An industrial chiller

Abstract

The present invention relates to the technical field of industrial chillers, specifically an industrial chiller, comprising a casing, a water tank fixedly mounted at one end of a lower cavity; a throttle valve is connected to a position near the water tank inside the lower cavity through a pipeline; one end of the throttle valve is connected to a drying filter through a pipeline; a water inlet and a water outlet are respectively provided at the upper and lower parts of one side of the outer surface of the water tank; an evaporator is arranged inside the water tank; one end of the evaporator penetrates a partition and is connected to a gas-liquid separation mechanism through a pipeline, and the gas-liquid separation mechanism is fixedly mounted at one end of the upper cavity. The gas-liquid separation mechanism can automatically adjust the coolant flow path according to the state of the coolant entering the compressor. Compared with the prior art, the coolant needs to undergo a gas-liquid separation scheme whether the compressor is started or working normally. The present invention has the advantages of shortening the residence time of the gaseous coolant in the pipeline, thereby improving the working efficiency of the compressor, and reducing the operating load of the chiller.

Description

Technical Field

[0001] The invention relates to the technical field of industrial chillers, in particular to an industrial chiller unit. Background Art

[0002] A chiller is a device that can provide cooling water at constant temperature, constant flow and constant pressure. An industrial chiller is a type of chiller. Chillers can be divided into air-cooled chillers and water-cooled chillers. The chiller injects a certain amount of water into the machine's internal water tank, cools the water through the chiller's refrigeration system, and then the water pump inside the chiller injects low-temperature cooling water into the equipment that needs to be cooled. The chilled water takes away the heat inside the machine and flows back to the water tank for cooling, circulating heat exchange cooling to achieve the purpose of cooling the equipment.

[0003] The compressor is the core component of the chiller. One of the phenomena that chiller compressors are prone to failure is liquid hammer. The liquid impact of the chiller will cause damage to the scroll plate. The failure phenomenon is generally manifested as an obvious metal impact sound inside the compressor. This is the sound of metal fragments after the scroll plate is broken colliding with each other or with the compressor casing. The main cause of the liquid hammer phenomenon is that a large amount of refrigerant liquid enters the compressor when the compressor starts or the evaporator flow is insufficient (output load decreases), and the compressor has liquid return. The solution to the liquid hammer phenomenon is usually to add a gas-liquid separator at the compressor suction port during pipeline design.

[0004] A Chinese patent discloses an industrial chiller, and the patent application number is CN201811055579.6. An industrial chiller includes a compressor, a condenser, a drying filter, an expansion valve, an evaporator, and a gas-liquid separator. The compressor discharges high-temperature and high-pressure gaseous refrigerant, and the gaseous refrigerant enters the condenser to dissipate heat and then enters the drying filter. The dried and filtered gaseous refrigerant is converted into liquid refrigerant after passing through the expansion valve and enters the evaporator for refrigeration and heat exchange. The refrigerant after heat exchange enters the gas-liquid separator to filter out the liquid refrigerant to obtain the gaseous refrigerant and discharge it back to the compressor.

[0005] Although the above-mentioned device can efficiently separate the gas-liquid coolant, it can be seen from the existing data that when the chiller is started, the evaporator is not working, the refrigerant in the pipeline is in liquid state, and a large amount of refrigerant liquid will enter the compressor when the compressor is started. When the chiller is working normally, the refrigerant will evaporate through the evaporator and is usually a gaseous coolant when entering the compressor, and there is no need for gas-liquid separation. In the comparative patent, whether the compressor is started or working normally, the coolant needs to undergo gas-liquid separation, which prolongs the residence time of the coolant in the pipeline, thereby reducing the working efficiency of the compressor and increasing the operating load of the chiller.

[0006] Therefore, an industrial chiller is proposed. Summary of the invention

[0007] The object of the present invention is to provide an industrial water chiller to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: an industrial chiller, comprising a casing, a fan is fixedly installed at the middle position of the upper surface of the casing; a pressure gauge is arranged at the upper end of the front surface of the casing, and a control panel is arranged at the lower end of the front surface of the casing; a heat dissipation window is opened at the middle position of the outer surface of one side of the casing; a partition is fixedly installed at the middle position of the interior of the casing, and the partition divides the internal space of the casing into an upper cavity and a lower cavity; a water tank is fixedly installed at one end of the lower cavity; a water tank is connected to the lower cavity through a pipeline at a position near the water tank A throttle valve; one end of the throttle valve is connected to a drying filter through a pipeline; a water inlet and a water outlet are respectively provided at the upper and lower parts of one side of the outer surface of the water tank; an evaporator is arranged inside the water tank; one end of the evaporator penetrates the partition and is connected to a gas-liquid separation mechanism through a pipeline, and the gas-liquid separation mechanism is fixedly installed at one end of the upper cavity; a compressor is connected to one side of the gas-liquid separation mechanism through a pipeline; a water-cooled condenser is connected to one side of the compressor through a pipeline; the lower end of the water-cooled condenser is connected to the drying filter through a pipeline;

[0009] The gas-liquid separation mechanism includes an outer shell, a refrigerant inlet, a gas-liquid two-phase flow sensor, an inner shell, a first gaseous refrigerant outlet, a liquid refrigerant outlet, a receiving tray, an upper limit column, a second gaseous refrigerant outlet, a lower limit column, an electromagnet, a spring and a liquid outlet; one end of the refrigerant inlet arranged on the outer shell is connected to the evaporator through a pipeline; a first gaseous refrigerant outlet is formed through the upper part of one side of the outer surface of the outer shell; a liquid refrigerant outlet is arranged in the middle position of the lower end of the outer shell; a gas-liquid two-phase flow sensor is fixedly installed on the refrigerant inlet; an inner refrigerant is fixedly installed at the top of the inner shell The shell has a trumpet-shaped upper end and a straight-cylindrical lower end; a plurality of liquid outlets are evenly arranged in a ring shape on the outer surface of the inner shell near the lower end; a lower limit column is fixedly installed in the middle position of the bottom of the inner shell; a plurality of springs are evenly fixed in a ring shape at the bottom of the inner shell near the lower limit column; a receiving tray is fixedly installed on the upper ends of the plurality of springs, and an upper limit column is fixedly installed in the middle position of the lower surface of the receiving tray, and electromagnets are arranged on the opposite surfaces of the upper limit column and the lower limit column; a second gaseous refrigerant outlet is fixedly installed on the upper end of the other side of the outer surface of the inner shell, and one end of the second gaseous refrigerant outlet extends to the outside of the outer shell.

[0010] When the chiller is started, the evaporator is not working and the refrigerant in the pipeline is in liquid state. When the compressor is started, a large amount of refrigerant liquid will enter the compressor. When the chiller is working normally, the refrigerant will evaporate through the evaporator and enter the compressor as a gaseous coolant, which does not require gas-liquid separation. In the comparative patent, whether the compressor is started or working normally, the coolant needs to be separated from the gas and liquid, which prolongs the residence time of the coolant in the pipeline, thereby reducing the working efficiency of the compressor and increasing the operating load of the chiller. When the gas-liquid separation mechanism of the present invention is used, it is separated from the gas and liquid by the gas-liquid separation mechanism. The coolant passing through the refrigerant inlet will be detected by a gas-liquid two-phase flow sensor (Chinese patent CN201110208471.8 Gas-liquid two-phase flow velocity and gas content sensor discloses this prior art). If the gas content of the incoming coolant is not 100% after detection, that is, the coolant is a gas-liquid mixture, the control panel receives the gas-liquid two-phase flow sensor and controls the solenoid valve on the second gaseous refrigerant outlet to close, and at the same time energizes the electromagnet. After the liquid in the gas-liquid mixed coolant enters the inner shell, it falls into the receiving tray. After accumulating to a certain weight, the receiving tray is The spring force is overcome and the spring is compressed, and the receiving tray is lowered to a certain height. The two energized electromagnets capture each other due to the mutually attractive magnetic fields, so that the lower limit column and the upper limit column fit together and leak out of the liquid outlet. At this time, the mixture flows out through the liquid outlet and enters the inside of the outer shell. The gas-liquid separation is carried out by the principle of gravity sedimentation. The gaseous coolant is discharged through the first gaseous refrigerant outlet, and the liquid coolant is refluxed through the liquid refrigerant outlet. After the chiller has been working for a period of time, the coolant entering the refrigerant inlet is usually in a gaseous state, and the gas-liquid two-phase flow sensor detects that the coolant does not contain liquid After the body is turned on, the control panel receives the signal and controls the electromagnet to cut off the power, and opens the solenoid valve at the same time. After the electromagnet is cut off, the receiving tray rises under the elastic force of the spring in the compressed state, blocking the liquid outlet, so that the gaseous refrigerant is directly discharged through the second gaseous refrigerant outlet without going through the gas-liquid separation step for discharge. Compared with the prior art, the coolant needs to go through the gas-liquid separation solution whether it is when the compressor is started or in normal operation. The present invention has the advantages of shortening the residence time of the gaseous refrigerant in the pipeline, thereby improving the working efficiency of the compressor and reducing the operating load of the chiller.

[0011] Preferably, the receiving pallet includes a pallet body, a mounting groove, a rubber sealing ring and a polytetrafluoroethylene coating; the pallet body is fixedly mounted on the upper end of the spring; a mounting groove is embedded in the middle of the annular outer surface of the pallet body; a rubber sealing ring is arranged inside the mounting groove, and a polytetrafluoroethylene coating is coated on the outer surface of the rubber sealing ring, so as to reduce the friction between the rubber sealing ring and the inner shell while ensuring the sealing performance.

[0012] During operation, the receiving tray needs to accumulate a certain amount of liquid before it can overcome the spring force and move downward. When the sealing of the connection position between the receiving tray and the inner shell is poor, the liquid is easy to leak out through the connection, thereby reducing the sensitivity of the gas-liquid separation mechanism. The receiving tray of the present invention is provided with a rubber sealing ring on the annular outer surface to improve the sealing of the connection position between the receiving tray and the inner shell. At the same time, the outer surface of the rubber sealing ring is coated with a polytetrafluoroethylene coating, which can reduce the friction between the receiving tray and the inner shell when moving, thereby improving the sensitivity of the gas-liquid separation mechanism.

[0013] Preferably, an arc-shaped guide panel is fixedly mounted on the upper surface of the tray body; a plurality of drainage grooves are provided in a ring shape on the upper surface of the arc-shaped guide panel, and the drainage grooves are provided in one-to-one correspondence with the liquid outlets.

[0014] During operation, since the plurality of liquid outlets are distributed in a ring shape, the liquid left on the tray body may not be discharged in line with the liquid outlet, thereby affecting the working efficiency of the gas-liquid separation mechanism. By providing a plurality of drainage grooves in a ring shape on the upper surface of the arc-shaped guide panel, and the drainage grooves are provided one-to-one with the liquid outlets, the coolant liquid can be discharged in line with the liquid outlet, thereby improving the working efficiency of the gas-liquid separation mechanism.

[0015] Preferably, when the upper limit post and the lower limit post are in contact with each other, the liquid outlet is just exposed and not blocked by the tray body, and at this time, the upper surface of the tray body and the lowest point of the liquid outlet are on the same horizontal line.

[0016] During operation, if the upper limit column and the lower limit column are in contact with each other, and the upper surface of the tray body is lower than the lowest point of the liquid outlet, liquid will be retained between the tray body and the inner shell body, affecting the working effect of the gas-liquid separation mechanism. The present invention sets the upper limit column and the lower limit column to be in contact with each other, so that the upper surface of the tray body and the lowest point of the liquid outlet are on the same horizontal line, thereby ensuring that no liquid will be retained between the tray body and the inner shell body, thereby ensuring the working effect of the gas-liquid separation mechanism.

[0017] Preferably, a flow guide mechanism is fixedly installed at the lower end of the inner surface of the outer shell; the flow guide mechanism includes a flow guide cover, a flow guide groove, a rubber connecting plate and a mounting block; a number of mounting blocks are evenly fixedly installed in a circular shape at the edge position of the lower end of the annular outer surface of the flow guide cover, and the flow guide cover is fixedly connected to the outer shell through the mounting block; a number of flow guide grooves are evenly arranged in a circular shape at the middle position of the annular outer surface of the flow guide cover, and the flow guide grooves are arranged one by one corresponding to the liquid outlets; the lower end of the flow guide groove is fixedly connected to a rubber connecting plate for forming a coolant liquid flow channel between the flow guide groove and the outer shell.

[0018] During operation, the mixed coolant flows out through the liquid outlet and enters the outer shell, and the gas-liquid separation is carried out by utilizing the gravity sedimentation principle. The liquid coolant will cause splashing when the liquid falls into the bottom of the outer shell, thereby generating mist, which will be discharged along with the gaseous coolant, reducing the gas-liquid separation effect. By providing a guide mechanism, when the mixed coolant flows out of the liquid outlet, the mixed coolant will enter the guide groove, and flow down along the inner wall of the outer shell through the rubber connecting plate, thereby solving the mist problem caused by the splashing effect of the free fall of the liquid coolant and improving the gas-liquid separation effect.

[0019] Preferably, a wire mesh demister is fixedly installed on the inner surface of the outer shell near the upper position of the flow guide mechanism to remove the splashed mist.

[0020] During operation, although the mist caused by sputtering is reduced by the guide mechanism, there is still a problem of mist caused by the splashing of a small amount of coolant liquid that has not flowed down the guide groove. By fixing a wire mesh demister on the upper position of the inner surface of the shell near the guide mechanism, the mist can be further removed, thereby further improving the gas-liquid separation effect.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The gas-liquid separation mechanism of the present invention can automatically adjust the coolant flow path according to the state of the coolant entering the compressor. Compared with the prior art, the coolant needs to undergo gas-liquid separation regardless of whether the compressor is started or working normally. The present invention has the advantages of shortening the residence time of the gaseous coolant in the pipeline, thereby improving the working efficiency of the compressor and reducing the operating load of the chiller. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a cross-sectional structural view of the present invention;

[0025] Figure 3 It is a structural view of the gas-liquid separation mechanism of the present invention;

[0026] Figure 4 This is a structural view of a receiving tray of the present invention;

[0027] Figure 5 This is a top view of the structure of the arc-shaped guide panel of the present invention;

[0028] Figure 6 This is a structural view of the flow guide mechanism of the present invention.

[0029] In the figure: 1, casing; 2, fan; 3, heat dissipation window; 4, control panel; 5, pressure gauge; 6, gas-liquid separation mechanism; 61, outer casing; 62, refrigerant inlet; 63, gas-liquid two-phase flow sensor; 64, inner casing; 65, first gaseous refrigerant outlet; 66, wire mesh demister; 67, liquid refrigerant outlet; 68, receiving tray; 681, tray body; 682, mounting groove; 683, rubber sealing ring; 684, arc-shaped guide panel; 685, polytetrafluoroethylene coating; 68 6. Drainage groove; 69. Upper limit column; 610. Second gaseous refrigerant outlet; 611. Diversion mechanism; 6111. Diversion cover; 6112. Diversion groove; 6113. Rubber connecting plate; 6114. Mounting block; 612. Lower limit column; 613. Electromagnet; 614. Spring; 615. Liquid outlet; 7. Compressor; 8. Water-cooled condenser; 9. Dry filter; 10. Throttle valve; 11. Partition; 12. Water tank; 13. Evaporator; 14. Water inlet; 15. Water outlet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figures 1 to 6 , the present invention provides a technical solution for an industrial chiller:

[0034] An industrial chiller, such as Figures 1 to 3 As shown, it includes a casing 1, a fan 2 is fixedly installed at the middle position of the upper surface of the casing 1; a pressure gauge 5 is arranged at the upper end of the front surface of the casing 1, and a control panel 4 is arranged at the lower end of the front surface of the casing 1; a heat dissipation window 3 is opened at the middle position of the outer surface of one side of the casing 1; a partition 11 is fixedly installed at the middle position of the interior of the casing 1, and the partition 11 divides the internal space of the casing 1 into an upper cavity and a lower cavity; a water tank 12 is fixedly installed at one end of the lower cavity; a throttle valve 10 is connected to the position of the lower cavity near the water tank 12 through a pipeline; one end of the throttle valve 10 is connected to the upper cavity by a pipe. A drying filter 9 is connected through a pipeline; a water inlet 14 and a water outlet 15 are respectively provided at the upper and lower parts of one side of the outer surface of the water tank 12; an evaporator 13 is arranged inside the water tank 12; one end of the evaporator 13 passes through the partition 11 and is connected to a gas-liquid separation mechanism 6 through a pipeline, and the gas-liquid separation mechanism 6 is fixedly installed at one end of the upper cavity; a compressor 7 is connected to one side of the gas-liquid separation mechanism 6 through a pipeline; a water-cooled condenser 8 is connected to one side of the compressor 7 through a pipeline; the lower end of the water-cooled condenser 8 is connected to the drying filter 9 through a pipeline;

[0035] The gas-liquid separation mechanism 6 includes an outer shell 61, a refrigerant inlet 62, a gas-liquid two-phase flow sensor 63, an inner shell 64, a first gaseous refrigerant outlet 65, a liquid refrigerant outlet 67, a receiving tray 68, an upper limit column 69, a second gaseous refrigerant outlet 610, a lower limit column 612, an electromagnet 613, a spring 614 and a liquid outlet 615; one end of the refrigerant inlet 62 arranged on the outer shell 61 is connected to the evaporator 13 through a pipeline; a first gaseous refrigerant outlet 65 is formed on the upper part of one side of the outer surface of the outer shell 61; a liquid refrigerant outlet 67 is arranged in the middle of the lower end of the outer shell 61; a gas-liquid two-phase flow sensor 63 is fixedly installed on the refrigerant inlet 62; a liquid refrigerant outlet 67 is fixedly installed on the top of the inner top of the outer shell 61 An inner shell body 64, and the upper end of the inner shell body 64 is trumpet-shaped, and the lower end is straight-cylindrical; a plurality of liquid outlets 615 are evenly arranged in a ring shape near the lower end on the outer surface of the inner shell body 64; a lower limit column 612 is fixedly installed in the middle position of the bottom of the inner shell body 64; a plurality of springs 614 are evenly fixed in a ring shape near the bottom of the inner shell body 64 near the lower limit column 612; a receiving tray 68 is fixedly installed on the upper ends of the plurality of springs 614, and an upper limit column 69 is fixedly installed in the middle position of the lower surface of the receiving tray 68, and electromagnets 613 are provided on the opposite surfaces of the upper limit column 69 and the lower limit column 612; a second gaseous refrigerant outlet 610 is fixedly installed on the upper end of the other side of the outer surface of the inner shell body 64, and one end of the second gaseous refrigerant outlet 610 extends to the outside of the outer shell body 61.

[0036] When the chiller is started, since the evaporator 13 is not working, the refrigerant in the pipeline is in liquid state. When the compressor 7 is started, a large amount of refrigerant liquid will enter the compressor 7. When the chiller is working normally, the refrigerant will evaporate through the evaporator 13 and is usually a gaseous refrigerant when entering the compressor 7. There is no need to separate the gas and liquid. In the comparative patent, whether the compressor 7 is started or working normally, the refrigerant needs to be separated from the gas and liquid, which prolongs the residence time of the refrigerant in the pipeline, thereby reducing the working efficiency of the compressor 7 and increasing the operating load of the chiller. When the gas-liquid separation mechanism 6 of the present invention is in use, the refrigerant passing through the refrigerant inlet 62 The coolant will be detected by the gas-liquid two-phase flow sensor 63 (Chinese patent CN201110208471.8 Gas-liquid two-phase flow velocity and gas content sensor discloses this prior art). If the gas content of the incoming coolant is not 100% after detection, that is, the coolant is a gas-liquid mixture, the control panel 4 receives the gas-liquid two-phase flow sensor 63 and controls the solenoid valve on the second gaseous refrigerant outlet 610 to close, and at the same time, the electromagnet 613 is energized. After the liquid in the gas-liquid mixed coolant enters the inner shell 64, it falls into the receiving tray 68. After accumulating to a certain weight, the receiving tray 68 descends due to the gravity of the liquid overcoming the elastic force of the spring 614. , so that the spring 614 is in a compressed state, the receiving tray 68 drops to a certain height, and the two energized electromagnets 613 capture each other due to the mutually attractive magnetic field, so that the lower limit column 612 and the upper limit column 69 fit together, leaking out of the liquid outlet 615. At this time, the mixture flows out through the liquid outlet 615 and enters the interior of the outer shell 61. The gas-liquid separation is carried out by the principle of gravity sedimentation. The gaseous coolant is discharged through the first gaseous refrigerant outlet 65, and the liquid coolant is refluxed through the liquid refrigerant outlet 67. After the chiller has been working for a period of time, the coolant entering the refrigerant inlet 62 is usually in a gaseous state, and the gas-liquid two-phase flow sensor 63 detects that the coolant does not contain liquid After the body, the control panel 4 receives the signal and controls the electromagnet 613 to cut off the power, and opens the solenoid valve at the same time. After the electromagnet 613 is cut off, the receiving tray 68 rises under the elastic force of the spring 614 in the compressed state, blocking the liquid outlet 615, so that the gaseous refrigerant is directly discharged through the second gaseous refrigerant outlet 610 without going through the gas-liquid separation step for discharge. Compared with the prior art, the coolant needs to go through the gas-liquid separation scheme whether it is when the compressor 7 is started or working normally. The present invention has the advantages of shortening the residence time of the gaseous refrigerant in the pipeline, thereby improving the working efficiency of the compressor 7 and reducing the operating load of the chiller.

[0037] As an embodiment of the present invention, Figure 4As shown, the receiving tray 68 includes a tray body 681, a mounting groove 682, a rubber sealing ring 683 and a polytetrafluoroethylene coating 685; the tray body 681 is fixedly mounted on the upper end of the spring 614; the mounting groove 682 is embedded in the middle of the annular outer surface of the tray body 681; a rubber sealing ring 683 is arranged inside the mounting groove 682, and the outer surface of the rubber sealing ring 683 is coated with a polytetrafluoroethylene coating 685, which is used to reduce the friction between the rubber sealing ring 683 and the inner shell 64 while ensuring the sealing performance; when working, the receiving tray 68 needs to accumulate a Only after a certain amount of liquid is added can it overcome the elastic force of spring 614 and move downward. When the sealing of the connection position between the receiving tray 68 and the inner shell 64 is poor, the liquid is easy to leak through the connection, thereby reducing the sensitivity of the gas-liquid separation mechanism 6. The receiving tray 68 of the present invention is provided with a rubber sealing ring 683 on the annular outer surface to improve the sealing of the connection position between the receiving tray 68 and the inner shell 64. At the same time, the outer surface of the rubber sealing ring 683 is coated with a polytetrafluoroethylene coating 685, which can reduce the friction between the receiving tray 68 and the inner shell 64 when moving, thereby improving the sensitivity of the gas-liquid separation mechanism 6.

[0038] As an embodiment of the present invention, Figure 5 As shown, an arc-shaped guide panel 684 is fixedly installed on the upper surface of the tray body 681; a plurality of drainage grooves 686 are provided in a ring shape on the upper surface of the arc-shaped guide panel 684, and the drainage grooves 686 are provided in a one-to-one correspondence with the liquid outlet 615; during operation, since the plurality of liquid outlets 615 are distributed in a ring shape, the liquid left on the tray body 681 may not be discharged in alignment with the liquid outlet 615, thereby affecting the working efficiency of the gas-liquid separation mechanism 6; by providing a plurality of drainage grooves 686 in a ring shape on the upper surface of the arc-shaped guide panel 684, and the drainage grooves 686 are provided in a one-to-one correspondence with the liquid outlet 615, the coolant liquid can be discharged in alignment with the liquid outlet 615, thereby improving the working efficiency of the gas-liquid separation mechanism 6.

[0039] As an embodiment of the present invention, Figure 3 As shown, when the upper limit column 69 and the lower limit column 612 are in contact with each other, the liquid outlet 615 is just exposed and not blocked by the tray body 681. At this time, the upper surface of the tray body 681 and the lowest point of the liquid outlet 615 are on the same horizontal line; during operation, if the upper limit column 69 and the lower limit column 612 are in contact with each other, the upper surface of the tray body 681 is lower than the lowest point of the liquid outlet 615, which will cause liquid to accumulate between the tray body 681 and the inner shell 64, affecting the working effect of the gas-liquid separation mechanism 6. The present invention ensures that no liquid will accumulate between the tray body 681 and the inner shell 64, thereby ensuring the working effect of the gas-liquid separation mechanism 6.

[0040] As an embodiment of the present invention, Figure 6 As shown, a flow guide mechanism 611 is fixedly installed at the lower end of the inner surface of the outer shell 61; the flow guide mechanism 611 includes a flow guide cover 6111, a flow guide groove 6112, a rubber connecting plate 6113 and a mounting block 6114; a plurality of mounting blocks 6114 are evenly fixedly installed in a circular shape on the lower edge of the annular outer surface of the flow guide cover 6111, and the flow guide cover 6111 is fixedly connected to the outer shell 61 through the mounting block 6114; a plurality of flow guide grooves 6112 are evenly arranged in a circular shape at the middle position of the annular outer surface of the flow guide cover 6111, and the flow guide grooves 6112 are arranged one by one with the liquid outlet 615; the lower end of the flow guide groove 6112 is fixedly connected to the rubber connecting plate 6113, which is used to A coolant liquid circulation channel is formed between the groove 6112 and the outer shell 61; when working, the mixed coolant flows out through the liquid outlet 615 and enters the inner part of the outer shell 61, and the gas-liquid separation is carried out by utilizing the gravity sedimentation principle. When the liquid coolant falls to the bottom of the outer shell 61, it will cause splashing, thereby generating mist, which will be discharged along with the gaseous coolant, thereby reducing the gas-liquid separation effect. By providing a guide mechanism 611, when the mixed coolant flows out of the liquid outlet 615, the mixed coolant will enter the guide groove 6112, and flow down along the inner wall of the outer shell 61 through the rubber connecting plate 6113, thereby solving the mist problem caused by the splashing effect of the free fall of the liquid coolant and improving the gas-liquid separation effect.

[0041] As an embodiment of the present invention, Figure 3 As shown, a wire mesh demister 66 is fixedly installed on the inner surface of the outer shell 61 near the upper position of the guide mechanism 611, which is used to remove the sputtered mist; during operation, although the mist caused by the sputtering is reduced by the guide mechanism 611, there is still a problem of mist caused by the sputtering of a small amount of coolant liquid that has not flowed down the guide groove 6112. By fixing the wire mesh demister 66 on the inner surface of the outer shell 61 near the upper position of the guide mechanism 611, the mist can be further removed, thereby further improving the gas-liquid separation effect.

[0042] Instructions for use: When the present invention is used, the chiller is first started through the control panel 4, and the chiller starts to work. The liquid refrigerant in the evaporator 13 of the chiller absorbs the heat of the water in the water tank 12 and starts to evaporate. The liquid refrigerant gradually evaporates and becomes gaseous, which is then sucked in and compressed by the compressor 7. The gaseous refrigerant absorbs heat and condenses into liquid through the water-cooled condenser 8. After passing through the throttle valve 10, it becomes a low-temperature and low-pressure refrigerant and enters the evaporator 13 for heat exchange to complete the cycle. However, when the chiller is just started, since the evaporator 13 is not working, the refrigerant in the pipeline is in liquid state. When the compressor 7 is started, a large amount of refrigerant liquid will enter the compressor 7. When the chiller is working normally, the refrigerant will evaporate through the evaporator 13. , when entering the compressor 7, it is usually a gaseous coolant and does not need to be separated from the gas and liquid. In the comparative patent, whether it is when the compressor 7 is started or when it is working normally, the coolant needs to be separated from the gas and liquid, which prolongs the residence time of the coolant in the pipeline, thereby reducing the working efficiency of the compressor 7 and increasing the operating load of the chiller. When the gas-liquid separation mechanism 6 of the present invention is in use, the coolant passing through the refrigerant inlet 62 will be detected by the gas-liquid two-phase flow sensor 63 (Chinese patent CN201110208471.8 Gas-liquid two-phase flow velocity and gas content sensor discloses this prior art). If the gas content of the entering coolant is not 100% after detection, that is, the coolant is gas-liquid When the mixture is formed, the control panel 4 receives the gas-liquid two-phase flow sensor 63 and controls the solenoid valve on the second gas refrigerant outlet 610 to close, and at the same time, the electromagnet 613 is energized. After the liquid in the gas-liquid mixed coolant enters the inner shell 64, it falls into the receiving tray 68. After accumulating to a certain weight, the receiving tray 68 overcomes the elastic force of the spring 614 due to the gravity of the liquid and descends, so that the spring 614 is in a compressed state, and the receiving tray 68 descends to a certain height. The two energized electromagnets 613 capture each other due to the mutually attractive magnetic field, so that the lower limit column 612 and the upper limit column 69 fit together and leak out of the liquid outlet 615. At this time, the mixture flows out through the liquid outlet 615 and enters the inside of the outer shell 61 , the gas-liquid separation is carried out by utilizing the principle of gravity sedimentation, the gaseous coolant is discharged through the first gaseous refrigerant outlet 65, and the liquid coolant is refluxed through the liquid refrigerant outlet 67. After the chiller has been working for a period of time, the coolant entering the refrigerant inlet 62 is usually in a gaseous state. After the gas-liquid two-phase flow sensor 63 detects that there is no liquid in the coolant, the control panel 4 receives the signal and controls the electromagnet 613 to cut off the power and open the solenoid valve at the same time. After the electromagnet 613 is cut off from the power, the receiving tray 68 rises under the elastic force of the spring 614 in the compressed state, covering the liquid outlet 615, so that the gaseous coolant is directly discharged through the second gaseous refrigerant outlet 610 without going through the gas-liquid separation step for discharge.

[0043] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An industrial chiller, comprising a housing (1), characterized in that: A fan (2) is fixedly mounted in the middle of the upper surface of the casing (1); a pressure gauge (5) is provided at the upper end of the front surface of the casing (1), and a control panel (4) is provided at the lower end of the front surface of the casing (1); a heat dissipation window (3) is provided in the middle of the outer surface of one side of the casing (1); a partition (11) is fixedly mounted in the middle of the interior of the casing (1), and the partition (11) divides the interior space of the casing (1) into an upper cavity and a lower cavity; a water tank (12) is fixedly mounted at one end of the lower cavity; a throttle valve (10) is connected to a position near the water tank (12) inside the lower cavity via a pipeline; one end of the throttle valve (10) is connected to a drying filter (9) via a pipeline; the water tank (12) The upper and lower parts of one side of the outer surface of the refrigerant are respectively provided with a water inlet (14) and a water outlet (15); an evaporator (13) is arranged inside the water tank (12); one end of the evaporator (13) passes through the partition (11) and is connected to a gas-liquid separation mechanism (6) through a pipeline, and the gas-liquid separation mechanism (6) is fixedly installed on one end of the upper cavity; one side of the gas-liquid separation mechanism (6) is connected to a compressor (7) through a pipeline; one side of the compressor (7) is connected to a water-cooled condenser (8) through a pipeline; the lower end of the water-cooled condenser (8) is connected to a drying filter (9) through a pipeline; the gas-liquid separation mechanism (6) comprises an outer shell (61), a refrigerant inlet (62), a gas-liquid two-phase flow passage (63), and a cooling medium (64). The outer shell (61) is provided with a first gas refrigerant outlet (65), a liquid refrigerant outlet (67), a receiving tray (68), an upper limit column (69), a second gas refrigerant outlet (610), a lower limit column (612), an electromagnet (613), a spring (614), and a liquid outlet (615); one end of the refrigerant inlet (62) provided on the outer shell (61) is connected to the evaporator (13) through a pipeline; the first gas refrigerant outlet (65) is provided through the upper part of one side of the outer surface of the outer shell (61); the liquid refrigerant outlet (67) is provided at the middle position of the lower end of the outer shell (61); the gas-liquid two-phase flow sensor (63) is fixedly installed on the refrigerant inlet (62) ); an inner shell (64) is fixedly installed at the top of the inner shell (61), and the upper end of the inner shell (64) is trumpet-shaped, and the lower end is straight-cylindrical; a plurality of liquid outlets (615) are evenly arranged in a ring shape on the outer surface of the inner shell (64) near the lower end; a lower limit post (612) is fixedly installed at the middle position of the bottom of the inner shell (64); a plurality of springs (614) are evenly fixed in a ring shape at the position of the bottom of the inner shell (64) near the lower limit post (612); a receiving tray (68) is fixedly installed at the upper end of the plurality of springs (614), and an upper limit post (69) is fixedly installed at the middle position of the lower surface of the receiving tray (68), and electromagnets (613) are arranged on the opposite surfaces of the upper limit post (69) and the lower limit post (612);A second gaseous refrigerant outlet (610) is fixedly mounted on the upper end of the other side of the outer surface of the inner shell (64), and one end of the second gaseous refrigerant outlet (610) extends to the outside of the outer shell (61); A flow guide mechanism (611) is fixedly installed at the lower end of the inner surface of the outer shell (61); the flow guide mechanism (611) comprises a flow guide cover (6111), a flow guide groove (6112), a rubber connecting plate (6113) and a mounting block (6114); a plurality of mounting blocks (6114) are evenly and fixedly installed in a circular shape at the lower edge of the annular outer surface of the flow guide cover (6111), and the flow guide cover (6111) is fixedly connected to the outer shell (61) via the mounting block (6114); a plurality of flow guide grooves (6112) are evenly arranged in a circular shape at the middle position of the annular outer surface of the flow guide cover (6111), and the flow guide grooves (6112) and the liquid outlets (615) are arranged one by one; a rubber connecting plate (6113) is fixedly connected to the lower end of the flow guide groove (6112) to form a coolant liquid circulation channel between the flow guide groove (6112) and the outer shell (61); The receiving tray (68) comprises a tray body (681), a mounting groove (682), a rubber sealing ring (683) and a polytetrafluoroethylene coating (685); the tray body (681) is fixedly mounted on the upper end of the spring (614); a mounting groove (682) is embedded in the middle of the annular outer surface of the tray body (681); a rubber sealing ring (683) is arranged inside the mounting groove (682), and a polytetrafluoroethylene coating (685) is coated on the outer surface of the rubber sealing ring (683) to reduce the friction between the rubber sealing ring (683) and the inner shell (64) while ensuring the sealing performance; An arc-shaped flow guide panel (684) is fixedly mounted on the upper surface of the tray body (681); a plurality of drainage grooves (686) are provided in an annular shape on the upper surface of the arc-shaped flow guide panel (684), and the drainage grooves (686) are provided in a one-to-one correspondence with the liquid outlets (615); When the upper limit post (69) and the lower limit post (612) are attached to each other, the liquid outlet (615) is just exposed and not blocked by the tray body (681). At this time, the upper surface of the tray body (681) and the lowest point of the liquid outlet (615) are on the same horizontal line; A wire mesh demister (66) is fixedly mounted on the inner surface of the outer shell (61) at a position above the flow guide mechanism (611) to remove splashed mist.

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