Flooded water chilling unit

Abstract

The utility model discloses a flooded water chilling unit which comprises a compressor, one side of the compressor is fixedly connected with an oil-liquid separator, one side of the oil-liquid separator is fixedly connected with an oil return pipeline, one side of the oil return pipeline is fixedly connected with an oil return valve, and the other side of the oil return valve is fixedly connected to one end of the upper portion of the compressor. The other side of the oil-liquid separator is fixedly connected with a liquid inlet pipeline, and the other side of the liquid inlet pipeline is fixedly connected with a condenser; the problem of mixing of lubricating oil and refrigerants is effectively solved through the oil-liquid separator arranged in the unit, redundant lubricating oil can automatically flow back to the compressor through accurate oil-liquid separation, it is guaranteed that the compressor is in a good lubricating state all the time, and the service life of the compressor is prolonged. And the service life of the compressor is prolonged, the maintenance cost is reduced, and the complexity of manual operation and the possibility of errors are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of chiller equipment, specifically a flooded chiller unit. Background Technology

[0002] Some existing traditional chiller units may lack efficient oil separation and oil return systems, leading to frequent problems such as insufficient compressor lubrication or lubricating oil contamination. This not only affects the unit's operating efficiency but also increases maintenance costs and downtime risks. Secondly, some units may not be equipped with drying and filtration equipment, resulting in impurities in the refrigerant gas not being effectively removed, affecting the cooling effect and unit lifespan. Finally, some units may have an open design for their cooling water systems, posing potential risks of water waste and environmental pollution. Utility Model Content

[0003] The purpose of this utility model is to provide a flooded chiller unit in order to solve the problems mentioned in the background.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flooded chiller unit, comprising: a compressor, an oil separator fixedly connected to one side of the compressor, a return oil pipe fixedly connected to one side of the oil separator, a return oil valve fixedly connected to one side of the return oil pipe, the other side of the return oil valve fixedly connected to one end above the compressor, an inlet pipe fixedly connected to the other side of the oil separator, and a condenser fixedly connected to the other side of the inlet pipe.

[0005] As a further embodiment of this utility model: a first water pump is fixedly connected to the left side of the condenser, a filter tower is fixedly connected to the other side of the first water pump, a cooling box is fixedly connected to the right side of the condenser, a cooling container is fixedly installed inside the cooling box, a liquid replenishment port is opened above the cooling container, a second water pump is fixedly connected to the other side of the cooling box, a water supply pipe is fixedly connected to the side of the second water pump, the other side of the water supply pipe is fixedly connected above the filter tower, a throttling valve is fixedly connected below the condenser, a return liquid pipe is fixedly connected below the throttling valve, and the other side of the return liquid pipe is fixedly connected to the other side of the compressor.

[0006] As a further embodiment of this utility model: a drying filter is fixedly connected to the other side of the condenser, an oil storage bottle is fixedly connected above the drying filter, a steam exhaust pipe is fixedly connected above the oil storage bottle, an oil drain pipe is fixedly connected to one end of the lower part of the oil storage bottle, and a full-liquid evaporator is fixedly connected to the side of the drying filter.

[0007] As a further embodiment of this utility model: the oil separator can separate refrigerant and lubricating oil, and excess lubricating oil flows back into the compressor through the oil return pipe and the oil return valve, while the liquid inlet pipe supplies high-temperature and high-pressure refrigerant to the condenser.

[0008] As a further embodiment of this utility model: cooling water enters the condenser through the filter tower and the first water pump; some refrigerant gas is input into the drying filter through the condenser; the heated cooling water in the condenser flows into the cooling box, which is filled with coolant, and exchanges heat with the heated cooling water; the heated cooling water is cooled again and then input into the filter tower through the second water pump and the water supply pipe to achieve water circulation; the high-temperature and high-pressure refrigerant in the condenser is reduced to a low-temperature and low-pressure refrigerant by the adjustment of the throttle valve, and then enters the compressor through the return pipe.

[0009] As a further improvement of this utility model: the drying filter can separate the residual liquid oil in the refrigeration gas, and the separated liquid oil will be temporarily stored in the oil storage bottle. When the oil storage bottle is full, the oil can be drained through the oil drain pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. In this utility model, the oil separator built into the unit effectively solves the problem of mixing of lubricating oil and refrigerant. Through precise oil separation, excess lubricating oil can automatically flow back to the compressor, ensuring that the compressor is always in a good lubrication state, extending the service life of the compressor, reducing maintenance costs, and reducing the complexity and possibility of human operation errors.

[0012] 2. The introduction of the drying filter further improves the purity of the refrigerant gas. It can effectively remove residual liquid oil and other impurities from the refrigerant gas, preventing these substances from damaging the evaporator and other components. At the same time, the design of the oil storage bottle also facilitates the collection and disposal of liquid oil, avoiding the problems of liquid oil accumulation and leakage in the system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a full-fill water chiller unit according to the present invention;

[0014] Figure 2 This is a side view of the structure of a full-filled water chiller unit described in this utility model;

[0015] Figure 3 This is a schematic diagram of the cooling tank in a full-fill water chiller unit according to the present invention;

[0016] Figure 4 This is a schematic diagram of the structure of the drying filter in a full-fill water chiller unit according to the present invention.

[0017] In the diagram: 1. Compressor; 2. Oil separator; 3. Oil return pipe; 4. Oil return valve; 5. Liquid inlet pipe; 6. Condenser; 7. First water pump; 8. Filter tower; 9. Cooling tank; 10. Cooling box; 11. Liquid replenishment port; 12. Second water pump; 13. Water supply pipe; 14. Throttling valve; 15. Liquid return pipe; 16. Drying filter; 17. Oil storage bottle; 18. Exhaust pipe; 19. Oil drain pipe; 20. Fully loaded evaporator. Detailed Implementation

[0018] 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.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0020] Reference Figures 1 to 4In this embodiment of the present invention, a flooded chiller unit includes: a compressor 1, an oil separator 2 fixedly connected to one side of the compressor 1, an oil return pipe 3 fixedly connected to one side of the oil separator 2, an oil return valve 4 fixedly connected to one side of the oil return pipe 3, an oil return valve 4 fixedly connected to one end above the compressor 1 on the other side, an inlet pipe 5 fixedly connected to the other side of the oil separator 2, and a condenser 6 fixedly connected to the other side of the inlet pipe 5.

[0021] The above scheme is adopted: through the design of the oil return pipe 3 and the oil return valve 4, excess lubricating oil can be smoothly returned to the compressor, ensuring the stable operation of the compressor. At the same time, the liquid inlet pipe 5 delivers the high-temperature and high-pressure refrigerant to the condenser 6, providing the necessary conditions for the subsequent cooling process.

[0022] A first water pump 7 is fixedly connected to the left side of the condenser 6, and a filter tower 8 is fixedly connected to the other side of the first water pump 7. A cooling box 9 is fixedly connected to the right side of the condenser 6. A cooling box 10 is fixedly installed inside the cooling box 9. A liquid replenishment port 11 is opened above the cooling box 10. A second water pump 12 is fixedly connected to the other side of the cooling box 9. A water supply pipe 13 is fixedly connected to the side of the second water pump 12. The other side of the water supply pipe 13 is fixedly connected to the filter tower 8. A throttle valve 14 is fixedly connected to the bottom of the condenser 6. A return pipe 15 is fixedly connected to the bottom of the throttle valve 14. The other side of the return pipe 15 is fixedly connected to the other side of the compressor 1.

[0023] The above scheme is adopted: the combination of the first water pump 7 and the filter tower 8 ensures the cleanliness and circulation of cooling water and improves condensation efficiency. The cooling box 10 in the cooling tank 9 exchanges heat with the heated cooling water by filling it with coolant, realizing the reuse of cooling water and saving water resources. The second water pump 12 and the water pipeline 13 complete the circulation and transportation of cooling water, ensuring the continuous operation of the system.

[0024] A drying filter 16 is fixedly connected to the other side of the condenser 6. An oil storage bottle 17 is fixedly connected above the drying filter 16. An exhaust pipe 18 is fixedly connected above the oil storage bottle 17. An oil drain pipe 19 is fixedly connected to one end of the lower part of the oil storage bottle 17. A full liquid evaporator 20 is fixedly connected to the side of the drying filter 16.

[0025] Using the above solution: the drying filter 16 can effectively separate the residual liquid oil in the refrigeration gas, preventing it from entering the subsequent system and causing adverse effects. The oil storage bottle 17 serves as a temporary storage container to collect and store the separated liquid oil. When a certain amount is reached, the oil can be drained through the oil drain pipe 19, ensuring the cleanliness and efficient operation of the system.

[0026] The oil separator 2 can separate refrigerant and lubricating oil. Excess lubricating oil flows back into the compressor 1 through the oil return pipe 3 and the oil return valve 4. The liquid inlet pipe 5 delivers high-temperature and high-pressure refrigerant to the condenser 6.

[0027] The above solution ensures the recycling of lubricating oil through a return oil system. This design not only improves the compressor's operating efficiency but also extends its service life.

[0028] Cooling water enters the condenser 6 through the filter tower 8 and the first water pump 7. Part of the refrigerant gas is fed into the drying filter 16 through the condenser 6. The heated cooling water in the condenser 6 flows into the cooling box 9. The cooling box 10 is filled with coolant, which exchanges heat with the heated cooling water. After being cooled again, the heated cooling water is fed into the filter tower 8 through the second water pump 12 and the water supply pipe 13 to achieve water circulation. The high-temperature and high-pressure refrigerant in the condenser 6 is reduced to a low-temperature and low-pressure refrigerant by the adjustment of the throttle valve 14, and then enters the compressor 1 through the return pipe 15.

[0029] By adopting the above scheme, the design of the throttle valve 14 and the return pipe 15 enables the high-temperature and high-pressure refrigerant to be depressurized to a low-temperature and low-pressure state and re-enter the compressor for the next cycle, thus achieving efficient energy utilization.

[0030] The drying filter 16 can separate the residual liquid oil in the refrigeration gas. The separated liquid oil will be temporarily stored in the oil storage bottle 17. When the oil storage bottle 17 is full, the oil can be drained through the oil drain pipe 19.

[0031] The above scheme is adopted: the oil storage bottle 17 serves as a temporary storage container to collect and store the separated liquid oil. When a certain amount is reached, the oil can be drained through the oil drain pipe 19, ensuring the cleanliness and efficient operation of the system. At the same time, the addition of the full liquid evaporator 20 provides the necessary conditions for the evaporation process of the unit, ensuring the realization of the cooling effect.

[0032] The working principle of this utility model is as follows: After the unit starts, the compressor 1 begins to work, compressing the refrigerant into a high-temperature and high-pressure state. Subsequently, this high-temperature and high-pressure refrigerant enters the condenser 6 through the liquid inlet pipe 5. In the condenser 6, the refrigerant exchanges heat with the cooling water from the filter tower 8 and pressurized by the first water pump 7, transferring heat to the cooling water while cooling and condensing into a liquid state. At the same time, some of the refrigerant gas may also be introduced into the drying filter 16 for further processing. The cooling water that has completed heat exchange in the condenser 6 flows into the cooling tank 9, where it exchanges heat with the refrigerant in the cooling box 10, causing the heated cooling water to cool down again. Subsequently, this cooling water is sent back to the filter tower 8 through the second water pump 12 and the water supply pipe 13, forming a cycle of cooling water use. Meanwhile, the liquid refrigerant condensed in the condenser 6 is depressurized to a low-temperature and low-pressure state by the adjustment of the throttle valve 14, and flows along... The liquid return pipe 15 flows back to the suction side of the compressor 1, ready to be compressed again. During the operation of the compressor 1, the lubricating oil produced mixes with the refrigerant. These mixtures are separated by the oil separator 2. The excess lubricating oil separated is returned to the designated position of the compressor 1 through the oil return pipe 3 and the oil return valve 4 to ensure the normal lubrication of the compressor. In addition, the drying filter 16 is responsible for further processing the refrigerant gas to remove any residual liquid oil. This separated liquid oil is temporarily stored in the oil storage bottle 17. When the oil storage bottle 17 is full, the oil can be drained through the oil drain pipe 19. The purified refrigerant gas continues to flow to the full liquid evaporator 20 for the next refrigeration cycle. Throughout the process, the exhaust pipe 18 can be used to discharge non-condensable gases in the system to ensure the efficient operation of the system. At the same time, the liquid replenishment port 11 is used to add or replace the coolant in the cooling box 10 to maintain its heat exchange efficiency.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flooded chiller unit, characterized in that, include: A compressor (1) is fixedly connected to an oil separator (2) on one side, and a return oil pipe (3) is fixedly connected to one side of the oil separator (2). A return oil valve (4) is fixedly connected to one side of the return oil pipe (3). The other side of the return oil valve (4) is fixedly connected to one end above the compressor (1). An inlet pipe (5) is fixedly connected to the other side of the oil separator (2). A condenser (6) is fixedly connected to the other side of the inlet pipe (5).

2. The flooded chiller unit according to claim 1, characterized in that, A first water pump (7) is fixedly connected to the left side of the condenser (6), and a filter tower (8) is fixedly connected to the other side of the first water pump (7). A cooling box (9) is fixedly connected to the right side of the condenser (6), and a cooling box (10) is fixedly installed inside the cooling box (9). A liquid replenishment port (11) is opened above the cooling box (10). A second water pump (12) is fixedly connected to the other side of the cooling box (9), and a water supply pipe (13) is fixedly connected to the side of the second water pump (12). The other side of the water supply pipe (13) is fixedly connected above the filter tower (8). A throttle valve (14) is fixedly connected below the condenser (6), and a return pipe (15) is fixedly connected below the throttle valve (14). The other side of the return pipe (15) is fixedly connected to the other side of the compressor (1).

3. A flooded chiller unit according to claim 2, characterized in that, A drying filter (16) is fixedly connected to the other side of the condenser (6), an oil storage bottle (17) is fixedly connected above the drying filter (16), a steam exhaust pipe (18) is fixedly connected above the oil storage bottle (17), an oil drain pipe (19) is fixedly connected to one end of the lower part of the oil storage bottle (17), and a full liquid evaporator (20) is fixedly connected to the side of the drying filter (16).

4. A flooded chiller unit according to claim 1, characterized in that, The oil separator (2) can separate refrigerant and lubricating oil. Excess lubricating oil flows back into the compressor (1) through the return oil pipe (3) and the return oil valve (4). The liquid inlet pipe (5) delivers high-temperature and high-pressure refrigerant to the condenser (6).

5. A flooded chiller unit according to claim 3, characterized in that, Cooling water enters the condenser (6) through the filter tower (8) and the first water pump (7). Part of the refrigerant gas is input into the drying filter (16) through the condenser (6). The heated cooling water in the condenser (6) flows into the cooling box (9). The cooling box (10) is filled with coolant, which exchanges heat with the heated cooling water. After the heated cooling water is cooled again, it is input into the filter tower (8) through the second water pump (12) and the water supply pipe (13) to achieve water circulation. The high temperature and high pressure refrigerant in the condenser (6) is reduced to low temperature and low pressure by the adjustment of the throttle valve (14), and then enters the compressor (1) through the return pipe (15).

6. A flooded chiller unit according to claim 3, characterized in that, The drying filter (16) can separate the residual liquid oil in the refrigeration gas. The separated liquid oil will be temporarily stored in the oil storage bottle (17). When the oil storage bottle (17) is full, the oil can be drained through the oil drain pipe (19).

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