A cryocooler powered by low temperature hot water

Abstract

The application discloses a refrigerating machine based on low-temperature hot water as power, and relates to the technical field of refrigerating machines.The refrigerating machine comprises a refrigerating machine body, a generator is arranged on the front side of the refrigerating machine body, water inlet pipes and water outlet pipes are fixed on the two sides of the generator, a plurality of wave-shaped pipes are uniformly and equidistantly fixed between the water inlet pipes and the water outlet pipes, an auxiliary device is arranged in the generator, and the auxiliary device comprises a driving assembly arranged on the top of the generator and horizontal rods fixed on the two sides in the generator.The setting of the auxiliary device enables the water receiving box to receive lithium bromide dilute solution and be lifted to a fixed point on the top of the wave-shaped pipes to be poured, so that the upper surfaces of the wave-shaped pipes can also be completely infiltrated by the lithium bromide dilute solution, the effective contact area and contact time of the lithium bromide dilute solution and the wave-shaped pipes are significantly increased in the top-down pouring mode, and the heat exchange efficiency of the generator is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, specifically to a refrigeration machine based on low-temperature hot water as a power source. Background Technology

[0002] Lithium bromide (LBS) refrigerators are refrigeration devices that use lithium bromide solution as an absorbent and are widely used in air conditioning and industrial refrigeration systems. Their working principle is based on an absorption refrigeration cycle and mainly consists of an evaporator, absorber, regenerator, and condenser. Compared to traditional compression refrigeration machines, LBS refrigerators are more energy efficient, operate with lower noise, and are more environmentally friendly, but they have higher requirements for operating conditions and are mainly used in large systems and applications with abundant heat sources. LBS refrigerators have relatively low requirements for heat source temperatures and are particularly suitable for using low-temperature hot water (such as industrial waste heat, geothermal energy, and solar water heating) at temperatures between 85°C and 150°C as their driving energy source.

[0003] Chinese patent CN209295480U discloses a small lithium bromide refrigerator, comprising an outer cylinder, a sub-cylinder disposed within the outer cylinder, and a regenerator disposed outside the outer cylinder. The sub-cylinder houses a generator and an evaporator. A condenser and an absorber are disposed between the sub-cylinder and the outer cylinder. The generator, condenser, evaporator, and absorber are divided into upper and lower parts by a partition located in the middle of the outer cylinder and sub-cylinder. The bottom of the generator is connected to a first spray plate above the absorber via a pipe through the regenerator. The bottom of the condenser is connected to a second spray plate above the evaporator via a U-shaped pipe. The bottom of the evaporator is connected to a third spray plate above the generator via a pipe through the regenerator. This patented small lithium bromide refrigerator reduces the need for a refrigerant water circulation pump, saving system power consumption; the use of a mother-daughter cylinder and coil configuration makes the system layout more compact and the equipment smaller.

[0004] However, the current chiller has the following problems: when the low-temperature hot water flows through the corrugated tube in the generator, the corrugated tube is not easy to fully contact the dilute lithium bromide solution in the generator, so the heat carried by the low-temperature hot water cannot be efficiently transferred to the dilute lithium bromide solution, reducing the heat exchange efficiency and thus affecting the cooling effect. Therefore, we propose a chiller based on low-temperature hot water as power. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a refrigeration unit based on low-temperature hot water as a power source, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a chiller powered by low-temperature hot water, comprising a chiller body, a generator disposed on the front side of the chiller body, an inlet pipe and an outlet pipe fixed on both sides of the generator, a plurality of corrugated pipes uniformly and equidistantly fixed between the inlet pipe and the outlet pipe, an auxiliary device disposed inside the generator, the auxiliary device comprising a drive assembly disposed on the top of the generator, and crossbars fixed on both sides inside the generator, a connecting plate fixed at the bottom of the moving end of the drive assembly, a plurality of U-shaped frames uniformly and equidistantly fixed at the bottom of the connecting plate, a water receiving box fixed on the outer wall of the U-shaped frames, a drain outlet provided on both sides of the water receiving box, an L-shaped through-hole plate vertically penetrating and slidably installed on both sides of the inside of the water receiving box, a copper spring sheet disposed between the L-shaped through-hole plate and the top of the water receiving box, and a plurality of T-shaped elastic telescopic rods uniformly and equidistantly fixed at the bottom of the crossbars.

[0007] According to the above technical solution, the drive assembly includes a U-shaped frame fixed to the top of the generator. A screw is rotatably installed inside the U-shaped frame. The screw is driven by a forward and reverse motor. A sliding plate is threaded to the outside of the screw. The sliding plate is slidably installed inside the U-shaped frame. A connecting column is fixed to the bottom of the sliding plate. The connecting column extends vertically through the top of the generator and is the moving end of the drive assembly.

[0008] According to the above technical solution, a linear motion sealing structure is provided between the connecting column and the through groove of the generator.

[0009] According to the above technical solution, the water receiving box is located between two adjacent corrugated pipes, and the telescopic end of the T-shaped elastic telescopic rod is located on the movement trajectory of the L-shaped through-hole plate.

[0010] According to the above technical solution, the outer wall of the L-shaped through-hole plate is provided with an opening, and the opening of the L-shaped through-hole plate is staggered from the drain outlet of the water receiving box.

[0011] According to the above technical solution, the generator is also equipped with a dispersion device. The dispersion device includes a U-shaped convex column plate that runs horizontally through and is slidably installed inside the U-shaped frame. Fixing rods are fixed on both sides of the outer wall of the U-shaped convex column plate, and the two fixing rods are located on both sides of the water receiving box. Several dispersion columns are evenly and equidistantly fixed at the bottom of the fixing rods.

[0012] According to the above technical solution, a protruding column is fixed on the top of the U-shaped convex column plate, and a sloping groove plate is slidably installed between the interiors of several of the spiral frames. Several sloping grooves are opened on the top of the sloping groove plate, and the protruding column of the U-shaped convex column plate is slidably installed inside the sloping groove of the sloping groove plate. Agitating plates are fixed on the side of several of the dispersing columns away from the water receiving box, and corrugated plates are fixed on both sides of the inner wall of the generator.

[0013] According to the above technical solution, the wavy surfaces of the two wavy plates are staggered, and both sides of the inclined groove plate are semi-circular. The semi-circular shape of the inclined groove plate is in contact with the outer wall of the wavy surface of the two wavy plates respectively.

[0014] According to the above technical solution, an anti-crystallization device is provided at the corrugated tube. The anti-crystallization device includes several ring rods fixed to the top of the connecting plate. Several rings are opened at the top of the ring rods. The rings of the ring rods are sleeved on the outer wall of the corrugated tube, and the rings of the ring rods are in clearance fit with the outer wall of the corrugated tube. Scraper rings are fixed at the top and bottom of the rings of the ring rods.

[0015] According to the above technical solution, a fixing plate is fixed to the top of the inner wall of the corrugated tube, a spiral groove column is rotatably installed at the bottom of the fixing plate, a spiral groove is opened on the outer wall of the spiral groove column, an agitator is fixed to the bottom of the spiral groove column, an inner protrusion ring is embedded in the top of the ring rod, and a protrusion for sliding connection with the spiral groove of the spiral groove column is fixed on the inner wall of the inner protrusion ring.

[0016] This invention provides a refrigeration unit powered by low-temperature hot water. It offers the following advantages: (1) By setting up an auxiliary device, the present invention enables the water receiving box to receive the dilute lithium bromide solution and lift it to the top of the corrugated tube and tilt it at a fixed point, ensuring that the upper surface of the corrugated tube can also be completely wetted by the dilute lithium bromide solution. This top-down spraying method significantly increases the effective contact area and contact time between the dilute lithium bromide solution and the corrugated tube, thereby greatly improving the heat exchange efficiency of the generator.

[0017] (2) By setting up a dispersion device, the dispersion column discharges lithium bromide dilute solution to the drain of the dispersion water box, ensuring that the lithium bromide dilute solution is evenly covered on the surface of the corrugated tube, thereby maximizing the effective heat exchange area of ​​the corrugated tube. This significantly increases the contact area between the lithium bromide dilute solution and the heat pipe wall, thereby improving the steam generation efficiency of the generator. At the same time, the stirring plate will stir the lithium bromide dilute solution, thereby breaking the temperature and concentration stratification of the lithium bromide dilute solution, preventing local areas from crystallizing due to oversaturation. Furthermore, the stirring of the stirring plate ensures that the concentration of lithium bromide dilute solution scooped up from the water box each time is consistent. This provides a basis for the uniform distribution of the solution on the corrugated tube and avoids heat exchange fluctuations caused by the uneven properties of the lithium bromide dilute solution.

[0018] (3) By setting up an anti-crystallization device, the present invention enables the scraper ring to remove lithium bromide crystals attached to the wall of the corrugated tube in a timely manner, thereby avoiding the formation of lithium bromide crystals on the surface of the corrugated tube due to splashing of dilute lithium bromide solution and temperature fluctuations, which directly blocks the heat transfer channel and causes the unit efficiency to drop sharply or even shut down; at the same time, the stirring blade will further stir the dilute lithium bromide solution in the generator. The strong turbulence generated by the stirring blade can instantly break up and dissolve the crystal particles scraped off by the scraper ring, so that they are evenly dispersed in the dilute solution again. This completely breaks the vicious cycle of "cleaning-accumulation-re-cleaning", prevents the local solution from becoming oversaturated due to the dissolution of a large amount of crystals, and avoids the problem of the crystals scraped off by the scraper ring accumulating at the bottom of the generator to form a high concentration area, which is very easy to clump again. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the entire invention; Figure 2 This is a partial cross-sectional schematic diagram of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the auxiliary device of the present invention; Figure 5 This is a schematic diagram of the dispersion device of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the dispersion device of the present invention. Figure 2 ; Figure 7 This is a partial structural schematic diagram of the dispersion device of the present invention; Figure 8 This is a schematic diagram of the anti-crystallization device of the present invention; Figure 9 This is a schematic diagram showing the water receiving box and L-shaped port plate of the present invention.

[0020] In the diagram: 1. Refrigeration unit body; 2. Generator; 3. Inlet pipe; 4. Outlet pipe; 5. Corrugated pipe; 6. Drive assembly; 61. U-shaped frame; 62. Screw; 63. Slide plate; 64. Connecting column; 7. Auxiliary device; 71. Connecting plate; 72. U-shaped frame; 73. Water receiving box; 74. L-shaped through plate; 75. Copper spring sheet; 76. Crossbar; 77. T-shaped elastic telescopic rod; 8. Dispersing device; 81. U-shaped convex column plate; 82. Inclined groove plate; 83. Fixing rod; 84. Dispersing column; 85. Corrugated plate; 86. Stirring blade; 9. Anti-crystallization device; 91. Ring rod; 92. Scraper ring; 93. Inner convex ring; 94. Stirring blade; 95. Spiral groove column; 96. Fixing plate. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Please see Figure 1 - Figure 8 One embodiment of the present invention is as follows: a chiller powered by low-temperature hot water includes a chiller body 1, a generator 2 is disposed on the front side of the chiller body 1, an inlet pipe 3 and an outlet pipe 4 are respectively fixed on both sides of the generator 2, and a plurality of corrugated pipes 5 are evenly and equidistantly fixed between the inlet pipe 3 and the outlet pipe 4. An auxiliary device 7 is disposed inside the generator 2, the auxiliary device 7 includes a drive assembly 6 disposed on the top of the generator 2 and crossbars 76 fixed on both sides inside the generator 2. The drive assembly 6 includes a U-shaped frame 61 fixed on the top of the generator 2, and a screw 62 is rotatably mounted inside the U-shaped frame 61. The screw 62 is driven by a forward and reverse reversing motor, and the external thread of the screw 62 is... A sliding plate 63 is connected and is slidably installed inside the U-shaped frame 61. A connecting column 64 is fixed at the bottom of the sliding plate 63 and extends vertically through the top of the generator 2. The connecting column 64 is the moving end of the drive component 6. A axial linear motion sealing structure is provided between the connecting column 64 and the through groove of the generator 2. The axial linear motion sealing structure is existing technology and belongs to the reciprocating shaft (rod) through-wall dynamic seal known in the mechanical field. Those skilled in the art can directly select a soft packing box, a metal bellows isolation sleeve, or a combination of O-rings and guide sleeves according to the vacuum degree inside the generator 2, the low temperature hot water working conditions of 85 to 150°C, and the weak corrosiveness of lithium bromide solution. A connecting plate 71 is fixed at the bottom of the moving end of the drive component 6.

[0023] Several U-shaped brackets 72 are evenly and equidistantly fixed to the bottom of the connecting plate 71. A water receiving box 73 is fixed to the outer wall of each U-shaped bracket 72. Drainage outlets are provided on both sides of the water receiving box 73. L-shaped through-hole plates 74 are vertically threaded through and slidably installed on both sides of the interior of the water receiving box 73. A copper spring piece 75 is provided between the L-shaped through-hole plate 74 and the top of the water receiving box 73. Several T-shaped elastic telescopic rods 77 are evenly and equidistantly fixed to the bottom of the crossbar 76. The water receiving box 73 is located between two adjacent corrugated pipes 5. The T-shaped elastic telescopic rods 77... The telescopic end is located on the movement trajectory of the L-shaped through-hole plate 74. The outer wall of the L-shaped through-hole plate 74 has an opening. The opening of the L-shaped through-hole plate 74 is staggered from the drain outlet of the water receiving box 73. Through the above structure, the water receiving box 73 receives the dilute lithium bromide solution and is lifted to the top of the corrugated pipe 5 and tilted at a fixed point, ensuring that the upper surface of the corrugated pipe 5 can also be completely wetted by the dilute lithium bromide solution. This top-down spraying method significantly increases the effective contact area and contact time between the dilute lithium bromide solution and the corrugated pipe 5.

[0024] The generator 2 is also equipped with a dispersion device 8. The dispersion device 8 includes a U-shaped convex plate 81 that runs horizontally through and slides inside the U-shaped frame 72. Fixing rods 83 are fixed on both sides of the outer wall of the U-shaped convex plate 81, and the two fixing rods 83 are located on both sides of the water receiving box 73. Several dispersion columns 84 are evenly and equidistantly fixed at the bottom of the fixing rods 83. Through the above structure, the dispersion columns 84 will discharge lithium bromide dilute solution to the drain of the water receiving box 73, ensuring that the lithium bromide dilute solution is evenly covered on the surface of the corrugated pipe 5.

[0025] A protruding column is fixed to the top of the U-shaped convex column plate 81. A sloping groove plate 82 is horizontally slidably installed between the interiors of several U-shaped frames 72. Several sloping grooves are opened on the top of the sloping groove plate 82. The protruding column of the U-shaped convex column plate 81 is slidably installed inside the sloping groove of the sloping groove plate 82. A stirring plate 86 is fixed on the side of several dispersing columns 84 away from the water receiving box 73. Corrugated plates 85 are fixed on both sides of the inner wall of the generator 2. The corrugated surfaces of the two corrugated plates 85 are staggered. Both sides of the sloping groove plate 82 are semi-circular. The semi-circular shape of the sloping groove plate 82 is in contact with the outer wall of the corrugated surface of the two corrugated plates 85. Through the above structure, the stirring plate 86 can break the temperature and concentration stratification of the lithium bromide dilute solution, prevent local areas from crystallizing due to supersaturation, and the stirring of the stirring plate 86 ensures that the concentration of the lithium bromide dilute solution scooped up by the water receiving box 73 is consistent each time. This provides a basis for the uniform distribution of the solution on the corrugated tube 5.

[0026] During use, as the low-temperature hot water flows through the inlet pipe 3 of the generator 2, through the corrugated pipe 5, and out through the outlet pipe 4, the operator drives the screw 62 to rotate via a forward and reverse motor. The screw 62 drives the slide plate 63 to move up and down along the inside of the U-shaped frame 61. The U-shaped frame 61 drives the connecting plate 71 to move up and down via the connecting column 64. During each upward movement of the connecting plate 71, the connecting plate 71 drives the water receiving box 73 to move upward via the U-shaped frame 72. The water receiving box 73 receives the dilute lithium bromide solution in the generator 2 and moves upward. When the upper water receiving box 73 moves the L-shaped port plate 74 to the position of the T-shaped elastic telescopic rod 77, the L-shaped port plate 74 stops. As the water receiving box 73 continues to move upward, the copper spring 75 between the L-shaped through-hole plate 74 and the water receiving box 73 is compressed, and the drain outlet of the water receiving box 73 coincides with the opening of the L-shaped through-hole plate 74. At this time, the dilute lithium bromide solution in the water receiving box 73 will be discharged through the drain outlet of the water receiving box 73, so that the water receiving box 73 receives the dilute lithium bromide solution and is raised to the top of the corrugated tube 5 and tilted at a fixed point, ensuring that the upper surface of the corrugated tube 5 can also be completely wetted by the dilute lithium bromide solution. This top-down spraying method significantly increases the effective contact area and contact time between the dilute lithium bromide solution and the corrugated tube 5, thereby greatly improving the heat exchange efficiency of the generator 2.

[0027] It should be noted that after the copper spring 75 between the L-shaped port plate 74 and the water receiving box 73 is compressed, when the water receiving box 73 continues to move upward, the water receiving box 73 will drive the L-shaped port plate 74 to squeeze the telescopic end of the T-shaped elastic telescopic rod 77, and the telescopic end of the T-shaped elastic telescopic rod 77 will adaptively contract.

[0028] During the process of the lithium bromide dilute solution in the water receiving box 73 being discharged through the drain port of the water receiving box 73, the dispersion column 84 will disperse the lithium bromide dilute solution discharged through the drain port of the water receiving box 73, ensuring that the lithium bromide dilute solution is evenly covered on the surface of the corrugated tube 5, thereby maximizing the effective heat exchange area of ​​the corrugated tube 5. This significantly increases the contact area between the lithium bromide dilute solution and the heat pipe wall, thereby improving the steam generation efficiency of the generator 2.

[0029] Each time the connecting plate 71 causes the retractable frame 72 to shift, the retractable frame 72 will cause the inclined groove plate 82 to move accordingly. Under the synergistic action of the wavy surfaces of the two wavy plates 85, the wavy surfaces of the two wavy plates 85 will push the inclined groove plate 82 to move back and forth. The inclined groove of the inclined groove plate 82 will push the protrusion of the U-shaped convex plate 81, causing the U-shaped convex plate 81 to move back and forth. The U-shaped convex plate 81 drives the stirring plate 86 to move back and forth through the dispersing column 84. At the water receiving box 73, When the lithium bromide dilute solution is below the surface in generator 2, the stirring plate 86 will agitate the lithium bromide dilute solution, thereby breaking up the temperature and concentration stratification of the lithium bromide dilute solution, preventing local areas from crystallizing due to supersaturation, and the agitation of the stirring plate 86 ensures that the concentration of lithium bromide dilute solution scooped up by the water receiving box 73 is consistent each time. This provides a basis for the uniform distribution of the solution on the corrugated tube 5 and avoids heat exchange fluctuations caused by the uneven properties of the lithium bromide dilute solution.

[0030] Please see Figure 1 - Figure 8 Based on the above embodiments, in another embodiment of the present invention, an anti-crystallization device 9 is provided at the corrugated tube 5. The anti-crystallization device 9 includes several ring rods 91 fixed to the top of the connecting plate 71. Several rings are opened at the top of the ring rods 91. The rings of the ring rods 91 are sleeved on the outer wall of the corrugated tube 5, and the rings of the ring rods 91 are in clearance fit with the outer wall of the corrugated tube 5. Scraping rings 92 are fixed at the top and bottom of the rings of the ring rods 91. Through the above structure, the scraping rings 92 can scrape the surface of the corrugated tube 5, so that the scraping rings 92 can remove the lithium bromide crystals attached to the tube wall of the corrugated tube 5 in time.

[0031] A fixing plate 96 is fixed to the top of the inner wall of the corrugated tube 5. A spiral groove column 95 is rotatably installed at the bottom of the fixing plate 96. A spiral groove is opened on the outer wall of the spiral groove column 95. An agitator 94 is fixed to the bottom of the spiral groove column 95. An inner protrusion ring 93 is embedded in the top of the ring rod 91. A protrusion for sliding connection with the spiral groove of the spiral groove column 95 is fixed on the inner wall of the inner protrusion ring 93. Through the above structure, the strong turbulence generated by the agitator 94 can instantly disperse and dissolve the crystal particles scraped off by the scraper ring 92, so that they are uniformly dispersed in the dilute solution. This completely breaks the vicious cycle of "cleaning-accumulation-re-cleaning" and prevents the local solution from becoming oversaturated due to the dissolution of a large amount of crystals.

[0032] During use, as the connecting column 64 moves the connecting plate 71, the connecting plate 71 moves the scraper ring 92 along with it via the ring rod 91. The scraper ring 92 scrapes the surface of the corrugated tube 5, thus enabling the scraper ring 92 to remove the lithium bromide crystals attached to the tube wall of the corrugated tube 5 in a timely manner. This avoids the problem of lithium bromide crystals forming on the surface of the corrugated tube 5 due to splashing of dilute lithium bromide solution and temperature fluctuations, which directly blocks the heat transfer channel and causes a sudden drop in unit efficiency or even shutdown.

[0033] As the connecting plate 71 moves the ring rod 91, the ring rod 91 moves the inner convex ring 93. The convex point of the inner convex ring 93 slides along the spiral groove of the spiral column 95, and the inner convex ring 93 drives the spiral column 95 to rotate. The spiral column 95 drives the stirring blade 94 to rotate, and the stirring blade 94 further agitates the lithium bromide dilute solution in the generator 2. The strong turbulence generated by the stirring blade 94 can instantly break up and dissolve the crystal particles scraped off by the scraper ring 92, so that they are evenly dispersed back into the dilute solution. This completely breaks the vicious cycle of "cleaning-accumulation-re-cleaning", prevents the local solution from becoming oversaturated due to the dissolution of a large amount of crystals, and avoids the problem of the crystals scraped off by the scraper ring 92 accumulating at the bottom of the generator 2 to form a high concentration area, which is very easy to clump again.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A chiller powered by low-temperature hot water, comprising a chiller body (1), wherein a generator (2) is disposed on the front side of the chiller body (1), characterized in that: The generator (2) has an inlet pipe (3) and an outlet pipe (4) fixed on both sides respectively. Several corrugated pipes (5) are evenly and equidistantly fixed between the inlet pipe (3) and the outlet pipe (4). An auxiliary device (7) is provided inside the generator (2). The auxiliary device (7) includes a drive assembly (6) set on the top of the generator (2) and crossbars (76) fixed on both sides inside the generator (2). A connecting plate (71) is fixed at the bottom of the moving end of the drive assembly (6). 1) Several U-shaped frames (72) are evenly and equidistantly fixed at the bottom. A water receiving box (73) is fixed on the outer wall of the U-shaped frame (72). Drainage outlets are provided on both sides of the water receiving box (73). An L-shaped through plate (74) is vertically and slidably installed on both sides of the inside of the water receiving box (73). A copper spring plate (75) is provided between the L-shaped through plate (74) and the top of the water receiving box (73). Several T-shaped elastic telescopic rods (77) are evenly and equidistantly fixed at the bottom of the crossbar (76).

2. A refrigeration unit based on low-temperature hot water as a power source according to claim 1, characterized in that: The drive assembly (6) includes a U-shaped frame (61) fixed to the top of the generator (2). A screw (62) is rotatably mounted inside the U-shaped frame (61). The screw (62) is driven by a forward and reverse motor. A sliding plate (63) is threaded to the outside of the screw (62). The sliding plate (63) is slidably mounted inside the U-shaped frame (61). A connecting column (64) is fixed to the bottom of the sliding plate (63). The connecting column (64) extends vertically through the top of the generator (2). The connecting column (64) is the moving end of the drive assembly (6).

3. A refrigeration unit based on low-temperature hot water as power source according to claim 2, characterized in that: A linear motion sealing structure is provided between the connecting column (64) and the through groove of the generator (2).

4. A chiller based on low-temperature hot water as power source according to claim 1, characterized in that: The water receiving box (73) is located between two adjacent corrugated pipes (5), and the telescopic end of the T-shaped elastic telescopic rod (77) is located on the movement trajectory of the L-shaped through plate (74).

5. A chiller based on low-temperature hot water as power source according to claim 1, characterized in that: The outer wall of the L-shaped through-hole plate (74) is provided with an opening, and the opening of the L-shaped through-hole plate (74) is staggered from the drain outlet of the water receiving box (73).

6. A chiller based on low-temperature hot water as power source according to claim 1, characterized in that: The generator (2) is also equipped with a dispersion device (8). The dispersion device (8) includes a U-shaped convex plate (81) that runs horizontally through and is slidably installed inside the U-shaped frame (72). The outer walls of the U-shaped convex plate (81) are fixed with fixing rods (83) on both sides, and the two fixing rods (83) are located on both sides of the water receiving box (73). The bottom of the fixing rods (83) is evenly and equidistantly fixed with a number of dispersion columns (84).

7. A refrigeration unit based on low-temperature hot water as power source according to claim 6, characterized in that: The top of the U-shaped convex plate (81) is fixed with a convex column, and a sloping groove plate (82) is slidably installed between the interiors of several of the spiral frames (72). The top of the sloping groove plate (82) is provided with several sloping grooves. The convex column of the U-shaped convex plate (81) is slidably installed inside the sloping groove of the sloping groove plate (82). Agitator plates (86) are fixed on the side of several of the dispersing columns (84) away from the water receiving box (73). Corrugated plates (85) are fixed on both sides of the inner wall of the generator (2).

8. A chiller based on low-temperature hot water as power source according to claim 7, characterized in that: The two corrugated plates (85) are arranged in an alternating manner, and both sides of the inclined groove plate (82) are semi-circular. The semi-circular shape of the inclined groove plate (82) is in contact with the outer wall of the corrugated surface of the two corrugated plates (85).

9. A refrigeration unit based on low-temperature hot water as power source according to claim 1, characterized in that: An anti-crystallization device (9) is provided at the corrugated pipe (5). The anti-crystallization device (9) includes several ring rods (91) fixed to the top of the connecting plate (71). Several rings are opened at the top of the ring rods (91). The rings of the ring rods (91) are sleeved on the outer wall of the corrugated pipe (5), and the rings of the ring rods (91) are in clearance fit with the outer wall of the corrugated pipe (5). Scraping rings (92) are fixed at the top and bottom of the rings of the ring rods (91).

10. A refrigeration unit based on low-temperature hot water as power source according to claim 9, characterized in that: A fixing plate (96) is fixed to the top of the inner wall of the corrugated tube (5). A spiral groove column (95) is rotatably installed at the bottom of the fixing plate (96). A spiral groove is opened on the outer wall of the spiral groove column (95). An agitator (94) is fixed to the bottom of the spiral groove column (95). An inner protrusion ring (93) is embedded in the top of the ring rod (91). A protrusion for sliding connection with the spiral groove of the spiral groove column (95) is fixed on the inner wall of the inner protrusion ring (93).

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