Floating construction type shock-absorbing scroll water source heat pump unit

Abstract

The utility model belongs to the technical field of scroll water source heat pump unit, especially a kind of floating construction type shock-absorbing scroll water source heat pump unit, including power component and bottom plate, the lower surface of power component is fixedly installed with shock-absorbing component, and the shock-absorbing component absorbs the vibration generated by power component.This floating construction type shock-absorbing scroll water source heat pump unit sets shock-absorbing device, through multidimensional vibration high-efficiency suppression, increases shock-absorbing effect, through the three-stage shock-absorbing structure of shock-absorbing component buffering vertical vibration and shock-absorbing lever absorbing horizontal, torsional vibration and shock-absorbing hose blocking pipeline vibration, improves the attenuation rate of vibration, resonance risk is greatly reduced, actively adjusts static balance through counterweight, dynamic shock-absorbing lever real-time offset vibration impact force, adjusts moment through moving counterweight, adapts to different power equipment or working condition fluctuation, without replacing core component.

Description

Technical Field

[0001] This utility model relates to the technical field of vortex water source heat pump units, and in particular to a floating vibration-damped vortex water source heat pump unit. Background Technology

[0002] The core difference between water source heat pump units and other heat pumps (such as air source and ground source) lies in the form of the low-level heat source: air source uses air as the heat source and is greatly affected by outdoor temperature; ground source (soil source) uses soil as the heat source and requires buried pipes for heat exchange; while water source heat pumps directly exchange heat with water, resulting in higher heat exchange efficiency and less impact from fluctuations in ambient temperature.

[0003] Chinese Patent No. CN218379978U discloses a water source heat pump unit with shock absorption function, including a base. Support platforms are fixed to the left and right sides of the top of the base. The water source heat pump unit body is assembled between the two support platforms. An electrical control box is fixed to the top of the water source heat pump unit body. Connecting arms are fixed to the left and right sides of the water source heat pump unit body. Balance plates are fixed to the upper and lower ends of the connecting arms. Compensation cylinders are fixed to opposite sides of the two balance plates. A support plate is fixed to the inner bottom of the support platform, and a support seat is fixed to the top of the support plate. This water source heat pump unit with shock absorption function uses two hydraulic columns, upper and lower, to act on a piston block. The piston block slides in the compensation cylinder, minimizing the compressibility of the compensation spring, ensuring a certain amount of sway while compressing the sway distance, thus preventing the spring's extensibility from increasing the amount of sway.

[0004] However, the above solutions rely solely on damping springs for vibration reduction, resulting in limited effectiveness and a high risk of resonance. The springs have a fixed natural frequency, and when the equipment's vibration frequency approaches this frequency, resonance occurs, amplifying the vibration. Furthermore, they only buffer vertical vibrations, offering poor suppression of horizontal and high-frequency vibrations. Stability is insufficient; changes in equipment weight or load alter the spring compression, potentially causing equipment tilt and affecting operational accuracy. Dynamically, the spring rebound lacks reverse constraint, leading to significant vibration amplitude. Vibration transmission is difficult to interrupt; the spring's elastic connection cannot completely isolate vibration, and some vibration may be transmitted to the ground or building structure via the base, potentially causing resonance in surrounding equipment or noise pollution. Utility Model Content

[0005] Based on the existing technical problems of limited vibration reduction effect of vortex water source heat pump units relying solely on springs, high resonance risk, insufficient stability, and difficulty in blocking vibration transmission, this utility model proposes a floating vibration-damping vortex water source heat pump unit.

[0006] The present invention proposes a floating vibration-damping vortex water source heat pump unit, which includes a power component and a base plate. A vibration damping component is fixedly installed on the lower surface of the power component, and the vibration damping component absorbs the vibration generated by the power component. The upper surface of the base plate is provided with a shock-absorbing device, which includes a shock-absorbing lever to dampen the vibration generated by the power component.

[0007] Preferably, the shock absorption assembly consists of a damper and a spring, and a connecting plate is fixedly installed on the lower surface of the shock absorption assembly.

[0008] Through the above technical solution, the combination of spring and damper can effectively absorb the vibration generated by the power component. The damper and spring are connected in parallel: the spring mainly buffers low-frequency large-amplitude vibration (such as the shock of compressor starting), while the damper suppresses high-frequency small-amplitude vibration (such as high-frequency noise vibration during operation). The two work together to improve the vibration attenuation rate.

[0009] Preferably, the shock absorption device further includes a guide rod, the top end of which is fixedly installed to the lower surface of the connecting plate, a ball head is fixedly installed on the lower surface of the guide rod, and a ball cup seat is fixedly installed at one end of the short arm of the shock absorption lever, with the outer surface of the ball head contacting the inner wall of the ball cup seat.

[0010] With the above technical solution, the ball head at the bottom of the push rod and the ball cup at the end of the short arm make spherical contact. This structure allows the push rod to swing within a small angle (to adapt to the slight tilt of the platform), while ensuring the vertical transmission of force.

[0011] Preferably, a hinge seat is fixedly installed on the upper surface of the base plate, and the outer surface of the hinge seat is rotatably connected to the outer surface of the shock-absorbing lever through a bearing.

[0012] Through the above technical solution, the double-ear ring type hinge seat and deep groove ball bearing provide stable rotational support for the shock-absorbing lever, ensuring that there is no radial movement when the lever swings, and avoiding the reduction of shock absorption effect due to unstable support.

[0013] Preferably, a sliding groove is formed on the outer surface of the long arm of the shock-absorbing lever, a counterweight is slidably sleeved on the outer surface of the long arm of the shock-absorbing lever, a ball is rotatably connected to the inner wall of the counterweight, and the outer surface of the ball is slidably connected to the inner wall of the sliding groove.

[0014] Through the above technical solution, the counterweight moves in the sliding groove via ball bearings, which facilitates the adjustment of the counterweight's position and thereby changes the natural frequency of the shock-absorbing lever, adapting to the vibration frequency of the power component under different loads and reducing the risk of resonance from the root. The cooperation between the ball bearings and the sliding groove transforms the sliding friction between the counterweight and the lever into rolling friction, significantly reducing sliding resistance, ensuring flexible adjustment of the counterweight, and avoiding wear on the lever surface.

[0015] Preferably, the upper surface of the counterweight is threaded with a locking bolt, one end of which is fixedly fitted with a locking block, and the lower surface of the locking block is in contact with the outer surface of the long arm of the shock-absorbing lever.

[0016] The above technical solution allows the locking block to contact the shock absorber lever by rotating the locking bolt. The raised texture on the lower surface of the locking block increases the friction, making it easier for the counterweight to be fixed on the long arm of the shock absorber lever.

[0017] Preferably, a shock-absorbing hose is fixedly installed at the conveying end of the power component, and one end of the shock-absorbing hose is fixedly connected to the conveying end of the conveying component of the water source heat pump unit.

[0018] Through the above technical solution, the vibration damping hose blocks the vibration transmission of the power components and the transmission pipeline, and avoids the vibration of the power components from being transmitted to other parts of the unit through the rigid pipeline, which could cause overall resonance or noise.

[0019] The beneficial effects of this utility model are as follows: By incorporating vibration damping devices, multi-dimensional vibration is efficiently suppressed, increasing the damping effect. The three-stage damping structure, which buffers vertical vibration through damping components, absorbs horizontal and torsional vibrations through damping levers, and blocks pipeline vibrations through damping hoses, improves the vibration attenuation rate and significantly reduces the risk of resonance. The active system adjusts static balance through counterweights, while the damping levers counteract vibration impact forces in real time during dynamic operation. The torque is adjusted by moving the counterweights, adapting to different power equipment or operating condition fluctuations. No core components need to be replaced. This solves the technical problems of existing vortex water source heat pump units, which have limited vibration damping effect due to relying solely on springs, high resonance risk, insufficient stability, and difficulty in blocking vibration transmission. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a floating vibration-damping vortex-type water source heat pump unit proposed in this utility model. Figure 2 A perspective view of the connecting plate structure of a floating vibration-damping vortex water source heat pump unit proposed in this utility model. Figure 3 This is a perspective view of the vibration damping component structure of a floating vibration damping vortex water source heat pump unit proposed in this utility model. Figure 4A perspective view of the guide rod structure of a floating vibration-damping vortex-type water source heat pump unit proposed in this utility model; Figure 5 A perspective view of the shock-absorbing lever structure of a floating shock-absorbing vortex-type water source heat pump unit proposed in this utility model; Figure 6 This is a perspective view of the locking block structure of a floating vibration-damping vortex-type water source heat pump unit proposed in this utility model.

[0021] In the diagram: 1. Power component; 11. Base plate; 2. Shock absorption assembly; 21. Connecting plate; 3. Guide rod; 31. Ball head; 32. Ball cup seat; 33. Shock absorption lever; 34. Hinge seat; 4. Sliding groove; 41. Counterweight; 42. Ball bearing; 43. Locking bolt; 44. Locking block; 5. Shock absorption hose. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-6 A floating vibration-damping scroll-type water source heat pump unit includes a power component 1 and a base plate 11. The power component 1 is a scroll compressor. 4-6 sets of evenly distributed vibration damping components 2 (symmetrically arranged along the edge contour of the power component 1) are fixedly installed on the lower surface of the power component 1 by M16-M20 high-strength bolts. The vibration damping components 2 absorb the 10-200Hz vibration generated by the power component 1 during operation in stages.

[0024] Specifically, the shock absorber 2 is composed of a hydraulic damper and a helical spring connected in parallel. The hydraulic damper is adjustable, with a damping coefficient of 500-2000 N·s / m, a working stroke of 20-50 mm, and a temperature resistance of -30℃ to 100℃. The helical spring is made of 60Si2Mn high-strength carbon steel, with an elastic coefficient of 100-500 N / mm, a free height of 80-150 mm, and a galvanized surface for rust prevention. A connecting plate 21 is fixedly installed on the lower surface of the shock absorber 2 by a full welding process. The full welding process requires a weld height of ≥8 mm, and post-weld flaw detection shows no pores or cracks. The connecting plate 21 is made of 304 stainless steel with a thickness of 8-12 mm. The connecting plate 21 has 6-8 evenly distributed connecting holes with a diameter of M12-M16 and a hole position tolerance of ±0.1 mm, which are used for fixed connection with the guide rod 3.

[0025] The upper surface of the base plate 11 is also equipped with 2-4 sets of shock absorption devices. The shock absorption devices include horizontally arranged shock absorption levers 33 with a short arm to long arm length ratio of 1:2-1:3. The shock absorption levers 33 convert the vibration energy of the power component 1 into its own swing kinetic energy through the lever principle, and perform composite shock absorption on vertical, horizontal and torsional vibrations. The base plate 11 is made of Q235B steel plate in one piece with a thickness of 10-20mm and a flatness of ≤0.5mm / m. The bottom edge of the base plate 11 is pasted with 5-8mm thick nitrile rubber anti-slip pads.

[0026] Specifically, the shock absorption device also includes a cylindrical guide rod 3, which is made of 45# quenched and tempered steel. Its top end is fixed to the connecting hole on the connecting plate 21. A ball head 31 is fixedly installed on the lower surface of the guide rod 3 by M16-M20 threaded connection. After tightening, it is reinforced by spot welding to prevent loosening. The ball head 31 is made of GCr15 bearing steel. One end of the short arm of the shock absorption lever 33 is fixedly installed with a ball cup seat 32 by M8-M10 bolts. The bolt head uses a combination of flat washers and spring washers to prevent loosening. The inner wall of the ball cup seat 32 has an arc shape that perfectly matches the spherical curvature of the ball head 31. The groove has a depth of 1 / 3 to 1 / 2 of the diameter of the ball head 31, ensuring that the ball head 31 can achieve adaptive rotation of a small angle within a range of ±3° within the groove. The inner wall of the arc-shaped groove of the ball cup seat 32 is also provided with an annular grease groove, with a groove width of 3-5mm and a groove depth of 1-2mm, containing lithium-based grease of model GB / T7324-2010, with a temperature resistance of -20℃ to 120℃. The fit clearance between the outer surface of the ball head 31 and the inner wall of the ball cup seat 32 is strictly controlled within 0.1-0.3mm, and the clearance is evenly distributed along the spherical surface without any local jamming points.

[0027] Specifically, a hinge seat 34 is fixedly installed on the upper surface of the base plate 11 by welding. The hinge seat 34 is a double-ear ring structure made of Q345 steel. The outer surface of the hinge seat 34 is rotatably connected to the outer surface of the shock absorber lever 33 through a deep groove ball bearing. The deep groove ball bearing is model 6206-2Z, with a rated dynamic load ≥25.5kN and a rated static load ≥15.2kN. The sealing form is a double-sided dust cover. The outer ring of the bearing is interference-fitted with the inner hole of the ear ring of the hinge seat 34 with a fit tolerance of H7 / p6. The inner ring of the bearing is transition-fitted with the bearing seat of the shock absorber lever 33 with a fit tolerance of H7 / g6. The rotation angle range of the shock absorber lever 33 around the hinge seat 34 is ±15°, and the rotation resistance torque is ≤5N・m.

[0028] Specifically, the shock absorber lever 33 is made of 40CrNiMoA high-strength alloy steel; the outer surface of the long arm of the shock absorber lever 33 is provided with a sliding groove 4, and a counterweight 41 is slidably sleeved on the outer surface of the long arm of the shock absorber lever 33. The counterweight 41 is made of cast iron or lead alloy and weighs 5-15kg. It can be replaced or added according to the load of the power component 1. The inner wall of the counterweight 41 is rotatably connected to 4-6 sets of balls 42 through the ball bearing seat. The balls 42 are made of GCr15 and have a surface hardness of HRC60-64. The outer surface of the balls 42 is slidably connected to the inner wall of the sliding groove 4, and the sliding friction coefficient is ≤0.05.

[0029] Specifically, the upper surface of the counterweight 41 is threaded with a locking bolt 43 in the vertical direction, which is made of 304 stainless steel; one end of the locking bolt 43 is fixedly installed with a locking block 44 by welding, and the lower surface of the locking block 44 is provided with raised grooves; the lower surface of the locking block 44 is in close contact with the outer surface of the long arm of the shock absorber lever 33, and the preload of the locking bolt 43 and the raised grooves increase the friction to fix the counterweight 41 on the shock absorber lever 33.

[0030] Specifically, the medium conveying end (refrigerant / water inlet) of power component 1 is fixedly installed with a shock-absorbing hose 5 via a PN1.6MPa flange. The shock-absorbing hose 5 is a high-pressure resistant composite structure, with an inner layer of nitrile rubber, which is oil and refrigerant resistant; a middle layer of polyester fiber reinforcement, with 2-4 layers to enhance compressive strength; an outer layer of neoprene rubber, which is anti-aging; an inner extrusion molding; a middle fiber winding reinforcement; and an outer composite coating. The working pressure is ≥1.6MPa, the temperature range is -20℃ to 120℃, and the bending radius is ≥10 times the nominal diameter. One end of the shock-absorbing hose 5 is fixedly connected to the conveying component pipeline of the water source heat pump unit via a flange. The conveying component includes a heat exchanger.

[0031] By setting up a vibration damping device, the vibration damping effect is increased through multi-dimensional vibration suppression. The three-stage vibration damping structure, which buffers vertical vibration through the vibration damping component 2, absorbs horizontal and torsional vibration through the vibration damping lever 33, and blocks pipeline vibration through the vibration damping hose 5, improves the vibration attenuation rate and significantly reduces the risk of resonance. The static balance is actively adjusted by the counterweight 41, and the vibration damping lever 33 offsets the vibration impact force in real time during dynamic operation. The torque is adjusted by moving the counterweight 41, which can adapt to different power equipment or operating condition fluctuations. There is no need to replace the core components. This solves the technical problems of the existing vortex water source heat pump unit, which has limited vibration damping effect, high resonance risk, insufficient stability, and difficulty in blocking vibration transmission, which rely solely on springs for vibration damping.

[0032] Working principle: When the power component 1 is running, the vibration generated is absorbed by the damper and spring in the shock absorption assembly 2. At the same time, the vibration generated by the connecting plate 21 drives the guide rod 3 to descend. The guide rod 3 drives the ball head 31 to descend, which pushes the shock absorption lever 33 to deflect in the hinge seat 34 through the ball cup seat 32. When the short arm of the shock absorption lever 33 is subjected to downward pressure, the counterweight 41 will resist the upward movement of the horizontal arm due to inertia, generating a downward inertial force that drives the shock absorption lever 33 to deflect. When the pressure on the short arm decreases, the counterweight 41 moves downward due to gravity and inertia, causing the horizontal arm to swing downward and driving the shock absorption lever 33 to deflect in the opposite direction, thus achieving dynamic balance.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A floating, vibration-damping vortex-type water source heat pump unit, comprising a power unit (1) and a base plate (11), characterized in that: A shock-absorbing component (2) is fixedly installed on the lower surface of the power component (1), and the shock-absorbing component (2) absorbs the vibration generated by the power component (1). The upper surface of the base plate (11) is provided with a shock-absorbing device, which includes a shock-absorbing lever (33) to dampen the vibration generated by the power component (1).

2. The floating vibration-damping vortex-type water source heat pump unit according to claim 1, characterized in that: The shock absorber assembly (2) is composed of a damper and a spring, and a connecting plate (21) is fixedly installed on the lower surface of the shock absorber assembly (2).

3. The floating vibration-damping vortex-type water source heat pump unit according to claim 2, characterized in that: The shock-absorbing device also includes a guide rod (3), the top end of which is fixedly installed on the lower surface of the connecting plate (21), a ball head (31) is fixedly installed on the lower surface of the guide rod (3), and a ball cup seat (32) is fixedly installed at one end of the short arm of the shock-absorbing lever (33), with the outer surface of the ball head (31) in contact with the inner wall of the ball cup seat (32).

4. The floating vibration-damping vortex-type water source heat pump unit according to claim 1, characterized in that: A hinge seat (34) is fixedly installed on the upper surface of the base plate (11), and the outer surface of the hinge seat (34) is rotatably connected to the outer surface of the shock-absorbing lever (33) through a bearing.

5. A floating, vibration-damping vortex-type water source heat pump unit according to claim 1, characterized in that: The outer surface of the long arm of the shock-absorbing lever (33) is provided with a sliding groove (4), and a counterweight (41) is slidably sleeved on the outer surface of the long arm of the shock-absorbing lever (33). A ball (42) is rotatably connected to the inner wall of the counterweight (41), and the outer surface of the ball (42) is slidably connected to the inner wall of the sliding groove (4).

6. A floating vibration-damping vortex-type water source heat pump unit according to claim 5, characterized in that: The upper surface of the counterweight (41) is threaded with a locking bolt (43), and a locking block (44) is fixedly installed at one end of the locking bolt (43). The lower surface of the locking block (44) is in contact with the outer surface of the long arm of the shock-absorbing lever (33).

7. A floating vibration-damping vortex-type water source heat pump unit according to claim 1, characterized in that: The power component (1) is fixedly equipped with a shock-absorbing hose (5) at the conveying end, and one end of the shock-absorbing hose (5) is fixedly connected to the conveying end of the water source heat pump unit.

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