KR100822399B1 - Pulse-inplation valve - Google Patents

Abstract

An electronic expansion valve is provided to additionally form a stopper to a plate stopper for fixing a body valve to a stator core stably and additionally form a fitting protrusion to a location plate to be fitted in a coupling hole of the plate stopper, thereby fixing the location plate to a valve body stably. An electronic expansion valve includes a plate stopper(30) having a fixing part(35) formed with fitting holes(32) at a side corresponding to a plurality of protrusions(21) of a stator core(20) to be coupled with the protrusions, a coupling part(34) formed with a coupling hole(33) apart from the fitting holes, and a stopper(31) between the fitting holes and the coupling hole to be bent towards a lower surface of the stator core for preventing a protrusion type embossing(12) of a location plate(11) from advancing into the fixing part by shock. The portion formed with the stopper in the plate stopper is apart from the lower surface of the stator core so as to be coupled with the protrusion type embossing of the location plate via rotation.

Description

Electric expansion valve {pulse-inplation valve}

1 is a perspective view showing a stopper structure of an electric expansion valve according to a first embodiment of the present invention.

2 is a perspective view of a plate stopper according to the first embodiment of the present invention;

3 is a cross-sectional view illustrating A-A of FIG. 2.

Figure 4 is an exploded perspective view showing a stopper structure of the electric expansion valve according to the first embodiment of the present invention.

[Code Description of Main Part of Drawing]

10: valve body 11: locate plate

12: protrusion emboss 20: stator core

21: projection 22: fixing projection

30: plate stopper 31: stopper

32: fixing hole 33: coupling hole

34: coupling part 35: fixing part

36: bend

The present invention relates to an electric expansion valve, and more particularly, a stopper is added to the plate stopper to further secure the valve body fixed to the stator core, and is formed on a circumferential surface to which the plate stopper of the stator core is fixed. The present invention relates to an electronic expansion valve that can fix the valve body more firmly by adding a fixing protrusion.

Generally, the electric expansion valve is used as a component of an air conditioner, a freezer, a heat pump, etc. to change a liquid refrigerant into a gaseous state, and adjust the flow rate of the fluid by a nozzle contacting or separating the orifice in the valve chamber. A valve body is provided, and has a case having a rotor fixed to the valve body to contact or separate a needle, and a stator externally wound on the case is provided to drive the rotor in rotation. It is formed and used to fix the stator and the valve body at the same time as having a fitting hole into which the case of the stator is fitted.

The method of fixing the valve body and the stator uses a method of coupling using a plurality of fitting holes press-formed to the valve body case, and the press-molded product uses stainless steel, so that deep drawing processing and many fitting holes are performed. Molding has a complicated mold structure and a high cost problem, and since the stator part requires a structure into which a separate fixing assembly structure is inserted, it is composed of an assembly structure in which a manufacturing cost of a stator and a separate press part are added.

In addition, the fixing and assembling method is formed in a square shape including a separate fixing groove in the stator to assemble the separate press parts, there is a method of assembling and fixing through the refrigerant inlet pipe of the valve body, this assembly method is easily assembled However, there are disadvantages in that the valve body and the stator are easily separated, and a pipe made of copper can be easily deformed.

The present invention has been made to solve the above problems, an object of the present invention is formed by adding a stopper to the plate stopper for more rigid fixing of the main body valve fixed to the stator core, the plate of the stator core The fixing protrusion is added to the circumferential surface on which the stopper is fixed, and is fixed to the coupling hole of the plate stopper to provide a stopper structure of the electronic expansion valve that can fix the plate more firmly.

The present invention penetrates the valve body is attached to the locator plate formed with a plurality of embossed embossed circumference on the outer circumferential surface, and the stator core having a plurality of projections in the circumferential direction on the lower surface through In the electric expansion valve comprising a, a fixing hole corresponding to a plurality of protrusions formed on the lower surface of the stator core is formed on one side is coupled to the protrusion, the coupling hole is formed spaced apart from the fixing hole, And a plate stopper having a stopper bent in the direction of the lower surface of the stator core to prevent the protrusion embossing from entering the fixing part side by impact between the fixing hole and the coupling hole.

In addition, the valve body is attached to the locator plate is formed on the outer circumference with a plurality of projection embossed on the circumference, the stator is formed on one side, the inside is penetrated so that the valve body is coupled, a plurality of in the circumferential direction A projection is formed, and the fixing projections other than the projection coupled to the fixing hole is configured to include a stator core is further formed apart from the projection, the plate stopper is a stopper formed portion of the projection plate of the projection type It is formed spaced apart from the lower surface of the stator core to be rotatably coupled to the emboss.

The present invention having the above characteristics will be described more clearly through the preferred embodiment accordingly.

Hereinafter, a preferred embodiment of the present invention will be described in detail with the accompanying drawings.

1 is a perspective view showing a stopper structure of an electric expansion valve according to a first embodiment of the present invention, Figure 2 is a perspective view of a plate stopper according to a first embodiment of the present invention, Figure 3 is a AA of Figure 2 4 is an exploded perspective view showing the stopper structure of the electric expansion valve according to the first embodiment of the present invention.

1 to 4, a locator plate 11 is formed on the outer circumferential surface of the main body valve 10, and a circular protruding emboss 12 is easy to manufacture on the outer circumferential surface of the locate plate 11. Is protruded to the upper side in the drawing is formed a plurality.

The inside of the valve body 10 is coupled to each other, and a plurality of protrusions 21 are formed in a circumferential direction on a lower surface of the valve body 10 to which the valve body 10 is coupled. In the opposite position, the stator core 20 formed of the protrusion 21 having the same shape as the protrusion 21 is formed.

In addition, the plate stopper 30 is coupled to the stator core 20 is formed so that a pair is opposed to each other based on the through portion of the stator core 20 to fix the locate plate 11 of the valve body 10 Is largely divided into a fixing part 35, a bent part 36, a coupling part 34, and the coupling part corresponding to the protrusion embossing 12 so that the protrusion embossing 12 can be fixed to the coupling part 34. 33 is formed at one end surface, and a plurality of fixing holes 32 corresponding to the protrusion 21 of the stator core 20 are formed at the fixing part 35 to be coupled to the protrusion 21. Between the coupling hole 33 and the bent part 36 to be described later, the locate plate 11 is bent toward the lower surface of the stator core 20 in order to prevent entry into the fixing part 35 side during rotational coupling. A stopper 31 is formed, and the fixing part 35 is formed on the upper surface of the stator core 20 in the drawing. And, wherein the engaging portion Kate plate 11 is formed with a spaced apart so that the rotary coupling.

2 and 3 is a perspective view of the stopper, Figure 3 is a cross-sectional view AA of Figure 2, the stopper 31 is largely divided into a fixing part 35, a bent part 36, the coupling part 34, Since a certain tensile force is required even after repeated operations, a stainless steel material is used, and the fixing part 35 is formed by a plurality of fixing holes 32 formed by welding to the protrusion 21 formed in the stator core 20. Is coupled, the bent portion 36 is formed to be bent to match the height of the fixing portion 35 and the coupling portion 34, the coupling portion 34 has a coupling hole 33 is located in the locate plate 11 It is formed on one end surface so that the upper portion of the protruding emboss 12 is coupled during rotation coupling, the fixing portion by the impact during rotation coupling of the locate plate 11 between the coupling hole 33 and the bent portion 36 Stopper 31 for entering the (35) side to prevent the plate stopper 30 is deformed Is formed to be bent in the direction of the lower surface of the stator core 20, whereby the outer peripheral surface of the rotary coupling when the protruding emboss 12 of Kate plate 11 in the take can block the entry of the side of fixing.

Referring to Figure 4 as an exploded perspective view of the stopper structure of the electric expansion valve according to the first embodiment of the present invention fixing holes of the plate stopper 30 in the plurality of protrusions 21 formed on the lower surface of the stator core 20 ( 32 is coupled by welding, and the plate stopper 30 is coupled to the coupling hole 33 so that the coupling hole 33 formed at one end of the coupling portion 34 can be coupled to the upper portion of the protruding embossing 12. ) Is smaller than the diameter of the projecting emboss 12, the lower surface of the valve body 10 is coupled to the through portion formed in the center of the stator core 20 in the drawing is the outer peripheral surface of the valve body The stopper described in FIGS. 2 and 3 is formed so that the locate plate formed in the rotating stop can be fixed to the plate stopper, the same effect as the stopper 31 on the upper surface of the stator core 20 in the drawing Fixing projections (22) It is further provided.

The present invention relates to an electric expansion valve, and more particularly, a stopper is added to the plate stopper for fixing the plate fixed to the stator core more firmly, and fixed to the circumferential surface on which the plate stopper of the stator core is fixed. The protruding protrusion is added to form the stopper and the fixing protrusion so that the outer circumferential surface of the protruding embossment of the valve body is prevented from entering the fixing part, thereby preventing damage to the plate stopper.

Claims (3)

A valve body 10 having a locator plate 11 having a plurality of protrusion embosses 12 formed on a circumference thereof, and a through portion formed therein so that the valve body 10 may be coupled therein, and the valve body ( A stator core 20 having a plurality of protrusions 21 formed in a circumferential direction on a surface in contact with the locate plate 11 when 10 is inserted into the penetrating portion, the valve body 10 and the stator core 20 In the electric expansion valve comprising a plate stopper (30) installed to firmly fix the The plate stopper 30 is fixed to the fixing part 35 having a fixing hole 32 is in close contact with the surface in contact with the locate plate 11 of the stator core (2) is installed when coupled to the plurality of protrusions 21 And a coupling part 34 including a bending part 36 extending from the fixing part 35 and upwardly curved, and a coupling hole 33 extending from the bending part 36 and engaging the protrusion emboss 12. And a protruding stopper 31 formed between the fixing hole 32 and the coupling hole 33 to prevent the protrusion-type embossing 12 from entering the fixing part 35 side by impact. Electric expansion valve, characterized in that consisting of. The method of claim 1, The stator core 20 is further spaced in the circumferential direction of the protrusion 21 to prevent the projection emboss 12 from entering the fixing part 35 side by impact, and the fixing protrusion 22 is further formed. Electric expansion valve characterized in that. The method of claim 1, The plate stopper 30 is coupled to the coupling portion 34 is characterized in that the projection is formed so as to be spaced apart from the surface on which the projection of the stator core 20 is formed to be coupled to the coupling portion 34 Expansion valve.

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