3120 expands, and expands more as the amount of refrigerant supplied increases. When the diaphragm member 3120 expands in this way, the pressure in the air space S _a of the body 3110 increases. And since the air space (S _a ) of the body 3110 communicates with the first discharge pipe 3311 and the first valve 3320 of the first pressure regulator 3300, the air space (S _a ) of the body 3110 ) increases, the pressure of the first discharge pipe 3311 and the first valve 3320 increases. At this time, when the pressure of the first valve 3320 exceeds the first reference pressure, the first valve 3320 is opened as shown in (b) of FIG. 4 . Accordingly, air is discharged through the second discharge pipe 3312.

As such, when the pressure of the refrigerant circulation unit 200 increases and the refrigerant escapes to the control tank 3100, the pressure of the refrigerant circulation unit 200 may decrease. When the refrigerant is discharged from the refrigerant circulation unit 200 and supplied to the control tank 3100, the pressure of the control tank 3100 increases. At this time, when the pressure of the control tank 3100 exceeds the first reference pressure, the first valve Port 3320 is opened to discharge air inside the control tank 3100.

As a result, the pressure inside the control tank 3100 is instantly reduced, and thus the refrigerant in the refrigerant circulation unit 200 may further escape to the diaphragm member 3120 . That is, when the pressure of the control tank 3100 exceeds the first reference pressure, it may be difficult to supply the refrigerant into the control tank 3100 any longer. However, when the pressure of the control tank 3100 exceeds the first reference pressure, the first valve 3320 is opened to discharge air, and thus the pressure of the control tank 3100 may decrease. Accordingly, the refrigerant of the refrigerant circulation unit 200 may be further supplied into the control tank 3100 .

Also, when the pressure of the first valve 3320 is equal to or less than the first reference pressure, the first valve 3320 is closed. When the pressure of the first valve 3320 is equal to or less than the first reference pressure, the pressure of the refrigerant circulation unit 200 may be equal to or less than the first reference pressure. This is done by using the first adjusting member 3323 of the first valve 3320, the first body 3321 when the pressure of the refrigerant circulation unit 200, more specifically, the compressor pipe P2 is equal to or less than the first reference pressure. This is because the pressure of is adjusted or set so that the first opening/closing member 3322 closes when the pressure is less than or equal to the first reference pressure.

As such, the opening and closing of the first valve 3320 is controlled based on the first reference pressure, and is opened when the pressure inside the first valve 3320 exceeds the first reference pressure. And, that the pressure of the first valve 3320 exceeds the first reference pressure means that the pressure of the refrigerant circulation unit 200, that is, the compressor pipe P2 exceeds the first reference pressure. Therefore, the first valve 3320 of the first pressure regulator 3300 according to the embodiment is opened when the pressure of the refrigerant circulation unit 200 exceeds the first reference pressure, and is closed when the pressure is less than or equal to the first reference pressure. can be explained

As such, when the first valve 3320 is opened, the second valve 3420 of the second pressure regulator 3400 is not opened or closed by the air discharged from the control tank 3100 . i.e. not open. This is because the second valve 3420 operates opposite to the first valve 3320 and is controlled. The second valve 3420 will be described again later.

Hereinafter, the second pressure regulator will be described with reference to FIGS. 2, 5 and 6.

The second pressure regulator 3400 supplies air into the control tank 3100 when the pressure of the refrigerant circulation unit 200 is low, and pushes the refrigerant in the control tank 3100 into the refrigerant circulation unit 200. Increase the pressure in the refrigerant circuit. The second pressure regulator 3400 is opened and closed according to the pressure measured in the second control pipe 3410 connected to the air space S _a of the control tank 3100 and the refrigerant circulation unit 200. The second control pipe ( 3410) includes a second valve 3420 installed.

In addition, the second pressure regulator 3400 includes a pressurizer 3450 connected to the second control pipe 3410 and a third valve installed on the second control pipe 3410 to be located between the control tank 3100 and the pressurizer 3450 3430) may be further included.

The second control pipe 3410 includes the first supply pipe 3411, the third valve 3430, and the second supply pipe 3412 connecting the first supply pipe 3411, the control tank 3100, and the third valve 3430. ) may include a third supply pipe 3413 connecting between them. Here, the second supply pipe 3412 may be installed so that both ends are connected to the pressurizer 3450 and the third valve 3430. In addition, the second supply pipe 3412 may be connected to be located between the pressurizer 3450 and the third valve 3430.

The first supply pipe 3411 is a pipe for introducing air, and one end thereof may be connected to a tank storing air and the other end may be connected to the second supply pipe. Of course, the first supply pipe may be provided such that one end thereof is exposed to the atmosphere.

The second valve 3420 is installed in the first supply pipe 3411 and opens and closes according to the pressure of the refrigerant circulation unit 200 . That is, the second valve 3420 is opened when the pressure measured by the first pressure sensor 220 of the refrigerant circulation unit 200 is less than the second reference pressure, and is closed when the pressure is greater than or equal to the second reference pressure. That is, the second valve 3420 is automatically opened and closed in conjunction with the first pressure sensor 220 .

A filter 3460 capable of filtering out particles may be installed in the first supply pipe 3411 . At this time, the filter 3460 is preferably installed in the first supply pipe 3411 to be positioned between the second valve 3420 and the second supply pipe 3412.

When the second valve 3420 is opened, air is transferred to the second supply pipe 3412. Then, the air should be transferred to the air space (S _a ) of the control tank 3100 by transferring the air to the third supply pipe 3413 . The pressurizer 3450 is connected to the second supply pipe 3412 to more effectively transfer the air.

The pressurizer 3450 serves to push air. That is, when the pressurizer 3450 operates, the air transferred to the second supply pipe 3412 moves to the third valve 3430 and the third supply pipe 3413 and then to the air space S _a of the control tank 3100. are supplied Here, the pressurizer 3450 may be a means including a compressor.

When air is supplied to the air space (S _a ) of the control tank 3100, the pressure in the air space (S _a ) rises. Accordingly, the diaphragm member 3120 is pressurized, and as a result, the refrigerant filled in the diaphragm member 3120 is pushed toward the connection pipe 3200. Thus, the refrigerant is supplied or supplemented to the compressor pipe (P2) connected to the connecting pipe (3200). Accordingly, the pressure of the compressor pipe (P2) increases, and accordingly, the pressure of the entire refrigerant circulation unit 200 may increase.

At this time, the second valve 3420 maintains an open state until the pressure measured by the first pressure sensor 220 becomes equal to or greater than the second reference pressure. That is, the second pressure regulator 3400 continues to supply air to the regulating tank 3100 to increase the pressure until the pressure measured by the first pressure sensor 220 exceeds the second reference pressure. Accordingly, the refrigerant in the control tank 3100 is transferred to the compressor pipe P2 until the pressure measured by the first pressure sensor 220 becomes equal to or higher than the second reference pressure. And, when the pressure measured by the first pressure sensor 220 is equal to or less than the second reference pressure, the second valve 3420 is closed.

The third valve 3430 may have a configuration similar to or identical to that of the first valve 3320 of the first pressure regulator 3300 . However, the third valve 3430 is opened and closed by air flowing in from the first and second supply pipes 3411 and 3412, and is opened and closed by air discharged from the air space S _a of the control tank 3100. It is arranged so that it does not operate.

Referring to FIG. 6, the third valve 3430 is a second body 3431 having an internal space communicating with the second supply pipe 3412 and the third supply pipe 3413 and the pressure of the second body 3431. and a second opening/closing member 3432 that moves inside the second body 3431 and controls communication between the second supply pipe 3412 and the third supply pipe 3413. In addition, the second pressure regulator 3400 may adjust the degree or distance of movement of the second opening/closing member 3432 according to the pressure of the second body 3431, and may control the movement of the second opening/closing member 3432. 2 may include an adjusting member (3433).

The second opening/closing member 3432 is installed inside the second body 3431 so as to move in the direction in which the second supply pipe 3412 and the third supply pipe 3413 are aligned. The second opening/closing member 3432 is arranged in the direction in which the second supply pipe 3412 and the third supply pipe 3413 are arranged, and the first and second sheets 3422-1 and 3422-2 spaced apart from each other, the first A connecting member 3432-3 connecting the first sheet 3432-1 and the second sheet 3432-2 so that a gap between the sheet 3432-1 and the second sheet 3432-2 is maintained. can include Here, at least one of the first and second sheets 3422-1 and 3422-2 may be a diaphragm.

The second adjusting member 3433 connects the fixing member 3433-1 fixedly installed to the second body 3431 and the other end, that is, the upper end, of the fixing member 3433-1 and the second opening/closing member 3432. It may include a support member (3433-2) to do. Here, the support member 3433-2 may be, for example, a spring, and the fixing member 3433-1 may be a bolt having a thread formed on an outer surface thereof.

The second valve 3420 is provided so as to be opened when the pressure therein exceeds a predetermined pressure. This can be adjusted by adjusting the tension of the support member 3433-2 by adjusting the length through which the fixing member 3433-1 of the second adjusting member 3433 is inserted into the second body 3431.

Hereinafter, the operation of the second pressure regulator 3400 will be described with reference to FIGS. 5 and 6 . In this case, a case in which the refrigerant is injected and continuously used in the summer season and then becomes the winter season will be described as an example.

In the winter season, the temperature decreases and the volume of the refrigerant decreases compared to the summer season. That is, in the volume occupied by the refrigerant inside the refrigerant circulation unit 200, the volume of the refrigerant decreases during the winter season. Accordingly, the volume of the refrigerant inside the compressor pipe (P2) of the refrigerant circulation unit 200 is reduced. Accordingly, the pressure of the refrigerant circulation unit 200 decreases, and accordingly, the pressure measured by the first pressure sensor 220 decreases.

At this time, when the pressure measured by the first pressure sensor 220 is less than the second reference pressure, the second valve 3420 of the second pressure regulator 3400 is automatically opened. Accordingly, air introduced into the first supply pipe 3411 passes through the second valve 3420 and is transferred to the second supply pipe 3412 . The air transported through the second supply pipe 3412 is pushed toward the third valve 3430 by the operation of the pressurizer 3450. At this time, the pressure of the second supply pipe 3412 is adjusted so that the third valve 3430 can be opened, which can be performed by adjusting the operation of the pressurizer. When the third valve 3430 is opened, the air of the second supply pipe 3412 passes through the third valve 3430 and the third supply pipe 3413 and then is supplied to the air space S _a of the control tank.

Accordingly, the pressure in the air space (S _a ) increases, and accordingly, the diaphragm member 3120 is pressurized. Accordingly, the refrigerant in the diaphragm member 3120 is discharged to the connection pipe 3200 and then supplied to the compressor pipe P2. Accordingly, the pressure of the compressor pipe (P2) and the pressure of the compressor (230) rises.

The second valve 3420 maintains the open state until the pressure measured by the first pressure sensor 220, that is, the pressure of the first compressor pipe P2 reaches the second reference pressure, so that the refrigerant circulation unit 200 ), the refrigerant is continuously supplied, that is, replenished. And, when the pressure measured by the first pressure sensor 220, that is, the pressure of the compressor pipe P2, is equal to or less than the second reference pressure, the second valve 3420 is closed.

As such, the second valve 3420 of the second pressure regulator 3400 according to the embodiment is opened when the pressure of the refrigerant circulation unit is less than the second reference pressure, and is closed again when the pressure exceeds the second reference pressure. Accordingly, the pressure of the refrigerant circulating unit 200 may be adjusted to the second reference pressure or higher by the operation of the second pressure regulator 3400 .

7 is a flowchart illustrating the operation of a refrigerant circulation unit and a pressure regulating device according to an embodiment of the present invention.

Hereinafter, an operation of a cooling device according to an embodiment of the present invention will be described with reference to FIGS. 1 and 3 to 7 .

When the refrigerant and the cooling liquid are heat-exchanged in the heat exchange unit 100 , the low-temperature cooling liquid is supplied to the target device 10 through the cooling liquid supply unit 400 . In addition, the cooling liquid supplied and circulated to the target device 10 is discharged from the target device 10 and then returned to the heat exchange unit 100 through the cooling liquid recovery unit 500 .

In addition, the refrigerant obtained by heat-exchanging the cooling liquid in the heat exchange unit 100 is discharged from the heat exchange unit 100 and supplied to the refrigerant circulation unit 200 . And the refrigerant becomes low temperature again while circulating through the refrigerant circulation unit 200 (S10). More specifically, the gas phase refrigerant discharged from the heat exchanger 100 is supplied to the compressor 230 through the compressor pipe P2. Then, it is compressed to a high pressure in the compressor 230. The gaseous refrigerant compressed in the compressor 230 is supplied to the condenser 250 through the oil separator 240, and the gaseous refrigerant is condensed in the condenser 250 and converted into a liquid refrigerant. The liquid refrigerant is supplied back to the heat exchange unit 100 through the receiver 260, the filter dryer 270, and the expansion filter 290.

While the refrigerant circulates through the refrigerant circulation unit 200, the pressure regulator 3000 operates according to the pressure of the refrigerant circulation unit 200. A more detailed description of this is as follows.

When the outdoor temperature in which the cooling device is installed, that is, the temperature increases, the pressure of the refrigerant circulation unit 200 increases. For example, the pressure of the refrigerant circulating unit 200 may be increased when the refrigerant supplied during the winter season is used and during the summer season (S21). In this case, the refrigerant of the refrigerant circulation unit 200 is supplied to the diaphragm member 3120 of the control tank 3100 (S22). Accordingly, the diaphragm member 3120 expands, and the pressure of the control tank 3100 increases. That is, the pressure of the air space (S _a ), which is the outer space of the diaphragm member 3120, inside the control tank 3100 increases. At this time, as the amount of refrigerant discharged from the refrigerant circulation unit 200 and supplied to the diaphragm member 3120 increases, the size of expansion of the diaphragm member 3120 increases. And, as the size of the diaphragm member 3120 increases, the pressure in the air space S _a increases.

At this time, the first valve 3320 is maintained in a closed state or opened according to whether the pressure in the air space (S _a ) exceeds the first reference pressure (S23). For example, when the pressure of the air space (S _a ) and the first valve 3320 is less than or equal to the first reference pressure, the first valve 3320 is maintained in a closed state (Yes). This means that the pressure of the refrigerant circulation unit 200, that is, the compressor 230 and the compressor pipe P2 is less than or equal to the first reference pressure. However, when the pressure of the air space (S _a ) and the first valve 3320 exceeds the first reference pressure (No), the first valve 3320 is opened (S24). At this time, rather than directly measuring the pressure of the air space (S _a ), the first valve 3320 communicating with the air space (S _a ) is provided to open when the pressure exceeds the first reference pressure.

When the first valve 3320 is opened, air in the control tank 3100 is discharged (S25). That is, the air in the air space (S _a ) of the control tank 3100 passes through the first discharge pipe 3311 , the first valve 3320 and the second discharge pipe 3312 and is discharged to the outside. Accordingly, the pressure in the air space (S _a ) is reduced. That is, the pressure of the air space (S _a ), which is the outer space of the diaphragm member 3120, inside the body 3110 of the control tank 3100 is reduced.

And, as the pressure of the air space (S _a ) decreases, the diaphragm member 3120 may further expand inside the body 3110 . Accordingly, the refrigerant of the refrigerant circulation unit 200 may be further transferred to the diaphragm member 3120 (S26). When the refrigerant in the refrigerant circulation unit 200 is discharged to the diaphragm member of the control tank, the amount of refrigerant in the refrigerant circulation unit 200 is reduced. As a result, the pressure of the refrigerant circulation unit 200 is reduced. And, when the pressure of the air space (S _a ) and the first valve 3320 is equal to or less than the first reference pressure, the first valve 3320 is closed. And at this time, the pressure of the refrigerant circulation unit 200 may be equal to or less than the first reference pressure. Therefore, the pressure of the compressor pipe (P2) and the compressor 230 is equal to or less than the first reference pressure, so that it can be operated smoothly without malfunction or damage.

As another example, a case in which the pressure of the refrigerant circulation unit 200 decreases will be described below as an example.

The pressure of the refrigerant circulating unit 200 may be reduced when the refrigerant supplied in the summer season is used and the winter season comes (S31).

The first pressure sensor 220 installed in the compressor pipe (P2) measures the pressure in real time, and the second valve 3420 is opened and closed according to the pressure measured by the first pressure sensor 220 (S32). For example, when the pressure measured by the first pressure sensor 220 is greater than or equal to the second reference pressure (eg), the second valve 3420 remains closed. However, when the pressure measured by the first pressure sensor 220 is less than the second reference pressure, the second valve is opened (S33). Accordingly, air is introduced into the first supply pipe 3411 and transferred to the second supply pipe 3412 . The air transported through the second supply pipe 3412 is pushed toward the third valve 3430 by the pressurizer 3450, and thus the third valve 3430 may be opened. Accordingly, air is supplied to the air space S _a of the control tank 3100 via the third valve 3430 and the third supply pipe 3413 (S34).

When air is supplied to the air space (S _a ) of the control tank 3100 , the pressure in the air space (S _a ) increases, and as a result, the diaphragm member 3120 is pressurized. Accordingly, the refrigerant in the diaphragm member 3120 is discharged to the refrigerant circulation unit 200 (S35). That is, the refrigerant is discharged from the diaphragm member 3120 and supplied to the compressor pipe P2 through the connection pipe 3200 (S25). Accordingly, the pressure of the compressor pipe (P2), that is, the refrigerant circulation unit 200 increases.

The second valve 3420 is opened until the pressure measured by the first pressure sensor 220 becomes equal to or greater than the second reference pressure. Accordingly, the refrigerant in the diaphragm member 3120 is supplied to the refrigerant circulation unit 200 until the pressure measured by the first pressure sensor 220 becomes equal to or higher than the second reference pressure. When the pressure measured by the first pressure sensor 220 is equal to or greater than the second reference pressure, the second valve 3420 is closed. And, when the second valve 3420 is closed, the pressure of the refrigerant circulation unit 200 becomes equal to or higher than the second reference pressure. Therefore, the pressure of the compressor pipe and the compressor becomes equal to or higher than the second reference pressure, so that the compressor can be operated smoothly without malfunction or damage.

As described above, according to the embodiments, even if the volume of the refrigerant changes according to the temperature, the pressure of the refrigerant circulation unit 200 can be adjusted to a predetermined pressure. Accordingly, the compressor 230 provided in the refrigerant circulation unit 200 may be prevented from malfunctioning or being damaged when the pressure of the refrigerant circulation unit 200 is too high or low.

In addition, the pressure regulator 3000 discharges the refrigerant from the refrigerant circulation unit 200 according to the pressure of the refrigerant circulation unit 200 or replenishes the refrigerant to the refrigerant circulation unit 200 . Accordingly, the pressure of the refrigerant circulation unit 200 is automatically adjusted. That is, when the volume of the refrigerant expands due to the temperature rise and the pressure of the refrigerant circulation unit 200 increases, the refrigerant in the refrigerant circulation unit 200 is automatically discharged using the pressure control device 3000 to the refrigerant circulation unit. (200) to reduce the pressure. In addition, when the pressure of the refrigerant circulation unit 200 decreases due to the decrease in the volume of the refrigerant due to the decrease in temperature, the refrigerant in the pressure regulator 3000 is automatically supplied to the refrigerant circulation unit 200 so that the refrigerant circulation unit 200 ) to increase the pressure.

Therefore, it is not necessary to separately perform an operation of discharging the refrigerant from the refrigerant circulation unit 200 or replenishing the refrigerant every season or whenever the temperature changes. Due to this, it is possible to reduce the time for stopping the operation of the refrigerant circulation unit 200 and the cooling device including the refrigerant for discharging and replenishing the refrigerant, thereby improving the operation rate of the device.

100: heat exchange unit 3100: conditioning tank
3110: body 3120: diaphragm member
3300: first pressure regulator 3310: first regulating pipe
33320: first valve 3400: second pressure regulator
3410: first control pipe 3420: second valve

Claims (12)

A refrigerant circulation unit capable of circulating a refrigerant;
a control tank having an inner space in which refrigerant and air can be accommodated and connected to the refrigerant circulation unit;
a connection pipe connecting the refrigerant circulation unit and the control tank; and
The control tank controls the pressure inside the control tank according to the pressure of the refrigerant circulation part so that the refrigerant of the refrigerant circulation part is transferred to the control tank or the refrigerant in the control tank is transferred to the refrigerant circulation part. Including; connected pressure control unit,
The control tank,
A body having an inner space; and
A diaphragm member that can expand and contract with an inner space in which a refrigerant can be accommodated and is installed inside the body,
The inner space of the diaphragm member is separated from the inner space of the body, the outer space of the diaphragm member among the inner spaces of the body is a space for receiving air, and the inner space of the diaphragm member is transported from the refrigerant circulation unit. It is a space where the refrigerant is accommodated,
The connection pipe connects the refrigerant circulation unit and the diaphragm member,
The pressure control unit is connected to the body in communication with the outer space of the diaphragm member among the inner spaces of the body,
The pressure control unit controls a first pressure connected to the body to discharge air in the outer space of the diaphragm member when the pressure in the outer space of the diaphragm member among the inner spaces of the body exceeds a first reference pressure. A refrigerant treatment device comprising a regulator. delete The method of claim 1,
The pressure regulator,
a second pressure regulator connected to the body to supply air to the inner space of the body when the pressure of the refrigerant circulating part is less than a second reference pressure lower than the first reference pressure;
Refrigerant treatment device comprising a. The method of claim 3,
The first pressure regulator,
a first control pipe having one end connected to the body and having an outlet through which air can be discharged at the other end; and
A first valve connected between one end and the other end of the first control pipe to be opened when the pressure in the inner space of the body exceeds the first reference pressure and closed when the pressure is less than the first reference pressure. refrigerant treatment device. The method of claim 3,
The second pressure regulator,
a second control pipe having an inlet through which air can be introduced at one end and the other end connected to the body; and
A second valve connected between one end and the other end of the second control pipe to be opened when the pressure of the refrigerant circulation unit is less than the second reference pressure and closed when the pressure is greater than or equal to the second reference pressure. . The method according to any one of claims 3 to 5,
The refrigerant circulation unit,
A compressor capable of compressing the refrigerant discharged from the heat exchange unit in a gaseous state;
a compressor pipe connected between the heat exchange unit and the compressor; and
A condenser connected to the compressor to condense and liquefy the refrigerant compressed and discharged from the compressor;
The pressure regulator is a refrigerant treatment device connected to the compressor pipe. The method of claim 6,
The refrigerant circulation unit includes a pressure sensor for measuring the pressure of the compressor pipe,
The second pressure regulator operates to supply air to the inner space of the body when the pressure measured by the pressure sensor is less than the second reference pressure. A method of operating a refrigerant processing device for processing a refrigerant that is heat-exchanged with a cooling liquid supplied to a target device for cooling,
circulating the refrigerant into the refrigerant circulation unit; and
A process of adjusting the pressure of the refrigerant circulation unit using a control tank connected to the refrigerant circulation unit having a body having an internal space and a diaphragm member installed inside the body having an internal space in which a refrigerant can be accommodated; include,
The process of adjusting the pressure of the refrigerant circulation unit,
expanding the diaphragm member by transferring the refrigerant of the refrigerant circulation unit to the diaphragm member according to the pressure of the refrigerant circulation unit;
discharging air in the outer space of the diaphragm member to the outside according to the pressure of the outer space of the diaphragm member among the inner spaces of the body to further transfer the refrigerant of the refrigerant circulation unit to the inside of the diaphragm member; and
Including; supplying air to the outer space of the diaphragm member according to the pressure of the refrigerant circulation unit to transfer the refrigerant of the diaphragm member to the refrigerant circulation unit,
The process of discharging the air in the outer space of the diaphragm member to the outside is performed when the pressure in the outer space of the diaphragm member exceeds a first reference pressure. delete delete in claim 8
Including the step of measuring the pressure of the refrigerant circulation unit,
The process of supplying air to the outer space of the diaphragm member is performed when the measured pressure of the refrigerant circulation unit is less than a second reference pressure smaller than the first reference pressure. According to claim 8 or claim 11,
The method of claim 1 , wherein the target device includes a radar device that emits a radar to perform at least one of detecting and tracking a target.

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