Anti-scale variable-frequency centrifugal water chilling unit

Abstract

The utility model relates to the technical field of variable-frequency centrifugal water chilling units, and discloses an anti-incrustation variable-frequency centrifugal water chilling unit which comprises a supporting frame, an evaporator, a centrifugal compressor and a condenser, and a second water inlet is formed in the position, close to the top end, of the front end of the condenser. The bottom ends of the first water inlet and the second water inlet are each provided with a slag discharging opening. The second water inlet is formed in the end face of the condenser and used for water inflow, the annular plate and the mounting plate are connected and mounted through the bolts, the filter screen is used for filtering treatment, then the transmission shaft can be driven to rotate after the driving motor works, and at the moment, the cleaning rod rotates correspondingly, and meanwhile the cleaning effect is improved. The cleaning brush can clean residues on the surface of the filter screen, at the moment, the residue discharging opening can be used for residue discharging treatment, and therefore in the working process, the overall inflow water filtering work is well improved, the proportion of impurities in water flow is reduced, and scale formation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of variable frequency centrifugal chillers, in particular to a scale-proof variable frequency centrifugal chiller. Background Art

[0002] The centrifugal chiller is a highly efficient cooling system that uses the principle of centrifugal force to remove heat from the inside of the fluid. The centrifugal chiller is divided into fully enclosed, semi-enclosed, and open types. The centrifugal refrigeration compressor is one of the most important components of the unit. It generates centrifugal force through the high-speed rotating impeller to compress the low-pressure gas into high-pressure gas, thereby achieving a cooling effect.

[0003] Based on the working mode of centrifugal chillers, it has become a cooling component in larger occasions. Among them, variable frequency centrifugal chillers are a type of centrifugal chillers, but they use variable frequency to change their energy consumption. When the variable frequency centrifugal chillers are in use, water vapor is constantly circulating, and impurities mixed in the water during the introduction can easily cause dirt to be adsorbed in the pipes, which can directly affect the service life of the variable frequency centrifugal chillers. Utility Model Content

[0004] The purpose of the utility model is to provide a scale-proof variable frequency centrifugal chiller to solve the problem in the above-mentioned background technology that when the variable frequency centrifugal chiller is in use, water vapor is constantly circulated, and impurities mixed in the water are easily mixed to produce dirt adsorbed in the pipeline, which can directly affect the service life of the variable frequency centrifugal chiller.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a variable frequency centrifugal chiller with anti-scaling, comprising a support frame, an evaporator, a centrifugal compressor, and a condenser, wherein a second water inlet is installed at a position near the top of the front end of the condenser, a second water outlet is installed at a position near the bottom of the front end of the condenser, a first water inlet is installed at a position near the top of the front end of the evaporator, and a first water outlet is installed at a position near the bottom of the front end of the evaporator, and mounting plates are installed at the top and bottom of the inner walls of the first water inlet and the second water inlet, an annular plate is installed at the front end of the mounting plate, a hollow plate is provided at the middle position of the annular plate, a connecting rod is fixed between the hollow plate and the annular plate, a filter is installed inside the annular plate, a driving motor is installed inside the hollow plate, a transmission shaft is connected to the output end of the driving motor, a cleaning rod is connected to the outer wall of the transmission shaft, a cleaning brush is installed at the back end of the cleaning rod, and a slag discharge port is installed at the bottom ends of the first water inlet and the second water inlet.

[0006] Preferably, the connecting rods are symmetrically distributed about the central axis of the annular plate, and the filter screens are symmetrically distributed about the central axis of the annular plate.

[0007] Preferably, the mounting plates are symmetrically distributed about the central axis of the first water inlet, and the cleaning rods are distributed in three groups in a ring shape about the center of the transmission shaft.

[0008] Preferably, the cleaning brushes are evenly distributed on the back end of the cleaning rod, and the annular plate and the mounting plate are connected by bolts.

[0009] Preferably, the second water inlet is interconnected with the interior of the condenser, and the second water outlet is interconnected with the interior of the condenser.

[0010] Preferably, the first water outlet is interconnected with the interior of the evaporator, the first water inlet is interconnected with the interior of the evaporator, a second guide pipe is connected to one side of the centrifugal compressor, a first guide pipe is connected to the other side of the centrifugal compressor, and a throttling tube is connected to the bottom ends of the condenser and the evaporator.

[0011] Preferably, the inner walls of the evaporator and the condenser are coated with an anti-corrosion layer, and the outer side walls of the anti-corrosion layer are fixed with an acid-resistant layer.

[0012] Preferably, connecting plates are installed at the bottom ends of the evaporator and the condenser, clamping rods are installed between the connecting plates, a clamping block is installed at one end of the clamping rod, and a mounting plate is connected to the bottom end of the clamping block.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the anti-scaling variable frequency centrifugal chiller not only improves the water inlet filtration capacity, but also improves the inner wall protection capacity and pipeline limiting capacity of the variable frequency centrifugal chiller;

[0014] (1) The second water inlet is installed at the end surface of the condenser for water inlet, the first water inlet is installed at the end surface of the evaporator for water inlet, and then the mounting plate is installed on the inner wall of the first water inlet and the second water inlet, and the connection and installation between the annular plate and the mounting plate are completed by bolts, and the filter is used for filtering. Then, after the driving motor is working, the transmission shaft can be driven to rotate. At this time, the cleaning rod rotates accordingly, and the cleaning brush can clean the residue on the surface of the filter. At this time, the slag discharge port can be used for slag discharge. Therefore, the overall water inlet filtration work is better improved during the working process, the proportion of impurities in the water flow is reduced, and the formation of scale is reduced;

[0015] (2) After a period of use, the scale of the evaporator or condenser and the whole is treated by using drugs or introducing carbon dioxide as needed, and the inner wall of the evaporator and condenser is coated with an anti-corrosion layer and an acid-resistant layer. Therefore, the anti-corrosion layer and the acid-resistant layer cooperate with each other to better complete a certain inner wall protection capability, thereby improving the overall inner wall protection capability;

[0016] (3) By installing the connecting plate at the bottom end of the evaporator and the condenser, the connection and installation between the connecting plate and the clamping rod are completed by using the pin shaft. After adjusting the position of the clamping rod, the outside of the throttling tube is limitedly clamped by the clamping block, and the connection between the two clamping blocks is completed by using the mounting plate, thereby improving the overall pipeline limiting capacity during the working process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the acid-resistant layer of the utility model;

[0019] Figure 3 It is a schematic diagram of a partial side cross-sectional structure of the first water inlet of the utility model;

[0020] Figure 4 It is a schematic diagram of the side structure of the clamping rod of the utility model.

[0021] In the figure: 1. support frame; 2. throttling tube; 3. clamping rod; 4. evaporator; 5. first water outlet; 6. first water inlet; 7. first guide tube; 8. centrifugal compressor; 9. second guide tube; 10. condenser; 11. second water inlet; 12. second water outlet; 13. anti-corrosion layer; 14. acid-resistant layer; 15. annular plate; 16. mounting plate; 17. filter screen; 18. hollow plate; 19. driving motor; 20. cleaning rod; 21. slag discharge port; 22. transmission shaft; 23. cleaning brush; 24. connecting plate; 25. clamping block. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4The utility model provides an embodiment: a variable frequency centrifugal chiller with anti-scaling, including a support frame 1, an evaporator 4, a centrifugal compressor 8, and a condenser 10. A second water inlet 11 is installed at a position near the top of the front end of the condenser 10, and a second water outlet 12 is installed at a position near the bottom of the front end of the condenser 10. A first water inlet 6 is installed at a position near the top of the front end of the evaporator 4, and a first water outlet 5 is installed at a position near the bottom of the front end of the evaporator 4. The top and bottom of the inner wall of the first water inlet 6 and the second water inlet 11 are A mounting plate 16 is installed, a ring plate 15 is installed at the front end of the mounting plate 16, a hollow plate 18 is provided at the middle position of the ring plate 15, a connecting rod is fixed between the hollow plate 18 and the ring plate 15, a filter screen 17 is installed inside the ring plate 15, a drive motor 19 is installed inside the hollow plate 18, a transmission shaft 22 is connected to the output end of the drive motor 19, a cleaning rod 20 is connected to the outer side wall of the transmission shaft 22, a cleaning brush 23 is installed at the back end of the cleaning rod 20, and a slag discharge port 21 is installed at the bottom end of the first water inlet 6 and the second water inlet 11.

[0024] The connecting rods are symmetrically distributed with respect to the central axis of the annular plate 15 , and the filter screens 17 are symmetrically distributed with respect to the central axis of the annular plate 15 .

[0025] The mounting plates 16 are symmetrically distributed about the central axis of the first water inlet 6 , and the cleaning rods 20 are distributed in three groups in a ring shape about the center of the transmission shaft 22 .

[0026] The cleaning brushes 23 are evenly distributed on the back end of the cleaning rod 20, and the annular plate 15 and the mounting plate 16 are connected by bolts.

[0027] The second water inlet 11 is communicated with the interior of the condenser 10 , and the second water outlet 12 is communicated with the interior of the condenser 10 .

[0028] The first water outlet 5 is interconnected with the interior of the evaporator 4, the first water inlet 6 is interconnected with the interior of the evaporator 4, a second guide pipe 9 is connected to one side of the centrifugal compressor 8, the other side of the centrifugal compressor 8 is connected to the first guide pipe 7, and the condenser 10 and the bottom end of the evaporator 4 are connected to the throttling tube 2.

[0029] The inner walls of the evaporator 4 and the condenser 10 are coated with an anti-corrosion layer 13 , and the outer side walls of the anti-corrosion layer 13 are fixed with an acid-resistant layer 14 .

[0030] The bottom ends of the evaporator 4 and the condenser 10 are provided with connecting plates 24, a clamping rod 3 is provided between the connecting plates 24, a clamping block 25 is provided at one end of the clamping rod 3, and a mounting plate is connected to the bottom end of the clamping block 25;

[0031] Further scale cleaning methods generally use drugs or the introduction of carbon dioxide, which easily forms an acidic environment. Therefore, the combination of the anti-corrosion layer 13 and the acid-resistant layer 14 is to prevent acid corrosion.

[0032] Working principle: First, during operation, the connecting plate 24 is installed at the bottom position of the evaporator 4 and the condenser 10, and the connection and installation between the connecting plate 24 and the clamping rod 3 are completed by using the pin shaft. After adjusting the position of the clamping rod 3, the outside of the throttling tube 2 is limitedly clamped by the clamping block 25, and the connection between the two clamping blocks 25 is completed by using the mounting plate to ensure the stability of the bottom throttling tube 2. Then, the centrifugal compressor 8 is used to form centrifugal force, and the flow position passes from the evaporator 4 through the first guide tube 7 to the position of the centrifugal compressor 8, and passes through the second guide tube 9 to the condenser 10, compressing the low-pressure gas into high-pressure gas, thereby achieving a cooling effect. After the inner walls of the evaporator 4 and the condenser 10 are coated with the anti-corrosion layer 13 and the acid-resistant layer 14, the anti-corrosion layer 13 and the acid-resistant layer 14 are used to form inner wall protection.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A variable frequency centrifugal chiller unit with anti-scaling function, comprising a support frame (1), an evaporator (4), a centrifugal compressor (8), and a condenser (10), characterized in that: A second water inlet (11) is installed at a position near the top end of the front end of the condenser (10), a second water outlet (12) is installed at a position near the bottom end of the front end of the condenser (10), a first water inlet (6) is installed at a position near the top end of the front end of the evaporator (4), a first water outlet (5) is installed at a position near the bottom end of the front end of the evaporator (4), the top and bottom ends of the inner walls of the first water inlet (6) and the second water inlet (11) are both installed with mounting plates (16), the front end of the mounting plate (16) is installed with an annular plate (15), and the annular plate (15) ) is provided at the middle position of the hollow plate (18), a connecting rod is fixed between the hollow plate (18) and the annular plate (15), a filter screen (17) is installed inside the annular plate (15), a driving motor (19) is installed inside the hollow plate (18), the output end of the driving motor (19) is connected to a transmission shaft (22), the outer side wall of the transmission shaft (22) is connected to a cleaning rod (20), a cleaning brush (23) is installed at the back end of the cleaning rod (20), and a slag discharge port (21) is installed at the bottom ends of the first water inlet (6) and the second water inlet (11).

2. The anti-scaling variable frequency centrifugal chiller according to claim 1, characterized in that: The connecting rods are symmetrically distributed about the central axis of the annular plate (15), and the filter screens (17) are symmetrically distributed about the central axis of the annular plate (15).

3. The anti-scaling variable frequency centrifugal chiller according to claim 1, characterized in that: The mounting plates (16) are symmetrically distributed about the central axis of the first water inlet (6), and the cleaning rods (20) are distributed in three groups in an annular shape about the center of the transmission shaft (22).

4. The anti-scaling variable frequency centrifugal chiller according to claim 1, characterized in that: The cleaning brushes (23) are evenly distributed on the back end of the cleaning rod (20), and the annular plate (15) and the mounting plate (16) are connected by bolts.

5. The anti-scaling variable frequency centrifugal chiller according to claim 1, characterized in that: The second water inlet (11) is in communication with the interior of the condenser (10), and the second water outlet (12) is in communication with the interior of the condenser (10).

6. The anti-scaling variable frequency centrifugal chiller according to claim 1, characterized in that: The first water outlet (5) is interconnected with the interior of the evaporator (4), the first water inlet (6) is interconnected with the interior of the evaporator (4), one side of the centrifugal compressor (8) is connected to the second flow guide pipe (9), the other side of the centrifugal compressor (8) is connected to the first flow guide pipe (7), and the bottom ends of the condenser (10) and the evaporator (4) are connected to a throttling tube (2).

7. The anti-scaling variable frequency centrifugal chiller according to claim 1, characterized in that: The inner walls of the evaporator (4) and the condenser (10) are coated with an anti-corrosion layer (13), and the outer wall of the anti-corrosion layer (13) is fixed with an acid-resistant layer (14).

8. The anti-scaling variable frequency centrifugal chiller according to claim 1, characterized in that: The bottom ends of the evaporator (4) and the condenser (10) are installed with connecting plates (24), a clamping rod (3) is installed between the connecting plates (24), a clamping block (25) is installed at one end of the clamping rod (3), and the bottom end of the clamping block (25) is connected to a mounting plate.

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