CN211716931U - Gas-liquid separator and water chilling unit - Google Patents

Abstract

The utility model relates to an air conditioner technical field, concretely relates to vapour and liquid separator and cooling water set. The utility model discloses it is not thorough to aim at solving the refrigerant gas-liquid separation that current vapour and liquid separator exists, causes the compressor to breathe in and takes liquid to take place to damage or reduce the problem of cooling water set's refrigeration performance. Mesh for this reason, the utility model provides a pair of vapour and liquid separator and cooling water set, through set up in vapour and liquid separator's inner chamber along the baffling passageway that the direction of refrigerant import to gas vent was buckled and is extended, increased the gaseous state refrigerant and flowed the distance to the gas vent by the refrigerant import to this forms the loss to refrigerant kinetic energy, effectively reduces the velocity of flow of refrigerant, makes a small amount of liquid refrigerant that has in the gaseous state refrigerant have sufficient time and distance to subside. In addition, gaseous refrigerant and liquid refrigerant can be further separated by the resistance action and the collision action between the refrigerant and the baffling channel, so that the separation efficiency of the gas-liquid separator is greatly improved.

Description

Gas-liquid separator and water chilling unit

Technical Field

The utility model relates to an air conditioner technical field, concretely relates to vapour and liquid separator and cooling water set.

Background

The water chilling unit generally comprises a compressor, a condenser, an electronic expansion valve, an evaporator and a gas-liquid separator; the exhaust port of the compressor is connected with the refrigerant inlet of the condenser; a liquid outlet of the condenser is communicated with a refrigerant inlet of the evaporator through an electronic expansion valve, and a refrigerant outlet of the evaporator is communicated with a refrigerant inlet of the gas-liquid separator; the air suction port of the compressor is communicated with the exhaust port of the gas-liquid separator. And the evaporator is arranged indoors and is matched with the fan to form an air cooler, so that the refrigeration cycle is realized.

A cavity is arranged in a traditional gas-liquid separator, an exhaust port is formed in one end of the gas-liquid separator, and a refrigerant inlet is formed in the gas-liquid separator; after the gaseous refrigerant containing liquid enters the cavity of the gas-liquid separator from the refrigerant inlet, because of the different densities of the gas and the liquid, when the liquid flows together with the gas, the liquid is subjected to the action of gravity to generate a downward speed, and the gas still flows towards the original direction, namely the liquid and the gas have the tendency of being separated in a gravity field, and the downward liquid is attached to the wall surface.

However, when the suction pressure of the compressor is high, the liquid refrigerant in the gas-liquid separator is not completely separated, which causes damage to the suction liquid of the compressor or reduces the refrigeration performance of the water chilling unit.

Accordingly, there is a need in the art for a new gas-liquid separator and water chiller to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem among the prior art, when the suction pressure when the compressor exists for solving current vapour and liquid separator is great, the liquid refrigerant separation in the vapour and liquid separator is not thorough, causes the compressor to breathe in and takes liquid to take place to damage or reduce the problem of cooling water set's refrigeration performance, the utility model provides a vapour and liquid separator and cooling water set.

The utility model provides a gas-liquid separator, which comprises a body; a cavity is formed in the body, an exhaust port is formed at one end of the body, and a refrigerant inlet is formed in the body; the exhaust port and the refrigerant inlet are respectively communicated with the cavity; and a baffling channel is formed in the cavity and bends and extends along the direction from the refrigerant inlet to the exhaust port.

As the utility model provides an above-mentioned gas-liquid separator's an preferred technical scheme, gas-liquid separator still includes a plurality of guide plates, and is a plurality of the guide plate respectively with this body inner wall connection encloses into the baffling passageway.

As an optimized technical solution of the above-mentioned gas-liquid separator provided by the present invention, the baffling channel is spiral or S-shaped.

As an optimized technical solution of the above-mentioned gas-liquid separator provided by the present invention, the refrigerant inlet is located between the baffling channel and the preset liquid level position of the chamber.

As the utility model provides an above-mentioned vapour and liquid separator's an optimal technical scheme, keep away from on the body the one end of gas vent still is provided with the leakage fluid dram.

As the utility model provides an above-mentioned vapour and liquid separator's an preferred technical scheme still includes the level gauge, the level gauge sets up the body outside is close to the one end of leakage fluid dram.

As the utility model provides an above-mentioned gas-liquid separator's an preferred technical scheme, be connected with throttling arrangement or automatically controlled valve on the leakage fluid dram.

As the utility model provides an above-mentioned vapour and liquid separator's an preferred technical scheme, still be provided with the tonifying qi mouth on the body, the tonifying qi mouth is located the baffling passageway with between the predetermined liquid level position of cavity.

As the utility model provides an above-mentioned gas-liquid separator's an preferred technical scheme, gas-liquid separator still includes the relief valve, be close to on the body the one end of gas vent is provided with the relief valve.

Furthermore, the utility model also provides a cooling water set, including compressor, condenser, evaporimeter and above-mentioned arbitrary vapour and liquid separator.

The utility model provides a pair of vapour and liquid separator and cooling water set, through set up in vapour and liquid separator's inner chamber along the baffling passageway that the direction of refrigerant import to gas vent was buckled and is extended, increased gaseous state refrigerant and flowed the distance to the gas vent by the refrigerant import to this forms the loss to refrigerant kinetic energy, effectively reduces the velocity of flow of refrigerant, makes a small amount of liquid refrigerant that has in the gaseous state refrigerant have sufficient time and the distance to subside. In addition, gaseous refrigerant and liquid refrigerant can be further separated by the resistance action and the collision action between the refrigerant and the baffling channel, so that the separation efficiency of the gas-liquid separator is greatly improved.

Furthermore, the utility model provides a pair of vapour and liquid separator and cooling water set still sets up the leakage fluid dram through the one end of keeping away from the gas vent on vapour and liquid separator, when liquid refrigerant's liquid level exceeded the setting value, can join a small amount of liquid refrigerant in the vapour and liquid separator and the highly compressed gaseous state refrigerant of compressor exhaust high temperature and get into the compressor after the gasification to the realization both can reduce the liquid refrigerant in the vapour and liquid separator and can not waste the purpose of refrigerant again.

Drawings

The gas-liquid separator and the water chiller according to the present invention will be described with reference to the accompanying drawings.

In the drawings:

FIG. 1 is a schematic structural view of a gas-liquid separator according to the present embodiment;

fig. 2 is a schematic structural diagram of the water chilling unit according to the present embodiment.

List of reference numerals

110-a compressor; 120-a one-way valve; 111-a first temperature sensor; 112-a first pressure sensor; 210-a condenser; 211-a first safety valve; 212-a fifth temperature sensor; 213-a first level gauge; 220-ball valve; 230-a first dry filter; 240-an economizer; 250-a fourth electrically controlled valve; 260-a first throttling means; 270-an evaporator; 271-a second temperature sensor; 272-a second pressure sensor; 273-a fan; 280-a gas-liquid separator; 281-a second level gauge; 282-a second relief valve; 283-a deflector; 284-baffle channel; 285-refrigerant inlet of gas-liquid separator; 286-the vent of the gas-liquid separator; 287-liquid drain of gas-liquid separator; 288-gas supply port of gas-liquid separator; 301-a fifth electrically controlled valve; 302-a third temperature sensor; 303-a third pressure sensor; 401-fifth throttling means; 402-a fourth temperature sensor; 403-a fourth pressure sensor; 404-a third electrically controlled valve; 501-a second throttling device; 601-a third throttling means; 701-a second dry filter; 702-a fourth throttling device; 801-a first electrically controlled valve; 802-ejector; 901-pressure regulating valve.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present embodiment has been described with reference to a water chiller assembly for a gas-liquid separator, it is not intended to limit the scope of the present invention, and those skilled in the art may apply the present invention to other applications without departing from the principles of the present invention. For example, air conditioners such as wall-mounted air conditioners, multi-split air conditioners, and cabinet air conditioners.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1, the present embodiment provides a gas-liquid separator 280, comprising a body; a cavity is formed in the body, an exhaust port (i.e., the exhaust port 286 of the gas-liquid separator shown in fig. 1) is formed at one end of the body, and a refrigerant inlet (i.e., the refrigerant inlet 285 of the gas-liquid separator shown in fig. 1) is further formed on the body; the exhaust port and the refrigerant inlet are respectively communicated with the cavity; a deflection passage 284 is formed in the chamber, and the deflection passage 284 extends in a direction from the refrigerant inlet to the exhaust port.

For example, as shown in fig. 1, the gas-liquid separator 280 has an exhaust port at an upper portion thereof and a refrigerant inlet near a lower portion thereof.

In the gas-liquid separator 280 provided in this embodiment, the baffling passage 284 bent and extended along the direction from the refrigerant inlet to the air outlet is disposed in the inner cavity of the gas-liquid separator 280, so that the path of the gaseous refrigerant from the refrigerant inlet to the air outlet is increased, the loss of kinetic energy of the gaseous refrigerant is formed, the flow velocity of the gaseous refrigerant is effectively reduced, and a small amount of liquid refrigerant in the gaseous refrigerant has enough time and path for settling. In addition, the gaseous refrigerant and the liquid refrigerant can be further separated by the resistance and collision between the refrigerant and the baffle passage 284, so that the separation efficiency of the gas-liquid separator 280 is greatly improved.

As a preferred embodiment of the gas-liquid separator 280 provided in this embodiment, the gas-liquid separator 280 further includes a plurality of baffles 283, and the plurality of baffles 283 are respectively connected to the inner wall of the body and enclose the baffling channel 284.

Illustratively, the plurality of flow deflectors 283 are arranged in the cavity of the gas-liquid separator 280 at intervals in the horizontal direction, and a channel for the refrigerant to pass through is formed between the flow deflectors 283 and the inner wall of the cavity, i.e. a baffling channel 284 in the gas-liquid separator 280 is formed, and the purposes of changing the flow direction of the refrigerant and increasing the length of the flow path of the refrigerant for many times are achieved.

As a preferred embodiment of the gas-liquid separator 280 provided in the present embodiment, the deflecting channel 284 has a spiral shape or an S shape.

For example, the shape of the baffle 284 may be a spiral extending from the inlet end to the outlet end of the refrigerant around the axis of the body; alternatively, the shape of the deflecting channel 284 may be a shape that is continuously folded back in the opposite horizontal direction as shown in fig. 1 and forms an S-shape extending from the refrigerant inlet end to the air outlet end.

In a preferred embodiment of the gas-liquid separator 280 provided in this embodiment, the refrigerant inlet is located between the baffle 284 and a predetermined liquid level of the chamber.

Illustratively, the refrigerant inlet is preferably disposed between the deflection passage 284 and the predetermined liquid level position of the chamber, i.e., between the lower portion of the deflector 283 corresponding to the lowermost layer of the deflection passage 284 and the predetermined liquid level position of the chamber.

The gaseous refrigerant is just above the preset liquid level when entering the gas-liquid separator 280 from the refrigerant inlet, so that the gaseous refrigerant is prevented from entering the liquid level and carrying liquid again; and the refrigerant inlet is located below the deflection passage 284 to facilitate the flow of gaseous refrigerant into the deflection passage 284 and along the deflection passage 284. The preset liquid level position of the gas-liquid separator refers to the highest position of the liquid level allowed by the gas-liquid separator in normal use.

As a preferred embodiment of the gas-liquid separator 280 provided in this embodiment, a drain port (i.e., the drain port 287 of the gas-liquid separator shown in fig. 1) is further provided at one end of the main body away from the exhaust port.

For example, the liquid discharge port may be disposed on a side surface of the gas-liquid separator 280, so that the pipeline extends to a bottom end of the cavity, and the liquid discharge port is disposed at an end of the gas-liquid separator 280, which is far from the exhaust port, so that when a liquid level of the liquid refrigerant exceeds a predetermined value, a small amount of the liquid refrigerant in the gas-liquid separator 280 and a high-temperature and high-pressure gaseous refrigerant discharged from the compressor 110 or a high-temperature and high-pressure gaseous refrigerant discharged from the condenser 210 may be merged and vaporized and then enter the compressor 110, thereby achieving a purpose of reducing the liquid refrigerant in the gas-liquid separator 280 and not wasting the refrigerant.

As a preferred embodiment of the above-mentioned gas-liquid separator 280 provided in this embodiment, the liquid level meter is further included, and the liquid level meter is disposed at one end of the outside of the body near the liquid discharge port.

For example, the liquid level in the gas-liquid separator 280 may be detected by providing a liquid level meter at an end of the body near the liquid discharge port, a liquid level position at which the liquid refrigerant needs to be discharged may be preset, and when the liquid refrigerant reaches the liquid level, the valve of the liquid discharge port is opened to allow the liquid refrigerant to flow out. For convenience of distinction from the first level meter 213 provided on the condenser 210 hereinafter, the level meter provided on the gas-liquid separator 280 is referred to as a second level meter 281.

Since the gas-liquid separator 280 is provided with the second liquid level gauge 281, the liquid refrigerant is discharged as long as the liquid level of the refrigerant is slightly larger than the preset liquid level position at which the liquid refrigerant needs to be drained; when the liquid level of the liquid refrigerant is reduced to a normal range, the liquid discharge is stopped. Thus, the amount of the liquid refrigerant discharged by the gas-liquid separator 280 at a time is small, and if a portion of the high-temperature and high-pressure gaseous refrigerant in the discharge port of the compressor 110 or the intake port of the condenser 210 is mixed with the liquid refrigerant, the liquid refrigerant is vaporized and returned to the compressor 110 along with the suction line of the compressor 110.

As a preferred embodiment of the gas-liquid separator 280 provided in this embodiment, an electric control valve is connected to the liquid outlet.

For example, the control system of the water chiller or the air conditioner may receive the actual liquid level position information measured by the liquid level meter, and control the on/off of the electrically controlled valve according to the comparison result between the actual liquid level position and the preset liquid level position, so as to control the liquid discharge of the gas-liquid separator 280.

As a preferred embodiment of the gas-liquid separator 280 provided in this embodiment, the main body is further provided with an air supply port (i.e. the air supply port 288 of the gas-liquid separator shown in fig. 1), and the air supply port is located between the deflection passage 284 and the preset liquid level in the chamber.

Illustratively, the inside of the water chiller as shown in FIG. 2 includes a plurality of cold air blowers, each of which includes an evaporator 270 and a fan 273. When the water chilling unit is used, the condition that the load of the water chilling unit is small due to the fact that the number of the opened air coolers is small can be met. The compressor 110 may reduce energy output within a certain range along with reduction of load, however, when the energy of the compressor 110 is reduced to a certain value, the compressor 110 may be stopped, so that a part of high-temperature and high-pressure gaseous refrigerant entering the condenser 210 may be introduced into the gas-liquid separator 280, and then returned to the compressor 110 along with the suction pipeline of the compressor 110, so as to ensure that the cold water unit can still maintain normal energy output when the load of the air cooler is small.

As a preferred embodiment of the gas-liquid separator 280 provided in this embodiment, the gas-liquid separator 280 further includes a safety valve (e.g., a second safety valve 282 shown in fig. 1) provided at an end of the main body near the exhaust port.

For example, the pressure in the gas-liquid separator 280 may be too high due to the blockage of the refrigerant line or other accidents, and by providing the second safety valve 282 on the gas-liquid separator 280, when the pressure in the gas-liquid separator 280 reaches a certain value, the second safety valve 282 automatically opens to release the pressure, so as to ensure that the gas-liquid separator 280 is not damaged. Further, the second safety valve 282 may be disposed near the exhaust port of the gas-liquid separator 280, such that gaseous refrigerant is released during decompression, which is more environmentally friendly and economical than liquid refrigerant.

In addition, as shown in fig. 2, the embodiment further provides a water chilling unit, which includes a compressor 110, a condenser 210, a first throttling device 260, an evaporator 270, a gas-liquid separator 280 and an ejector 802; the discharge port of the compressor 110 is connected to the refrigerant inlet of the condenser 210; a first liquid discharge port of the condenser 210 is communicated with a refrigerant inlet of the evaporator 270 through a first throttling device 260, and a refrigerant outlet of the evaporator 270 is communicated with a refrigerant inlet of the gas-liquid separator 280; the exhaust port of the gas-liquid separator 280 communicates with the suction port of the compressor 110; a first end of the ejector 802 is communicated with the first exhaust port of the condenser 210, a second end of the ejector 802 is communicated with the liquid outlet of the gas-liquid separator 280, and a third end of the ejector 802 is communicated with the suction port of the compressor 110.

For example, in the present embodiment, the first exhaust port of the condenser 210 and the drain port 287 of the gas-liquid separator are connected to the suction port of the compressor 110 through the ejector 802, respectively. When the liquid level of the refrigerant in the gas-liquid separator 280 exceeds a set position, the ejector 802 can be communicated with the first exhaust port of the condenser 210, the compressor 110 sucks the high-temperature and high-pressure gaseous refrigerant in the condenser 210 to the air suction port of the compressor 110 through the ejector 802 at a high flow rate, a negative pressure is formed at the second end of the ejector 802 connected with the gas-liquid separator 280, the liquid refrigerant in the gas-liquid separator 280 is sucked into the ejector 802 at a small flow rate and is merged and vaporized with the high-temperature and high-pressure gaseous refrigerant flowing out of the condenser 210, and then the liquid refrigerant returns to the air suction port of the compressor 110 together, so that the liquid level of the refrigerant in the gas-liquid separator 280 can be reduced, and the.

It is understood that a first electrically controlled valve 801 may be disposed between the first end of the ejector 802 and the first exhaust port of the condenser 210, so that when the liquid level of the gas-liquid separator 280 is controlled, the first electrically controlled valve 801 controls the connection and disconnection between the ejector 802 and the first exhaust port of the condenser 210 and the flow rate.

A corresponding electric control valve can be arranged on the liquid outlet 287 of the gas-liquid separator to realize the opening and closing of the liquid outlet 287 of the gas-liquid separator and the control of the flow; the liquid level of the refrigerant in the gas-liquid separator 280 can be monitored by the second liquid level gauge 281 arranged on the gas-liquid separator 280 and fed back to the control system of the water chilling unit, and the control system of the water chilling unit controls the liquid discharge process of the gas-liquid separator 280 by controlling the electric control valves arranged on the first electric control valve 801 and the liquid discharge ports of the gas-liquid separator 280.

The condenser 210 in this embodiment may alternatively be a shell and tube condenser 210. A check valve 120 may be further disposed between the discharge port of the compressor 110 and the intake port of the condenser 210, and the check valve 120 only allows the refrigerant to flow from the compressor 110 to the condenser 210, thereby preventing the refrigerant from flowing in the reverse direction, and ensuring the reliability and safety of the operation of the chiller system.

As a preferred embodiment of the water chilling unit according to the present embodiment, the second exhaust port of the condenser 210 communicates with the air supply port 288 of the gas-liquid separator, and a second throttling device 501 is further provided between the second exhaust port of the condenser 210 and the air supply port 288 of the gas-liquid separator.

For example, when the number of the air coolers is small, which results in the energy requirement of the load being less than the minimum energy output limit of the compressor 110, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 110 may directly enter the gas-liquid separator 280 through the second gas outlet of the condenser 210 and the gas inlet of the gas-liquid separator 280 to participate in the refrigerant circulation. Thus, the compressor 110 is guaranteed not to stop when the load of the air cooler is small.

The discharge pressure of the compressor 110 may be monitored by a first pressure sensor 112 disposed at the discharge port of the compressor 110, and the suction pressure of the compressor 110 may be monitored by a third pressure sensor 303 disposed at the suction port of the compressor 110 to determine whether the second discharge port of the condenser 210 needs to be communicated with the make-up gas port 288 of the gas-liquid separator.

As a preferred embodiment of the water chilling unit according to this embodiment, the exhaust port of the compressor 110 is further communicated with the makeup port of the gas-liquid separator 280, and a third throttling device 601 is further disposed between the exhaust port of the compressor 110 and the makeup port of the gas-liquid separator 280.

For example, when the compressor 110 operates at a high pressure and needs to be stopped, the exhaust port of the compressor 110 may be connected to the gas inlet of the gas-liquid separator 280, and the high-temperature and high-pressure gaseous refrigerant is reduced in pressure by the third throttling device 601 and then directly enters the gas-liquid separator 280 to circulate the refrigerant, so as to reduce the system pressure of the chiller and assist the compressor 110 to stop.

The discharge pressure of the compressor 110 may be monitored by a first pressure sensor 112 provided at the discharge port of the compressor 110, and the suction pressure of the compressor 110 may be monitored by a third pressure sensor 303 provided at the suction port of the compressor 110 to determine whether the discharge port of the compressor 110 needs to be communicated with the makeup port of the gas-liquid separator 280.

As a preferred embodiment of the water chilling unit provided in this embodiment, the second liquid outlet of the condenser 210 is further communicated with the refrigerant inlet of the gas-liquid separator 280; a fourth throttle device 702 is connected between the second drain port of the condenser 210 and the gas-liquid separator 280.

For example, when the temperature in the gas-liquid separator 280 is high, the second liquid outlet of the condenser 210 may be communicated with the refrigerant inlet of the gas-liquid separator 280, so that the liquid refrigerant in the condenser 210 passes through the fourth throttling device 702 and then enters the gas-liquid separator 280 to be vaporized, thereby reducing the temperature inside the gas-liquid separator 280. It is understood that the temperature of the discharge gas of the gas-liquid separator is detected by providing the third temperature sensor 302 on the suction port of the compressor 110 to determine whether the temperature of the gas-liquid separator needs to be lowered.

As a preferred embodiment of the water chilling unit provided in this embodiment, the compressor 110 is a magnetic levitation compressor 110, and the second liquid outlet of the condenser 210 is further communicated with a cooling inlet of the magnetic levitation compressor 110; and the magnetically levitated compressor 110 is provided with a temperature sensor and a second electrically controlled valve.

For example, when the temperature sensor in the compressor 110 detects that the temperature of the compressor 110 is high, the second liquid discharge port of the condenser 210 may be connected to the cooling inlet of the magnetic levitation compressor 110 through the second electrically controlled valve, so that the liquid refrigerant in the condenser 210 enters the compressor 110 to be vaporized, and the temperature inside the compressor 110 is reduced.

As a preferred embodiment of the water chilling unit according to the present embodiment, a pressure regulating pipeline is connected between the cooling outlet of the compressor 110 and the suction port of the compressor 110, and a pressure regulating valve 901 is provided on the pressure regulating pipeline.

For example, when the pressure of the compressor 110 is higher, the high-pressure refrigerant gas in the regulating pipeline, part of the high-pressure refrigerant gas in the compressor 110, after being pressure-regulated by the pressure regulating valve 901, may be returned to the compressor 110 to realize the regulation of the pressure in the compressor 110.

The regulation of the pressure in the compressor 110 may be achieved by providing a first temperature sensor 111 and a first pressure sensor 112 at the discharge of the compressor 110 to monitor the discharge temperature and pressure of the compressor 110 and a third temperature sensor 302 and a third pressure sensor 303 at the suction of the compressor 110 to monitor the suction temperature and pressure of the compressor 110.

As a preferred embodiment of the water chilling unit provided in this embodiment, the water chilling unit further includes an economizer 240, and the economizer 240 includes a condensation portion and an evaporation portion; the first drain port of the condenser 210 communicates with the first throttling device 260 through the condensing portion; the first liquid outlet of the condenser 210 is further communicated with a refrigerant inlet of the evaporation portion through a fifth throttling device 401, and a refrigerant outlet of the evaporation portion is communicated with a gas supplementing port of the compressor 110 through a third electric control valve 404.

Illustratively, the liquid refrigerant discharged from the first discharge port of the condenser 210 enters the evaporator of the economizer 240 for evaporation and heat absorption through the pressure reduction effect of the fifth throttling device 401, and meanwhile, the refrigerant in the condenser of the economizer 240 is condensed to release heat, and after the refrigerant in the evaporator of the economizer 240 exchanges heat with the refrigerant in the condenser, the supercooling degree of the refrigerant entering the evaporator 270 is reduced, so that the evaporation efficiency of the refrigerant in the evaporator 270 is increased, and the refrigerating capacity of the water cooling unit is improved.

In addition, the refrigerant in the evaporation portion of the economizer 240 evaporates and absorbs heat, and then turns into a gaseous refrigerant, which enters the compressor 110, thereby increasing the internal pressure of the compressor 110 and promoting the refrigerant circulation.

The fourth temperature sensor 402 and the fourth pressure sensor 403 may be connected to a pipe between the economizer 240 and the suction port of the compressor 110, and the fifth throttle device 401 may be adjusted according to the temperature and pressure of the refrigerant outlet of the evaporator of the economizer 240.

A first temperature sensor 111 and a first pressure sensor 112 are provided at a discharge port of the compressor 110 to monitor a discharge temperature and a pressure of the compressor 110, and a third temperature sensor 302 and a third pressure sensor 303 are provided at a suction port of the compressor 110 to monitor a suction temperature and a pressure of the compressor 110. The chiller control system may combine the discharge temperature and pressure of the compressor 110 and the suction temperature and pressure to determine whether the compressor 110 needs to be cooled, supplemented with air, or bled as described above.

When the water chilling unit provided by the embodiment is used, the indoor air coolers generally comprise a plurality of groups, and each group of air coolers is provided with an independent evaporator 270, a fan 273 and a first throttling device 260.

It can be understood by those skilled in the art that the protection scope of the present invention is not limited to the contents of the gas-liquid separator and the water chiller disclosed in the above embodiments, and those skilled in the art can make various adjustments and combinations to the above setting modes without departing from the working principle of the present invention, so that the present invention can be applied to more specific application scenarios.

For example, in another alternative embodiment, a second temperature sensor 271 and a second pressure sensor 272 may be further disposed at the refrigerant outlet of the evaporator 270, and the control system may adjust the first throttling device 260 according to the refrigerant outlet temperature of the evaporator 270. If the first throttle 260 is an electronic expansion valve, the opening degree of the electronic expansion valve is increased when the superheat degree of the refrigerant outlet of the evaporator 270 is large; when the superheat degree of the refrigerant outlet of the evaporator 270 is small, the opening degree of the electronic expansion valve is reduced to ensure the evaporation effect of the evaporator 270. The superheat is a difference between an actual temperature of a refrigerant outlet of the evaporator 270 and a saturation temperature corresponding to an actual pressure.

As another example, in an alternative embodiment, a fourth electrically controlled valve 250 may be disposed between the condenser 210 and the first throttling device 260, the first throttling device 260 may be an electronic expansion valve or a capillary tube, and the fourth electrically controlled valve 250 may be an electrically operated ball valve 220. Therefore, the refrigerant in the indoor air cooler is controlled to be turned on when the compressor 110 is started and to be turned off when the compressor 110 is turned off by the fourth electrically controlled valve 250.

For another example, in another alternative embodiment, the fifth electronic control valve 301 may be used to control the on/off of the refrigerant between the suction port of the compressor 110 and the discharge port of the gas-liquid separator 280. Wherein, the fifth electric control valve 301 may be a butterfly valve. The opening and closing of the first refrigerant outlet of the condenser 210 may also be controlled by a ball valve 220 or other electrically controlled valve.

For another example, in another alternative embodiment, a first safety valve 211 may be further disposed on the condenser 210, and when the pressure in the condenser 210 reaches a warning value, the first safety valve 211 is automatically opened to release the pressure, so as to ensure that the condenser 210 is not damaged.

For another example, in another alternative embodiment, a first dry filter 230 may be further disposed at the first refrigerant outlet of the condenser 210 to filter impurities in the refrigerant, and then the refrigerant passes through the first dry filter 230 and enters the first throttling device 260 or the economizer 240 and the fifth throttling device 401 to ensure the refrigeration efficiency of the chiller. Similarly, a second dry filter 701 may be disposed at a second refrigerant outlet of the condenser 210, so that the refrigerant is filtered by the second dry filter 701 and then enters the compressor 110 or the gas-liquid separator 280.

For another example, in another alternative embodiment, a first liquid level gauge 213 is disposed on the condenser 210 for monitoring the liquid level in the condenser 210, a fifth temperature sensor 212 is disposed on the condenser 210 for detecting the temperature in the condenser 210, and a control system of the water chiller can control an external air-cooling or water-cooling device connected to the condenser, such as a cooling tower and its pipes, according to the liquid level and the temperature in the condenser 210.

For another example, in another alternative embodiment, a fourth temperature sensor 402 and a fourth pressure sensor 403 may be connected to a pipeline between the economizer 240 and the supplementary air port of the compressor 110, and the fifth throttle device 401 may be adjusted according to the temperature and pressure of the refrigerant outlet of the evaporator portion of the economizer 240.

Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.

Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

1. A gas-liquid separator characterized by:

comprises a body;

a cavity is formed in the body, an exhaust port is formed at one end of the body, and a refrigerant inlet is formed in the body; the exhaust port and the refrigerant inlet are respectively communicated with the cavity;

and a baffling channel is formed in the cavity and bends and extends along the direction from the refrigerant inlet to the exhaust port.

2. The gas-liquid separator of claim 1, wherein:

the baffle plate is connected with the inner wall of the body and surrounds the baffling channel.

3. The gas-liquid separator of claim 1, wherein:

the baffling channel is spiral or S-shaped.

4. The gas-liquid separator of claim 1, wherein:

the refrigerant inlet is positioned between the baffling channel and the preset liquid level position of the cavity.

5. The gas-liquid separator of claim 1, wherein:

and a liquid outlet is also formed in one end of the body, which is far away from the exhaust port.

6. The gas-liquid separator of claim 5, wherein:

the liquid level meter is arranged at one end, close to the liquid outlet, of the outer portion of the body.

7. The gas-liquid separator of claim 5, wherein:

and the liquid outlet is connected with an electric control valve.

8. The gas-liquid separator of claim 1, wherein:

the body is also provided with an air supplementing port which is positioned between the baffling channel and the preset liquid level position of the cavity.

9. The gas-liquid separator of claim 1, wherein:

the safety valve is arranged at one end, close to the exhaust port, of the body.

10. A water chilling unit is characterized in that:

comprising a compressor, a condenser, an evaporator and a gas-liquid separator according to any one of claims 1 to 9.

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