Evaporative cooling type screw unit with protection mechanism
By introducing a shock-absorbing device and a push valve assembly into the evaporative cooling screw unit, the problems of equipment instability and low cooling efficiency caused by vibration are solved, and stable operation and efficient cooling of the equipment are achieved, meeting environmental protection requirements.
Patent Information
- Application Number
- CN202423068580.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing evaporative cooling screw units will vibrate during use, causing equipment instability and potentially damaging building structures. Traditional heat exchange methods cannot effectively cool the equipment and consume high energy.
The first shock-absorbing device and the second shock-absorbing device are used in combination with the piston plate, the shock-absorbing spring and the push valve assembly to realize the circulation of the coolant and accelerate the heat dissipation through liquid flow and vibration energy conversion, absorb the vibration of the compressor, and prevent resonance and coolant leakage.
It improves the stability and cooling efficiency of the equipment, reduces noise pollution, extends the life of the equipment, meets environmental protection requirements, and reduces energy consumption.
Smart Images
Figure CN223484556U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of screw compressor units, and more specifically, it relates to an evaporative cooling screw compressor unit with a protective mechanism. Background Technology
[0002] With increasing global focus on energy conservation and environmental protection, traditional refrigeration equipment is gradually being phased out due to its high energy consumption and pollution. Evaporative cooling screw chillers, with their pollution-free, emission-free, and low-energy consumption characteristics, meet the requirements of energy conservation and environmental protection, becoming an important development direction in the refrigeration equipment field. Furthermore, existing evaporative cooling screw chillers generate vibration during operation, and long-term, strong vibrations may damage the structure of the building where the unit is located, thus affecting the building's safety and stability. Moreover, traditional simple heat exchange methods cannot solve the cooling effect of screw chillers requiring long-term water exchange.
[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an evaporative cooling screw chiller with a protective mechanism, in order to achieve a more practical purpose. Utility Model Content
[0004] This invention provides an evaporative cooling screw compressor unit with a protective mechanism to overcome the aforementioned defects in the prior art.
[0005] The purpose and effect of this utility model of an evaporative cooling screw chiller unit with a protective mechanism are achieved by the following specific technical means:
[0006] An evaporative cooling screw chiller with a protective mechanism includes: an evaporative cooling tank, side mounting plates fixedly installed at both ends of the evaporative cooling tank, a first damping device and a second damping device slidably installed below the two side mounting plates, an outer mounting cover fixedly connected to one end of the evaporative cooling tank, an inlet and an outlet fixedly connected to the outer side of the outer mounting cover, the outer mounting cover being disposed on one side of the first damping device, a flow chamber provided inside the second damping device, a piston plate slidably installed inside the flow chamber, the piston plate being fixedly connected to the lower end of the side mounting plates, a damping spring fixedly installed inside the flow chamber, a second pipe assembly fixedly connected to the outer side of the second damping device, the second pipe assembly including an upper pipe and a pipe sleeve, the upper pipe sliding within the pipe sleeve, one end of the upper pipe communicating with the interior of the evaporative cooling tank, one end of the pipe sleeve communicating with the interior of the second damping device, and a flow pipe assembly fixedly connected between the first damping device and the second damping device.
[0007] In a further technical solution, a push valve assembly is fixedly connected to the lower end of the upper pipe, and a water cavity is provided inside the pipe sleeve, and the push valve assembly slides within the water cavity.
[0008] In a further technical solution, the actuating valve assembly includes a housing, a central fixed shaft is fixedly installed on the inner wall of the housing, a swing plate is rotatably provided on the outer side of the central fixed shaft, one end of the swing plate is rotatably connected to the housing and is provided with an end hinge, and a return spring is fixedly connected between the other end of the swing plate and the bottom inner wall of the housing.
[0009] In a further technical solution, the flow tube assembly includes a transverse connecting pipe and a bottom contact pipe. The two ends of the bottom contact pipe are fixedly connected to the transverse connecting pipe, which is respectively connected to the first shock absorber and the second shock absorber.
[0010] In a further technical solution, a heat dissipation cavity is provided inside the bottom contact tube, and the heat dissipation cavity is connected to the inside of the first shock-absorbing device and the second shock-absorbing device.
[0011] In a further technical solution, a first tube assembly is fixedly connected to the outside of the first shock absorber, and the first tube assembly has the same structure as the second tube assembly.
[0012] In a further technical solution, a first compressor and a second compressor are fixedly installed above the evaporative cooling tank, with the first compressor located on one side of the second shock absorption device.
[0013] A further technical solution is provided in which a pressure pipe is fixedly connected between the first compressor and the second compressor, the pressure pipe is connected to the first compressor, the second compressor and the interior of the evaporative cooling tank, and a power failure protection control box is installed on the outside of the evaporative cooling tank.
[0014] In a further technical solution, a pressure relief valve is also provided on the air pressure pipe.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] This utility model discloses an evaporative cooling screw compressor unit with a protective mechanism. By incorporating a first damping device and a second damping device, significant vibrations occur during operation due to the prolonged compression of the first and second compressors. These vibrations are transmitted to the evaporative cooling tank, causing it to resonate. The vibration of the evaporative cooling tank is then transmitted to the side mounting plate, which in turn transmits the vibration to the second and first damping devices. During this process, the side mounting plate undergoes downward vibration. As the side mounting plate vibrates downward, the piston plate at its bottom moves downward. The movement of the piston plate compresses the damping spring, which further compresses the liquid inside the flow chamber, causing it to flow. The flowing liquid enters the pipe sleeve. Simultaneously, the downward vibration of the evaporative cooling tank also causes the upper pipe to descend. When the upper pipe descends, the push valve assembly at its lower end activates. Due to the thrust generated by the downward movement of the upper pipe, the swing plate is pushed upward, opening the gap. At this time, the coolant inside the flow chamber expands due to compression and begins to flow towards the pipe sleeve. Because the return spring in the valve assembly is in the open position, the coolant flows smoothly into the upper pipe and then into the flow chamber. Inside the flow chamber, the newly entering coolant pushes the existing coolant, accelerating heat dissipation. The first and second damping devices effectively absorb the vibrations generated by the long-term operation of the first and second compressors, preventing damage to the evaporative cooling tank and other components and ensuring stable equipment operation. Simultaneously, the damping devices reduce noise pollution and improve the quality of the working environment. The downward vibration of the side mounting plate drives the piston plate, compressing the damping spring and squeezing the liquid inside the flow chamber. This design not only achieves energy conversion and utilization but also promotes coolant circulation. During flow, the coolant, through pushing and accelerating, enhances heat dissipation, ensuring the equipment's cooling efficiency. The coordinated work of the upper pipe and the valve assembly ensures smooth coolant flow even in vibration environments. This design not only enhances system stability but also avoids problems such as coolant leakage or blockage caused by vibration, extending the service life of the equipment. By optimizing the circulation and heat dissipation of the coolant, it reduces energy consumption and wastewater discharge, meeting the environmental protection requirements of modern industry. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0018] Figure 2 This is a front view structural diagram of this utility model.
[0019] Figure 3 This is a side view of the structure of this utility model.
[0020] Figure 4 This is a top view schematic diagram of the overall structure of this utility model.
[0021] Figure 5 This is a schematic diagram of the overall orthographic structure of this utility model.
[0022] Figure 6 This is a utility model Figure 5 A magnified schematic diagram of the structure at point A in the diagram.
[0023] Figure 7 This is a schematic diagram of the internal circuit of the power interruption protection control box 33 of this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] The components include: outer mounting cover 11, first shock absorber 12, second shock absorber 13, side mounting plate 14, evaporative cooling tank 15, first compressor 16, air pressure pipe 17, pressure relief valve 18, second compressor 19, flow pipe assembly 20, water inlet 21, water outlet 22, second pipe body assembly 23, first pipe body assembly 24, bottom contact pipe 25, transverse connecting pipe 26, connecting pipe sleeve 27, upper connecting pipe 28, flow chamber 29, shock absorber spring 30, heat dissipation chamber 31, push valve assembly 32, power failure protection control box 33, water chamber 34, housing 35, swing plate 36, middle fixed shaft 37, return spring 38, end hinge part 39, lower opening 40, flow chamber 41, and piston plate 42. Detailed Implementation
[0026] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0027] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example
[0029] As attached Figure 1 To be continued Figure 7 As shown:
[0030] This utility model provides an evaporative cooling screw compressor unit with a protective mechanism.
[0031] See attached document Figure 1 To be continued Figure 7 The system includes: an evaporative cooling tank 15, with side mounting plates 14 fixedly installed at both ends of the evaporative cooling tank 15. A first shock-absorbing device 12 and a second shock-absorbing device 13 are slidably installed below the two side mounting plates 14. An outer mounting cover 11 is fixedly connected to one end of the evaporative cooling tank 15. An inlet 21 and an outlet 22 are fixedly connected to the outer side of the outer mounting cover 11. The outer mounting cover 11 is located on one side of the first shock-absorbing device 12. The second shock-absorbing device 13 has a flow chamber 41 inside, and a piston plate 42 is slidably installed within the flow chamber 41. 2 is fixedly connected to the lower end of the side mounting plate 14. A shock-absorbing spring 30 is fixedly installed inside the flow cavity 41. A second pipe assembly 23 is fixedly connected to the outside of the second shock-absorbing device 13. The second pipe assembly 23 includes an upper pipe 28 and a pipe sleeve 27. The upper pipe 28 slides inside the pipe sleeve 27. One end of the upper pipe 28 communicates with the inside of the evaporative cooling tank 15. One end of the pipe sleeve 27 communicates with the inside of the second shock-absorbing device 13. A flow pipe assembly 20 is fixedly connected between the first shock-absorbing device 12 and the second shock-absorbing device 13.
[0032] Preferred options are shown in the appendix. Figure 4 and appendix Figure 6 The lower end of the upper pipe 28 is fixedly connected to a push valve assembly 32, and the inside of the pipe sleeve 27 is provided with a water cavity 34, and the push valve assembly 32 slides in the water cavity 34.
[0033] Preferred options are shown in the appendix. Figure 6The valve assembly 32 includes a housing 35. A central fixed shaft 37 is fixedly installed on the inner wall of the housing 35. A swing plate 36 is rotatably provided on the outer side of the central fixed shaft 37. One end of the swing plate 36 is rotatably connected to the housing 35 and is provided with an end hinge 39. A return spring 38 is fixedly connected between the other end of the swing plate 36 and the bottom inner wall of the housing 35.
[0034] Preferred options are shown in the appendix. Figure 2 The flow tube assembly 20 includes a transverse connecting pipe 26 and a bottom contact pipe 25. The bottom contact pipe 25 is fixedly connected to the transverse connecting pipe 26 at both ends. The transverse connecting pipe 26 is connected to the first shock absorber 12 and the second shock absorber 13 respectively.
[0035] Preferred options are shown in the appendix. Figure 5 The bottom contact tube 25 has a heat dissipation cavity 31 inside, and the heat dissipation cavity 31 is connected to the first shock absorber 12 and the second shock absorber 13.
[0036] Preferred options are shown in the appendix. Figure 2 and appendix Figure 5 The first shock absorber 12 is fixedly connected to a first tube assembly 24 on its outer side. The first tube assembly 24 has the same structure as the second tube assembly 23.
[0037] Preferred options are shown in the appendix. Figure 2 A first compressor 16 and a second compressor 19 are fixedly installed above the evaporative cooling tank 15, with the first compressor 16 on one side of the second shock absorption device 13.
[0038] Preferred options are shown in the appendix. Figure 2 A pressure pipe 17 is fixedly connected between the first compressor 16 and the second compressor 19. The pressure pipe 17 is connected to the first compressor 16, the second compressor 19 and the interior of the evaporative cooling tank 15. A power failure protection control box 33 is installed on the outside of the evaporative cooling tank 15.
[0039] Preferred options are shown in the appendix. Figure 2 The air pressure pipe 17 is also equipped with a pressure relief valve 18.
[0040] Specific usage method of this utility model:
[0041] First, start the screw compressor and other related equipment to ensure all equipment is in good working order. Next, check the cooling water supply to the evaporative condenser, ensuring unobstructed water flow and that the water quality meets the specified standards. Then, precisely set the required cooling temperature, humidity, and other parameters through the control system. During operation, the first compressor 16 and the second compressor 19 will generate significant vibrations due to prolonged compression work. These vibrations will be transmitted to the evaporative cooling tank 15, causing it to resonate. The vibration of the evaporative cooling tank 15 will then be transmitted to the side mounting plate 14, and the vibration of the side mounting plate 14 will be transmitted in turn to the second damping device 13 and the first damping device 12. During this process, the side mounting plate 14 will undergo downward vibration. When the side mounting plate 14 undergoes downward vibration, the piston plate 42 at its bottom will move downward accordingly. The movement of the piston plate 42 will push the damping spring 30 to compress, and the compression of the damping spring 30 will further compress the liquid inside the flow chamber 41, causing it to flow. The flowing liquid enters the inside of the connecting sleeve 27. Simultaneously, the downward vibration of the evaporative cooling tank 15 causes the upper connecting pipe 28 to sink. As the upper connecting pipe 28 sinks, the push valve assembly 32 at its lower end activates. Due to the thrust generated by the sinking of the upper connecting pipe 28, the swing plate 36 is pushed upward, opening the gap. At this time, the coolant inside the flow chamber 41 begins to flow towards the connecting sleeve 27 due to compression and expansion. Because the return spring 38 in the push valve assembly 32 is in the open state, the coolant can flow smoothly into the upper connecting pipe 28 and then into the flow chamber 29. Inside the flow chamber 29, the newly entering coolant pushes the existing coolant, accelerating heat dissipation.
[0042] Furthermore, during operation, the power failure protection control box 33 uses a security power supply with UPS and communication functions instead of a regular switching power supply as its internal power source. This power supply not only has detection functions for both AC input and DC output circuits but also has status feedback output contacts. The circuit detection feedback contacts of the UPS switching power supply are connected to the PLC's DI digital input, identifying whether the AC power supply is interrupted by the on / off status of the wiring. Once a power failure is detected, the program will quickly execute a shutdown action, immediately stopping the controlled components and completely closing the expansion valve to ensure that the battery has sufficient time to charge after power-on. The program will start timing after power-on. Although the power-on command can be accepted at this time, the power-on operation will not be executed. The operation interface will display that the unit is preheating. After sufficient power-on time, the operation interface will display that the unit is running and has entered normal control status. The system only performs protection operations by accelerating the shutdown process. Therefore, during normal operation, even if a false alarm is caused due to poor wiring contact and triggers a rapid shutdown, the impact on the unit system is relatively small. At the same time, the system can provide real-time status feedback to the host computer, achieving good monitoring and prompting effects. In contrast, ordinary units or backup power supplies specifically designed for expansion valve actuators cannot detect power outages and can only perform simple power-off reset operations. If misjudgment occurs due to poor contact or other issues, it may directly cause the expansion valve to suddenly close while other components continue to operate normally, which can easily damage the compressor. UPS switching power supplies, with a 24VDC output from the first tube assembly, are directly compatible with integrated units paired with Carel controllers and offer excellent scalability. They can also be indirectly used in systems combining Carel expansion valve actuators with any controller. Simply connect the UPS switching power supply to the Carel expansion valve actuator and connect the power feedback wiring in series with the expansion valve's start-up control circuit.
[0043] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.
Claims
1. An evaporative cooling screw chiller with a protective mechanism, comprising an evaporative cooling tank (15), characterized in that: The evaporative cooling tank (15) is fixedly mounted with side mounting plates (14) at both ends. A first damping device (12) and a second damping device (13) are slidably mounted below the two side mounting plates (14). An outer mounting cover (11) is fixedly connected to one end of the evaporative cooling tank (15). An inlet (21) and an outlet (22) are fixedly connected to the outer side of the outer mounting cover (11). The outer mounting cover (11) is located on one side of the first damping device (12). The second damping device (13) has a flow chamber (41) inside. A piston plate (42) is slidably mounted inside the flow chamber (41). The piston plate (42) is connected to the side mounting plate (14). The lower end of the mounting plate (14) is fixedly connected, and a shock-absorbing spring (30) is fixedly installed inside the flow cavity (41). A second pipe assembly (23) is fixedly connected to the outside of the second shock-absorbing device (13). The second pipe assembly (23) includes an upper pipe (28) and a pipe sleeve (27). The upper pipe (28) slides inside the pipe sleeve (27). One end of the upper pipe (28) is connected to the inside of the evaporative cooling tank (15). One end of the pipe sleeve (27) is connected to the inside of the second shock-absorbing device (13). A flow tube assembly (20) is fixedly connected between the first shock-absorbing device (12) and the second shock-absorbing device (13).
2. The evaporative cooling screw chiller unit with a protective mechanism according to claim 1, characterized in that: The lower end of the upper pipe (28) is fixedly connected to a push valve assembly (32), and the inside of the pipe sleeve (27) is provided with a water cavity (34), and the push valve assembly (32) slides in the water cavity (34).
3. The evaporative cooling screw chiller unit with a protective mechanism according to claim 2, characterized in that: The actuating valve assembly (32) includes a housing (35), a central fixed shaft (37) is fixedly installed on the inner wall of the housing (35), a swing plate (36) is rotatably provided on the outer side of the central fixed shaft (37), one end of the swing plate (36) is rotatably connected to the inner wall of the housing (35) and is provided with an end hinge (39), and the other end of the swing plate (36) is fixedly connected to the bottom inner wall of the housing (35) with a return spring (38).
4. The evaporative cooling screw chiller unit with a protective mechanism according to claim 1, characterized in that: The flow tube assembly (20) includes a transverse connecting pipe (26) and a bottom contact pipe (25). The bottom contact pipe (25) is fixedly connected to the transverse connecting pipe (26) at both ends. The transverse connecting pipe (26) is connected to the first shock absorber (12) and the second shock absorber (13) respectively.
5. An evaporative cooling screw chiller unit with a protective mechanism according to claim 4, characterized in that: The bottom contact tube (25) is provided with a heat dissipation cavity (31), which is connected to the first shock absorber (12) and the second shock absorber (13).
6. An evaporative cooling screw chiller unit with a protective mechanism according to claim 5, characterized in that: The first shock absorber (12) is fixedly connected to a first tube assembly (24), which has the same structure as the second tube assembly (23).
7. An evaporative cooling screw chiller unit with a protective mechanism according to claim 6, characterized in that: A first compressor (16) and a second compressor (19) are fixedly installed above the evaporative cooling tank (15), with the first compressor (16) on one side of the second shock absorber (13).
8. An evaporative cooling screw chiller unit with a protective mechanism according to claim 7, characterized in that: A pressure pipe (17) is fixedly connected between the first compressor (16) and the second compressor (19). The pressure pipe (17) is connected to the inside of the first compressor (16), the second compressor (19) and the evaporative cooling tank (15). A power failure protection control box (33) is installed on the outside of the evaporative cooling tank (15).
9. An evaporative cooling screw chiller unit with a protective mechanism according to claim 8, characterized in that: A pressure relief valve (18) is also fixedly installed on the air pressure pipe (17).