Vertical cabinet chiller unit

Abstract

This utility model discloses a cabinet-type chiller unit, relating to the field of refrigeration cycle technology. It includes a cabinet with an inlet pipe inside, a filter assembly at one end of the inlet pipe, an evaporator assembly inside the cabinet, a compressor inside the cabinet, a condenser at the bottom of the compressor, a refrigerant outlet pipe on the outer wall of the condenser, and an outlet pipe on the outer wall of the evaporator assembly. To address the problems in existing cabinet-type chiller units where impurities easily accumulate in the inlet liquid, the filter screen easily becomes clogged, and replacement is time-consuming, leading to scale buildup in the evaporator heat exchange chamber and reduced heat exchange efficiency, this application uses a motor-driven lead screw to drive a scraper to reciprocate and scrape the filter screen surface. Through a fixed internal groove, a protrusion engaging structure, and a screen removal groove design, the filter screen can be quickly removed and installed simply by moving the scraper, significantly reducing scale formation inside the evaporator.

Description

Technical Field

[0001] This utility model relates to the technical field of cabinet-type water chillers, specifically cabinet-type water chillers. Background Technology

[0002] The floor-standing chiller is a high-efficiency and compact refrigeration unit designed for small and medium-sized commercial and industrial applications. It uses a scroll or screw compressor, paired with a shell-and-tube evaporator and condenser, and uses water as the circulating medium to achieve stable cooling. The unit integrates a circulating water pump and an intelligent control system, supports air-cooled or water-cooled heat dissipation modes, and can be flexibly adapted to office buildings, laboratories, production lines, and other locations. Its advantages lie in its compact structure, which can be placed and used directly without a dedicated machine room. It also has multi-level energy regulation and remote monitoring functions to ensure efficient operation while reducing energy consumption.

[0003] However, in existing technologies, when the cooling liquid is introduced into the evaporator through the inlet pipe, impurities in the cooling liquid will form a scale layer inside the evaporator. The scale will affect the heat exchange effect of the liquid that needs to exchange heat in the heat exchanger, hinder the heat transfer between the liquid to be cooled and the refrigerant. The thickening of the scale layer will reduce the cross-sectional area of ​​the flow channel, resulting in increased fluid resistance and decreased flow velocity, further weakening the heat exchange effect. Under long-term operation, the scale will also corrode the inner wall of the evaporator, shorten the equipment life, and affect the stable operation of the chiller unit. Therefore, we need a cabinet-type chiller unit. Utility Model Content

[0004] The purpose of this utility model is to provide a cabinet-type chiller unit to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cabinet-type chiller unit, including a cabinet, an inlet pipe inside the cabinet, a filter assembly at one end of the inlet pipe, an evaporator assembly inside the cabinet, a compressor inside the cabinet, a condenser at the bottom of the compressor, a refrigerant outlet pipe on the outer wall of the condenser, an outlet pipe on the outer wall of the evaporator assembly, a refrigerant inlet pipe on the outer wall of the condenser, a filter on the outer wall of the refrigerant inlet pipe, an expansion valve on the outer wall of the refrigerant inlet pipe, and the filter assembly including support legs. The support legs are located inside the cabinet. A fixed box is fixedly connected to the top of the support legs. A positioning block is fixedly connected to one side of the fixed box. A motor is fixedly connected to the top of the positioning block. A lead screw is fixedly connected to the output shaft of the motor via a coupling. A sliding rod is fixedly connected inside the fixed box. A scraper is threaded onto the outer wall of the lead screw. A fixed frame is fixedly connected inside the fixed box. A mesh-collecting groove is opened at the top of the fixed frame. A groove is opened on the inner wall of the fixed frame. A protrusion is movably connected to the inner wall of the groove. A filter screen is fixedly connected to the top of the protrusion. A filter tube is fixedly connected to one side of the fixed box.

[0006] Preferably, the motor forms a threaded structure with the scraper via a lead screw, and the outer diameter of the lead screw matches the inner diameter of the scraper, and the outer wall of the lead screw is fitted to the inner wall of the scraper.

[0007] Preferably, the scraper is connected to the fixed box via a sliding rod to form a sliding structure, and the outer diameter of the sliding rod matches the inner diameter of the scraper, and the outer wall of the sliding rod is fitted to the inner wall of the scraper.

[0008] Preferably, the protrusion is engaged with the fixing structure through the groove, and the outer diameter of the protrusion matches the inner diameter of the groove, and the outer wall of the protrusion is fitted to the inner wall of the groove.

[0009] Preferably, the evaporator assembly includes a support leg, the bottom of which is fixedly connected to the inside of the cabinet, the top of which is fixedly connected to the evaporator body, the evaporator body has a cavity in the middle, a heat exchange chamber is formed inside the evaporator body, an inlet pipe is fixedly connected to the outer wall of the evaporator body, an outlet pipe is fixedly connected to the outer wall of the evaporator body, and a spiral tube is provided inside the heat exchange chamber.

[0010] Preferably, the inlet pipe is connected to the outlet pipe via a spiral tube, and there are two spiral tubes. One end of each spiral tube is connected to the outlet pipe on the outer wall of the evaporator body, and the other end of each spiral tube is connected to the inlet pipe at the upper end of the evaporator body.

[0011] Preferably, the evaporator body is fixed to the condenser via a refrigerant outlet pipe, and the outer wall of the evaporator body is fixedly connected to one end of the refrigerant outlet pipe, while the end of the refrigerant outlet pipe away from the evaporator body is fixedly connected to the outer wall of the condenser.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In the scheme of this application: 1. To address the problems of easy deposition of impurities in the inlet liquid and easy clogging of the filter screen in existing cabinet-type water chiller units, which leads to the accumulation of dirt in the heat exchange chamber of the evaporator and a decrease in heat exchange efficiency, this application sets up a motor-driven lead screw to drive a scraper to reciprocate to scrape the surface of the filter screen. Through the design of the groove in the fixed box, the protrusion locking structure and the screen picking groove, the filter screen can be quickly removed and installed by simply moving the scraper without disassembling the box. This design significantly reduces the formation of dirt in the evaporator, achieves dynamic filtration in the liquid flow, effectively prevents impurities from depositing and clogging the mesh, and ensures heat exchange efficiency. 2. To address the issues of low heat exchange efficiency and slow cooling speed caused by insufficient convection between the refrigerant and the liquid to be cooled in existing cabinet-type chiller units, this application employs a spiral tube structure. This structure allows the liquid to be cooled to flow from top to bottom along the spiral tube, while the refrigerant flows in the opposite direction from bottom to top after entering the heat exchange chamber through the refrigerant inlet pipe. This creates a bidirectional convection heat exchange mode, significantly improving heat exchange efficiency. Combined with the rapid flow guidance design of the filter tube and the liquid inlet pipe, the liquid flow resistance is reduced. Finally, the cooled liquid flows out quickly through the liquid outlet pipe. This design effectively shortens the cooling time and forms a highly efficient cycle. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the filter and expansion valve structure of this utility model; Figure 3 This is a schematic diagram of the filter assembly structure of this utility model; Figure 4 This is a schematic diagram of the mesh-collecting groove and filter screen structure of this utility model; Figure 5 This is a schematic diagram of the evaporator assembly structure of this utility model.

[0014] In the diagram: 1. Cabinet; 2. Water inlet pipe; 3. Filter assembly; 301. Support leg; 302. Fixing box; 303. Positioning block; 304. Motor; 305. Lead screw; 306. Slide rod; 307. Scraper; 308. Fixing frame; 309. Screen collection groove; 310. Groove; 311. Protrusion; 312. Filter screen; 313. Filter tube; 4. Evaporator assembly; 401. Support leg; 402. Evaporator body; 403. Cavity; 404. Liquid inlet pipe; 405. Liquid outlet pipe; 406. Heat exchange chamber; 407. Spiral tube; 5. Compressor; 6. Condenser; 7. Refrigerant outlet pipe; 8. Water outlet pipe; 9. Refrigerant inlet pipe; 10. Filter; 11. Expansion valve. Detailed Implementation

[0015] 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.

[0016] This utility model embodiment provides a vertical cabinet-type water chiller unit, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the system includes a cabinet 1, an inlet pipe 2 inside the cabinet 1, a filter assembly 3 at one end of the inlet pipe 2, an evaporator assembly 4 inside the cabinet 1, a compressor 5 inside the cabinet 1, a condenser 6 at the bottom of the compressor 5, a refrigerant outlet pipe 7 on the outer wall of the condenser 6, an outlet pipe 8 on the outer wall of the evaporator assembly 4, a refrigerant inlet pipe 9 on the outer wall of the condenser 6, a filter 10 on the outer wall of the refrigerant inlet pipe 9, and an expansion valve 11 on the outer wall of the refrigerant inlet pipe 9. The filter assembly 3 includes a support leg 301, which is located inside the cabinet 1. A fixing box 302 is fixedly connected to the top of the support leg 301. A positioning block 303 is fixedly connected to one side of the fixed box 302. A motor 304 is fixedly connected to the top of the positioning block 303. The output shaft of the motor 304 is fixedly connected to a lead screw 305 via a coupling. A slide rod 306 is fixedly connected inside the fixed box 302. A scraper 307 is threaded onto the outer wall of the lead screw 305. A fixed frame 308 is fixedly connected inside the fixed box 302. A screen-collecting groove 309 is provided on the top of the fixed frame 308. A groove 310 is provided on the inner wall of the fixed frame 308. A protrusion 311 is movably connected to the inner wall of the groove 310. A filter screen 312 is fixedly connected to the top of the protrusion 311. A filter tube 313 is fixedly connected to one side of the fixed box 302. The inlet pipe 2 allows liquid to enter the fixed box 302. Starting the motor 304 rotates the lead screw 305, which in turn moves the scraper 307 linearly via the slide rod 306. This causes the liquid to move across the filter screen 312, filtering impurities. The filtered liquid then flows through the filter pipe 313 to the inlet pipe 404, increasing the filtration speed. Simultaneously, starting the compressor 5 compresses the refrigerant, changing it from a low-temperature, low-pressure gas to a high-temperature, high-pressure gas. This high-temperature, high-pressure refrigerant gas then enters the condenser 6, where it exchanges heat with the cooling water. The heat is released and condensed into a high-pressure liquid. After the high-pressure liquid refrigerant is filtered by the filter 10, it can be throttled and depressurized by the expansion valve 11, becoming a low-temperature, low-pressure wet vapor. When the filter screen 312 needs to be replaced, the cover on the top of the fixed box 302 is opened, which allows the starting motor 304 to drive the lead screw 305 to move the scraper 307 to one side. The motor 304 can be turned off, and the filter screen 312 can be taken out by inserting a finger into the screen removal groove 309. The protrusion 311 at the bottom of the new filter screen 312 can be aligned with the groove 310 on the inner wall of the fixed frame 308, which makes it easy to replace the filter screen 312.

[0017] Further as Figure 3As shown, the motor 304 forms a threaded structure with the scraper 307 via the lead screw 305, and the outer diameter of the lead screw 305 matches the inner diameter of the scraper 307. The outer wall of the lead screw 305 is fitted to the inner wall of the scraper 307. The motor 304 drives the lead screw 305 to rotate, which in turn causes the scraper 307 to move along the lead screw 305.

[0018] Further as Figure 3 As shown, the scraper 307 forms a sliding structure with the fixed box 302 through the slide rod 306, and the outer diameter of the slide rod 306 matches the inner diameter of the scraper 307. The outer wall of the slide rod 306 is fitted to the inner wall of the scraper 307. Through the scraper 307, when the scraper 307 moves, it can move linearly by relying on the slide rod 306 in the fixed box 302.

[0019] Further as Figure 4 As shown, the protrusion 311 forms a locking structure with the fixing frame 308 through the groove 310, and the outer diameter of the protrusion 311 matches the inner diameter of the groove 310. The outer wall of the protrusion 311 fits against the inner wall of the groove 310. Through the protrusion 311, the protrusion 311 can be aligned and overlapped with the groove 310 on the inner wall of the fixing frame 308, which makes it easy to replace the filter screen 312.

[0020] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the evaporator assembly 4 includes a support leg 401, the bottom of which is fixedly connected to the inside of the cabinet 1. The top of the support leg 401 is fixedly connected to the evaporator body 402. A cavity 403 is formed in the middle of the evaporator body 402. A heat exchange chamber 406 is formed inside the evaporator body 402. An inlet pipe 404 and an outlet pipe 405 are fixedly connected to the outer wall of the evaporator body 402. A spiral tube 407 is provided inside the heat exchange chamber 406. When the liquid that needs heat exchange enters the spiral tube 407 through the inlet pipe 404 and moves from top to bottom along the spiral tube 407, the compressor 5 is started at the same time. This causes the refrigerant in the compressor 5 to be compressed from a low-temperature, low-pressure gas to a high-temperature, high-pressure gas, allowing the high-temperature, high-pressure refrigerant gas to enter the condenser 6 and react with the cooling water. Heat exchange is performed to release heat and condense into high-pressure liquid. After being filtered by filter 10, the high-pressure liquid refrigerant is throttled and depressurized by expansion valve 11, becoming low-temperature, low-pressure wet vapor. This low-temperature, low-pressure wet vapor enters the spiral tube 407 in the heat exchange chamber 406 through refrigerant inlet pipe 9. The liquid moves from bottom to top in the spiral tube 407, creating convection between the liquid and refrigerant, thus improving the heat exchange effect. After heat exchange, the liquid flows through spiral tube 407 to outlet pipe 405, allowing the refrigerant to flow out of the heat exchange chamber 406 through refrigerant outlet pipe 7. This allows the low-temperature refrigerant in the evaporator body 402 to absorb heat from the liquid to be cooled, thus cooling it down. At the same time, the refrigerant evaporates into gas and returns to compressor 5 to complete the cycle. The cooled liquid flows through outlet pipe 405 to water outlet pipe 8.

[0021] Further as Figure 5 As shown, the liquid inlet pipe 404 is connected to the liquid outlet pipe 405 via a spiral tube 407. There are two spiral tubes 407, one end of which is connected to the liquid outlet pipe 405 on the outer wall of the evaporator body 402, and the other end of which is connected to the liquid inlet pipe 404 at the upper end of the evaporator body 402. Through the liquid inlet pipe 404, the liquid that needs to be heated can flow through the liquid inlet pipe 404 to the spiral tube 407, and the liquid in the spiral tube 407 can flow to the liquid outlet pipe 405.

[0022] Further as Figure 1 and Figure 5 As shown, the evaporator body 402 is fixed to the condenser 6 via the refrigerant outlet pipe 7, and the outer wall of the evaporator body 402 is fixedly connected to one end of the refrigerant outlet pipe 7, and the end of the refrigerant outlet pipe 7 away from the evaporator body 402 is fixedly connected to the outer wall of the condenser 6. Through the condenser 6, the refrigerant of the condenser 6 can flow to the evaporator body 402 through the refrigerant outlet pipe 7.

[0023] Working principle: Liquid enters the fixed box 302 through the inlet pipe 2. Starting the motor 304 drives the lead screw 305 to rotate, which in turn drives the scraper 307 to move linearly via the slide rod 306. This causes the liquid to move across the filter screen 312, filtering impurities and clearing blockages. The filtered liquid then flows through the filter pipe 313 to the inlet pipe 404. When heat exchange is required... When the liquid enters the spiral tube 407 through the inlet pipe 404, it moves from top to bottom along the spiral tube 407. Simultaneously, the compressor 5 is started, compressing the refrigerant in the compressor 5, changing it from a low-temperature, low-pressure gas to a high-temperature, high-pressure gas. This high-temperature, high-pressure refrigerant gas then enters the condenser 6, where it exchanges heat with the cooling water, releasing heat and condensing into a high-pressure liquid. After being filtered by the filter 10, the high-pressure liquid refrigerant is throttled and depressurized by the expansion valve 11, becoming a low-temperature, low-pressure wet vapor. This allows low-temperature, low-pressure wet steam to enter the spiral tube 407 within the heat exchange chamber 406 through the refrigerant inlet pipe 9. The steam moves upwards within the spiral tube 407, creating convection between the liquid and refrigerant, thus improving heat exchange efficiency. After heat exchange, the liquid flows through the spiral tube 407 to the outlet pipe 405, allowing the refrigerant to exit the heat exchange chamber 406 through the refrigerant outlet pipe 7. This allows the low-temperature refrigerant within the evaporator body 402 to absorb heat from the liquid being cooled, thus lowering its temperature. Simultaneously, the refrigerant evaporates into a gaseous state and returns to the pressure... After the compressor 5 completes the cycle, the cooled liquid flows to the outlet pipe 8 through the outlet pipe 405. When the filter screen 312 needs to be replaced, by opening the cover on the top of the fixed box 302, the start motor 304 can drive the lead screw 305 to move the scraper 307 to one side. The motor 304 can be turned off, and the filter screen 312 can be taken out by inserting a finger into the screen removal groove 309. The protrusion 311 at the bottom of the new filter screen 312 can be aligned with the groove 310 on the inner wall of the fixed frame 308, which makes it easy to replace the filter screen 312.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A floor standing water chiller comprising a cabinet (1), characterized in that: The cabinet (1) is equipped with a water inlet pipe (2) inside, and a filter assembly (3) is installed at one end of the water inlet pipe (2). The cabinet (1) is also equipped with an evaporator assembly (4) inside, and a compressor (5) inside. A condenser (6) is installed at the bottom of the compressor (5). A refrigerant outlet pipe (7) is installed on the outer wall of the condenser (6). A water outlet pipe (8) is installed on the outer wall of the evaporator assembly (4). A refrigerant inlet pipe (9) is installed on the outer wall of the condenser (6). A filter (10) is installed on the outer wall of the refrigerant inlet pipe (9). An expansion valve (11) is installed on the outer wall of the refrigerant inlet pipe (9). The filter assembly (3) includes a support leg (301), which is located inside the cabinet (1). A fixed box (302) is fixedly connected to the top of the support leg (301). A positioning block (303) is fixedly connected to one side of the fixed box (302). A motor (304) is fixedly connected to the top of the positioning block (303). The output shaft of the motor (304) is fixedly connected to a lead screw (305) via a coupling. A slide rod (306) is fixedly connected inside the fixed box (302). A scraper (307) is threaded onto the outer wall of the lead screw (305). A fixed frame (308) is fixedly connected inside the fixed box (302). A mesh-collecting groove (309) is provided on the top of the fixed frame (308). A groove (310) is provided on the inner wall of the fixed frame (308). A protrusion (311) is movably connected to the inner wall of the groove (310). A filter screen (312) is fixedly connected to the top of the protrusion (311). A filter tube (313) is fixedly connected to one side of the fixed box (302).

2. The upright type chiller according to claim 1, wherein: The motor (304) forms a threaded structure with the scraper (307) through the lead screw (305), and the outer diameter of the lead screw (305) matches the inner diameter of the scraper (307), and the outer wall of the lead screw (305) is fitted to the inner wall of the scraper (307).

3. The vertical cabinet-type chiller unit according to claim 1, characterized in that: The scraper (307) forms a sliding structure with the fixed box (302) through the slide rod (306), and the outer diameter of the slide rod (306) matches the inner diameter of the scraper (307), and the outer wall of the slide rod (306) is fitted to the inner wall of the scraper (307).

4. The vertical cabinet-type chiller unit according to claim 1, characterized in that: The protrusion (311) forms a locking structure with the fixing frame (308) through the groove (310), and the outer diameter of the protrusion (311) matches the inner diameter of the groove (310), and the outer wall of the protrusion (311) is fitted to the inner wall of the groove (310).

5. The vertical cabinet-type chiller unit according to claim 1, characterized in that: The evaporator assembly (4) includes a support leg (401), and the bottom of the support leg (401) is fixedly connected to the inside of the cabinet (1). The top of the support leg (401) is fixedly connected to the evaporator body (402). A cavity (403) is opened in the middle of the evaporator body (402). A heat exchange chamber (406) is opened inside the evaporator body (402). An inlet pipe (404) is fixedly connected to the outer wall of the evaporator body (402). An outlet pipe (405) is fixedly connected to the outer wall of the evaporator body (402). A spiral tube (407) is provided inside the heat exchange chamber (406).

6. The vertical cabinet-type chiller unit according to claim 5, characterized in that: The inlet pipe (404) is connected to the outlet pipe (405) via a spiral tube (407), and there are two spiral tubes (407). One end of the two spiral tubes (407) is connected to the outlet pipe (405) on the outer wall of the evaporator body (402), and the other end of the two spiral tubes (407) is connected to the inlet pipe (404) at the upper end of the evaporator body (402).

7. The vertical cabinet-type chiller unit according to claim 5, characterized in that: The evaporator body (402) forms a fixed structure with the condenser (6) through the refrigerant outlet pipe (7), and the outer wall of the evaporator body (402) is fixedly connected to one end of the refrigerant outlet pipe (7), and the end of the refrigerant outlet pipe (7) away from the evaporator body (402) is fixedly connected to the outer wall of the condenser (6).

Images