CN209494714U - A kind of rolling rotor compressor cylinder and its compressor - Google Patents

Abstract

The utility model discloses a kind of rolling rotor compressor cylinders, the side wall of the cylinder is equipped with blade groove and the suction hole through the side wall, the suction hole has the first opening in the inner surface of the side wall, there is the second opening on the outer surface of the side wall, first opening has closed contour line, the contour line is the straightway that plane is rotated perpendicular to rolling-rotor farthest away from one end of the blade groove, and the length of orthographic projection of the enclosed shape of the contour line in rolling-rotor rotation plane is less than the diameter of a circle with the shape homalographic.The utility model is by changing opening shape of the suction hole on inner wall, the closing angle of suction hole is set to become smaller, backflow phenomenon caused by injection has been reduced to a great extent, and by the suction hole partial segmentation of cylinder be to be assembled integrally after mold compression moulding is respectively adopted in upper lower cylinder body, the perfect preparation process of cylinder.

Description

A kind of rolling rotor compressor cylinder and its compressor

Technical field

The utility model relates to a kind of rolling rotor compressor cylinder and its compressor and prepare mold.

Background technique

The working cycles of rolling type compressor can be divided into three air-breathing, compression and exhaust processes, when the rotor rotates, rotor Groove is closed by enclosure wall, forms compression chamber, and after rotor recesses closing, lubricating oil is injected into compression chamber, is risen and is sealed, is cold But and lubricating action.When rotor rotary compression gas mixture, compression chamber's volume reduces, and compresses air-fuel mixture to exhaust outlet Object.When exhaust outlet passes through in compression chamber, gas mixture is discharged from compressor, completes an air-breathing --- compression --- exhaust Process.

Compresser cylinder is fastened on compressor body, is the component for cooperating compressed gas.But currently, in the gas of compressor In cylinder setting, the design of the suction hole of cylinder due to processing method relationship, the opening on cylinder surfaces be only it is round or Person's ellipse will cause air entry in this way and close the biggish defect of area, be easy to cause gas to flow backward in spraying machine, influences gas Cylinder normal suction.

Therefore, it for disadvantages described above, needs effectively to innovate the prior art.

Utility model content

Opening shape of the suction hole on cylinder inner wall is round or oval (as shown in Figure 1) in the prior art, this The shortcomings that kind shape, is that, in the case where opening area is constant, the diameter or symmetry axis of round or ellipse are longer than square Or rectangular side length, then (opening distalmost end of the suction hole on cylinder inner wall and blade move the closing angle of suction hole Central angle alpha between track) will be larger (as shown in Figure 2), such case be easy to cause gas to flow backward in injection machine Situation.

In view of drawbacks described above existing in the prior art, the purpose of this utility model makes suction hole on cylinder inner wall The distalmost end that is open is closer to blade groove, to reduce the air-breathing closing angle of suction hole.

To achieve the above object, on the one hand the utility model provides the special suction hole that can reduce above situation generation Structure and rolling rotor compressor cylinder with the structure further mention on the other hand from the processing method of cylinder A kind of rolling rotor compressor cylinder of combining form is supplied.

Firstly, the utility model provides a kind of rolling rotor compressor cylinder, the side wall of the cylinder is equipped with blade Slot and suction hole through the side wall, which has the first opening in the inner surface of the side wall, in the side wall There is the second opening, first opening has closed contour line, and the contour line is farthest away from the blade groove on outer surface One end is the straightway perpendicular to the end face of the cylinder.

Further, the length of orthographic projection of the enclosed shape of the contour line on the reference plane perpendicular to the cylinder-bore axis Degree is less than the diameter of a circle with the shape homalographic.

Further, the shape of second opening is round or oval.

Preferably, the shape of first opening is rectangle or semicircle.

In a kind of preferred embodiment of the utility model, the shape of first opening is rectangle, and this is rectangular For the long side of shape perpendicular to the end face of the cylinder, short side is parallel to the end face of the cylinder.

Preferably, the suction hole is made to become one using smooth transition between first opening and second opening Body formula air intake passage.

More specifically, rolling rotor compressor cylinder provided by the utility model includes by annulus and on the outside of the annulus The fan-shaped lug boss extended to form, on the side wall of the annulus being radially equipped with a depth from inside to outside, to be deep to the sector convex The blade groove in the portion of rising, the blade groove axially penetrates through the annulus and the fan-shaped lug boss, in the side of the fan-shaped lug boss Ecto-entad is equipped with a spring eye on wall, and the spring eye is coaxial with the blade groove and depth is deep to inside the annulus, The suction hole through the annulus and the fan-shaped lug boss is additionally provided on the side wall of the cylinder, the suction hole is in the side wall There is the first opening on surface, there is the second opening on the outer surface of the side wall, first opening has closed wheel Profile, the contour line farthest away from one end of the blade groove be perpendicular to the cylinder end face straightway.

Further, the length of orthographic projection of the enclosed shape of the contour line on the reference plane perpendicular to the cylinder-bore axis Degree is less than the diameter of a circle with the shape homalographic.

Preferably, the suction hole being arranged radially along the annulus.

Preferably, at least partially or fully described compresser cylinder comprising the suction hole is by that can correspond to two of combination Cylinder body is divided to be formed by connecting.

On the other hand, the utility model further provides suction hole described in above-mentioned rolling rotor compressor cylinder Forming method, this method are the air-breathing hole formings for making specific form using the method for mold compacting.

Further, the utility model provides a kind of rolling rotor compressor cylinder of combining form；The cylinder be On the basis of above-mentioned air cylinder structure, cylinder is split as upper cylinder body and lower cylinder body, entire cylinder by mutual corresponding upper cylinder body and Lower cylinder body is formed by connecting.

Preferably, the upper cylinder body and the lower cylinder body are respectively by mold compression moulding.

Preferably, the upper cylinder body is identical with the axial height of the lower cylinder body.

Optionally, the connection type of the upper cylinder body and the lower cylinder body can be embedded clamping, glue bonding etc..

Finally, the utility model is provided for making the molding mold of the suction hole, the mold is preferably by mutual Corresponding a pair of mold is to composition, such as the mold for suppressing the upper cylinder body and/or the lower cylinder body.

Preferably, the mold is the mold with several pairs of corresponding concaveconvex structures to (being divided into two up and down), so as to upper When lower two parts close up, it will not misplace.

Preferably, the mold is in the corresponding concaveconvex structure of mirror surface to having.

Finally, the utility model additionally provides the compressor including above-mentioned rolling rotor compressor cylinder.

The utility model provides a kind of rolling rotor compressor cylinder, which changes suction hole on inner wall Opening shape makes the closing angle of suction hole become smaller, and backflow phenomenon caused by injection has been reduced to a great extent, using in molding The form of lower cylinder body combination, the perfect manufacture craft of special sucting hole structure, easy to produce and processing.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of rolling rotor compressor cylinder in the prior art；

Fig. 2 is the closing angle schematic diagram of rolling rotor compressor cylinder in the prior art；

Fig. 3 is the structural schematic diagram of the rolling rotor compressor cylinder of an embodiment of the present invention；

Fig. 4 is the structural schematic diagram of the rolling rotor compressor cylinder lower cylinder body of an embodiment of the present invention；

In figure:

1, annulus；2, fan-shaped lug boss；3, blade groove；4, spring eye；5, suction hole；51, the first opening；511, it first opens Farthest away from the straightway of blade groove in mouth contour line；52, the second opening.

Specific embodiment

Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation It is bright, to be fully understood from the purpose of this utility model, feature and effect.

As shown in figure 3, rolling rotor compressor cylinder includes by annulus 1 in one embodiment of the utility model And the fan-shaped lug boss 2 extended to form on the outside of annulus 1, it is radially equipped with a depth from inside to outside on the side wall of annulus and is deep to The blade groove 3 of the sector lug boss 2, the blade groove 3 axially penetrates through the annulus 1 and the fan-shaped lug boss 2, in sector Ecto-entad is equipped with a spring eye 4 on the side wall of lug boss 2, and the spring eye 4 is coaxial with the blade groove 3 and depth is deep to institute It states inside annulus 1；Being radially provided with through the annulus 1 and the fan-shaped lug boss 2 along annulus 1 on the side wall of the cylinder Suction hole 5, which has the first opening 51 in the side wall inner surfaces, and shape is rectangle, which exists Cylinder sidewall outer surface has the second opening 52, and shape is circle, and the first opening 51 has closed contour line, farthest away from One end of blade groove 3 be perpendicular to the cylinder end face straightway 511, and 511 be the rectangular long side, and its short side compared with Short, length makes rotor can while again smaller than the diameter of a circle with the rectangle homalographic less than the diameter of the second opening 52 Suction hole is closed at the position closer to blade groove 3, so that the closing angle α of suction hole be made to become smaller, becoming smaller for the angle can Significantly improve the phenomenon that gas flows backward.

Due to the utility model suction hole it is in irregular shape, it is difficult to be integrally formed, therefore embodiment additionally provides use Mold suppresses the preparation process of upper and lower cylinder body respectively, wherein the structure of lower cylinder body as shown in figure 4, lower cylinder body by half height Annulus 1 ' and fan-shaped lug boss 2 ' are constituted, thereon the lower half portion 3 ' with blade groove, the lower half portion 4 ' of spring eye and air-breathing The lower half portion 5 ' in hole, wherein the contour line of the first opening 51 ' is not closed trilateral structure, with straightway 511 ', the The contour line of two openings 52 ' is semi arch, uses smooth transition inside the suction hole between two openings.The lower cylinder body can be by lower die Has compression moulding, the recess on cylinder body corresponds to the convex of lower mold, the recess of the corresponding lower mold in the convex on cylinder body；Correspondingly, Upper cylinder body is by, in the corresponding upper mold compression moulding of mirror surface, they form the mould with several pairs of corresponding concaveconvex structures with lower mold Tool pair, when closing up so as to upper and lower two parts, will not misplace.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (9)

1. a kind of rolling rotor compressor cylinder, side wall is equipped with blade groove and the suction hole through the side wall, described Suction hole has the first opening on the inner surface of the side wall, has the second opening on the outer surface of the side wall, special Sign is, first opening has a closed contour line, the contour line farthest away from one end of the blade groove be perpendicular to The straightway of the end face of the cylinder.

2. rolling rotor compressor cylinder according to claim 1, which is characterized in that the enclosed shape of the contour line exists It is less than the diameter of a circle with the shape homalographic perpendicular to the length of the orthographic projection in the reference plane of the cylinder-bore axis.

3. rolling rotor compressor cylinder according to claim 1, which is characterized in that it is described second opening shape be Round or ellipse.

4. rolling rotor compressor cylinder according to claim 1, which is characterized in that it is described first opening shape be Rectangle or semicircle.

5. rolling rotor compressor cylinder according to claim 1, which is characterized in that it is described first opening shape be Rectangle, and the rectangular long side, perpendicular to the end face of the cylinder, short side is parallel to the end face of the cylinder.

6. rolling rotor compressor cylinder according to claim 1, which is characterized in that first opening and described the Using smooth transition between two openings.

7. rolling rotor compressor cylinder according to claim 1, which is characterized in that at least comprising the suction hole The part or all of compresser cylinder is formed by connecting by two parts cylinder body that can correspond to combination.

8. a kind of rolling rotor compressor cylinder, which is characterized in that including being extended to form by annulus and on the outside of the annulus Fan-shaped lug boss, be radially equipped with the leaf that a depth is deep to the fan-shaped lug boss from inside to outside on the side wall of the annulus Film trap, the blade groove axially penetrates through the annulus and the fan-shaped lug boss, by outer on the side wall of the fan-shaped lug boss It is provided inwardly with a spring eye, the spring eye is coaxial with the blade groove and depth is deep to inside the annulus, in the cylinder Side wall on be additionally provided with suction hole through the annulus and the fan-shaped lug boss, interior table of the suction hole in the side wall There is the first opening on face, there is the second opening on the outer surface of the side wall, first opening has closed profile Line, the contour line farthest away from one end of the blade groove be perpendicular to the cylinder end face straightway, the contour line The length of orthographic projection of the enclosed shape on the reference plane perpendicular to the cylinder-bore axis is less than and the shape homalographic Diameter of a circle.

9. a kind of rolling rotor compressor, which is characterized in that including rolling-rotor according to claim 1-8 Formula compresser cylinder.