A shock-absorbing base of an air-cooled screw water chiller

Abstract

The utility model discloses an air -cooled screw rod water chiller's shock attenuation base, including base, the upper side of inside the base is slidably connected with the support plate, still include shock attenuation mechanism, shock attenuation mechanism includes shock absorber no.

Description

Technical Field

[0001] This utility model relates to the technical field of air-cooled screw chiller units, specifically a shock-absorbing base for an air-cooled screw chiller unit. Background Technology

[0002] An air-cooled screw chiller is a central air conditioning unit that uses air as a cooling medium and is powered by a screw compressor to produce chilled water for large buildings or industrial processes. Its core function is to produce chilled water, which is then pumped and piped to various areas of the building. In the air conditioning terminal units, it absorbs heat to cool the space. The "screw" designation refers to the type of compressor, its core component. Inside the screw compressor is a pair of meshing helical rotors that rotate to compress the refrigerant. This type of compressor is known for its high energy efficiency, stable operation, and long lifespan, making it particularly suitable for medium to large cooling capacity applications.

[0003] Air cooling refers to its heat dissipation method. The unit uses its own fan to force in ambient air, which then flows through a heat exchanger called a condenser to carry away the heat from the refrigerant. This is completely different from water-cooled units, which require a cooling tower and water pump. The vibration damping base of an air-cooled screw chiller is a specially designed and manufactured structural support device installed between the bottom of the unit and the building foundation. Its core function is to isolate or significantly reduce the vibration and noise generated by the chiller during operation, preventing them from being transmitted to the building structure.

[0004] The existing vibration damping base for air-cooled screw chillers uses an integral support structure for the base frame. When the unit operates, the vertical vibrations push the support plate down. The spring of the composite vibration isolator absorbs most of the vertical vibration energy through elastic deformation, while the rubber assists in dissipating some energy. When the unit generates horizontal vibrations, the support rod is stressed and the force is transmitted to the horizontal spring. The horizontal spring absorbs the horizontal vibration energy through elastic deformation. Then, through the cooperation of the vertical composite vibration isolator, the horizontal support rod, and the spring, the vertical and horizontal vibrations of the unit are attenuated respectively, achieving dual-dimensional passive vibration damping.

[0005] The existing vibration damping bases for air-cooled screw chillers have the following problems: When damping air-cooled screw chillers, only composite vibration isolators are used for vibration damping. A small amount of energy is dissipated through internal friction, which is a single path. After long-term use, the internal friction capacity decreases, resulting in a gradual decrease in vertical vibration damping effect. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the existing defects and provide a vibration damping base for an air-cooled screw chiller unit. When the air-cooled screw chiller unit is subjected to vibration damping, the vibration force is dissipated through multiple paths by absorbing, converting and damping in a coordinated manner, thereby achieving higher vibration damping efficiency and reducing the vibration effect in a slower time. This can effectively solve the problems in the background technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a shock-absorbing base for an air-cooled screw chiller unit, comprising a base, a support plate slidably connected to the upper side inside the base, and a shock-absorbing mechanism; The shock absorption mechanism includes shock absorber one, sliding groove, sliding block, U-shaped block, U-shaped seat, support rod, and shock absorber two. Shock absorber one is fixedly connected between the bottom wall of the base and the top wall of the support plate. The bottom wall of the base is provided with a sliding groove that is evenly distributed. Sliding blocks that are symmetrically arranged front and rear are slidably connected inside the sliding groove. U-shaped blocks are fixedly connected to the opposite ends of the sliding blocks. U-shaped seats are provided with a sliding groove that is evenly distributed on the top wall of the support plate. Support rods are rotatably connected between the U-shaped blocks and the vertically adjacent U-shaped seats through pins. Shock absorber two is fixedly connected between the inner wall of the sliding groove and the opposite ends of the longitudinally adjacent sliding blocks.

[0008] Furthermore, the shock absorption mechanism also includes an auxiliary shock absorption component, which includes a support rod, a piston, and an air cylinder. The bottom wall of the base is provided with evenly distributed air cylinders, and pistons are slidably connected inside the air cylinders. The upper ends of the pistons are fixedly connected to the support rods, and the upper ends of the support rods are fixedly connected to the top wall of the support plate to achieve auxiliary shock absorption.

[0009] Furthermore, the auxiliary shock absorption assembly also includes an exhaust port and an air pipe. An exhaust port is provided on the lower side of the outer surface of the air cylinder, and an air pipe is provided at the air inlet on the lower side of the outer surface of the air cylinder to facilitate air intake and exhaust.

[0010] Furthermore, the auxiliary shock absorption assembly also includes a one-way valve, and one-way valves are connected in series on the side of the air pipe away from the center of the base to facilitate air intake.

[0011] Furthermore, the auxiliary shock absorption assembly also includes telescopic rods and springs. The lower end of the piston is fixedly connected to the bottom wall of the vertically adjacent air cylinder, and springs are respectively sleeved on the outside of the telescopic rods to provide cushioning.

[0012] Furthermore, the upper end of the support plate is provided with symmetrical mounting strips for easy installation.

[0013] Furthermore, all pistons are aluminum alloy pistons, providing thrust.

[0014] Compared with the prior art, the beneficial effects of this utility model are: The shock absorber absorbs vertical vibration energy directly through its own elastic deformation. The support plate forms a triangular stable linkage structure through U-shaped blocks, U-shaped seats, and support rods. When the support plate moves downward, the U-shaped seats open the sliding blocks on both sides through the U-shaped blocks and support rods. The horizontal sliding of the sliding blocks directly causes the shock absorber to undergo elastic deformation, simultaneously absorbing the horizontal displacement energy converted from vertical vibration and the horizontal vibration energy, thus achieving horizontal vibration attenuation. When the support plate moves downward, the piston is pushed downward in the air cylinder by the support rod. The piston compresses the gas, the telescopic rod, and the spring. The spring undergoes elastic deformation, directly absorbing part of the vertical vibration energy and forming an elastic buffer. As the piston moves downward, it compresses the air, increasing the air pressure on the lower side of the piston inside the air cylinder. The air inside the air cylinder will slowly be discharged from the exhaust port, which can efficiently absorb vibration energy. When damping the air-cooled screw chiller unit, the absorption, conversion, and damping work together to dissipate the vibration force through multiple paths, achieving higher damping efficiency and a slower reduction in damping effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a partially enlarged structural schematic diagram of the present invention.

[0016] In the diagram: 1. Base, 2. Support plate, 3. Shock absorption mechanism, 31. Shock absorber one, 32. Sliding groove, 33. Sliding block, 34. U-shaped block, 35. U-shaped seat, 36. Support rod, 37. Shock absorber two, 38. Auxiliary shock absorption assembly, 381. Support rod, 382. Piston, 383. Telescopic rod, 384. Spring, 385. Exhaust hole, 386. Air cylinder, 387. Air pipe, 388. One-way valve, 4. Mounting strip. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-3 This embodiment provides a technical solution: a shock-absorbing base for an air-cooled screw chiller unit, including a base 1, a support plate 2 slidably connected to the upper side inside the base 1, and a shock-absorbing mechanism 3. The upper end of the support plate 2 is provided with left and right symmetrical mounting strips 4.

[0019] The shock absorption mechanism 3 includes a shock absorber 31, a sliding groove 32, a sliding block 33, a U-shaped block 34, a U-shaped seat 35, a support rod 36, a second shock absorber 37, and an auxiliary shock absorption assembly 38. The bottom wall of the base 1 and the top wall of the support plate 2 are fixedly connected with evenly distributed shock absorbers 31. The bottom wall of the base 1 is provided with evenly distributed sliding grooves 32. The sliding grooves 32 are slidably connected with front and rear symmetrical sliding blocks 33. The opposite ends of the sliding blocks 33 are fixedly connected with U-shaped blocks 34. The top wall of the support plate 2 is provided with evenly distributed U-shaped seats 35. The U-shaped blocks 34 and the vertically adjacent U-shaped seats 35 are rotatably connected with support rods 36 through pins. The inner wall of the sliding groove 32 and the opposite ends of the longitudinally adjacent sliding blocks 33 are fixedly connected with shock absorbers 37.

[0020] The auxiliary shock absorption assembly 38 includes support rods 381, pistons 382, ​​and air cylinders 386. The bottom wall of the base 1 is provided with evenly distributed air cylinders 386. Pistons 382 are slidably connected inside each air cylinder 386. Support rods 381 are fixedly connected to the upper ends of the pistons 382. The upper ends of the support rods 381 are fixedly connected to the top wall of the support plate 2. The auxiliary shock absorption assembly 38 also includes exhaust holes 385 and air pipes 387. Exhaust holes 385 are opened on the lower side of the outer surface of each air cylinder 386, and air pipes 387 are opened at the air inlets on the lower side of the outer surface of each air cylinder 386. The auxiliary shock absorption assembly 38 also includes one-way valves 388, with one-way valves 388 connected in series on the side of each air pipe 387 away from the center of the base 1. The auxiliary shock absorption assembly 38 also includes telescopic rods 383 and springs 384. Telescopic rods 383 are fixedly connected between the lower end of the pistons 382 and the bottom walls of the vertically adjacent air cylinders 386. Springs 384 are respectively fitted on the outside of rod 383 (the upper ends of U-shaped seat 35 and shock absorber 31 are bolted to the top wall of support plate 2, telescopic rod 383 is threaded to the lower end of piston 382, ​​piston 382 is nutted to the lower end of support rod 381, spring 384 will lose elasticity after long-term use and needs to be replaced regularly to maintain the elasticity of spring 384. When spring 384 needs to be replaced, first unscrew all bolts to remove support plate 2, then unscrew nuts to separate piston 382 from support rod 381, then unscrew piston 382 from the upper end of telescopic rod 383, then replace spring 384, after replacement screw piston 382 back on, then connect piston 382 to support rod 381 with nuts, and then reinstall support plate 2 with bolts). Piston 382 is an aluminum alloy piston.

[0021] The working principle of this utility model is as follows: When damping the air-cooled screw chiller unit, the air-cooled screw chiller unit is fixed to the mounting strip 4 by bolts. The mounting strip 4 is symmetrically distributed on the upper end of the support plate 2. When the air-cooled screw chiller unit is running, the vertical vibration generated by the rotation of the screw and the work of the compressor will be directly transmitted to the support plate 2. When the support plate 2 receives the vibration of the unit and moves downward, the shock absorber 31 is evenly distributed between the bottom wall of the base 1 and the top wall of the support plate 2. When the support plate 2 moves downward, the shock absorber 31 is compressed and directly absorbs the vertical vibration energy through its own elastic deformation. At the same time, it provides basic support force for the support plate 2 and prevents it from sinking excessively. The top wall of the support plate 2 is provided with a U-shaped seat 35, and the sliding groove 32 of the bottom wall of the base 1 is provided with a sliding block 33. The upper end of the sliding block is fixed with a U-shaped block 34. The support rod 36 is rotatably connected to the U-shaped block 34 and the U-shaped seat 35 through a pin, forming a triangular stable linkage structure. When the support plate 2 moves downward, the U-shaped seat 35 moves downward accordingly, pushing the support rod 36 to rotate around the pin and opening the sliding blocks 33 on both sides. The sliding block 33 slides horizontally in the sliding groove 32 in a direction away from the center of the base 1. The second shock absorber 37 is fixed between the inner wall of the sliding groove 32 and the opposite end of the sliding block 33. When the sliding block 33 slides to both sides, it squeezes the second shock absorber 37. The horizontal sliding of the sliding block 33 directly causes the second shock absorber 37 to produce elastic deformation, which absorbs the horizontal displacement energy converted from vertical vibration and the original horizontal vibration energy of the air-cooled screw chiller unit simultaneously, realizing the vibration attenuation in the horizontal direction, and further weakening the residual wave of vertical vibration. When the support plate 2 moves downward, it pushes the piston 382 to slide downward in the air cylinder 386 via the support rod 381. During the downward movement of the piston 382, ​​the piston 382 compresses the gas at the bottom of the air cylinder 386, along with the telescopic rod 383 and the spring 384. The spring 384 undergoes elastic deformation, directly absorbing part of the vertical vibration energy and forming an elastic buffer. As the piston 382 moves downward, it compresses the air inside the air cylinder 386, increasing the air pressure below the piston 382 inside the air cylinder 386. The air inside the air cylinder 386 will then slowly be discharged from the exhaust port 385, achieving efficient suction. When the support plate 2 moves upward, the support rod 381 drives the piston 382 to slide upward inside the air cylinder 386. The air pressure inside the air cylinder 386 below the piston 382 decreases, and the one-way valve 388 on the air pipe 387 automatically opens due to the negative pressure, allowing only gas to enter and not allowing it to flow out. Outside air quickly enters the air cylinder 386, filling the negative pressure space, slowing down the reset speed of the support plate 2, and preventing it from rebounding rapidly due to the excessive elasticity of the spring 384, thus preventing secondary vibration. This effectively suppresses the risk of resonance and improves the overall vibration reduction effect.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vibration damping base for an air-cooled screw chiller unit, comprising a base (1), wherein a support plate (2) is slidably connected to the upper side inside the base (1), characterized in that: It also includes a shock absorption mechanism (3); The shock absorption mechanism (3) includes shock absorber one (31), sliding groove (32), sliding block (33), U-shaped block (34), U-shaped seat (35), support rod (36) and shock absorber two (37). The bottom wall of the base (1) and the top wall of the support plate (2) are fixedly connected with the shock absorber one (31) evenly distributed. The bottom wall of the base (1) is provided with a sliding groove (32) evenly distributed. The sliding groove (32) is slidably connected with sliding blocks (33) symmetrically arranged. The opposite ends of the sliding blocks (33) are fixedly connected with U-shaped blocks (34). The top wall of the support plate (2) is provided with a U-shaped seat (35) evenly distributed. The U-shaped block (34) and the vertically adjacent U-shaped seat (35) are respectively rotatably connected with the support rod (36) through a pin shaft. The inner wall of the sliding groove (32) and the opposite ends of the longitudinally adjacent sliding blocks (33) are respectively fixedly connected with the shock absorber two (37).

2. The vibration damping base of an air-cooled screw chiller unit according to claim 1, characterized in that: The shock absorption mechanism (3) also includes an auxiliary shock absorption component (38), which includes a support rod (381), a piston (382) and an air cylinder (386). The bottom wall of the base (1) is provided with evenly distributed air cylinders (386). The pistons (382) are slidably connected inside the air cylinders (386). The upper ends of the pistons (382) are fixedly connected to the support rods (381). The upper ends of the support rods (381) are all fixedly connected to the top wall of the support plate (2).

3. The vibration damping base of an air-cooled screw chiller unit according to claim 2, characterized in that: The auxiliary shock absorption assembly (38) also includes an exhaust port (385) and an air pipe (387). An exhaust port (385) is provided on the lower side of the outer surface of the air cylinder (386), and an air pipe (387) is provided at the air inlet on the lower side of the outer surface of the air cylinder (386).

4. The vibration damping base of an air-cooled screw chiller unit according to claim 3, characterized in that: The auxiliary shock absorption assembly (38) also includes a one-way valve (388), and the air pipe (387) is connected in series with a one-way valve (388) on the side away from the center of the base (1).

5. The vibration damping base of an air-cooled screw chiller unit according to claim 4, characterized in that: The auxiliary shock absorption assembly (38) also includes a telescopic rod (383) and a spring (384). The lower end of the piston (382) is fixedly connected to the bottom wall of the vertically adjacent air cylinder (386) with a telescopic rod (383). The telescopic rod (384) is sleeved on the outside of the telescopic rod (383).

6. The vibration damping base of an air-cooled screw chiller unit according to claim 1, characterized in that: The upper end of the support plate (2) is provided with symmetrical mounting strips (4).

7. The vibration damping base of an air-cooled screw chiller unit according to claim 2, characterized in that: All pistons (382) are aluminum alloy pistons.

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