WO2023142224A1 - 电子膨胀阀和制冷设备 - Google Patents

电子膨胀阀和制冷设备 Download PDF

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Publication number
WO2023142224A1
WO2023142224A1 PCT/CN2022/079338 CN2022079338W WO2023142224A1 WO 2023142224 A1 WO2023142224 A1 WO 2023142224A1 CN 2022079338 W CN2022079338 W CN 2022079338W WO 2023142224 A1 WO2023142224 A1 WO 2023142224A1
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WO
WIPO (PCT)
Prior art keywords
valve
conduit
electronic expansion
expansion valve
noise
Prior art date
Application number
PCT/CN2022/079338
Other languages
English (en)
French (fr)
Inventor
陈超
曾庆军
杨茂
Original Assignee
广东威灵电机制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东威灵电机制造有限公司 filed Critical 广东威灵电机制造有限公司
Publication of WO2023142224A1 publication Critical patent/WO2023142224A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present application relates to the field of electronic expansion valves, in particular to an electronic expansion valve and refrigeration equipment.
  • the electronic expansion valve is an electromagnetic control component, which is used in the industrial control system to control the on-off of the medium or adjust the flow of the medium and other parameters, so as to achieve the expected control.
  • electronic expansion valves are used to adjust the cooling capacity entering the evaporator, supply the optimum amount of refrigerant to the evaporator, and ensure the stable operation of the refrigeration system.
  • the refrigerant flashes through the valve port and the conduit after being throttled by the valve port.
  • the high-speed refrigerant flows along the central area of the pipe, and the flow velocity in the area near the pipe wall is low, thereby generating backflow in the area near the pipe wall. It also hits the pipe wall.
  • the structure of the existing electronic expansion valve is unreasonable, and the aerodynamic noise accompanied by backflow and the mechanical vibration noise generated by the impact of the pipe wall are very strong, which greatly affects the user experience.
  • the main purpose of this application is to propose an electronic expansion valve, which aims to optimize the structure of the electronic expansion valve to reduce the noise of the electronic expansion valve, thereby improving user experience.
  • the electronic expansion valve proposed by this application includes:
  • the valve housing is provided with a valve cavity and a valve port communicating with the valve cavity.
  • the valve housing includes a valve seat, and the valve seat includes a seat body and a connecting convex portion protruding outside the seat body.
  • the valve port is provided through the seat body to the connecting convex part, and the seat body and the connecting convex part are integrally formed;
  • the first conduit is connected to the valve housing and communicates with the valve cavity through the valve port;
  • the inner diameter of the first conduit is greater than or equal to 5mm, and the wall thickness of the first conduit is greater than or equal to 0.5mm.
  • valve casing is further provided with a refrigerant outlet communicating with the valve cavity
  • electronic expansion valve further includes a second conduit connected to the valve casing, and the second conduit passes through The refrigerant port communicates with the valve cavity, and at least one of the first conduit and the second conduit is provided with a first noise reduction component.
  • the first noise reduction member is configured as a sheet structure, and the peripheral edge of the first noise reduction member abuts against the inner wall surface of the corresponding first conduit or the second conduit.
  • the valve housing includes a valve seat
  • the valve seat includes a seat body and a connecting protrusion protruding outside the seat body, and the valve port extends from the seat body to the connecting protrusion.
  • the first conduit is connected to the connecting convex part, and the first noise reducing part is arranged in the first conduit, and the first noise reducing part is connected to the end surface of the connecting convex part .
  • the first noise reducing member is configured as a porous structure.
  • a second noise reduction component is provided in the valve chamber.
  • the electronic expansion valve further includes a valve needle, the valve needle is detachably inserted in the valve port, the second noise reduction member is arranged in a ring structure, and the second noise reduction The component ring is arranged outside the valve needle.
  • valve cavity is further provided with a guide sleeve fixedly connected to the valve housing, the valve needle is inserted into the valve port after passing through the guide sleeve, and the second drop The two ends of the noise part abut against the guide sleeve and the valve housing respectively.
  • the second noise reducing member is configured as a porous structure.
  • the present application also proposes a refrigeration device, including the aforementioned electronic expansion valve.
  • the inner diameter of the first conduit is greater than or equal to 5 mm.
  • the inner diameter of the conduits of the electronic expansion valve is 4.95 mm.
  • the inner diameter of the first conduit is increased to provide a larger space for the refrigerant to flow.
  • the return flow of the refrigerant can also have a larger flow area, which is beneficial to reduce the aerodynamic noise accompanied by the return flow, and can reduce the impact of the return flow of the refrigerant on the inner wall of the first conduit to a certain extent, so as to reduce the first Catheter mechanical vibration noise.
  • the inner diameter of the first conduit is greater than or equal to 7mm, which can provide a larger flow area for the return flow of the refrigerant, thereby further reducing the noise of the electronic expansion valve.
  • the wall thickness of the first conduit is greater than or equal to 0.5 mm.
  • the technical solution of the present application increases the wall thickness of the first conduit, on the one hand, it can improve the ability of the first conduit to resist backflow impact, and on the other hand, it can improve the ability of the first conduit to absorb vibration, thus, the mechanical properties of the first conduit The vibration noise is reduced, so that the noise performance of the electronic expansion valve is better, and the user experience can be improved.
  • the wall thickness of the first conduit is greater than or equal to 0.7 mm, which has a better effect of reducing mechanical vibration noise.
  • performing the above optimization on any one of the inner diameter and the wall thickness of the first conduit can reduce noise, thereby improving user experience.
  • Fig. 1 is a schematic structural view of an embodiment of the electronic expansion valve of the present application
  • FIG. 2 is a partial enlarged view of A in FIG. 1 .
  • the directional indications are only used to explain the position in a certain posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly.
  • the present application proposes an electronic expansion valve.
  • the electronic expansion valve includes:
  • the valve housing 100 is provided with a valve chamber 101 and a valve port 102 communicating with the valve chamber 101.
  • the valve housing 100 includes a valve seat 110, and the valve seat 110 includes a seat body 111 and a valve seat 111 protruding from the seat.
  • the connecting convex part 112 outside the main body 111, the valve port 102 is provided through from the seat body 111 to the connecting convex part 112, the seat body 111 and the connecting convex part 112 are integrally formed; and
  • the first conduit 200 is connected to the valve housing 100 and communicates with the valve cavity 101 through the valve port 102 .
  • valve housing 100 is also provided with a refrigerant outlet 103 communicating with the valve cavity 101 .
  • a conduit 200 is provided.
  • flash evaporation will occur in the valve port 102 and the first conduit 200.
  • the flow velocity in the area near the pipe wall is low, so under the action of force, the refrigerant generates backflow in the area near the pipe wall. This part of the backflow will not only generate strong aerodynamic noise itself, but also hit the pipe wall to generate mechanical vibration noise.
  • the seat body 111 and the connecting convex portion 112 are integrally formed.
  • the valve housing also includes an independently formed valve core seat, the valve port is arranged on the valve core seat, and the valve seat is provided with an installation port for the valve core seat to be installed, and the valve core seat is installed on the installation port Then it is fixedly connected with the valve seat by welding.
  • the integrally formed valve seat 110 has strong structural stability and can better withstand the impact of the refrigerant flowing through the valve port 102, and the wall of the seat body 111 between the refrigerant outlet 103 and the valve port 102 The surface is smooth and will not affect the refrigerant flow on the refrigerant flow path.
  • the inner diameter of the first conduit 200 is greater than or equal to 5mm.
  • the inner diameter of the conduits of the electronic expansion valve is 4.95 mm.
  • the inner diameter of the first conduit 200 is increased to provide a larger space for the refrigerant to flow.
  • the return flow of the refrigerant can also have a larger flow area, which is beneficial to reduce the aerodynamic noise accompanied by the return flow, and can reduce the impact of the return flow of the refrigerant on the inner wall of the first conduit 200 to a certain extent, so as to reduce the impact of the second pipe 200 A mechanical vibration noise of the catheter 200.
  • the inner diameter of the first conduit 200 is greater than or equal to 7 mm, which can provide a larger flow area for the return flow of the refrigerant, thereby further optimizing the noise performance of the low electronic expansion valve.
  • the wall thickness of the first conduit 200 is greater than or equal to 0.5 mm.
  • the wall thickness of the first conduit 200 is greater than or equal to 0.7 mm, which has a better effect of reducing mechanical vibration noise.
  • performing the above optimization on any one of the inner diameter and the wall thickness of the first conduit can reduce noise, thereby improving user experience.
  • the electronic expansion valve further includes a second conduit 300 connected to the valve housing 100 , and the second conduit 300 communicates through the refrigerant outlet 103 In the valve cavity 101 , at least one of the first conduit 200 and the second conduit 300 is provided with a first noise reducing element 400 .
  • the refrigerant flows from the second conduit 300 through the refrigerant outlet 103 into the valve cavity 101, and then flows into the first conduit 200 through the valve port 102; when the electronic expansion valve of the present application When the expansion valve is in the heating condition, the refrigerant will enter the valve cavity 101 from the first conduit 200 through the refrigerant outlet 103 and then flow into the second conduit 300 through the refrigerant outlet 103 .
  • at least one of the first conduit 200 and the second conduit 300 is provided with a first noise reduction member 400, the first noise reduction member 400 can reduce the noise of the refrigerant flow in the corresponding conduit, thereby further optimizing the electronic Noise performance of the expansion valve.
  • the first noise reducing member 400 is configured as a porous structure. In this way, the first noise reducing member 400 can rectify the refrigerant flowing through the corresponding conduit, so as to avoid the turbulent flow noise caused by the disordered flow of the refrigerant in the conduit, thereby playing the role of noise reduction.
  • the first noise reduction component 400 can also filter foreign matter in the refrigerant flowing through the conduit to prevent welding slag, welding skin or other impurities from blocking the electronic expansion valve, so as to ensure the working performance of the electronic expansion valve.
  • the first noise reducing member 400 is configured as a sheet structure, and the periphery of the first noise reducing member 400 abuts against the corresponding first noise reducing member 400 .
  • An inner wall of the first conduit 200 or the second conduit 300 it can be ensured that the refrigerant in the conduit can all flow through the first noise reduction component 400 and all receive the rectification effect of the first noise reduction component 400 , so as to ensure the noise reduction effect of the first noise reduction component 400 .
  • the first conduit 200 is connected to the connecting convex portion 112 , and the first noise reducing member 400 is disposed inside the first conduit 200 , so The first noise reducing member 400 is connected to the end surface of the connecting protrusion 112 . In this way, the installation stability of the first noise reduction component 400 can be further improved.
  • the periphery of the first noise reducing member 400 is protruded with a mounting protrusion, and the inner wall surface of the corresponding conduit is provided with a mounting groove, and the free end of the mounting groove is provided through one end of the conduit for the installation of the protrusion. part inserted.
  • the first noise reducing member 400 can be fixed in the installation groove through the installation protrusion, so as to achieve a fixed connection with the conduit.
  • the first conduit 200 is sheathed outside the connecting convex portion 112, and the end of the first conduit 200 abuts against the outside of the seat body 111 to ensure
  • the connection stability between the first conduit 200 and the valve seat 110 further, the first conduit 200 can be connected to the seat body 111 by welding, so as to improve the connection stability between the first conduit 200 and the valve seat 110 .
  • the mounting groove needs to extend inwards for an end distance from the end of the first conduit 200, and the mounting protrusion is inserted from the free end of the mounting groove and fixed to the end of the mounting groove, so that the first conduit 200 is sleeved on the connecting protrusion.
  • the first noise reducing member 400 can abut against the end of the connecting protruding part 112 .
  • the pre-assembly between the first noise reduction part 400 and the first conduit 200 can be carried out first, by aligning the installation protrusion with the installation groove, and adjusting the position of the first noise reduction part 400
  • the installation direction is such that the radial direction of the first noise reduction member 400 is parallel to the axial direction of the first conduit 200. Since the installation protrusion and the installation groove are fitted in this direction, the installation protrusion can slide smoothly to end of the mounting slot.
  • the first noise reducing part 400 can be properly inclined first, and then the first conduit 200 can be sleeved outside the connecting convex part 112, so that the connecting convex part 112 can abut against the first noise reducing part in the first conduit 200 400, the connecting convex part 112 can push the first noise reducing part 400, so that it continues to tilt until the end of the first conduit 200 touches the seat body 111, the first noise reducing part 400 is also tilted in place, and the first noise reducing part 400
  • the peripheral edge of the noise component 400 abuts against the inner wall of the first conduit 200 , and the first noise reduction component 400 also abuts against the end surface of the connecting protrusion 112 .
  • the connection between the first noise reduction member 400 , the first conduit 200 and the valve seat 110 is not only stable, but also convenient and quick to assemble, which is beneficial to the reliable installation of the first noise reduction member 400 .
  • the valve cavity 101 is provided with a second noise reduction component 500 , so that the second noise reduction component 500 can reduce the refrigerant in the valve cavity 101 function to reduce the noise of the refrigerant flowing in the valve chamber 101, thereby further optimizing the noise level of the electronic expansion valve.
  • the electronic expansion valve further includes a valve needle 600, the valve needle 600 is detachably inserted into the valve port 102, and the second noise reducing member 500 is arranged in an annular structure , the second noise reduction member 500 is arranged outside the valve needle 600 .
  • the second noise reducing member 500 can play a role of noise reduction in the flow path of the refrigerant flowing from the valve cavity 101 to the valve port 102 and in the flow path of the refrigerant flowing from the valve port 102 to the valve cavity 101 . It can be understood that at the connection between the valve port 102 and the valve cavity 101, due to drastic changes in the flow path, the refrigerant tends to flow chaotically and generate noise. The role of the refrigerant, and reduce the noise of the refrigerant here.
  • a guide sleeve 700 fixedly connected to the valve housing 100 is provided in the valve chamber 101 , and the valve needle 600 passes through the valve housing 100 .
  • the guide sleeve 700 is inserted into the valve port 102 behind, and the two ends of the second noise reducing member 500 abut against the guide sleeve 700 and the valve housing 100 respectively.
  • the end of the second noise reducing member 500 abuts against the seat body 111 and is arranged around the valve port 102 .
  • the second noise reducing member 500 is limited by the guide sleeve 700 and the seat body 111 on both sides in the axial direction, so that the second noise reducing member 500 is stably installed in the valve cavity 101 .
  • a limit ring groove can be provided at the corresponding position of the guide sleeve 700 and the seat body 111 for the end of the second noise reduction member 500 to snap into; or, one end of the second noise reduction member 500 can be welded It is fixed on the seat body 111 , and the other end abuts against the outer wall of the guide sleeve 700 .
  • the second noise reduction member 500 is configured as a porous structure.
  • the second noise reducing member 500 can rectify the refrigerant flowing through the valve chamber 101 to avoid turbulent flow noise caused by the disordered flow of the refrigerant in the valve chamber 101 , so as to reduce noise.
  • the second noise reducing member 500 can also filter foreign matter in the refrigerant flowing through the valve cavity 101 to prevent welding slag, welding skin or other impurities from blocking the valve port 102 of the electronic expansion valve, so as to ensure the working performance of the electronic expansion valve.
  • the refrigerant passage 103 is arranged on the side of the valve seat 110, and the guide sleeve 700 has a part opposite to the refrigerant passage 103, and the outer wall of the guide sleeve 700 of this part is provided with a guide
  • the flow cone surface 710 that is, the guide sleeve 700 is provided with a flow guide cone surface 710 opposite to the refrigerant outlet 103 , and the flow guide cone surface 710 is arranged toward the side where the valve port 102 is located.
  • the side where the first conduit 200 is located is below the electronic expansion valve.
  • the refrigerant when the electronic expansion valve is in the cooling condition, the refrigerant enters from the second conduit 300 on the side of the electronic expansion valve and flows out from the first conduit 200 below the electronic expansion valve; when the electronic expansion valve is in the heating condition, The refrigerant enters from the first conduit 200 below the electronic expansion valve, and flows out from the second conduit 300 on the side of the electronic expansion valve.
  • the diversion cone 710 can guide the refrigerant to reduce the refrigerant. Different from the refrigeration operation, due to the existence of gravity, the refrigerant has a certain tendency to flow to the valve port 102.
  • the electronic expansion valve When the electronic expansion valve is in the heating condition, it can only be guided by the diversion cone surface 710 to pass through the valve port 102.
  • the refrigerant flowing into the valve cavity 101 is guided to the refrigerant outlet 103 . Therefore, the setting of the diversion cone surface 710 can guide the flow of refrigerant to ensure the performance of the electronic expansion valve, especially, it can significantly improve the refrigerant flow inside the valve cavity 101 of the electronic expansion valve under the heating condition. flow conditions, so as to avoid the flow disorder of the refrigerant in the valve cavity 101 and affect the working performance of the electronic expansion valve.
  • the end of the second noise reduction member 500 should abut against the side of the flow guide cone 710 near the bottom of the valve seat 110 , so that the flow guide cone 710 has a part exposed to the second noise reduction member 500 , so as to avoid affecting the diversion effect of the diversion cone surface 710 .
  • the present application also proposes a refrigeration device, which includes an electronic expansion valve.
  • a refrigeration device which includes an electronic expansion valve.
  • the electronic expansion valve For the specific structure of the electronic expansion valve, refer to the above-mentioned embodiments. Since this refrigeration device adopts all the technical solutions of all the above-mentioned embodiments, it has at least the above-mentioned embodiments. All the beneficial effects brought by the technical solution will not be repeated here.
  • the refrigeration equipment may be an air conditioner, a freezer, a refrigerator, a heat pump water heater, and the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Details Of Valves (AREA)
  • Lift Valve (AREA)

Abstract

一种电子膨胀阀和制冷设备，其中，电子膨胀阀包括阀壳体（100）和第一导管（200），所述阀壳体（100）设有阀腔（101）及与所述阀腔（101）连通的阀口（102），所述阀壳体（100）包括阀座（110），所述阀座（110）包括座本体（111）和凸设于所述座本体（111）外的连接凸部（112），所述阀口（102）自所述座本体（111）向所述连接凸部（112）贯穿设置，所述座本体（111）和所述连接凸部（112）一体成型，所述第一导管（200）连接于所述阀座（110），并通过所述阀口（102）连通于所述阀腔（101），所述第一导管（200）的内径大于或等于5mm；和/或，所述第一导管（200）的壁厚大于或等于0.5mm。该电子膨胀阀的结构可以降低电子膨胀阀的噪音，从而提升用户的使用体验。

Description

电子膨胀阀和制冷设备
本申请要求于2022年1月26日申请的、申请号为202210093209.1的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子膨胀阀领域，特别涉及一种电子膨胀阀和制冷设备。
 背景技术
电子膨胀阀是一种电磁控制的元器件，用在工业控制系统中控制介质的通断或调整介质的流量等参数，从而实现预期的控制。在空调、冰箱、热泵热水器及各类制冷系统中，电子膨胀阀则用于调节进蒸发器的制冷量，向蒸发器供给最适量的制冷剂，保证制冷系统的稳定运行。制冷时，制冷剂经阀口节流后在阀口及导管内产生闪蒸现象，高速制冷剂沿管路中心区域流动，管壁附近区域流速较低，从而在管壁附近区域产生回流，回流还会撞击管壁。然而，现有的电子膨胀阀结构不合理，回流伴随的气动噪声以及管壁被撞击产生的机械振动噪声非常强烈，非常影响用户的使用体验。
 技术问题
本申请的主要目的是提出一种电子膨胀阀，旨在优化电子膨胀阀的结构，以降低电子膨胀阀的噪音，从而提升用户的使用体验。
 技术解决方案
为实现上述目的，本申请提出的电子膨胀阀，包括：
阀壳体，设有阀腔及与所述阀腔连通的阀口，所述阀壳体包括阀座，所述阀座包括座本体和凸设于所述座本体外的连接凸部，所述阀口自所述座本体向所述连接凸部贯穿设置，所述座本体和所述连接凸部一体成型；以及
第一导管，所述第一导管连接于所述阀壳体，并通过所述阀口连通于所述阀腔；
和/或，所述第一导管的内径大于或等于5mm，所述第一导管的壁厚大于或等于0.5mm。
在一实施例中，所述阀壳体还开设有与所述阀腔连通的冷媒过口，所述电子膨胀阀还包括连接于所述阀壳体的第二导管，所述第二导管通过所述冷媒过口连通于所述阀腔，所述第一导管和所述第二导管中的至少一者设置有第一降噪件。
在一实施例中，所述第一降噪件设置为片状结构，所述第一降噪件的周缘抵接于对应的所述第一导管或所述第二导管的内壁面。
在一实施例中，所述阀壳体包括阀座，所述阀座包括座本体和凸设于所述座本体外的连接凸部，所述阀口自所述座本体向所述连接凸部贯穿设置，所述第一导管连接于所述连接凸部，且所述第一导管内设置有所述第一降噪件，所述第一降噪件连接于所述连接凸部的端面。
在一实施例中，所述第一降噪件设置为多孔结构。
在一实施例中，所述阀腔内设有第二降噪件。
在一实施例中，所述电子膨胀阀还包括阀针，所述阀针可分离地插设于所述阀口，所述第二降噪件设置为环状结构，所述第二降噪件环设于所述阀针外。
在一实施例中，所述阀腔内还设有固定连接于所述阀壳体的导向套，所述阀针穿设所述导向套后插设于所述阀口，所述第二降噪件的两端分别抵接于所述导向套和所述阀壳体。
在一实施例中，所述第二降噪件设置为多孔结构。
本申请还提出一种制冷设备，包括前述的电子膨胀阀。
 有益效果
在本申请的电子膨胀阀中，在一实施例中，第一导管的内径大于或等于5mm。现有技术中，电子膨胀阀的导管的内径均为4.95mm，本申请中，通过增大第一导管的内径，以提供更大的空间供冷媒流动。由此，冷媒的回流也能具有更大的流动区域，有利于减小回流伴随的气动噪声，以及能够在一定程度上减小冷媒的回流对第一导管的内壁面的撞击，以降低第一导管的机械振动噪音。优选地，第一导管的内径大于或等于7mm，能给冷媒的回流提供更大的流动区域，从而能进一步降低电子膨胀阀的噪音。
在本申请的电子膨胀阀中，在一实施例中，第一导管的壁厚大于或等于0.5mm。本申请技术方案通过增大第一导管的壁厚，一方面，能够提升第一导管抵御回流撞击的能力，另一方面，能够提升第一导管吸收振动的能力，由此，第一导管的机械振动噪音得以降低，从而使得电子膨胀阀的噪音性能更优，能够提升用户的使用体验。优选地，第一导管的壁厚大于或等于0.7mm，其降低机械振动噪音的效果更好。
也即，在本申请中，对第一导管的内径和壁厚中的任一者进行上述优化，均能起到降低噪音的作用，从而能够提升用户的使用体验。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请电子膨胀阀一实施例的结构示意图；
图2为图1中A处的局部放大图。
附图标号说明：
标号 名称 标号 名称
100 阀壳体 200 第一导管
101 阀腔 300 第二导管
102 阀口 400 第一降噪件
103 冷媒过口 500 第二降噪件
110 阀座 600 阀针
111 座本体 700 导向套
112 连接凸部 710 导流锥面
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，若本申请实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，若全文中出现的“和/或”的含义为，包括三个并列的方案，以 “A和/或B”为例，包括A方案，或B方案，或A和B同时满足的方案。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
本申请提出一种电子膨胀阀。
在本申请一实施例中，如图1和图2所示，该电子膨胀阀，包括：
阀壳体100，设有阀腔101及与所述阀腔101连通的阀口102，所述阀壳体100包括阀座110，所述阀座110包括座本体111和凸设于所述座本体111外的连接凸部112，所述阀口102自所述座本体111向所述连接凸部112贯穿设置，所述座本体111和所述连接凸部112一体成型；以及
第一导管200，所述第一导管200连接于所述阀壳体100，并通过所述阀口102连通于所述阀腔101。
可以理解，所述阀壳体100还开设有与所述阀腔101连通的冷媒过口103，制冷时，冷媒自冷媒过口103进入阀腔101，而后经阀口102节流后流进第一导管200。在这个过程中，冷媒经阀口102节流后，会在阀口102及第一导管200内产生闪蒸现象，高速冷媒将沿第一导管200的中心区域流动，而冷媒在第一导管200的管壁的附近区域流速较低，由此，在力的作用下，冷媒在管壁附近区域产生回流，这部分回流不仅自身会产生强烈的气动噪声，还会撞击管壁产生机械振动噪音。
首先，在本申请的电子膨胀阀中，座本体111和连接凸部112一体成型。在现有的电子膨胀阀中，阀壳体还包括独立成型的阀芯座，阀口设置于阀芯座，阀座上设置有供阀芯座安装的安装口，阀芯座安装于安装口后再通过焊接的方式与阀座固定连接。本实施例中，一体成型的阀座110的结构稳定性强，更能抵于流经阀口102的冷媒的冲击，而且座本体111的位于冷媒过口103和阀口102之间的壁体表面平滑，不会在冷媒的流路上影响冷媒流动。
在一实施例中，在本申请的电子膨胀阀中，第一导管200的内径大于或等于5mm。现有技术中，电子膨胀阀的导管的内径均为4.95mm，本申请中，通过增大第一导管200的内径，以提供更大的空间供冷媒流动。由此，冷媒的回流也能具有更大的流动区域，有利于减小回流伴随的气动噪声，以及能够在一定程度上减小冷媒的回流对第一导管200的内壁面的撞击，以降低第一导管200的机械振动噪音。优选地，第一导管200的内径大于或等于7mm，能给冷媒的回流提供更大的流动区域，从而能够进一步优化低电子膨胀阀的噪音性能。
在一实施例中，在本申请的电子膨胀阀中，第一导管200的壁厚大于或等于0.5mm。本申请技术方案通过增大第一导管200的壁厚，一方面，能够提升第一导管200抵御回流撞击的能力，另一方面，能够提升第一导管200吸收振动的能力，由此，第一导管200的机械振动噪音得以降低，从而使得电子膨胀阀的噪音性能更优，能够提升用户的使用体验。优选地，第一导管200的壁厚大于或等于0.7mm，其降低机械振动噪音的效果更好。
也即，在本申请中，对第一导管的内径和壁厚中的任一者进行上述优化，均能起到降低噪音的作用，从而能够提升用户的使用体验。
进一步地，在本实施例中，如图1所示，所述电子膨胀阀还包括连接于所述阀壳体100的第二导管300，所述第二导管300通过所述冷媒过口103连通于所述阀腔101，所述第一导管200和所述第二导管300中的至少一者设置有第一降噪件400。可以理解，当本申请的电子膨胀阀处于制冷工况时，冷媒自第二导管300经冷媒过口103流入阀腔101，而后经阀口102节流流入第一导管200；当本申请的电子膨胀阀处于制热工况时，冷媒将自第一导管200经冷媒过口103节流后进入阀腔101，而后经冷媒过口103流入第二导管300。本实施例中，在第一导管200和第二导管300中的至少一者设置有第一降噪件400，第一降噪件400能够降低对应导管内的冷媒流动的噪音，从而进一步优化电子膨胀阀的噪音性能。
进一步地，第一降噪件400设置为多孔结构。如此，第一降噪件400能够对流经对应的导管的冷媒起到整流的作用，以避免冷媒在导管内流动混乱而产生湍流噪音，从而起到降噪的作用。另外，第一降噪件400还可过滤流经导管的冷媒中的异物，防止焊渣、焊皮或者其它杂质堵塞电子膨胀阀，以保障电子膨胀阀的工作性能。当然，在其他实施例中，也可以是，第一降噪件400内仅设置有一降噪孔，降噪孔的内壁呈台阶状设置，如此，同样可起到降噪的作用。
进一步地，在本实施例中，如图1和图2所示，所述第一降噪件400设置为片状结构，所述第一降噪件400的周缘抵接于对应的所述第一导管200或所述第二导管300的内壁面。如此，能够确保导管的冷媒都能流经第一降噪件400，而都接受第一降噪件400的整流作用，以保障第一降噪件400的降噪效果。
进一步地，在本实施例中，如图1所示，所述第一导管200连接于所述连接凸部112，且所述第一导管200内设置有所述第一降噪件400，所述第一降噪件400连接于所述连接凸部112的端面。如此，能够进一步提升第一降噪件400的安装稳定性。
进一步地，在本实施例中，第一降噪件400的周缘凸设有安装凸部，对应的导管的内壁面设置有安装槽，安装槽的自由端贯穿导管的一端设置，以供安装凸部插入。如此，第一降噪件400可通过安装凸部固定于安装槽内，从而实现与导管的固定连接。
不失一般性，本实施例中，如图1和图2所示，第一导管200套设于连接凸部112外，其第一导管200的端部抵于座本体111的外侧，以确保第一导管200和阀座110的连接稳定性，进一步地，第一导管200还可通过焊接的方式与座本体111连接，以提升第一导管200和阀座110的连接稳定性。由此，安装槽需要自第一导管200的端部向内延伸一端距离，安装凸部自安装槽的自由端插入并固定于安装槽的末端，如此，在第一导管200套设于连接凸部112后，第一降噪件400才可抵接于连接凸部112的端部。在进行电子膨胀阀的装配时，可先进行第一降噪件400和第一导管200之间的预装配，通过将安装凸部与安装槽相对位，并调整第一降噪件400的安装方向，以使第一降噪件400的径向与第一导管200的轴向相并行，由于安装凸部与安装槽之间滑动配合，沿这个方向安装，安装凸部能够顺畅地滑至安装槽的末端。而后，可先使第一降噪件400适当倾斜设置，再将第一导管200套设于连接凸部112外，如此，在连接凸部112在第一导管200内抵于第一降噪件400时，连接凸部112能够抵推第一降噪件400，以使其继续倾斜，直至第一导管200的端部抵于座本体111，第一降噪件400也倾斜到位，第一降噪件400的周缘将抵于第一导管200的内壁面，且第一降噪件400也与连接凸部112的端面相抵接。在本实施例中，第一降噪件400、第一导管200和阀座110这三者之间，不仅连接稳定性强，且装配方便快捷，有利于第一降噪件400的可靠安装。
进一步地，在本实施例中，如图1和图2所示，所述阀腔101内设有第二降噪件500，由此，第二降噪件500能够对阀腔101内的冷媒作用，以降低冷媒在阀腔101内流动的噪音，从而进一步优化电子膨胀阀的噪音水平。
进一步地，在本实施例中，所述电子膨胀阀还包括阀针600，所述阀针600可分离地插设于所述阀口102，所述第二降噪件500设置为环状结构，所述第二降噪件500环设于所述阀针600外。如此，在冷媒自阀腔101流向阀口102的流路中以及自阀口102流向阀腔101的流路中，第二降噪件500均可起到降噪的作用。可以理解，在阀口102与阀腔101的连接处，因流道变化剧烈，冷媒容易流动混乱而产生噪音，第二降噪件500环设于阀针600组件外，即可对流经该出的冷媒作用，而降低该处冷媒的噪音。
进一步地，在本实施例中，如图1和图2所示，所述阀腔101内还设有固定连接于所述阀壳体100的导向套700，所述阀针600穿设所述导向套700后插设于所述阀口102，所述第二降噪件500的两端分别抵接于所述导向套700和所述阀壳体100。具体地，第二降噪件500的端部抵接于座本体111而环设于阀口102外。如此，通过导向套700和座本体111在轴向两侧对第二降噪件500进行限位，而使第二降噪件500稳定安装于阀腔101内。进一步地，可在导向套700和座本体111的对应位置设置有限位环槽，以供第二降噪件500的端部卡入；亦或者，第二降噪件500的一端通过焊接的方式固定于座本体111，另一端抵接于导向套700的外壁。这两种方式，均能保障第二降噪件500的安装稳定性，以保证第二降噪件500能作用于阀口102附近的冷媒，从而确保第二降噪件500的降噪效果。
进一步地，在本实施例中，第二降噪件500设置为多孔结构。如此，第二降噪件500能够对流经阀腔101管的冷媒起到整流的作用，以避免冷媒在阀腔101内流动混乱而产生湍流噪音，从而起到降噪的作用。另外，第二降噪件500还可过滤流经阀腔101的冷媒中的异物，防止焊渣、焊皮或者其它杂质堵塞电子膨胀阀的阀口102，以保障电子膨胀阀的工作性能。
进一步地，在本实施例中，如图所示，冷媒过口103设置于阀座110的侧部，导向套700具有相对冷媒过口103的部分，这部分的导向套700外壁面设置有导流锥面710，也即，导向套700设置有相对冷媒过口103的导流锥面710，导流锥面710朝向阀口102所在侧设置。一般而言，当电子膨胀阀安装于制冷设备后，第一导管200所在侧即为电子膨胀阀的下方。由此，当电子膨胀阀处于制冷工况下，冷媒自电子膨胀阀侧方的第二导管300进入，自电子膨胀的下方的第一导管200流出；当电子膨胀阀处于制热工况下，冷媒自电子膨胀阀下方的第一导管200进入，自电子膨胀的侧方的第二导管300流出。不管是在冷媒自冷媒过口103向阀口102流动的过程中还是自阀口102流向冷媒过口103的过程中，导流锥面710均能起到引导冷媒的作用，以降低。不同于制冷工下，由于重力的存在，冷媒即具有一定的向阀口102流动的趋势，当电子膨胀阀处于制热工况时，只能通过导流锥面710的引导将经阀口102流入阀腔101的冷媒引导至冷媒过口103。因此，导流锥面710的设置能够起到引导冷媒流动的工作，以保障电子膨胀阀的工作性能，特别地，能够显著改善电子膨胀阀在制热工况下，其阀腔101内部的冷媒流动状况，以避免冷媒在阀腔101流动混乱，而影响电子膨胀阀的工作性能。需要说明的是，第二降噪件500的端部应抵接于导流锥面710靠近阀座110底部的一侧，而使导流锥面710具有显露于第二降噪件500的部分，以避免对导流锥面710的导流效果产生影响。
本申请还提出一种制冷设备，该制冷设备包括电子膨胀阀，该电子膨胀阀的具体结构参照上述实施例，由于本制冷设备采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。其中，制冷设备可以为空调器、冷冻机、冰箱、热泵热水器等。
以上所述仅为本申请的可选实施例，并非因此限制本申请的专利范围，凡是在本申请的发明构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (10)

  1. 一种电子膨胀阀，其中，包括：
    阀壳体，设有阀腔及与所述阀腔连通的阀口，所述阀壳体包括阀座，所述阀座包括座本体和凸设于所述座本体外的连接凸部，所述阀口自所述座本体向所述连接凸部贯穿设置，所述座本体和所述连接凸部一体成型；以及
    第一导管，所述第一导管连接于所述阀座，并通过所述阀口连通于所述阀腔；
    所述第一导管的内径大于或等于5mm；和/或，所述第一导管的壁厚大于或等于0.5mm。
  2. 如权利要求1所述的电子膨胀阀，其中，所述阀壳体还开设有与所述阀腔连通的冷媒过口，所述电子膨胀阀还包括连接于所述阀壳体的第二导管，所述第二导管通过所述冷媒过口连通于所述阀腔，所述第一导管和所述第二导管中的至少一者设置有第一降噪件。
  3. 如权利要求2所述的电子膨胀阀，其中，所述第一降噪件设置为片状结构，所述第一降噪件的周缘抵接于对应的所述第一导管或所述第二导管的内壁面。
  4. 如权利要求2所述的电子膨胀阀，其中，所述第一导管连接于所述连接凸部，且所述第一导管内设置有所述第一降噪件，所述第一降噪件连接于所述连接凸部的端面。
  5. 如权利要求2所述的电子膨胀阀，其中，所述第一降噪件设置为多孔结构。
  6. 如权利要求1所述的电子膨胀阀，其中，所述阀腔内设有第二降噪件。
  7. 如权利要求6所述的电子膨胀阀，其中，所述电子膨胀阀还包括阀针，所述阀针可分离地插设于所述阀口，所述第二降噪件设置为环状结构，所述第二降噪件环设于所述阀针外。
  8. 如权利要求7所述的电子膨胀阀，其中，所述阀腔内还设有固定连接于所述阀壳体的导向套，所述阀针穿设所述导向套后插设于所述阀口，所述第二降噪件的两端分别抵接于所述导向套和所述阀壳体。
  9. 如权利要求6所述的电子膨胀阀，其中，所述第二降噪件设置为多孔结构。
  10. 一种制冷设备，其中，包括权利要求1至9任一项所述的电子膨胀阀。
PCT/CN2022/079338 2022-01-26 2022-03-04 电子膨胀阀和制冷设备 WO2023142224A1 (zh)

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