CN209781821U - Electric valve - Google Patents

Abstract

The utility model discloses an electrically operated valve, include: a valve body and a stator; the stator includes: the electromagnetic coil is arranged on the stator shell and comprises a stator shell, an electromagnetic coil and a non-conductive plastic shell which is wrapped outside the stator shell; the stator is equipped with the passageway that link up along its axial, and at least partly along the axial of passageway of valve body is pegged graft in the passageway, and the end wall face of stator one end is equipped with the slot along the axial extension of passageway in its axial, and the one end of slot is equipped with the cap, and the axial one end of passageway can be sealed to the cap, and the motorised valve still includes: the plug connector is at least partially arranged in the slot and is abutted against the cap; the stator housing is provided with: the stator exposed part is arranged in the slot and exposed outside the plastic shell; the plug connector includes: and the conductive transition part is in conductive contact with the exposed part of the stator. The electric valve is simple in structure and convenient to assemble, the use safety can be effectively improved, and the service life of the electric valve is prolonged.

Description

Electric valve

Technical Field

the present invention relates to an electrically operated valve used in an air conditioner, a refrigerator, or the like, and more particularly to an electrically operated valve in which no discharge occurs between magnetic pole teeth of a stepping motor and a housing for housing a rotor.

Background

a conventional electric valve mounted on a refrigerator such as an air conditioner or a refrigerator is an electric valve for adjusting a flow rate of refrigerant fluid, and is disclosed in CN108468851A, and includes: the stator is a ring-shaped piece and comprises a stator shell, a coil and the like which are internally made of metal materials and provided with magnetic pole teeth, and a non-conductive plastic shell which is externally wrapped outside the stator shell, wherein the center of the stator is provided with a channel which is through along the axial direction of the stator; the connector is characterized in that at least one part of the connector is arranged in the slot, and a convex part is arranged on one side of the connector, which faces the center of the channel; the cap is arranged on the stator and seals one axial end of the channel, and the cap abuts against the plug connector to limit the position of the plug connector in the slot; the valve body, including fixing the casing on the valve body, install the rotor in the casing, install the stator outside the casing, the casing of valve body is followed the axial of stator upper channel and is pegged graft in the passageway, and the outer wall of the casing tip of valve body is equipped with along a plurality of recesses of its circumference extension, and the valve body is rotatable so that a plurality of recesses cooperate with the bellying respectively in the passageway. However, the above structure cannot ensure a complete contact state between the magnetic pole teeth on the stator case and the housing. In such a state, when a pulse voltage of several KV (e.g., a lightning strike) is instantaneously applied to the stator coil, electric discharge occurs between the magnetic pole teeth and the housing, and when the electric discharge occurs, there is a risk that a peripheral circuit is affected or the housing is broken down.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art at least.

Therefore, the utility model provides an electrically operated valve, this electrically operated valve can restrain because the discharge condition that causes between shell and stator that high-voltage pulse arouses, reduces the influence of pulse voltage to enclosing circuit or to the damage of casing.

According to the utility model discloses motorised valve, include: a valve body and a stator; the stator includes: the electromagnetic coil motor comprises a stator shell, an electromagnetic coil and a non-conductive plastic shell wrapped outside the stator shell, wherein the plastic shell is formed into a columnar shape, a containing cavity with openings at two ends is defined in the plastic shell, and the stator shell and the electromagnetic coil are arranged in the containing cavity; the stator is provided with a channel which is through along the axial direction of the stator, at least one part of the valve body is inserted in the channel along the axial direction of the channel, the end wall surface of one end of the stator in the axial direction is provided with a slot which extends along the axial direction of the channel, one end of the slot is provided with a cap which can seal one end of the channel in the axial direction, and the electric valve further comprises: the plug connector is at least partially arranged in the slot and is abutted against the cap; the stator housing is provided with: the stator exposed part is arranged in the slot and exposed outside the plastic shell; the plug connector comprises: a conductive transition portion in conductive contact with the stator bare portion.

According to the electrically operated valve of the embodiment of the utility model, the plug connector is provided with the conductive transition part which is in conductive contact with the stator shell, so that the stator shell and the plug connector can be electrically conducted, and meanwhile, the plug connector is in conductive contact with the valve body, so that the stator shell and the valve body can be electrically conducted; when the electrical signal appears unusually in solenoid, when having high-voltage pulse voltage to pass through, can pass through electrically conductive transition portion, plug connector and valve body, and then realize ground connection through the system pipeline of being connected with the valve body, finally derive high-voltage pulse, can avoid causing the damage to the motorised valve.

According to an embodiment of the invention, the end wall surface of the stator in its axial one end is provided with a bulge protruding outwards in its axial direction, the slot is located on the bulge and along the axial extension of the channel.

According to the utility model discloses an embodiment, the one end of plug connector is equipped with dorsad the outside portion of bending that extends in center of stator, the plug connector forms to the slice, the shape of slot with the shape of plug connector is unanimous, the one end of slot be equipped with the corresponding groove of bending of portion of bending, the portion of bending is pegged graft bend the inslot.

According to an embodiment of the present invention, the slot is formed as a rectangular slot perpendicular to the radial direction of the stator.

According to the utility model discloses an embodiment, the diapire of slot is equipped with the edge the axial downwardly extending of stator and with the groove of dodging of passageway intercommunication, the stator exposed portion is located dodge the bottom in groove, electrically conductive transition portion forms the edge the lower surface downwardly extending's of plug connector lamellar body, electrically conductive transition portion is pegged graft dodge the inslot.

According to the utility model discloses an embodiment, electrically conductive transition portion locates the plug connector is close to the one end of the portion of bending.

According to the utility model discloses an embodiment, electrically conductive transition portion with stator exposed portion welding links to each other.

According to the utility model discloses an embodiment, electrically conductive transition portion with stator exposed portion laser welding links to each other.

According to the utility model discloses an embodiment, the plug connector is made by having elastic sheet metal material.

According to the utility model discloses an embodiment, the plug connector orientation one side in the axle center of stator is equipped with the orientation the outstanding contact in axle center of stator, the contact is established and is kept away from the one end of the portion of bending is stopped the valve body.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

Fig. 1 is a schematic assembly diagram of a valve body and a stator of an electrically operated valve according to an embodiment of the present invention;

Figure 2 is an exploded view of an electrically operated valve according to an embodiment of the present invention;

Figure 3 is a cross-sectional view of a stator of an electrically operated valve according to an embodiment of the invention;

Figure 4 is a schematic view of a stator of an electrically operated valve according to an embodiment of the present invention with the cap and plug removed;

FIG. 5 is a top view of FIG. 4;

Figure 6 is an assembly schematic of a plug and boss in the stator of an electrically operated valve according to an embodiment of the present invention;

FIG. 7 is an enlarged view of area A of FIG. 6;

Figure 8 is a schematic structural view of a plug-in connector of an electrically operated valve according to an embodiment of the present invention;

Fig. 9 is a top view of fig. 8.

Reference numerals:

an electric valve 100;

A valve body 10;

A stator 20; a channel 21; a boss 22; a slot 23; a cap 24; a plastic housing 25; an avoidance slot 26; a stator exposed portion 27; a stator housing 28;

A plug-in unit 30; a bent portion 31; a conductive transition 32; and a contact 33.

Detailed Description

reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The electric valve 100 according to the embodiment of the present invention will be described in detail with reference to the drawings.

as shown in fig. 1 to 9, an electric valve 100 according to an embodiment of the present invention includes: valve body 10 and stator 20, stator 20 includes: a stator housing 28, electromagnetic coils, and a non-conductive plastic housing 25 that surrounds the exterior of the stator housing 28.

Specifically, the plastic case 25 is formed in a columnar shape, a housing cavity with both ends open is defined in the plastic case 25, and the stator case 28 and the electromagnetic coil are provided in the housing cavity; the stator 20 is provided with a passage 21 penetrating in an axial direction thereof, at least a portion of the valve body 10 is inserted into the passage 21 in the axial direction of the passage 21, an end wall surface of one end of the stator 20 in the axial direction thereof is provided with a slot 23 extending in the axial direction of the passage 21, one end of the slot 23 is provided with a cap 24, and the cap 24 can close one end of the passage 21 in the axial direction, and the electric valve 100 further includes: the plug connector 30, at least one part of the plug connector 30 is arranged in the slot 23, and the plug connector 30 is stopped against the cap 24; the stator housing 28 is provided with: the stator exposed part 27 is arranged on the slot 23 and exposed outside the plastic shell 25; the plug-in unit 30 includes: an electrically conductive transition 32, the electrically conductive transition 32 being in electrically conductive contact with the stator bare portion 27.

In other words, the electrically operated valve 100 according to the embodiment of the present invention mainly comprises the valve body 10 and the stator 20, the stator 20 mainly comprises the stator housing 28, the electromagnetic coil and the plastic housing 25, and the stator housing 28 includes: a stator exposed portion 27; the plug-in unit 30 includes: a conductive transition 32; the plastic shell 25 is wrapped outside the stator shell 28 and is not conductive, the plastic shell 25 is formed into a column shape, a containing cavity is defined in the plastic shell 25, two ends of the containing cavity are open, the stator shell 28 and the electromagnetic coil are arranged in the containing cavity, the stator shell 28 penetrates through the channel 21 along the axial direction of the stator shell, at least one part of the valve body 10 is inserted in the channel 21 along the axial direction of the channel 21, the end wall surface of one axial end of the stator 20 is provided with a slot 23 extending along the axial direction of the channel 21, the stator exposed part 27 is exposed outside the plastic shell 25 and is arranged in the slot 23, at least one part of the plug connector 30 is arranged in the slot 23, and the conductive transition part 32 is in conductive contact with the stator exposed part.

from this, according to the utility model discloses motorised valve 100 adopts the device that valve body 10 and stator 20 combined together, through making electrically conductive transition portion 32 on the plug connector 30 and the exposed portion 27 conductive contact of stator that exposes in the outside of plastic casing 25, it is electrically conductive between stator casing 28 and the valve body 10 to have realized, can guarantee to be complete contact state between the magnetic pole tooth on the stator casing 28 and the casing on the valve body 10, when having the impulse voltage (like thunderbolt etc.) of number KV in the twinkling of an eye on the electromagnetic coil on the stator, can not lead to producing between magnetic pole tooth and the casing and discharge, thereby can not have the circuit production influence on every side, the condition that the casing was punctured can not appear yet.

As shown in fig. 2, 4, 6 and 7, according to an embodiment of the present invention, the end wall surface of one end of the stator 20 in the axial direction is provided with a protruding portion 22 protruding outward in the axial direction, and the insertion groove 23 is provided on the protruding portion 22 and extends in the axial direction of the passage 21, so as to facilitate the arrangement of the insertion groove 23.

As shown in fig. 2, 6 to 9, preferably, the plug 30 may be made of a metal plate material having elasticity, one end of the plug 30 may be provided with a bent portion 31 extending outward away from the center of the stator 20, the plug 30 may be formed in a sheet shape, the shape of the slot 23 may correspond to the shape of the plug 30, one end of the slot 23 may be provided with a bent groove corresponding to the bent portion 31, and the bent portion 31 may be inserted into the bent groove.

Therefore, the bending part 31 is arranged on one side of the plug connector 30, the corresponding bending groove is arranged at one end of the slot 23, the bending part 31 can be inserted into the bending groove, so that one end of the plug connector 30, which is close to the conductive transition part 32, is fixed, and the other end of the plug connector is relatively movable, in the using process, the relay effect on the conductive transition part 32 can be effectively reduced, the stability of the contact point between the conductive transition part 32 of the plug connector 30 and the exposed part of the stator is ensured, and the conductive quality of the contact point is ensured.

According to an embodiment of the present invention, the insertion groove 23 may be formed as a rectangular groove body perpendicular to the radial direction of the stator 20.

Further, one end of the plug 30 close to the bending portion 31 is provided with a conductive transition portion 32.

as shown in fig. 4 to 7, in some embodiments of the present invention, the bottom wall of a portion of the slot 23 is provided with an avoiding groove 26 extending downward along the axial direction of the stator 20 and communicating with the channel 21, the exposed portion 27 of the stator is provided at the bottom of the avoiding groove 26, the conductive transition portion 32 is formed as a sheet body extending downward along the lower surface of the plug 30 and corresponding to the shape of the avoiding groove 26, and the conductive transition portion 32 is inserted into the avoiding groove 26, which is not only convenient for installation, but also can ensure the contact state between the conductive transition portion 32 and the exposed portion 27 of the stator.

According to the utility model discloses an embodiment, electrically conductive transition portion 32 links to each other with the exposed portion 27 welding of stator, has rational in infrastructure, convenient operation, and welding efficiency is high, guarantees advantages such as welded stability.

Preferably, the conductive transition 32 is laser welded to the stator bare portion 27.

in some embodiments of the present invention, the plug 30 may be punched from a metal plate with elasticity.

It should be noted that the plug-in unit 30 can be an integrally formed component, and the integrally formed structure is convenient for processing and production, and reduces the cost.

as shown in fig. 6 to 9, in some embodiments of the present invention, the plug 30 is provided with a contact 33 protruding toward the axis of the stator 20 on the side facing the axis of the stator 20, the contact 33 is provided at the end away from the bent portion 31 and abuts against the valve body 10, and the contact 33 can improve the contact rate with the valve body 10, thereby improving the grounding efficiency and the grounding connection reliability.

in summary, according to the electrically operated valve 100 of the embodiment of the present invention, the electrically conductive transition portion 32 is disposed on the plug connector 30, and the electrically conductive transition portion 32 is in electrically conductive contact with the exposed portion 27 of the stator, so that the electrical conduction between the stator housing 28 and the valve body 10 can be realized, when the electrical signal in the electromagnetic coil is abnormal, and a high-voltage pulse voltage passes through, the electrically conductive transition portion 32, the plug connector 30 and the valve body 10 can be matched with each other, thereby avoiding damage to the electrically operated valve 100; meanwhile, the bending part 31 matched with the slot 23 is arranged on the plug connector 30, so that the stability of the plug connector 30 is improved, and the stress of the conductive transition part 32 is reduced.

in the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. an electrically operated valve comprising: a valve body and a stator; the stator includes: the electromagnetic coil motor comprises a stator shell, an electromagnetic coil and a non-conductive plastic shell wrapped outside the stator shell, wherein the plastic shell is formed into a columnar shape, a containing cavity with openings at two ends is defined in the plastic shell, and the stator shell and the electromagnetic coil are arranged in the containing cavity; the stator is provided with a channel which is through along the axial direction of the stator, at least one part of the valve body is inserted in the channel along the axial direction of the channel, the stator is characterized in that the end wall surface of one end of the stator in the axial direction is provided with a slot which extends along the axial direction of the channel, one end of the slot is provided with a cap cover, the cap cover can seal one end of the channel in the axial direction, and the electric valve further comprises:

The plug connector is at least partially arranged in the slot and is abutted against the cap;

The stator housing is provided with: the stator exposed part is arranged in the slot and exposed outside the plastic shell;

The plug connector comprises: a conductive transition portion in conductive contact with the stator bare portion.

2. The electric valve according to claim 1, wherein the stator has a boss protruding outward in the axial direction at an end wall surface at one end in the axial direction, and the insertion groove is provided in the boss and extends in the axial direction of the passage.

3. The electric valve of claim 2, wherein the plug connector is formed in a sheet shape, one end of the plug connector is provided with a bent portion extending outward away from the center of the stator, the shape of the slot is identical to that of the plug connector, one end of the slot is provided with a bent groove corresponding to the bent portion, and the bent portion is inserted into the bent groove.

4. The electric valve of claim 3, wherein the slot is formed as a rectangular slot perpendicular to a radial direction of the stator.

5. The electric valve of claim 4, wherein the bottom wall of the slot is provided with an avoiding groove extending downward along the axial direction of the stator and communicating with the channel, the exposed portion of the stator is disposed at the bottom of the avoiding groove, the conductive transition portion is formed as a sheet extending downward along the lower surface of the plug connector, and the conductive transition portion is inserted into the avoiding groove.

6. The electrically operated valve of claim 5, wherein the electrically conductive transition portion is disposed at an end of the plug member close to the bending portion.

7. The electrically operated valve of claim 1, wherein said electrically conductive transition portion is welded to said stator bare portion.

8. The electrically operated valve of claim 7, wherein said electrically conductive transition portion is laser welded to said stator bare portion.

9. The electrically operated valve of claim 1, wherein said plug is made of a metal plate having elasticity.

10. the electric valve of claim 4, wherein the plug connector is provided with a contact protruding toward the axial center of the stator on a side facing the axial center of the stator, and the contact is provided at an end away from the bent portion and abuts against the valve body.