WO2019037510A1 - 电动阀 - Google Patents

电动阀 Download PDF

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Publication number
WO2019037510A1
WO2019037510A1 PCT/CN2018/089858 CN2018089858W WO2019037510A1 WO 2019037510 A1 WO2019037510 A1 WO 2019037510A1 CN 2018089858 W CN2018089858 W CN 2018089858W WO 2019037510 A1 WO2019037510 A1 WO 2019037510A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric valve
rib
casing
housing
side wall
Prior art date
Application number
PCT/CN2018/089858
Other languages
English (en)
French (fr)
Inventor
蓝垚锋
陆颖翀
张荣荣
Original Assignee
杭州三花研究院有限公司
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 杭州三花研究院有限公司 filed Critical 杭州三花研究院有限公司
Priority to JP2020511295A priority Critical patent/JP6936917B2/ja
Priority to EP18849193.0A priority patent/EP3674588A4/en
Priority to KR1020207007657A priority patent/KR102262316B1/ko
Priority to US16/641,048 priority patent/US11193606B2/en
Publication of WO2019037510A1 publication Critical patent/WO2019037510A1/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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/10—Welded housings
    • F16K27/102—Welded housings for 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/10—Welded housings
    • 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
    • F16K27/12—Covers for housings
    • 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
    • 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
    • F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
    • 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 invention relates to the field of fluid control, and in particular to a flow control device.
  • the electric valve includes at least a circuit board assembly.
  • the circuit board assembly In order to prevent the circuit board assembly from being corroded, it is necessary to seal the circuit board assembly. How to provide an electric valve for sealing the circuit board assembly is an urgent problem to be solved.
  • An object of the present invention is to provide an electric valve which is simple in structure and improves the sealing reliability of a circuit board assembly.
  • an embodiment of the present invention adopts the following technical solution: an electric valve including a stator assembly, a rotor, a sleeve, and a valve assembly, the stator assembly being disposed around the rotor, the sleeve isolating the stator An assembly and the rotor, the electric valve is formed with a valve port, the rotor being capable of driving a valve assembly to move relative to the valve port, wherein the electric valve further comprises a casing and a circuit board assembly, the stator assembly Electrically connecting with the circuit board assembly, the circuit board assembly is disposed in a cavity body formed by the casing, the casing includes a casing and a cover body, and the casing and the cover body are not integrally formed.
  • a sealing ring is disposed at a joint of the housing and the cover body, the sealing ring is pressed between the housing and the cover body, and the cover body and the housing are fixedly connected by welding.
  • An electric valve includes a stator assembly, a rotor, a sleeve, and a valve assembly, the stator assembly being disposed around the rotor, the sleeve isolating the stator assembly and the rotor, and the electric valve is formed with a valve port,
  • the rotor is capable of driving the valve assembly to move relative to the valve port, wherein the electric valve further comprises a casing and a circuit board assembly, and the stator assembly and the circuit board assembly are electrically connected to the circuit board assembly
  • the casing body formed by the casing, the casing comprises a casing and a cover body, the casing and the cover body are not integrally formed, and the cover body and the casing are fixedly connected by welding.
  • the casing of the electric valve comprises two parts of the casing and the cover body respectively, which facilitates the forming of the mold, and the cover body and the casing are fixedly connected by welding.
  • Such a sealing structure is advantageous for improving the sealing of the circuit board assembly, the structure is simple, and the process is simple.
  • Figure 1 is a schematic view showing the structure of a first embodiment of the electric valve of the present invention
  • Figure 2 is a perspective view showing the structure of the cover body of Figure 1;
  • Figure 3 is a perspective view showing the combination of the housing and the stator assembly of Figure 1;
  • Figure 4 is a perspective view of the sealing ring of Figure 1;
  • Figure 5 is a partial enlarged view of the portion A of Figure 1;
  • Figure 6 is a schematic structural view of a second embodiment of the electric valve of the present invention.
  • Figure 7 is a partial enlarged view of a portion B of Figure 6;
  • Fig. 8 is a schematic structural view of the cover body of Fig. 6.
  • the electric valve in this embodiment is mainly used in a refrigeration system for regulating the flow rate of a working medium in a refrigeration system.
  • the electric valve 100 includes a stator assembly 10, a rotor 20, a circuit board assembly 30, a sleeve 40, a valve assembly, and a valve body 50; wherein the stator assembly 10 includes a coil 11 and a bobbin 12, the valve assembly including The spool 60; the electric valve further includes a transmission 70; the valve body 50 forms a valve port 51 or a member fixedly formed with the valve port 51, the first passage 52 and the second passage 53; in the embodiment, the stator assembly 10 surrounds the rotor 20 The stator assembly 10 is disposed at the periphery of the rotor 20, and the sleeve 40 isolates the stator assembly 10 and the rotor 20.
  • the coil 11 of the stator assembly 10 and the circuit board assembly 30 are electrically connected, and the rotor 20 can drive the spool 60 to move.
  • the movement can be relatively close to or away from the valve port 51, thereby changing the communication cross-sectional area of the first passage 52 and the second passage 53, thereby adjusting the flow rate of the system in which the first passage 52 and the second passage 53 are located.
  • valve body, the stator assembly, and the circuit board defining the electric valve are arranged in the axial direction, and the extension direction of the circuit board is the radial direction; that is, the movement direction of the spool 60 is defined as the axial direction, the stator assembly and the rotor are The arrangement direction is radial, and the radial direction is perpendicular to the axial direction.
  • the electric valve 100 includes a casing 80, and the circuit board assembly 30 is disposed in the casing body formed by the casing 80.
  • the casing 80 includes a casing 1 and a cover 2, and the casing and the cover are fixedly connected, and the casing 1 and the cover 2 are All of the injection molding materials, the housing 1 and the cover 2 are not integrally formed, that is, the housing 1 and the cover 2 are separately formed.
  • the housing can be integrally formed with other parts of the electric valve other than the cover, such as a stator assembly.
  • the cover body may be integrally formed with other components of the electric valve other than the housing.
  • the inner cavity of the cartridge includes a housing inner cavity.
  • the housing 1 and the cover 2 need to be sealed.
  • the connection between the housing 1 and the cover 2 is provided with a sealing ring 3, and the cover 2 and the housing 1 pass ultrasonic waves.
  • the welding fixed connection such a sealing structure can meet the sealing requirements, the structure is simple, the process is simple; of course, the sealing ring can be omitted, but the cover body 2 and the housing 1 are fixedly connected by ultrasonic welding; There is also no need to set a solder fixed structure, the structure is simple, and the welding is convenient.
  • both the cover 2 and the housing 1 are not limited to the above-mentioned ultrasonic welding fixing, and may be other forms of welding as long as the cover 2 and the shell can be realized.
  • the fixed connection of the body 1 can achieve the above technical effects.
  • the cover body 2 includes a first limiting portion and a first fixing portion.
  • the housing 1 includes a second limiting portion and a second fixing portion.
  • the sealing ring 3 is disposed on the first limiting portion and the second limiting portion.
  • the first limiting portion and the second limiting portion are pressed between the portions, and the first fixing portion and the second fixing portion are welded and form a fixed connecting portion.
  • the fixed connecting portion is disposed closer to the outer edge of the electric valve than the sealing ring. That is, the fixed connection portion is located at the outer circumference of the sealing ring; thus, the sealing ring can be pressed by welding the cover body and the housing to improve the sealing property, and the fixing connection portion is disposed closer to the outer edge to further improve the sealing property and the connection reliability.
  • the electric valve 100 includes an injection molded body formed by injection molding an injection molded insert including a coil 11 and a bobbin 12, and the injection molded body is formed with a stator assembly 10 at a periphery of the coil 11 and the bobbin 12.
  • the insulating layer 101 can prevent the stator assembly 10 from being corroded by the working medium or the air.
  • the molded body further forms the housing 1 such that the housing 1 is integrally formed with the insulating layer 101 of the stator assembly 10, and the thus formed housing 1 is formed.
  • the connection to the stator assembly 10 is more reliable, while the connection structure is simpler, and it is also advantageous to improve the sealing between the housing 1 and the stator assembly 10.
  • the electric valve 100 further includes a connector portion 90.
  • the connector portion 90 includes a pin 91 and a connector housing 92.
  • the injection molded insert further includes a pin 91.
  • the injection molded body further includes a plug housing 92.
  • One end of the pin 91 extends. In the inlet socket, the other end of the pin 91 extends into the casing 80 to be electrically connected to the circuit board assembly 30. This eliminates the need to provide a connection structure between the connector and the casing, so that the overall structure is simpler and the connection is more reliable.
  • the cover body 2 includes a base body 201 and a connecting portion 202.
  • the connecting portion 202 and the base body 201 are integrally injection molded, and the cover body 2 is connected to the housing 1 through the connecting portion 202, fixed and sealed.
  • the connecting portion 202 includes a first limiting portion 21 that defines a position of the sealing ring 3 relative to the cover 2, and a first fixing portion 22 that defines a welded fixed position with the housing 1.
  • the first limiting portion 21 includes a first mounting portion 211 and a first abutting portion 212.
  • the sealing ring 3 is sleeved on the outer circumference of the first mounting portion 211, and the sealing ring 3 is pressed by the first abutting portion 212.
  • the housing 1 In the housing 1.
  • the first mounting portion 211 is an annular protrusion, and the inner circumference of the annular protrusion is disposed around the base.
  • the first mounting portion 211 can also be a discontinuous protruding ring, which can limit the sealing ring 3 relative to the cover.
  • the structure of the first mounting portion 211 of the radial position of the body 2 is within the scope of the present invention.
  • the first abutting portion 212 is disposed around the outer circumference of the first mounting portion 211 , and the first abutting portion 212 is for defining an axial position of the sealing ring 3 with respect to the cover 2 .
  • the seal ring 3 is sleeved on the outer circumference of the first mounting portion 211 , and the seal ring 3 is pressed against the casing 1 by the first abutting portion 212 .
  • the width of the first abutting portion 212 is slightly larger than the distance between the inner and outer diameters of the sealing ring 3, that is, the distance between the outer circumference of the first mounting portion 211 and the first fixing portion 22 is slightly larger than the distance between the inner and outer diameters of the sealing ring 3, This does not hinder the compression deformation of the seal ring 3.
  • the sealing ring 3 is a pre-formed part, and the sealing ring 3 to be formed is sleeved on the first mounting portion 211 and pressed against the housing 1 by the first abutting portion 212; of course, the sealing ring 3 can also be quickly passed.
  • the solidified glue is applied between the first abutting portion 212 and the first mounting portion 211.
  • the first fixing portion 22 is disposed around the first abutting portion 212.
  • the first fixing portion 22 includes a groove portion 221
  • the second fixing portion 12 is a convex portion, which facilitates positioning of the cover body and the groove and Improve sealing.
  • the housing 1 includes a side wall 101 and a bottom portion 102, and the side wall 101 and the bottom portion 102 form a housing interior.
  • the side wall 101 includes a step portion 103 formed from a free end of the side wall 101 toward the bottom portion 102.
  • the step portion 103 includes a stepped surface 104 and a side surface 105.
  • the stepped surface 104 extends substantially in the radial direction of the electric valve, and the side surface 105 extends substantially along the axial direction of the electric valve, and the actual product may have certain manufacturing tolerances.
  • the second limiting portion 11 and the second fixing portion 12 are formed on the side wall 101, the second limiting portion 11 includes a second abutting portion 111, and the second abutting portion 111 includes a stepped surface 104, a first abutting portion 212 and
  • the step surface 104 presses the sealing ring 3, so that the sealing ring 3 is axially deformed, the step surface 104 is annular, and the width of the step surface 104 is slightly larger than the distance between the inner and outer diameters of the sealing ring 3, so as to facilitate the sealing ring 3 after being pressed. The deformation.
  • the second fixing portion 12 includes a convex portion 121 formed from the free end of the side wall 101.
  • the inner side surface of the convex portion 121 is disposed in alignment with the side surface 105 of the step portion 103, so that the assembly of the housing 1 and the cover body 2 is facilitated.
  • a gap is formed between the inner and outer side surfaces of the portion 121 and the groove portion of the first fixing portion 22 for convenient installation, and a welding overflow groove 210 is formed at the same time.
  • the welding overflow groove can accommodate excess material, increase welding contact area, and improve welding. Connection strength.
  • the second fixing portion 12 further includes a rib portion 122 disposed at a free end of the boss portion 121.
  • the rib portion 122 gradually decreases from the free end of the boss portion 121 to the top portion of the rib portion 122, that is, the rib portion 122 and the bulge portion
  • the portion 121 is integrally formed.
  • the cross-sectional area of the rib portion 122 gradually decreases from the connecting portion of the rib portion 122 and the boss portion 121 to the free end of the rib portion 122, and on the one hand, the rib portion 122 and the convex portion are advantageously improved.
  • connection strength of the rising portion 121 on the other hand, the top of the rib portion 122 is in contact with the first fixing portion 22 of the cover body 2. Since the cross section of the top portion of the rib portion 122 is small, the energy required for the rib portion 122 to melt and be fixed by welding is increased. Small, it is conducive to energy saving, and also helps to reduce the impact on the cover and other parts of the housing.
  • the second fixing portion 12 and the first fixing portion 22 are welded and fixed at the rib portion 122, and the rib portion 122 is melted after welding, and the material of the excess rib portion 122 enters the welding overflow groove; that is, at least part of the rib portion 122 melts and enters the overflow portion. Feed trough.
  • the bottom portion 102 is formed with a partition portion 106.
  • the partition portion 106 isolates the circuit board assembly 30 and the sleeve 40, so that when the electric valve is operated, the dewdrop of the sleeve 40 due to the change of cold and heat can enter the box body 80, thereby further improving the circuit board.
  • the tightness of the assembly 30, which in turn increases the useful life of the circuit board assembly.
  • the circuit board assembly 30 includes a circuit board 301 and an electrical component.
  • the circuit board 301 is provided with a through hole, and the isolation portion 106 passes through the through hole, so that the circuit board can be as close as possible to the stator assembly, and the circuit board and the stator assembly are connected through the connection terminal, so that Reducing the length of the terminals helps to improve the reliability and stability of the connection.
  • the sealing ring 3 is assembled with the cover 2, and the combination of the cover 2 and the sealing ring 3 is mounted to the housing 1, and the outer circumference of the first mounting portion 211 of the cover 2 is limited to the inner circumference of the side wall 101.
  • the convex portion 121 of the second fixing portion 12 is inserted into the groove portion 221 of the first fixing portion 22, and the overflow groove 210 is formed between the convex portion 121 and the groove portion 221, and the rib portion 122 is melted at the first fixing after ultrasonic welding.
  • a welded joint portion is formed between the portion 22 and the second fixing portion 12, and the first abutting portion 212 and the second abutting portion 111 press and deform the seal ring 3 to form a seal portion, and the outer cover body 2 at the outer edge of the seal portion
  • the housing 1 forms a limiting portion, and the limiting portion includes a sidewall free end 108 of the housing 1 and an outer edge portion 208 of the cover 2.
  • the limiting portion is used for limiting the relative distance between the soldering cover 2 and the housing 1 to ensure the relative distance between the soldering cover 2 and the housing 1
  • the seal compresses the amount of deformation to ensure sealing.
  • the cover body 2 includes a base body 201 and a connecting portion 202.
  • the connecting portion 202 includes an annular protrusion 203.
  • the annular protrusion 203 is formed from the base 201.
  • the annular protrusion 203 is formed with a mounting groove 204 on the outer circumference.
  • the first limiting portion 21 includes a first mounting portion 211 and a first abutting portion 212.
  • the first mounting portion 211 includes an annular protrusion 203 integrally formed with the base body 201 of the cover body and a mounting groove provided in the annular protrusion.
  • the sealing ring 3 is received in the mounting groove 204, the outer edge of the sealing ring 3 protrudes from the outer wall of the annular protrusion, the bottom surface of the mounting groove 204 forms a first abutting portion 212, and the two side walls of the mounting groove 204 are sealed
  • the ring 3 is limited, the annular protrusion 203 of the cover 2 is limited by the stepped surface 104 of the housing 1 , and the side surface 105 of the step portion forms a second abutting portion 111 , and the second abutting portion 111 and the first abutting portion 212 .
  • the sealing ring 3 is pressed and deformed to form a sealing portion.
  • the cover body 2 and the housing 1 form a sealing portion on the side surface, that is, a sealing portion is formed in the radial direction of the electronic expansion valve, so that the sealing ring 3 and the cover body
  • the intermediate limit is better, and the seal ring 3 is not caused by insufficient pressure of the welded cover 2 and the housing 1. Deformation caused by insufficient or excessive now tightness between the lid and the housing is reduced.
  • the housing 1 includes a side wall 101 and a bottom portion 102, and the side wall 101 and the bottom portion 102 form a housing inner cavity.
  • the side wall 101 includes a step portion 103 which is formed from a free end of the side wall 101 toward the bottom portion 102, and the step portion 103 includes a stepped surface 104 and a side surface 105.
  • the second abutting portion 111 includes a side surface 105.
  • the sealing ring 3 is pressed between the first abutting portion 212 and the side surface 105.
  • the stepped surface 104 is annular, and the stepped surface 104 is disposed in contact with the annular protrusion 203 of the cover 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Valve Housings (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

一种电动阀(100)，包括定子组件(10)、转子(20)、线路板组件(30)、套管(40)以及阀组件，定子组件围绕转子设置，套管隔离定子组件和转子，定子组件和线路板组件电连接，电动阀成形有阀口(51)，转子能够带动阀组件相对阀口运动，电动阀还包括盒体(80)，线路板组件设置于盒体内，盒体包括壳体(1)和盖体(2)，壳体和盖体的连接处设置有密封圈(3)，密封圈被压紧于壳体和盖体之间，盖体和壳体通过焊接固定连接；这样的电动阀结构简单并提高线路板组件的密封可靠性。

Description

电动阀
本申请要求于2017年08月24日提交中国专利局、申请号为201710737711.0、发明名称为“电动阀”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
本发明涉及一种流体控制领域，具体涉及一种流量控制装置。
背景技术
随着对控制精度的要求的提高，电动阀作为流量调节装置逐渐被采用。为了方便控制，电动阀至少包括线路板组件，为了防止线路板组件被腐蚀，需要将线路板组件进行密封，如何提供一种将线路板组件密封的电动阀是亟待解决的问题。
发明内容
本发明的目的在于提供一种结构简单并提高线路板组件的密封可靠性的电动阀。
为实现上述目的，本发明的实施例采用如下技术方案：一种电动阀，包括定子组件、转子、套管以及阀组件，所述定子组件围绕所述转子设置，所述套管隔离所述定子组件和所述转子，所述电动阀成形有阀口，所述转子能够带动阀组件相对所述阀口运动，其特征在于：所述电动阀还包括盒体和线路板组件，所述定子组件和所述线路板组件电连接所述线路板组件设置于所述盒体形成的盒体内腔，所述盒体包括壳体和盖体，所述壳体和所述盖体非一体成形，所述壳体和所述盖体的连接处设置有密封圈，所述密封圈被压紧于所述壳体和所述盖体之间，所述盖体和所述壳体通过焊接固定连接。
一种电动阀，包括定子组件、转子、套管以及阀组件，所述定子组件围绕所述转子设置，所述套管隔离所述定子组件和所述转子，所述电动阀成形有阀口，所述转子能够带动阀组件相对所述阀口运动，其特征在于：所述电动阀还包括盒体和线路板组件，所述定子组件和所述线路板组件电连接所述线路板组件设置于所述盒体形成的盒体内腔，所述盒体包括壳体 和盖体，所述壳体和所述盖体非一体成形，所述盖体和所述壳体通过焊接固定连接。
电动阀的盒体包括壳体和盖体两部分分别成形，方便模具成形，盖体和壳体通过焊接固定连接，这样的密封结构，有利于提高线路板组件的密封，结构简单，工艺简单。
附图说明
图1是本发明的电动阀的第一种实施方式的结构示意图；
图2是图1中的盖体的立体结构示意图；
图3是图1中的壳体与定子组件的组合的立体结构示意图；
图4是图1中密封圈的立体结构示意图；
图5是图1中A部的局部放大示意图；
图6是本发明的电动阀的第二种实施方式的结构示意图；
图7是图6中的B部的局部放大示意图；
图8是图6中的盖体的结构示意图。
具体实施方式
下面结合附图和具体实施例对本发明作进一步说明：
本实施例中的电动阀主要应用于制冷系统中，用于调节制冷系统中的工作介质的流量。
结合参见图1和图6，电动阀100包括定子组件10、转子20、线路板组件30、套管40、阀组件以及阀体50；其中定子组件10包括线圈11和线圈骨架12，阀组件包括阀芯60；电动阀还包括传动装置70；阀体50成形阀口51或固定成形有阀口51的部件、第一通道52以及第二通道53；本实施例中，定子组件10围绕转子20设置，即定子组件10设置于转子20的外围，套管40隔离定子组件10和转子20，定子组件10的线圈11和线路板组件30电连接，转子20能够带动阀芯60运动，阀芯60能够相对靠近或远离阀口51运动，进而使得第一通道52和第二通道53的连通截面积发生变化，进而调节第一通道52和第二通道53所在的系统的流量。为了方便描述，定义电动阀的阀体、定子组件以及电路板的排布方向为轴 向，线路板的延展方向为径向；即定义阀芯60的运动方向为轴向，定子组件和转子的排布方向为径向，径向与轴向垂直设置。
电动阀100包括盒体80，线路板组件30设置于盒体80形成的盒体内腔，盒体80包括壳体1和盖体2，壳体和盖体固定连接，壳体1和盖体2均为注塑材料，壳体1和盖体2非一体成形，即壳体1和盖体2分别单独成形，当然壳体可以与盖体以外的电动阀的其他零部件一体成形，比如定子组件，盖体也可以与壳体以外的电动阀的其他零部件一体成形。由以上描述可知，盒体内腔包括壳体内腔。为了防止线路板组件30被腐蚀，壳体1和盖体2需要密封设置，本实施例中，壳体1和盖体2的连接处设置有密封圈3，盖体2和壳体1通过超声波焊接固定连接，这样的密封结构，能够满足密封的要求，结构简单，工艺简单；当然也可以不设置密封圈，而是盖体2和壳体1通过超声波焊接固定连接；这样不需要额外增加焊料，也不需要设置焊料的固定结构，结构简单，焊接方便。
依据上文内容所描述，本领域内技术人员可以理解，本文中盖体2和壳体1二者不局限于上述超声波焊接固定，还可以为其他形式的焊接，只要能实现盖体2和壳体1的固定连接，实现上述技术效果即可。
以下实施例中，盖体2包括第一限位部和第一固定部，壳体1包括第二限位部和第二固定部，密封圈3设置于第一限位部和第二限位部之间并被第一限位部和第二限位部压紧，第一固定部和第二固定部之间焊接并形成固定连接部，固定连接部比密封圈靠近电动阀的外缘设置，即固定连接部位于密封圈外周；这样可以通过焊接盖体和壳体压紧密封圈，提高密封性，同时固定连接部更靠近外缘设置能够进一步提高密封性和连接可靠性。
本实施例中，电动阀100包括注塑体，注塑体以包括线圈11和线圈骨架12等零部件为注塑嵌件经过注塑形成，注塑体在线圈11和线圈骨架12的外围成形有定子组件10的绝缘层101，可以防止定子组件10被工作介质或者空气腐蚀，本实施例中，注塑体还形成壳体1，这样壳体1与定子组件10的绝缘层101一体成形，这样成形的壳体1与定子组件10的连接更可靠，同时连接结构更加简单，还有利于提高壳体1与定子组件10之间的密封性。
电动阀100还包括接插部90，接插部90包括插针91和接插壳体92， 注塑嵌件还包括插针91，注塑体还包括接插壳体92，插针91的一端伸入接插口，插针91的另一端伸入盒体80可以与线路板组件30电连接；这样不需设置接插件与壳体的连接结构，使得整体结构更加简单，连接也更加可靠。
参见图2，盖体2包括基体201以及连接部202，连接部202和基体201一体注塑成形，盖体2通过连接部202与壳体1连接、固定并密封。连接部202包括第一限位部21和第一固定部22，第一限位部21限定密封圈3相对于盖体2的位置，第一固定部22限定与壳体1的焊接固定位置。第一限位部21包括第一安装部211和第一抵接部212，本实施例中，密封圈3套设于第一安装部211外周，密封圈3通过第一抵接部212压紧于壳体1。本实施例中，第一安装部211为环形凸起，环形凸起的内周围绕基体设置，当然第一安装部211也可以为间断的凸起环，能够起到限制密封圈3相对于盖体2的径向位置的第一安装部211的结构均在本发明限定的范围内。第一抵接部212围绕第一安装部211外周设置，第一抵接部212用于限定密封圈3相对于盖体2的轴向位置。密封圈3套设于第一安装部211的外周，密封圈3通过第一抵接部212压紧于壳体1。第一抵接部212的宽度略大于密封圈3的内外径之间的距离，即第一安装部211的外周距离第一固定部22的距离略大于密封圈3的内外径之间的距离，这样不会妨碍密封圈3的压缩变形。本实施例中密封圈3为预先成形件，即将成形的密封圈3套设于第一安装部211，并通过第一抵接部212压于壳体1；当然密封圈3也可以通过能够快速凝固的胶涂敷于第一抵接部212和第一安装部211之间形成。
第一固定部22环绕于第一抵接部212设置；本实施例中第一固定部22包括凹槽部221，第二固定部12为凸起部，有利于盖体和凹槽的定位以及提高密封性。
结合参见图1和图3，壳体1包括侧壁101和底部102，侧壁101与底部102形成壳体内腔。侧壁101包括台阶部103，台阶部103为自侧壁101的自由端向底部102沉台形成，台阶部103包括台阶面104和侧面105，台阶面104大致沿电动阀的径向延伸，侧面105大致沿电动阀的轴向延伸，实际产品可能有一定的制造公差。第二限位部11和第二固定部12成形于 侧壁101，第二限位部11包括第二抵接部111，第二抵接部111包括台阶面104，第一抵接部212和台阶面104压紧密封圈3，使得密封圈3产生轴向变形，台阶面104呈环形，台阶面104的宽度略大于密封圈3内外径之间的距离，以利于密封圈3被压紧后的变形。
第二固定部12包括自侧壁101的自由端形成的凸起部121，凸起部121内侧面与台阶部103的侧面105对齐设置，这样方便壳体1和盖体2的组装，凸起部121的内外侧面与第一固定部22的凹槽部之间间隔一定的间隙，方便安装，同时形成焊接溢料槽210，焊接溢料槽可以容纳多余的材料，增加焊接接触面积，提高焊接的连接强度。
第二固定部12还包括设置于凸起部121的自由端的筋部122，筋部122自凸起部121的自由端起至筋部122的顶部截面逐渐减小，即筋部122与凸起部121一体成形，沿电动阀的径向，筋部122的截面积自筋部122与凸起部121的连接部至筋部122的自由端逐渐减小，一方面有利提高筋部122与凸起部121的连接强度，另一方面筋部122的顶部与盖体2的第一固定部22接触，由于筋部122的顶部的截面较小，达到筋部122融化并焊接固定需要的能量越小，有利于节能，还有利于减小对盖体和壳体的其他部分的影响。
第二固定部12与第一固定部22在筋部122处焊接固定，筋部122在焊接后融化，多余的筋部122的材料进入焊接溢料槽；即至少部分筋部122融化后进入溢料槽。
底部102成形有隔离部106，隔离部106隔离线路板组件30和套管40，这样当电动阀工作时，可以隔离套管40由于冷热变化导致的露珠进入盒体80内，进一步提高线路板组件30的密封性，进而提高线路板组件的使用寿命。线路板组件30包括电路板301和电元器件，电路板301设置有通孔，隔离部106穿过通孔，使得电路板可以尽量靠近定子组件，电路板与定子组件通过接线端子连接，这样可以减少接线端子的长度，有利于提高连接的可靠性和稳定性。
参见图5，密封圈3与盖体2组装，将盖体2与密封圈3的组合与壳体1安装，将盖体2的第一安装部211的外周限位于侧壁101的内周，第二固定部12的凸起部121插入第一固定部22的凹槽部221，凸起部121 和凹槽部221之间形成溢料槽210，超声波焊接后筋部122融化在第一固定部22和第二固定部12之间形成焊接连接部，第一抵接部212和第二抵接部111将密封圈3压紧并变形形成密封部，在密封部的外缘盖体2和壳体1形成有限位部，限位部包括壳体1的侧壁自由端108以及盖体2外缘部208，限位部用于限制焊接后盖体2和壳体1的相对距离，保证密封圈压缩变形量进而保证密封性。
图6为电子膨胀阀的第二种实施方式的结构示意图；结合参见图6至图8，与第一种实施方式的主要区别在于密封圈的限位方式。本实施例中，盖体2包括基体201和连接部202，连接部202包括环形凸起203，环形凸203起自基体201凸出形成，环形凸起203外周成形有安装槽204；本实施例中，第一限位部21包括第一安装部211和第一抵接部212，第一安装部211包括与盖体的基体201一体成形的环形凸起203以及设置于环形凸起的安装槽204，密封圈3容纳于安装槽204内，密封圈3的外缘凸出于环形凸起的外壁设置，安装槽204的底面形成第一抵接部212，安装槽204的两侧壁对密封圈3限位，盖体2的环形凸起203通过壳体1的台阶面104限位，台阶部的侧面105形成第二抵接部111，第二抵接部111和第一抵接部212将密封圈3压紧变形并形成密封部，本实施方式中，盖体2和壳体1在侧面形成密封部，即在电子膨胀阀的径向形成密封部，这样密封圈3与盖体之间限位更好，同时不会由于焊接盖体2和壳体1压力不够而导致密封圈3的形变不够或者过量而今而导致盖体和壳体之间的密封性降低。
本实施例中，结合参见图3，壳体1包括侧壁101和底部102，侧壁101与底部102形成壳体内腔。侧壁101包括台阶部103，台阶部103为自侧壁101的自由端向底部102沉台形成，台阶部103包括台阶面104和侧面105。第二抵接部111包括侧面105，密封圈3压紧于第一抵接部212和侧面105之间，台阶面104呈环形，台阶面104与盖体2的环形凸起203接触设置。
需要说明的是：以上实施例仅用于说明本发明而并非限制本发明所描述的技术方案，尽管本说明书参照上述的实施例对本发明已进行了详细的说明，但是，本领域的普通技术人员应当理解，所属技术领域的技术人员 仍然可以对本发明进行修改或者等同替换，而一切不脱离本发明的精神和范围的技术方案及其改进，均应涵盖在本发明的权利要求范围内。

Claims (10)

  1. 一种电动阀，包括定子组件、转子、套管以及阀组件，所述定子组件围绕所述转子设置，所述套管隔离所述定子组件和所述转子，所述电动阀成形有阀口，所述转子能够带动阀组件相对所述阀口运动，其特征在于：所述电动阀还包括盒体和线路板组件，所述定子组件和所述线路板组件电连接，所述线路板组件设置于所述盒体形成的盒体内腔，所述盒体包括壳体和盖体，所述壳体和所述盖体非一体成形，所述电动阀还包括密封圈，所述密封圈被压紧于所述壳体和所述盖体之间，所述盖体和所述壳体通过焊接固定连接。
  2. 根据权利要求1所述的电动阀，其特征在于：所述盖体包括第一限位部和第一固定部，所述壳体包括第二限位部和第二固定部，所述密封圈设置于所述第一限位部和所述第二限位部之间并被所述第一限位部和所述第二限位部压紧，所述第一固定部和所述第二固定部之间焊接并形成固定连接部，所述固定连接部位于所述密封圈外周。
  3. 根据权利要求2所述的电动阀，其特征在于：所述第一限位部包括第一安装部和第一抵接部，所述第一安装部包括环形凸起，所述第一抵接部设置于所述第一安装部的外周，所述密封圈套设于所述第一安装部的外周，所述密封圈通过所述第一抵接部轴向压紧于所述第二限位部；所述壳体包括侧壁和底部，所述侧壁与所述底部形成壳体内腔，所述盒体内腔包括所述壳体内腔；所述侧壁成形有台阶部，所述台阶部自所述侧壁的自由端向所述底部凹陷形成，所述台阶部包括台阶面和侧面，所述第二限位部包括第二抵接部，所述第二抵接部包括所述台阶面，所述密封圈被所述第一抵接部和所述台阶面压紧。
  4. 根据权利要求2所述的电动阀，其特征在于：所述第一限位部包括第一安装部和第一抵接部，所述第一安装部包括环形凸起和安装槽，所述密封圈容置于所述安装槽，所述安装槽的底部形成所述第一抵接部，所述密封圈通过所述第一抵接部径向压紧于所述第二限位部；所述壳体包括侧壁和底部，所述侧壁与所述底部形成壳体内腔，所述第二限位部包括第二抵接部，所述侧壁成形有台阶部，所述台阶部自所述侧壁的自由端向所述 底部凹陷形成，所述台阶部包括台阶面和侧面，所述第二抵接部包括所述侧面，所述密封圈被所述第一抵接部和所述侧面压紧。
  5. 根据权利要求3或4所述的电动阀，其特征在于：所述第一固定部设置于所述第一限位部的径向外周，所述第一固定部包括凹槽部，所述第二固定部包括成形于所述侧壁的凸起部，所述凸起部围绕所述第二限位部设置，所述凸起部插入所述凹槽部并固定连接。
  6. 根据权利要求5所述的电动阀，其特征在于：所述第二固定部还包括设置于所述凸起部的自由端的筋部，所述筋部与所述凸起部一体成形，沿所述电动阀的径向，所述筋部的截面积自所述筋部与所述凸起部的连接部至所述筋部的自由端逐渐减小，所述第二固定部与所述第一固定部在所述筋部处焊接固定，焊接后，至少部分所述筋部融化。
  7. 根据权利要求6所述的电动阀，其特征在于：所述凸起部和所述凹槽部的侧壁之间形成环形间隙，所述环形间隙为溢料槽，融化的部分所述筋部进入所述溢料槽，所述溢料槽的体积大于等于所述筋部的体积。
  8. 一种电动阀，包括定子组件、转子、线路板组件、套管以及阀组件，所述定子组件围绕所述转子设置，所述套管隔离所述定子组件和所述转子，所述定子组件和所述线路板组件电连接，所述电动阀成形有阀口，所述转子能够带动阀组件相对所述阀口运动，其特征在于：所述电动阀还包括盒体，所述线路板组件设置于所述盒体形成的盒体内腔，所述盒体包括壳体和盖体，所述壳体和所述盖体非一体成形，所述盖体和所述壳体通过焊接固定连接。
  9. 根据权利要求8所述的电动阀，其特征在于：所述壳体包括侧壁和底部，所述侧壁和所述底部形成壳体内腔，所述盒体内腔包括壳体内腔，所述侧壁与所述盖体固定连接，所述盖体包括第一固定部，所述第一固定部包括凹槽部，所述壳体包括第二固定部，所述第二固定部包括成形于所述侧壁的凸起部，所述凸起部插入所述凹槽部并固定连接。
  10. 根据权利要求9所述的电动阀，其特征在于：所述第二固定部还包括设置于所述凸起部的自由端的筋部，所述筋部与所述凸起部一体成形，沿所述电动阀的径向，所述筋部的截面积自所述筋部与所述凸起部的连接部至所述筋部的自由端逐渐减小，所述第二固定部与所述第一固定部在所 述筋部处焊接固定，焊接后，至少部分所述筋部融化；所述凸起部和所述凹槽部的侧壁之间形成环形间隙，所述环形间隙为溢料槽，融化的部分所述筋部进入所述溢料槽，所述溢料槽的体积大于等于所述筋部的体积。
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