High-efficiency energy-saving water-cooled industrial water chiller

Abstract

The application discloses a high-efficiency energy-saving water-cooled water chiller for industrial use, which can effectively reduce the temperature of refrigerant by twice cooling and temperature reduction treatment of the pressurized refrigerant, and further reduce the temperature of the refrigerant after the refrigerant is collided and released by an expansion valve, so that the refrigeration effect is effectively improved, and the equipment functionality is improved; the water chiller comprises a compressor, a heat exchanger, an expansion valve and a refrigeration device which are sequentially connected through pipelines, and refrigerant forms a circulating flow state in the compressor, the heat exchanger, the expansion valve and the refrigeration device; the heat exchanger can perform water cooling and temperature reduction treatment on the refrigerant compressed by the compressor; and the refrigeration device can perform heat exchange treatment on the cold water for a workshop and the refrigerant expanded and released by the expansion valve, so that the temperature of the cold water for the workshop is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration equipment, in particular to an efficient and energy-saving water-cooled industrial water chiller. BACKGROUND

[0002] In industrial manufacturing, a large amount of heat is generated in the process of equipment operation and product cooling, and if the heat is not dissipated or cooled in time, it will affect the normal operation of the equipment, thereby affecting the production efficiency or product quality. Therefore, the water chiller is an essential auxiliary equipment in industrial manufacturing.

[0003] The water chiller can be divided into air-cooled water chiller and water-cooled water chiller according to its cooling method. The water-cooled water chiller mainly cools the compressed high-temperature and high-pressure liquid refrigerant through water, so that the temperature of the refrigerant is lowered, and the subsequent expansion of the refrigerant forms low-temperature and normal-pressure gaseous refrigerant. Then, the cooling of the water for the workshop is realized through heat exchange. However, the existing water chiller can only cool the compressed high-temperature and high-pressure refrigerant once, that is, through water cooling. Therefore, the temperature change range of the high-pressure refrigerant obtained is small, which leads to poor refrigeration effect on the water for the workshop. In order to further improve the refrigeration effect, the present application is designed. SUMMARY

[0004] To solve the above technical problems, the present application provides an efficient and energy-saving water-cooled industrial water chiller.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] An efficient and energy-saving water-cooled industrial water chiller, comprising a compressor, a heat exchanger, an expansion valve and a refrigeration device connected in sequence through pipelines, and the refrigerant forms a circulating flow state in the compressor, the heat exchanger, the expansion valve and the refrigeration device. The heat exchanger can cool and cool the refrigerant compressed by the compressor, and the refrigeration device can exchange heat with the refrigerant expanded and released by the expansion valve, so as to lower the temperature of the water for the workshop.

[0007] The pipeline between the heat exchanger and the expansion valve is provided with a first pipe, and the pipeline between the expansion valve and the refrigeration device is provided with a second pipe. The outer wall of the second pipe is provided with a hole, and a first branch pipe is communicated through the hole. The output end of the first branch pipe is communicated with a spiral heat exchange pipe, and the spiral heat exchange pipe is wound on the outer wall of the first pipe. The output end of the spiral heat exchange pipe is provided with a second branch pipe, and the output end of the second branch pipe is communicated with the input end of the compressor.

[0008] Preferably, the input end of the first branch pipe is opposite to the output end of the expansion valve, so that the refrigerant discharged by the expansion valve can flow into the first branch pipe, and the first branch pipe is provided with a flow valve;

[0009] The outer side of the spiral heat exchange pipe is sleeved with a temperature insulation cover.

[0010] Preferably, the refrigerator comprises a flat cold water tank, a flat refrigeration tank is arranged in the cold water tank, two first water guide pipes are arranged on the outer side wall of the cold water tank in communication, one of the first water guide pipes is used for discharging the cold water for workshop into the cold water tank, and the other first water guide pipe is used for discharging the cooled cold water in the cold water tank, the output end of the second pipe is communicated with the refrigeration tank, and the flow directions of the cold water in the cold water tank and the refrigerant in the refrigeration tank are opposite.

[0011] The pipeline between the refrigerator and the compressor is provided as a third pipe, the input end of the third pipe is communicated with the refrigeration tank, the output end of the second branch pipe is obliquely communicated and mounted on the third pipe along the flow direction of the refrigerant in the third pipe, and the pipeline between the compressor and the heat exchanger is provided as a fourth pipe.

[0012] Preferably, the heat exchanger comprises an outer cylinder, a heat exchange cylinder is arranged in the outer cylinder, the cross section of the heat exchange cylinder is flat, and the cross section of the heat exchange cylinder is hollow, the hollow space can be used for refrigerant circulation, support rings are sleeved on the outer wall of the heat exchange cylinder on the upper side and the lower side, the support rings are rotationally connected with the heat exchange cylinder, the support rings are internally hollow, a plurality of through holes are arranged between the support rings and the heat exchange cylinder, the support rings are communicated with the refrigerant circulation space in the heat exchange cylinder through the through holes, a plurality of support arms are fixed on the outer wall of the heat exchange cylinder, the outer ends of the support arms are fixed on the inner wall of the outer cylinder, the input end of the first pipe is communicated with one of the support rings on the heat exchange cylinder, and the output end of the fourth pipe is communicated with another support ring on the heat exchange cylinder.

[0013] The bottom of the outer cylinder is provided with a water inlet pipe, the outer cylinder is provided with a spraying structure, the spraying structure is communicated with the water inlet pipe, and the top of the outer cylinder is communicated with a drain pipe.

[0014] Preferably, the spraying structure comprises a bottom disc fixed on the bottom of the heat exchange cylinder, a rotating cylinder is fixed in the middle of the bottom disc, the output end of the water inlet pipe is connected and communicated with one end surface of the rotating cylinder, the water inlet pipe rotates relative to the rotating cylinder, a vertical pipe is arranged on the other end surface of the rotating cylinder and communicated with the rotating cylinder, the vertical pipe is located in the middle of the heat exchange cylinder, a plurality of spiral plates are arranged in the rotating cylinder, a plurality of right-angle branch pipes are communicated with the outer wall of the water inlet pipe in the outer cylinder, and the right-angle branch pipes are located outside the heat exchange cylinder.

[0015] A plurality of long nozzles are arranged on the outer wall of the vertical pipe and the side wall of the right-angle branch pipe, the shape of the long nozzle is narrow inside and wide outside, and the inner wall of the long nozzle is arranged in an arc shape.

[0016] Preferably, the vertical pipe is rotationally connected with the rotating cylinder, and a connecting column is connected between the vertical pipe and the water inlet pipe, and the connecting column penetrates the middle part of the rotating cylinder and is separated from each other.

[0017] Preferably, a plurality of air holes are formed on the heat exchange cylinder, the inner wall of the air hole is inclined, and the middle part and the outer side of the heat exchange cylinder are communicated through the air hole, a gas guide ring is fixed in the outer cylinder, the gas guide ring is hollow inside, the bottom of the gas guide ring is densely provided with air holes, and a bend pipe is communicated on the side wall of the gas guide ring, and the outer end of the bend pipe extends to the outside of the outer cylinder.

[0018] Preferably, a water hole is formed on the bottom plate, and a second water guide pipe is communicated at the bottom of the outer cylinder.

[0019] Compared with the prior art, the heat exchanger can perform water cooling and temperature reduction on the refrigerant, so that the purpose of one-time temperature reduction is realized, at this time, the refrigerant is in a normal temperature and high pressure state, then the refrigerant flows into the expansion valve through the first pipeline, the expansion valve expands and releases the refrigerant in the normal temperature and high pressure state, so that the refrigerant quickly changes from liquid state to gas state and flows into the second pipeline, the temperature of the refrigerant in the second pipeline is reduced, part of the low-temperature refrigerant in the second pipeline flows into the spiral heat exchange pipe through the first branch pipeline, the spiral heat exchange pipe cools and processes the refrigerant in the first pipeline in the normal temperature and high pressure state, so that the two-time temperature reduction of the refrigerant is realized before the refrigerant enters the expansion valve, at this time, the refrigerant in the first pipeline is in a low-temperature and high-pressure state, the refrigerant in this state is expanded and released through the expansion valve again, so that the temperature of the refrigerant in the second pipeline and the refrigerant entering the refrigerator is further reduced, at this time, the temperature of the cold water for workshop use in the refrigerator is further reduced, so that the refrigeration effect is effectively improved, and the functionality of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is Figure 1 is a sectional view of the temperature separation cover;

[0023] Figure 3 is Figure 1 is a sectional view of the refrigerator;

[0024] Figure 4 Figure 1 Figure 3 is a schematic view of an enlarged structure of the heat exchanger in the application;

[0025] Figure 5 Figure 4 Figure 4 is a schematic view of an enlarged structure of the internal structure of the outer tube in the application;

[0026] Figure 6 Figure 5 Figure 5 is a schematic view of a sectional structure of the heat exchange tube in the application;

[0027] Figure 7 Figure 5 Figure 6 is a schematic view of an enlarged structure of the gas guide ring in the application from the bottom;

[0028] In the drawings, 1 is a compressor, 2 is a heat exchanger, 3 is an expansion valve, 4 is a refrigerator, 5 is a first pipeline, 6 is a second pipeline, 7 is a first branch pipeline, 8 is a spiral heat exchange tube, 9 is a second branch pipeline, 10 is a temperature insulation cover, 11 is a flow valve, 12 is a cold water tank, 13 is a refrigeration tank, 14 is a first water guide pipe, 15 is a third pipeline, 16 is a fourth pipeline, 17 is an outer tube, 18 is a heat exchange tube, 19 is a support ring, 20 is a support arm, 21 is a water inlet pipe, 22 is a water outlet pipe, 23 is a base plate, 24 is a rotating tube, 25 is a spiral plate, 26 is a vertical pipe, 27 is a right-angle auxiliary pipe, 28 is a connecting column, 29 is a gas hole, 30 is a gas guide ring, 31 is an elbow, 32 is a water hole, and 33 is a second water guide pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments of the application.

[0030] In the description of the application, it should be noted that the orientation or position relationship indicated by “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0031] ​​​​In the description of the present application, it should be noted that unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The embodiments are written in a progressive manner.

[0032] As shown in Figures 1-2 The present application is a high-efficiency energy-saving industrial water-cooled chiller, which comprises a compressor 1, a heat exchanger 2, an expansion valve 3 and a refrigerator 4 connected in sequence through pipelines, and the refrigerant forms a circulating flow state in the compressor 1, the heat exchanger 2, the expansion valve 3 and the refrigerator 4. The heat exchanger 2 can perform water-cooling temperature reduction treatment on the refrigerant compressed by the compressor 1, and the refrigerator 4 can perform heat exchange treatment on the workshop cold water and the refrigerant released by the expansion valve 3, so as to reduce the temperature of the workshop cold water.

[0033] The pipeline between the heat exchanger 2 and the expansion valve 3 is provided with a first pipe 5, the pipeline between the expansion valve 3 and the refrigerator 4 is provided with a second pipe 6, the outer wall of the second pipe 6 is provided with a hole and is communicated with a first branch pipe 7 through the hole, the output end of the first branch pipe 7 is communicated with a spiral heat exchange pipe 8, the spiral heat exchange pipe 8 is wound on the outer wall of the first pipe 5, the output end of the spiral heat exchange pipe 8 is provided with a second branch pipe 9, and the output end of the second branch pipe 9 is communicated with the input end of the compressor 1.

[0034] Specifically, the refrigerant is pressurized by the compressor 1, thereby forming high-temperature and high-pressure liquid refrigerant, the heat exchanger 2 performs water-cooling temperature reduction treatment on the refrigerant, thereby achieving the purpose of primary cooling, at this time the refrigerant is in a normal-temperature and high-pressure state, then the refrigerant flows into the expansion valve 3 through the first pipe 5, the expansion valve 3 releases the refrigerant in the normal-temperature and high-pressure state, thereby making the refrigerant quickly change from liquid state to gas state, the temperature of the refrigerant is reduced and flows into the refrigerator 4 through the second pipe 6, the low-temperature refrigerant in the refrigerator 4 cools the workshop cold water in it, and part of the low-temperature refrigerant in the second pipe 6 flows into the spiral heat exchange pipe 8 through the first branch pipe 7, the spiral heat exchange pipe 8 cools the refrigerant in the first pipe 5 in the normal-temperature and high-pressure state, thereby achieving secondary cooling treatment on the refrigerant before it enters the expansion valve 3, at this time the refrigerant in the first pipe 5 is in a low-temperature and high-pressure state, the refrigerant in this state is released by the expansion valve 3 again, thereby further reducing the temperature of the refrigerant in the second pipe 6 and the refrigerant entering the refrigerator 4, at this time the temperature of the workshop cold water in the refrigerator 4 is further reduced, thereby effectively improving the refrigeration effect and the functionality of the equipment.

[0035] The refrigerant inside the spiral heat exchange tube 8 can be discharged into the compressor 1 through the second branch pipe 9.

[0036] Preferred, such as Figure 2 As shown, the input end of the first branch pipe 7 is opposite to the output end of the expansion valve 3, so that the refrigerant discharged by the expansion valve 3 can flow into the first branch pipe 7. A flow valve 11 is installed on the first branch pipe 7.

[0037] The spiral heat exchange tube 8 is fitted with a heat insulation cover 10.

[0038] Specifically, by setting the direction of the input end of the first branch pipe 7, the refrigerant discharged from the output end of the expansion valve 3 can be easily allowed to flow laterally and enter the first branch pipe 7, thereby enabling some refrigerant to flow along the first branch pipe 7 and preventing the refrigerant from directly entering the refrigerator 4 through the second pipe 6. By setting the flow valve 11, the flow rate of the refrigerant in the first branch pipe 7 can be easily controlled, thereby controlling the temperature of the refrigerant secondary cooling in the first pipe 5. The heat insulation cover 10 can provide heat insulation protection for the spiral heat exchange tube 8.

[0039] Preferred, such as Figures 1-3 As shown, the chiller 4 includes a flat cold water tank 12, inside which is a flat refrigeration box 13. Two first water guide pipes 14 are connected to the outer wall of the cold water tank 12. One of the first water guide pipes 14 is used to discharge cold water for the workshop into the cold water tank 12, and the other first water guide pipe 14 is used to discharge the cooled cold water in the cold water tank 12. The output end of the second pipe 6 is connected to the refrigeration box 13, wherein the flow direction of the cold water in the cold water tank 12 and the refrigerant in the refrigeration box 13 is opposite.

[0040] The pipeline between the refrigerator 4 and the compressor 1 is a third pipeline 15. The input end of the third pipeline 15 is connected to the refrigeration box 13. The output end of the second branch pipeline 9 is inclined and connected to the third pipeline 15 along the refrigerant flow direction. The pipeline between the compressor 1 and the heat exchanger 2 is a fourth pipeline 16.

[0041] Specifically, by adopting a flat-shaped cold water tank 12 and a refrigeration box 13, the heat exchange area between the cold water in the cold water tank 12 and the refrigerant in the refrigeration box 13 can be increased, thereby improving the cooling effect of the refrigerant on the cold water and increasing the heat exchange efficiency. The cooled cold water in the cold water tank 12 flows out through a first water guide pipe 14 and is used in the workshop. The used cold water then flows back into the cold water tank 12 through another first water guide pipe 14 for circulating cooling. By making the second branch pipe 9 and the third pipe 15 inclined, the refrigerant in the second branch pipe 9 can flow smoothly into the third pipe 15 and the mutual impact of the refrigerants can be reduced.

[0042] Preferred, such as Figures 4-6 As shown, the heat exchanger 2 includes an outer cylinder 17, inside which a heat exchange cylinder 18 is disposed. The heat exchange cylinder 18 has a flat cross-section and is hollow, allowing refrigerant to circulate. Support rings 19 are fitted on both the upper and lower sides of the outer wall of the heat exchange cylinder 18, and the support rings 19 are rotatably connected to the heat exchange cylinder 18. The support rings 19 are hollow inside, and multiple through holes are provided between the support rings 19 and the heat exchange cylinder 18. The support rings 19 communicate with the refrigerant circulation space inside the heat exchange cylinder 18 through the through holes. Multiple support arms 20 are fixed on the outer wall of the heat exchange cylinder 18, and the outer ends of the support arms 20 are fixed on the inner wall of the outer cylinder 17. The input end of the first pipe 5 is connected to one support ring 19 on the heat exchange cylinder 18, and the output end of the fourth pipe 16 is connected to another support ring 19 on the heat exchange cylinder 18.

[0043] The outer cylinder 17 is provided with a water inlet pipe 21 at the bottom, a spray structure is provided inside the outer cylinder 17 and the spray structure is connected to the water inlet pipe 21, and a drain pipe 22 is connected to the top of the outer cylinder 17.

[0044] Specifically, water from the external water tank can be pumped into the spray structure through the inlet pipe 21. The spray structure sprays the water out in a mist. The refrigerant, compressed by the compressor 1 at high temperature and high pressure, flows into the heat exchange cylinder 18 through the fourth pipe 16 and its upper support ring 19. The refrigerant in the heat exchange cylinder 18 flows to the expansion valve 3 through the first pipe 5 and its upper support ring 19. The water mist in the outer cylinder 17 can cool the heat exchange cylinder 18, thereby cooling the refrigerant in the heat exchange cylinder 18. Since the cross-section of the heat exchange cylinder 18 is flat, this reduces the pressure on the refrigerant. The thickness of the refrigerant inside the heat exchange cylinder 18 improves the heat exchange effect. Since the heat exchange takes the form of water mist, it facilitates the rapid formation of steam from the water mist. This allows the water to absorb a large amount of heat through the change in the state of the water, avoiding the situation where the water's state remains unchanged during direct cooling, resulting in less heat absorption and thus affecting the cooling effect. At the same time, rotating the heat exchange cylinder 18 helps to rapidly diffuse and evaporate its own heat, and also facilitates the uniformity of water mist adhesion on the side wall of the heat exchange cylinder 18, thereby further improving the cooling effect.

[0045] Steam and heat flow naturally upwards within the outer cylinder 17 and return to the external water tank through the drain pipe 22, thereby absorbing the steam through the water tank and avoiding water waste.

[0046] Preferred, such as Figure 6 As shown, the spray structure includes a chassis 23 fixed to the bottom of the heat exchange cylinder 18, a rotating cylinder 24 fixed in the middle of the chassis 23, the output end of the water inlet pipe 21 connected to and communicating with one end face of the rotating cylinder 24, the water inlet pipe 21 and the rotating cylinder 24 rotating relative to each other, a vertical pipe 26 provided on the other end face of the rotating cylinder 24, and the rotating cylinder 24 and the vertical pipe 26 communicating with each other, the vertical pipe 26 being located in the middle of the heat exchange cylinder 18, a plurality of spiral plates 25 being provided inside the rotating cylinder 24, a plurality of right-angle secondary pipes 27 being connected to the outer wall of the water inlet pipe 21 inside the outer cylinder 17, the right-angle secondary pipes 27 being located on the outside of the heat exchange cylinder 18;

[0047] Multiple long nozzles are provided on the outer wall of the vertical pipe 26 and the side wall of the right-angle secondary pipe 27. The long nozzles are narrow on the inside and wide on the outside, and the inner wall of the long nozzles is arc-shaped.

[0048] Specifically, by setting the inner wall shape and nozzle shape of the long nozzle, water can be easily diffused outwards in a scattering manner when passing through the long nozzle, thereby quickly forming a water mist and covering a large area.

[0049] When water flows into the rotating cylinder 24 through the inlet pipe 21, the water can drive the rotating cylinder 24 to rotate through the spiral plate 25, thereby causing the rotating cylinder 24 to drive the chassis 23 and the heat exchange cylinder 18 to rotate, achieving the purpose of automatic rotation of the heat exchange cylinder 18. This avoids the structural complexity of adding a power unit and control unit to the heat exchange cylinder 18. The water in the rotating cylinder 24 enters the vertical pipe 26, and at the same time, the water in the inlet pipe 21 can flow into the right-angle secondary pipe 27. The water in the vertical pipe 26 and the right-angle secondary pipe 27 can be sprayed out through the long nozzle, thereby spraying the water mist towards the inner and outer walls of the heat exchange cylinder 18, which facilitates the water mist to quickly and completely adhere to the inner and outer walls of the heat exchange cylinder 18 and quickly carry out heat exchange.

[0050] Preferred, such as Figure 6 As shown, the vertical pipe 26 is rotatably connected to the rotating cylinder 24, and a connecting column 28 is connected between the vertical pipe 26 and the water inlet pipe 21. The connecting column 28 passes through the middle of the rotating cylinder 24 and is separated from it.

[0051] Specifically, the water inlet pipe 21 can support the vertical pipe 26 through the connecting column 28, so that the vertical pipe 26 remains fixed when the rotating cylinder 24 rotates. At this time, the vertical pipe 26 can rotate relative to the heat exchange cylinder 18, so that the water mist sprayed from the long nozzle on the vertical pipe 26 can fully adhere to the inner wall of the heat exchange cylinder 18.

[0052] Preferred, such as Figures 6-7 As shown, the heat exchange cylinder 18 has multiple air holes 29. The inner wall of the air holes 29 is inclined, and the middle and outer sides of the heat exchange cylinder 18 are connected through the air holes 29. A guide ring 30 is fixed inside the outer cylinder 17. The guide ring 30 is hollow inside and has air holes densely distributed at the bottom. A bent pipe 31 is connected to the side wall of the guide ring 30, and the outer end of the bent pipe 31 extends to the outer side of the outer cylinder 17.

[0053] Specifically, as the steam rises inside the outer cylinder 17, it carries the air inside the outer cylinder 17 upwards. External air can be replenished into the outer cylinder 17 through the bend 31, the air guide ring 30, and the air hole. At this time, the airflow flows inside the outer cylinder 17, thereby simultaneously performing air cooling treatment on the heat exchange cylinder 18. Since the inner wall of the air hole 29 is inclined, when the heat exchange cylinder 18 rotates, some of the air outside the heat exchange cylinder 18 can be introduced into the middle of the heat exchange cylinder 18 through the inner wall of the air hole 29, thereby simultaneously performing air cooling treatment on the inner and outer walls of the heat exchange cylinder 18.

[0054] Preferred, such as Figure 6 As shown, a water hole 32 is provided on the chassis 23, and a second water pipe 33 is connected to the bottom of the outer cylinder 17.

[0055] Specifically, the water mist inside the outer cylinder 17 that has not yet evaporated condenses into water droplets and can flow back into the external water tank through the water hole 32 and the second water guide pipe 33.

[0056] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-efficiency and energy-saving industrial water-cooled chiller, comprising a compressor (1), a heat exchanger (2), an expansion valve (3), and a refrigerator (4) connected in sequence by pipelines, wherein the refrigerant forms a circulating flow state within the compressor (1), the heat exchanger (2), the expansion valve (3), and the refrigerator (4), the heat exchanger (2) is capable of water cooling the refrigerant compressed by the compressor (1), and the refrigerator (4) is capable of heat exchange between the chilled water for workshop use and the refrigerant released by the expansion valve (3), thereby reducing the temperature of the chilled water for workshop use; Its features are, The pipeline between the heat exchanger (2) and the expansion valve (3) is designated as the first pipeline (5), and the pipeline between the expansion valve (3) and the refrigerator (4) is designated as the second pipeline (6). The outer wall of the second pipeline (6) has a hole and is connected to the first branch pipeline (7). The output end of the first branch pipeline (7) is connected to the spiral heat exchange tube (8). The spiral heat exchange tube (8) is wound around the outer wall of the first pipeline (5). The output end of the spiral heat exchange tube (8) is provided with a second branch pipeline (9). The output end of the second branch pipeline (9) is connected to the input end of the compressor (1). The input end of the first branch pipe (7) is opposite to the output end of the expansion valve (3), so that the refrigerant discharged by the expansion valve (3) can flow into the first branch pipe (7). A flow valve (11) is installed on the first branch pipe (7). The outer side of the spiral heat exchange tube (8) is fitted with a heat insulation cover (10); The refrigerator (4) includes a flat cold water tank (12), and a flat refrigeration box (13) is provided inside the cold water tank (12). Two first water guide pipes (14) are connected to the outer wall of the cold water tank (12). One of the first water guide pipes (14) is used to discharge cold water for the workshop into the cold water tank (12), and the other first water guide pipe (14) is used to discharge the cooled cold water in the cold water tank (12). The output end of the second pipe (6) is connected to the refrigeration box (13). The cold water in the cold water tank (12) and the refrigerant in the refrigeration box (13) flow in opposite directions. The pipeline between the refrigerator (4) and the compressor (1) is a third pipeline (15). The input end of the third pipeline (15) is connected to the refrigeration box (13). The output end of the second branch pipeline (9) is inclined and connected to the third pipeline (15) along the refrigerant flow direction in the third pipeline (15). The pipeline between the compressor (1) and the heat exchanger (2) is a fourth pipeline (16). The heat exchanger (2) includes an outer cylinder (17), and a heat exchange cylinder (18) is provided inside the outer cylinder (17). The heat exchange cylinder (18) has a flat cross-section and can be used for refrigerant flow. Support rings (19) are provided on the upper and lower sides of the outer wall of the heat exchange cylinder (18), and the support rings (19) are rotatably connected to the heat exchange cylinder (18). The support rings (19) are hollow inside, and multiple through holes are provided between the support rings (19) and the heat exchange cylinder (18). The support rings (19) are connected to the refrigerant flow space inside the heat exchange cylinder (18) through the through holes. Multiple support arms (20) are fixed on the outer wall of the heat exchange cylinder (18). The outer ends of the support arms (20) are fixed on the inner wall of the outer cylinder (17). The input end of the first pipe (5) is connected to one support ring (19) on the heat exchange cylinder (18), and the output end of the fourth pipe (16) is connected to another support ring (19) on the heat exchange cylinder (18). The bottom of the outer cylinder (17) is provided with a water inlet pipe (21), the outer cylinder (17) is provided with a spray structure, and the spray structure is connected to the water inlet pipe (21). The top of the outer cylinder (17) is connected with a drain pipe (22). The spray structure includes a chassis (23) fixed to the bottom of the heat exchange cylinder (18), a rotating cylinder (24) fixed in the middle of the chassis (23), the output end of the water inlet pipe (21) connected to and communicating with one end face of the rotating cylinder (24), the water inlet pipe (21) and the rotating cylinder (24) rotate relative to each other, a vertical pipe (26) is provided on the other end face of the rotating cylinder (24), and the rotating cylinder (24) and the vertical pipe (26) are interconnected. The vertical pipe (26) is located in the middle of the heat exchange cylinder (18), a plurality of spiral plates (25) are provided inside the rotating cylinder (24), a plurality of right-angle secondary pipes (27) are connected to the outer wall of the water inlet pipe (21) inside the outer cylinder (17), and the right-angle secondary pipes (27) are located on the outside of the heat exchange cylinder (18); Multiple long nozzles are provided on the outer wall of the vertical pipe (26) and the side wall of the right-angle secondary pipe (27). The long nozzles are narrow on the inside and wide on the outside, and the inner wall of the long nozzles is arc-shaped.

2. The high-efficiency and energy-saving industrial water-cooled chiller as described in claim 1, characterized in that, The vertical pipe (26) is rotatably connected to the rotating cylinder (24), and a connecting column (28) is connected between the vertical pipe (26) and the water inlet pipe (21). The connecting column (28) passes through the middle of the rotating cylinder (24) and is separated from each other.

3. A high-efficiency and energy-saving industrial water-cooled chiller as described in claim 2, characterized in that, The heat exchange cylinder (18) is provided with multiple air holes (29). The inner wall of the air holes (29) is inclined, and the middle and outer sides of the heat exchange cylinder (18) are connected through the air holes (29). A guide ring (30) is fixed inside the outer cylinder (17). The guide ring (30) is hollow inside. The bottom of the guide ring (30) is densely covered with air holes. A bent pipe (31) is connected to the side wall of the guide ring (30). The outer end of the bent pipe (31) extends to the outer side of the outer cylinder (17).

4. A high-efficiency and energy-saving industrial water-cooled chiller as described in claim 3, characterized in that, A water hole (32) is provided on the chassis (23), and a second water pipe (33) is connected to the bottom of the outer cylinder (17).

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