Stirring transmission structure for water chiller
By introducing a geared motor-driven stirring transmission structure into the chiller, and utilizing symmetrically arranged stirring paddles to eliminate heat transfer dead zones, the problem of uneven drinking water temperature in the chiller is solved, thus improving the stability and safety of the equipment.
Patent Information
- Application Number
- CN202520348031.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing chilled water machines have heat transfer dead zones, resulting in uneven drinking water temperature, and are prone to damage, pipe rupture, and water outlet blockage.
The stirring transmission structure driven by a geared motor, through belt drive components and stirring components, including symmetrically arranged upper and lower stirring blades, achieves stirring and turbulence of the heat transfer medium, eliminates heat transfer dead zones, and improves temperature uniformity and fluidity.
It effectively improves the uniformity and controllability of drinking water temperature, avoids damage to the chiller and pipe problems, and enhances the stability and safety of the equipment.
Smart Images
Figure CN223787006U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chilled water machine technology, and in particular to a stirring transmission structure for chilled water machines. Background Technology
[0002] An ice water machine is used to supply ice water to control the temperature of the dough during mixing, thereby improving the mixing quality of the dough.
[0003] In existing technology, chilled water machines cool drinking water using a compression refrigeration unit. Their structure includes a refrigeration unit assembly, a refrigerant coil, and a drinking water coil. Tap water serves as the heat transfer medium between the refrigerant coil and the drinking water coil. Under the action of the refrigeration unit assembly, the refrigerant in the refrigerant coil changes from a liquid to a gaseous state, absorbing heat, which is then transferred through the heat transfer medium to cool the drinking water in the drinking water coil. However, due to the long length and bends of the drinking water coil, heat transfer dead zones are created, resulting in uneven and uncontrollable drinking water temperature inside. Furthermore, to ensure the outlet water temperature meets usage requirements, the refrigeration unit assembly further lowers the cooling temperature. At this point, localized freezing can occur in the drinking water coil, leading to pipe ruptures and water outlet blockages. Utility Model Content
[0004] Therefore, it is necessary to provide a stirring and transmission structure for chilled water machines to address the problems of heat transfer dead zones inside existing chilled water machines, which lead to uneven and uncontrollable drinking water temperature inside the drinking water coil, and the chilled water machines being prone to damage, pipe rupture, and water outlet blockage.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A stirring transmission structure for a chilled water machine includes a geared motor arranged on the outer top wall of the chilled water machine. The output end of the geared motor is connected to a drive shaft via a belt drive assembly. The shaft end of the drive shaft extends into the interior of the chilled water machine. A stirring assembly is fitted onto the shaft end of the drive shaft. The stirring assembly includes two stirring blades, which are symmetrically arranged at intervals along the axial direction of the drive shaft.
[0007] The geared motor drives the transmission shaft to rotate, thereby causing the two agitators to rotate. This causes the upper agitator to press down on the heat transfer medium inside the chiller, while the lower agitator lifts up the heat transfer medium inside the chiller, thus causing the heat transfer medium between the two agitators to flow in all directions.
[0008] As a further improvement to the above technical solution:
[0009] The geared motor is fixed to the top cover of the chiller via a mounting plate.
[0010] The upper cover of the chiller is fitted with a bearing housing, which is rotatably mounted to the drive shaft via a bearing assembly.
[0011] The bearing assembly includes several stainless steel bearings.
[0012] The mounting plate is fitted with tension bolts for adjusting the tension of the belt drive assembly.
[0013] The belt drive assembly includes a drive pulley connected to the output end of the geared motor and a driven pulley fixed to the end of the drive shaft. A synchronous belt is installed between the drive pulley and the driven pulley.
[0014] The structure of a single stirring paddle is as follows: it includes a circumferentially shaped bushing, and several paddles are evenly spaced along the circumference on the outer circumference of the bushing, with each paddle being installed at an angle relative to the axis of the bushing.
[0015] In a single agitator, the individual blade is installed at a 45° angle relative to the axis of the bushing.
[0016] In a single agitator, a central hole is provided in the middle of the bushing, which is used for installation with a drive shaft.
[0017] In a single agitator, a locking bolt is fitted onto the bushing, which is used to lock the corresponding bushing onto the drive shaft.
[0018] The beneficial effects of this utility model are as follows:
[0019] This utility model features a compact and reasonable structure, and is easy to operate. By incorporating a geared motor, belt drive assembly, drive shaft, and stirring assembly, it continuously stirs the heat transfer medium inside the chiller, thereby improving the fluidity of the heat transfer medium and eliminating heat transfer dead zones within the chiller. This effectively improves the temperature uniformity of the drinking water inside the water coil, ensuring a uniform and controllable temperature and preventing problems such as pipe rupture and water outlet blockage. Simultaneously, the stirring assembly uses symmetrically arranged stirring paddles along the drive shaft. The upper paddle presses the heat transfer medium downwards, while the lower paddle lifts it upwards. The continuous collision of the upper and lower flowing heat transfer media causes the heat transfer medium inside the chiller to continuously diffuse and surge outwards, further improving the fluidity of the heat transfer medium and effectively enhancing the stability and safety of the chiller. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is a partial enlargement of the present invention. Figure 1 .
[0022] Figure 3 This is a partial enlargement of the present invention. Figure 2 .
[0023] Figure 4 This is a front view of the agitator (the arrows in the figure indicate the flow direction of the heat transfer medium).
[0024] Figure 5 This is a top view of the agitator (the arrows in the figure indicate the flow direction of the heat transfer medium).
[0025] Figure 6 This is a schematic diagram of the present invention in its working state.
[0026] The components include: 1. Chilled water machine top cover; 2. Mounting plate; 3. Gear motor; 4. Tensioning bolt; 5. Drive pulley; 6. Driven pulley; 7. Synchronous belt; 8. Agitator; 9. Bearing assembly; 10. Bearing housing; 11. Drive shaft; 12. Chilled water machine outer shell; 13. Insulation layer; 14. Refrigerant coil; 15. Drinking water coil; 16. Refrigeration equipment components.
[0027] 801. Bushing; 802. Paddle plate; 803. Locking bolt. Detailed Implementation
[0028] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0029] The structure and function of this utility model are as follows:
[0030] like Figures 1-6 As shown, a stirring transmission structure for a chiller includes a geared motor 3 arranged on the outer top wall of the chiller. The output end of the geared motor 3 is connected to a drive shaft 11 via a belt drive assembly. The shaft end of the drive shaft 11 extends into the chiller. A stirring assembly is installed on the shaft end of the drive shaft 11. The stirring assembly includes two stirring paddles 8, which are symmetrically arranged at an axial distance along the drive shaft 11. The geared motor 3 drives the drive shaft 11 to rotate, thereby causing the two stirring paddles 8 to rotate. This causes the upper stirring paddle 8 to press down on the heat transfer medium inside the chiller, while the lower stirring paddle 8 lifts up the heat transfer medium inside the chiller, thus causing the heat transfer medium between the two stirring paddles 8 to flow in all directions. In this invention, two symmetrically arranged stirring paddles 8 are provided. The upper stirring paddle 8 can press the heat transfer medium downward, while the lower stirring paddle 8 can lift the heat transfer medium upward. The upper and lower flowing heat transfer media collide continuously, thereby causing the heat transfer medium inside the chiller to continuously diffuse and surge to the surroundings, further improving the fluidity of the heat transfer medium and effectively improving the stability and safety of the chiller.
[0031] The stirring and transmission structure of this utility model is installed on a chiller, such as... Figure 6 As shown, the structure of the chiller includes a chiller housing 12, and a partition is installed inside the chiller housing 12. The partition divides the internal space of the chiller housing 12 into a heat exchange space and an installation space. A chiller cover 1 is installed on the top of the chiller housing 12. The chiller cover 1 is used to cover the heat exchange space, thereby isolating the heat exchange space from the external environment.
[0032] The heat exchange space contains a heat transfer medium. A refrigerant coil 14 and a drinking water coil 15 are installed in the heat exchange space. The heat transfer medium immerses the refrigerant coil 14 and the drinking water coil 15. The inlet of the drinking water coil 15 is connected to the inlet connector installed on the side wall of the chiller housing 12. The outlet of the drinking water coil 15 is connected to the outlet connector installed on the side wall of the chiller housing 12. The drinking water to be cooled flows into the drinking water coil 15 through the inlet connector, exchanges heat with the heat transfer medium inside the heat exchange space, and then flows out through the outlet connector.
[0033] The refrigeration equipment assembly 16 is installed inside the installation space. The expansion valve outlet of the refrigeration equipment assembly 16 is connected to the refrigerant inlet of the refrigerant coil 14, and the compressor inlet of the refrigeration equipment assembly 16 is connected to the refrigerant outlet of the refrigerant coil 14.
[0034] The compressor in the refrigeration equipment assembly 16 compresses the refrigerant into a high-pressure, high-temperature gas. This gas then enters the condenser in the refrigeration equipment assembly 16 to dissipate heat and condense into a high-pressure liquid refrigerant. After condensation, the high-pressure liquid refrigerant passes through the expansion valve to reduce its pressure, becoming a low-pressure, low-temperature liquid or gas-liquid mixture. This low-pressure, low-temperature refrigerant enters the refrigerant coil 14, where it exchanges heat with the heat transfer medium (water) in the heat exchange space (cooling). Furthermore, it exchanges heat with the drinking water inside the drinking water coil 15 through the heat transfer medium (cooling).
[0035] The heat exchange space is also equipped with an insulation layer 13, which can improve the heat insulation / cold insulation performance of the heat exchange space and reduce energy consumption.
[0036] The geared motor 3 is fixed to the upper cover 1 of the chiller via the mounting plate 2. The geared motor 3 is installed outside the heat exchange space and supported by the L-shaped mounting plate 2. A safety cover is installed on the outside of the geared motor 3 and the belt drive assembly to protect the geared motor 3 and the belt drive assembly.
[0037] A bearing housing 10 is fitted onto the top cover 1 of the chiller, and the bearing housing 10 is rotatably mounted to the drive shaft 11 via a bearing assembly 9. By setting the bearing housing 10 and the bearing assembly 9, the rotational smoothness of the drive shaft 11 can be effectively improved.
[0038] Bearing assembly 9 includes several stainless steel bearings. Stainless steel bearings have high strength, good wear resistance and corrosion resistance, thus preventing rust contamination of the heat transfer medium during contact with the heat transfer medium in the heat exchange space.
[0039] The mounting plate 2 is fitted with a tensioning bolt 4 for adjusting the tension of the belt drive assembly. The tensioning bolt 4 is installed between the mounting plate 2 and the motor support. By rotating the tensioning bolt 4, the distance between the mounting plate 2 and the motor support can be adjusted, thereby adjusting the distance between the driving pulley 5 and the driven pulley 6, and thus adjusting the tension of the synchronous belt 7, ensuring that the belt drive assembly can be in optimal working condition.
[0040] The belt drive assembly includes a drive pulley 5 connected to the output end of the geared motor 3, and a driven pulley 6 fixed to the end of the drive shaft 11. A synchronous belt 7 is fitted between the drive pulley 6 and the driven pulley 5. By using a belt drive assembly, the noise generated during the operation of the chiller can be reduced.
[0041] The structure of a single impeller 8 is as follows: it includes a circumferentially shaped bushing 801, and several impeller plates 802 are evenly spaced along the circumference on the outer circumference of the bushing 801. Each impeller plate 802 is installed at an angle relative to the axis of the bushing 801. The individual impeller plate 802 is made of a square thin plate, and its inclined installation can be made of stainless steel or polytetrafluoroethylene.
[0042] like Figure 3 As shown, the two stirring paddles 8 are symmetrically installed, so that the paddle plates 802 are symmetrically distributed. This ensures that the paddle plates 802 in the upper stirring paddle 8 can press the heat transfer medium downward during rotation, and the paddle plates 802 in the lower stirring paddle 8 can lift the heat transfer medium upward during rotation.
[0043] like Figure 4 As shown, in a single impeller 8, the single impeller plate 802 is installed at an angle of 45° relative to the axis of the bushing 801. At this angle, the stirring and turbulence effect of the impeller 8 is optimal.
[0044] In a single agitator 8, a central hole is formed in the middle of the bushing 801 for mounting with the drive shaft 11. A locking bolt 803 is fitted onto the bushing 801 to secure it to the drive shaft 11. The central hole and drive shaft 11 are tightly fitted, and further secured by the locking bolt 803, thereby fixing the agitator 8 to the outer circumferential surface of the drive shaft 11.
[0045] The working process of this utility model is as follows:
[0046] The refrigeration equipment component 16 cools the heat transfer medium in the heat exchange space through the refrigerant in the refrigerant coil 14. At the same time, the geared motor 3 starts and drives the drive shaft 11 to rotate. The drive shaft 11 drives the stirring component to rotate. The two rotating stirring paddles 8 stir and turbulent the heat transfer medium inside the heat exchange space, thereby effectively improving the flow of the heat transfer medium and thus improving the heat exchange efficiency and heat exchange uniformity between the heat transfer medium and the drinking water coil 15, so as to avoid local icing inside the drinking water coil 15.
[0047] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.
Claims
1. A stirring transmission structure for a chilled water machine, characterized in that: The system includes a geared motor (3) arranged on the top wall of the chiller. The output end of the geared motor (3) is connected to the drive shaft (11) via a belt drive assembly. The shaft end of the drive shaft (11) extends into the chiller. A stirring assembly is installed on the shaft end of the drive shaft (11). The stirring assembly includes two stirring paddles (8). The two stirring paddles (8) are symmetrically arranged at intervals along the axial direction of the drive shaft (11). The geared motor (3) drives the transmission shaft (11) to rotate, thereby causing the two stirring paddles (8) to rotate. This causes the upper stirring paddle (8) to press down on the heat transfer medium inside the chiller, while the lower stirring paddle (8) lifts up the heat transfer medium inside the chiller, thus causing the heat transfer medium between the two stirring paddles (8) to flow in all directions.
2. The stirring transmission structure for a chiller as described in claim 1, characterized in that: The geared motor (3) is fixed to the upper cover (1) of the chiller via the mounting plate (2).
3. The stirring transmission structure for a chiller as described in claim 2, characterized in that: A bearing seat (10) is fitted on the upper cover (1) of the chiller, and the bearing seat (10) is rotatably mounted to the drive shaft (11) via a bearing assembly (9).
4. The stirring transmission structure for a chiller as described in claim 3, characterized in that: The bearing assembly (9) includes several stainless steel bearings.
5. The stirring transmission structure for a chiller as described in claim 2, characterized in that: The mounting plate (2) is fitted with tensioning bolts (4) for adjusting the tension of the belt drive assembly.
6. The stirring transmission structure for a chiller as described in claim 1, characterized in that: The belt drive assembly includes a drive pulley (5) connected to the output end of the geared motor (3) and a driven pulley (6) fixed to the end of the drive shaft (11). A synchronous belt (7) is installed between the drive pulley (5) and the driven pulley (6).
7. The stirring transmission structure for a chiller as described in claim 1, characterized in that: The structure of a single stirring paddle (8) is as follows: it includes a circumferential bushing (801), and several paddles (802) are evenly spaced along the circumference on the outer circumferential surface of the bushing (801). Each paddle (802) is installed at an angle relative to the axis of the bushing (801).
8. The stirring transmission structure for a chiller as described in claim 7, characterized in that: In a single agitator (8), a single blade (802) is installed at a 45° angle relative to the axis of the bushing (801).
9. The stirring transmission structure for a chiller as described in claim 7, characterized in that: In a single agitator (8), a central hole is provided in the middle of the bushing (801), which is used to mate with the drive shaft (11) for installation.
10. The stirring transmission structure for a chiller as described in claim 7, characterized in that: In a single agitator (8), a locking bolt (803) is fitted on the bushing (801), and the locking bolt (803) is used to lock the corresponding bushing (801) onto the drive shaft (11).