CN214197477U

CN214197477U - Electronic expansion valve and refrigeration equipment

Info

Publication number: CN214197477U
Application number: CN202023026393.3U
Authority: CN
Inventors: 杨茂; 陈超; 黄龙华; 江波
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-09-14
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses an electronic expansion valve and refrigeration plant, electronic expansion valve includes: a valve housing; the rotor assembly is rotatably arranged in the valve shell and comprises a magnetic ring, a fixed plate, a lead screw and a stop rod, the fixed plate is connected with the magnetic ring, the lead screw is positioned at the axis of the magnetic ring and fixed on the fixed plate, the stop rod is arranged in an L shape and is provided with a fixed end and a stop end which are oppositely arranged, the fixed end is fixed on the fixed plate, and the stop end extends into the magnetic ring. The utility model discloses electronic expansion valve is "l" shape setting through making the locking rod to make stiff end snap-on in the fixed plate, both simplified the structure of locking rod self, simplified the connected mode of locking rod and fixed plate again, thereby make electronic expansion valve's inner structure simpler, manufacturing cost is lower.

Description

Electronic expansion valve and refrigeration equipment

Technical Field

The utility model relates to a throttle technical field, in particular to electronic expansion valve and refrigeration plant.

Background

In the related art, the rotor assembly of the electronic expansion valve comprises a fixing plate and a stop rod connected to the fixing plate, wherein the stop rod is bent to form a protrusion which needs to be fixed on the fixing plate, so that the electronic expansion valve is complex in internal structure and high in production cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electronic expansion valve aims at solving the technical problem who how to simplify electronic expansion valve inner structure.

In order to achieve the above object, the present invention provides an electronic expansion valve comprising:

a valve housing;

the rotor assembly is rotatably arranged in the valve shell and comprises a magnetic ring, a fixed plate, a lead screw and a stop rod, the fixed plate is connected with the magnetic ring, the lead screw is positioned at the axis of the magnetic ring and fixed on the fixed plate, the stop rod is arranged in an L shape and is provided with a fixed end and a stop end which are oppositely arranged, the fixed end is fixed on the fixed plate, and the stop end extends into the magnetic ring.

In one embodiment, the stop rod is welded to the fixing plate.

In one embodiment, the fixing plate is provided with a fixing hole, and the stop rod is arranged in the fixing hole in a penetrating manner.

In one embodiment, the circumferential wall of the stop rod is provided with a positioning portion protruding out of the circumference of the fixing hole to abut against the plate surface of the fixing plate.

In one embodiment, the positioning portion extends in a circumferential direction of the stopper rod.

In one embodiment, the stop rod is spaced from an inner circumferential wall of the magnetic ring.

In an embodiment, the electronic expansion valve further includes a fixing nut, a spring guide rail and a sliding ring, the fixing nut, the spring guide rail and the sliding ring are disposed in the valve housing, the lead screw is movably matched with the fixing nut, the spring guide rail is sleeved on the fixing nut, the sliding ring is movably screwed with the fixing nut, and the sliding ring is provided with a protruding portion for abutting against the stop rod.

In one embodiment, the spring guide rail has a guide portion and a first stop portion and a second stop portion disposed at two ends of the guide portion, the guide portion is movably engaged with the slide ring, and the first stop portion and the second stop portion are used for limiting the slide ring.

In one embodiment, an insertion groove is formed in the inner circumferential wall of the magnetic ring, and the edge of the fixing plate is inserted into the insertion groove.

The utility model also provides a refrigeration plant, including electronic expansion valve, this electronic expansion valve includes: a valve housing; the rotor assembly is rotatably arranged in the valve casing and comprises a magnetic ring, a fixed plate, a lead screw and a stop rod, the fixed plate is connected with the magnetic ring, the lead screw is located at the axis of the magnetic ring and fixed on the fixed plate, the stop rod is provided with a fixed end and a stop end which are arranged oppositely, the fixed end is fixed on the fixed plate, and the stop end extends into the magnetic ring.

The utility model discloses electronic expansion valve is "l" shape setting through making the locking rod to make stiff end snap-on in the fixed plate, both simplified the structure of locking rod self, simplified the connected mode of locking rod and fixed plate again, thereby make electronic expansion valve's inner structure simpler, manufacturing cost is lower.

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 cross-sectional view of an embodiment of an electronic expansion valve according to the present invention;

fig. 2 is a schematic cross-sectional view of an embodiment of a rotor assembly according to the present invention.

The reference numbers illustrate:

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 meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. 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 an embodiment of the present invention, as shown in fig. 1 to 2, the electronic expansion valve includes: a valve housing 10; the rotor assembly is rotatably arranged in the valve housing 10 and comprises a magnetic ring 20, a fixing plate 30, a screw rod 40 and a stop rod 50, wherein the fixing plate 30 is connected to the magnetic ring 20, the screw rod 40 is located at the axis of the magnetic ring 20 and fixed on the fixing plate 30, the stop rod 50 is provided with a fixing end 51 and a stop end 52 which are oppositely arranged, the fixing end 51 is fixed on the fixing plate 30, and the stop end 52 extends into the magnetic ring 20.

In the present embodiment, the magnet ring 20 is entirely disposed in a cylindrical shape, and the fixing plate 30 covers one end of the magnet ring 20. The electronic expansion valve further comprises a fixing nut 60 arranged in the valve casing 10 and a stator assembly corresponding to the rotor assembly arranged outside the valve casing 10, the stator assembly is electrified to generate a magnetic field, and the magnetic field drives the rotor assembly to rotate. Wherein the screw rod 40 is in threaded engagement with the fixing nut 60 to convert the rotational movement into an axial movement, it can be understood that the axial movement of the screw rod 40 will also drive the magnetic ring 20, the fixing plate 30 and the stop rod 50 to move axially together. The stop rod 50 is used for abutting against the limiting structure when the rotor assembly moves to the limit position, so that the whole rotor assembly stops rotating, and therefore the axial movement is stopped; the limiting structure can be disposed on the fixing nut 60, or can be disposed on other structures, which is not limited herein. The stopping rod 50 is specifically arranged in an l shape, the fixed end 51 and the stopping end 52 are respectively arranged at two ends of the stopping rod 50 in the length direction, and the fixed end 51 is fixed between the screw rod 40 and the inner cavity wall of the magnetic ring 20.

The stopping rod 50 and the fixing plate 30 may be fixed by a welding process to simplify the fixing process and improve the coupling strength. The fixing end 51 may be directly welded to the plate surface of the fixing plate 30, or may be embedded in the fixing plate 30 and then welded and fixed, which is not limited herein. As shown in fig. 1 and 2, the fixing plate 30 is provided with a fixing hole, and the stop rod 50 is inserted into the fixing hole; in combination with the above-mentioned embodiment of welding, the wall of the fixing hole is welded to the circumferential wall of the stop rod 50, so that the connection area between the fixing plate 30 and the stop rod 50 can be increased, and the connection strength can be improved. In practical applications, the circumferential wall of the stop rod 50 is protruded with a positioning portion, and the positioning portion is protruded from the periphery of the fixing hole to abut against the plate surface of the fixing plate 30. It is required to position the stopping rod 50 on the fixing plate 30 during the welding process to make the welding process easier and more convenient. The specific shape of the positioning part is not limited, and the positioning part only needs to be capable of positioning and abutting against the plate surface of the fixing plate 30; so that the stopping rod 50 can be pre-fixed with the fixing plate 30 to facilitate welding. Specifically, the positioning portion extends along the circumferential direction of the stopper rod 50 to increase an abutting area with the fixing plate 30, thereby improving positioning stability.

The utility model discloses electronic expansion valve is through making stiff end 51 and the locking end 52 that stop rod 50 has relative setting to make stiff end 51 lug fixation in fixed plate 30, both simplified the structure of stop rod 50 self, simplified the connected mode of stop rod 50 with fixed plate 30 again, thereby make electronic expansion valve's inner structure simpler, manufacturing cost is lower.

As shown in fig. 1 and 2, the stopping rod 50 is spaced apart from the inner circumferential wall of the magnetic ring 20. In this embodiment, the stopping rod 50 has a certain distance from the inner peripheral wall of the magnetic ring 20, that is, the stopping rod 50 does not contact the magnetic ring 20, so that when the stopping rod 50 stops moving under the action of the limited structure, the stopping rod 50 does not rub against the magnetic ring 20 to cause the magnetic powder on the magnetic ring 20 to fall off, thereby preventing the magnetic powder from affecting the operation of the electronic expansion valve, and improving the operation stability of the electronic expansion valve.

The electronic expansion valve further comprises a fixing nut 60, a spring guide rail 70 and a sliding ring 80 which are arranged in the valve casing 10, the screw rod 40 is movably matched with the fixing nut 60, the spring guide rail 70 is sleeved on the fixing nut 60, the sliding ring 80 is movably screwed with the fixing nut 60, and the sliding ring 80 is provided with a protruding part used for being abutted to the stop rod 50.

In this embodiment, the lead screw 40 is in threaded engagement with a nut, the spring rail 70 is fixedly sleeved on the nut, and the slide ring 80 is movable along the spring rail 70. The protrusion is located on the moving track of the stopping end 52 of the stopping rod 50, and when the rotor assembly rotates, the stopping end 52 of the stopping rod 50 will rotate to abut against the protrusion, so as to push the slip ring 80 to rotate together; the slip ring 80 rotates along the spring rails 70 to convert the rotational motion into axial motion, that is, both the slip ring 80 and the rotor assembly will move axially. After the sliding ring 80 moves to the end of the spring guide rail 70, the sliding ring 80 is limited in the axial direction or the circumferential direction, so that the sliding ring 80 cannot move continuously, and at this time, the stopping rod 50 cannot push the sliding ring 80 continuously, so that the stopping rod 50 also stops rotating, the rotor assembly stops integrally, and the stopping effect is realized. The limit of the stopping rod 50 is achieved by the cooperation of the slip ring 80 and the spring guide 70, so that the stopping process of the rotor assembly can be more stable, and the impact of stopping on the whole rotor assembly can be reduced.

Specifically, the spring guide 70 has a guiding portion and a first stopping portion and a second stopping portion disposed at two ends of the guiding portion, the guiding portion is movably matched with the sliding ring 80, and the first stopping portion and the second stopping portion are used for limiting the sliding ring 80. In this embodiment, after the rotor assembly is stopped by the sliding ring 80 in the limit position, the rotor assembly can be returned to the initial position by rotating in the reverse direction, and the stopping rod 50 can also push the sliding ring 80 to move in the reverse direction when rotating in the reverse direction, so that the sliding ring 80 can also be pushed to the initial position. The first stopper and the second stopper correspond to an initial position and a limit position of the slide ring 80, respectively, and the first stopper and the second stopper may limit the slide ring 80 in a circumferential direction or limit the slide ring 80 in an axial direction, which is not limited herein. The slide ring 80 will abut against the first stop in the initial position and the second stop in the extreme position to achieve an effective stop. The first stop part and the second stop part are formed on the spring guide rail 70, and the spring guide rail 70 can be fully utilized to reduce the processing difficulty of the stop parts; in addition, the spring rail 70 itself has elasticity, so that the impact of the slip ring 80 on the stopper is buffered by the spring rail 70 to reduce the reaction force to the slip ring 80, thereby reducing the impact to the rotor assembly.

As shown in fig. 1 and 2, the fixing plate 30 may be provided with an assembly hole, and the lead screw 40 may be fixedly engaged with the assembly hole, or may be welded and fixed to a hole wall of the assembly hole, so as to improve the connection strength between the lead screw 40 and the assembly hole. The periphery of the assembly hole can extend along the axial direction to form a fixing ring so as to increase the matching area with the screw rod 40 and improve the connection strength. The inner peripheral wall of the magnetic ring 20 may be provided with an embedding groove extending along the circumferential direction, and the periphery of the fixing plate 30 is embedded in the embedding groove to improve the matching strength of the fixing plate 30 and the magnetic ring 20.

The utility model discloses still provide a refrigeration plant, this refrigeration plant includes electronic expansion valve, and this electronic expansion valve's concrete structure refers to above-mentioned embodiment, because this refrigeration plant has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary detail here.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electronic expansion valve, comprising:

a valve housing;

2. The electronic expansion valve of claim 1, wherein the stop rod is welded to the fixed plate.

3. The electronic expansion valve according to claim 2, wherein the fixing plate has a fixing hole, and the stopper rod is inserted into the fixing hole.

4. The electronic expansion valve according to claim 3, wherein a positioning portion is protruded from a peripheral wall of the stopper rod, and the positioning portion is protruded from a periphery of the fixing hole to abut against a plate surface of the fixing plate.

5. The electronic expansion valve according to claim 4, wherein the positioning portion extends in a circumferential direction of the stopper rod.

6. An electronic expansion valve according to any of claims 1 to 5, wherein said stop rod is spaced from an inner circumferential wall of said magnetic ring.

7. The electronic expansion valve of claim 6, further comprising a retaining nut, a spring guide, and a sliding ring disposed in the valve housing, wherein the lead screw is movably engaged with the retaining nut, the spring guide is sleeved on the retaining nut, the sliding ring is movably engaged with the retaining nut, and the sliding ring has a protrusion for abutting against the stopper rod.

8. The electronic expansion valve of claim 7, wherein the spring guide has a guiding portion and a first stopping portion and a second stopping portion disposed at two ends of the guiding portion, the guiding portion is movably engaged with the sliding ring, and the first stopping portion and the second stopping portion are used for limiting the sliding ring.

9. The electronic expansion valve according to any of claims 1 to 5, wherein an insertion groove is formed on an inner circumferential wall of the magnetic ring, and an edge of the fixing plate is inserted into the insertion groove.

10. Refrigeration appliance, comprising an electronic expansion valve according to any of claims 1 to 9.