KR102385310B1 - Chiller system - Google Patents

Abstract

To achieve an idea as described above, according to various embodiments of the present disclosure, a chiller system is disclosed. The chiller system comprises: a fluid circulation unit supplying fluid to a cooling target; a heat exchanger allowing the fluid to exchange heat with a refrigerant; and a cooling unit supplying the refrigerant to the heat exchanger. At least a portion of the fluid discharged according to temperature of the fluid discharged from the fluid circulation unit is supplied to the heat exchanger.

Description

chiller system {CHILLER SYSTEM}

The present disclosure relates to a chiller system, and more specifically, to a cooling device for performing a stable process by cooling the thermal load of industrial facilities (eg, semiconductor manufacturing facilities, lasers, injection machines, medical devices and chemical processing facilities, etc.) will be.

In general, a chiller system is a cooling device or refrigeration device that supplies chilled water or refrigerant to a cooling demand such as an air conditioner or a refrigerator, and may include a cooling unit, a heat exchanger, a fluid circulation device, a cooling target, and a fluid movement pipe. there is. For example, the cooling unit, the heat exchanger, the fluid circulation device, and the cooling target may be interconnected through a fluid flow pipe, and as a cooling fluid (eg, coolant) with good heat transfer efficiency circulates through the connected fluid flow pipe, the low temperature to the cooling target can be supplied for cooling.

More specifically, the heat exchanger included in the chiller system may secure a low-temperature cooling fluid through heat exchange based on heat of vaporization generated through compression, condensation, expansion, and evaporation of the cooling unit and deliver it to the fluid circulation device. Here, the fluid circulation device serves to circulate the cooling fluid to each of the heat exchanger and the cooling target.

Specifically, the fluid circulation device may supply a cooling fluid to the heat exchanger, and may receive a low-temperature cooling fluid obtained through a heat exchange process with a cooling unit performed in the heat exchanger. The low-temperature cooling fluid received by the fluid circulation device from the heat exchanger is supplied to maintain the cooling target at a low temperature, and is returned to the fluid circulation device after heat exchange in the cooling target.

In this case, the temperature of the low-temperature cooling fluid supplied to the cooling target is increased through heat exchange with the cooling target during the circulation process. That is, the temperature of the cooling fluid returned to the fluid circulation device by circulating the cooling target may be a relatively high temperature, not an appropriate temperature for continuously cooling the cooling target. Accordingly, the fluid circulating device circulates the cooling fluid (ie, low-temperature cooling fluid) and the cooling target delivered from the heat exchanger so that the cooling fluid maintains an appropriate temperature for maintaining the cooling target at a low temperature (that is, the cooling fluid , a relatively high temperature cooling fluid) can be heat exchanged.

In other words, the fluid circulation device may supply and circulate the cooling fluid to each of the heat exchanger and the cooling target, and may mix the circulating cooling fluid in both directions. To this end, the fluid circulation device may include two pumps for performing each of an internal circulation for circulating the cooling fluid to the heat exchanger and an external circulation for circulating the cooling target to the cooling target. For example, the fluid circulation device may include two pumps, an internal circulation pump and an upper circulation pump, and may perform external circulation and internal circulation for each circulation cycle through each pump.

However, the conventional fluid circulation device, since it must be provided with two pumps for internal circulation and external circulation, the provided size can be enormous. In addition, as the two pumps are operated separately, it may not be efficient in terms of energy efficiency.

In addition, in order to cool the cooling target to perform a stable process (that is, to allow the cooling target to operate within a specific temperature range), the fluid circulation device must supply a cooling fluid having a constant temperature and pressure to the cooling unit, It is difficult to constantly control the temperature and pressure deviation of the cooling fluid.

Republic of Korea Patent Publication No. 10-2018-0121606

An object of the present disclosure is to solve the above problems, and to provide a chiller system capable of stably cooling a cooling target by maintaining a constant temperature and pressure of a fluid supplied to the cooling target.

The problems to be solved by the present disclosure are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A chiller system according to various embodiments of the present disclosure for solving the above-described problems is disclosed. The chiller system includes a fluid circulation unit for supplying a fluid to a cooling target, a heat exchanger for exchanging heat with the refrigerant supplied with the fluid, and a cooling unit for supplying the refrigerant to the heat exchanger, the temperature of the fluid discharged from the fluid circulation unit It may be characterized in that at least a portion of the discharged fluid is supplied to the heat exchanger.

In an alternative embodiment, the fluid circulation unit, a circulation tank for storing the fluid therein, a pump for generating a flow of the fluid, a relief valve for controlling the pressure of the fluid discharged from the pump, from the heat exchanger to the circulation tank It may include a control valve for controlling the amount of supplied fluid, a fluid discharge pipe for discharging the fluid stored in the circulation tank, and a fluid inlet pipe for introducing the fluid into the circulation tank.

In an alternative embodiment, the fluid discharge pipe includes a temperature sensor for measuring the temperature of the discharged fluid, a branch for dividing the discharged fluid, a first supply pipe connected to the cooling target, and a second supply pipe connected to the heat exchanger. Including, it may be characterized in that the operation of the control valve is controlled according to the value measured by the temperature sensor.

In an alternative embodiment, the fluid inlet pipe includes a first inlet pipe connected to the cooling target and a second inlet pipe connected to the heat exchanger, and the fluid flowing in from the second inlet pipe operates the control valve. It may be characterized in that the amount introduced into the circulation tank through the set amount.

In an alternative embodiment, the relief valve, provided between the temperature sensor and the pump, may be characterized in that the fluid above a set pressure is discharged to the circulation tank.

In an alternative embodiment, the fluid circulation unit may further include a heater for controlling the temperature of the fluid inside the circulation tank, a filter provided at the front end of the pump to filter the fluid, and a lower tank for replenishing the fluid to the circulation tank. can

In an alternative embodiment, the circulation tank further includes a fluid refill pipe to which a fluid is supplied from the outside, and a water level control pipe for adjusting the level of the fluid inside the circulation tank, and the fluid introduced into the water level control pipe is the lower It may be characterized by heading to the tank.

In an alternative embodiment, the pump generates a flow of fluid with a suction force caused through mutual rotation between a plurality of helico gears, and at least one of the plurality of helico gears shares a motor and a central axis of rotation It may be characterized in that it is coupled to the coupling.

In an alternative embodiment, the control valve is connected to one end of the cylinder and a solenoid valve for controlling the operation, an upper body portion including an accommodating space that allows vertical movement of the cylinder based on the control operation of the solenoid valve, and the fluid It may include a lower body portion forming a passage for discharging the.

In an alternative embodiment, the fluid circulation part may be provided in plurality, and the fluid discharged from each fluid circulation part may be characterized in that it exchanges heat with a refrigerant pipe provided in the heat exchanger at the same time.

Other specific details of the present disclosure are included in the detailed description and drawings.

The present disclosure may provide a chiller system capable of stably cooling the cooling target by maintaining a constant temperature and pressure of the fluid supplied to the cooling target.

In addition, it is possible to provide the effect of maximizing the efficiency of the circulation system, such as maximizing energy efficiency by simultaneously performing internal and external circulation in one pump, and improving dimensional efficiency by minimizing the size of the device at the same time.

Effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

Various aspects are now described with reference to the drawings, wherein like reference numbers are used to refer to like elements throughout. In the following example, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It will be evident, however, that such aspect(s) may be practiced without these specific details.
1 shows an overall schematic diagram of a chiller system related to an embodiment of the present disclosure;
2 is an exemplary view illustrating a cooling cycle of a cooling unit related to an embodiment of the present disclosure.
3 is an exemplary diagram illustrating a detailed block configuration diagram of a chiller system related to an embodiment of the present disclosure.
4 is a view illustrating an overall perspective view of a fluid circulation unit related to an embodiment of the present disclosure.
5 is a view showing an exemplary fluid circulation unit viewed from the side related to an embodiment of the present disclosure.
6 is a view exemplarily showing a pump according to an embodiment of the present disclosure.
7 is a view showing an exemplary relief valve related to an embodiment of the present disclosure.
8 is an exemplary view illustrating a control valve related to an embodiment of the present disclosure.

Various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding of one or more aspects. However, it will also be appreciated by one of ordinary skill in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain illustrative aspects of one or more aspects. These aspects are illustrative, however, and some of various methods may be employed in the principles of the various aspects, and the descriptions set forth are intended to include all such aspects and their equivalents. Specifically, as used herein, “embodiment”, “example”, “aspect”, “exemplary”, etc. are not to be construed as advantageous or advantageous over any aspect or design described herein. It may not be.

Hereinafter, the same or similar components are assigned the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical ideas disclosed in the present specification are not limited by the accompanying drawings.

Although the first, second, etc. are used to describe various elements or elements, these elements or elements are not limited by these terms, of course. These terms are only used to distinguish one element or component from another. Accordingly, it goes without saying that the first element or component mentioned below may be the second element or component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from context, "X employs A or B" is intended to mean one of the natural implicit substitutions. That is, X employs A; X employs B; or when X employs both A and B, "X employs A or B" may apply to either of these cases. It should also be understood that the term “and/or” as used herein refers to and includes all possible combinations of one or more of the listed related items.

Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements, and/or groups thereof. should be understood as not Also, unless otherwise specified or unless it is clear from context to refer to a singular form, the singular in the specification and claims should generally be construed to mean “one or more”.

When a component is referred to as being “connected” or “connected” to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that there is no other element in the middle.

The suffixes “module” and “part” for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves.

References to an element or layer “on” or “on” another component or layer mean that another layer or other component in between as well as directly above the other component or layer. Including all intervening cases. On the other hand, when a component is referred to as “directly on” or “immediately on”, it indicates that another component or layer is not interposed therebetween.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a component or a correlation with other components. The spatially relative terms should be understood as terms including different orientations of the device during use or operation in addition to the orientation shown in the drawings.

For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Objects and effects of the present disclosure, and technical configurations for achieving them will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. In describing the present disclosure, if it is determined that a detailed description of a well-known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description thereof will be omitted. In addition, the terms described below are terms defined in consideration of functions in the present disclosure, which may vary according to intentions or customs of users and operators.

However, the present disclosure is not limited to the embodiments disclosed below and may be implemented in various different forms. Only the present embodiments are provided so that the present disclosure is complete, and to fully inform those of ordinary skill in the art to which the present disclosure belongs, the scope of the disclosure, and the present disclosure is only defined by the scope of the claims . Therefore, the definition should be made based on the content throughout this specification.

1 shows an overall schematic diagram of a chiller system related to an embodiment of the present disclosure;

The chiller system 1 of the present disclosure may refer to a cooling device or a refrigeration device that supplies cold water or refrigerant to the cooling target 10 such as an air conditioner or a refrigerator. The chiller system 1 can secure a low-temperature fluid through the heat exchanger 200 that performs heat exchange with the cooling unit 300 , and supplies the secured fluid to the cooling target 10 to the cooling target 10 . ) can be cooled.

Here, the cooling target 10 may refer to industrial equipment requiring low temperature, and may include, for example, semiconductor manufacturing equipment, lasers, injection machines, medical devices, and chemical process equipment. The detailed description of the industrial equipment related to the above-described cooling target is only an example, and the present disclosure is not limited thereto.

The chiller system 1 according to an embodiment of the present disclosure, as shown in FIG. 1 , includes a cooling target 10 , a fluid circulation unit 100 , a heat exchanger 200 , and a cooling unit 300 . can The components illustrated in FIG. 1 are exemplary, and additional components may exist or some of the components illustrated in FIG. 1 may be omitted. The cooling target 10, the fluid circulation unit 100, the heat exchanger 200 and the cooling unit 300 according to embodiments of the present disclosure are interconnected through a moving pipe for fluid movement, or a predetermined distance from the moving pipe. It may be provided to have a distance. That is, the cooling target can be maintained at a low temperature as the fluid circulates through the moving pipe connecting each component.

The cooling unit 300 included in the chiller system 1 may maintain the fluid circulating in the heat exchanger 200 at a low temperature through heat exchange with the heat exchanger 200 . Specifically, the cooling unit 300 may be disposed adjacent to the heat exchanger 200 . In this case, the cooling unit 300 may maintain the refrigerant pipe 210 penetrating the inside of the heat exchanger 200 at a low temperature by causing the heat of vaporization to absorb the surrounding heat.

In detail, the cooling unit 300 may include a compressor, a condenser, an expansion valve, and an evaporator. Also, the cooling unit 300 may include a moving pipe through which a cooling fluid (eg, a refrigerant) moves, and the moving pipe may interconnect a compressor, a condenser, an expansion valve, and an evaporator. Through the moving tube, the cooling fluid may circulate through the compressor, the condenser, the expansion valve and the evaporator.

Meanwhile, the cooling unit 300 may include two or more cooling cycles having a compressor, a condenser, an expansion valve, and an evaporator as a basic configuration. For example, the refrigerant cooled in the first cooling cycle and the refrigerant circulating in the second cooling cycle exchange heat with each other to lower the temperature of the refrigerant discharged through the expansion valve in the second cooling cycle to the lowest value.

The heat exchanger 200 provides a space where the low-temperature refrigerant generated through the cooling cycle of the cooling unit 300 and the fluid in the fluid circulation unit 100 can exchange heat with each other, and the refrigerant and the fluid that has completed heat exchange After flowing into the fluid circulation unit 100 again, at least a portion is supplied to the cooling target (10). Here, the cooling fluid circulating in the cooling unit 300 and the fluid supplied or delivered to the fluid circulation unit 100 may mean different fluids. The cooling fluid and the fluid may each circulate through the cooling unit 300 and the heat exchanger 200 through different moving pipes. A more detailed description of the cooling cycle of the cooling unit 300 will be described below with reference to FIG. 2 .

2 is an exemplary view illustrating a cooling cycle of a cooling unit related to an embodiment of the present disclosure.

According to an embodiment of the present disclosure, the cooling unit 300 may include a compressor for compressing a cooling fluid. The compressor pressurizes the cooling fluid of low temperature and low pressure to maintain the cooling fluid at high temperature and high pressure. For example, the compressor may include an impeller for compressing the cooling fluid, a rotary shaft connected to the impeller, and a motor for rotating the rotary shaft.

In addition, the cooling unit 300 may include a condenser for condensing the cooling fluid by discharging heat from the cooling fluid compressed by the compressor. The condenser may include a condensing space in which the cooling fluid may be condensed, and may condense (or liquefy) the high-temperature and high-pressure cooling fluid received from the compressor. For example, the condenser may supply air sucked in from the outside to the high-temperature, high-pressure gas delivered from the compressor to liquefy it. In this case, hot air may be discharged as heat is generated.

In addition, the cooling unit 300 may include an expansion valve formed to expand the refrigerant condensed through the condenser. The volume of the cooling fluid is changed in the process of circulating the cooling unit 300 , and an expansion valve may be provided to absorb the volume change to smoothly perform the cooling action. As the cooling fluid passes through the narrow expansion valve, the velocity may increase and the pressure may decrease due to capillary action. Such an expansion valve, for example, may be formed of a heat-resistant synthetic resin to enable contraction and expansion.

In addition, the cooling unit 300 may include an evaporator for evaporating the low-pressure liquid cooling fluid delivered from the expansion valve. The evaporator may be vaporized by supplying hot air to the low-pressure liquid cooling fluid. That is, the cooling fluid becomes a low-pressure liquid state in the process of passing through the expansion valve, and the low-pressure cooling fluid can be easily vaporized by the heat generated by the evaporator. The heat of vaporization, which absorbs heat, can cause the surrounding air to cool. The completely evaporated gaseous cooling fluid enters the compressor again, so that the circulation of the cooling system of the cooling unit can be continued.

As shown in FIG. 3 , the portion corresponding to the evaporator of the cooling unit 300 may correspond to the refrigerant pipe 210 passing through the inside of the heat exchanger 200 . That is, the heat exchanger 200 indirectly connects the refrigerant pipe 210 through which the low-temperature refrigerant generated by the cooling unit 300 flows and the supply pipe (eg, the second supply pipe) for supplying the fluid discharged from the fluid circulation unit 100 . By contacting, the fluid supplied from the fluid circulation unit 100 and circulating in the heat exchanger 200 may be maintained at a low temperature below a certain temperature. Specifically, the refrigerant pipe 210 may be provided adjacent to the second supply pipe 174 connected to the fluid circulation unit 100, and maintain the fluid circulating inside the second supply pipe 174 through heat exchange at a low temperature. can

As described above, the heat exchanger 200 of the present disclosure may cool the fluid discharged through the fluid circulation unit 100 to a low temperature below a certain temperature. The fluid circulation unit 100 may supply or deliver at least a portion of the fluid inside the fluid circulation unit 100 to the heat exchanger 200 through the second supply pipe 174 . The fluid transferred from the fluid circulation unit 100 to the heat exchanger 200 may be a fluid converted to a relatively high temperature during heat exchange with the cooling target 10 .

In addition, the heat exchanger 200 may heat-exchange the fluid delivered from the fluid circulation unit 100 with the refrigerant pipe 210 to convert the fluid to a low temperature below a set temperature and re-deliver it to the fluid circulation unit 100 .

According to an embodiment of the present disclosure, the fluid circulation unit 100 includes a circulation tank 110 , a pump 120 , a relief valve 130 , a control valve 140 , a fluid discharge pipe 170 , and a fluid inlet pipe. (180). The fluid circulation unit 100 may supply and circulate the fluid to each of the heat exchanger 200 and the cooling target 10 , and mix the circulated and returned fluids in both directions in the circulation tank 110 . In this case, mixing the fluid in both directions circulating and returning each of the heat exchanger 200 and the cooling target 10 is to maintain the fluid at an appropriate temperature for maintaining the cooling target at a low temperature.

Briefly looking at the flow of the fluid, the fluid that has undergone heat exchange with the refrigerant supplied from the cooling unit 300 in the heat exchanger 200 is introduced into the circulation tank 110 through the control valve 140 . The fluid filled inside the circulation tank 110 passes through the filter 160 and the relief valve 130 in turn by the action of the pump 120 . When the pressure of the fluid that has passed through the pump 120 is greater than or equal to a set value, some fluid is discharged back into the circulation tank 110 through the relief valve 130 . The remaining fluid passes through the temperature sensor 172 and the branch 171 , some flows to the cooling target 10 , and some flows to the heat exchanger 200 . Depending on the temperature of the fluid measured by the temperature sensor 172, it is determined whether the branch 171 is opened and the control valve 140 is operated. The fluids that have each completed heat exchange in the cooling target 10 and the heat exchanger 200 are introduced into the circulation tank 110 and mixed with each other.

A detailed description of the structural features of the fluid circulation unit 100 and the effects generated through the structural features will be described later with reference to FIGS. 4 to 8 below.

4 is a view illustrating an overall perspective view of a fluid circulation unit related to an embodiment of the present disclosure. 5 is a view showing an exemplary fluid circulation unit viewed from the side related to an embodiment of the present disclosure. 6 is a view exemplarily showing a pump according to an embodiment of the present disclosure. 7 is a view showing an exemplary relief valve related to an embodiment of the present disclosure. 8 is an exemplary view illustrating a control valve related to an embodiment of the present disclosure.

Specifically, the fluid circulation unit 100 includes a circulation tank 110 for storing a fluid therein, a pump 120 for generating a flow of fluid, and a relief valve 130 for controlling the pressure of the fluid discharged from the pump 120 . ), a control valve 140 for controlling the amount of fluid supplied from the heat exchanger 200 to the circulation tank 110 , a fluid discharge pipe 170 for discharging the fluid stored in the circulation tank 110 , and a circulation tank 110 ) It may include a fluid inlet pipe 180 for introducing a fluid into the furnace.

According to an embodiment of the present disclosure, the fluid circulation unit 100 may include a circulation tank 110 for storing a fluid therein. The circulation tank 110 may mean a storage space in which fluids returned after circulating each of the heat exchanger 200 and the cooling target 10 are stored. For example, the fluid circulating in the heat exchanger 200 may be converted into a low-temperature fluid through heat exchange with the refrigerant pipe 210 and returned to the circulation tank 110 , and the fluid circulating in the cooling target 10 may be , may be converted into a high-temperature fluid through heat exchange with the cooling target 10 and return to the circulation tank 110 . The fluid circulation unit 100 mixes the fluid circulated through each of the heat exchanger 200 and the cooling target 10 in order for the fluid to maintain an appropriate temperature for maintaining the cooling target 10 at a low temperature, thereby forming a circulation tank ( 110) can be stored.

As a specific example, the temperature for properly performing the process of the cooling target 10 related to the semiconductor manufacturing facility may be -50°C. In this case, a fluid of -60°C may be supplied to the cooling target 10 . However, heat exchange with the target occurs in the circulation process for maintaining the cooling target 10 at -50°C, and accordingly, the circulated and returned fluid may be changed to a temperature of -40°C. That is, the temperature of the fluid may be increased through heat exchange with the cooling target 10 in the process.

In this case, the fluid circulation unit 100 can mix the returned fluid (eg, -40 ℃) and the returned fluid (eg, -70 ℃) through the heat exchanger 200 circulating through the cooling target 10. there is. That is, the fluid having an elevated temperature in the process of circulating the cooling target 10 may be changed to a low temperature as it is mixed with the low-temperature fluid returned after circulating the heat exchanger. The mixed fluid changed to a low temperature again circulates through each of the cooling target 10 and/or the heat exchanger 200, and by repeating the above process, the cooling target 10 is maintained at a low temperature suitable for the semiconductor equipment process. can do it To this end, the circulation tank 110 may be provided with a fluid discharge pipe and a fluid inlet pipe connected to each of the heat exchanger 200 and the cooling target 10 are connected.

On the other hand, if the temperature of the fluid mixed inside the circulation tank 110 is lower than the target temperature, the heater 150 inserted into the circulation tank 110 may be operated to increase the temperature of the fluid to the target temperature.

The fluid discharge pipe 170 may mean a connection pipe for discharging or supplying a fluid from the circulation tank 110 to the heat exchanger 200 and the cooling target 10 , respectively. The fluid discharge pipe is, as shown in FIGS. 4 to 5 , the first supply pipe 173 for transferring the fluid discharged from the circulation tank 110 to the cooling target 10 and the fluid discharged from the circulation tank 110 . It may include a second supply pipe 174 for transferring the to the heat exchanger (200).

The fluid inlet pipe may refer to a connection pipe that circulates each of the heat exchanger 200 and the cooling target 10 to transfer the fluid to the circulation tank 110 . As shown in FIGS. 4 to 5 , the fluid inlet pipe circulates the first inlet pipe 181 and the heat exchanger 200 for transferring the fluid circulated through the cooling target 10 to the circulation tank 110 . A second inlet pipe 182 for transferring the fluid to the circulation tank 110 may be included.

In an additional embodiment, the circulation tank 110 may include a fluid refill pipe 111 to which a fluid is supplied from the outside. The fluid refill tube 111 may be a tube provided to refill the amount of fluid. For example, in the fluid circulating in the chiller system 1 of the present disclosure, the amount of the fluid may be somewhat reduced due to a pressure loss in the pipe or a minute leakage for a long time during the circulation process. A decrease in the amount of fluid may cause a decrease in the low temperature heat transfer efficiency to the cooling target. In this case, the fluid in the circulation tank 110 through the fluid refill pipe 111 can be maintained in an appropriate amount of the fluid.

In addition, the circulation tank 110 may include a water level control pipe 112 for adjusting the level of the internal fluid. The water level control pipe 112 means a moving pipe connected to the lower tank 190 located on the lower side of the circulation tank 110, and when a fluid above a certain water level is supplied into the circulation tank 110 and overflows , serves to discharge the fluid to the lower tank (190). For example, the water level control tube 112 may be provided in a cylindrical shape with a hollow inside, and may be provided to have a predetermined height in the circulation tank 110 . That is, when the level of the fluid exceeds a certain height, the excess fluid may be introduced into the water level control tube 112 .

In other words, the fluid introduced into the water level control pipe 112 may be directed to the lower tank. Accordingly, in the process of replenishing the fluid through the fluid refill pipe 111, even when the fluid is over-supplied, the amount of fluid above a certain standard is prevented from being stored or stored in the circulation tank 110, thereby preventing a decrease in system efficiency. can provide

According to an embodiment of the present disclosure, the fluid circulation unit 100 may include a pump 120 for generating a flow of the fluid. The chiller system 1 of the present disclosure may be characterized in that it includes one pump.

For a more specific example, in the case of a general fluid circulation unit, a first pump for circulating the fluid to the cooling target and a second pump for circulating the fluid to the heat exchanger may be included, ie, two pumps. That is, in the case of a general chiller system, it is possible to maintain the fluid at an appropriate temperature (ie, an appropriate temperature for maintaining the cooling target at a low temperature) by inducing circulation of the fluid through each pump for each circulation cycle. However, in this case, since two pumps must be provided, the size of the fluid circulation unit may be increased. In addition, as two pumps are operated, it may not be efficient in terms of energy efficiency.

Accordingly, the fluid circulation unit 100 of the present disclosure may be designed to include one pump 120 to improve operational efficiency and provision efficiency. A more detailed description of the pump 120 of the present disclosure will be described below with reference to FIG. 6 .

6 , the pump 120 may include a first housing 121 , a second housing 122 , and a motor 123 . The first housing 121 included in the pump 120 may generate a suction force and allow movement of the fluid through the generated suction force.

The motor 123 refers to a device that converts electrical energy into mechanical energy using a force received by a conductor through which a current flows in a magnetic field, characterized in that it applies rotation to the rotating shaft 122a through the generated mechanical energy. can As shown in FIG. 6 , the motor may be coupled to the rotation shaft 122a, and may rotate the rotation shaft through the generated mechanical energy.

The second housing 122 may form an accommodation space for accommodating the rotation shaft 122a coupled to the motor 123 . The accommodating space may include a first heat insulating material 122b provided along the circumference of the outer circumferential surface of the rotation shaft 122a. The chiller system 1 of the present disclosure may be a cooling system for maintaining the cooling target 10 at a cryogenic temperature. Accordingly, the first insulating material 122b may be provided in a part of the accommodating space inside the second housing in order to prevent a decrease in efficiency due to the effect of low temperature. This can provide the effect of improving operating efficiency, such as enabling continuous use at cryogenic temperatures.

The first housing 121 may be connected to one end of the second housing 122 . In this case, at least a portion of each housing is formed to pass through, and the rotation shaft 122a provided in the second housing 122 and the helico gear 121c provided in the first housing 121 are connected through the through space. can In this case, the number of helico gears 121c provided in the first housing 121 may be plural, and one helico gear among the plurality of helico gears may be connected to the rotation shaft 122a. That is, at least one of the plurality of helico gears may be coupled and connected to share a central axis of rotation with the motor 123 .

The first housing 121 may include an input hole 121a, a first tube 121b, a plurality of helico gears 121c, a second tube 121d, and an exhaust hole 121e. The input hole 121a may be a hole into which the fluid is introduced, and the discharge hole 121e may mean a hole through which the fluid is discharged. The first pipe 121b may mean a connecting pipe connecting the input hole 121a and one of the plurality of helico gears (eg, the first helico gear), and the second pipe 121d may mean a connector for connecting another helico gear (eg, a second helico gear) among the plurality of helico gears. In one embodiment, the first pipe (121b) and the second pipe (121d) may be provided as a bushing (busing) for minimizing thermal expansion and thermal contraction due to the fluid. Such a bushing may be provided through a material having self-lubrication and improved friction durability. Accordingly, it has high durability against continuous shaft rotation, and has the effect of improving operating efficiency, such as enabling continuous use at cryogenic temperatures. The fluid may be introduced into the input hole 121a through the suction force generated through the pump 120 to be discharged or discharged through the discharge hole 121e.

Specifically, the pump 120 may generate a fluid flow with a suction force caused by mutual rotation between the plurality of helico gears 121c. As shown in FIG. 6 , the two helico gears 121c may be provided in the first housing 121 . Here, the helico gears may be provided through shapes corresponding to each other. For example, the helico gear may be provided to have a groove and a protrusion, and may be characterized in that it rotates in engagement with each of the grooves and protrusions of another helico gear.

That is, the motor 123 applies a rotational force to the rotational shaft 122a, and when the rotational shaft 122a is rotated, one helico gear 121c connected to the corresponding rotational shaft 122a may be rotated. In addition, rotation of one helico gear may cause rotation of another helico gear provided in engagement with the helico gear. A flow of fluid may be generated through such a mechanical mechanism. That is, the fluid located in one direction of the first housing 121 is injected into the input hole 121a due to the suction force generated through mutual rotation between the two helico gears 121c, and the first tube 121b and the two It may be discharged through the discharge hole 121e through the helico gear 121c and the second pipe 121d.

As described above, as the fluid moves only inside the first housing 121 , the fluid may not be transferred to the second housing 122 in which the motor 123 for driving the gear and the rotation shaft 122a are located. That is, since the gear and the motor for applying the rotational force to the gear are separately provided, the ratio of energy consumption through the fluid can be significantly reduced. This may have the effect of improving energy efficiency by minimizing the resistance of the rotational force generated through the motor.

In an embodiment, the input hole 121a may be provided in the direction of the circulation tank 110 , and the discharge hole 121e may be provided in the fluid discharge pipe 170 direction (ie, the cooling target and the heat exchange unit direction).

According to an embodiment of the present disclosure, the pump 120 may generate a flow of fluid by a suction force through mutual rotation between the plurality of helico gears 121c. Here, the flow of the fluid may mean the flow of the fluid moving from the circulation tank 110 to the fluid discharge pipe 170 .

In detail, the fluid circulation unit 100 may include a fluid discharge pipe for discharging the fluid stored in the circulation tank 110 . That is, the pump 120 is provided between the circulation tank 110 and the fluid discharge pipe, and may serve to discharge the fluid located in the circulation tank 110 to the fluid discharge pipe. In other words, the input hole 121a of the pump 120 may be connected to the circulation tank 110 , and the discharge hole 121e may be connected to the fluid discharge pipe 170 .

The fluid discharge pipe may be a connection pipe for supplying the fluid discharged from the circulation tank 110 to the heat exchanger 200 and the cooling target 10 , respectively. The fluid discharge pipe is, as shown in FIGS. 4 to 5 , the first supply pipe 173 for transferring the fluid discharged from the circulation tank 110 to the cooling target 10 and the fluid discharged from the circulation tank 110 . It may include a second supply pipe 174 for transferring the to the heat exchanger (200). In addition, the fluid discharge pipe may include a branch 171 through which the fluid discharged from the circulation tank 110 is divided. The fluid discharge pipe may be divided into a first supply pipe 173 and a second supply pipe 174 based on the branch 171 .

That is, the fluid discharged from the circulation tank 110 through the pump 120 is delivered to each of the first supply pipe 173 and the second supply pipe 174 through the branch unit 171 , and the cooling target 10 and heat exchange Each of the groups 200 may be supplied. In other words, the fluid circulation unit 100 of the present disclosure may transfer the fluid to each of the cooling target 10 and the heat exchanger 200 through one pump 120 .

Accordingly, by enabling fluid transfer in one pump in both directions (that is, in the cooling target direction and in the heat exchanger direction), energy efficiency is maximized, and at the same time, the size of the device is minimized to improve space (dimension) efficiency, etc. It can provide the effect of maximizing the efficiency of the chiller system.

On the other hand, the present invention has the effect of maintaining a constant temperature and pressure of the fluid even if only one pump is used. A relief valve 130 is installed to maintain a constant pressure of the fluid discharged to the outside of the circulation tank 110, and a control valve 140 using a temperature sensor 172 to maintain a constant temperature and a branch portion ( 171) is controllable (fluid temperature cooling direction), and the temperature of the fluid can be raised by using the heater 150 .

According to an embodiment of the present disclosure, the fluid circulation unit 100 may include a fluid inlet pipe 180 for introducing a fluid into the circulation tank 110 . The fluid inlet pipe 180 means a pipe that connects the fluid discharged to the fluid discharge pipe through the pump 120 and circulated through each of the cooling target 10 and the heat exchanger 200 to return to the circulation tank 110 . can do. In one embodiment, the first inlet pipe 181 may be connected to the first supply pipe 173 , and the second inlet pipe 182 may be connected to the second supply pipe 174 . That is, the fluid inlet pipe is, as shown in FIGS. 4 and 5 , the first inlet pipe 181 connected to the cooling target 10 and the second inlet pipe 182 connected to the heat exchanger 200 . may include

According to an embodiment of the present disclosure, the fluid circulation unit 100 may include a relief valve 130 for controlling the pressure of the fluid discharged from the pump 120 . The relief valve 130 is provided between the temperature sensor 172 and the pump 120 and may be characterized in that the fluid above a set pressure is discharged into the circulation tank 110 . Specifically, the relief valve 130 is provided between the pump 120 and the branch 171 to maintain the fluid delivered to the branch 171 to have a constant pressure. A more detailed description of the relief valve 130 will be described later with reference to FIG. 7 .

According to an embodiment of the present disclosure, the relief valve 130 may be provided between the pump 120 and the branch 171 . That is, the fluid discharged through the pump 120 may be transferred to the branch 171 through the relief valve 130 . In this case, the relief valve 130 may control the pressure of the fluid transferred from the pump 120 to the branch 171 .

Specifically, as shown in FIG. 7 , the relief valve 130 includes a pressure discharge hole 131 , a pressure blocking membrane 132 , a pressure discharge passage 133 , a relief spring 134 and a support surface 135 . can do. In the present disclosure, it may be important that the fluid delivered to the branch 171 has a constant temperature and pressure. For example, when the pressure of the fluid delivered to the branch is relatively high, there is a risk of reducing the operating efficiency of the device by causing leakage by pressurizing the pipes for moving the fluid. Accordingly, the relief valve 130 may recirculate the fluid with a predetermined pressure or more to the circulation tank 110 , rather than transferring the fluid to the branch 171 direction.

More specifically, the pressure discharge hole 131 of the relief valve 130 may be provided in relation to the direction in which the fluid moves. For example, the fluid may move in the left direction of the pressure discharge hole 131 with reference to FIG. 7 . In this case, when the pressure of the fluid greater than the predetermined reference value is generated, the fluid injected through the pressure discharge hole 131 pushes the pressure blocking membrane 132 to form the pressure discharge passage 133, and the formed pressure discharge passage 133 The fluid may be discharged through and recirculated to the circulation tank 110 . Here, the pressure greater than or equal to the predetermined reference value may be based on the elastic force of the relief spring 134 provided between the support surface 135 and the pressure blocking membrane 132 as shown in FIG. 7 . For example, when the pressure of the fluid increases, pressure is applied to the pressure blocking membrane 132 , the relief spring 134 is pressed to secure the pressure discharge passage 133 , and the fluid is discharged through the secured pressure discharge passage 133 . It can be returned to the circulation tank (110). In this case, as the fluid is discharged through the pressure discharge passage 133 , the pressure of the fluid is lowered. Accordingly, the relief spring 134 is restored and the secured pressure discharge passage 133 may be blocked.

That is, by preventing a fluid exceeding a predetermined pressure from being transmitted through the structural features of the relief valve 130 as described above, the stability of the system can be secured. In addition, since the pressure higher than a certain value can be limited through the relief spring 134 , the pressure limit setting can be easily changed only by replacing the relief spring 134 , thereby providing convenience.

According to an embodiment of the present disclosure, the fluid circulation unit 100 may include a control valve 140 for controlling the amount of fluid supplied from the heat exchanger 200 to the circulation tank 110 . The control valve 140 may be provided between the heat exchanger 200 and the circulation tank 110 to control the fluid amount of the low-temperature fluid supplied from the heat exchanger 200 to the circulation tank 110 . Here, the control of the amount of fluid may be to maintain the fluid mixed in the circulation tank 110 at an appropriate temperature.

For example, when the cooling target 10 rises from a temperature suitable for the process, in order to lower the temperature of the fluid stored in the circulation tank 110 (that is, to lower the temperature of the fluid supplied to the cooling target) The control valve 140 may increase the amount of fluid supplied from the heat exchanger 200 to the circulation tank 110 . Conversely, when the cooling target 10 is lowered than the temperature suitable for the process, control to increase the temperature of the fluid stored in the circulation tank 110 (that is, to increase the temperature of the fluid supplied to the cooling target) The valve 140 may reduce the amount of fluid supplied from the heat exchanger 200 to the circulation tank 110 and operate the heater 150 . A detailed description of the control valve 140 for determining the amount of fluid supplied from the heat exchanger 200 to the circulation tank 110 of the present disclosure will be described below with reference to FIG. 8 .

As shown in FIG. 8 , the control valve 140 may include a solenoid valve 141 , an upper body part 142 and a lower body part 143 . The components shown in FIG. 8 are exemplary, and additional components may be included in the control valve or some of the components shown in FIG. 8 may be omitted from the control valve.

According to an embodiment of the present disclosure, the control valve 140 may include a solenoid valve 141 for controlling the operation of the control valve 140 . The solenoid valve 141 may control the on/off operation of the control valve 140 . For example, the solenoid valve 141 can control the operation of the control valve 140 by automatically opening and closing the valve using the electromagnetic force of the electromagnetic coil based on the current signal received from the temperature sensor 172 . . The control valve 140 performs the opening/closing action of the flow path through up/down movement based on the control operation of the solenoid valve 141 , and the amount of low-temperature fluid supplied from the heat exchanger 200 to the circulation tank 110 . can be controlled. That is, the fluid flowing in from the second inlet pipe 182 may be introduced by an amount set to the circulation tank 110 through the control valve 140 .

In addition, the control valve 140 may include a cylinder 142a and an upper body portion 142 including an accommodation space for the cylinder 142a to perform a vertical motion. Specifically, the upper body part 142 may include an accommodation space that allows the vertical movement of the cylinder 142a based on the control operation of the solenoid valve 141 . The accommodating space may include a second insulating material 142b provided along the circumference of the outer peripheral surface of the cylinder 142a. That is, the second insulating material 142b is provided through a cylindrical shape having a hole in the center, and a shape surrounding the outer circumferential surface of the cylinder 142a may also be provided inside the accommodation space of the upper body part 142 . The chiller system 1 of the present disclosure may be a cooling system for maintaining the cooling target 10 at a cryogenic temperature. Accordingly, in order to prevent a decrease in efficiency due to the effect of low temperature, the second insulating material 142b may be provided in a portion of the inner accommodation space of the upper body part 142 . This can prevent a decrease in efficiency at cryogenic temperatures.

One end of the upper body part 142 may be provided with a lower body part 143 connected thereto. In this case, at least a portion of each body portion is formed to be penetrated, and the cylinder 142a provided in the upper body portion 142 and the poppet 144 provided in the lower body portion 143 may be connected through the through space. .

The cylinder 142a may perform a vertical motion based on the control operation of the solenoid valve 141 . For example, when the solenoid valve 141 receives a current signal (ie, a current signal above a predetermined threshold) that the temperature of the fluid at a specific location has risen above a predetermined temperature from the temperature sensor 172, the solenoid valve 141 may cause vertical motion of the cylinder 142a. For example, the cylinder 142a may move in the direction of the lower body part 143 with reference to FIG. 8 . When the cylinder 142a is moved in the lower body portion 143 direction (ie, the right direction in FIG. 8), as a force is applied to the poppet 144 connected to one end of the corresponding cylinder 142a, the circulation tank ( 110) may allow movement of the fluid.

The control valve 140 may include a lower body portion 143 that forms a passage for discharging a fluid connected to one end of the cylinder. The lower body part 143, as shown in FIG. 8, includes a fixing pin 143a, a flow path forming space 143b, a poppet 144, and a fluid inlet hole 143c and a fluid outlet hole 143d. can Here, the fixing pin 143a may be provided protruding from one end of the lower body portion 143 in order to fix the poppet 144 . That is, the fixing pin 143a may be inserted through a portion of the poppet 144 . The flow path forming space 143b may be secured according to the movement of the poppet 144 with respect to the fixing pin 143a. When the flow path forming space 143b is secured, the fluid may be introduced through the fluid inlet hole 143c, and the fluid may be discharged through the fluid outlet hole 143d. In other words, when the flow path forming space 143b is not secured, the fluid cannot be moved. The poppet 144 is connected to one end of the cylinder 142a and vertically moves in the same direction as the cylinder 142a so that the flow path forming space 143b may form a payload. As shown in FIG. 8 , the poppet 144 may include a fluid barrier 144a, a side hole 144b, a center hole 144c, and a poppet spring 144d. The center hole 144c may be a hole into which the fixing pin 143a is fitted. The side hole 144b is formed by penetrating the poppet 144 from one direction to the corresponding opposite direction, and may be a hole for discharging a fluid flowing therein. For example, when the fluid enters the inside (eg, the central hole) of the poppet 144 in the process of vertical (or left and right) movement of the poppet 144 , an error in the vertical operation for forming the flow path discharge space may be caused. Accordingly, it is possible to improve the stability of the device by securing the side hole 144b for discharging the fluid penetrating therein. The poppet 144 may be provided, for example, by using a material that minimizes thermal expansion and thermal contraction caused by a fluid, and has improved friction durability by maintaining self-lubrication. Additionally, the poppet 144 may be made of a material excellent in abrasion resistance, impact resistance and corrosion resistance, and thus deformation due to continuous impact may be minimized.

For example, when the cylinder 142a is moved in the direction of the lower body 143 by the control operation of the solenoid valve 141, the poppet 144 connected to the cylinder 142a is pushed in the same direction and the flow path forming space 143b ) through which the euro can be secured. That is, the cylinder 142a moves based on the control signal of the solenoid valve 141, and the fluid blocking jaw 144a of the poppet 144 connected to the cylinder 142a is pushed in the same direction to form the flow path space 143b. A flow path is secured, and the fluid can be moved through the secured flow path. That is, when the flow path discharge space is secured according to the movement of the poppet 144 , the fluid may be discharged through the fluid input hole 143c , the flow path forming space 143b , and the fluid discharge hole 143d in order. In one embodiment, the direction in which the fluid inlet hole 143c is provided may be in the direction of the heat exchanger 200 and the direction in which the fluid discharge hole 143d is provided may be in the direction of the circulation tank 110 . In addition, after the control operation of the solenoid valve 141, the poppet 144 is moved in the cylinder 142a direction through the restoring force of the poppet spring 144d provided between the poppet 144 and the lower body part 143, Accordingly, the flow of the fluid is blocked by the fluid blocking step 144a.

According to an embodiment of the present disclosure, the fluid discharge pipe 170 may include a temperature sensor 172 that measures the temperature of the discharged fluid. The temperature sensor 172 may be provided in the fluid discharge pipe 170 to measure the temperature of the discharged fluid. Measuring the temperature of the discharged fluid may be for detecting whether the temperature of the fluid discharged from the circulation tank 110 is an appropriate temperature for cooling the cooling target 10 . Accordingly, the fluid circulation unit 100 of the present disclosure may be characterized in that the operation of the control valve 140 is controlled according to the value measured by the temperature sensor 172 .

As described above, the control valve 140 may further improve the efficiency of the chiller system 1 by determining or controlling the amount of low-temperature fluid supplied to the circulation tank 110 . In detail, the fluid supplied to the cooling target 10 may have a higher temperature than the fluid discharged from the circulation tank 110 during the circulation of the cooling target 10 . Accordingly, the control valve 140 circulates by increasing the amount of low-temperature fluid supplied from the heat exchanger 200 to the circulation tank 110 when the temperature rises from the first based on the temperature measured by the temperature sensor 172 . It is possible to change the fluid stored in the tank 110 to a lower temperature. Accordingly, it is possible to cool the cooling target 10 through a uniform cooling degree.

According to an embodiment of the present disclosure, the fluid circulation unit 100 may include a heater 150 for controlling the temperature of the fluid inside the circulation tank 110 . For example, the heater 150 may be characterized in that it is provided inside the circulation tank 110 as shown in FIGS. 4 and 5 . To this end, at least a portion of the circulation tank 110 may be provided with a heater seating part 114 for fixing the heater 150 . That is, the heater 150 may be seated in the circulation tank 110 through the heater seating part 114 .

The heater 150 of the present disclosure may be operated based on the temperature of the fluid measured by the temperature sensor 172 . That is, the heater 150 may be characterized in that it adjusts the temperature of the fluid stored in the circulation tank 110 based on the temperature of the fluid supplied to the cooling target 10 . For example, when the temperature of the fluid measured by the temperature sensor 172 located in the fluid discharge pipe 170 is excessively low, the heater may operate to increase the temperature of the fluid stored in the circulation tank 110 . Accordingly, it is possible to cool the cooling target 10 through a uniform cooling degree.

According to an embodiment of the present disclosure, the fluid circulation unit 100 may include a filter 160 provided at the front end of the pump 120 to filter the fluid. The filter 160 may be provided inside the circulation tank 110 , and serves to filter the fluid moving to the pump 120 , thereby providing an effect of improving the stability of the device. The filter 160 may be mesh-changed according to, for example, the dynamic viscosity or properties of the fluid used.

As described above, the fluid circulation unit 100 of the present disclosure provides the core components (eg, filters, pumps, temperature sensors, relief valves, control valves and heaters) required for cryogenic implementation and temperature control to the circulation tank 110 . By implementing it so that it can be provided, the size of the device can be minimized. In addition, by simultaneously performing circulation to the cooling target 10 and the heat exchanger 200 through a single pump, the efficiency of the circulation system, such as maximizing energy efficiency and minimizing the size of the device at the same time to improve dimensional efficiency can provide a maximizing effect. In addition, by optimizing the circulation flow of the fluid, it is possible to provide the effect of reducing energy efficiency and reducing equipment costs.

According to an embodiment of the present disclosure, the fluid circulation unit 100 may further include a lower tank 190 for replenishing the fluid to the circulation tank 110 . The lower tank 190 may be located on the lower side of the circulation tank 110 , and when the fluid stored in the circulation tank 110 is insufficient, it may serve as a storage for storing additional fluid in order to supplement it.

According to the embodiment, each of the circulation tank 110 and the lower tank 190 may have a water level check unit 113 and a water level check tube 193 for checking the level of the fluid, respectively. For example, by checking the water level through the water level check unit 113 , the refill pump 191 may be operated to replenish the fluid into the circulation tank 110 . Specifically, when the refill pump 191 is operated, the fluid stored in the lower tank 190 may be supplied to the circulation tank 110 through the pump connection pipe 192, the refill pump 191 and the upper supply pipe 194. there is. That is, the fluid replenishment of the circulation tank 110 through the lower tank 190 and the refill pump 191 and the pipes connecting them (that is, the pump connection pipe and the upper supply pipe) is quickly and easily made to improve the convenience of work. can

According to an embodiment of the present disclosure, the fluid circulation unit 100 is provided in plurality, and the fluid discharged from each fluid circulation unit exchanges heat with the refrigerant pipe 210 provided in the heat exchanger 200 at the same time. can be done with As a specific example, three fluid circulation units 100 of the present disclosure may be provided, and the three fluid circulation units 100 may simultaneously exchange heat with one refrigerant pipe 210 .

Above, although embodiments of the present disclosure have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present disclosure pertains will realize that the present disclosure may be embodied in other specific forms without changing the technical spirit or essential features thereof. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

The specific implementations described in the present disclosure are only examples, and do not limit the scope of the present disclosure in any way. For brevity of the specification, descriptions of conventional electronic components, control systems, software, and other functional aspects of the systems may be omitted. In addition, the connection or connection members of the lines between the components shown in the drawings illustratively represent functional connections and/or physical or circuit connections, and in an actual device, various functional connections, physical connections that are replaceable or additional may be referred to as connections, or circuit connections. In addition, unless there is a specific reference such as "essential", "importantly", etc., it may not be a necessary component for the application of the present invention.

It is to be understood that the specific order or hierarchy of steps in the presented processes is an example of exemplary approaches. Based on design priorities, it is to be understood that the specific order or hierarchy of steps in the processes may be rearranged within the scope of the present disclosure. The appended method claims present elements of the various steps in a sample order, but are not meant to be limited to the specific order or hierarchy presented.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the present disclosure. Thus, the present disclosure is not intended to be limited to the embodiments presented herein, but is to be construed in the widest scope consistent with the principles and novel features presented herein.

1: chiller system 10: cooling target
100: fluid circulation unit 110: circulation tank
111: fluid refill pipe 112: water level control pipe
113: water level check part 114: heater seating part
120: pump 121: first housing
121a: input hole 121b: tube 1
121c: Helico Gear 121d: Section 2
121e: discharge hole 122: second housing
122a: axis of rotation 122b: first insulating material
123: motor 130: relief valve
131: pressure discharge hole 132: pressure blocking membrane
133: pressure discharge passage 134: relief spring
135: support surface 140: control valve
141: solenoid valve 142: upper body part
142a: cylinder 142b: second insulating material
143: lower body portion 143a: fixing pin
143b: flow path forming space 143c: fluid inlet hole
143d: fluid discharge hole 144: poppet
144a: fluid barrier 144b: side hole
144c: central hole 144d: poppet spring
150: heater 160: filter
170: fluid discharge pipe 171: branch part
172: temperature sensor 173: first supply pipe
174: second supply pipe 180: fluid inlet pipe
181: first inflow pipe 182: second inflow pipe
190: lower tank 191: refill pump
192: pump connection pipe 193: water level check pipe
194: upper supply pipe 200: heat exchanger
210: refrigerant pipe 300: cooling unit

Claims (10)

a fluid circulation unit for supplying a fluid to the cooling target through the first supply pipe;
a cooling unit for cooling and circulating the refrigerant; and
a heat exchanger for exchanging a fluid with the refrigerant supplied from the cooling unit;
including,
The fluid supplied to the cooling target is recovered to the fluid circulation unit through a first inlet pipe, and at least a portion of the fluid discharged from the fluid circulation unit is branched from the first supply pipe according to the temperature of the fluid discharged from the second supply pipe. It is characterized in that it is supplied to the heat exchanger through
The fluid circulation unit,
a circulation tank for storing the fluid therein;
a pump for generating a flow of fluid; and
a relief valve for supplying at least a portion of the discharged fluid to the circulation tank according to the pressure of the fluid discharged from the pump;
containing,
chiller system.
The method of claim 1,
The fluid circulation unit,
a control valve for controlling the amount of fluid supplied from the heat exchanger to the circulation tank;
a fluid discharge pipe for discharging the fluid stored in the circulation tank; and
a fluid inlet pipe for introducing a fluid into the circulation tank;
further comprising,
chiller system.
3. The method of claim 2,
The fluid discharge pipe,
a temperature sensor for measuring the temperature of the discharged fluid; and
a branching part through which the discharged fluid is divided;
further comprising,
characterized in that the operation of the control valve is controlled according to the value measured by the temperature sensor,
chiller system.
4. The method of claim 3,
The fluid inlet pipe,
a second inlet pipe connected to the heat exchanger;
further comprising,
The fluid flowing in from the second inlet pipe is characterized in that the amount introduced into the circulation tank through the control valve by a set amount,
chiller system.
4. The method of claim 3,
The relief valve is
It is provided between the temperature sensor and the pump, characterized in that the fluid above a set pressure is discharged to the circulation tank,
chiller system.
3. The method of claim 2,
The fluid circulation unit,
a heater for controlling the temperature of the fluid inside the circulation tank;
a filter provided at the front end of the pump to filter the fluid; and
a lower tank for replenishing the fluid into the circulation tank;
further comprising,
chiller system.
7. The method of claim 6,
The circulation tank is
a fluid refill pipe to which a fluid is supplied from the outside; and
a water level control pipe for adjusting the level of the fluid inside the circulation tank;
further comprising,
The fluid introduced into the water level control pipe is characterized in that it is directed to the lower tank,
chiller system.
3. The method of claim 2,
The pump is
A fluid flow is generated by a suction force caused by mutual rotation between a plurality of helico gears, wherein at least one of the plurality of helico gears is coupled and connected to share a central axis of rotation with a motor,
chiller system.

3. The method of claim 2,
The control valve is
a solenoid valve that controls the operation;
an upper body portion including an accommodating space allowing vertical movement of the cylinder based on the control operation of the solenoid valve; and
a lower body part connected to one end of the cylinder to form a passage for discharging the fluid;
containing,
chiller system.
The method of claim 1,
The fluid circulation part is provided in plurality, characterized in that the fluid discharged from each fluid circulation part exchanges heat with the refrigerant pipe provided in the heat exchanger at the same time,
chiller system.

Images