Multi-input and multi-output waterway water-cooled screw water chiller

Abstract

The utility model discloses a kind of water-cooled screw water chiller of multiple inlet and outlet waterway, including rack, the upper side rear end of the rack is equipped with screw compressor and condensing shell, the upper of rack is equipped with filter, still including multi-pipeline mechanism;Multi-pipeline mechanism includes annular pipe one, annular pipe two, communicating pipe one and communicating pipe two, the annular pipe one and annular pipe two are symmetrically set in the inside of condensing shell horizontally.This utility model is through multiple inlet and outlet waterway, utilize the different heat exchange length of pipeline to make the outlet temperature of different outlet water pipeline be different, to improve the domestic water and heating demand of device, while device carries out impurity filtering to frozen oil of separation backflow by filter element, avoid impurity to produce interference to subsequent screw compressor operation, and filter component is installed by screw element, and it is convenient to disassemble and clean operation in later period.

Description

Technical Field

[0001] This utility model relates to the technical field of water chiller units, specifically a water-cooled screw chiller unit with multiple inlet and outlet water channels. Background Technology

[0002] A chiller is a device that achieves heat exchange through refrigerant circulation, and is mainly used in central air conditioning systems, industrial cooling, and other fields. In the prior art, patent publication number CN 212806121 U discloses a water-cooled screw chiller unit for refrigeration and air conditioning. During the refrigeration process, the condenser achieves heat exchange and cooling of high-temperature and high-pressure steam refrigerant through a set of water pipes. The condenser outlet water temperature is the same, which cannot well meet the needs of domestic water and heating. At the same time, during the refrigerant refrigeration cycle, a portion of the refrigerant oil in the screw compressor is carried along by the refrigerant. Some equipment separates the refrigerant oil from the refrigerant by installing a gas-liquid separator, and then transports the refrigerant oil to the screw compressor through pipelines. However, the refrigerant oil separation lacks a filter element, which makes it easy for impurities carried in the refrigerant oil to interfere with the operation of the screw compressor. Utility Model Content

[0003] The technical problem this utility model aims to solve is to overcome the existing defects and provide a water-cooled screw chiller unit with multiple inlet and outlet water channels. This device utilizes the different heat exchange lengths of the pipes to achieve different outlet water temperatures in different outlet pipes, thereby improving the unit's domestic water and heating needs. At the same time, the device uses filter elements to filter impurities from the separated and returned refrigerant oil, preventing impurities from interfering with the operation of the subsequent screw compressor. Furthermore, the filter components are installed using threaded elements, making disassembly and cleaning convenient in the future, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a water-cooled screw chiller unit with multiple inlet and outlet water channels, including a frame and control switches, wherein a screw compressor and a condenser shell are provided at the upper rear end of the frame, a filter is installed above the frame, and a multi-pipe mechanism is also included. The multi-pipe structure includes annular pipe one, annular pipe two, connecting pipe one, and connecting pipe two. Annular pipe one and annular pipe two are symmetrically arranged laterally inside the condenser shell. Annular pipe two is located on the side of the adjacent annular pipe one away from the lateral center of the condenser shell. There are four annularly distributed connecting pipe one between annular pipe one and four annularly distributed connecting pipe two between annular pipe two. The left and right ends of the connecting pipe two pass through the adjacent annular pipe one.

[0005] Furthermore, the frame is equipped with an evaporator, and the outer arc surface of the condenser shell is equipped with a gas-liquid separator. The outlet of the screw compressor is connected to the inlet of the condenser shell via a pipe. The outlet of the condenser shell is connected to the inlet of the gas-liquid separator via a pipe. The outlet of the gas-liquid separator is connected to the inlet of the evaporator via a pipe. An expansion valve is connected in series inside the pipe. The outlet of the evaporator is connected to the inlet of the screw compressor via a pipe, thus realizing the circulating refrigeration of the water-cooled screw chiller unit.

[0006] Furthermore, the outlet of the gas-liquid separator is connected to the inlet of the screw compressor via pipe three, so that the separated refrigeration oil flows back into the screw compressor.

[0007] Furthermore, both the upper and lower ends of the filter are equipped with threaded cylinders, and the outer sides of the threaded cylinders are threaded with connecting cylinders. The opposite ends of the two connecting cylinders are equipped with flexible hoses through rotary joints. The upper flexible hose is connected to the lower end of pipe three, and the lower flexible hose is connected to the oil return pipe of the screw compressor. The filter components are installed through threaded elements, which facilitates disassembly and cleaning operations later.

[0008] Furthermore, the outer arc surface of the threaded cylinder is movably fitted with a rubber sealing ring to seal the connection gap between the threaded cylinder and the connecting cylinder in the multi-inlet and multi-outlet water-cooled screw chiller unit.

[0009] Furthermore, the multi-pipe mechanism also includes an inlet pipe 1, an outlet pipe 1, an inlet pipe 2, and an outlet pipe 2. The inlet pipe 1, outlet pipe 1, inlet pipe 2, and outlet pipe 2 are all installed through the inner wall of the condenser shell. The front end of the inlet pipe 1 is connected to the left annular pipe 1, the front end of the outlet pipe 1 is connected to the right annular pipe 1, the front end of the inlet pipe 2 is connected to the left annular pipe 2, and the front end of the outlet pipe 2 is connected to the right annular pipe 2, so that multiple sets of cooling water in the water-cooled screw chiller unit can enter the condenser shell at the same time.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. When the water-cooled screw chiller unit is in use, the multi-inlet and multi-outlet water pipeline design of the multi-pipeline mechanism utilizes the different heat exchange lengths of the pipelines to make the outlet water temperature of different outlet pipelines different, thereby improving the domestic water and heating needs of the unit. 2. When the water-cooled screw chiller unit is in use, the device filters impurities from the separated and returned refrigerant oil through a filter element to prevent impurities from interfering with the operation of the subsequent screw compressor. The filter component is installed through a threaded element, making disassembly and cleaning operations convenient in the later stages. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the condenser shell of this utility model; Figure 3 This is a schematic diagram showing the disassembled structure of the filter connection element of this utility model.

[0012] In the diagram: 1. Frame, 2. Control switch, 3. Screw compressor, 4. Condenser shell, 5. Multi-pipe mechanism, 51. Ring pipe one, 52. Ring pipe two, 53. Connecting pipe one, 54. Connecting pipe two, 55. Inlet pipe one, 56. Outlet pipe one, 57. Inlet pipe two, 58. Outlet pipe two, 6. Gas-liquid separator, 7. Evaporator, 8. Pipe one, 9. Pipe two, 10. Pipe three, 11. Pipe four, 12. Expansion valve, 13. Pipe four, 14. Filter, 15. Threaded cylinder, 16. Connecting cylinder, 17. Rotary joint, 18. Hose, 19. Rubber sealing ring. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-3 This embodiment provides a technical solution: a multi-inlet, multi-outlet water-cooled screw chiller unit, including a frame 1 and a control switch 2. A screw compressor 3 and a condenser shell 4 are provided at the upper rear end of the frame 1. A filter 14 is installed above the frame 1. An evaporator 7 is provided inside the frame 1. A gas-liquid separator 6 is provided on the outer arc surface of the condenser shell 4. The first outlet of the screw compressor 3 is connected to the second inlet of the condenser shell 4 through a pipe 8. The second outlet of the condenser shell 4 is connected to the third inlet of the gas-liquid separator 6 through a pipe 9. The third outlet of the gas-liquid separator 6 is connected to the fourth inlet of the evaporator 7 through a pipe 11. An expansion valve 12 is connected in series inside the pipe 11. The fourth outlet of the evaporator 7 is connected to the first inlet of the screw compressor 3 through a pipe 13.

[0015] This also includes a multi-pipe mechanism 5; the multi-pipe mechanism 5 includes annular pipe 51, annular pipe 52, connecting pipe 53, and connecting pipe 54. Annular pipe 51 and annular pipe 52 are symmetrically arranged laterally inside the condenser shell 4. Annular pipe 52 is located on the side of adjacent annular pipe 51 away from the lateral center of the condenser shell 4. Four annular connecting pipes 53 are evenly distributed between annular pipes 51, and four annular connecting pipes 54 are evenly distributed between annular pipes 52. The left and right ends of the connecting pipes 54 pass through adjacent... The annular pipe 51; the multi-pipe mechanism 5 also includes an inlet pipe 55, an outlet pipe 56, an inlet pipe 57, and an outlet pipe 58. The inlet pipe 55, the outlet pipe 56, the inlet pipe 57, and the outlet pipe 58 are all installed through the inner wall of the condenser shell 4. The front end of the inlet pipe 55 is connected to the annular pipe 51 on the left, the front end of the outlet pipe 56 is connected to the annular pipe 51 on the right, the front end of the inlet pipe 57 is connected to the annular pipe 52 on the left, and the front end of the outlet pipe 58 is connected to the annular pipe 52 on the right.

[0016] The outlet of the gas-liquid separator 6 is connected to the inlet of the screw compressor 3 via pipe 10. Both ends of the filter 14 are equipped with threaded cylinders 15, and rubber sealing rings 19 are movably fitted onto the outer arc surface of each threaded cylinder 15. Connecting cylinders 16 are threaded to the outer sides of each threaded cylinder 15. Flexible hoses 18 are connected to the opposite ends of the two connecting cylinders 16 via rotary joints 17. The upper hose 18 is connected to the lower end of pipe 10, and the lower hose 18 is connected to the oil return pipe of the screw compressor 3. This device filters impurities from the separated and returned refrigerant oil through the filter element, preventing impurities from interfering with the operation of the subsequent screw compressor. Furthermore, the filter components are installed via threaded elements, facilitating disassembly and cleaning later.

[0017] The working principle of this utility model is as follows: When using a water-cooled screw chiller unit, control switch 2 starts the screw compressor 3. Low-pressure, high-temperature refrigerant vapor enters from the inlet of the screw compressor 3. The screw compressor 3 operates by having a pair of male and female rotors mesh and rotate within the casing, forming a periodically changing sealed volume to compress the gas. This allows the high-temperature, high-pressure refrigerant vapor to enter the condenser shell 4 from the outlet of the screw compressor 3 via pipe 8. Inside the condenser shell 4, the high-temperature, high-pressure refrigerant vapor is transformed into a medium-temperature, high-pressure gaseous refrigerant through heat exchange, and then enters the gas-liquid separator 6 via pipe 9. The gas-liquid separator 6 uses internal components to separate the gas and liquid phases based on their specific gravity and centrifugal force differences. The refrigerant is separated from the refrigeration oil carried in the medium-temperature, high-pressure gaseous refrigerant. The separated refrigeration oil enters the screw compressor 3 through pipe 3 10 for recycling. The medium-temperature, high-pressure gaseous refrigerant enters the evaporator 7 through pipe 4 11. During the process of passing through pipe 4 11, the medium-temperature, high-pressure gaseous refrigerant is transformed into a low-temperature, low-pressure gaseous refrigerant through the expansion valve 12 on pipe 4 11. The low-temperature, low-pressure gaseous refrigerant absorbs heat through the evaporator 7, thus transforming into a low-pressure, high-temperature gaseous refrigerant. The low-pressure, high-temperature gaseous refrigerant enters the air inlet 1 of the screw compressor 3 through pipe 4 13, realizing the refrigeration cycle operation of the water-cooled screw chiller unit. When the water-cooled screw chiller unit is in use, the condenser shell 4 is equipped with two sets of inlet and outlet water pipe assemblies. Inlet pipe 1 (55) and outlet pipe 1 (56) are connected to an external water supply pipe, and inlet pipe 2 (57) and outlet pipe 2 (58) are connected to another external water supply pipe. By connecting these two sets of inlet and outlet water pipe assemblies to external water supply pipes with different requirements, water in the supply pipes enters through the corresponding inlet pipe 1 (55) or inlet pipe 2 (57). Water in inlet pipe 1 (55) passes through the left annular pipe 1 (51), four annularly distributed connecting pipes 1 (53), and the right annular pipe 1 (51) before exiting through the outlet pipe. Water is discharged from pipe 56. Water in inlet pipe 2 57 is discharged from outlet pipe 2 58 through four annular connecting pipes 2 54 and 2 annular pipe 2 52 on the left and right respectively. When the water passes through the connecting pipes, it absorbs the heat from the high-temperature and high-pressure refrigerant vapor passing through the condenser shell 4 through heat transfer (connecting pipes 2 54 and 1 53 are both made of copper metal, which has good thermal conductivity). The different pipe lengths of connecting pipes 2 54 and 1 53 result in different temperature rises of the external water after passing through the condenser shell 4, thus achieving different temperature water supply needs through multiple inlet and outlet water paths. The refrigerant oil flowing through pipe 3 10 is filtered for impurities by the filter screen of filter 14, preventing the refrigerant oil flowing back into the screw compressor 3 from interfering with the operation of the screw compressor 3 due to excessive impurities. After the multi-inlet and multi-outlet water-cooled screw chiller unit has been in use for a period of time, the operator rotates the upper and lower connecting cylinders 16 to make them connect with the corresponding threaded cylinders 15, thereby separating them from the threaded cylinders 15, releasing the installation limit on filter 14, and then removing filter 14 from the device and cleaning its internal filter screen. Then filter 14 is installed using the same principle, and the rubber sealing ring 19 is used to seal the contact gap between connecting cylinder 16 and threaded cylinder 15 by utilizing the compressive elastic deformation of rubber molecules, thereby improving the tightness of filter 14 installation.

[0018] It is worth noting that the screw compressor 3 disclosed in the above embodiments can be CSH8553-110Y-20P, and the control switch 2 is provided with a control button corresponding to the screw compressor 3 for controlling its switch.

[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A water-cooled screw chiller unit with multiple inlet and outlet water channels, comprising a frame (1) and a control switch (2), wherein a screw compressor (3) and a condenser shell (4) are provided at the upper rear end of the frame (1), and a filter (14) is installed above the frame (1), characterized in that: It also includes multi-pipeline mechanisms (5); The multi-pipe mechanism (5) includes annular pipe one (51), annular pipe two (52), connecting pipe one (53) and connecting pipe two (54). Annular pipe one (51) and annular pipe two (52) are symmetrically arranged laterally inside the condenser shell (4). Annular pipe two (52) are located on the side of adjacent annular pipe one (51) away from the lateral center of the condenser shell (4). There are four annularly evenly distributed connecting pipe one (53) between annular pipe one (51) and four annularly evenly distributed connecting pipe two (54) between annular pipe two (52). The left and right ends of the connecting pipe two (54) pass through the adjacent annular pipe one (51).

2. The water-cooled screw chiller unit with multiple inlet and outlet water channels according to claim 1, characterized in that: The frame (1) is equipped with an evaporator (7) inside, and a gas-liquid separator (6) is provided on the outer arc surface of the condenser shell (4). The outlet of the screw compressor (3) is connected to the inlet of the condenser shell (4) through a pipe (8). The outlet of the condenser shell (4) is connected to the inlet of the gas-liquid separator (6) through a pipe (9). The outlet of the gas-liquid separator (6) is connected to the inlet of the evaporator (7) through a pipe (11). An expansion valve (12) is connected in series inside the pipe (11). The outlet of the evaporator (7) is connected to the inlet of the screw compressor (3) through a pipe (13).

3. A water-cooled screw chiller unit with multiple inlet and outlet water channels according to claim 2, characterized in that: The outlet of the gas-liquid separator (6) is connected to the inlet of the screw compressor (3) via pipe three (10).

4. A water-cooled screw chiller unit with multiple inlet and outlet water channels according to claim 3, characterized in that: The filter (14) has threaded cylinders (15) at both the upper and lower ends. The outer side of each threaded cylinder (15) is threaded with a connecting cylinder (16). The opposite ends of the two connecting cylinders (16) are connected to hoses (18) through a rotary joint (17). The upper hose (18) is connected to the lower end of the pipe (10), and the lower hose (18) is connected to the oil return pipe of the screw compressor (3).

5. A water-cooled screw chiller unit with multiple inlet and outlet water channels according to claim 4, characterized in that: The outer arc surface of the threaded cylinder (15) is movably fitted with rubber sealing rings (19).

6. A water-cooled screw chiller unit with multiple inlet and outlet water channels according to claim 1, characterized in that: The multi-pipe mechanism (5) also includes an inlet pipe (55), an outlet pipe (56), an inlet pipe (57), and an outlet pipe (58). The inlet pipe (55), outlet pipe (56), inlet pipe (57), and outlet pipe (58) are all installed through the inner wall of the condenser shell (4). The front end of the inlet pipe (55) is connected to the left annular pipe (51), the front end of the outlet pipe (56) is connected to the right annular pipe (51), the front end of the inlet pipe (57) is connected to the left annular pipe (52), and the front end of the outlet pipe (58) is connected to the right annular pipe (52).

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