WO2022237869A1 - 一种换热器 - Google Patents

一种换热器 Download PDF

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Publication number
WO2022237869A1
WO2022237869A1 PCT/CN2022/092445 CN2022092445W WO2022237869A1 WO 2022237869 A1 WO2022237869 A1 WO 2022237869A1 CN 2022092445 W CN2022092445 W CN 2022092445W WO 2022237869 A1 WO2022237869 A1 WO 2022237869A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
connecting seat
electric valve
cavity
installation cavity
Prior art date
Application number
PCT/CN2022/092445
Other languages
English (en)
French (fr)
Inventor
王军东
赵杨军
边奇铠
陈海涛
Original Assignee
浙江三花汽车零部件有限公司
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 浙江三花汽车零部件有限公司 filed Critical 浙江三花汽车零部件有限公司
Priority to JP2023569740A priority Critical patent/JP2024518493A/ja
Priority to EP22806831.8A priority patent/EP4339492A1/en
Priority to KR1020237042853A priority patent/KR20240006674A/ko
Priority to US18/560,389 priority patent/US20240229960A1/en
Publication of WO2022237869A1 publication Critical patent/WO2022237869A1/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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • 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
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • F16K31/045—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means with torque limiters
    • 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0626—Easy mounting or dismounting means
    • F16K5/0642—Easy mounting or dismounting means the spherical plug being insertable from one and only one side of the housing
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0647—Spindles or actuating means

Definitions

  • the invention relates to a flow control valve, in particular to an electric valve.
  • the electric valve controls the on-off or switching of the fluid through the rotation of the valve core.
  • the electric valve generally includes a transmission mechanism, a shaft and a valve core.
  • the transmission mechanism is connected to the shaft, and the shaft is connected to the valve core.
  • the pressure will be transmitted to the transmission mechanism through the shaft, which will force the transmission mechanism to be squeezed, increase the rotational friction of the transmission mechanism, and then increase the friction loss of the transmission mechanism, which will damage the performance of the electric valve. service life.
  • the purpose of the present invention is to provide an electric valve, which is beneficial to reduce the friction loss of the transmission mechanism, and further improve the service life of the electric valve.
  • An electric valve including a transmission mechanism, a valve core and a valve body assembly, the valve body assembly has a valve body cavity, the valve core is located in the valve body cavity, the transmission mechanism is connected to the valve core in transmission, and it is characterized in that : the electric valve also includes a connection seat, the connection seat is fixedly connected with the valve body assembly, the connection seat has a first through hole, the transmission mechanism includes an output shaft, a part of the output shaft is located on the In the first through hole, the other part of the output shaft is located in the valve body cavity, and the electric valve also includes a limiter, which is fixedly connected with the output shaft, and the limiter is located at the On one side of the connecting seat that is relatively close to the valve core, the limiter is arranged axially opposite to the connecting seat and has a set gap.
  • the limit frame is installed on the radial outer circumference of the output shaft and is fixedly connected with the output shaft.
  • the limit frame is located on the side of the connection seat relatively close to the valve core, and the limit frame is opposite to the connection seat.
  • the limit frame fixedly connected with the output shaft can move a set distance to the end of the connecting seat until it touches the end face of the connecting seat, limiting
  • the position frame can transmit part of the pressure to the connecting seat, and achieve a force balance due to the fixed connection between the connecting seat and the valve body assembly, thereby offsetting part or most of the pressure generated by the fluid and transmitting it to the transmission mechanism through the output shaft, which is beneficial to reduce the pressure of the transmission mechanism.
  • the extrusion caused by the fluid pressure between them is beneficial to reduce the friction loss of the transmission mechanism and improve the service life of the transmission mechanism, which in turn is beneficial to improve the service life of the electric valve.
  • Fig. 1 is the top structural schematic diagram of the first embodiment of electric valve
  • Fig. 2 is a schematic cross-sectional structure diagram of the electric valve shown in Fig. 1 along the direction A-A;
  • Fig. 3 is a schematic cross-sectional structure diagram of the electric valve shown in Fig. 1 along the B-B direction;
  • Fig. 4 is a schematic cross-sectional structure diagram of an angle in which the driving part, the transmission mechanism, the sleeve, the limit frame and the limit post shown in Fig. 2 or Fig. 3 cooperate with the connecting seat;
  • Fig. 5 is a three-dimensional structural schematic diagram of an angle in which the connecting seat shown in Fig. 9 cooperates with the output shaft, the limit frame, and the limit post;
  • Fig. 6 is a cross-sectional schematic diagram of the structure shown in Fig. 5;
  • Fig. 7 is a schematic perspective view of the three-dimensional structure of the output planetary gear assembly shown in Fig. 2 or 3;
  • Fig. 8 is a three-dimensional structural schematic diagram of an angle of the spacer shown in Fig. 5;
  • Fig. 9 is a perspective view of the three-dimensional structure of the connecting seat shown in Fig. 5;
  • Fig. 10 is a schematic top view of the connection seat shown in Fig. 9;
  • Fig. 11 is a schematic cross-sectional structure diagram of the connection seat shown in Fig. 10 along the C-C direction;
  • FIG. 12 is a perspective view of the three-dimensional structure of the limiting column shown in FIG. 5 .
  • the electric valve can be applied to a vehicle thermal management system or an air conditioning system, see Fig. 1-12, which is an embodiment of the electric valve of the present invention.
  • the electric valve 100 includes a control device, a valve body assembly 5 and a valve core 6 , the valve body assembly 5 has a valve body cavity 51 , and the valve core 6 is located in the valve body cavity 51 .
  • the control device includes a drive part 2 and a transmission mechanism 3.
  • the drive part 2 is used to output torque to the transmission mechanism 3.
  • the drive part 2 is connected to the transmission mechanism 3.
  • the transmission mechanism 3 is connected to the valve core 6.
  • the control device is connected to the valve body assembly 5.
  • Fixed connection, the electric valve 100 is electrically connected and/or signal connected with the outside through the control device, and the fixed connection mentioned here includes welding, bonding or screw connection or flange connection.
  • the driving part 2 includes a rotor assembly 21 and a stator assembly 22 , and the stator assembly 22 is located on the outer periphery of the rotor assembly 21 .
  • the rotor assembly 21 has a rotor chamber 210 , at least part of the transmission mechanism 3 is located in the rotor chamber 210 , and at least part of the transmission mechanism 3 is located in the rotor chamber 210 , which is beneficial to reduce the axial height of the electric valve 100 .
  • the control device also includes a circuit board 7 , and the stator assembly 22 is electrically and/or signally connected to the circuit board 7 .
  • the control device also includes a bushing 81 and a connecting seat 9 , at least a part of the bushing 81 is located between the rotor assembly 21 and the stator assembly 22 to play an isolation role.
  • the casing 81 has a casing cavity 810, the rotor assembly 21 is located in the casing cavity 810, and the casing 81 is fixedly connected with the connecting seat 9.
  • the casing 81 and the connecting seat 9 are fixedly connected by welding.
  • the connecting seat 9 has a receiving cavity 91 , and part of the transmission mechanism 3 is located in the receiving cavity 91 , and the connecting seat 9 is fixedly connected with the valve body assembly 5 .
  • the transmission mechanism 3 is a planetary gear mechanism, of course, as other implementations, the transmission mechanism 3 may be other forms of transmission mechanisms.
  • the transmission mechanism 3 includes a sun gear 31, a fixed ring gear 32 and at least one planetary gear assembly.
  • the transmission mechanism 3 can be provided with one or more stages of planetary gear assemblies according to the needs of the transmission ratio, as in In this embodiment, along the axial direction of the transmission mechanism, four stages of planetary gear assemblies are provided, including a first planetary gear assembly 33 , a second planetary gear assembly 34 , a third planetary gear assembly 35 and an output planetary gear assembly 36 .
  • the rotor assembly 21 includes a rotor magnetic ring 211 and a connecting plate 212 .
  • the connecting plate 212 is used as an injection molded insert to form the rotor assembly 21 through injection molding.
  • the connecting plate 212 is fixedly connected to the sun gear 31 or injection molded.
  • the sun gear 31 is disposed, and the third planetary gear assembly 35 is disposed closer to the sun gear 31 than the output planetary gear assembly 36 .
  • the fixed ring gear 32 has internal teeth, the fixed ring gear 32 is located on the outer periphery of the planetary gear assembly, part of the fixed ring gear 32 is located in the rotor chamber 210, and part of the fixed ring gear 32 is located in the accommodation cavity 91 of the connecting seat 9.
  • the fixed ring gear 32 is connected to the Seat 9 is fixedly connected.
  • the first planetary gear assembly 33, the second planetary gear assembly 34 and the third planetary gear assembly 35 have the same structure, the first planetary gear assembly 33 is respectively meshed with the sun gear 31 and the fixed ring gear 32, and the second planetary gear assembly 34 is respectively meshed with the fixed ring gear 32
  • the first planetary gear assembly 31 is in gear engagement with the fixed ring gear 32
  • the third planetary gear assembly 35 is in gear engagement with the second planetary gear assembly 36 and the fixed ring gear 32 respectively.
  • the output planetary gear assembly 36 includes an output planetary gear 361, a positioning shaft 362 and an output shaft 363.
  • the output planetary gear 361 is located on the outer periphery of the positioning shaft 362.
  • the output planetary gear 361 is in gear engagement with the third planetary gear assembly 35, and the output planetary gear
  • the wheel 361 meshes with the fixed ring gear 32.
  • the positioning shaft 362 and the output shaft 363 can be injection molded into one body or assembled and fixed. In this embodiment, the positioning shaft 362 and the output shaft 363 are assembled and fixed.
  • the output shaft 363 includes a first stepped portion 3631, a second stepped portion 3632, and a shaft portion 4.
  • the second stepped portion 3632 is closer to the valve core 6 than the first stepped portion 3631
  • the shaft part 4 is closer to the valve core 6 than the second step part 3632
  • the width of the first step part 3631 in the radial direction is greater than the width of the second step part 3632 in the radial direction
  • the width of the shaft part 4 in the radial direction is smaller than The width of the second step portion 3632 in the radial direction.
  • the output shaft 363 is partly located in the receiving cavity 91 of the connecting seat 9 , and part of the output shaft 363 passes through the connecting seat 9 and is connected to the valve core 6 through the shaft part 4 .
  • the valve core 6 includes a spherical surface or a spherical surface.
  • the valve core 6 can also be in other shapes, such as cylindrical, frustoconical, conical, needle-shaped, and so on.
  • the valve core 6 has a hole 61 passing through the valve core, and the valve body assembly 5 includes at least two communication passages 52 , 53 .
  • the stator assembly 22 After the circuit board 7 controls the stator assembly 22 to be energized, the stator assembly 22 generates an excitation magnetic field, and the rotor assembly 21 drives the sun gear 31 to rotate under the excitation of the magnetic force, and the sun gear 31 drives the first planetary gear assembly 33 to rotate, and the first planetary gear assembly 33 Drive the second planetary gear assembly 34 to rotate, the second planetary gear assembly 34 drives the third planetary gear assembly 35 to rotate, the third planetary gear assembly 35 drives the output planetary gear 361 to rotate, the output planetary gear 361 drives the output shaft 363 through the positioning shaft 362, The shaft part 4 of the output shaft 363 is in transmission connection with the valve core 6. The rotation of the shaft part 4 drives the rotation of the valve core 6.
  • the hole 61 of the valve core 6 can be connected or not connected with the valve body assembly 5.
  • the communication channels 52 and 53 realize the on-off control of the electric valve on the fluid.
  • the electric valve 100 is a two-way valve, and the number of circulation channels is two.
  • the electric valve can also be a three-way valve, a four-way valve or other multi-way valves, that is, the valve body assembly
  • the number of circulation passages is three, four and so on.
  • the connecting base 9 includes a main body 92 and a first flange 93, the first flange 93 extends radially outward from the outer periphery of the side wall of the main body 92, the main body 92 and the first flange
  • the edge portion 93 is integrally processed and formed.
  • the main body 92 includes a bottom 921 and a side wall 922 , the main body 92 forms an accommodating cavity 91 , and the accommodating cavity 91 is located inside the inner wall of the side wall 922 and on the bottom 921 .
  • the bottom 921 has a first through hole 923 as an opening of the receiving cavity 91 , the first through hole 923 penetrates the bottom 921 in the axial direction and is located in the middle of the bottom 921 .
  • the electric valve 100 also includes a compression nut 82, the compression nut 82 is sleeved on the radial outer periphery of the side wall of the main body part 92 of the connecting seat 9, the compression nut 82 and the first flange part 93 One end surface of the first flange portion 93 is abutted against, and the up and down direction is set in the direction of FIG.
  • the connection seat 9 is fixedly connected with the valve body assembly 5 .
  • the connecting seat 9 and the fixed ring gear 32 can be fixedly connected by means of welding, riveting or the like.
  • the first stepped portion 3631 of the output shaft 363 is located in the housing cavity 91 of the connecting seat 9 and abuts against the bottom 921, and the second stepped portion 3632 of the output shaft 363 is along the axial height of the electric valve. is h 1 , and the axial depth of the first through hole 923 along the electric valve is denoted as h 2 .
  • the height of the second stepped portion 3632 of the output shaft 363 along the axial direction of the electric valve is greater than the axial depth of the first through hole 923 along the electric valve, that is, h 1 >h 2 , so a part of the second stepped portion 3632 is located in the first through hole 923 Inside, another part of the second step portion 3632 protrudes from the lower end surface of the bottom 921 through the first through hole 923, the protruding part is located in the valve body cavity 51, and the second step portion 3632 located in the valve body cavity 51 is along the axis of the electric valve.
  • the electric valve 100 further includes a limiting frame 83 which is fixedly connected to the shaft part 4 .
  • the limiting frame 83 and the shaft portion 4 can be of a separate structure, and the two are fixedly connected by welding, tight fitting or other means, and the limiting frame 83 and the shaft portion 4 can also be of an integrated structure to achieve fixed connection.
  • the limiting frame 83 is located on the side of the connecting seat 9 relatively close to the valve core 6, and the limiting frame 83 is arranged opposite to the connecting seat 9 in the axial direction.
  • the relative setting mentioned here means that the outer diameter of the limiting frame 83 is larger than the first
  • the diameter of the through hole 923 the part of the limiting frame 83 larger than the diameter of the first through hole 923 is opposite to the corresponding part of the connecting seat 9 .
  • the limiting frame 83 has a mounting hole 831, the mounting hole 831 is arranged axially and penetrates the limiting frame 83, part of the shaft portion 4 is located in the mounting hole 831 of the limiting frame 83, and part of the shaft portion 4 passes through the mounting hole 831 and the valve core. 6 connections.
  • the shape of the mounting hole 831 is the same as that of the part of the shaft portion 4 that is located in the mounting hole 831.
  • the outer dimensions of the mounting hole 831 are slightly larger than the outer dimensions of the shaft portion 4, for example, the length of the mounting hole 831 is 0.02 larger than the length of the shaft portion 4. mm, the width of the mounting hole 831 is 0.02 mm larger than the width of the shaft portion 4 , so that the shaft portion 4 can pass through the limit frame 83 .
  • a part of the upper end surface of the limit frame 83 abuts against the second step portion 3632 of the output shaft 363, another part of the upper end surface of the limit frame 83 does not abut against the second step portion 3632 of the output shaft 363, and the lower end of the limit frame 83 It is welded and fixed with the shaft part 4.
  • the mounting hole 831 is roughly cuboid, and the lower end surface of the mounting hole 831 is roughly rectangular.
  • the shaft part 4 is fixed by laser welding.
  • the two short sides arranged in parallel can also be fixed to the shaft part 4 by laser welding.
  • the limit frame 83 and the shaft part 4 are fixed by assembly and welding. Compared with the limit frame 83 and the shaft part 4 fixed by tight fit, this fixing method is more reliable and helps to reduce the risk of failure of the limit frame 83. , prolong the service life of the spacer 83.
  • the installation hole 831 may also be in other structures such as a cylinder, and is not limited to the cuboid structure in the embodiment.
  • the axial height h 1 of the second step portion 3632 of the output shaft 363 along the electric valve is greater than the axial depth h 2 of the first through hole along the electric valve, a part of the upper end surface of the limiter 83 and the second step of the output shaft 363 part 3632 of the stopper 83 is not in contact with the second step part 3632 of the output shaft 363, so the stopper 83 is not in contact with the second step part 3632 of the output shaft 363.
  • the end surface and the end surface of the connecting seat 9 close to the valve core 6 that is, the lower end surface of the connecting seat 9 , are oppositely arranged and there is a gap.
  • a certain gap is reserved between the position frame 83 and the connecting seat 9, which can reduce the frictional resistance when the position limit frame 83 rotates.
  • the fluid flowing through the electric valve is high-pressure fluid
  • the fluid in the valve body cavity 51 acts on the end surface of the shaft part 4, which will generate an upward pressure on the shaft part 4 in the axial direction.
  • the limit frame 83 fixedly connected with the part 4 and the output shaft 363 can move upward for a certain distance until the limit frame 83 touches the lower end surface of the connection seat 9. This distance is the aforementioned gap h 1 -h 2 .
  • the limit frame 83 is in contact with the lower end surface of the connection seat 9, and the limit frame 83 can transmit part of the pressure to the connection seat 9, and the force balance is achieved due to the fixed connection between the connection seat 9 and the valve body assembly 5, thereby offsetting Part or most of the pressure generated by the high-pressure fluid is transmitted to the planetary gear assemblies 33-36 at all levels through the output shaft 363, which is beneficial to reducing the extrusion caused by fluid pressure between the planetary gear assemblies at all levels, and is conducive to reducing the planetary gear assembly.
  • the friction loss of the components improves the service life of the transmission mechanism, which in turn helps to improve the service life of the electric valve.
  • the limit frame 83 also includes a stop portion 832 , and the stop portion 832 includes a first stop surface 8321 , a second stop surface 8323 and a non-stop surface 8322 .
  • the non-stop surface 8322 is an arc surface
  • the first stop surface 8321 and the second stop surface 8323 are planes
  • the first stop surface 8321 is directly connected to one end of the non-stop surface 8322 or connected through a connecting arc surface
  • the second stop surface 8323 It is directly connected to the other end of the non-stop surface 8322 or connected through a connecting arc surface
  • the first stop surface 8321 is not directly connected to the second stop surface 8323 .
  • the first stop surface 8321 , the non-stop surface 8322 , and the second stop surface 8323 are part of the annular peripheral wall of the stop portion 83 .
  • the electric valve 100 also includes a limit post 84 .
  • the limiting column 84 is roughly T-shaped, and the limiting column 84 includes a head 841 and a rod 842 , the diameter of the head 841 is larger than the diameter of the rod 842 .
  • the connecting base 9 also has an installation cavity 924, which is used to install the limit post 84, and the installation cavity 924 penetrates the bottom 921 in the axial direction, and the installation cavity 924 is farther away from the connection base 9 than the first through hole 923.
  • the central axis D-D, the installation cavity 924 includes a first installation cavity 9241 and a second installation cavity 9242 arranged axially, the first installation cavity 9241 and the second installation cavity 9242 communicate, and the second installation cavity 9242 is closer than the first installation cavity 9241
  • the inner diameter of the first installation cavity 9241 is greater than the inner diameter of the second installation cavity 9242 .
  • the connecting base 9 includes a third step portion 925, the third step portion 925 serves as a part of the cavity wall forming the installation cavity 924, and is bounded by the step surface 9251 of the third step portion 925, and the part above the step surface 9251 is the first installation cavity 9241, The part below the step surface 9251 is the second installation cavity 9242 .
  • the head 841 of the limiting column 84 is located in the first installation cavity 9241, the head 841 of the limiting part 84 abuts against the third step 925, and the head 841 of the limiting column 84 does not exceed the first installation cavity 9241 away from the valve.
  • the opening at the end of the body assembly is the upper opening of the first installation cavity 9241, preventing the limit post 84 from affecting the rotation of the output shaft 363.
  • the diameter of the head 841 is smaller than the inner diameter of the first installation cavity 9241, and the head and the cavity forming the first installation cavity The walls are a clearance fit.
  • a part of the rod portion 842 of the limit post 84 is located in the second installation cavity 9242, the diameter of the rod portion 842 is slightly larger than the inner diameter of the second installation cavity 9242, the rod portion 842 located in the second installation cavity 9242 and the second installation cavity are formed.
  • the cavity wall that is, the third step portion 925 is an interference fit, and the remaining part of the rod portion 842 passes through the second installation cavity 9242 and is located in the valve body cavity 51.
  • the limit frame 83 rotates, it passes through the second installation cavity 9242 and is located in the valve body cavity.
  • the part of the rod portion 842 in the body cavity 51 can be in contact with the first stop surface 8321 or the second stop surface 8323 of the limit frame 83, and the limit column 84 is not in contact with the non-stop surface 8322, so that the position limit can be adjusted.
  • the rotation angle of the frame 83 is restricted, and the rotation angle of the shaft part 4 can be restricted further.
  • the limit post 84 can be installed by pressing the stop post 84 downward from the upper end of the installation cavity 924, so that the head 841 of the stop post 84 abuts against the cavity wall forming the installation cavity, that is, the third step portion 925 of the connecting seat 9.
  • the third step portion 925 can limit the movement of the limiting post 84 toward the valve body assembly 5, reduce the risk of the limiting post 84 falling into the valve body cavity 51, and improve the service life of the limiting post.
  • the connecting seat 9 also has a positioning hole 94 , and the valve body assembly 5 is provided with a corresponding positioning column (not shown in the drawings), and the positioning column and the positioning hole 94 cooperate to play a positioning role.
  • the connecting seat 9 also includes a fourth stepped portion 926, the fourth stepped portion 926 is located on the inner circumference of the side wall of the connecting seat 9, along the axial direction of the electric valve, the third stepped portion 925 is larger than the fourth stepped portion 926 The stepped portion 926 is closer to the valve core 6 .
  • connection base 9 further includes a riveting portion 927 located on the upper end of the main body portion 92 , and the riveting portion 927 is used for fixed connection with the fixed ring gear 32 .
  • the connection seat 9 can be a metal piece, for example, stainless steel is used to obtain the desired structure and shape by cutting.
  • the fixed ring gear 32 has a second flange part 321, the second flange part 321 is located at one end of the fixed ring gear 32 close to the valve body assembly 5, and the second flange part 321 is self-fixed by the fixed ring gear 32
  • the peripheral wall extends outwards in the radial direction.
  • the lower surface of the second flange portion 321 of the fixed ring gear 32 abuts against the fourth stepped portion 926, the outer peripheral surface of the second flange portion 321 abuts against the side wall 922 of the main body of the connecting seat, and the crimping portion 927 of the connecting seat It is fixed with the fixed ring gear 32 by riveting.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

一种电动阀(500)，包括传动机构(3)、阀芯(6)以及阀体组件(5)，阀体组件具有阀体腔(51)，阀芯位于阀体腔，传动机构与阀芯传动连接；电动阀还包括连接座(9)，连接座与阀体组件固定连接，传动机构包括输出轴(363)；电动阀还包括限位架(83)，限位架位于输出轴的径向外周并与输出轴固定连接，限位架位于连接座的相对靠近阀芯的一侧，限位架与连接座相对设置并具有设定间隙。电动阀的这种结构，有利于减小传动机构的摩擦损耗，提高传动机构的使用寿命，进而有利于提高电动阀的使用寿命。

Description

一种换热器
本申请要求于2021年05月13日提交中国专利局、申请号为202110523047.6、发明名称为“一种电动阀”,以及于2021年08月09日提交中国专利局、申请号为202110906320.3、发明名称为“一种电动阀”的两件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
本发明涉及一种流量控制阀，具体涉及一种电动阀。
背景技术
电动阀通过阀芯的转动来控制流体的通断或切换，电动阀一般包括传动机构、轴部以及阀芯，传动机构与轴部传动连接，轴部与阀芯传动连接，当高压的流体作用于轴部上时，压力会通过轴部传递至传动机构，这样会使传动机构受力被挤压，增大传动机构的转动摩擦，进而增大传动机构的摩擦损耗，有损于电动阀的使用寿命。
发明内容
本发明的目的在于提供一种电动阀，有利于减小传动机构的摩擦损耗，进而提高电动阀的使用寿命。
为实现上述目的，本发明的一个实施方式采用如下技术方案：
一种电动阀，包括传动机构、阀芯以及阀体组件，所述阀体组件具有阀体腔，所述阀芯位于所述阀体腔，所述传动机构与所述阀芯传动连接，其特征在于：所述电动阀还包括连接座，所述连接座与所述阀体组件固定 连接，所述连接座具有第一通孔，所述传动机构包括输出轴，所述输出轴的一部分位于所述第一通孔内，所述输出轴的另外一部分位于所述阀体腔，所述电动阀还包括限位架，所述限位架与所述输出轴固定连接，所述限位架位于所述连接座的相对靠近所述阀芯的一侧，所述限位架沿轴向与所述连接座相对设置并具有设定间隙。本申请的实施方式提供的电动阀，限位架设于输出轴的径向外周并与输出轴固定连接，限位架位于连接座的相对靠近阀芯的一侧，限位架与连接座相对设置并具有设定间隙，当流体压力作用于输出轴的端面上时，在压力的作用下与输出轴固定连接的限位架可以向连接座端移动设定距离直至与连接座的端面相抵，限位架能够将部分压力传递给连接座，并由于连接座与阀体组件固定连接而达到力平衡，从而抵消一部分或大部分流体产生的压力通过输出轴传递至传动机构，这样有利于减少传动机构之间因流体压力而造成的挤压，有利于减小传动机构的摩擦损耗，提高传动机构的使用寿命，进而有利于提高电动阀的使用寿命。
附图说明
图1是电动阀的第一种实施方式的俯视结构示意图；
图2是图1所示电动阀沿A-A方向的截面结构示意图；
图3是图1所示电动阀沿B-B方向的截面结构示意图；
图4是图2或图3所示驱动部、传动机构、套管以及限位架和限位柱与连接座配合的一个角度的截面结构示意图；
图5是图9所示连接座与输出轴、限位架、限位柱配合的一个角度的立体结构示意图；
图6是图5所示结构的一个截面结构示意图；
图7是图2或3所示输出行星轮组件的一个角度的立体结构示意图；
图8是图5所示的限位架的一个角度的立体结构示意图；
图9是图5所示连接座的一个角度的立体结构示意图；
图10是图9所示连接座的俯视结构示意图；
图11是图10所示连接座沿C-C方向的截面结构示意图；
图12是图5所示限位柱的一个角度的立体结构示意图。
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：
电动阀可应用于车辆热管理系统或空调系统，参见图1-12，为本发明的电动阀的一个实施例。电动阀100包括控制装置、阀体组件5以及阀芯6，阀体组件5具有阀体腔51，阀芯6位于阀体腔51。控制装置包括驱动部2、传动机构3，驱动部2用于输出力矩给传动机构3，驱动部2与传动机构3传动连接，传动机构3与阀芯6传动连接，控制装置与阀体组件5固定连接，电动阀100通过控制装置与外界电连接和/或信号连接，这里所述的固定连接包括焊接、粘接或者螺纹连接或者通过法兰连接等。
参见图2、3、4，驱动部2包括转子组件21和定子组件22，定子组件22位于转子组件21的外周。转子组件21具有转子腔210，至少部分传动机构3位于转子腔210，设置至少部分传动机构3位于转子腔210，有利于减小电动阀100的轴向高度。控制装置还包括电路板7，定子组件22与电路板7电连接和/或信号连接。
控制装置还包括套管81和连接座9，至少部分套管81位于转子组件21和定子组件22之间，起到隔离作用。套管81具有套管腔810，转子组件21位于套管腔810，套管81与连接座9固定连接，在本实施例中，套管81与连接座9通过焊接固定连接。连接座9具有容纳腔91，部分传动机构3位于容纳腔91，连接座9与阀体组件5固定连接。
在本实施例中，传动机构3为行星齿轮机构，当然作为其他实施方式，传动机构3可以是其他形式的传动机构。参见图2、3、4，传动机构3包括太阳轮31、定齿圈32和至少一级行星轮组件，传动机构3可以根据传动比的需要，设置一级或多级行星轮组件，如在本实施例中，沿传动机构的轴向，共设置有4级行星轮组件，分别包括第一行星轮组件33、第二行星轮组件34、第三行星轮组件35以及输出行星轮组件36。转子组件21包括转子磁环211和连接板212，以连接板212为注塑嵌件，经过注塑形成转子组件21，连接板212与太阳轮31固定连接或者注塑成型。沿电动阀100的轴向即图2所示O-O方向，第一行星轮组件33比第二行星轮组件34更靠近太阳轮31设置，第二行星轮组件34比第三行星轮组件35更靠近太阳轮31设置，第三行星轮组件35比输出行星轮组件36更靠近太阳轮31设置。定齿圈32具有内齿部，定齿圈32位于行星轮组件的外周，部分定齿圈32位于转子腔210，部分定齿圈32位于连接座9的容纳腔91，定齿圈32与连接座9固定连接。第一行星轮组件33、第二行星轮组件34以及第三行星轮组件35结构相同，第一行星轮组件33分别与太阳轮31和定齿圈32齿轮啮合，第二行星轮组件34分别与第一行星轮组件31和定齿圈32齿轮啮合，第三行星轮组件35分别与第二行星轮组件36和定齿圈 32齿轮啮合。
参见图7，输出行星轮组件36包括输出行星轮361、定位轴362以及输出轴363，输出行星轮361位于定位轴362的外周，输出行星轮361与第三行星轮组件35齿轮啮合，输出行星轮361与定齿圈32齿轮啮合，定位轴362与输出轴363可以注塑成一体或装配固定，本实施例中定位轴362与输出轴363装配固定。输出轴363包括第一台阶部3631、第二台阶部3632、轴部4，沿着电动阀的轴向，结合图2、3，第二台阶部3632比第一台阶部3631更靠近阀芯6，轴部4比第二台阶部3632更靠近阀芯6，第一台阶部3631在径向方向的宽度大于第二台阶部3632在径向方向的宽度，轴部4在径向方向的宽度小于第二台阶部3632在径向方向的宽度。输出轴363部分位于连接座9的容纳腔91，输出轴363部分穿过连接座9并通过轴部4与阀芯6连接。本实施例中阀芯6包括球状表面或类球状表面，当然作为其他实施方式，阀芯6还可以为其他形状，如圆柱形、圆台形、锥形、针状等等。阀芯6具有贯穿阀芯的孔道61，阀体组件5包括至少两个流通通道52、53。电路板7控制定子组件22通电后，定子组件22产生激励磁场，转子组件21在磁力的激励下，带动太阳轮31转动，太阳轮31带动第一行星轮组件33转动，第一行星轮组件33带动第二行星轮组件34转动，第二行星轮组件34带动第三行星轮组件35转动，第三行星轮组件35带动输出行星轮361转动，输出行星轮361通过定位轴362带动输出轴363，输出轴363的轴部4与阀芯6传动连接，轴部4的转动带动阀芯6的转动，随着阀芯6的转动，阀芯6的孔道61能够连通或不连通阀体组件5的流通通道52、53，从而实现电动阀对流体的通断控制。在本实施例中， 电动阀100为两通阀，流通通道个数为两个，当然作为其他实施方式，电动阀还可以为三通阀、四通阀或其他多通阀，即阀体组件的流通通道个数为三个、四个等多个流通通道，通过旋转阀芯6，能够连通流通通道中的两个或多个，从而实现电动阀对流体的切换控制。
参见图9-11，连接座9包括主体部92和第一凸缘部93，第一凸缘部93自主体部92侧壁的外周沿径向方向向外延伸，主体部92与第一凸缘部93一体加工成型。主体部92包括底部921和侧壁922，主体部92形成容纳腔91，容纳腔91位于侧壁922的内壁以内、底部921之上。底部921具有第一通孔923作为容纳腔91的一个开口，第一通孔923沿轴向贯穿底部921并位于底部921的中部。
如图2、3所示，电动阀100还包括压紧螺母82，压紧螺母82套设于连接座9的主体部92侧壁的径向外周，压紧螺母82与第一凸缘部93的一端面抵接，以图2的方向设定上下方向，本实施例中，压紧螺母82与第一凸缘部93的上表面抵接，压紧螺母82与阀体组件5螺纹连接，使得连接座9与阀体组件5固定连接。连接座9与定齿圈32之间可以通过焊接、铆接等方式固定连接。
结合图5、6、9-11，输出轴363的第一台阶部3631位于连接座9的容纳腔91并与底部921抵接，输出轴363的第二台阶部3632沿电动阀的轴向高度为h 1，第一通孔923沿电动阀的轴向深度记为h 2。输出轴363的第二台阶部3632沿电动阀的轴向高度大于第一通孔923沿电动阀的轴向深度，即h 1>h 2，因此一部分第二台阶部3632位于第一通孔923内，另一部分第二台阶部3632穿过第一通孔923凸出于底部921的下端面，凸出的部 分位于阀体腔51，位于阀体腔51内的第二台阶部3632沿电动阀的轴向高度为h 1-h 2，h 1-h 2＝0.1～0.2mm。
参见图5、8，电动阀100还包括限位架83，限位架83与轴部4固定连接。这里需要说明的是，限位架83与轴部4可以分体结构，二者通过焊接、紧配或者其他方式固定连接，限位架83与轴部4也可以为一体结构进而实现固定连接。限位架83位于连接座9的相对靠近阀芯6的一侧，限位架83与连接座9沿轴向相对设置，这里所述的相对设置指，限位架83的外径大于第一通孔923的孔径，限位架83大于第一通孔923孔径的部分与连接座9的对应部分相对设置。限位架83具有安装孔831，安装孔831沿轴向设置并贯穿限位架83，部分轴部4位于限位架83的安装孔831内，部分轴部4穿过安装孔831与阀芯6连接。安装孔831的形状与位于安装孔831内的该部分轴部4形状相同，安装孔831的外形尺寸略大于轴部4的外形尺寸，例如使安装孔831的长度比轴部4的长度大0.02mm，安装孔831的宽度比轴部4的宽度大0.02mm，使得轴部4能够穿过限位架83。限位架83的一部分上端面与输出轴363的第二台阶部3632抵接，限位架83的另外一部分上端面不与输出轴363的第二台阶部3632抵接，限位架83的下端与轴部4焊接固定。本实施例中安装孔831大致呈长方体，安装孔831的下端面大致呈矩形，下端面包括平行设置的两长边和两短边，可以在限位架83的平行设置的两长边附近与轴部4通过激光焊接固定，当然为了加固限位架83与轴部4，也可以将平行设置的两短边也与轴部4通过激光焊接固定。限位架83与轴部4通过装配加焊接的方法固定，相比于限位架83与轴部4通过紧配固定，该固定方式更加可靠，有利于减小限位架 83固定失效的风险，延长限位架83的使用寿命。可以理解的是，安装孔831也可以是圆柱形等其他结构，并不仅于实施例中的长方体结构。
由于输出轴363的第二台阶部3632沿电动阀的轴向高度h 1大于第一通孔沿电动阀的轴向深度h 2，限位架83的一部分上端面与输出轴363的第二台阶部3632抵接，限位架83的另外一部分上端面不与输出轴363的第二台阶部3632抵接，因此限位架83不与输出轴363的第二台阶部3632抵接的该部分上端面与连接座9靠近阀芯6的端面即连接座9下端面相对设置并存在着间隙，该间隙的大小为h 1-h 2，h 1-h 2通常在0.1～0.2mm之间，限位架83与连接座9保留一定间隙，这样能够减小限位架83旋转时的摩擦阻力。当流过电动阀的流体为高压流体时，位于阀体腔51内的流体作用于轴部4的端面上，将会对轴部4产生一个沿轴向向上的压力，在压力的作用下与轴部4固定连接的限位架83以及输出轴363可以向上移动一定距离直至限位架83与连接座9的下端面相抵，该距离即前述间隙h 1-h 2，在轴向压力较大的情况下时，限位架83与连接座9的下端面相抵，限位架83能够将部分压力传递给连接座9，并由于连接座9与阀体组件5固定连接而达到力平衡，从而抵消一部分或大部分高压流体产生的压力通过输出轴363传递至各级行星轮组件33～36，这样有利于减少各级行星轮组件之间因流体压力而造成的挤压，有利于减小行星轮组件的摩擦损耗，提高传动机构的使用寿命，进而有利于提高电动阀的使用寿命。
参见图8，限位架83还包括止动部832，止动部832包括第一止动面8321、第二止动面8323和非止动面8322，在本实施例中，非止动面8322为弧面，第一止动面8321和第二止动面8323为平面，第一止动面8321 与非止动面8322的一端直接连接或者通过连接弧面连接，第二止动面8323与非止动面8322的另一端直接连接或者通过连接弧面连接，第一止动面8321与第二止动面8323不直接相连。图8中，第一止动面8321、非止动面8322、第二止动面8323为止动部83的环形外周壁的一部分。
电动阀100还包括限位柱84。参见图12，限位柱84大致呈T形，限位柱84包括头部841和杆部842，头部841的直径大于杆部842的直径。参见图9、11，连接座9还具有安装腔924，安装腔924用于安装限位柱84，安装腔924沿轴向贯穿底部921，安装腔924比第一通孔923远离连接座9的中心轴线D-D，安装腔924包括轴向设置的第一安装腔9241和第二安装腔9242，第一安装腔9241和第二安装腔9242连通，第二安装腔9242比第一安装腔9241更靠近阀芯6，第一安装腔9241的内径大于第二安装腔9242的内径。连接座9包括第三台阶部925，第三台阶部925作为形成安装腔924的部分腔壁，以第三台阶部925的台阶面9251为界，台阶面9251以上部分为第一安装腔9241，台阶面9251以下部分为第二安装腔9242。限位柱84的头部841位于第一安装腔9241，限位部84的头部841与第三台阶部925抵接，限位柱84的头部841不超出第一安装腔9241的远离阀体组件端的开口即第一安装腔9241的上端开口，防止限位柱84影响输出轴363的旋转，头部841的直径小于第一安装腔9241的内径，头部与形成第一安装腔的腔壁为间隙配合。限位柱84的杆部842的一部分位于第二安装腔9242，杆部842的直径略大于第二安装腔9242的内径，位于第二安装腔9242内的杆部842与形成第二安装腔的腔壁即第三台阶部925之间为过盈配合，杆部842的剩余部分穿过第二安装腔9242位于阀体腔 51内，限位架83转动时，穿过第二安装腔9242位于阀体腔51内的该部分杆部842能够与限位架83的第一止动面8321或第二止动面8323抵接，限位柱84与非止动面8322不接触，从而能够对限位架83转动的角度进行限制，进而能够对轴部4转动的角度进行限制。安装限位柱84可以通过将限位柱84自安装腔924的上端往下压入，使得限位柱84的头部841与形成安装腔的腔壁即连接座9的第三台阶部925抵接，第三台阶部925能够限制限位柱84向靠近阀体组件5方向运动，减少限位柱84掉入阀体腔51内的风险，提高限位柱的使用寿命。
此外，如图5所示，连接座9还具有定位孔94，阀体组件5上设有对应的定位柱(附图未示出)，定位柱和定位孔94相配合起到定位作用。如图4和图9所示，连接座9还包括第四台阶部926，第四台阶部926位于连接座9的侧壁内周，沿电动阀的轴向，第三台阶部925比第四台阶部926更靠近阀芯6。连接座9还包括铆压部927，铆压部927位于主体部92的上端，铆压部927用于与定齿圈32的固定连接。连接座9可以是金属件，例如采用不锈钢通过切削加工得到所需结构和形状。如图3和图9所示，定齿圈32具有第二凸缘部321，第二凸缘部321位于定齿圈32靠近阀体组件5的一端，第二凸缘部321自定齿圈32外周壁沿径向方向向外延伸。定齿圈32的第二凸缘部321的下表面与第四台阶部926抵接，第二凸缘部321的外周面与连接座主体部侧壁922抵接，连接座的铆压部927与定齿圈32通过铆接固定。
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，包括传动机构、阀芯以及阀体组件，所述阀体组件具有阀体腔，所述阀芯位于所述阀体腔，所述传动机构与所述阀芯传动连接，其特征在于：所述电动阀还包括连接座，所述连接座与所述阀体组件固定连接，所述连接座具有第一通孔，所述传动机构包括输出轴，所述输出轴的一部分位于所述第一通孔内，所述输出轴的另外一部分位于所述阀体腔，所述电动阀还包括限位架，所述限位架与所述输出轴固定连接，所述限位架位于所述连接座的相对靠近所述阀芯的一侧，所述限位架沿轴向与所述连接座相对设置并具有设定间隙。
  2. 如权利要求1所述的电动阀，其特征在于：所述输出轴包括第一台阶部和第二台阶部，所述第二台阶部比所述第一台阶部更靠近所述阀芯，所述第一台阶部沿径向方向的宽度大于所述第二台阶部沿径向方向的宽度，所述第一台阶部与所述连接座的远离所述阀芯的端面抵接，所述第二台阶部的一部分位于所述第一通孔，所述第二台阶部的另外一部分位于所述阀体腔，所述限位架与所述第二台阶部抵接。
  3. 如权利要求2所述的电动阀，其特征在于：所述第二台阶部沿所述电动阀的轴向长度为h 1，所述第一通孔沿所述电动阀的轴向深度为h 2，定义所述设定间隙为h 1-h 2，h 1-h 2满足以下关系式：h 1-h 2＝0.1～0.2mm。
  4. 如权利要求1～3任一项所述的电动阀，其特征在于：所述连接座包括主体部，所述主体部包括底部和侧壁，所述连接座具有容纳腔，所述容纳腔位于所述侧壁的内壁以内、底部之上，所述第一通孔在所述底部具有开口，所述传动机构包括定齿圈和至少一级行星轮组件，所述定齿圈以及 所述行星轮组件至少部分位于所述容纳腔，所述定齿圈与所述连接座固定连接。
  5. 如权利要求4所述的电动阀，其特征在于：所述输出轴包括轴部，所述轴部比所述第二台阶部更靠近所述阀芯，所述限位架具有安装孔，所述安装孔沿轴向贯穿所述限位架，所述轴部的部分位于所述安装孔与所述阀芯传动连接，所述限位架与所述轴部焊接固定。
  6. 如权利要求5所述的电动阀，其特征在于：所述电动阀还包括限位柱，所述限位柱与所述限位架配合限制所述轴部的转动角度，所述连接座具有安装腔，所述安装腔沿轴向贯穿所述底部，所述安装腔比所述第一通孔远离所述连接座的中心，所述限位柱包括头部和杆部，所述头部的直径大于所述杆部的直径，所述杆部比所述头部靠近所述阀芯，所述头部位于所述安装腔，所述杆部的至少部分位于所述阀体腔。
  7. 如权利要求6所述的电动阀，其特征在于：所述限位架包括止动部，所述止动部包括第一止动面、第二止动面和非止动面，所述第一止动面与非止动面的一端连接，所述第二止动面与非止动面的另一端连接，位于所述阀体腔的杆部能够与所述限位架的第一止动面或第二止动面抵接。
  8. 如权利要求6或7所述的电动阀，其特征在于：所述安装腔包括轴向设置的第一安装腔和第二安装腔，所述第二安装腔比所述第一安装腔更靠近所述阀芯，所述第一安装腔的内径大于所述第二安装腔的内径，所述连接座包括第三台阶部，所述第三台阶部作为形成所述安装腔的部分腔壁，所述头部位于所述第一安装腔内并与所述第三台阶部抵接，所述头部不超出所述第一安装腔的远离所述阀体组件端的开口，所述杆部部分位于所述 第二安装腔内，所述杆部与所述第三台阶部过盈配合。
  9. 如权利要求4所述的电动阀，其特征在于：所述连接座包括第一凸缘部，所述第一凸缘部自所述主体部侧壁的外周沿径向方向向外延伸，所述电动阀还包括压紧螺母，所述压紧螺母套设于所述主体部侧壁的径向外周，所述压紧螺母与所述第一凸缘部的一端面抵接，所述压紧螺母与所述阀体组件螺纹连接。
  10. 如权利要求9所述的电动阀，其特征在于：所述连接座还具有定位孔，所述阀体组件设有对应的定位柱，所述定位柱和所述定位孔相配合；所述连接座还包括第四台阶部，所述第四台阶部位于所述主体部的侧壁内周，沿所述电动阀的轴向，所述第三台阶部比所述第四台阶部更靠近所述阀芯；所述连接座还包括铆压部，所述铆压部位于所述主体部的远离阀芯的一端，所述定齿圈具有第二凸缘部，所述第二凸缘部位于所述定齿圈靠近所述阀体组件的一端，所述第二凸缘部自所述定齿圈外周壁沿径向方向向外延伸，所述定齿圈的第二凸缘部的一端面与所述第四台阶部抵接，所述第二凸缘部的外周面与所述主体部侧壁抵接，所述连接座的铆压部与所述定齿圈通过铆接固定。
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