A water-cooled screw chiller

Abstract

The utility model discloses a water-cooled screw chiller, comprising a refrigeration unit, wherein one side of the lower end of the refrigeration unit is connected to a cooling tower via a cooling water outlet pipe and a cooling water inlet pipe, one side of the refrigeration unit is also provided with a mixing water tank via a chilled water outlet pipe and a chilled water inlet pipe, one end of the mixing water tank is connected with industrial production equipment via an equipment inlet pipe and an equipment outlet pipe, water pumps are provided on the cooling water outlet pipe, the cooling water inlet pipe and the equipment inlet pipe, and a stirring mechanism is also provided at the bottom of the mixing water tank. The utility model adopts a water-cooled screw chiller, so that heat exchange is stable, efficiency is long-lasting, and maintenance is convenient, and a stirring mechanism is also provided at the bottom of the mixing water tank, so that the water inside the mixing water tank can be stirred evenly, and the stirring rate is fast, which is beneficial to improving the efficiency of water-cooled heat exchange.

Description

Technical Field

[0001] The utility model relates to the technical field of chillers, in particular to a water-cooled screw chiller. Background Art

[0002] Water-cooled screw chillers are also a type of chiller. Since its main component uses a screw compressor, it can be called a water-cooled screw chiller. Its chilled water outlet temperature ranges from 3°C to 20°C. It can be widely used in various industrial refrigeration processes such as plastics, electroplating, electronics, chemicals, pharmaceuticals, printing, food processing, etc. that require the use of chilled water, or in various central air-conditioning projects such as large shopping malls, hotels, factories, hospitals, etc. that require the use of chilled water for centralized cooling.

[0003] A water-cooled screw chiller with application number 202120677769.2 in the prior art includes a body, a partition is provided inside the body, and the inside of the body is divided into an expansion valve chamber, an evaporator, a screw compressor chamber and a condenser chamber by the partition, the expansion valve chamber is located at the top of the evaporator and the condenser chamber, and the evaporator is located on the left side of the condenser chamber. The water-cooled screw chiller can fix dehumidifiers of different specifications inside the dehumidifier slot by setting a sliding block, and then cooperate with the servo motor to drive the dehumidifier to move back and forth left and right, so that the water droplets inside the screw compressor chamber can be fully absorbed, creating a good working environment for the screw compressor, making it safer and simpler to operate. However, the water inside the mixing water tank cannot be stirred evenly, and the stirring rate is slow, which affects the efficiency of water-cooled heat exchange. Utility Model Content

[0004] The utility model aims to provide a water-cooled screw chiller to solve the problem in the prior art that the water inside the mixing water tank cannot be stirred evenly and the stirring rate is slow, thereby affecting the efficiency of water cooling heat exchange.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water-cooled screw chiller, comprising a refrigeration unit, wherein one side of the lower end of the refrigeration unit is connected to a cooling tower via a cooling water outlet pipe and a cooling water inlet pipe, one side of the refrigeration unit is also provided with a mixing water tank via a chilled water outlet pipe and a chilled water inlet pipe, one end of the mixing water tank is connected to industrial production equipment via an equipment inlet pipe and an equipment outlet pipe, water pumps are provided on the cooling water outlet pipe, the cooling water inlet pipe and the equipment inlet pipe, and a stirring mechanism is also provided at the bottom of the mixing water tank.

[0006] Furthermore, a first valve is provided on the pipelines on both sides of the water pump, and a second valve is provided on the cooling water inlet pipe, the chilled water outlet pipe and the equipment outlet pipe.

[0007] Furthermore, a feed water inlet is provided on one side of the upper end of the mixing water tank, and a float valve is provided between the feed water inlet and the mixing water tank.

[0008] Furthermore, the stirring mechanism at the bottom of the mixing water tank includes a stirring shaft that is rotated by a stirring motor and arranged at the bottom of the mixing water tank, and a stirring blade is provided at the upper end of the stirring shaft.

[0009] Furthermore, the stirring blade includes a first stirring blade and a second stirring blade, and the second stirring blade is vertically arranged on the upper part of the first stirring blade.

[0010] Furthermore, the control ends of the cooling tower, water pump, refrigeration unit and mixing water tank are all electrically connected to a control box, and the control box is a PLC control cabinet.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is connected with a cooling tower through a cooling water outlet pipe and a cooling water inlet pipe on one side of the lower end of the refrigeration unit; a mixing water tank is also arranged on one side of the refrigeration unit through a chilled water outlet pipe and a chilled water inlet pipe; one end of the mixing water tank is connected with industrial production equipment through an equipment inlet pipe and an equipment outlet pipe, so that a water-cooled screw chiller is adopted, the whole machine has a compact structure, relatively stable heat exchange, long-lasting efficiency, and convenient and quick maintenance.

[0013] The utility model also provides a stirring mechanism at the bottom of the mixing water tank. The stirring mechanism at the bottom of the mixing water tank includes a stirring shaft that is rotated by a stirring motor and is arranged at the bottom of the mixing water tank. A stirring blade is provided at the upper end of the stirring shaft. The stirring blade includes a first stirring blade and a second stirring blade. The second stirring blade is vertically arranged on the upper part of the first stirring blade to increase the stirring area of ​​the blade, so that the water inside the mixing water tank can be stirred evenly. The stirring rate is fast, which is beneficial to improving the efficiency of water cooling heat exchange.

[0014] The utility model provides a water supply inlet at one side of the upper end of the mixing water tank, so that water can be easily added to the mixing water tank for water cooling, and a float valve is provided between the water supply inlet and the mixing water tank, so as to automatically add water to the mixing water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is the overall structural front view of the utility model;

[0017] Figure 2It is the overall structural control diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the mixing water tank of the utility model.

[0019] In the figure: 1. control box; 2. refrigeration unit; 3. mixing water tank; 4. water pump; 5. industrial production equipment; 6. first valve; 7. feed water inlet; 8. cooling water outlet pipe; 9. cooling water inlet pipe; 10. chilled water outlet pipe; 11. chilled water inlet pipe; 12. equipment outlet pipe; 13. equipment inlet pipe; 14. cooling tower; 15. stirring shaft; 16. first stirring blade; 17. second stirring blade; 18. stirring motor; 19. float valve; 20. second valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 , Figure 3 In the embodiment of the utility model, a water-cooled screw chiller comprises a refrigeration unit 2, one side of the lower end of the refrigeration unit 2 is connected to a cooling tower 14 through a cooling water outlet pipe 8 and a cooling water inlet pipe 9, one side of the refrigeration unit 2 is also provided with a mixing water tank 3 through a chilled water outlet pipe 10 and a chilled water inlet pipe 11, for mixing water, one end of the mixing water tank 3 is connected to an industrial production equipment 5 through an equipment inlet pipe 13 and an equipment outlet pipe 12, a water pump 4 is provided on the cooling water outlet pipe 8, the cooling water inlet pipe 11 and the equipment inlet pipe 13, a first valve 6 is provided on the pipelines on both sides of the water pump 4, a second valve 20 is provided on the cooling water inlet pipe 9, the chilled water outlet pipe 10 and the equipment outlet pipe 12, the control ends of the cooling tower 14, the water pump 4, the valve, the refrigeration unit 2 and the mixing water tank 3 are all electrically connected to the control box 1, and the control box 1 is a PLC control cabinet for easy overall control.

[0022] like Figure 3As shown, in order to be able to quickly stir the water inside the mixing water tank 3, a stirring mechanism is also provided at the bottom of the mixing water tank 3. The stirring mechanism at the bottom of the mixing water tank 3 includes a stirring shaft 15 that is rotated by a stirring motor 18 and arranged at the bottom of the mixing water tank 3. A stirring blade is provided at the upper end of the stirring shaft 15. The stirring blade includes a first stirring blade 16 and a second stirring blade 17. The second stirring blade 17 is vertically arranged on the upper part of the first stirring blade 16 to increase the stirring area of ​​the blade, so that the stirring blade is driven by the stirring motor 18 to rotate at a uniform speed, so that the water inside the mixing water tank 3 can be stirred evenly. The stirring rate is fast, which is beneficial to improving the efficiency of water cooling heat exchange.

[0023] like Figure 1 and Figure 3 As shown, in order to facilitate the replenishment of water into the mixing water tank 3 for water cooling, a supply water inlet 7 is provided on one side of the upper end of the mixing water tank 3, so that it is convenient to replenish water into the mixing water tank 3 for water cooling, and a float valve 19 is provided between the supply water inlet 7 and the mixing water tank 3 to facilitate automatic water replenishment into the mixing water tank 3.

[0024] The working principle and use process of the utility model are as follows: when in use, a cooling tower 14 is connected to one side of the lower end of the refrigeration unit 2 through a cooling water outlet pipe 8 and a cooling water inlet pipe 9, and a mixing water tank 3 is also provided on one side of the refrigeration unit 2 through a chilled water outlet pipe 10 and a chilled water inlet pipe 11. One end of the mixing water tank 3 is connected to the industrial production equipment 5 through an equipment inlet pipe 13 and an equipment outlet pipe 12, so that a water-cooled screw chiller is adopted, the whole machine has a compact structure, relatively stable heat exchange, long-lasting efficiency, and convenient and quick maintenance. A stirring mechanism is also provided at the bottom of the mixing water tank 3, so that the water inside the mixing water tank 3 can be stirred evenly, and the stirring rate is relatively fast, which is beneficial to improving the efficiency of water-cooled heat exchange.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A water-cooled screw chiller, comprising a refrigeration unit (2), characterized in that: One side of the lower end of the refrigeration unit (2) is connected to a cooling tower (14) via a cooling water outlet pipe (8) and a cooling water inlet pipe (9). One side of the refrigeration unit (2) is also provided with a mixing water tank (3) via a chilled water outlet pipe (10) and a chilled water inlet pipe (11). One end of the mixing water tank (3) is connected to the industrial production equipment (5) via an equipment inlet pipe (13) and an equipment outlet pipe (12). A water pump (4) is provided on the cooling water outlet pipe (8), the chilled water inlet pipe (11) and the equipment inlet pipe (13). A stirring mechanism is also provided at the bottom of the mixing water tank (3).

2. A water-cooled screw chiller according to claim 1, characterized in that: The pipelines on both sides of the water pump (4) are each provided with a first valve (6), and the cooling water inlet pipe (9), the chilled water outlet pipe (10) and the equipment outlet pipe (12) are each provided with a second valve (20).

3. A water-cooled screw chiller according to claim 1, characterized in that: A supply water inlet (7) is provided on one side of the upper end of the mixing water tank (3), and a float valve (19) is provided between the supply water inlet (7) and the mixing water tank (3).

4. A water-cooled screw chiller according to claim 3, characterized in that: The stirring mechanism at the bottom of the mixing water tank (3) comprises a stirring shaft (15) arranged at the bottom of the mixing water tank (3) and rotated by a stirring motor (18), and a stirring blade is provided at the upper end of the stirring shaft (15).

5. A water-cooled screw chiller according to claim 4, characterized in that: The stirring blade comprises a first stirring blade (16) and a second stirring blade (17), and the second stirring blade (17) is vertically arranged on the upper part of the first stirring blade (16).

6. The water-cooled screw chiller according to claim 1, characterized in that: The control ends of the cooling tower (14), the water pump (4), the refrigeration unit (2) and the mixing water tank (3) are all electrically connected to the control box (1), and the control box (1) is a PLC control cabinet.

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