CN213954363U - Electronic expansion valve and refrigeration equipment - Google Patents
Electronic expansion valve and refrigeration equipment Download PDFInfo
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- CN213954363U CN213954363U CN202023026608.1U CN202023026608U CN213954363U CN 213954363 U CN213954363 U CN 213954363U CN 202023026608 U CN202023026608 U CN 202023026608U CN 213954363 U CN213954363 U CN 213954363U
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- expansion valve
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Abstract
The utility model discloses an electronic expansion valve and refrigeration plant. The electronic expansion valve comprises a valve seat, a nut and a connecting piece; the nut is arranged on the valve seat; the connecting sheet is arranged on the nut; the connecting piece includes connecting portion and rib, and the one end of connecting portion is fixed in the nut, the other end and disk seat fixed connection, and the rib is at least partly fixed in the nut, and connecting portion are the contained angle with the rib and are connected. The utility model discloses among the technical scheme electronic expansion valve, the nut is installed in the disk seat, and the connection piece is installed in the nut, and the connection piece includes connecting portion and rib, and the one end of this connecting portion is fixed in the nut, the other end and disk seat fixed connection to realize the fixed connection function of nut and disk seat. This rib is the contained angle with connecting portion and is connected to reach the effect of the intensity of reinforcing connection piece, simultaneously through being fixed in the nut with at least part of rib in, strengthened the joint strength of connection piece and nut, and then reach the effect that improves the mounting structure stability of nut and disk seat.
Description
Technical Field
The utility model relates to a fluid control part technical field, in particular to electronic expansion valve and refrigeration plant.
Background
In air conditioners, refrigerators, heat pump water heaters, and various cooling and heating apparatuses, an electronic expansion valve is generally used to regulate the flow rate of a fluid.
In the related art, an electronic expansion valve generally includes a valve seat assembly, a nut assembly and a valve needle assembly, the valve seat assembly is provided with a valve port, and the valve needle assembly moves relative to the nut assembly to drive the valve needle to open or close the valve port, so as to achieve a function of regulating a flow rate. In the prior art, the problem of poor structural stability exists between the nut and the valve seat.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electronic expansion valve aims at solving among the prior art problem that structural stability is poor between nut and the disk seat.
In order to achieve the above object, the present invention provides an electronic expansion valve, which comprises a valve seat, a nut and a connecting sheet; the nut is mounted on the valve seat; the connecting piece is arranged on the nut; the connecting piece comprises a connecting portion and a reinforcing portion, one end of the connecting portion is fixed to the nut, the other end of the connecting portion is fixedly connected with the valve seat, at least part of the reinforcing portion is fixed to the nut, and the connecting portion is connected with the reinforcing portion in an included angle mode.
In an embodiment of the invention, the connecting portion is arranged to extend in a radial direction of the nut, and the reinforcing portion is arranged to extend in an axial direction of the nut.
In an embodiment of the present invention, the electronic expansion valve further includes a valve rod and a valve needle sleeve disposed in the nut, and the valve rod is connected to the valve needle sleeve; the nut includes:
a tube body in threaded engagement with the valve stem; and
the mounting part is connected with the tube body and is positioned at one end, close to the valve needle sleeve, of the tube body; the connecting portion is mounted on the mounting portion, and the reinforcing portion extends in the axial direction of the mounting portion.
In an embodiment of the present invention, the reinforcing portion extends from the connecting portion toward the direction of the pipe body.
In an embodiment of the present invention, the reinforcing portion is embedded in the mounting portion.
The utility model discloses an in the embodiment, connecting portion keep away from the surface of body with the installation department is kept away from the terminal surface parallel and level of body.
In an embodiment of the present invention, the reinforcing portion is provided with a first through hole for guiding the injection molding material to pass through.
In an embodiment of the present invention, the electronic expansion valve further includes a guide sleeve and a valve core seat disposed on the valve seat, one end of the guide sleeve is fixedly connected to the valve core seat, and the other end is fixedly connected to the mounting portion; the valve needle sleeve is matched with the guide sleeve in a guiding mode.
In an embodiment of the present invention, the reinforcing portion extends from the connecting portion toward the direction away from the pipe body.
In an embodiment of the present invention, the reinforcement portion has a guide section extending from the mounting portion, and the valve needle sleeve is guided and fitted to the inner wall of the guide section.
In an embodiment of the present invention, the inner diameter of the guide section is smaller than or equal to the inner diameter of the mounting portion.
In an embodiment of the present invention, the axial length of the guiding section is greater than or equal to the axial length of the valve needle sleeve.
The utility model discloses an in the embodiment, be equipped with the valve core case on the disk seat, the rib deviates from the one end of body extend to with the valve core case is fixed, the valve needle cover with rib direction cooperation is in order to be close to or keep away from the motion of valve core case.
In an embodiment of the present invention, the connecting portion and the reinforcing portion are an integral structure.
In an embodiment of the present invention, the connecting portion is a circular ring structure, and the reinforcing portion is formed by bending an inner end of the connecting portion.
In an embodiment of the present invention, the connecting piece and the nut are integrally formed by injection molding.
In an embodiment of the present invention, the mounting portion includes:
the transition section is connected with the pipe body and is of a conical structure; and
the fixing part is connected with one side of the transition section, which deviates from the pipe body, and the connecting piece is arranged on the fixing part; the outer diameter of the fixing part is larger than that of the pipe body, and the wall thickness of the fixing part is larger than that of the transition section; the position of the fixed part corresponding to the connecting part is provided with a thickening flange.
In order to achieve the above object, the present invention further provides a refrigeration device, comprising the above electronic expansion valve; the electronic expansion valve comprises a valve seat, a nut and a connecting sheet; the nut is mounted on the valve seat; the connecting piece is arranged on the nut; the connecting piece comprises a connecting portion and a reinforcing portion, one end of the connecting portion is fixed to the nut, the other end of the connecting portion is fixedly connected with the valve seat, at least part of the reinforcing portion is fixed to the nut, and the connecting portion is connected with the reinforcing portion in an included angle mode.
The utility model discloses among the technical scheme electronic expansion valve, the nut is installed in the disk seat, and the connection piece is installed in the nut, and the connection piece includes connecting portion and rib, and the one end of this connecting portion is fixed in the nut, the other end and disk seat fixed connection to realize the fixed connection function of nut and disk seat. This rib is the contained angle with connecting portion and is connected to reach the effect of the intensity of reinforcing connection piece, simultaneously through being fixed in the nut with at least part of rib in, increased the connection area that connection piece and nut are fixed, strengthened the joint strength of connection piece and nut, and then reach the effect that improves the mounting structure stability of nut and disk seat.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of the nut and connecting piece assembly according to the present invention;
fig. 2 is a schematic structural view of an embodiment of the electronic expansion valve of the present invention, in which the reinforcement portion extends toward the tube body;
fig. 3 is a schematic structural view of another embodiment of the electronic expansion valve of the present invention, in which the reinforcement portion extends toward the tube body;
FIG. 4 is a schematic structural view of another embodiment of the nut and the connecting piece assembly according to the present invention;
fig. 5 is a schematic structural view of an embodiment of the electronic expansion valve reinforcement portion of the present invention extending away from the tube body.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
321 | First through |
| 200 | |
410 | Valve |
| 210 | |
420 | Valve needle part |
| 220 | |
421 | Valve |
| 221 | |
422 | Valve |
| 222 | Fixing |
500 | |
| 223 | Thickened |
501 | |
| 300 | |
600 | |
| 310 | Connecting |
700 | |
| 320 | Reinforcing |
800 | |
| 320A | Guide section |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an electronic expansion valve.
In the embodiment of the present invention, as shown in fig. 1 to 5, the electronic expansion valve includes a valve seat assembly, a nut assembly, a valve needle assembly, a rotor assembly 600, and a housing 700.
The valve seat assembly includes a valve seat 100 and a valve cartridge seat 500, the valve cartridge seat 500 having a valve port 501; the housing 700 is disposed on the valve seat 100 and is abutted with the valve seat 100 to form a receiving cavity for receiving the nut assembly, the valve needle assembly and the rotor assembly 600, so as to realize the integrity and the tightness of the whole structure of the electronic expansion valve. The nut component comprises a nut 200 and a connecting sheet 300, the nut 200 is fixedly connected with the valve seat through the connecting sheet 300, the valve needle component comprises a valve rod 410 and a valve needle part 420, the valve needle component is movably arranged in the nut 200, the valve rod 410 is fixedly connected with the rotor component 600, the valve rod 410 is driven by the rotor component 600 to rotate in the nut 200 so as to realize axial movement, the valve needle part 420 further moves up and down along the axial direction of the nut 200, the valve port 501 close to the valve core seat 500 or the valve port 501 far away from the valve core seat 500 moves, the function of plugging or opening the valve port 501 is further realized, and meanwhile, the function of regulating the opening degree of the electronic expansion valve and further regulating the fluid flow can be realized according to the distance between the regulating valve needle part 420 and the.
In this embodiment, the nut 200 is fixedly mounted on the valve seat 100 by a connecting piece 300, the connecting piece 300 includes a connecting portion 310 and a reinforcing portion 320, and the connecting portion 310 is connected with the reinforcing portion 320 at an included angle; one end of the connecting part 310 is fixed to the nut 200, and the other end is fixedly connected to the valve seat 100; the reinforcement 320 is at least partially secured to the nut 200.
It can be understood that, connecting portion 310 plays the effect of coupling nut 200 and disk seat 100, the reinforcing part 320 plays the effect of reinforcing connection piece 300, be the contained angle through reinforcing part 320 and connecting portion 310 and be connected, compare with current slice connection piece 300, the support on the equidirectional not has been increased, thereby the intensity of connection piece 300 has been strengthened, simultaneously through being fixed in nut 200 with at least part of reinforcing part 320, with the area of being connected of increase connection piece 300 and nut 200, reach the effect of reinforcing connection piece 300 and nut 200 fixed strength, and then guarantee nut 200 and disk seat 100's mounting structure's stability.
In practical applications, the included angle between the reinforcing portion 320 and the connecting portion 310 may be determined according to practical situations, for example, the included angle may be an acute angle, a right angle, or an obtuse angle, and the specific angle may not be particularly limited. When the reinforcing part 320 is connected with the connecting part 310 at an acute angle, one end of the reinforcing part 320 connected with the connecting part 310 is located in the nut 200, and the other end extends towards the direction departing from the inner cavity of the nut 200, at this time, the reinforcing part 320 can partially extend out of the outer wall of the nut 200, or the reinforcing part 320 is completely wrapped by the nut 200, so that the installation area of the connecting piece 300 and the nut 200 is increased. When the reinforcing portion 320 is connected to the connecting portion 310 at a right angle, the reinforcing portion 320 may extend along the axial direction of the nut 200, and may extend upward or downward (upward and downward in the drawing), so as to reinforce the strength of the connecting piece 300 and also reinforce the strength of the pipe wall of the nut 200. When the reinforcing part 320 is connected with the connecting part 310 at an obtuse angle, one end of the reinforcing part 320 far away from the connecting part 310 can extend towards the inner cavity of the nut 200, and at this time, in order to avoid the influence of the reinforcing part 320 on the valve needle assembly, the reinforcing part 320 does not extend out of the tube wall of the nut 200, so that the reinforcing part 320 is completely wrapped by the nut 200, and the guiding effect on the valve needle assembly is not influenced while the strength is increased.
Alternatively, the connection position of the reinforcing part 320 and the connecting part 310 may be determined according to actual conditions, for example, the reinforcing part 320 may be connected to the end or middle part of the connecting part 310. The reinforcing portion 320 and the connecting portion 310 may be formed by welding and fixing in a separate structure, or may be formed by bending in an integral structure, in an embodiment, the connecting portion 310 may be in a circular ring shape, and the reinforcing portion 320 is formed by bending an inner end of the connecting portion 310.
It will be appreciated that the shape of the reinforcing portion 320 may be a block structure or a continuous circular ring structure. When the reinforcing parts 320 are block-shaped structures, considering the self circular ring-shaped structures of the nut 200 and the valve seat 100, the connecting part 310 can be a circular ring structure to fixedly connect the nut 200 and the valve seat 100, and at this time, the plurality of reinforcing parts 320 can be arranged at intervals and uniformly distributed on the periphery of the connecting part 310, so that the plurality of reinforcing parts 320 are uniformly arranged around the periphery of the nut 210 at intervals, the purpose of balancing the fixing effect of the connecting piece 300 and the nut 200 by arranging the plurality of spaced reinforcing parts 320 is achieved, and the stability of the connecting piece 300 and the nut 200 is further improved. When the reinforcement part 320 is a continuous annular structure, the reinforcement part 320 forms a concentric ring structure with the nut 200 around the circumference of the nut 200 to enhance the connection reliability of the nut 200 and the connection piece 300.
In one embodiment, the connecting portion 310 is welded to the valve seat 100 to ensure structural stability and prevent the electronic expansion valve from being disengaged due to high internal pressure. The connecting portion 310 and the reinforcing portion 320 may be formed as an integral structure with the nut 220 by an injection molding process. The connecting piece 300 is made of metal material, and the nut 200 is made of non-metal material.
The utility model discloses among the technical scheme electronic expansion valve, nut 200 is installed in disk seat 100, and connection piece 300 is installed in nut 200, and connection piece 300 includes connecting portion 310 and rib 320, and the one end of this connecting portion 310 is fixed in nut 200, the other end and disk seat 100 fixed connection to realize nut 200 and disk seat 100's fixed connection function. This rib 320 is connected with connecting portion 310 and is the contained angle to reach the effect of the intensity of reinforcing connection piece 300, simultaneously through being fixed in nut 200 with at least part of rib 320 in, increased the connection area that connection piece 300 and nut 200 are fixed, strengthened the joint strength of connection piece 300 and nut 200, and then reach the effect that improves the mounting structure stability of nut 200 and disk seat 100.
In order to further ensure the installation reliability of the nut 200 and the valve seat 100, referring to fig. 1 to 5, in an embodiment of the present invention, the connecting portion 310 extends along the radial direction of the nut 200, and the reinforcing portion 320 extends along the axial direction of the nut 200.
It is understood that the connecting portion 310 extends radially outward from the nut 200 and is fixedly connected to the valve seat 100 to achieve circumferential and axial spacing of the nut 200 and the valve seat 100. The reinforcing part 320 extends in the axial direction of the nut 200, and forms a right-angle structure with the connecting part 310, and the strength of the connecting piece 300 of the right-angle structure is greater than that of the existing sheet-shaped connecting piece 300, so that the mounting structure of the connecting piece 300 and the nut 200 is more stable.
In practical applications, the axial extension direction of the reinforcing portion 320 may be determined according to practical situations, such as extending axially upwards or extending axially downwards.
In an embodiment of the present invention, referring to fig. 1 to 5, the valve rod 410 is disposed in the nut 200, and the valve rod 410 is connected to the valve needle sleeve 421; the nut 200 includes a tube 210 and a mounting portion 220; the tube 210 is in threaded engagement with the valve stem 410; the mounting portion 220 is connected to the tube 210 and is located at one end of the tube 210 close to the needle sleeve 421; the connecting portion 310 is mounted to the mounting portion 220, and the reinforcing portion 320 extends in an axial direction of the mounting portion 220.
It is understood that the nut 200 includes a tube 210 and a mounting portion 220, and the inner wall of the tube 210 is provided with an internal thread to be threadedly engaged with the valve stem 410; the mounting portion 220 is connected to one side of the tube 210 close to the valve core seat 500, the valve needle sleeve 421 is disposed corresponding to the mounting portion 220, and the valve rod 410 drives the valve needle sleeve 421 to move close to or away from the valve core seat 500 along the axial direction of the mounting portion 220. The connecting piece 300 is mounted to the mounting portion 220, the connecting portion 310 extends radially outward from the mounting portion 220 to be fixed to the valve seat 100, one end of the reinforcing portion 320 connected to the connecting portion 310 is fixed in the mounting portion 220, and the other end of the reinforcing portion 320 extends in the axial direction of the mounting portion 220 to ensure the strength of the mounting portion 220.
In one embodiment, the mounting portion 220 includes a transition section 221 and a fixing portion 222; the transition section 221 is connected with the tube body 210, and the transition section 221 is of a circular conical structure; the fixing portion 222 is connected to a side of the transition section 221 away from the tube 210, and the connecting piece 300 is mounted on the fixing portion 222; the outer diameter of the fixing portion 222 is greater than the outer diameter of the tube 210, and the wall thickness of the fixing portion 222 is greater than the wall thickness of the transition section 221.
It can be understood that the outer diameter of the mounting portion 220 is larger than that of the tube body 210, the mounting portion 220 includes a transition portion 221 and a fixing portion 222, the transition portion 221 plays a role of connecting the tube body 210 and the fixing portion 222 in a transition manner, the tube body 210 is used for cooperating with the valve rod 410, the fixing portion 222 is used for cooperating with the valve needle portion 420, and the connecting piece 300 is mounted on the fixing portion 222, the fixing portion 222 needs to play a role of guiding and mounting at the same time, the outer diameter of the fixing portion 222 is larger than that of the tube body 210, so that the wall thickness of the fixing portion 222 can be set to be larger than that of the transition portion 221 to ensure that the fixing portion 222 has sufficient strength. In this embodiment, the transition section 221 is configured as a cone structure to save material while ensuring structural strength.
In an actual application process, the outer surface of the fixing portion 222 may be shaped according to an actual situation, for example, it may be a cylindrical surface, a conical surface, an arc surface, or a spherical surface.
In this embodiment, the connecting piece 300 is mounted on the fixing portion 222, and the reinforcing portion 320 may extend along the axial direction of the fixing portion 222 to reinforce the fixing portion 222 and the connecting piece 300. Optionally, the reinforcing portion 320 may extend from the connecting portion 310 to the transition section 221, or an end of the reinforcing portion 320 is spaced from the transition section 221, or the reinforcing portion 320 extends from the connecting portion 310 in a direction away from the transition section 221, and protrudes beyond the fixing portion 222 or does not protrude beyond the fixing portion 222.
In order to make the connection structure between the fixing portion 222 and the connecting piece 300 more reliable, in an embodiment of the present invention, the fixing portion 222 is provided with a thickened flange 223 at a position corresponding to the connecting portion 310. It can be understood that, thickening flange 223 is the annular structure that the surface of fixed part 222 was established to the evagination to the wall thickness of increase thickening flange 223 department makes connecting portion 310 stretch into the length of fixed part 222 longer, and then increases the area of being connected of fixed part 222 and connecting portion 310, improves connection structure stability.
In an embodiment of the present invention, referring to fig. 1 to 3, the reinforcing portion 320 extends from the connecting portion 310 toward the tube 210. It can be understood that, one end of the reinforcement portion 320 is connected to the connecting portion 310, and the other end extends toward the direction of the transition section 221, in order to ensure the structural integrity, the reinforcement portion 320 is wrapped by the fixing portion 222, in this embodiment, the reinforcement portion 320 plays a role of reinforcing the fixing, a guide sleeve 800 may be disposed between the valve core seat 500 and the fixing portion 222, the guide sleeve 800 is in guiding fit with the valve needle sleeve 421, and the valve core seat 500 and the fixing portion 222 are coaxial through the guide sleeve 800, so that the valve needle sleeve 421 drives the valve needle 422 to move axially along the inner wall of the guide sleeve 800 to achieve the function of blocking or opening the valve port 501. Of course, it is also possible that the valve core seat 500 is directly fixedly connected with the fixing portion 222, so that the valve needle sleeve 421 moves towards the valve core seat 500 through the guiding cooperation of the fixing portion 222.
In an actual application process, one end of the guide sleeve 800 is fixedly connected with the valve core seat 500, and the other end of the guide sleeve 800 is fixedly connected with the fixing portion 222, it can be understood that a connection manner between the guide sleeve 800 and the fixing portion 222 may be determined according to an actual situation, as shown in fig. 2, an end of the guide sleeve 800 is fixedly connected with an end of the fixing portion 222, at this time, the needle sleeve 421 may slide to an inner wall of the guide sleeve 800 along an inner wall of the fixing portion 222, and coaxiality between the needle sleeve 421 and the valve core seat 500 is realized through a guiding effect of the guide sleeve 800, so as to ensure stability of movement of the needle sleeve 421. Alternatively, as shown in fig. 3, the end of the guide sleeve 800 may extend into the fixing portion 222 to engage with the inner wall of the fixing portion 222, and the needle guard 421 directly engages with the inner wall of the guide sleeve 800 to perform axial movement.
In practical applications, the specific location of the connecting portion 310 may be determined according to practical situations, for example, the connecting portion may be disposed on a side of the fixing portion 222 close to the transition section 221, or in the middle of the fixing portion 222, or on a side of the fixing portion 222 far from the transition section 221. In this embodiment, in order to simplify the molding process and facilitate the installation of the nut 200, the outer surface of the connecting portion 310 away from the tube 210 is flush with the end surface of the installing portion 220 away from the tube 210. It can be understood that the whole structure of the nut 200 is located on the same side of the outer surface of the connecting portion 310 away from the tube 210, and the outer surface of the connecting portion 310 is flush with the outer end surface of the fixing portion 222, compared with the existing mode that the nut 200 is located on both sides of the connecting piece 300, the structure of the nut 200 is simplified, and the strength of the connecting portion 310 located at the end of the fixing portion 222 can be compensated by the reinforcement portion 320, so that the connecting strength of the whole connecting piece 300 and the nut 200 is ensured.
In an embodiment, the reinforcing portion 320 is provided with a first through hole 321 for guiding injection molding material to pass through, so that the reinforcing portion 320 and the nut 200 are integrally injection molded, and the reliability of the connection structure is ensured.
In an embodiment of the present invention, referring to fig. 4 and 5, the reinforcing portion 320 extends from the connecting portion 310 toward a direction away from the tube 210. It is understood that the reinforcement portion 320 extends toward the valve seat 500, and the reinforcement portion 320 may be disposed at a middle position in the thickness direction of the fixing portion 222, near an inner wall of the fixing portion 222, or near an outer wall of the fixing portion 222. The reinforcing portion 320 extends away from the tube 210, and may be completely covered by the fixing portion 222 or may extend from an end of the fixing portion 222.
Optionally, the reinforcing portion 320 has a guiding section 320A protruding from the mounting portion 220, and the guiding section 320A is in guiding engagement with the valve needle sleeve 421. It can be understood that, on the basis of the foregoing embodiment, the needle sleeve 421 is disposed corresponding to the mounting portion 220, the needle sleeve 421 can move toward or away from the valve core seat 500 along the axial direction of the mounting portion 220, and the guiding section 320A extends out of the mounting portion 220 and extends toward the valve core seat 500 to guide the needle sleeve 421, so that when the needle sleeve 421 moves toward the valve core seat 500, the needle sleeve can slide along the inner wall of the guiding section 320A.
In one embodiment, the inner diameter of the guide section 320A is less than or equal to the inner diameter of the mounting portion 220. It can be understood that the inner surface of the guiding section 320A is flush with the inner wall of the mounting portion 220, or the inner surface of the guiding section 320A protrudes from the inner wall of the mounting portion 220, so that the guiding section 320A can smoothly guide and cooperate with the valve needle sleeve 421. In this embodiment, the reinforcement portion 320 extends toward the valve core seat 500 and has a guiding section 320A protruding from the mounting portion 220, so as to play a role of guiding the valve needle portion 420 while playing a role of reinforcement.
In practical applications, in order to make the reinforcement portion 320 guide the needle guard 421 better, the axial length of the guide section 320A is greater than or equal to the axial length of the needle guard 421. The reinforcing portion 320 extends from the connecting portion 310 toward the valve plug seat 500 and extends out of the end of the fixing portion 222, so that the valve needle sleeve 421 is guided and matched with the inner wall of the reinforcing portion 320 when moving toward the valve plug seat 500, and the axial length of the reinforcing portion 320 is set to be greater than or equal to the axial length of the valve needle sleeve 421, so that the guide lengths of the reinforcing portion 320 and the valve needle sleeve 421 are ensured, and further, the movement of the valve needle sleeve 421 is more stable.
In one embodiment, an end of the reinforcement portion 320 facing away from the tube 210 extends to be fixed to the valve seat 500, and the valve needle sleeve 421 is guided to cooperate with the reinforcement portion 320 to move toward or away from the valve seat 500.
In this embodiment, the reinforcing portion 320 extends to be fixed with the valve core seat 500, positioning of the nut 200 and the valve core seat 500 is realized, coaxiality of the valve needle sleeve 421 and the valve core seat 500 is ensured, the valve needle sleeve 421 can axially move to the valve core seat 500 along the inner wall of the reinforcing portion 320, and the valve port 501 is blocked or opened.
In an embodiment, the connecting portion 310 is provided with a second through hole (not shown) for guiding injection molding material to pass through, so as to realize the integral injection molding function of the connecting portion 310 and the nut 200, and ensure the reliability of the connecting structure.
In an embodiment of the present invention, referring to fig. 1 to 5, the valve needle portion 420 includes a valve needle cover 421 and a valve needle 422; the valve needle sleeve 421 is connected with the valve rod 410, and the valve needle sleeve 421 is in guiding fit with the inner wall of the mounting part 220; the needle 422 is connected to a side of the needle sleeve 421 facing away from the valve stem 410; the valve stem 410 can drive the valve needle 422 to move closer to or away from the valve core seat 500 along the axial direction of the nut 200 to close or open the valve port 501. The rotor assembly 600 is disposed in the housing 700 and connected to the valve stem 410, and the rotor assembly 600 drives the valve stem 410 to rotate, so that the valve needle assembly moves axially in the nut 200.
It can be understood that one end of the valve stem 410 is fixedly connected to the rotor assembly 600, and the other end of the valve stem 410 is inserted into the valve needle sleeve 421 to be connected to the valve needle 422, and the rotation of the rotor assembly 600 drives the valve stem 410 to rotate, and the valve stem 410 is in threaded fit with the tube 210, so that when the nut 200 is fixedly connected to the valve seat 100, the valve stem 410 rotates and moves along the axial direction of the nut 200, and further drives the valve needle sleeve 421 to move along the inner wall of the fixing portion 222 axially, so that the valve needle 422 moves closer to or away from the valve core seat 500 along the axial direction of the nut 200, and the purpose of blocking or opening the valve port 501 is achieved.
In this embodiment, one end of the valve needle 422 is installed on the valve needle sleeve 421, and the other end is inserted into the valve port 501 of the valve core seat 500, and the valve needle sleeve 421 plays a role of guiding installation to be in guiding cooperation with the inner wall of the fixing portion 222, so that the axial movement of the valve needle 422 is more stable.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (18)
1. An electronic expansion valve, comprising:
a valve seat;
a nut mounted to the valve seat; and
the connecting piece is arranged on the nut; the connecting piece comprises a connecting portion and a reinforcing portion, one end of the connecting portion is fixed to the nut, the other end of the connecting portion is fixedly connected with the valve seat, at least part of the reinforcing portion is fixed to the nut, and the connecting portion is connected with the reinforcing portion in an included angle mode.
2. The electronic expansion valve according to claim 1, wherein the connecting portion extends in a radial direction of the nut, and the reinforcing portion extends in an axial direction of the nut.
3. The electronic expansion valve of claim 2, further comprising a valve stem and a valve needle sleeve disposed within the nut, the valve stem being connected to the valve needle sleeve; the nut includes:
a tube body in threaded engagement with the valve stem; and
the mounting part is connected with the tube body and is positioned at one end, close to the valve needle sleeve, of the tube body; the connecting portion is mounted on the mounting portion, and the reinforcing portion extends in the axial direction of the mounting portion.
4. The electronic expansion valve according to claim 3, wherein the reinforcement portion extends from the connection portion in a direction toward the pipe body.
5. The electronic expansion valve according to claim 4, wherein the reinforcing portion is embedded in the mounting portion.
6. The electronic expansion valve of claim 5, wherein the outer surface of the connecting portion remote from the tube body is flush with the end surface of the mounting portion remote from the tube body.
7. An electronic expansion valve according to claim 5, wherein the reinforcement part is provided with a first through-hole for guiding injection-molded material therethrough.
8. The electronic expansion valve according to claim 4, further comprising a guide sleeve and a valve core seat disposed on the valve seat, wherein one end of the guide sleeve is fixedly connected to the valve core seat, and the other end is fixedly connected to the mounting portion; the valve needle sleeve is matched with the guide sleeve in a guiding mode.
9. The electronic expansion valve of claim 3, wherein the reinforcement portion extends from the connection portion in a direction away from the tube body.
10. The electronic expansion valve of claim 9, wherein the reinforcement portion has a guide section protruding from the mounting portion, and the valve needle sheath is in guiding engagement with an inner wall of the guide section.
11. The electronic expansion valve of claim 10, wherein an inner diameter of the guide section is less than or equal to an inner diameter of the mounting portion.
12. The electronic expansion valve of claim 10, wherein the axial length of the guide section is greater than or equal to the axial length of the valve needle sleeve.
13. The electronic expansion valve according to claim 9, wherein the valve seat is provided with a valve core seat, one end of the reinforcement portion, which is away from the tube body, extends to be fixed with the valve core seat, and the valve needle sleeve is in guiding fit with the reinforcement portion to move closer to or away from the valve core seat.
14. The electronic expansion valve according to any of claims 1 to 13, wherein the connecting portion and the reinforcing portion are of a unitary structure.
15. The electronic expansion valve according to claim 14, wherein the connecting portion has a circular ring structure, and the reinforcing portion is formed by bending an inner end of the connecting portion.
16. An electronic expansion valve according to any of claims 1 to 13, wherein the connecting piece is injection moulded integrally with the nut.
17. The electronic expansion valve according to any one of claims 3 to 13, wherein the mounting portion comprises:
the transition section is connected with the pipe body and is of a conical structure; and
the fixing part is connected with one side of the transition section, which deviates from the pipe body, and the connecting piece is arranged on the fixing part; the outer diameter of the fixing part is larger than that of the pipe body, and the wall thickness of the fixing part is larger than that of the transition section; the position of the fixed part corresponding to the connecting part is provided with a thickening flange.
18. A refrigeration device comprising an electronic expansion valve as claimed in any one of claims 1 to 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023026608.1U CN213954363U (en) | 2020-12-14 | 2020-12-14 | Electronic expansion valve and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023026608.1U CN213954363U (en) | 2020-12-14 | 2020-12-14 | Electronic expansion valve and refrigeration equipment |
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| CN213954363U true CN213954363U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023026608.1U Active CN213954363U (en) | 2020-12-14 | 2020-12-14 | Electronic expansion valve and refrigeration equipment |
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| CN (1) | CN213954363U (en) |
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