Screw type water cooling unit

Abstract

The utility model relates to a screw type water chilling unit which comprises an installation frame, an evaporator structure, a condenser structure, a screw compression structure and an evaporator structure, the condenser structure and the screw compression structure are communicated with each other, an evaporator is installed on a condenser, evaporator end covers are arranged at the two ends of the evaporator, chilled water inlet pipes are symmetrically arranged on the surface of the evaporator, and the chilled water inlet pipes are communicated with the screw compression structure. A rotating shaft is transversely arranged in the evaporator in a rotating mode, first fan blades are arranged on the surface of the rotating shaft and correspond to the chilled water inlet pipe, a plurality of sets of evaporator plates are further arranged on the inner wall of the evaporator, the rotating shaft penetrates through the evaporator plates but is not connected with the evaporator plates, and second fan blades are further arranged on the surface of the rotating shaft. The second fan blades make contact with the side faces of the evaporator sheets, and the first fan blades and the second fan blades make contact with the inner wall of the evaporator. The screw water-cooling unit solves the problem that the heat transfer efficiency of an evaporator is reduced due to the fact that scale in water cannot be thoroughly removed even if a water softening device is applied to an existing screw water-cooling unit.

Description

Technical Field

[0001] The utility model relates to the technical field of water chillers, in particular to a screw type water cooling unit. Background Art

[0002] Screw water-cooling units are widely used in a wide range of fields. The principle is divided into four processes: compression, condensation, throttling, and evaporation. However, when water enters the evaporator through the chilled water inlet pipe, due to the large amount of calcium and magnesium salts in the water, scale is easily formed, which leads to pipe blockage.

[0003] Therefore, in order to prevent the occurrence of scale, Chinese patent CN207132743U, a closed cooling system for a screw chiller, points out that high-temperature and high-pressure gas exchanges heat with cooling water in the condenser, and the cooling water after absorbing heat is mixed with tap water softened by a water softener and then enters the cooler through a water inlet pipe for circulating cooling; secondly, Chinese patent CN212566072U, a new ground source heat pump device using a single screw chiller, points out that impurities in the water can be removed by a water softening device to prevent the formation of scale and clogging the device. Both use a water softening device to remove impurities in the water, but although this removal method is effective, it cannot completely remove impurities. Therefore, a small amount of scale enters the evaporator and adheres to the inner wall of the evaporator and the surface of the evaporator plate, thereby reducing the heat transfer efficiency.

[0004] Therefore, in order to prevent a small amount of scale from adhering to the inner wall of the evaporator and the surface of the evaporator plate, thereby affecting the heat transfer efficiency, a screw water cooling unit is proposed to solve the technical problems in the prior art. Utility Model Content

[0005] In view of the deficiencies of the existing technology, the utility model provides a screw water cooling unit, which solves the problem that even with the use of a softening water device in the existing screw water cooling unit, scale in the water cannot be completely removed, resulting in reduced heat transfer efficiency of the evaporator.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a screw-type water-cooling unit, comprising a mounting frame, an evaporator structure, a condenser structure, and a screw compression structure, wherein the evaporator structure, the condenser structure, and the screw compression structure are interconnected, and the evaporator structure comprises an evaporator, an evaporator end cover, a chilled water inlet pipe, a rotating shaft, a first fan blade, a second fan blade, and an evaporator plate; the evaporator is mounted on the condenser, evaporator end covers are provided at both ends of the evaporator, and chilled water inlet pipes are symmetrically provided on the surface of the evaporator, wherein a rotating shaft is provided for horizontal rotation inside the evaporator, A first fan blade is provided on the surface of the rotating shaft, and the first fan blade corresponds to the chilled water inlet pipe, and a plurality of evaporator plates are provided on the inner wall of the evaporator, wherein the rotating shaft passes through the evaporator plates but is not connected to the evaporator plates, and a second fan blade is provided on the surface of the rotating shaft, and the second fan blade contacts the side of the evaporator plate, and both the first fan blade and the second fan blade contact the inner wall of the evaporator, and the first fan blade and the second fan blade rotate through the entry of chilled water, and the swirl direction is to the right, wherein a mounting seat is installed on the upper end face of the evaporator, and a screw compression structure is installed on the upper end of the mounting seat.

[0007] Through the above technical solution, further, the edges of the surfaces of the evaporator plates are cut, and the cut portions of two adjacent groups of evaporator plates are in a symmetrical relationship.

[0008] Furthermore, the mounting frame includes a mounting base, a support seat, a movable plate, and a spring; a support seat is provided at the lower end of the mounting base, and a movable plate is movably provided inside the support seat, wherein a spring is provided on the end face of the support seat, the upper end of the spring is in contact with the lower end of the movable plate, and a condenser structure is installed on the upper end face of the mounting base.

[0009] As a preferred technical solution, the condenser structure includes a condenser, a condenser end cover, a cooling water circulation pipe, a baffle, and a circulation pipe; the condenser is installed at the upper end of the mounting base, and condenser end covers are installed at the two ports of the condenser, one group of condenser end cover end faces is provided with a cooling water circulation pipe, and a baffle is provided on the inner side of the condenser end cover, and the baffle divides the interior of the condenser end cover into two cavities, wherein the two groups of cooling water circulation pipes correspond to the two cavities respectively, wherein a circulation pipe is provided inside the condenser, and the interior of the other group of condenser end covers is a cavity, and an evaporator mounting frame is installed on the upper end face of the condenser, and the upper end face of the evaporator mounting frame is provided with an evaporator.

[0010] Furthermore, the screw compression structure includes a screw compressor, an exhaust pipe, and an intake pipe; the screw compressor is installed on the upper end surface of the mounting base, wherein the exhaust pipe and the intake pipe are respectively connected to the screw compressor, wherein the exhaust pipe is connected to the condenser, and the intake pipe is connected to the evaporator.

[0011] As a preferred technical solution, the end surface of the evaporator end cover is also connected to a high-pressure liquid circulation pipe, one end of the high-pressure liquid circulation pipe is connected to a drying filter, and the surface of the drying filter is connected to the condenser through a connecting pipe.

[0012] Furthermore, a mounting frame is installed on the surface of the evaporator, and a control box is installed on the upper end of the mounting frame.

[0013] Compared with the prior art, the present invention provides a screw-type water-cooling unit with the following beneficial effects:

[0014] 1. First of all, this screw chiller can also use a softening water treatment device to pre-treat the water, but in order to prevent a small amount of scale from adhering to the evaporator, when the cold water enters the evaporator through the chilled water inlet pipe, it contacts the first fan blade, causing the first fan blade to rotate, and drives the rotating shaft to rotate, and then drives the second fan blade to rotate. The first fan blade scrapes the inner wall of the evaporator, and the second fan blade scrapes the surface of the evaporator plate to prevent the problem of reduced heat transfer efficiency due to the adhesion of scale and impurities. This design can use the energy of the water flow itself to drive the fan blade to rotate, thereby realizing an automatic cleaning function, reducing the frequency and cost of manual cleaning, and reducing the deposition of scale can reduce corrosion and wear on the inner wall of the evaporator and the evaporator plate, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model;

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the three-dimensional structure;

[0017] Figure 3 For this utility model Figure 1 Rear view three-dimensional structure diagram;

[0018] Figure 4 For this utility model Figure 1 Schematic diagram of the left view structure;

[0019] Figure 5 For this utility model Figure 4 AA cross-sectional structural diagram;

[0020] Figure 6 This is a schematic diagram of the structure of the evaporator of the utility model;

[0021] Figure 7 For this utility model Figure 6 BB cross-sectional structure diagram;

[0022] Figure 8This is a schematic diagram of the plate structure of the evaporator of the utility model;

[0023] Figure 9 This is a schematic diagram of the structure of the condenser of the utility model;

[0024] Figure 10 This is a schematic diagram of the circulation pipeline structure of the utility model;

[0025] Figure 11 This is a schematic diagram of the internal structure of the condenser end cover on the right side of the condenser of the utility model;

[0026] Figure 12 This is a structural diagram of the support seat of the utility model.

[0027] In the figure: 1. Mounting base; 2. Condenser; 3. Evaporator mounting frame; 4. Evaporator; 5. Mounting base; 6. Screw compressor; 7. Mounting frame; 8. Control box; 9. Condenser end cover; 10. Evaporator end cover; 11. Chilled water inlet pipe; 12. Exhaust pipe; 13. Suction pipe; 14. High-pressure liquid circulation pipe; 15. Cooling water circulation pipe; 16. Dry filter; 17. Connecting pipe; 18. Rotating shaft; 19. First fan blade; 20. Second fan blade; 21. Evaporator plate; 22. Baffle; 23. Circulation pipe; 24. Support base; 25. Movable plate; 26. Spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example

[0030] See also Figure 1-12The utility model provides the following technical solutions: a screw-type water cooling unit, including a mounting frame, an evaporator structure, a condenser structure, and a screw compression structure. The evaporator structure, the condenser structure, and the screw compression structure are interconnected. The evaporator structure includes an evaporator 4, an evaporator end cover 10, a chilled water inlet pipe 11, a rotating shaft 18, a first fan blade 19, a second fan blade 20, and an evaporator plate 21; the evaporator 4 is installed on the condenser 2, and evaporator end covers 10 are provided at both ends of the evaporator 4. The chilled water inlet pipe 11 is symmetrically provided on the surface of the evaporator 4, wherein the interior of the evaporator 4 is horizontally rotated with a rotating shaft 18, and a rotating shaft 18 is provided on the surface of the rotating shaft 18. There is a first fan blade 19, which corresponds to the chilled water inlet pipe 11, and the inner wall of the evaporator 4 is also provided with multiple groups of evaporator plates 21, wherein the rotating shaft 18 passes through the evaporator plate 21 but is not connected to the evaporator plate 21, and a second fan blade 20 is also provided on the surface of the rotating shaft 18, and the second fan blade 20 is in contact with the side of the evaporator plate 21, and the first fan blade 19 and the second fan blade 20 are both in contact with the inner wall of the evaporator 4, and the first fan blade 19 and the second fan blade 20 are rotated by the entry of chilled water, and the swirl direction is to the right, wherein the upper end face of the evaporator 4 is installed with a mounting seat 5, and the upper end of the mounting seat 5 is installed with a screw compression structure.

[0031] In this embodiment, the specific working principle is as follows: when the chilled water enters the evaporator 4 through the chilled water inlet pipe 11, it contacts the first fan blade 19, thereby driving the rotating shaft 18 to rotate, and then driving the second fan blade 20 to rotate. Through the action of the first fan blade 19 and the second fan blade 20, the inner wall of the evaporator 4 and the surface of the evaporator plate 21 can be automatically and continuously cleaned to prevent scale from adhering to the inner wall of the evaporator 4 and the surface of the evaporator plate 21, and to prevent the problem of reduced heat transfer efficiency due to the adhesion of scale and impurities. This design can use the energy of the water flow itself to The fan blades are driven to rotate, thereby realizing the automatic cleaning function and reducing the frequency and cost of manual cleaning. Secondly, it should be noted that the present screw water cooling unit can install a softening water treatment device at the chilled water inlet pipe 11 to pre-treat the water. Secondly, when the first fan blade 19 and the second fan blade 20 rotate, the gas inside the evaporator 4 can be driven to flow to the right, which can facilitate the operation of the screw compression structure. Secondly, the rotation of the second fan blade 20 can also improve the heat transfer efficiency. Secondly, a softening water treatment device can also be set in this equipment before the chilled water enters the pipe 1 to filter the scale in the water.

[0032] In order to further improve the heat transfer efficiency and increase the contact surface, please refer to Figure 8As can be seen, the edges of the evaporator plates 21 are cut, and the cuts between two adjacent groups of evaporator plates 21 are symmetrical. Therefore, a portion of the gas in the evaporator 4 directly passes through another portion of the evaporator plates 21, forming an S-shaped flow. Cutting the edges can reduce the contact area between the plates, thereby reducing the thermal resistance in heat conduction and improving heat transfer efficiency. Cutting the edges can also ensure a more uniform flow of fluid between the plates, avoiding fluid accumulation or the formation of dead zones at the edges, further improving heat transfer efficiency. Cutting the edges can enhance the edge strength of the plates, preventing deformation or damage to the plates when the fluid pressure or temperature changes. This design can also improve the connection stability between the plates, ensuring the overall structural strength of the evaporator.

[0033] In order to prevent the screw water cooling unit from vibrating during operation, please refer to Figure 1 and Figure 12 It can be seen that the mounting frame includes a mounting base 1, a support seat 24, a movable plate 25, and a spring 26; a support seat 24 is provided at the lower end of the mounting base 1, and a movable plate 25 is movably provided in the support seat 24, wherein a spring 26 is provided on the end face of the support seat 24, and the upper end of the spring 26 is in contact with the lower end of the movable plate 25. A condenser structure is installed on the upper end face of the mounting base 1. When vibration occurs, the elastic force of the spring 26 will drive the movable plate 25 to move on the support seat 24, thereby effectively absorbing the vibration force.

[0034] The condenser structure is detailed in Figure 9 、 Figure 10 、 Figure 11 It can be seen that the condenser structure includes a condenser 2, a condenser end cover 9, a cooling water circulation pipe 15, a baffle 22, and a circulation pipe 23; the condenser 2 is installed at the upper end of the mounting base 1, and the condenser end covers 9 are installed at the two ends of the condenser 2, one group of condenser end covers 9 is provided with a cooling water circulation pipe 15 on the end face, and a baffle 22 is provided on the inner side of the condenser end cover 9, and the baffle 22 divides the interior of the condenser end cover 9 into two cavities, wherein the two groups of cooling water circulation pipes 15 correspond to the two cavities respectively, wherein a circulation pipe 23 is provided inside the condenser 2, wherein the interior of the other group of condenser end covers 9 is a cavity, and an evaporator mounting frame 3 is installed on the upper end face of the condenser 2, and an evaporator 4 is provided on the upper end face of the evaporator mounting frame 3.

[0035] The screw compression structure can be found in Figure 1 、 Figure 2 、 Figure 3It can be seen that the screw compression structure includes a screw compressor 6, an exhaust pipe 12, and an intake pipe 13; the screw compressor 6 is installed on the upper end surface of the mounting base 5, wherein the exhaust pipe 12 and the intake pipe 13 are respectively connected to the screw compressor 6, wherein the exhaust pipe 12 is connected to the condenser 2, and the intake pipe 13 is connected to the evaporator 4. The screw compressor can inhale low-pressure gas and realize gas compression and transportation through the rotational motion of the screw-shaped rotor in the cylinder and the sealed space formed by the spiral groove and the casing. This compression method enables the screw compressor to generate high-pressure gas to meet the different requirements for gas pressure in industrial production.

[0036] See Figure 1 It can be seen that a high-pressure liquid circulation pipe 14 is connected to the end surface of the evaporator end cover 10 , one end of the high-pressure liquid circulation pipe 14 is connected to a drying filter 16 , and the surface of the drying filter 16 is connected to the condenser 2 through a connecting pipe 17 .

[0037] See Figure 1 It can be seen that a mounting frame 7 is also installed on the surface of the evaporator 4 , and a control box 8 is installed on the upper end of the mounting frame 7 .

[0038] The working principle of the screw water cooling unit is as follows: first, the refrigerant absorbs heat from the water in the evaporator 4 and evaporates into gas. The gas is then absorbed by the screw compressor 6 through the intake pipe 13, and high-pressure gas is generated by the screw compressor 6. It passes through the exhaust pipe 12 to the condenser 2, wherein the high-temperature gas is cooled by the cooling water circulation pipe 15 in the condenser 2. At this time, the high-pressure gas is condensed into water by cooling to form a high-pressure liquid. The high-pressure liquid at this time flows to the drying filter 16 through the connecting pipe 17, and then flows into the evaporator 4 through the high-pressure liquid circulation pipe 14. An expansion valve is also provided on the high-pressure liquid circulation pipe 14 to achieve throttling and pressure reduction, so that the liquid entering the evaporator 4 becomes a low-pressure liquid. At this time, the chilled water entering through the chilled water inlet pipe 11 enters the evaporator 4, then absorbs heat and evaporates, and is absorbed by the screw compressor 6, thereby realizing reciprocating operation.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A screw-type water-cooling unit, comprising a mounting frame, an evaporator structure, a condenser structure, and a screw compression structure, wherein the evaporator structure, the condenser structure, and the screw compression structure are interconnected, and characterized in that: The evaporator structure comprises an evaporator (4), an evaporator end cover (10), a chilled water inlet pipe (11), a rotating shaft (18), a first fan blade (19), a second fan blade (20), and an evaporator plate (21); the evaporator (4) is mounted on a condenser (2), evaporator end covers (10) are provided at both ends of the evaporator (4), and a chilled water inlet pipe (11) is symmetrically provided on the surface of the evaporator (4), wherein a rotating shaft (18) is provided inside the evaporator (4) for horizontal rotation, and a first fan blade (19) is provided on the surface of the rotating shaft (18), wherein the first fan blade (19) corresponds to the chilled water inlet pipe (11), and the evaporator (4) is provided with a plurality of fan blades (19). The inner wall is also provided with a plurality of evaporator plates (21), wherein the rotating shaft (18) passes through the evaporator plates (21) but is not connected to the evaporator plates (21), and a second fan blade (20) is also provided on the surface of the rotating shaft (18), the second fan blade (20) is in contact with the side of the evaporator plate (21), and the first fan blade (19) and the second fan blade (20) are both in contact with the inner wall of the evaporator (4), and the first fan blade (19) and the second fan blade (20) are rotated by the entry of chilled water, and the swirl direction is rightward, wherein the upper end surface of the evaporator (4) is installed with a mounting seat (5), and the upper end of the mounting seat (5) is installed with a screw compression structure.

2. A screw-type water-cooling unit according to claim 1, characterized in that: The edges of the surfaces of the evaporator plates (21) are cut, and the cut portions of two adjacent groups of evaporator plates (21) are in a symmetrical relationship.

3. The screw-type water cooling unit according to claim 1, characterized in that: The mounting frame comprises a mounting base (1), a support seat (24), a movable plate (25), and a spring (26); the lower end of the mounting base (1) is provided with a support seat (24), and a movable plate (25) is movably provided in the support seat (24), wherein a spring (26) is provided on the end surface of the support seat (24), and the upper end of the spring (26) contacts the lower end of the movable plate (25); and a condenser structure is installed on the upper end surface of the mounting base (1).

4. The screw-type water cooling unit according to claim 1, characterized in that: The condenser structure comprises a condenser (2), a condenser end cover (9), a cooling water circulation pipe (15), a baffle (22), and a circulation pipe (23); the condenser (2) is mounted on the upper end of the mounting base (1), and the condenser end covers (9) are mounted on the two ends of the condenser (2), wherein one group of the condenser end covers (9) is provided with a cooling water circulation pipe (15) on the end face, and a baffle (22) is provided on the inner side face of the condenser end cover (9), and the baffle (22) divides the interior of the condenser end cover (9) into two cavities, wherein the two groups of cooling water circulation pipes (15) correspond to the two cavities respectively, wherein the interior of the condenser (2) is provided with a circulation pipe (23), wherein the interior of the other group of the condenser end covers (9) is a cavity, and an evaporator mounting frame (3) is mounted on the upper end face of the condenser (2), and an evaporator (4) is provided on the upper end face of the evaporator mounting frame (3).

5. The screw-type water cooling unit according to claim 1, characterized in that: The screw compression structure comprises a screw compressor (6), an exhaust pipe (12), and an intake pipe (13); the screw compressor (6) is mounted on the upper end surface of the mounting base (5), wherein the exhaust pipe (12) and the intake pipe (13) are respectively connected to the screw compressor (6), wherein the exhaust pipe (12) is communicated with the condenser (2), and the intake pipe (13) is connected to the evaporator (4).

6. The screw-type water cooling unit according to claim 1, characterized in that: The end surface of the evaporator end cover (10) is also connected to a high-pressure liquid circulation pipe (14), one end of the high-pressure liquid circulation pipe (14) is connected to a drying filter (16), and the surface of the drying filter (16) is connected to the condenser (2) through a connecting pipe (17).

7. The screw-type water cooling unit according to claim 1, characterized in that: A mounting frame (7) is also installed on the surface of the evaporator (4), and a control box (8) is installed on the upper end of the mounting frame (7).

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