CN203604661U

CN203604661U - Electronic expansion valve

Info

Publication number: CN203604661U
Application number: CN201320620641.8U
Authority: CN
Inventors: 吴俊云
Original assignee: SUZHOU YOULENG ELECTROMECHANICAL TECHNOLOGY Co Ltd
Current assignee: SUZHOU YOULENG ELECTROMECHANICAL TECHNOLOGY Co Ltd
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2014-05-21
Anticipated expiration: 2023-09-30

Abstract

The utility model discloses an electronic expansion valve. The electronic expansion valve comprises a magnetic rotor assembly (2), a stop rod (3), a check ring (4), a check ring guide rail (5) and a valve needle assembly (8). The check ring (4) and the check ring guide rail (5) are arranged on a valve rod of the valve needle assembly (8) in a sleeved mode, the check ring guide rail (5) hooks a magnetic rotor connecting piece (17), the check ring guide rail (5) which is fixed to the magnetic rotor connecting piece (17) and arranged on the outer side of the valve rod (13) in a sleeved mode is arranged in an inner cavity of the magnetic rotor assembly (2), one end of the check ring guide rail (5) is of a hook structure formed by being bent circuitously, a channel can be formed in the end face of the magnetic rotor connecting piece (17), the stop rod (3) is fixed together with a wire sleeve (9) and a wire sleeve pressing plate (6), a plurality of through holes are formed in the wall of the wire sleeve (9), and a step is arranged on the upper portion of a valve seat (10) so as to enable the wire sleeve (9) to be located conveniently. The electronic expansion valve can obviously reduce the probability that the stop parts are damaged and is simple to install, the structure reliability and the work stability of the valve can be improved, and the probability that the electronic expansion valve is stuck is lowered.

Description

A kind of electric expansion valve

Technical field

The utility model relates to fluid control component technical field, particularly a kind of electric expansion valve.

Background technique

At refrigeration technology field, electric expansion valve is the cold medium flux controlling component of chiller plant, and its working procedure is generally: drive magnet rotor to drive valve needle movements to regulate the aperture of valve port by stepper motor, thereby regulate the flow of refrigerant.

Therefore how improving the reliability of electronic expansion valve structure and the reliability of work, is the problem that those skilled in the art need solution badly.

Summary of the invention

The technical problems to be solved in the utility model is for providing a kind of electric expansion valve, the structural design of this electric expansion valve can significantly reduce the probability that its stop component is damaged on the one hand, thereby improve its reliability of structure, can improve on the other hand the reliability and stability of its work.

For solving the problems of the technologies described above, the utility model provides a kind of electric expansion valve, comprise valve bonnet, valve body, magnetic rotor component, needle assembly, stop ring, stop ring guide rail, stop rod, silk braid, silk braid pressing plate, valve seat, delivery line, ingress pipe, described needle assembly comprises valve rod, screw mandrel, needle spring, needle, and described valve rod and screw mandrel are affixed integral, described needle spring is placed in described screw mandrel inner chamber, individual step is arranged at the top of described needle, and be positioned at screw mandrel inner chamber, the thin part of its end is inserted in needle spring, described magnetic rotor component comprises magnet steel and described magnet rotor link, and described magnetic rotor component is provided with inner chamber, in described inner chamber, be provided with the valve rod fixing with described magnet rotor link, described inner chamber is also provided with the stop ring guide rail of fixing and be enclosed within described valve rod outside with described magnet rotor link, stop ring is enclosed within on described stop ring guide rail, and can and do relative motion with it along stop ring guide rail, described stop ring guide rail one end is the roundabout structure that curves buckle, the top of described magnetic rotor component is fixed with magnet rotor link, and described valve rod is affixed integral by described magnet rotor link central through bore and described magnet rotor, the outer wall of described magnet rotor link is provided with two grooves, and described stop ring guide rail is connected with described magnet rotor link by these two grooves, on the end face of described magnet rotor link, can have through hole, described stop rod and silk braid and silk braid pressing plate are fixed together, and described silk braid wall has multiple perforation, and individual step is arranged at described valve seat top, so that silk braid location.

Alternatively, described silk braid wall has 1-8 perforation and the equivalent diameter in hole can be not identical.

Alternatively, but described silk braid metal processing piece.

Alternatively, but described silk braid improved plastics structural shape, together with described stop rod and described silk braid pressing plate can be injection-moulded in silk braid.

Alternatively, on described magnet rotor link annular end face, can be provided with through hole, and described through hole is evenly distributed on the annular end face of described magnet rotor link, the quantity of described through hole is 1-16.

Alternatively, on described magnet rotor link annular end face, can be provided with through hole, the quantity of described through hole is 1-16.

Alternatively, on described magnet rotor link annular end face, can only have central through bore, and described magnet rotor link annular end face can shear one or more snippets cambered surface, thereby form upper lower through-hole.

Alternatively, in described needle assembly, valve rod can be integrative-structure with screw mandrel, and needle can pass an interference cover, and needle top can be pressed into screw mandrel inner chamber together with described interference cover, described interference cover and screw mandrel inner chamber interference fit, and described needle can move around.

Alternatively, in described needle assembly, valve rod can be integrative-structure with screw mandrel, and needle can pass a needle cover plate, and needle cover plate is affixed by welding or riveted means and screw mandrel, and needle top is at screw mandrel inner chamber and insert in needle spring.

Preferably, on described magnet rotor link annular end face, can only have central through bore, and described magnet rotor link annular end face can be sheared the through hole forming after one section of covering of the fan.

Preferably, described silk braid wall has 4 manholes, and closely two apertures at middle part are internal and external pressure balance hole, and two macropores of bottom are the passage that fluid enters valve seat.

The electric expansion valve that the utility model provides can significantly reduce the probability that its stop component is damaged, and installs simply, can improve the stability of its reliability of structure and work, and has reduced electric expansion valve stuck possibility occurs.

Accompanying drawing explanation

Fig. 1 is that the one of the utility model electric expansion valve is implemented structural representation;

Fig. 2 is the structural representation of the needle assembly of electric expansion valve in Fig. 1;

Fig. 3 is the structural representation of the magnetic rotor component of electric expansion valve in Fig. 1;

Fig. 4 is the structural representation of magnet rotor link in Fig. 3;

Fig. 5 is the plan view of magnet rotor link in Fig. 3;

Fig. 6 is a kind of structural representation of electric expansion valve screw mandrel in Fig. 1;

Fig. 7 is a kind of sectional view of electric expansion valve silk braid in Fig. 1;

Fig. 8 is the schematic diagram of electric expansion valve silk braid pressing plate in Fig. 1;

Fig. 9 is the structural representation of electric expansion valve stop ring guide rail in Fig. 1;

Figure 10 is the structural representation of electric expansion valve stop ring in Fig. 1;

In Fig. 1-10:

1 valve bonnet; 2 magnetic rotor components; 3 stop rods; 4 stop rings; 5 stop ring guide rails; 6 silk braid pressing plates; 7 valve bodies; 8 needle assemblies; 9 silk braids; 10 valve seats; 11 delivery lines; 12 ingress pipes; 13 valve rods; 14 needle springs; 15 screw mandrels; 16 needles; 17 ceramic tile sub-connecting members; 18 magnet steel.

Embodiment

In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As shown in Figure 1, electric expansion valve comprises valve bonnet (1), magnetic rotor component (2), stop rod (3), stop ring (4), stop ring guide rail (5), silk braid pressing plate (6), valve body (7), needle assembly (8), silk braid (9), valve seat (10), delivery line (11), ingress pipe (12), wherein, stop ring (4) and stop ring guide rail (5) are enclosed within on the valve rod on needle assembly (8) top, needle assembly (8) upper end and magnetic rotor component (2) are affixed, and stop ring guide rail (5) hooks magnet rotor link (17), valve seat (10) is compressed into the through hole of valve body (7) bottom, and welded seal is integral with it, the lower part of needle assembly (8) packs into silk braid (9), and push down silk braid (9) with silk braid pressing plate (6), make it with the valve seat (10) of valve body (7) bottom on step close contact, silk braid pressing plate (6) and valve body (7) upper inner edge interference fit or be welded as a whole, valve bonnet (1) is overlapping magnetic rotor component, again by integral the top edge welded seal of the lower limb of valve bonnet (1) and valve body (7), ingress pipe (12) inserts the through hole of valve body (7) side and welded seal is integral with it, delivery line (11) is overlapping valve seat (10) bottom and is being compacted to valve body 7 and contacts, and by integral this three's welded seal, described needle assembly (8) comprises valve rod (13), screw mandrel (15), needle spring (14), needle (16), and described valve rod (13) is affixed integral with screw mandrel (15), described needle spring (14) is placed in described screw mandrel (15) inside, the top of described needle (16) is positioned at screw mandrel (15) and is enclosed within needle spring (14), described magnetic rotor component (2) comprises magnet steel (18) and described magnet rotor link (17), and described magnetic rotor component (2) is provided with inner chamber, in described inner chamber, be provided with the valve rod (13) fixing with described magnet rotor link (17), described inner chamber is also provided with the stop ring guide rail (5) of fixing and be enclosed within described valve rod (13) outside with described magnet rotor link (17), stop ring (4) is enclosed within on described stop ring guide rail (5), and can and do relative motion with it along stop ring guide rail (5), described stop ring guide rail (5) one end is the roundabout structure that curves buckle, the top of described magnetic rotor component (2) is fixed with magnet rotor link (17), and described valve rod (13) is affixed integral by described magnet rotor link (17) central through bore and described magnet rotor link (2), the outer wall of described magnet rotor link (17) is provided with two grooves, and described stop ring guide rail (5) is connected with described magnet rotor link (17) by these two grooves, on the end face of described magnet rotor link (17), can there is through hole, described stop rod (3) is fixed together with silk braid (9) and silk braid pressing plate (6), described silk braid (9) wall has multiple perforation, individual step is arranged at described valve seat (10) top, so that silk braid (9) location.

Above a kind of embodiment of a kind of electric expansion valve provided by the utility model is described in detail, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims

1. an electric expansion valve, valve comprises valve bonnet (1), magnetic rotor component (2), stop rod (3), stop ring (4), stop ring guide rail (5), silk braid pressing plate (6), valve body (7), needle assembly (8), silk braid (9), valve seat (10), delivery line (11), ingress pipe (12), it is characterized in that, stop ring (4) and stop ring guide rail (5) are enclosed within on the valve rod of needle assembly (8), stop ring guide rail (5) hooks magnet rotor link (17), in the inner chamber of described magnetic rotor component (2), be provided with the stop ring guide rail (5) of fixing and be enclosed within described valve rod (13) outside with described magnet rotor link (17).

2. electric expansion valve as claimed in claim 1, is characterized in that, stop ring guide rail (5) one end is the roundabout structure that curves buckle.

3. electric expansion valve as claimed in claim 1, is characterized in that, on the end face of described magnet rotor link (17), can be provided with through hole, and the quantity of described through hole is 1-16.

4. electric expansion valve as claimed in claim 1, it is characterized in that, on described magnet rotor link (17) annular end face, can only have central through bore, and described magnet rotor link (17) annular end face can shear one or more snippets cambered surface, thereby form upper lower through-hole.

5. electric expansion valve as claimed in claim 1, is characterized in that, described stop rod (3) is fixed together with silk braid (9) and silk braid pressing plate (6).

6. electric expansion valve as claimed in claim 1, is characterized in that, described silk braid (9) but improved plastics structural shape, described stop rod (3) and described silk braid pressing plate (6) can be together with silk braid (9) be injection-moulded in.

7. electric expansion valve as claimed in claim 1, is characterized in that, described silk braid (9) wall has 1-8 perforation, and the equivalent diameter in hole can be not identical.

8. electric expansion valve as claimed in claim 1, is characterized in that, individual step is arranged at described valve seat (10) top, so that silk braid (9) location.

9. electric expansion valve as claimed in claim 1, it is characterized in that, the outer wall of described magnet rotor link (17) is provided with two grooves, and described stop ring guide rail (5) is connected with described magnet rotor link (17) by these two grooves.