CN217929302U

CN217929302U - Nut component of electronic expansion valve

Info

Publication number: CN217929302U
Application number: CN202221409606.7U
Authority: CN
Inventors: 胡超; 黄全丰; 姜玉聪; 张盛达; 俞元吉; 程斌
Original assignee: Ningbo Tuopu Group Co Ltd
Current assignee: Ningbo Tuopu Group Co Ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-11-29
Anticipated expiration: 2032-06-08

Abstract

The utility model discloses a nut component of an electronic expansion valve, which comprises a nut, wherein the nut comprises a base part and a cylinder arranged on one side of the base part; the spring guide rail is sleeved on the outer side of the column body; the sliding ring is sleeved on the outer side of the cylinder and rotates around the spring guide rail and meanwhile ascends and descends along the cylinder, a stopping part is vertically arranged at the lower end of the spring guide rail, a limiting groove is vertically arranged on the side wall of the base part, the stopping part is embedded into the limiting groove, protruding parts are arranged on two sides of the limiting groove, and the protruding parts can deform under external force to cover the limiting groove to limit the stopping part in the limiting groove. The utility model discloses can avoid the influence to nut component and valve performance at assembly and function process to the effectual quality that improves the product solves various problems among the prior art.

Description

Nut component of electronic expansion valve

Technical Field

The utility model relates to an electronic expansion valve field specifically is an electronic expansion valve's nut assembly.

Background

Energy conservation and emission reduction are problems to be solved urgently by people nowadays. The throttling device plays a key role in the refrigeration system, and the energy consumption of the whole refrigeration system can be reduced by selecting a proper throttling mechanism to be matched with the refrigeration system. The working principle of throttling is that when the refrigerant flows through the valve, the flow section is suddenly contracted, the flow speed of the fluid is accelerated, and the pressure is reduced, so that the functions of regulating the flow, controlling the degree of superheat and evaporating the liquid level are achieved. Therefore, the flow regulation of the throttling mechanism plays an important role in saving energy and reducing consumption of the refrigerating device. On some occasions with severe load change or wide operation condition range, the traditional throttling elements (such as capillary tubes, thermal expansion valves and the like) cannot meet the requirements on comfort and energy conservation. The temperature sensing package of the thermostatic expansion valve has obvious delay characteristic, and is difficult to cooperate with the displacement of the compressor to make quick and effective reaction to the flow change, finally resulting in the oscillation of system regulation, causing the unstable operation of the machine, even damaging the compressor network, so the electronic expansion valve is gradually replacing the traditional throttling element. The electronic expansion valve is superior to the traditional throttling mechanism in superheat degree control (liquid level control) and flow regulation, and has the advantages of higher reaction speed, wider regulation range, more obvious energy-saving effect and wide application prospect.

The nut component structure in the existing electronic expansion valve comprises a spring guide rail, a sliding ring, an insert and a nut. Spring rail and sliding ring cooperation are in the same place, and the inserts is moulded plastics on the nut, and the breach on the nut is gone into to spring rail's tail end card again, and this kind of assembly form may have spring rail and nut to be connected insecurely, has the risk that drops, if drop after the assembly finished product, will influence the valve body function greatly, seriously influences the ooff valve action, promotes the defective rate, even after the product loading, causes the risk of recalling. In addition, after the existing insert and nut are molded, only two exhaust holes are formed, and if the existing insert and nut are in a high-pressure working environment, the valve body can not exhaust smoothly, the efficiency of the switch valve is influenced, and even the switch valve action can not be completed normally.

Therefore, in view of the above technical problems, a new nut assembly is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electronic expansion valve's nut assembly can avoid at assembly and the influence of function process to nut assembly and valve performance to the effectual quality that improves the product solves various problems among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a nut component of an electronic expansion valve comprises a nut, wherein the nut comprises a base part and a column body arranged on one side of the base part; the spring guide rail is sleeved on the outer side of the column body; the sliding ring is sleeved on the outer side of the cylinder and rotates around the spring guide rail and simultaneously ascends and descends along the cylinder, a stop part is vertically arranged at the lower end of the spring guide rail, a limit groove is vertically arranged on the side wall of the base part, the stop part is embedded into the limit groove, protruding parts are arranged on two sides of the limit groove, the protruding parts can deform under external force to cover the limit groove to limit the stop part in the limit groove, when the magnetic rotor assembly outside the nut assembly rotates, a stop rod on the magnetic rotor assembly can shift the sliding ring to rotate around the spring guide rail and ascend and descend simultaneously, when the sliding ring moves to the position of the stop part, the limiting is achieved, the magnetic rotor assembly cannot rotate, the stop part is embedded into the limit groove and is riveted through the protruding parts, the firm installation of the spring guide rail can be guaranteed, the stop part is prevented from being separated from the limit groove, and the normal operation of the expansion valve is guaranteed.

Preferably, the side wall of the base portion is vertically provided with a plane surface, the limiting groove is formed in the plane surface, the protruding portion and the limiting groove are formed in the plane surface, the protruding portion is conveniently riveted, and the locking portion is conveniently embedded into the limiting groove.

Preferably, an insert is arranged on the outer side of the base part of the nut and used for being in press fit connection with the valve seat.

Preferably, the insert and the nut are integrally formed by injection molding, so that the combination firmness between the insert and the nut can be ensured.

Preferably, the edge of inserts be provided with the first air channel of a plurality of, the lateral wall of base portion on be provided with the second air channel that corresponds with first air channel, first air channel and second air channel form balanced air flue, more convenient processing when guaranteeing self intensity, reduce process time and cost, reduce the consumptive material, and strengthened the exhaust performance of whole valve, nut component mould plastics the portion and the first air channel distance more than or equal to 0.3mm on the inserts to guarantee the portion of moulding plastics and seal glue and intensity, ensure the logical in the same direction as of air channel.

Preferably, a circle of limiting steps are arranged on the outer side of the base portion, the insert is located on one side of the limiting steps, the second vent groove is formed in the limiting steps, and the limiting steps can axially limit the insert.

Preferably, the inner hole of the insert is provided with a plurality of grooves, so that the bonding strength between the insert and the nut can be improved.

Compared with the prior art, the beneficial effects of the utility model are that:

adopt new connected mode between nut and the spring guide, can firmly spacing the locking part of spring guide through spacing groove and bellying, prevent that nut and spring guide from breaking away from, improved the holistic intensity of subassembly greatly, improved the qualification rate of subassembly, reduced the defective rate of subassembly, firm in connection between inserts and the nut to be provided with a plurality of balanced air flues, guarantee that the exhaust of valve body is smooth and easy.

Drawings

Fig. 1 is a first perspective structure view of the present invention;

fig. 2 is a second perspective three-dimensional structure diagram of the present invention;

FIG. 3 is a top cross-sectional view of the present invention;

fig. 4 is a structural view of the insert of the present invention.

Reference numerals:

1. spring rail, 11, stop part, 2, sliding ring, 3, inserts, 31, first air channel, 32, recess, 4, nut, 41, base portion, 42, cylinder, 43, second air channel, 44, spacing step, 45, spacing groove, 46, bellying, 47, tangent plane.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the utility model provides a following technical solution for solving the problems of easy separation and unsmooth exhaust of valve body between the spring guide rail and the nut 4 in the existing expansion valve: a nut component of an electronic expansion valve comprises a nut 4, wherein the nut 4 comprises a base part 41 and a column 42 arranged at one side of the base part 41; the spring guide rail 1 is sleeved on the outer side of the cylinder 42; the sliding ring 2 is sleeved on the outer side of the cylinder 42 and rotates around the spring guide rail 1 and simultaneously ascends and descends along the cylinder 42, the stopping portion 11 is vertically arranged at the lower end of the spring guide rail 1, the limiting groove 45 is vertically arranged on the side wall of the base portion 41, the stopping portion 11 is embedded into the limiting groove 45, the protruding portions 46 are arranged on two sides of the limiting groove 45, the protruding portions 46 can deform under external force to cover the limiting groove 45 to limit the stopping portion 11 in the limiting groove 45, when the magnetic rotor assembly outside the nut assembly rotates, a stopping rod on the magnetic rotor assembly can stir the sliding ring 2 to rotate around the spring guide rail 1 and ascend and descend simultaneously, when the sliding ring 2 moves to the position of the stopping portion 11, the limiting is achieved, the magnetic rotor assembly cannot rotate, the stopping portion 11 is embedded into the limiting groove 45 and is riveted through the protruding portions 46, firm installation of the spring guide rail 1 can be guaranteed, the stopping portion 11 is prevented from being separated from the limiting groove 45, and normal operation of the expansion valve is guaranteed.

Specifically, the protruding portion 46 can be deformed by a hot riveting process, and meanwhile, a plane 47 is vertically arranged on the side wall of the base portion 41, the limiting groove 45 is formed in the plane 47, the protruding portion 46 and the limiting groove 45 are arranged on the plane 47, riveting is conveniently performed on the protruding portion 46, and the stop portion 11 is conveniently embedded into the limiting groove 45.

In order to make nut 4 and valve seat between be connected more firmly, the outside of base portion 41 of nut 4 be provided with inserts 3, inserts 3 be the annular, inserts 3 are used for being connected with the valve seat pressure equipment, simultaneously, inserts 3 and nut 1 injection moulding as an organic whole, can guarantee the bonding firmness between inserts 3 and the nut 1, in addition, inserts 3's hole on be provided with a plurality of recess 32, can improve the bonding strength between inserts 3 and the nut 4.

In order to make the exhaust of disk seat smooth and easy, the edge of inserts 3 be provided with the first air channel 31 of a plurality of, the lateral wall of base portion 41 on be provided with the second air channel 43 that corresponds with first air channel 31, first air channel 31 and second air channel 43 form balanced air flue, more convenient processing when guaranteeing self intensity, reduce process time and cost, reduce the consumptive material, and strengthened the exhaust performance of whole valve, the portion of moulding plastics of nut component and the first air channel distance more than or equal to 0.3mm on inserts 3 to guarantee the portion of moulding plastics and seal glue and intensity, guarantee the logical in order of air channel.

The outer side of the base part 41 is provided with a circle of limiting steps 44, the insert 3 is positioned on one side of the limiting steps 44, the second vent groove 43 is arranged on the limiting steps 44, and the limiting steps 44 can axially limit the insert 3.

It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Claims

1. A nut assembly for an electronic expansion valve, comprising:

the nut (4), the said nut (4) includes the base (41) and sets up the cylinder (42) on one side of the base (41);

the spring guide rail (1) is sleeved on the outer side of the cylinder (42);

sliding ring (2), cup joint in cylinder (42) outside and go up and down along cylinder (42) when rotating round spring guide (1), its characterized in that:

the lower extreme of spring rail (1) vertically be provided with detent (11), the lateral wall of base portion (41) on vertically be provided with spacing groove (45), embedding of detent (11) in spacing groove (45), the both sides of spacing groove (45) be provided with bellying (46), bellying (46) can take place to deform under the external force and cover spacing groove (45) and restrict detent (11) in spacing groove (45).

2. The nut assembly of an electronic expansion valve according to claim 1, wherein: the side wall of the base part (41) is vertically provided with a flat section (47), and the limiting groove (45) is arranged on the flat section (47).

3. The nut assembly of an electronic expansion valve according to claim 1, wherein: the outer side of the base part (41) of the nut (4) is provided with an insert (3).

4. The nut assembly of an electronic expansion valve according to claim 3, wherein: the insert (3) and the nut (4) are integrally formed by injection molding.

5. The nut assembly of an electronic expansion valve according to claim 3, wherein: the edge of the insert (3) is provided with a plurality of first vent grooves (31), and the side wall of the base part (41) is provided with second vent grooves (43) corresponding to the first vent grooves (31).

6. The nut assembly of an electronic expansion valve according to claim 5, wherein: the base portion (41) outside be provided with round spacing step (44), inserts (3) be located one side of spacing step (44), just second air channel (43) set up on spacing step (44).

7. The nut assembly of an electronic expansion valve according to claim 3, wherein: the inner hole of the insert (3) is provided with a plurality of grooves (32).