CN213479313U

CN213479313U - Electronic expansion valve

Info

Publication number: CN213479313U
Application number: CN202022231137.1U
Authority: CN
Inventors: 尤古塔纳·贝努利
Original assignee: Mind Electronics Appliance Co Ltd
Current assignee: Mind Electronics Appliance Co Ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-06-18
Anticipated expiration: 2030-10-09

Abstract

An electronic expansion valve comprising: the valve body module is integrated with a valve body and a driving piece connected with the valve body, and the driving piece is provided with a first inserting part; the control module is integrated with a circuit board shell and a circuit board positioned in the circuit board shell, the circuit board shell is provided with a second inserting part which is used for being in inserting fit with the first inserting part, and the circuit board shell is detachably connected with the valve body. The utility model provides an electronic expansion valve, but valve body module and control module plug-in cooperation do benefit to the control to the needle in order to realize the electricity and connect, and grafting position and grafting mode can be adjusted according to actual need in a flexible way, and the valve body part of valve body module can link to each other with control module's circuit board casing detachably, both can realize the fixed connection of the two, can guarantee valve body module and control module's maintenance again, change mutual noninterference, the commonality of increase part, moreover, the steam generator is simple in structure, high durability and convenient installation, and the use cost is reduced.

Description

Electronic expansion valve

Technical Field

The application relates to the field of fluid control equipment, in particular to an electronic expansion valve.

Background

The electronic expansion valve generates an electric signal by adjusting parameters, and controls the current or voltage of the expansion valve motor so as to control the size of a channel of the valve body, thereby achieving the purpose of adjusting the flow. In the related art, an electronic expansion valve is divided into a control module, a valve body-valve needle module, a driving mechanism and the like, a motor coil and the control module are generally arranged in a sealed shell of the conventional expansion valve, the motor coil and the control module are connected through PIN welding, the valve body and the valve needle module are welded into a whole to form two non-detachable modules, and the two modules are assembled by welding.

However, this type of mounting has a complicated structure, requires a high manufacturing process, requires special welding equipment, and has low production efficiency. And in case match different motorcycle types, the valve body disk seat needs to be changed, and control module and sealed casing also must change, greatly reduced the flexibility of design, increased the cost, in case certain part damages and just needs to scrap whole product, and practicality and economic nature are all relatively poor, have the space of improvement.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application is directed to provide an electronic expansion valve, which includes a valve body module and a control module that can be flexibly detached, and has a simple structure, is easy to install, has better flexibility, and can be separately replaced when a part of the structure fails, and the maintenance cost is lower.

In order to achieve the purpose, the technical scheme of the application is realized as follows:

an electronic expansion valve comprising: the valve body module is integrated with a valve body and a driving piece connected with the valve body, and the driving piece is provided with a first inserting part; the control module is integrated with a circuit board shell and a circuit board positioned in the circuit board shell, the circuit board shell is provided with a second inserting part which is used for being in inserting fit with the first inserting part, and the circuit board shell is detachably connected with the valve body.

Furthermore, the driving piece is located on a first side face of the valve body, a first connecting portion used for being detachably connected with the circuit board shell is arranged on a second side face of the valve body, and the first side face and the second side face are two adjacent side faces of the valve body.

Furthermore, the first inserting part is arranged on one side, away from the valve body, of the driving part, the circuit board shell is attached to the second side face, and the part, provided with the second inserting part, of the circuit board shell protrudes out of the first side face, so that the second inserting part is in inserting fit with the first inserting part.

Furthermore, a second connecting part is arranged at one end, far away from the second plugging part, of the circuit board shell, and the second connecting part is detachably connected with the first connecting part.

Furthermore, the first connecting portion with the second connecting portion are connected through clamping or spiro union.

Further, a movable valve needle is integrated in the valve body, and the driving part is suitable for driving the valve needle to move in the valve body when being electrified.

Further, the driving member comprises a motor coil or a stepping motor.

Furthermore, the circuit board shell is also provided with a third plugging part, and the third plugging part is used for being electrically connected with the whole vehicle wiring harness.

Further, the third insertion part and the second insertion part are respectively arranged on different sides of the circuit board shell.

Furthermore, the second inserting part is provided with at least two inserting pins, and the third inserting part is provided with at least three inserting pins.

According to the electronic expansion valve of the embodiment of the application, the valve body module and the control module are in plug-in fit to realize that the electric connection is favorable for controlling the valve needle, the plug-in position and the plug-in mode can be flexibly adjusted according to actual needs, the valve body part of the valve body module can be detachably connected with the circuit board shell of the control module, the fixed connection between the valve body module and the control module can be realized, the maintenance and the replacement of the valve body module and the control module are not interfered with each other, the universality of parts is improved, the structure is simple, the installation is convenient, the increase of the production qualification rate is facilitated, and the use.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

FIG. 1 is a schematic diagram of an electronic expansion valve according to an embodiment of the present application;

fig. 2 is a schematic structural view (another view) of an electronic expansion valve according to an embodiment of the present application;

fig. 3 is a schematic structural diagram (still another view) of an electronic expansion valve according to an embodiment of the present application.

Description of reference numerals:

the electronic expansion valve 100 is provided with a valve,

a valve body module 1, a valve body 11, a valve seat 12, a motor coil 13, a first plug-in part 14, a valve needle 15,

the control module 2, the circuit board casing 21, the circuit board 22, the second plug-in part 23, the third plug-in part 24, the screw 25.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The electronic expansion valve 100 according to the embodiment of the present application is described below with reference to fig. 1 to fig. 3, the electronic expansion valve 100 has a high modularization degree, the whole structure does not need to be replaced or maintained when a part of the structure fails, the universality of the electronic expansion valve 100 can be enhanced, the structure is simple, the fast connection is facilitated, the assembly process is simple, the production yield is improved, and the manufacturing cost is reduced.

As shown in fig. 1, an electronic expansion valve 100 according to an embodiment of the present application includes a valve body module 1 and a control module 2.

The valve module 1 is integrated with a valve body 11 and a driving member, as shown in fig. 1, the driving member is connected to the valve body 11, it should be noted that a valve cavity is provided in the valve body 11, the valve body 11 is provided with an inlet and an outlet communicated with the valve cavity, and a valve needle 15 is provided in the valve cavity, and the communication state between the inlet and the outlet, that is, the opening degree of the valve body 11 can be adjusted by adjusting the position of the valve needle 15 in the valve cavity.

The drive member may be adapted to drive the needle 15 in the valve chamber, e.g. the drive member may drive the needle 15 in the valve chamber to a position in which it disconnects the inlet from the outlet, to a position in which it completely communicates the inlet with the outlet, or to a position in which it partially communicates the inlet with the outlet. Wherein the actuating member may be actuated by applying a force to the valve needle 15 to actuate movement of the valve needle 15, such as directly contacting the valve needle 15 to actuate movement of the valve needle 15, or by applying a magnetic force by a magnetic device to actuate the valve body 11. It should be noted that the driving member may be an electric driving member, i.e. when the driving member is powered on, it can output a driving force to the valve needle 15.

As shown in fig. 1, the driving member is connected to the valve body 11 through the valve seat 12, that is, the driving member in this application is mounted to the valve body 11 through the valve seat 12 so that the driving member is integrally connected to the valve body 11.

As shown in fig. 1, the driving member is provided with a first plug-in part 14, the first plug-in part 14 may include an electrical plug-in terminal, and the first plug-in part 14 is used to electrically connect with a circuit board 22 for controlling the driving member to move, so that the circuit board 22 outputs a control signal to the driving member, thereby controlling the driving member to drive the needle 15 to move. If the driving member is a motor coil 13, the motor coil 13 can generate an induced magnetic field when current is applied, so that the valve needle 15 is driven to move up and down in the valve body 11 by magnetic force in the magnetic field, thereby controlling the opening degree of the valve body 11 to control the flow rate through the electronic expansion valve 100.

As shown in fig. 1, the control module 2 is integrated with a circuit board housing 21 and a circuit board 22, wherein the circuit board 22 is located in the circuit board housing 21, the circuit board 22 can be electrically connected with a wiring harness of the entire vehicle to receive an LIN communication signal input by the entire vehicle, and the LIN communication signal is processed by a main control chip to output a PWM voltage, and the circuit board 22 can perform diagnosis such as overvoltage, undervoltage, overtemperature, short circuit, and the like, and feed back diagnosis information to the entire vehicle. As shown in fig. 1, the circuit board housing 21 is provided with a second mating part 23 for mating with the first mating part 14.

It should be noted that the second inserting portion 23 penetrates the circuit board housing 21 and is electrically connected to the circuit board 22, and after the second inserting portion is inserted into the first inserting portion 14, the first inserting portion 14 and the second inserting portion can transmit a control signal between the circuit board 22 and the driving member, so as to output a PWM control signal received by the circuit board 22 to the driving member, thereby facilitating the driving member to control the valve needle 15.

The circuit board housing 21 is detachably connected to the valve body 11, i.e., the circuit board housing 21 is fixedly connected to the valve body 11 and can be flexibly detached. Such as circuit board housing 21, is connected to valve body 11 by threaded fasteners. From this, control module 2 and valve body module 1 in this application are two parts that can nimble dismouting respectively, can enough realize selectively realizing the electricity through the grafting cooperation of first grafting portion 14 and second grafting portion 23 and connect, guarantee to needle 15's mobility control, and control module 2 and valve body module 1 can realize quick assembly disassembly, and the maintenance and the change of two modules can not influence each other again, can realize independently changing each other noninterference, have increased the general type of part.

Therefore, the electronic expansion valve 100 is simple in structure, complex processes during product assembly are avoided, the production yield is increased, and the manufacturing cost is reduced. And the relative position of the control module 2 and the valve body module 1 can be flexibly selected and arranged, for example, the control module 2 can be arranged in parallel with the valve body module 1, and can also be arranged in perpendicular to the valve body module 1, that is, the specific positions of the first inserting part 14 and the second inserting part 23 can be flexibly set, and can be adjusted freely according to the space of the whole vehicle.

According to the electronic expansion valve 100 of the embodiment of the application, the valve body module 1 and the control module 2 are in plug-in matching to realize the electric connection to be beneficial to the control of the valve needle 15, the plug-in position and the plug-in mode can be flexibly adjusted according to actual needs, the valve body 11 part of the valve body module 1 can be detachably connected with the circuit board shell 21 of the control module 2, the fixed connection between the valve body module and the control module can be realized, the maintenance and the replacement of the valve body module 1 and the control module 2 are not interfered with each other, the universality of parts is increased, the structure is simple, the installation is convenient, the increase of the production qualification rate is facilitated.

In some embodiments, the driver is located on a first side of the valve body 11, and a second side of the valve body 11 is provided with a first connection portion for detachably connecting with the circuit board housing 21, the first side and the second side being adjacent two sides of the valve body 11.

That is to say, driving piece and circuit board casing 21 in this application are located two adjacent sides of valve body 11 respectively, as shown in fig. 1, the first side can be the upper surface of valve body 11, the second side can be the right flank of valve body 11, so that the driving piece passes through valve seat 12 and links to each other with the upper surface of valve body 11, circuit board casing 21 links to each other with the right flank of valve body 11, thus, can make the installation of valve body module 1 and control module 2 compacter, do benefit to reducing the overall length of electronic expansion valve 100, and when control module 2 and valve body module 1 pegging graft and detachably fix, can operate from the same side of valve body 11, simple to operate.

In some embodiments, the first plug-in part 14 is arranged on a side of the driving member facing away from the valve body 11, as shown in fig. 2, the driving member is arranged on an upper surface of the valve body 11, and the first plug-in part 14 is arranged on an upper end of the driving member, as shown in fig. 1, the first plug-in part 14, the driving member, the valve seat 12 and the valve body 11 are arranged in sequence in an up-down direction. The circuit board housing 21 is attached to the second side surface, and a portion of the circuit board housing 21 where the second insertion portion 23 is disposed protrudes from the first side surface, as shown in fig. 1, the circuit board housing 21 is attached to the right side surface of the valve body 11, an upper end of the circuit board housing 21 protrudes from an upper surface of the valve body 11, the protruding portion of the circuit board housing 21 is disposed with the second insertion portion 23, and the second insertion portion 23 extends toward the first insertion portion 14 to be inserted into and engaged with the first insertion portion 14. It should be noted that the upper, lower, left, and right described in the present application are only illustrated as directions in the drawings, and do not constitute a limitation on the specific structural arrangement.

In this way, the driving member and the control module 2 are compactly arranged on the upper side and the right side of the valve body 11, so that the electronic expansion valve 100 has a more compact overall structure, and the first insertion part 14 and the second insertion part 23 can be conveniently and rapidly inserted, and the circuit board housing 21 and the valve body 11 can be conveniently and detachably connected.

In some embodiments, an end of the circuit board housing 21 away from the second plugging portion 23 is provided with a second connection portion, and the second connection portion is detachably connected with the first connection portion. As shown in fig. 1, the lower end of the circuit board housing 21 is provided with a second connecting portion to be detachably connected to the valve body 11 at the lower end of the circuit board housing 21.

From this, circuit board housing 21 in this application can realize being connected with valve body module 1's grafting cooperation and detachably respectively at its upper end and lower extreme, avoids two kinds of cooperation structures the condition of mutual interference to appear, guarantees the orderliness on the structural mounting, does benefit to and improves the installation effectiveness.

In some embodiments, the first and second connection portions are connected by a snap or screw connection. If first connecting portion and second connecting portion are buckle and draw-in groove respectively to make circuit board casing 21 link to each other with 11 joints of valve body through the second connecting portion, joint complex connected mode is simple, convenient to detach, and the cost of setting is lower. Or the first connecting part is a connecting hole with internal threads, the second connecting part is a connecting boss with a screw hole, the screw hole on the connecting boss is opposite to the connecting hole along the axial direction and is connected with the connecting hole through a screw 25, so that the circuit board shell 21 is in threaded connection with the valve body 11, and the disassembly is convenient.

In some embodiments, a movable valve needle 15 is integrated in the valve body 11, and the driving member is adapted to drive the valve needle 15 to move in the valve body 11 when the driving member is powered, so that the opening degree of the valve needle 15 can be adjusted by controlling the current input of the driving member, the structure is simple, and the response speed of the valve needle 15 is high.

In some embodiments, the drive comprises a motor coil 13 or a stepper motor.

That is, the current input of the motor coil 13 can be controlled to control the magnetic field variation of the motor coil 13, so that the valve needle 15 is driven to move in the valve body 11 by the varying magnetic force, and the opening degree adjustment of the electronic expansion valve 100 is realized. Wherein, the direction of the magnetic field force can be adjusted to change the moving direction of the valve needle 15, so as to realize the adjustment of the flow of the valve cavity.

Or the current input of the stepping motor can be used for controlling the driving force output of the stepping motor, so that the valve needle 15 is directly driven by the stepping motor to move in the valve cavity, the accuracy and the reliability of the adjustment of the valve needle 15 are guaranteed, the valve needle 15 is driven by the stepping motor to move, and the response speed is high.

In some embodiments, as shown in fig. 1, 2 and 3, the circuit board housing 21 is further provided with a third plugging portion 24, the third plugging portion 24 is used for electrically connecting with the entire vehicle wiring harness, and the third plugging portion 24 is electrically connected with the circuit board 22. Thus, the LIN signal at the end of the whole vehicle can be input to the third plug-in part 24 through the whole vehicle wiring harness, so that the corresponding control signal can be output to the driving part through the circuit board 22 and the second plug-in part 23, and the driving part is further controlled to drive the valve needle 15 to move.

The third plugging part 24 can also feed back information such as fault diagnosis and the like to the whole vehicle, for example, when the circuit board 22 or the driving member has a fault or is out of order, the third plugging part 24 can output related information to the whole vehicle, so that a control end of the whole vehicle or a user can conveniently perform corresponding operations.

In some embodiments, the third mating part 24 and the second mating part 23 are each associated with a different side of the circuit board housing 21. As shown in fig. 2, the second insertion part 23 is located on the left side of the circuit board housing 21 (in the direction shown in fig. 2), and the third insertion part 24 is located on the lower side of the circuit board housing 21 (in the direction shown in fig. 2), so that the fitting direction of the second insertion part 23 and the first insertion part 14 is different from the insertion direction of the third insertion part 24 and the entire vehicle wire harness, and therefore, the third insertion part 24 and the second insertion part 23 are prevented from interfering with each other when specifically inserted, and the structural design rationality of the electronic expansion valve 100 is improved.

In some embodiments, the first plugging portion 14 is provided with at least two plugging pins, the second plugging portion 23 is provided with at least two plugging pins, and the number of the plugging pins of the first plugging portion 14 is the same as that of the plugging pins of the second plugging portion 23, so that the plugging fit between the two plugging portions is facilitated.

The third insertion part 24 is provided with at least three insertion pins so as to be connected with the whole vehicle wiring harness to transmit control commands and related signals.

In some embodiments, the voltage range of the first plug part 14 can be 9V-15V, the frequency range is 10 Hz-400 Hz, the waterproof and dustproof requirements of IP69K can be met, and the plug can be quickly plugged.

In some embodiments, the circuit board housing 21 is a plastic housing to secure the circuit board 22 within the housing for sealing protection of the circuit board 22. And spacing post and support column are led spacing in the circuit board casing 21, and circuit board 22 can be fixed to circuit board casing 21 through support column hot melt or beat glue, screw 25 mode on, circuit board casing 21 can satisfy 150 ℃ high temperature environment and use.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electronic expansion valve (100), comprising:

the valve body module (1), the valve body module (1) integrates a valve body (11) and a driving piece connected with the valve body (11), and the driving piece is provided with a first inserting part (14);

the control module (2), the control module (2) integration has circuit board casing (21) and is located circuit board (22) in circuit board casing (21), circuit board casing (21) are equipped with be used for with first grafting portion (14) grafting complex second grafting portion (23), circuit board casing (21) with valve body (11) detachably links to each other.

2. An electronic expansion valve (100) according to claim 1, wherein the drive member is located at a first side of the valve body (11), and a second side of the valve body (11) is provided with a first connection portion for detachable connection to the circuit board housing (21), the first and second sides being adjacent sides of the valve body (11).

3. The electronic expansion valve (100) according to claim 2, wherein the first insertion portion (14) is disposed on a side of the driving member facing away from the valve body (11), the circuit board housing (21) is attached to the second side surface, and a portion of the circuit board housing (21) where the second insertion portion (23) is disposed protrudes from the first side surface, so that the second insertion portion (23) is inserted into and engaged with the first insertion portion (14).

4. An electronic expansion valve (100) according to claim 2, wherein an end of the circuit board housing (21) remote from the second plug-in part (23) is provided with a second connecting part, which is detachably connected to the first connecting part.

5. An electronic expansion valve (100) according to claim 4, wherein the first connection portion and the second connection portion are connected by snapping or screwing.

6. An electronic expansion valve (100) according to claim 1, wherein a movable valve needle (15) is integrated in the valve body (11), the actuation member being adapted to actuate the valve needle (15) in a movement within the valve body (11) when energized.

7. An electronic expansion valve (100) according to claim 1, wherein the drive comprises a motor coil (13) or a stepper motor.

8. The electronic expansion valve (100) according to claim 1, wherein the circuit board housing (21) is further provided with a third plug-in part (24), the third plug-in part (24) being adapted to be electrically connected to a vehicle wiring harness.

9. The electronic expansion valve (100) according to claim 8, wherein the third plug-in part (24) and the second plug-in part (23) are each associated with a different side of the circuit board housing (21).

10. An electronic expansion valve (100) according to claim 8, wherein the second plug part (23) is provided with at least two plug pins and the third plug part (24) is provided with at least three plug pins.