KR20130073210A - Chiller system and multi chiller system - Google Patents

Abstract

PURPOSE: A chiller system is provided to easily manage a quality of cold water or cooling water flowing in the chiller system so that the maintenance timing for the chiller system can be accurately recognized. CONSTITUTION: A chiller system (300) includes a compressor (310), a condenser (320), a cooling unit (330), an expander (340), an evaporator (350), and an air conditioning unit. The compressor compresses the refrigerant. The condenser heat-exchanges the refrigerant compressed by the compressor and the cooling water, thereby condensing the refrigerant. The cooling unit includes a cooling water inflow pipe in which the cooling water flows in from the condenser and a cooling water outflow pipe in which the cooling water flows out to the condenser. The cooling unit heat-exchanges the cooling water and outdoor air, thereby cooling the cooling water. The expander expands the refrigerant condensed in the condenser. The condenser evaporates the refrigerant by heat-exchanging the refrigerant expanded by the expander and the cold water and cools the cooling water. The air conditioning unit heat-exchanges the cold water cooled by the evaporator and the air inside an air conditioning space, thereby cooling the air inside the air conditioning space.

Description

Chiller System {CHILLER SYSTEM AND MULTI CHILLER SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chiller system, and more particularly to a chiller system that can easily manage the cold or cold water quality of a chiller system and can update the operating software of the chiller system.

In general, a chiller system is a cooling device or a freezing device that supplies cold water to a cold water demand source such as an air conditioner or a freezer, and includes a compressor, a condenser, an expander, and an evaporator through which the refrigerant is circulated.

The evaporator of the chiller system is a water-refrigerant heat exchanger, which cools the cold water by heat-exchanging the refrigerant passing through the evaporator and the cold water heat-exchanged in the heat exchanger of the air conditioner or the freezer, and the condenser of the chiller system is a water-cooling heat exchanger. The refrigerant passing through the condenser and the cooling water heat-exchanged in the water cooling device are exchanged to cool the refrigerant.

Thus, since the chiller system's evaporator and condenser use water such as cold water or cooling water as a medium, when the cold water or the cooling water is contaminated, the cold water or the cooling water should be purified or replaced to improve the water quality of the cold water or the cooling water. However, in the case of the chiller system according to the prior art, it was not possible to objectively measure the water quality of the cold water or the coolant, and thus, the operator of the chiller management company or the manufacturer regularly checks the chiller system and replaces the pipe due to the water pollution of the cold water or the coolant. And pipe cleaning or cold water or cooling water purification and replacement were often performed. As a result, even though the cold water pipe or the cooling water pipe is not damaged or contaminated, unnecessary pipe replacement and pipe cleaning are executed, causing unnecessary maintenance cost of the chiller system consumer. In addition, there is a concern that the management of the cold water or the water quality of the cooling water is not carried out at an appropriate time, so that the actual heat exchanger of the evaporator or the condenser is changed and the entire system needs to be replaced.

In addition, the chiller system according to the prior art, in order to update the operating software, the operator of the chiller management company or manufacturer directly visits the chiller system is installed, open the main printed circuit board of the chiller system and then connect to the connector of the main printed circuit board. The inconvenience of having to connect the RS232 cable between the equipped RS232 port and the operator's notebook. In other words, the chiller system according to the prior art requires that the operator visits all the sites where the chiller system is installed and connects the RS232 cable one by one, thereby unnecessarily increasing the maintenance time and the maintenance cost (for example, increase in labor cost). There was a problem.

It is an object of the present invention to provide a chiller system that solves the problems of the prior art.

Specifically, it is an object of the present invention to provide a chiller system that can easily manage the cold water or the water quality of the cooling water.

Still another object of the present invention is to provide a chiller system which can easily update the operating software of the chiller system.

According to an embodiment of the present invention for solving the above problems, the present invention, a compressor for compressing the refrigerant; A condenser condensing the refrigerant by heat-exchanging the refrigerant compressed by the compressor with the cooling water; A cooling unit including a cooling water inlet tube through which the coolant flows from the condenser, and a cooling water outlet tube through which the coolant flows into the condenser, and cooling the coolant by heat-exchanging the coolant exchanged with a coolant with outdoor air; An expander to expand the refrigerant condensed in the condenser; An evaporator for evaporating the refrigerant by cooling the cold water and the refrigerant expanded in the expander to cool the cold water; And an air conditioning unit configured to cool the air in the air conditioning space by heat-exchanging the cold water cooled in the evaporator with air in the air conditioning space, wherein the cooling unit is provided in at least one of the cooling water inlet pipe and the cooling water outlet pipe. It is possible to provide a chiller system comprising a first water quality sensing unit for detecting the water quality of the cooling water.

In addition, preferably, the first water quality sensing unit is installed in the cooling water outlet pipe.

Preferably, the first water quality sensing unit may include at least one of an impurity detection sensor for detecting impurities present in the cooling water and a turbidity sensor for detecting turbidity of the cooling water.

Preferably, the chiller system includes a control unit and a display unit for controlling the compressor, the condenser, the cooling unit, the expansion valve, the evaporator, and the air conditioning unit, and the control unit includes the first water quality sensing unit. When the water pollution is detected from the control unit so that the information on the water pollution is displayed on the display unit.

Also, preferably, the control unit is required to improve the quality of the cooling water when the turbidity of the cooling water is detected from the first water quality sensing unit more than a predetermined turbidity and the impurity content of the cooling water is more than the predetermined ratio. The display unit is controlled to be displayed on the display unit.

Preferably, the air conditioning unit includes a cold water inlet tube through which cold water flows from the evaporator to the air conditioning unit, and a cold water outlet tube through which cold water flows from the air conditioning unit to the evaporator. And at least one of the cold water outlet pipes includes a second water quality sensing unit configured to sense the quality of the cold water.

Preferably, the chiller system includes a control unit and a display unit for controlling the compressor, the condenser, the cooling unit, the expansion valve, the evaporator, and the air conditioning unit, and the control unit includes the second water quality sensing unit. When the water pollution is detected from the control unit so that the information on the water pollution is displayed on the display unit.

The second water quality sensing unit may include at least one of an impurity sensor for detecting impurities present in the coolant and a turbidity sensor for detecting turbidity of the coolant.

According to another embodiment of the present invention for solving the above problems, the present invention is a chiller system including a compressor and an expansion valve, a plurality of condensers for condensing the refrigerant by heat-exchanging the refrigerant and the cooling water compressed in the compressor ; A plurality of evaporators configured to evaporate the refrigerant by cooling the cold water and the refrigerant expanded in the expander to cool the cold water; A plurality of air conditioning units for cooling the air in the air conditioning space by heat-exchanging the cold water cooled in the evaporator with air in the air conditioning space; And a central control unit controlling the plurality of condensers, the plurality of evaporators, and the plurality of air conditioning units, wherein the central control unit includes information on water pollution of the cooling water of the condenser and cold water pollution of the evaporator. Detect the information about the information provided to the user, the central control unit may provide a chiller system, characterized in that for modifying and modifying the operating software of the condenser, the evaporator and the air conditioning unit through a wireless communication network. .

Further, preferably, the central control unit is connected to the chiller management website by wire and wireless communication network, and the operating software downloaded from the chiller management website is connected to each condenser, each evaporator and each via a wireless communication network. It is characterized in that the update to the air conditioning unit.

In addition, the central control unit is characterized in that for storing information on the update history of the operating software in the condenser, the evaporator and the air conditioning unit.

In addition, preferably, the condenser, the evaporator and the air conditioning unit are characterized in that it comprises a communication module capable of wireless communication with the communication module of the central control unit.

Further, preferably, the condenser, the evaporator and the communication module of the air conditioning unit and the communication module of the central control unit may include at least one communication module of a BLUETOOTH communication module, a WIFI communication module, a 3G communication module, and a 4G communication module. It is characterized by including.

In addition, the condenser, the evaporator and the installation space of the air conditioning unit is characterized in that the wireless access point (AP) connected to the central control unit and a wireless communication network is provided.

Preferably, the wireless communication network between the condenser, the evaporator and the air conditioning unit and the central control unit is a network to which an internet protocol address is assigned by IPV6 (Internet Protocol Version 6).

Preferably, each of the cooling water outlet pipes through which the coolant flows out of the condenser is provided with a first water quality sensing unit for detecting information on the water pollution of the cooling water, and each of the cold water outlet pipes through which the cold water flows out from the evaporator includes: Characterized in that the second water quality sensing unit for detecting information about water pollution.

In addition, preferably, the first water quality sensing unit and the second water quality sensing unit may include at least one or more of an impurity sensor for detecting impurities present in the cooling water and a turbidity sensor for detecting turbidity of the cooling water. .

Also, preferably, the central control unit may provide information about a condenser or an evaporator requiring cold water or cooling water quality improvement based on information on water pollution detected from the first water quality sensing unit or the second water quality sensing unit. It is characterized by providing.

Also, preferably, the condenser and the evaporator include a display unit, and the central control unit may be configured to determine whether the cold water or the coolant is based on information on the water pollution detected from the first water quality sensor or the second water quality sensor. And controlling the display unit so that information on the need for water quality improvement is displayed on the display unit.

Further, preferably, the central control unit is connected to chiller management website through wired and wireless communication networks, based on the information on the water pollution detected from the first water quality sensing unit or the second water quality sensing unit. Characterized in that the information on the need to improve the water quality of the cooling water is characterized in that it is transmitted to the mobile terminal of the user or administrator.

According to the above problem solving means, the present invention can easily manage the water quality of the cold water or cooling water flowing in the chiller system, the user or the administrator when the maintenance of the chiller system due to the degree of water pollution and water pollution of the cold or cooling water Make sure you recognize it correctly. As a result, the present invention can reduce maintenance costs incurred due to improper maintenance work, thereby reducing the overall maintenance cost of the chiller system.

In addition, the present invention does not need to move to the place where the chiller system is installed in order to update the operating software of the chiller system, thereby facilitating the updating of the operating software of the chiller system. Therefore, the present invention can improve the operating software update operation speed of the chiller system, and it is possible to reduce the chiller management labor cost since it is unnecessary for a large number of workers to visit the chiller system, thereby reducing the maintenance cost of the chiller system as a whole. .

1 is a schematic diagram of a multi-chiller system according to an embodiment of the present invention.
2 is a schematic block diagram of a multi-chiller system according to an embodiment of the present invention.
3 is a schematic structural diagram of a chiller system according to an embodiment of the present invention.
4 is a schematic diagram of a condenser and a cooling unit according to an embodiment of the present invention.
5 is a schematic configuration diagram of an evaporator and an air conditioning unit according to an embodiment of the present invention.

Hereinafter, a chiller system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

1 is a schematic configuration diagram of a multi-chiller system according to an embodiment of the present invention, Figure 2 is a schematic block diagram of a multi-chiller system according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention 4 is a schematic configuration diagram of a chiller system according to an embodiment, and FIG. 4 is a schematic configuration diagram of a condenser and a cooling unit according to an embodiment of the present invention, and FIG. 5 is an evaporator and air conditioning unit according to an embodiment of the present invention. It is a schematic configuration diagram of the.

First, FIG. 1 is a schematic block diagram of a multi chiller system 1000 according to an embodiment of the present invention, and FIG. 2 is a schematic block diagram of a multi chiller system 1000 according to an embodiment of the present invention. 2 is a schematic block diagram of a chiller system 300 and a central control unit 100 of a plurality of chiller systems 300.

As shown in FIG. 1, the multi chiller system 1000 according to an exemplary embodiment includes a plurality of chiller systems 300 and a central control unit 100 for controlling the plurality of chiller systems 300. do.

1 and 3, the chiller system 300 includes a compressor 310 for compressing a refrigerant, a condenser 320 for condensing the refrigerant by heat-exchanging the refrigerant and the cooling water compressed by the compressor 310. A heat exchanger for cooling the coolant by heat-exchanging the coolant with outdoor air and an outdoor air to cool the coolant, an expander for expanding the refrigerant condensed in the condenser 320, and a refrigerant and cold water expanded in the expander. An evaporator 350 for cooling the cold water by evaporating the refrigerant; It includes; and cold water demand unit that is subject to heat exchange with the cold water cooled in the evaporator (350).

As illustrated in FIG. 1, the cold water demand part may be an air conditioning unit 360 that cools the air in the air conditioning space by heat-exchanging the cold water with the air in the air conditioning space. However, this is exemplary and the present invention is not limited thereto.

The cooling apparatus includes a coolant inlet tube 321 through which the coolant flows from the condenser 320, a coolant outlet tube 323 through which the coolant flows out of the condenser 320, and a first water quality that senses the quality of the coolant. It includes a sensing unit.

The first water quality sensing unit may be provided in at least one of the cooling water inlet tube 321 and the cooling water outlet tube 323, and preferably, the first water quality sensing unit may be installed in the cooling water outlet tube 323.

In addition, the air conditioning unit 360 is a cold water inlet pipe 352 through which cold water flows from the evaporator 350 into the air conditioning unit 360 and cold water flows from the air conditioning unit 360 to the evaporator 350. Cold water outlet pipe 354, and the second water quality sensing unit for sensing the water quality of the cold water.

The second water quality sensing unit may be provided in at least one of the cold water inlet tube 352 and the cold water outlet tube 354, and preferably, the second water quality sensing unit may be installed in the cold water outlet tube 354.

As shown in FIG. 2, the central control unit 100 may be a computer such as a PC or a notebook computer. The central control unit 100 may include an input unit 110 that receives an input signal of a manager of the chiller system 300. A control unit 120 generating a control signal corresponding to the input signal based on the input signal, an output unit 130 outputting a result corresponding to the control signal generated by the control unit 120, and a chiller management website. (W) includes a communication module 140 for connecting to a wired or wireless communication network.

The communication module of the central control unit 100 transmits the control signal generated in the control unit to the chiller management website W and / or receives operating software from the chiller management website W.

The operating software is software for controlling the overall operation of the chiller system 300 to control the flow of refrigerant and / or cooling water and / or cold water in the compressor 310, the condenser 320, the expansion valve 340, and the evaporator 350. Program to control. The operating software includes, for example, operating temperature range data of chiller system 300, operating algorithm programs, chiller system 300 scheduling programs, and the like. However, this is exemplary and the present invention is not limited thereto.

The chiller system 300 includes a compressor 310, an input unit 301 for receiving an input signal of an administrator or a user from the chiller system 300, and a wireless communication method with the communication module 140 of the central control unit 100. A communication module 303 which receives a control signal of the central control unit 100 and transmits the detection signal to the central control unit 100, and the input signal and / or the central control unit 100. A controller 304 for generating a control signal for controlling the condenser 320, the expansion valve 340, the cooling unit 330, the evaporator 350, and the air conditioning unit 360 based on the control signal of the chiller system. Sensing unit 302 for detecting the state (for example, flow rate, flow rate, pollution degree, etc.) of the various media (for example, refrigerant, cooling water, cold water, etc.) in the 300 and transmits a detection signal to the controller And a display unit 306 for displaying information on water pollution based on the detection signal. It includes.

The chiller system 300 includes a communication module for transmitting a control signal of the central control unit 100 to a control unit that controls the devices included in the chiller system 300 as a whole, and at the same time of the chiller system 300 The compressor 310, the condenser 320, the evaporator 350, the expansion valve 340, the cooling unit 330, and the air conditioning unit 360 also communicate with each other, which enables wireless communication with the communication module of the central control unit 100. Modules may be provided.

In addition, the compressor 310, the condenser 320, the evaporator 350, the expansion valve 340, the cooling unit 330, and the air conditioning unit 360 of the chiller system 300 may include a display unit.

Hereinafter, a process of controlling the chiller system 300 and / or various devices included in the chiller system 300 by the central control unit 100 will be described.

The central control unit 100 may provide information on the water pollution of the cooling water of the condenser 320 and / or the evaporator 350 based on the quality of the cold or cooling water detected by the first water quality sensing unit and / or the second water quality sensing unit. It detects the information about the water pollution of cold water and provides it to the administrator or user. Information about the water pollution may be displayed on the display unit, and may be transmitted to the user through an audio output unit, and at the same time, the central control unit 100 may communicate with the condenser 320, the evaporator 350, and the like through a wireless communication network. The operating software of the air conditioning unit 360 can be modified and changed.

The central control unit 100 is connected to the chiller management website W by wire and wireless communication networks. For this reason, the central control unit 100 can download the operating software for each version from the chiller management website (W).

The communication module of the central control unit 100 may be a communication module of the chiller system 300 and / or a compressor 310, an evaporator 350, an expansion valve 340, a cooling unit 330, an air conditioning unit 360, and The communication module mounted on the compressor 310 is connected to a wireless communication network, and the central control unit 100 has its own communication module, a wireless communication network, a communication module of the chiller system 300, and / or a compressor 310, an evaporator. The operating system downloaded to the central control unit 100 through the communication module mounted on the 350, the expansion valve 340, the cooling unit 330, the air conditioning unit 360, and the compressor 310, the chiller system 300. And / or updates to each condenser 320, compressor 310, evaporator 350, expansion valve 340, cooling unit 330, air conditioning unit 360 and compressor 310.

At this time, a wireless communication network connecting the communication module of the central control unit 100 and the communication module of the chiller system 300 and / or the communication module of the central control unit 100 and the compressor 310, the evaporator 350. The wireless communication network connecting the expansion module 340, the cooling unit 330, the air conditioning unit 360 and the communication module mounted on the compressor 310 is at least one of a BLUETOOTH network, a WIFI network, a 3G network, and a 4G network. Is a network of.

In order to use such a wireless communication network, communication of the compressor 310, the condenser 320, the evaporator 350, the cooling unit 330, the expansion valve 340 and the air conditioning unit 360 of the chiller system 300 The module and the communication module of the central control unit 100 include at least one communication module of a BLUETOOTH communication module, a WIFI communication module, a 3G communication module and a 4G communication module.

In addition, the wireless communication network between the compressor 310, the condenser 320, the expansion valve 340, the evaporator 350 and the air conditioning unit 360 and the central control unit 100 and / or chiller system 300 Wireless communication network between the central control unit 100 is preferably a network assigned an Internet protocol address by Internet Protocol Version 6 (IPV6). Furthermore, it is preferable that all of the plurality of chiller systems 300 included in the multi-chiller system 1000 and each of the devices included in the removal system are assigned an Internet protocol address by IPV6 (Internet Protocol Version 6).

The IPV6 address is composed of a 128-bit system, represented by eight 16-bit fields of four 16-bit hexadecimal digits, and separated by colons for every 16-bit field. For example, the Internet protocol address of the central control unit 100 assigned by IPV6 is 2001: 0230: abcd: ffff: 0000: 0000: ffff: 1111, and the internet protocol address of the evaporator 350 is 2001: 0230: It may be abcd: ffff: 0000: 0000: ffff: abcd.

By using IPV6 having an infinite number of Internet protocol addresses in this way, it is possible to assign a unique Internet protocol address to each chiller system 300 and the devices included in each chiller system 300, and thus the central control unit. 100 may not only directly control or monitor each chiller system 300 but also devices included in each central control unit 100, as well as each chiller system 300, as well as each central control unit ( It is possible to change and modify (eg, update) operating software and various programs input to devices included in 100).

As described above, the central control unit 100 is connected to the chiller system 300 and / or various devices included in the chiller system 300 in a wireless communication network, and the chiller system 300 through the wireless communication network. And / or by updating the operating software of the various devices included in the chiller system 300, the present invention does not need to be moved to the place where the chiller system 300 is installed in order to update the operating software of the chiller system 300. This can facilitate working software update of the chiller system 300. Therefore, the present invention can improve the operation software update operation speed of the chiller system 300, and because the number of workers who visit the chiller system 300 is unnecessary, the chiller management labor cost can be reduced, and the chiller system 300 as a whole. Reduce maintenance costs

In addition, when the update of the operating software is executed several times, the central control unit 100 stores information on the update history of the operating software in the chiller system 300 and / or various devices included in the chiller system 300. And display information on the update history of the operating software. The information on the update history of the operating software may include, for example, an update date, a history, an ID of an update executor, an updater version name, and an update content. In this way, by saving and displaying the update history of the operating software, subsequent updaters can easily determine if an update of the current operating software is required and determine whether an update of the appropriate or inappropriate operating software has been carried out. .

Preferably, in the installation space of the various devices included in the chiller system 300, for example, the condenser 320, the evaporator 350 and the air conditioning unit 360, the central control unit 100 and the wireless communication network Wireless access point 200 (AP) may be provided. Thus, by providing a wireless access point in the installation space of the various devices included in the chiller system 300, between the central control unit 100 and the various devices included in the chiller system 300 and / or chiller system 300. Faster and smoother data transmission through wireless communication of the wireless communication between the central control unit 100 and the chiller system 300 and / or various devices included in the chiller system 300 to prevent disconnection. Can be.

In addition, the central control unit 100 is a condenser 320 or evaporator 350 that needs to improve the water quality of the cold or cooling water based on the information on the water pollution detected from the first water quality sensing unit and / or the second water quality sensing unit. Information).

In this case, preferably, the first water quality sensing unit and the second water quality sensing unit are impurity detection sensors 325 and 356 for detecting impurities present in the cooling water and turbidity sensors 327 and 358 for detecting turbidity of the cooling water. It may include at least one of).

That is, the central control unit 100 includes a plurality of first water quality sensing units and / or a plurality of evaporators 350 and a plurality of air conditioning units 360 installed between the plurality of condensers 320 and the plurality of cooling units 330. Monitoring in real time the water quality of the cooling water and / or cold water through a plurality of second water quality sensing unit installed between the), the central control unit 100 between the plurality of condenser 320 and the plurality of cooling unit 330 The turbidity of the cooling water is detected to be greater than or equal to the predetermined turbidity from the first water quality sensing unit installed between the specific condenser 320 and the specific cooling unit 330 among the plurality of first water quality sensing units installed in the first water quality sensing unit and / or the concentration of impurities in the cooling water. Is detected to be greater than or equal to a preset ratio, and / or the specific evaporator 350 of the plurality of second water quality sensing units installed between the plurality of evaporators 350 and the plurality of air conditioning units 360. When the turbidity of the cooling water is detected from the second water quality sensing unit provided between the specific air conditioning unit 360 or more than the predetermined turbidity and / or the concentration of impurities in the cooling water is more than the predetermined ratio, the central control unit ( 100 is information on the need to improve the water quality of the cooling water flowing through the specific condenser 320 and the specific cooling unit 330 and information about the location of the specific condenser 320 and the specific cooling unit 330 and / or Display unit and the information on the need for improving the water quality of the cold water flowing through the specific evaporator 350 and the specific air conditioning unit 360 and the position of the specific evaporator 350 and the specific air conditioning unit 360 And / or to the user and / or administrator via the sound output.

Accordingly, the present invention allows the user and / or the manager to easily recognize the condenser 320, the evaporator 350, the cooling unit 330, the air conditioning unit 360 that need to improve the water quality of the cold water and / or cooling water. By doing so, in the multi-chiller system 1000 including the plurality of chiller systems 300, there is no need to periodically replace or purify the entire cold water and / or the whole cooling water, and to clean and replace the entire pipe. It is possible to efficiently maintain the chiller system 300 and at the same time reduce the maintenance cost of the chiller system 300.

Preferably, the central control unit 100 is connected to the chiller management website (W) by wire and wireless communication network based on the information on the water pollution detected from the first water quality sensing unit or the second water quality sensing unit. The information on the need for improving the quality of the cold water or the coolant can be transmitted as a message to the mobile terminal of the user or administrator. As a result, a user and / or an administrator may make maintenance of the chiller system 300 easier and more convenient, and may enable timely maintenance work of the chiller system 300.

3 is a schematic configuration diagram of a chiller system 300 according to an embodiment of the present invention, Figure 4 is a schematic configuration diagram of a condenser 320 and a cooling unit 330 according to an embodiment of the present invention. 5 is a schematic configuration diagram of an evaporator 350 and an air conditioning unit 360 according to an embodiment of the present invention.

As shown in FIG. 3, the chiller system 300 according to an embodiment of the present invention condenses the refrigerant by exchanging a compressor 310 for compressing the refrigerant, and a refrigerant and the cooling water compressed by the compressor 310. The condenser 320, a cooling unit 330 for heat-exchanging the coolant and the outdoor air heat exchanged with the refrigerant to cool the cooling water, an expander for expanding the refrigerant condensed in the condenser 320, the expanded in the expander An evaporator 350 for evaporating the refrigerant by cooling the refrigerant and cold water and cooling the cold water, and an air conditioning unit 360 for cooling the air in the air conditioning space by heat-exchanging the cold water cooled in the evaporator 350 and the air in the air conditioning space. And a control unit and a display unit for controlling the compressor 310, the condenser 320, the cooling unit 330, the expansion valve 340, the evaporator 350, and the air conditioning unit 360. .

The compressor 310 compresses the refrigerant evaporated in the evaporator 350, and the compressor 310 may be configured as one of a rotary compressor 310, a scroll compressor 310, and a screw compressor 310. 310 or an inverter compressor 310. In addition, the compressor 310 may be a multi-stage compressor 310 that compresses the refrigerant in multiple stages.

The condenser 320 condenses the refrigerant by releasing heat from the refrigerant compressed by the compressor 310, and heat-exchanges the refrigerant with the cooling water supplied from the cooling unit 330 to condense the refrigerant.

To this end, the condenser 320 may be configured, for example, of a shell-tube type heat exchanger. In this case, a condensation space in which the refrigerant is condensed is formed in the shell of the condenser 320, and a cooling water tube through which the coolant passes is disposed in the condensation space. The coolant tube is connected to the coolant inlet 321 and the coolant outlet 323 of the cooling unit 330 to allow the coolant to flow.

As shown in FIGS. 3 and 4, the cooling unit 330 cools the cooling water absorbing heat from the refrigerant of the condenser 320, and the cooling unit 330 cools the cooling water from the condenser 320. Water quality of the cooling water is provided in at least one of the inlet pipe 321, the coolant outlet pipe 323 through which the coolant flows into the condenser 320, and the coolant inlet pipe 321 and the coolant outlet pipe 323. It includes a first water quality sensing unit for sensing.

As shown in FIG. 3, the cooling unit 330 may be configured as a cooling tower, for example, to cool the cooling water absorbing heat from the refrigerant of the condenser 320. At this time, the cooling unit 330 is a main body portion 331 having an air discharge port 332 formed on the upper side and an air suction hole 334 formed on the side, and the air discharge port 332 is installed in the outside air to the main body Blowing fan 333 for forcibly discharging the outside air to the air outlet after the forced suction to the inside and the cooling water installed in the upper portion of the main body portion heat exchanged in the condenser 320 through the injection unit 321a Cooling water inlet tube 321 for injecting toward the lower portion of the main body portion, the coolant sprayed from the coolant inlet tube 321 is collected by cooling the heat exchange with the outside air and the coolant collector 335 It is connected to the cooling water outlet pipe 323 for supplying the cooling water to the condenser 320 and a first water quality sensing unit installed in the cooling water outlet pipe 323.

At this time, preferably, the first water quality sensing unit may include an impurity sensor 325 for detecting impurities present in the cooling water and a turbidity sensor 327 for detecting turbidity of the cooling water. In this case, the impurities may be, for example, organic matter that grows in the cooling water, yellow sand, dust, or acidic substances or salts that corrode piping.

The expansion valve 340 expands the refrigerant condensed in the condenser 320, and the expansion valve 340 may be a capillary tube or an electronic expansion valve 340 (EEV).

The evaporator 350 supplies heat to the refrigerant expanded by the expansion valve 340 to evaporate the refrigerant, and heat-exchanges the refrigerant with cold water supplied from the air conditioning unit 360 to evaporate the refrigerant.

To this end, the evaporator 350 may be configured, for example, of a shell-tube type heat exchanger. In this case, an evaporation space in which the refrigerant is evaporated is formed in the shell of the evaporator 350, and a cold water tube through which cold water passes is disposed in the evaporation space. The cold water tube is connected to the cooling water inlet pipe 321 and the cooling water outlet pipe 323 connected from the air conditioning unit 360 to allow the cold water to flow. The refrigerant evaporated in this way is sucked into the inlet pipe of the compressor 310 and compressed by the compressor 310.

As shown in FIGS. 3 and 5, the air conditioning unit 360 supplies heat to the refrigerant of the evaporator 350 to exchange heat between the cooled cold water and the air in the air conditioning space, and a heat exchanger that cools the air in the air conditioning space. Cold water inlet pipe 352 through which cold water flows from the evaporator 350 to the air conditioning unit 360 and cold water outlet pipe 354 through which cold water flows from the air conditioning unit 360 to the evaporator 350. And a second water quality sensing unit provided in at least one of the cold water inlet tube 352 and the cold water outlet tube 354 to sense the quality of the cold water.

In this case, the second water quality sensing unit may include an impurity detection sensor 356 for detecting impurities present in the cooling water and a turbidity sensor 358 for detecting turbidity of the cooling water. In this case, the impurities may be, for example, organic matter that grows in the cooling water, yellow sand, dust, or acidic substances or salts that corrode piping.

The controller controls the display unit to display information on the water pollution on the display unit when water pollution is detected from the first water quality sensing unit and / or the second water quality sensing unit. That is, the controller provides the user and / or the manager with information about the water pollution of the cold water and / or information about the water pollution of the cooling water.

The controller may further include a turbidity of the cold water and / or turbidity of the cooling water from the first water quality sensing unit and / or the second water quality sensing unit and a predetermined turbidity, and a predetermined impurity content of the cold water and / or an impurity content of the cooling water. When it is detected that the abnormality is detected, the display unit is controlled such that the need for improving the cold water and / or the water quality of the cooling water is displayed on the display unit. In this case, the controller may control the sound output unit such that the need for improving the cold water and / or the water quality of the coolant is displayed as sound through the sound output unit.

According to the above, the present invention can easily manage the water quality of the cold or cooling water flowing in the chiller system, the user or administrator can accurately determine the maintenance time of the chiller system due to the degree of water pollution and water pollution of the cold or cooling water Make it recognizable. As a result, the present invention can reduce maintenance costs incurred due to improper maintenance work, thereby reducing the overall maintenance cost of the chiller system.

In addition, the present invention does not need to be moved to the place where the chiller system is installed in order to update the operating software of the chiller system, thereby facilitating the updating of the operating software of the chiller system. Therefore, the present invention can improve the operation software update operation speed of the chiller system, and it is possible to reduce the chiller management labor cost because it is unnecessary for a large number of workers to visit the chiller system can reduce the maintenance cost of the chiller system as a whole. .

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

1000: Chiller System
100: central control unit
110: input unit
120:
130:
140: Communication module
200: wireless access point
300: chiller system
301: input unit
302: sensing unit
303: communication module
304: control unit
305: output unit
306: display unit
310: Compressor
320: condenser
321: cooling water inlet pipe
323 coolant outlet
325: Impurity Detection Sensor
327: Turbidity sensor
330: cooling unit
331: main body
332: air outlet
333 blower fan
334: air intake
335: cooling water collection unit
340: expansion valve
350: evaporator
351: evaporator body
352: cold water inlet pipe
353: control unit
354 cold water outflow pipe
356: impurity detection sensor
358: Turbidity Sensor
360: air conditioning unit

Claims (20)

A compressor for compressing the refrigerant;
A condenser condensing the refrigerant by heat-exchanging the refrigerant compressed by the compressor with the cooling water;
A cooling unit including a cooling water inlet tube through which the coolant flows from the condenser, and a cooling water outlet tube through which the coolant flows into the condenser, and cooling the coolant by heat-exchanging the coolant exchanged with a coolant with outdoor air;
An expander to expand the refrigerant condensed in the condenser;
An evaporator for evaporating the refrigerant by cooling the cold water and the refrigerant expanded in the expander to cool the cold water; And
And an air conditioning unit configured to cool the air in the air conditioning space by heat-exchanging the cold water cooled in the evaporator with the air in the air conditioning space.
The cooling unit, the chiller system comprising a first water quality sensing unit provided in at least one of the cooling water inlet pipe and the cooling water outlet pipe for detecting the water quality of the cooling water. The method of claim 1,
The chiller system, characterized in that the first water quality sensing unit is installed in the cooling water outlet pipe. The method of claim 1,
The first water quality sensing unit chiller system comprising at least one of an impurity detection sensor for detecting impurities present in the cooling water and a turbidity sensor for detecting the turbidity of the cooling water. The method of claim 1,
The chiller system includes a control unit and a display unit for controlling the compressor, the condenser, the cooling unit, the expansion valve, the evaporator, the air conditioning unit,
And the controller controls the display unit to display information on the water pollution on the display unit when water pollution is detected from the first water quality sensing unit. 5. The method of claim 4,
The controller may be configured to display a necessity for improving the quality of the cooling water when the first water quality sensing unit detects that the turbidity of the cooling water is greater than or equal to a predetermined turbidity and the impurity content of the cooling water is greater than or equal to a predetermined ratio. A chiller system for controlling the display unit. The method of claim 1,
The air conditioning unit includes a cold water inlet tube through which cold water flows from the evaporator to the air conditioning unit and a cold water outlet tube through which cold water flows from the air conditioning unit to the evaporator, wherein the cold water inlet tube and the cold water outlet tube include: At least one chiller system, characterized in that the second water quality sensing unit for sensing the water quality of the cold water. The method according to claim 6,
The chiller system includes a control unit and a display unit for controlling the compressor, the condenser, the cooling unit, the expansion valve, the evaporator, the air conditioning unit,
And the controller controls the display unit to display information on the water pollution on the display unit when water pollution is detected from the second water quality sensing unit. The method of claim 7, wherein
The second water quality sensing unit chiller system comprising at least one of an impurity detection sensor for detecting impurities present in the cooling water and a turbidity sensor for detecting the turbidity of the cooling water. A chiller system comprising a compressor and an expansion valve,
A plurality of condensers condensing the refrigerant by heat-exchanging the refrigerant compressed by the compressor with the cooling water;
A plurality of evaporators configured to evaporate the refrigerant by cooling the cold water and the refrigerant expanded in the expander to cool the cold water;
A plurality of air conditioning units for cooling the air in the air conditioning space by heat-exchanging the cold water cooled in the evaporator with air in the air conditioning space; And
A central control unit for controlling the plurality of condensers, the plurality of evaporators and the plurality of air conditioning units,
The central control unit detects the information on the water pollution of the cooling water of the condenser and the information on the water pollution of the cold water of the evaporator to provide to the user,
And said central control unit modifies and modifies the operating software of said condenser, said evaporator and said air conditioning unit via a wireless communication network. 10. The method of claim 9,
The central control unit is connected to the chiller management website by wire and wireless communication network to update the operating software downloaded from the chiller management website to each condenser, each evaporator and each air conditioning unit through the wireless communication network. Chiller system, characterized in that. The method of claim 10,
The central control unit is chiller system, characterized in that for storing information on the update history of the operating software in the condenser, the evaporator and the air conditioning unit. 10. The method of claim 9,
The condenser, the evaporator and the air conditioning unit chiller system, characterized in that it comprises a communication module capable of wireless communication with the communication module of the central control unit. The method of claim 12,
The condenser, the evaporator and the communication module of the air conditioning unit and the communication module of the central control unit include at least one or more communication modules of the BLUETOOTH communication module, WIFI communication module, 3G communication module and 4G communication module. Chiller system. The method of claim 12,
The chiller system, characterized in that the installation space of the condenser, the evaporator and the air conditioning unit is provided with a wireless access point (AP) connected to the central control unit and a wireless communication network. The method of claim 12,
And said wireless communication network between said condenser, said evaporator and said air conditioner unit and said central control unit is a network assigned an internet protocol address by IPV6 (Internet Protocol Version 6). 10. The method of claim 9,
Each cooling water outlet pipe from which the coolant flows out of the condenser is provided with a first water quality sensing unit for detecting information on the water pollution of the cooling water, and each of the cold water outlet pipes from which the cold water flows from the evaporator includes information on the water pollution of the cold water. A chiller system, characterized in that provided with a second water quality sensing unit for sensing. 17. The method of claim 16,
The chiller system, wherein the first water quality sensing unit and the second water quality sensing unit include at least one of an impurity sensor for detecting impurities present in the cooling water and a turbidity sensor for detecting turbidity of the cooling water. 17. The method of claim 16,
The central control unit provides information on the condenser or evaporator requiring the improvement of the water quality of the cold or cooling water based on the information on the water pollution detected from the first water quality sensing unit or the second water quality sensing unit. Chiller system. 17. The method of claim 16,
The condenser and the evaporator includes a display unit,
The central control unit controls the display unit to display information on the necessity of improving the water quality of the cold or cooling water based on the information on the water pollution detected from the first water quality sensing unit or the second water quality sensing unit. Chiller system characterized in that. 10. The method of claim 9,
The central control unit connects to the chiller management website through wired and wireless communication networks to meet the necessity of improving the quality of the cold or cooling water based on information on the water pollution detected from the first water quality sensing unit or the second water quality sensing unit. Chiller system, characterized in that for transmitting a message to the user or administrator's mobile terminal as a message.

Images