An electronic expansion valve with shock absorption effect

Abstract

The present invention discloses an electronic expansion valve with a shock-absorbing effect, which belongs to the technical field of electronic expansion valves, comprising an electronic expansion valve assembly, including a valve body and a water inlet pipe connected therethrough, wherein a valve core member, an adjusting spring and an adjusting screw which abut against each other are arranged in an inner cavity of the valve body; a shock-absorbing auxiliary clamping mechanism, comprising a shock-absorbing sleeve interference-fitted on the circumference of the valve body and two shock-absorbing extension arms symmetrically arranged on the outer wall of the circumference of the shock-absorbing sleeve, micro-buffer dampers are embedded in the opposite ends of the inner cavities of the two shock-absorbing extension arms, and the two micro-buffer dampers are buffer-connected to a shock-absorbing transmission buffer rod which passes through the shock-absorbing sleeve and extends into the inner cavity of the valve body at the opposite ends; an auxiliary shock-absorbing elastic plastic plate is fixed to one end of the shock-absorbing transmission buffer rod in the inner cavity of the valve body, and comprises an elastic shock-absorbing upper part, an elastic shock-absorbing middle part and an elastic shock-absorbing lower part of the dynamic contact adjusting spring; the auxiliary shock-absorbing elastic plastic plate has a corrugated structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic expansion valves, in particular to an electronic expansion valve with a shock-absorbing effect. Background Art

[0002] The electronic expansion valve is a crucial component in refrigeration systems, typically installed between the liquid reservoir and the evaporator. The expansion valve throttles medium-temperature, high-pressure liquid refrigerant through its throttling mechanism, converting it into low-temperature, low-pressure wet vapor. The refrigerant then absorbs heat in the evaporator, achieving the desired cooling effect. The expansion valve controls flow by adjusting the superheat at the end of the evaporator, preventing underutilization of the evaporator area and cylinder knocking.

[0003] Currently, electronic expansion valves in large industrial refrigeration systems, vehicle air-conditioning systems or special environments (such as ships and mining vehicles) will generate certain mechanical vibrations or transient shocks during use, especially when starting, stopping, changing loads or vibrating in the external environment. These vibrations or shocks will be transmitted to the inside of the expansion valve, causing additional stress on the regulating spring or causing it to move unexpectedly. However, existing electronic expansion valves generally do not have a structure for directly buffering and shock absorbing the regulating spring, which reduces the service life of the regulating spring and the electronic expansion valve.

[0004] After searching, the existing Chinese patent publication number is: CN216742603U, an expansion valve shock-absorbing structure, including an expansion valve body, the outer surface of the expansion valve body is connected to pipe one, the outer surface of the expansion valve body is connected to pipe two, the outer surface of the expansion valve body is connected to pipe three, the outer surface of the expansion valve body is connected to pipe four, the outer surface of the expansion valve body is provided with a fixing mechanism, the outer surface of the expansion valve body is provided with a sliding mechanism, and two buffer mechanisms are provided below the expansion valve body.

[0005] The cited patent document also has the same problem. Vibration or impact will be transmitted to the inside of the expansion valve, causing additional stress on the adjusting spring or causing it to move unexpectedly. However, the electronic expansion valve does not have a structure inside to directly buffer and shock the adjusting spring, which reduces the service life of the adjusting spring and the electronic expansion valve. Summary of the Invention

[0006] The object of the present invention is to provide an electronic expansion valve with a shock-absorbing effect to solve the problems raised in the background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an electronic expansion valve with a shock-absorbing effect, comprising:

[0008] The electronic expansion valve assembly includes a valve body and a water inlet pipe connected therethrough. The inner cavity of the valve body is provided with a valve core member, an adjusting spring, and an adjusting screw that abut against each other.

[0009] The shock-absorbing auxiliary clamping mechanism includes a shock-absorbing sleeve that is interference-fitted on the circumference of the valve body and two shock-absorbing extension arms symmetrically arranged on the outer wall of the circumference of the shock-absorbing sleeve. The two shock-absorbing extension arms have micro-buffer dampers embedded in the opposite ends of the inner cavities. The two micro-buffer dampers are buffer-connected to the opposite ends of the two micro-buffer dampers with shock-absorbing transmission buffer rods that penetrate the shock-absorbing sleeve and extend into the inner cavity of the valve body.

[0010] The auxiliary shock-absorbing elastic plastic plate is fixed to one end of the shock-absorbing transmission buffer rod in the inner cavity of the valve body and includes an elastic shock-absorbing upper portion, an elastic shock-absorbing middle portion and an elastic shock-absorbing lower portion of the dynamic contact adjustment spring;

[0011] Wherein, the auxiliary shock-absorbing elastic plastic plate has a corrugated structure.

[0012] Preferably, compression springs are sleeved around the damping rods of the two miniature buffer dampers, and a first connecting plate is fixed to the free end of each damping rod;

[0013] A second connecting disk is fixed to the tail end of the shock-absorbing transmission buffer rod and is installed together with the first connecting disk.

[0014] Preferably, in this solution, a buffer air bag is provided in the buffer inner cavity of the second connecting disk, and the buffer air bag elastically abuts against the outer wall of the first connecting disk.

[0015] In this solution, a liquid storage buffer annular groove is preferably provided inside the shock-absorbing sleeve, a buffer liquid is stored in the lower part of the liquid storage buffer annular groove, and a rubber buffer ring gasket is sealed and connected to the liquid storage buffer annular groove above the buffer liquid.

[0016] Preferably, the inner wall of the shock-absorbing sleeve is symmetrically and laterally provided with a through hole for the shock-absorbing transmission buffer rod to pass through, and the through hole passes through the liquid storage buffer annular groove and extends to the outside of the shock-absorbing sleeve;

[0017] The outer wall of the shock-absorbing sleeve passes through a water pipe opening with a safety plug.

[0018] Preferably, a T-shaped sealing sleeve is interference-fitted in each through hole, the convex end of the T-shaped sealing sleeve abuts against the inner wall of the shock-absorbing sleeve, and the sleeve end of the T-shaped sealing sleeve passes through the liquid storage buffer annular groove and extends to the outside of the shock-absorbing sleeve;

[0019] The shock-absorbing transmission buffer rod is loosely fitted in the inner cavity of the T-shaped sealing sleeve.

[0020] Preferably, in this solution, one end of the two elastic shock-absorbing upper parts away from the elastic shock-absorbing middle part extends in a centripetal arc trajectory and dynamically abuts against the adjustment spring.

[0021] Preferably, in this solution, the end portion of the elastic shock-absorbing portion that is wavy and protrudes centripetally is in sliding friction contact with the outer wall of the adjusting spring.

[0022] In this solution, preferably, one end of the elastic shock-absorbing lower portion away from the elastic shock-absorbing middle portion extends in a centripetal arc trajectory to receive the impact of the medium and buffer the subsequent fluctuations.

[0023] Preferably, the bottom surfaces of the two shock-absorbing extension arms are fixedly connected to a bent buffer support frame plate, and the top surfaces of the top bent plates of the two bent buffer support frames are bonded with rubber shock-absorbing pads;

[0024] The top bent plate is connected to the shock-absorbing extension arm via bolts;

[0025] The bottom bent plates of the two bent buffer support plates are arranged centripetally.

[0026] Compared with the prior art, the technical effects and advantages of the present invention are:

[0027] This electronic expansion valve with shock-absorbing effect:

[0028] (1) Two shock-absorbing transmission buffer rods drive the auxiliary shock-absorbing elastic plastic plate to be clamped centripetally on both sides of the adjusting spring in the valve body. When the adjusting spring vibrates, the vibration is transmitted to the auxiliary shock-absorbing elastic plastic plate, and the recoil vibration of the shock-absorbing transmission buffer rod is damped and buffered by the micro-buffer damper;

[0029] (2) The upper end of the elastic shock absorber, which is away from the middle part of the elastic shock absorber, extends in a centripetal arc trajectory and dynamically abuts against the adjustment spring. The end of the middle part of the elastic shock absorber, which is corrugated and centripetally protruding, is in sliding friction contact with the outer wall of the adjustment spring. The lower end of the elastic shock absorber, which is away from the middle part of the elastic shock absorber, extends in a centripetal arc trajectory to absorb the impact of the medium and the subsequent fluctuation buffering. The auxiliary shock-absorbing elastic plastic plate has a corrugated structure or a wave shape that can form a continuous and uniform contact surface with the adjustment spring. Compared with a single plane or a simple arc surface, this design can more effectively disperse the vibration energy of the adjustment spring. The peaks and troughs of the waves alternately contact the adjustment spring, so that the vibration energy is dispersed and absorbed at multiple contact points, which helps to improve the shock absorption effect.

[0030] (3) The corrugated structure or the complex wave-like geometric structure of the auxiliary shock-absorbing elastic plastic plate helps to change the acoustic characteristics of the regulating spring vibration. Through interference and scattering effects, the vibration noise caused by the extension and compression of the regulating spring within a specific frequency range can be reduced, which helps to improve the overall acoustic performance of the electronic expansion valve, thereby achieving the effect of reducing noise and improving the use efficiency and user experience;

[0031] (4) The centripetally clamped auxiliary shock-absorbing elastic plastic plate can not only absorb vibration energy, but also protect both sides of the regulating spring from direct impact or wear. The auxiliary shock-absorbing elastic plastic plate can serve as the first line of defense, absorbing and dispersing external impact force, reducing direct damage to the regulating spring, and extending the service life of the regulating spring and the electronic expansion valve;

[0032] (5) Water is stored in the lower part of the liquid storage buffer annular groove, and a rubber buffer ring gasket is sealed above the water. When the vibration generated by the adjustment spring is transmitted to the shock-absorbing sleeve, the vibration energy can be buffered and absorbed by the water in the liquid storage buffer annular groove. At the same time, the rubber buffer ring gasket can further increase the shock-absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 Schematic diagram of the overall structure of the electronic expansion valve with shock absorption effect of the present invention;

[0035] Figure 2 This is a schematic structural diagram of the auxiliary shock-absorbing elastic plastic plate and the shock-absorbing transmission buffer rod of the present invention in a disassembled state;

[0036] Figure 3 Schematic diagram of the structure of the miniature buffer damper and the shock-absorbing extension arm of the present invention in a disassembled state;

[0037] Figure 4 It is a schematic structural diagram of the damping rod and the shock-absorbing transmission buffer rod of the present invention in a disassembled state;

[0038] Figure 5 This is a schematic structural diagram of a state in which the micro-buffer damper and the auxiliary shock-absorbing elastic plastic plate of the present invention are connected together;

[0039] Figure 6 It is a schematic structural diagram of the rubber buffer ring gasket and the liquid storage buffer annular groove in the disassembled state of the present invention;

[0040] Figure 7 is a cross-sectional view of the valve body of the present invention;

[0041] Figure 8 It is a structural schematic diagram of the bending buffer support frame plate of the present invention.

[0042] Description of reference numerals:

[0043] In the figure: 1. Electronic expansion valve assembly; 2. Capillary tube; 3. Water inlet pipe; 4. Valve body; 5. Shock-absorbing auxiliary clamping mechanism; 6. Shock-absorbing sleeve; 7. Shock-absorbing extension arm; 8. Bending buffer support frame plate; 9. Shock-absorbing transmission buffer rod; 10. Auxiliary shock-absorbing elastic plastic plate; 11. Connecting inner ring; 12. Elastic shock-absorbing upper part; 13. Elastic shock-absorbing lower part; 14. Elastic shock-absorbing middle part; 15. Removable end cover; 16. First locking bolt; 17. Shock-absorbing buffer cotton block; 18. Inner cavity; 19. Water pipe outlet; 20. Safety plug; 21. Micro buffer damper; 22 , pull ring handle; 23. Damping rod; 24. Compression spring; 25. Second locking bolt; 26. Damper chamber; 27. T-shaped sealing sleeve; 28. Through hole; 29. ​​First connecting plate; 30. Silicone sealing gasket; 31. Second connecting plate; 32. Buffer airbag bag; 33. Buffer inner cavity; 34. Mounting threaded hole; 35. Fixing bolt; 36. Liquid storage buffer annular groove; 37. Rubber buffer ring gasket; 38. Adjusting spring; 39. Valve core part; 40. Adjusting screw; 41. Bottom bending plate; 42. Top bending plate; 43. Rubber shock-absorbing pad. DETAILED DESCRIPTION

[0044] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0045] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.

[0046] This embodiment discloses Figures 1 to 8 An electronic expansion valve with a shock-absorbing effect is shown, comprising an electronic expansion valve assembly 1, a shock-absorbing auxiliary clamping mechanism 5, and an auxiliary shock-absorbing elastic plastic plate 10;

[0047] in:

[0048] The electronic expansion valve assembly 1 includes a valve body 4 and a water inlet pipe 3 (for refrigerant delivery) connected therethrough. The inner cavity of the valve body 4 is provided with a valve core 39, an adjusting spring 38, and an adjusting screw 40 that abut against each other. Figure 7 As shown. In addition Figure 1 In the embodiment, a capillary tube 2 is further provided on the top of the valve body 4.

[0049] In this embodiment, the shock-absorbing auxiliary clamping mechanism 5 includes a shock-absorbing sleeve 6 that is interference-fitted on the side of the valve body 4 and two shock-absorbing extension arms 7 that are symmetrically arranged on the outer wall of the shock-absorbing sleeve 6. The inner cavities 18 of the two shock-absorbing extension arms 7 are both embedded with micro-buffer dampers 21 at opposite ends. The two micro-buffer dampers 21 are buffer-connected at opposite ends with a shock-absorbing transmission buffer rod 9 that passes through the shock-absorbing sleeve 6 and extends into the inner cavity of the valve body 4. The opposite ends of the two shock-absorbing extension arms 7 are both connected with a detachable end cover 15 through a first locking bolt 16. The detachable end cover 15 can block the inner cavity 18 of the shock-absorbing extension arm 7, thereby being able to control the micro-buffer damping. The device 21 is installed and sealed, and at the same time, a damper chamber 26 for plugging in the micro buffer damper 21 is extended from the inside of the inner cavity 18, and a step is formed adjacent to the damper chamber 26 and the inner cavity 18. This step can limit the base of the micro buffer damper 21, and the base of the micro buffer damper 21 is fixedly connected to the step by a second locking bolt 25, and a pull ring handle 22 is welded on the outer wall of the base of the micro buffer damper 21. The design of the pull ring handle 22 is conducive to pulling the micro buffer damper 21 out of the damper chamber 26, thereby improving the disassembly and assembly efficiency of the micro buffer damper 21.

[0050] In this embodiment, a shock-absorbing and buffering cotton block 17 is placed between the inner cavity 18 and the detachable end cover 15. The shock-absorbing and buffering cotton block 17 can further perform recoil shock absorption and buffering on the micro buffer damper 21, further improving the shock-absorbing and buffering efficiency. At the same time, a snap-in groove for the pull ring handle 22 to snap in is cut on the inner wall of the shock-absorbing and buffering cotton block 17, thereby facilitating abutment with the base of the micro buffer damper 21.

[0051] In this embodiment, a liquid storage buffer annular groove 36 is provided inside the shock-absorbing sleeve 6, and a buffer liquid (such as water) is stored in the lower part of the liquid storage buffer annular groove 36. A rubber buffer ring gasket 37 is sealed above the buffer liquid and located in the liquid storage buffer annular groove 36. The rubber buffer ring gasket 37 is bonded to the upper part of the inner wall of the liquid storage buffer annular groove 36 to increase the tightness of the rubber buffer ring gasket 37 and prevent water from overflowing. The inner wall of the shock-absorbing sleeve 6 is symmetrically and laterally provided with a through hole 28 for the shock-absorbing transmission buffer rod 9 to pass through. The through hole 28 penetrates the liquid storage buffer annular groove 36 and extends to the outside of the shock-absorbing sleeve 6. The outer wall of the shock-absorbing sleeve 6 penetrates the water pipe outlet 19 with a safety plug 20.

[0052] In this embodiment, water is stored in the lower part of the liquid storage buffer annular groove 36, and a rubber buffer ring gasket 37 is sealed above the water. When the vibration generated by the adjustment spring 38 is transmitted to the shock absorbing sleeve 6, the vibration energy can be buffered and absorbed by the water in the liquid storage buffer annular groove 36. At the same time, the rubber buffer ring gasket 37 can further increase the shock absorption and buffering effect.

[0053] In this embodiment, in addition, a T-shaped sealing sleeve 27 is interference fit in each through hole 28, the convex end of the T-shaped sealing sleeve 27 abuts against the inner wall of the shock-absorbing sleeve 6, and the sleeve end of the T-shaped sealing sleeve 27 passes through the liquid storage buffer annular groove 36 and extends to the outside of the shock-absorbing sleeve 6, and the shock-absorbing transmission buffer rod 9 is clearance-fitted in the inner cavity of the T-shaped sealing sleeve 27.

[0054] In this embodiment, when the tail end of the T-shaped sealing sleeve 27 is interference fit in the through hole 28 and extends to the outside of the shock-absorbing sleeve 6, the through hole 28 can be sealed, which not only prevents the water in the liquid buffer annular groove 36 from leaking out of the through hole 28, but also can buffer and damp the shock-absorbing transmission buffer rod 9 that buffers the telescopic movement of the rod body.

[0055] In this embodiment, the auxiliary shock-absorbing elastic plastic plate 10 is fixed to one end of the shock-absorbing transmission buffer rod 9 in the inner cavity of the valve body 4, and the auxiliary shock-absorbing elastic plastic plate 10 includes an elastic shock-absorbing upper part 12, an elastic shock-absorbing middle part 14 and an elastic shock-absorbing lower part 13 of the dynamic contact adjustment spring 38. A connecting inner ring 11 is embedded in one side of the elastic shock-absorbing middle part 14 of the auxiliary shock-absorbing elastic plastic plate 10, and the connecting inner ring 11 is interference-fitted with the free end of the shock-absorbing transmission buffer rod 9, thereby completing the installation of the auxiliary shock-absorbing elastic plastic plate 10, as shown in FIG. Figure 7 As shown, the two shock-absorbing transmission buffer rods 9 drive the auxiliary shock-absorbing elastic plastic plates 10 to perform shock absorption in the inner cavity of the valve body 4 and on both sides of the adjustment spring 38.

[0056] In this embodiment, the damping rods 23 of the two micro-buffer dampers 21 are sleeved with compression springs 24 on their circumferential sides, the free end of each damping rod 23 is fixed with a first connecting disk 29, the tail end of the shock-absorbing transmission buffer rod 9 is fixed with a second connecting disk 31 installed together with the first connecting disk 29, and a buffer air bag 32 is provided in the buffer inner cavity 33 of the second connecting disk 31. The buffer air bag 32 elastically abuts against the outer wall of the first connecting disk 29. The design of the buffer air bag 32 can provide buffering and reduction between the micro-buffer damper 21 and the shock-absorbing transmission buffer rod 9. The cushioning airbag 32 is made of rubber, which helps to cushion the extrusion without breaking, thereby improving the service life of the cushioning airbag 32. A silicone sealing gasket 30 is added between the second connecting plate 31 and the first connecting plate 29, so that the second connecting plate 31 is fastened to the silicone sealing gasket 30 and the first connecting plate 29 by fixing bolts 35, and the added silicone sealing gasket 30 further helps the transmission buffering and shock absorption of the shock absorbing transmission buffer rod 9.

[0057] In this embodiment, the auxiliary shock-absorbing elastic plastic plate 10 has a corrugated structure (or wave shape), and the two elastic shock-absorbing upper parts 12 extend in a centripetal arc trajectory away from the elastic shock-absorbing middle part 14 at one end and dynamically abut against the adjustment spring 38. The end of the elastic shock-absorbing middle part 14 is a corrugated centripetal protrusion and is in sliding friction contact with the outer wall of the adjustment spring 38. The end of the elastic shock-absorbing lower part 13 away from the elastic shock-absorbing middle part 14 extends in a centripetal arc trajectory to receive the impact of the medium and thus provide fluctuation buffering.

[0058] In this embodiment, the auxiliary shock-absorbing elastic plastic plate 10 has a corrugated or wavy structure, which forms a continuous and uniform contact surface with the adjustment spring 38. Compared to a single flat surface or a simple curved surface, this design can more effectively disperse the vibration energy of the adjustment spring 38. The alternating peaks and troughs of the waves contact the adjustment spring 38, dispersing and absorbing the vibration energy at multiple contact points, thereby improving the shock absorption effect.

[0059] In this embodiment, the adjustment spring 38 will experience different degrees of expansion and contraction during operation. The wavy plastic plate can better adapt to the deformation of the adjustment spring 38 due to its own flexibility in shape. Regardless of whether the adjustment spring 38 is in a compressed or stretched state, the wavy plate can maintain good contact, ensuring that shock absorption and buffering are continuously provided within the full working stroke of the adjustment spring 38.

[0060] In this embodiment, each band of the wavy plastic plate can be regarded as a series of miniature independent shock-absorbing units. As the vibration amplitude of the adjustment spring 38 increases, more bands participate in the shock-absorbing process, providing a progressive damping effect. This design helps to maintain good sensitivity in small vibrations and provide stronger suppression force in large vibrations, thereby achieving wide-range vibration control.

[0061] In this embodiment, the wavy design can provide a larger contact area within the limited space in the inner cavity of the valve body 4, thereby improving the shock absorption capacity per unit volume. This is particularly important for the interior of the electronic expansion valve with a compact space, and can achieve efficient shock absorption and buffering without affecting other functions of the valve body 4.

[0062] In this embodiment, the auxiliary shock-absorbing elastic plastic plate 10 has a corrugated structure or a wavy complex geometric structure, which helps to change the acoustic characteristics of the vibration of the adjusting spring 38. Through interference and scattering effects, the vibration noise caused by the extension and compression of the adjusting spring 38 within a specific frequency range can be reduced, which helps to improve the overall acoustic performance of the electronic expansion valve, thereby achieving the effect of reducing noise and improving usage efficiency and user experience.

[0063] In this embodiment, if the shock-absorbing transmission buffer rod 9 drives the auxiliary shock-absorbing elastic plastic plate 10 in the flow channel of the electronic expansion valve, combined with wave-shaped or other spiral elements to guide the flow of the refrigerant, the spiral flow of the refrigerant can be achieved. When the auxiliary shock-absorbing elastic plastic plate 10 guides the refrigerant to flow in a spiral, the spiral flow can smooth the flow rate changes, reduce the generation of turbulence and vortices, thereby reducing the flow resistance and the resulting noise, which is beneficial to improving the working efficiency of the electronic expansion valve and reducing the overall system noise level.

[0064] In this embodiment, within the inner cavity of the valve body 4 of the electronic expansion valve, two auxiliary shock-absorbing elastic plastic plates 10 centripetally clamp the adjustment spring 38, forming an elastic abutment therewith, thereby providing shock absorption and cushioning for the adjustment spring 38. This design concept aims to utilize the cushioning properties of the micro-buffer 21 and the auxiliary shock-absorbing elastic plastic plates 10, as well as the centripetal clamping structure, to reduce the effects of vibration or impact on the adjustment spring 38 during operation.

[0065] In this embodiment, the auxiliary shock-absorbing elastic plastic plate 10 generally operates in a certain range of low temperature to normal temperature (depending on the type and application of the refrigeration system) in the valve body 4. Therefore, the selected material of the auxiliary shock-absorbing elastic plastic plate 10 should be able to maintain good mechanical properties at these temperatures and will not lose elasticity and shock-absorbing ability due to hardening at low temperatures or softening at high temperatures.

[0066] In this embodiment, common low-temperature resistant plastics such as polytetrafluoroethylene (PTFE), polycarbonate (PC), and polyether ether ketone (PEEK), and high-temperature resistant plastics such as polyphenylene sulfide (PPS) and polyetherimide (PEI, also known as ULTEM) are selected according to specific working temperature requirements.

[0067] In this embodiment, the auxiliary shock-absorbing elastic plastic plate 10 serves as a shock-absorbing element. The auxiliary shock-absorbing elastic plastic plate 10 should possess sufficient elasticity to absorb and disperse vibration energy, while also possessing good toughness to resist fatigue fracture. Materials with good elasticity and toughness, such as polyurethane (PU), silicone rubber (SiR), and thermoplastic elastomer (TPE), can provide effective cushioning and should be selected based on the specific working environment requirements.

[0068] In this embodiment, the auxiliary shock-absorbing elastic plastic plate 10 deforms when subjected to force within the valve body 4, absorbing and dissipating the vibration energy from the adjustment spring 38. The centripetal clamping design limits the vibration of the adjustment spring 38 to a certain extent along a predetermined axial path, further reducing the possibility of vibration propagation to other parts of the valve body 4, thereby achieving shock absorption for the adjustment spring 38.

[0069] In this embodiment, the design of the two auxiliary shock-absorbing elastic plastic plates 10 being clamped concentrically in the valve body 4 also has the following advantages: (1) The concentric clamping structure helps to concentrate the vibration energy of the adjustment spring 38 on the limited contact surface with the auxiliary shock-absorbing elastic plastic plate 10, rather than distributing it uniformly over the entire length of the adjustment spring 38. Energy concentration is conducive to improving the absorption efficiency of the auxiliary shock-absorbing elastic plastic plate 10 for vibration energy, because the plastic plate only needs to deform in the part of the area where it contacts the adjustment spring 38 to absorb and dissipate energy; (2) The concentric clamping can provide a certain preload force, which helps to maintain the dynamic stability of the adjustment spring 38 during vibration. The appropriate preload force can enable the adjustment spring 38 to maintain its axial direction during vibration, reduce the additional vibration and noise caused by deflection or torsional deformation, and thus improve the stability and reliability of the entire shock absorption; (3) The concentrically clamped auxiliary shock-absorbing elastic plastic plate 10 can not only absorb vibration energy, but also protect both sides of the adjustment spring 38 from direct impact or wear. The auxiliary shock-absorbing elastic plastic plate 10 can serve as the first line of defense to absorb and disperse external impact force, reduce direct damage to the regulating spring, and extend the service life of the spring.

[0070] In this embodiment, to ensure effective shock absorption and cushioning, the coefficient of friction between the auxiliary shock-absorbing elastic plastic plate 10 and the adjustment spring 38 should be as low as possible. A low coefficient of friction reduces heat and wear generated by friction, while ensuring that the adjustment spring 38 can smoothly expand and contract during vibration, avoiding excessive frictional resistance that could affect its normal operation. Therefore, a wear-resistant layer or coating is sprayed on the opposing sides of the two auxiliary shock-absorbing elastic plastic plates 10 to reduce the friction coefficient.

[0071] In this embodiment, although a low friction coefficient is required, it is still necessary to prevent the adjustment spring 38 from sliding relative to the auxiliary shock-absorbing elastic plastic plate 10 during the vibration process. Therefore, anti-slip grooves (not shown in the figure) are provided on the opposite sides of the two auxiliary shock-absorbing elastic plastic plates 10 before spraying the wear-resistant layer or coating them to increase the adhesion of the contact surface and ensure that the adjustment spring 38 and the auxiliary shock-absorbing elastic plastic plate 10 remain relatively fixed during the vibration process, effectively transmitting and consuming vibration energy.

[0072] In this embodiment, the bottom surfaces of the two shock-absorbing extension arms 7 are fixedly connected to the bent buffer support frame plates 8, and the top surfaces of the top bent plates 42 of the two bent buffer support frame plates 8 are bonded with rubber shock-absorbing pads 43. The rubber shock-absorbing pads 43 further increase the shock-absorbing and buffering effect. The top bent plates 42 are connected to the shock-absorbing extension arms 7 by bolts. The bottom bent plates 41 of the two bent buffer support frame plates 8 are arranged centripetally. The top surfaces of the two bottom bent plates 41 are symmetrically provided with mounting threaded holes 34. The mounting threaded holes 34 are fixed to the bending buffer support frame plates 8 by cooperating with bolts.

[0073] Working principle:

[0074] In this electronic expansion valve with a shock-absorbing effect, the shock-absorbing sleeve 6 is interference-fitted to the outer wall of the valve body 4. The base of the micro-buffer damper 21 is fixedly connected to the stepped platform by a second locking bolt 25. A pull ring handle 22 is designed on the outer wall of the base of the micro-buffer damper 21 to facilitate pulling the micro-buffer damper 21 out of the damper chamber 26.

[0075] The two shock-absorbing transmission buffer rods 9 drive the auxiliary shock-absorbing elastic plastic plate 10 to be centripetally clamped on both sides of the adjustment spring 38. The end of the elastic shock-absorbing upper portion 12 away from the elastic shock-absorbing middle portion 14 extends in a centripetal arc trajectory and dynamically abuts against the adjustment spring 38. When the adjustment spring 38 vibrates, this vibration is transmitted to the auxiliary shock-absorbing elastic plastic plate 10. The adjustment spring 38 undergoes different degrees of expansion and contraction during operation. Regardless of whether the adjustment spring 38 is in a compressed or stretched state, the wavy auxiliary shock-absorbing elastic plastic plate 10 can maintain good contact, ensuring that shock absorption and buffering are continuously provided within the full working stroke of the adjustment spring 38. At the same time, the recoil vibration of the shock-absorbing transmission buffer rod 9 is damped and buffered under the buffering of the micro-buffer 21.

[0076] The cushioning airbag 32 absorbs the collision force between the micro-cushion damper 21 and the shock-absorbing transmission buffer rod 9. When the vibration generated by the adjustment spring 38 is transmitted to the shock-absorbing sleeve 6, the water in the liquid-storage buffer annular groove 36 buffers and absorbs the vibration energy, and cooperates with the rubber buffer ring gasket 37 to enhance the shock-absorbing effect.

[0077] The top bent plates 42 of the two bent buffer support plates 8 are connected to the shock-absorbing extension arms 7 through bolts to support the two shock-absorbing extension arms 7, while the two bottom bent plates 41 are fixed to the bent buffer support plates 8 by cooperating with the bolts.

[0078] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "including an element defined by ... does not exclude the presence of other identical elements in the process, method, article or device that includes the element."

[0079] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An electronic expansion valve with a shock-absorbing effect, characterized in that: include: An electronic expansion valve assembly (1) comprises a valve body (4) and a water inlet pipe (3) connected therethrough, wherein a valve core member (39), an adjusting spring (38), and an adjusting screw (40) are provided in an inner cavity of the valve body (4) and are in contact with each other; A shock-absorbing auxiliary clamping mechanism (5) comprises a shock-absorbing sleeve (6) interference-fitted on the circumference of the valve body (4) and two shock-absorbing extension arms (7) symmetrically arranged on the outer wall of the circumference of the shock-absorbing sleeve (6), wherein the inner cavities (18) of the two shock-absorbing extension arms (7) are both embedded with micro-buffer dampers (21) at opposite ends thereof, and the opposite ends of the two micro-buffer dampers (21) are both buffer-connected with a shock-absorbing transmission buffer rod (9) that penetrates the shock-absorbing sleeve (6) and extends into the inner cavity of the valve body (4); An auxiliary shock-absorbing elastic plastic plate (10) is fixed to one end of the shock-absorbing transmission buffer rod (9) in the inner cavity of the valve body (4), and includes an elastic shock-absorbing upper portion (12), an elastic shock-absorbing middle portion (14), and an elastic shock-absorbing lower portion (13) of a dynamic contact adjustment spring (38); Wherein, the auxiliary shock-absorbing elastic plastic plate (10) has a corrugated structure; The damping rods (23) of the two micro-buffer dampers (21) are both sleeved with compression springs (24) on their circumferential sides, and a first connecting plate (29) is fixed to the free end of each damping rod (23); A second connecting plate (31) mounted together with the first connecting plate (29) is fixed to the tail end of the shock-absorbing transmission buffer rod (9); A buffer airbag (32) is provided in the buffer inner cavity (33) of the second connecting disk (31), and the buffer airbag (32) elastically abuts against the outer wall of the first connecting disk (29); A liquid storage buffer annular groove (36) is provided inside the shock-absorbing sleeve (6), a buffer liquid is stored in the lower portion of the liquid storage buffer annular groove (36), and a rubber buffer ring gasket (37) is sealed and connected above the buffer liquid and located in the liquid storage buffer annular groove (36).

2. The electronic expansion valve with a shock-absorbing effect according to claim 1, characterized in that: The inner wall of the shock-absorbing sleeve (6) is symmetrically and laterally provided with a through hole (28) for the shock-absorbing transmission buffer rod (9) to pass through, and the through hole (28) passes through the liquid storage buffer annular groove (36) and extends to the outside of the shock-absorbing sleeve (6); The outer wall of the shock-absorbing sleeve (6) passes through a water pipe opening (19) having a safety plug (20).

3. The electronic expansion valve with a shock-absorbing effect according to claim 2, characterized in that: A T-shaped sealing sleeve (27) is interference-fitted in each through hole (28), the convex end of the T-shaped sealing sleeve (27) abuts against the inner wall of the shock-absorbing sleeve (6), and the sleeve end of the T-shaped sealing sleeve (27) passes through the liquid storage buffer annular groove (36) and extends to the outside of the shock-absorbing sleeve (6); The shock-absorbing transmission buffer rod (9) is clearance-fitted into the inner cavity of the T-shaped sealing sleeve (27).

4. The electronic expansion valve with a shock-absorbing effect according to claim 3, characterized in that: One end of the two elastic shock-absorbing upper parts (12) away from the elastic shock-absorbing middle part (14) extends in a centripetal arc trajectory and dynamically abuts against the adjustment spring (38).

5. The electronic expansion valve with a shock-absorbing effect according to claim 4, characterized in that: The end portion of the elastic shock-absorbing middle portion (14) that projects centripetally in the form of a corrugation is in sliding frictional contact with the outer wall of the regulating spring (38).

6. The electronic expansion valve with a shock-absorbing effect according to claim 5, characterized in that: One end of the elastic shock-absorbing lower portion (13) away from the elastic shock-absorbing middle portion (14) extends in a centripetal arc trajectory to receive the impact of the medium and to buffer the subsequent fluctuations.

7. The electronic expansion valve with a shock-absorbing effect according to claim 6, characterized in that: The bottom surfaces of the two shock-absorbing extension arms (7) are fixedly connected to a bent buffer support frame plate (8), and the top surfaces of the top bent plates (42) of the two bent buffer support frames (8) are bonded to rubber shock-absorbing pads (43); The top bent plate (42) is connected to the shock-absorbing extension arm (7) via bolts; The bottom bent plates (41) of the two bent buffer support plates (8) are arranged centripetally.

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