CN207364390U

CN207364390U - Motor-driven valve

Info

Publication number: CN207364390U
Application number: CN201721068886.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2017-08-24
Filing date: 2017-08-24
Publication date: 2018-05-15
Anticipated expiration: 2027-08-24

Abstract

A kind of motor-driven valve includes stator module, rotor, circuit board module, casing and valve module, stator module is set around rotor, casing off stator module and rotor, stator module and circuit board module are electrically connected, motor-driven valve is formed with valve port, rotor can drive valve module to be moved with respect to valve port, motor-driven valve further includes box body, circuit board module is arranged in box body, box body includes housing and lid, the junction of housing and lid is provided with sealing ring, and sealing ring is pressed between housing and lid, and lid and housing are fixedly connected by welding；Such motor-driven valve is simple in structure and improves the sealing reliability of circuit board module.

Description

Motor-driven valve

【Technical field】

It the utility model is related to a kind of refrigeration system, and in particular to a kind of volume control device.

【Background technology】

With the raising of the requirement to control accuracy, refrigeration system gradually adopts motor-driven valve as flow regulator.Electricity Dynamic valve includes at least circuit board module, and circuit board module is corroded, it is necessary to circuit board module is sealed in order to prevent how A kind of motor-driven valve simple in structure by circuit board module sealing is provided to be a problem to be solved.

【Utility model content】

The purpose of this utility model is to provide the electricity of sealing reliability that is a kind of simple in structure and improving circuit board module Dynamic valve.

To achieve the above object, the embodiment of the utility model adopts the following technical scheme that：A kind of motor-driven valve, including stator Component, rotor, circuit board module, casing and valve module, the stator module are set around the rotor, described sleeve pipe isolation The stator module and the rotor, the stator module and the circuit board module are electrically connected, and the motor-driven valve is formed with valve Mouthful, the rotor can drive the relatively described valve port movement of valve module, and the motor-driven valve further includes box body, the circuit board module It is arranged in the box body, the box body includes housing and lid, the housing and the non-integral shaping of the lid, the housing The junction of the lid is provided with sealing ring, the sealing ring is pressed between the housing and the lid, described Lid and the housing are fixedly connected by welding.

The box body of motor-driven valve includes housing and lid two parts are formed separately, and facilitates the company of die forming, housing and lid The place of connecing is provided with sealing ring, and lid and housing are fixedly connected by welding, such sealing structure, disclosure satisfy that wanting for sealing Ask, simple in structure, technique is simple.

【Brief description of the drawings】

Fig. 1 is the structure diagram of the first embodiment of the motor-driven valve of the utility model；

Fig. 2 is the dimensional structure diagram of the lid in Fig. 1；

Fig. 3 is the dimensional structure diagram of the combination of the housing and stator module in Fig. 1；

Fig. 4 is the dimensional structure diagram of sealing ring in Fig. 1；

Fig. 5 is the close-up schematic view in A portions in Fig. 1；

Fig. 6 is the structure diagram of second of embodiment of the motor-driven valve of the utility model；

Fig. 7 is the close-up schematic view in the B portions in Fig. 6；

Fig. 8 is the structure diagram of the lid in Fig. 6.

【Embodiment】

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：

Motor-driven valve in the present embodiment is mainly used in refrigeration system, for adjusting the working media in refrigeration system Flow.

With reference to referring to Fig. 1 and Fig. 6, motor-driven valve 100 include stator module 10, rotor 20, circuit board module 30, casing 40, Valve module and valve body 50；Wherein stator module 10 includes coil 11 and coil rack 12, and valve module includes spool 60；Motor-driven valve Further include transmission device 70；Valve body 50 shapes valve port 51 or fixed component, the first passage 52 and second for being formed with valve port 51 Passage 53；In the present embodiment, stator module 10 is set around rotor 20, i.e., stator module 10 is arranged at the periphery of rotor 20, set Pipe 40 isolates stator module 10 and rotor 20, the coil 11 and circuit board module 30 of stator module 10 are electrically connected, and rotor 20 can Band movable valve plug 60 moves, and spool 60 can be relatively close or be moved away from valve port 51, so that first passage 52 and second is logical The connection sectional area in road 53 changes, and then adjusts the flow of the system at first passage 52 and the place of second channel 53.In order to Convenient description, defines the arragement direction of the valve body of motor-driven valve, stator module and circuit board to be axial, the extension direction of circuit version For radially；The direction of motion of spool 60 is defined to be axial, the arragement direction of stator module and rotor for radially, radially with axial direction It is vertically arranged.

Motor-driven valve 100 includes box body 80, and circuit board module 30 is arranged in box body 80, and box body 80 includes housing 1 and lid 2, housing 1 and lid 2 are injected plastics material, the 2 non-integral shaping of housing 1 and lid, i.e. housing 1 and lid 2 individually shapes, Certain housing can be integrally formed with other parts of the motor-driven valve beyond lid, such as stator module, and lid can also be with Other parts of motor-driven valve beyond housing are integrally formed.Circuit board module 30 is corroded in order to prevent, housing 1 and lid 2 Need sealed set, in the present embodiment, the junction of housing 1 and lid 2 be provided with sealing ring 3, lid 2 and housing 1 pass through it is super Sound wave welding is fixedly connected, and such sealing structure, disclosure satisfy that the requirement of sealing, simple in structure, technique is simple.

In following embodiments, lid 2 includes the first limiting section and the first fixed part, and housing 1 includes the second limiting section and the Two fixed parts, sealing ring 3 are arranged between the first limiting section and the second limiting section and by the first limiting sections and the second limiting section pressure Tightly, welded between the first fixed part and the second fixed part and the portion that forms a fixed connection, be fixedly connected with portion than sealing ring close to electronic The outer rim of valve is set；So sealing ring can be compressed by welded cover and housing, improve leakproofness, while the portion of being fixedly connected is more Leakproofness and connection reliability can be further improved by being set close to outer rim.

In the present embodiment, motor-driven valve 100 includes injection molding body, and injection molding body is with including coil 11 and the grade parts of coil rack 12 Formed for injection inserts by injection, injection molding body is formed with the insulation of stator module 10 in the periphery of coil 11 and coil rack 12 Layer 101, can prevent stator module 10 by working media or air corrosion, and in the present embodiment, injection molding body also forms housing 1, So housing 1 and the insulating layer 101 of stator module 10 is integrally formed, and the connection of the housing 1 being shaped so as to and stator module 10 is more Reliably, while connection structure is simpler, also advantageously improves the leakproofness between housing 1 and stator module 10.

Motor-driven valve 100 further includes Plug Division 90, and Plug Division 90 includes contact pin 91 and patches housing 92, and injection inserts further includes Contact pin 91, injection molding body, which further includes, patches housing 92, and plug receptacle is stretched into one end of contact pin 91, and the other end of contact pin 91 stretches into box body 80 It can be electrically connected with circuit board module 30；So it is not required to set the connection structure of connector and housing so that overall structure is more Simply, connect also relatively reliable.

Referring to Fig. 2, lid 2 includes matrix 201 and connecting portion 202, connecting portion 202 and the shaping of 201 integrated injection molding of matrix, Lid 2 is connected with housing 1 by connecting portion 202, fixes and seal.Connecting portion 202, which includes the first limiting section 21 and first, to be fixed Portion 22, the first limiting section 21 limit position of the sealing ring 3 relative to lid 2, and the welding that the first fixed part 22 limits with housing 1 is consolidated Positioning is put.First limiting section 21 includes the first mounting portion 211 and the first abutting part 212, and in the present embodiment, sealing ring 3 is sheathed on First mounting portion, 211 periphery, sealing ring 3 are pressed in housing 1 by the first abutting part 212.In the present embodiment, the first mounting portion 211 be annular protrusion, and the inner periphery of annular protrusion is set around matrix, and certain first mounting portion 211 can also be the protrusion of interruption Ring, it is new in this practicality relative to the structure of the first mounting portion 211 of the radial position of lid 2 can to play limitation sealing ring 3 In the range of type limits.First abutting part 212 is set around 211 periphery of the first mounting portion, and the first abutting part 212 is used to limit close Seal 3 relative to lid 2 axial location.Sealing ring 3 is sheathed on the periphery of the first mounting portion 211, and sealing ring 3 is supported by first Socket part 212 is pressed in housing 1.The width of first abutting part 212 slightly larger than sealing ring 3 the distance between internal-and external diameter, i.e., first The distance of the first fixed part of periphery distance 22 of mounting portion 211 so will not slightly larger than the distance between internal-and external diameter of sealing ring 3 Hinder the compression of sealing ring 3.Sealing ring 3 is preshaped part in the present embodiment, and the sealing ring 3 that will be shaped is sheathed on One mounting portion 211, and housing 1 is pressed on by the first abutting part 212；Certain sealing ring 3 can also be by can quickly solidify Glue is coated on and is formed between the first abutting part 212 and the first mounting portion 211.

First fixed part 22 is surrounded on the first abutting part 212 and sets；The first fixed part 22 includes concave part in the present embodiment 221, the second fixed part 12 is lug boss, is conducive to the positioning of lid and groove and improves leakproofness.

With reference to referring to Fig. 1 and Fig. 3, housing 1 includes side wall 101 and bottom 102, and side wall 101 is formed in housing with bottom 102 Chamber.Side wall 101 includes stage portion 103, and stage portion 103 is forms from the free end of side wall 101 to 102 heavy platform of bottom, stage portion 103 include step surface 104 and side 105, and step surface 104 is radially extended approximately along motor-driven valve, and side 105 is approximately along motor-driven valve It is axially extending, actual product may have certain manufacturing tolerance.Second limiting section 11 and the second fixed part 12 form in side wall 101, the second limiting section 11 includes the second abutting part 111, and the second abutting part 111 includes step surface 104,212 He of the first abutting part Step surface 104 compress sealing ring 3 so that sealing ring 3 produce axial deformation, step surface 104 in a ring, the width of step surface 104 Slightly larger than the distance between 3 internal-and external diameter of sealing ring, the deformation after being compacted in favor of sealing ring 3.

Second fixed part 12 includes the lug boss 121 formed from the free end of side wall 101,121 medial surface of lug boss and platform The alignment of side 105 in rank portion 103 is set, and so facilitates the assembling of housing 1 and lid 2, the interior lateral surface of lug boss 121 and first Certain gap, convenient installation are spaced between the concave part of fixed part 22, while forms weld flash groove 210, weld flash groove Unnecessary material can be accommodated, contact area is welded in increase, improves the bonding strength of welding.

Second fixed part 12 further includes the muscle portion 122 for the free end for being arranged at lug boss 121, and muscle portion 122 is from lug boss 121 Free end rise to the top cross-section of muscle portion 122 and be gradually reduced, i.e. muscle portion 122 and lug boss 121 is integrally formed, along motor-driven valve Axial, the sectional area of muscle portion 122 is gradually reduced from muscle portion 122 and the free end of connecting portion to the muscle portion 122 of lug boss 121, and one Aspect favorably improves the bonding strength of muscle portion 122 and lug boss 121, and the top of another aspect muscle portion 122 is solid with the first of lid 2 Determine portion 22 to contact, since the section at the top of muscle portion 122 is smaller, reaches muscle portion 122 and melt and be welded and fixed the energy of needs and get over It is small, be conducive to energy saving, also help the influence reduced to the other parts of lid and housing.

Second fixed part 12 is welded and fixed with the first fixed part 22 at muscle portion 122, and muscle portion 122 is melted after welding, more The material of remaining muscle portion 122 enters weld flash groove；I.e. at least part muscle portion 122 enters flash groove after melting.

Bottom 102 is formed with isolation part 106, and isolation part 106 isolates circuit board module 30 and casing 40, so works as motor-driven valve During work, it can be entered with disrance sleeve 40 due to dewdrop caused by cold and hot change in box body 80, further improve circuit board module 30 leakproofness, and then improve the service life of circuit board module.Circuit board module 30 includes circuit board 301 and electrical component, Circuit board 301 is provided with through hole, and isolation part 106 passes through through hole so that circuit board can close proximity to stator module, circuit board with Stator module is connected by wire connection terminal, can so reduce the length of wire connection terminal, be conducive to improve connection reliability and Stability.

Referring to Fig. 5, sealing ring 3 is assembled with lid 2, lid 2 and the combination of sealing ring 3 is installed with housing 1, by lid 2 The periphery of the first mounting portion 211 be limited in the inner circumferential of side wall 101, the insertion of lug boss 121 first of the second fixed part 12 is fixed The concave part 221 in portion 22, forms flash groove 210, muscle portion 122 is melted after ultrasonic bonding between lug boss 121 and concave part 221 Welded connection is formed between the first fixed part 22 and the second fixed part 12, the first abutting part 212 and the second abutting part 111 will Sealing ring 3 compresses and deforms to form sealing, includes in the outer rim lid 2 and housing 1 of sealing formed with limiting section, limiting section 2 outer edge 208 of side wall free end 108 and lid of housing 1, limiting section, which is used to limit, welds the opposite of rear cover body 2 and housing 1 Distance, ensures sealing ring compression deformation and then ensures leakproofness.

Fig. 6 is the structure diagram of second of embodiment of electric expansion valve；With reference to referring to Fig. 6 to Fig. 8, with the first The main distinction of embodiment is the limit method of sealing ring.In the present embodiment, lid 2 includes matrix 201 and connecting portion 202, connecting portion 202 includes annular protrusion 203, and convex annular 203 rises to protrude from matrix 201 and formed, the shaping of 203 periphery of annular protrusion There is mounting groove 204；In the present embodiment, the first limiting section 21 includes the first mounting portion 211 and the first abutting part 212, the first installation Portion 211 includes the annular protrusion 203 integrally formed with the matrix 201 of lid and is arranged at the mounting groove 204 of annular protrusion, close Seal 3 is contained in mounting groove 204, and the outer rim of sealing ring 3 protrudes from the outer wall setting of annular protrusion, the bottom surface of mounting groove 204 The first abutting part 212 is formed, the two side of mounting groove 204 is spacing to sealing ring 3, and the annular protrusion 203 of lid 2 passes through housing 1 Step surface 104 it is spacing, the side 105 of stage portion forms the second abutting part 111, the second abutting part 111 and the first abutting part 212 Sealing ring 3 is compressed into deformation and forms sealing, in present embodiment, lid 2 and housing 1 form sealing in side, that is, exist Electric expansion valve is formed radially sealing, spacing more preferable between such sealing ring 3 and lid, while will not be due to welded cover 2 and 1 pressure of housing not enough cause the deformation of sealing ring 3 not enough or excessive cause the sealing between lid and housing now Property reduce.

In the present embodiment, include side wall 101 and bottom 102 with reference to referring to Fig. 3, housing 1, side wall 101 is formed with bottom 102 Housing cavity.Side wall 101 includes stage portion 103, and stage portion 103 is to be formed from the free end of side wall 101 to 102 heavy platform of bottom, Stage portion 103 includes step surface 104 and side 105.Second abutting part 111 includes side 105, and sealing ring 3 is pressed in first and supports Between socket part 212 and side 105, in a ring, step surface 104 contacts setting to step surface 104 with the annular protrusion 203 of lid 2.

It should be noted that：Above example is merely to illustrate the utility model and not limits described by the utility model Technical solution, although this specification has been carried out being described in detail with reference to the above embodiments to the utility model, this Field it is to be appreciated by one skilled in the art that person of ordinary skill in the field still can modify the utility model Or equivalent substitution, and the technical solution of all spirit and scope for not departing from the utility model and its improvement, it should all cover In the right of the utility model.

Claims

1. a kind of motor-driven valve, including stator module, rotor, circuit board module, casing and valve module, the stator module surround The rotor is set, and described sleeve pipe isolates the stator module and the rotor, the stator module and the circuit board module It is electrically connected, the motor-driven valve is formed with valve port, and the rotor can drive the relatively described valve port movement of valve module, its feature exists In：The motor-driven valve further includes box body, and the circuit board module is arranged in the box body, and the box body includes housing and lid The junction of body, the housing and the non-integral shaping of the lid, the housing and the lid is provided with sealing ring, described close Seal is pressed between the housing and the lid, and the lid and the housing are fixedly connected by welding.

2. motor-driven valve according to claim 1, it is characterised in that：The lid, which includes the first limiting section and first, to be fixed Portion, the housing include the second limiting section and the second fixed part, and the sealing ring is arranged at first limiting section and described Compressed between two limiting sections and by first limiting section and second limiting section, first fixed part and described second is consolidated Determine to weld between portion and the portion that forms a fixed connection, described to be fixedly connected with portion more outside close to the footpath of the motor-driven valve than the sealing ring Edge is set.

3. motor-driven valve according to claim 2, it is characterised in that：First limiting section includes the first mounting portion and first Abutting part, first mounting portion include annular protrusion, and first abutting part is arranged at the periphery of first mounting portion, institute The periphery that sealing ring is sheathed on first mounting portion is stated, the sealing ring is by the first abutting part axial compression in described Second limiting section；The housing includes side wall and bottom, and the side wall forms housing cavity, the side wall shaping with the bottom There is stage portion, the stage portion is formed from the free end of the side wall to the bottom notch, and the stage portion includes step surface And side, second limiting section include the second abutting part, second abutting part includes the step surface, the sealing ring pressure Tightly between first abutting part and the step surface.

4. motor-driven valve according to claim 2, it is characterised in that：First limiting section includes the first mounting portion and first Abutting part, first mounting portion include annular protrusion and mounting groove, and the sealing ring is placed in the mounting groove, the installation First abutting part is formed on the bottom of groove, and the sealing ring is spacing in described second by the first abutting part radial compaction Portion；The housing includes side wall and bottom, and housing cavity formed on the side wall and the bottom, and second limiting section includes the Two abutting parts, the side wall are formed with stage portion, and the stage portion is formed from the free end of the side wall to the bottom notch, The stage portion includes step surface and side, and second abutting part includes the side, and the sealing ring is pressed in described Between one abutting part and the side.

5. the motor-driven valve according to claim 3 or 4, it is characterised in that：First fixed part is arranged at first limit The outer radial periphery in position portion, first fixed part include concave part, and second fixed part includes forming in the convex of the side wall The portion of rising, the lug boss are set around second limiting section, and the lug boss is inserted into the concave part and is fixedly connected.

6. motor-driven valve according to claim 5, it is characterised in that：Second fixed part, which further includes, is arranged at the protrusion The muscle portion of the free end in portion, the muscle portion and the lug boss are integrally formed, and along the axial direction of the motor-driven valve, the muscle portion is cut Area is gradually reduced from the free end of the muscle portion and connecting portion to the muscle portion of the lug boss, second fixed part with First fixed part is welded and fixed at the muscle portion, and after welding, at least partly described muscle portion is melted.

7. motor-driven valve according to claim 6, it is characterised in that：Annular is formed between the lug boss and the concave part Gap, the annular gap are flash groove, and the part muscle portion of thawing enters the flash groove, and the volume of the flash groove is big In the volume equal to the muscle portion.

8. according to the motor-driven valve described in claim 1 or 2 or 3 or 4 or 6 or 7, it is characterised in that：The stator module includes line Circle and coil rack, the coil are electrically connected with the circuit board module, and being formed using the stator module as injection inserts includes The injection molding body of the housing and the insulating layer of the stator module.

9. motor-driven valve according to claim 5, it is characterised in that：The stator module includes coil and coil rack, institute Coil is stated to be electrically connected with the circuit board module, using the stator module as injection inserts formed include the housing with it is described fixed The injection molding body of the insulating layer of sub-component.

10. motor-driven valve according to claim 8, it is characterised in that：The motor-driven valve further includes connector, the connector Including contact pin and patch housing, the injection inserts further includes contact pin, the injection molding body with it is described patch housing integrated injection molding into Shape.

11. according to the motor-driven valve described in claim 1 or 2 or 3 or 4 or 6 or 7 or 9 or 10, it is characterised in that：The wiring board Component includes circuit board and electrical component, and the electrical component is electrically connected by the circuit of the circuit board, and the circuit version applies It is covered with insulating layer.

12. motor-driven valve according to claim 5, it is characterised in that：The circuit board module includes circuit board and the first device of electricity Part, the electrical component are electrically connected by the circuit of the circuit board, and the circuit version is coated with insulating layer.