TWI308616B - Screw fluid machines - Google Patents

Description

1308616 VIII. Description of the Invention: [Technical Field] The present invention relates to a helical fluid machine, and more particularly to a fluid machine in which a strip produces a helical rotor tooth profile in a right angled manner, the fluid:: Shrinking, blasting or vacuum working environment, with reduced rotor = cost and time, rotor tooth shape improved elasticity and rotor torque distribution reasonable [Prior Art] ^ 疋 type fluid machine in today's cold air conditioning, aerodynamics, vacuum ring The most critical component is the spiral-toothed rotor that runs parallel to each other in the machine. It is shown by the research of the rotor before the basic working process. Spiral C has a great influence on the efficiency of fluid machines... Century 7. In the early stage of the dry generation, the 'asymmetric tooth shape is replaced by the use of the efficiency, and the trace is raised against the shank arc tooth shape. 'In the I reducer, the power consumption should be reduced in recent years, and the τ reaches the noise reduction and the knot Μ' in the tooth shape. The design is more k-shaped and force-shaped, 7 to X goods, ^ ^ 4, once successfully designed out of the ancient will make the performance of the fluid machine more on the market; competitive wide 's month see the United States Patent No. 6,296,461 lacking of a squirrel & has a cycloidal segment, &, characterized by the use of a wire line & rack line to create a * tooth shape, the cycloid segment used to create a male;;; = female rotor end Sealing and maintaining a small blowback hole, and telling you the green rotator's south side of the flank, it is possible to generate an involute at the rotor pitch circle: the relative motion of the straight line & is close to the ideal at the pitch circle ^ is beneficial Torque transmission, such as 1308616, the female rotor can have a larger cross-sectional area and stronger blade than any existing spiral compressor, which will contribute to the distribution of the male and female rotor torque. However, the prior patent The design has the following disadvantages: ·, the rack creates a rotor tooth profile that is a right angle of the shaft In this way, as long as the rotor helix angle is changed, the same-hobbing knife (Hob) cannot be used to cut the teeth, and the tool change must be performed. This will increase the time and cost of the operation. Second, the straight line segment of the rack is limited. On the pitch line, the money will not be allowed to be transferred to create the rotor tooth shape, so it is impossible to generate a single-sided linear rotor with a tooth shape only in the pitch circle. Second, the definition of the rack makes the high-pressure side (four) difficult to do. Adjustment, the degree of freedom for tooth shape change will form more restrictions. SUMMARY OF THE INVENTION The object of the present invention is to provide a snail-type fluid machine with a screw-toothed rotor with a rack Picking tooth drawing, *^ Right angle method to generate 'When the size is constant and only the helix angle is changed, still use the same Hobbing knife (Hob) to process: the sub-groove 'because the rack curve is the cutting edge The shape of the mouth can avoid the increase of the cost of the tool change and the manufacturing cost. At the same time, the cutting speed of the hobbing will be despicable. The cutting speed of the disk type cutter will be faster and more irritating, and the shape of the rack is defined by the rack. Improved 'also makes the rotor tooth shape Excellent _ n ^ m 疋 adjust the elasticity, can be used in different applications, such as compressors or blowers, the best shape for the conditions and conditions of the teeth of the above-mentioned H & The invention of the spiral fluid machine package 3 has a casing, a 4: -7, - or a plurality of secondary rotors and a rack, and its 1308616 is a rattle λ and a limb η ι 栝 has a volume chamber for the spiral rotor including At least one main Korean and at least one rotor are disposed, the main shank and the door F are in the 子 #子和田J rotors each having a plurality of spiral lobes and a snail spaced between the helical lobes. ^ 疋 ω ^, 忒The main rotor spiral tooth blade is inserted into the helical tooth groove of the 刎 rotor, and the ^ ^ ^ 捋 捋 螺 红 红 红 也 也 也 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The helical tooth surface of the phase and phase = the plane perpendicular to the axis of the spiral rotor is called the right angle plane of the shaft, and the plane of the plane clamp-rotor helix angle is called the right angle plane (normal plane), and the sub-projection is the tooth surface of the right angle plane. Shape, and the tooth shape projected on the two right-angle planes is called the normal tooth shape. Generally, when defining the rotor, the size and the tooth shape on the right-angle plane (end surface) of the test axis are given. Generally, the center distance of the end face is given 4, and the number of teeth of the main rotor is given. ;, the number of teeth of the secondary rotor &, the outer circumference of the main rotor end m, the diameter of the outer rotor end of the outer rotor is 2, the length of the rotor spiral rotor, and the diameter of the main rotor end diameter and the diameter of the minor rotor end pitch a It can be expressed by the following formula: du=2Acl{\ + mn) d2t = 2Acmn /(ml2 +1) where ' mI2 = z2 /3 is the rotor speed ratio. - Rack, which is defined on the right-angle plane (normal surface) of the tooth, and its composition curve is connected by the material, including: an arc AB, a straight line BC, a normal equidistant trochoidal CD, a normal surface, etc. From the pendulum, the line Μ, an arc EF, an elliptical arc—a straight line GH, an arc m, and a straight line π, wherein the definition of the two equal-surface equidistant trochoidal lines CD and DE will cause the rotor to leak back Hole reduction; (3) (4) (5)

1308616 can be regarded as a semi-infinite rotor tooth profile to generate the main and auxiliary rotor helical tooth faces of the mutual spray & the system consists of a number of curves and is defined on the normal surface, which is the definition of the French rack. The resulting rotor face tooth profile and the face frame rack will be greatly different from the prior art rotor and rack shape 'the normal tooth pitch of the rack κ, the high calendar side normal force angle' and the low history method The surface pressure angle V is 盥立生; also the relationship between the knife tooth H and the tooth pitch 汛, the high pressure side end pressure and the low dust side end pressure angle γ is as follows: - K = Rcosp = (X/z] C〇s 夕 w = tan-1 (tan w, cos eve) v = tan-1 (tan v, cos/?) In addition, the crown height d and the root height of the rack are calculated as follows: dl = (D2t_d2t) /2 (6) d2 = (Du-du)/2 ^ (7). The spiral tooth of the main rotor of the sea is generated by the concave side of the above-mentioned rack, and the screw of the secondary rotor is read (4) by the same - money convex The side is generated such that the helical tooth flanks of the main rotor and the helical tooth flanks of the sub-rotor can mutually mesh with each other. The redefinition of the rotor tooth form by the rack makes the original straight shaft The rotor tooth profile generated by the angular mode is improved, and the rotor tooth profile generated by the right angle of the tooth can be processed by the same Hobbing tool (Hob) to make the rotor tooth groove even after changing the rotor helix angle, thereby reducing the manufacturing process and The time of the tool change. The present invention and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments.

As shown in the four figures, the preferred embodiment of the spiral fluid machine of the present invention utilizes a rack to create a rotor tooth shape at right angles to the rotor. The variegated spiral angle record still uses the same hobbing: (Hob) has the advantage of machining the rotor groove' and uses hobbing to cut faster than the disc type sharp knife, reducing the manufacturing cost and the time of tool change. In the definition of the French rack, it is different from the prior art, so that the rotor tooth shape has greater improved elasticity on the high pressure side. It is suitable for the optimal design of the dome shape under different applications and conditions, including: - shell Body 5, a main rotor, a plurality of sub-rotor 2, and a normal rack 3. Or, the casing 5 of the present embodiment has a volume chamber 51 for the main rotor 丨 and the sub rotor 2, and the main rotor 1 and the sub rotor are operated. The helical tooth faces are 4 and parallel to each other

Helical cogging, the main rotor i of the screw and the slot between the helical tooth blades, the right angle plane tooth ... - the circle is called the main; the main turn: the outer = and the (...) radius of the - or most The secondary rotor 2 is 0 13 per inner. The leaves and the spiral teeth spaced between the spiral teeth are inserted in the main rotation... The end of the two-star corner AA on the toroidal groove 9 1308616 The tooth profile is called the secondary rotor end face tooth shape 24, with a diameter & It is called the sub-rotor pitch circle 21, with a diameter of 2, a circle of the outer ring 22 of the rotor, and a circle with a radius of (4-4/2) is called the inner circle 23 of the secondary rotor. 1 ^ The normal rack 3 is defined on the right angle plane B_B of the tooth, which can be regarded as the rotor tooth shape with infinite radius. The general crown height is in the range of _5, and the height of the two tooth root is in the range of _~〇.35H , wherein the crown height can be used to set the indexing amount of the rack, that is, to adjust the height of the rack pitch line, when

When it is zero or negative, the rack will be designed to have a single-sided rotor tooth shape with a tooth shape only on one side of the pitch circle; in addition, the 'the normal rack 3 is smoothed by the sequence. The segment curve consists of 'each segment is expressed under the normal coordinate rack coordinate system Μ(8), ^(8), including: an arc ΑΒ, a straight line BC, a normal equidistant trochoid CD, a normal isometric The trochoidal DE, one (four) EF, an elliptical orphan FG, the straight line GH, an arc HI, and the straight line ij; an arc AB whose curve type is: +, less = Λ + , where 0 is the curve parameter ' ρ = The radius of the arc is used to adjust the curvature of the arc. The range is (0·005~〇1Η, % and 八 are the coordinates of the center of the circle. The arc is used to generate the high-pressure side root (top) of the main (sub) rotor, so that the tooth shape has A smooth curve for oil film formation and noise reduction; a straight line BC, the curve type is: ζ = χ〇 + ", less = y〇 + v, where % and less 〇 are the coordinates of point B ί is the length of the line, the range For (〇~〇.〇5) j , the unit tangent vector Ϊ = {&,&} of the line has an angle with the vertical line. For adjustment, the range is 5. ~15. It is used to control the pressure angle of the high-pressure side tooth surface of the main and auxiliary rotors. It has great improvement effect on torque transmission. 10 1308616 This line is used to generate the main (sub) rotor. The high-pressure side involute tooth profile; a normal equidistant trochoidal CD, the curve type is: ^ = KcosM + ^〇sinW-(^/2)W]cos/? > y = -x〇smu + y〇cosu~(d2l/2).

The creation method is as shown in the fourth figure, the gas and the point c' which is projected to the point c' on the end face, and the point c is extended outward to extend a & length to point c", point (^, , is fixed on the female rotor pitch circle 21, so that the female rotor pitch circle 21 rolls to the left on the end face rack pitch line, point C, and a pendulum line is generated to make the pitch line extend inwardly. A distance κ times distance from the point C is obtained from the yaw line C, _D, and finally the pitch yaw line (9) is projected onto the normal surface B_B to obtain a normal equidistant trochoid line (3), wherein the extension The length / r range is _5~〇15)4, which can be used to adjust the radius of curvature of the crest-shaped circular tooth shape on the high-pressure side of the secondary rotor; ' 荨 次 摆 DE DE, its curve type is: 冲+ (御C0Sh = x - i_ + ((10), its creation method is as shown in the fourth figure, and the coordinates of the point D, the point D, the point d, the extension of the law inward -: the length of the point ° ", Point D" is fixed to the pitch of the male rotor ^ on the 'the common rotor pitch circle 21 is rolled to the right on the face rack section line 41, and the point D" will generate a - trochoidal line, and the trochoidal line is oriented forward. The outer offset is the distance back to the point D, which is 1 The trochoidal line (4), and finally the pitch yaw line (4) is placed on the 々 々 Β Β 即 即 即 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等 等~〇15)j, 'c J is used to adjust the curvature of the ω top loosely closed scallop of the high-pressure side of the main rotor 1. The second two equal-distance trochoids are used to create the main (sub) rotor. The high-pressure side produces deer, the ancient donkey + human, ". The abdomen is beneficial to prevent the high-pressure gas from venting at the exhaust end", the suction end and the leakage area are greatly reduced; - the arc EF, the curve type is -^o +pcos^ ^ y = y0+ psind 11 1308616 , where % and % are centered on the origin of the rack coordinate system, p = they are arc radius 'parameter γ is between 〇. 1 10. The circular arc function is used to create the main rotor 1 high-pressure side tooth top protection surface, so that the main rotor 1 tooth top seal circle is created by the 0-section segment to avoid the main rotor i seal round belt wear; an elliptical arc FG, the curve The type is:

Less 'where 0 is the curve parameter, '% and % are the center coordinates of the ellipse L® sister radius and ^ is the elliptical short axis radius. This elliptical arc is used to create the low-pressure side flank, long axis of the main (田|J) rotor The radius & can be adjusted, the range is (0.5~2, 〇K ' makes the arc and the straight line gh connecting the ends of F and G have better adjustment elasticity ·, 直 GH, the curve type is medium / And the coordinates of the recognition point I, s is the length of the line, the range is (4) from the unit of the line tangent vector ΐ = 匕 '} and the vertical line is reserved - the angle angle river for adjustment, the range 纟 10 ~ ~ 30., used to control The dust 贞' of the low surface f of the main and auxiliary rotors at the time of contact has a great improvement effect on the torque transmission, /the straight line is used to generate the low-pressure side involute profile of the main (sub)rotor; and the curve of the mouth 5 HI is curved. For: χ = χ〇 + / ^ θ, * Α curve parameter ' ρ = Α is the radius of the arc to adjust the curvature of the curve 'dry circumference at (0.005 ~ 〇 15) j } c gas and less 〇 is the center of the circle, the The arc is used to benefit the 'ΐ: the lower root of the Γ rotor (top), so that the tooth shape has a smooth curve to generate and reduce noise with the J oil film; Straight line U, the curve type is: Ηΰ + β,, % and Jo are the temple of point I ρ r cylinder 軚 The unit tangent vector of the line is ΐ = 〇, 〇} ping ding, #直线' range is 〇) ~cuK, used to adjust the secondary rotor 2 12 1308616 can generate a strong secondary rotor to properly distribute the torque of the primary and secondary rotors. As shown in the fifth figure, Kenting is in the production of the main rotor surface of the Tuss 7 house. 14 ♦ The meaning of the seat is 1 糸 ^ _ _ 3 (4): Γ = foot to get the face rack 4 ' after Reuse the concave of the end face rack 4: turn the other: transport _ « 统 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目

Coordinates: =:::== Pingyi r rotor motion coordinate system is relatively created to create a motion of ^^1 kg far. The present invention defines the main rotor end face tooth profile 14 by defining the normal toothed rack 3 by means of a tooth right angle j The auxiliary rotor end (four) shape 24, the main and auxiliary rotor end face tooth shape 24 by her and „4丄 two sides of the axial direction of the spiral to generate a spiral tooth surface with a rotor length of Ζ, the bean has a wide spiral angle, the main The rotor 1 and the W rotor 2 can be positioned to expand in the casing 5 to "t" "the operation in the cavity 51 to achieve compression or the function of the peach, and the Hob can be processed even if the rotor helix angle is changed. Making the tooth surface _ back to the cost and the time of the tool change, in addition

'The study found that in the case of changing the rotor 蟋A rotor snail & angle, the comparison of the use of the traditional, the right angle of the shaft and the right angle of the tooth r: recorded and found that the rotor linear evaluation index of the method ^ can clearly see the right angle of the tooth The shape of the rotor rotor can not only reach the performance of the _ right angle (four) rotor line shape, but with the change of the rotor helix angle, the area of the rotor linear tooth created by the right angle of the tooth will increase and the back leakage area can be maintained within a certain range. Inside, but the right angle of the shaft creates and transmits 13 1308616. The rotor line of the system is clearly defined and there is no such advantage. As shown in the seventh figure, the rack is also produced by adjusting the parameters of the pitch-shaped single adjustment only to improve the tooth shape and improve the elasticity. + make this

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention. All remain within the scope of the invention patent.

14 1308616 [Simplified illustration of the drawings] The first figure is a perspective view of the appearance of the screw-type fluid machine of the present invention, which is a preferred embodiment of the present invention; In the invention, the main and auxiliary rotors of the present invention and the face rack and the main 'surface view show the relationship between ^ - PI ^ ^ ^ 0〇^ and the wj rotor; The line segment of the strip of the strip; 4 does not constitute the normal surface of the fourth figure is the French rack in the present invention

The fifth diagram is a schematic diagram of the toothed yoke of the present invention. The fifth figure is the coordinate diagram of the toothed shape of the rotor in the present invention, showing the relative motion relationship between the tooth and the tooth shape of the primary and secondary rotors; Various rotor evaluation index diagrams showing various states and efficiencies of the rotor created by the conventional, axial right angle and right angle angle modes when the helix angle is changed; and the seventh figure is a rotor end face tooth profile of another embodiment of the present invention. , showing the shape of the different main and auxiliary rotor teeth generated after the shape of the rack is changed. 15 1308616 [Description of main component symbols] 1 ... main rotor 24 ... ... secondary rotor end face tooth profile 11 ... main rotor pitch circle 3 ... normal face rack 12 ... ... main rotor outer circle 31 ... ... normal Lang line 13 ... main rotor inner circle 32 ... center line 14 ... main rotor end face tooth profile 4 ... 纟 face rack · 2 ... sub rotor 41 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...机!^又22 ··· ...the secondary rotor outer circle 51 ··· ...the volume chamber 23...the secondary rotor inner circle 16

Claims (1)

1308616 IX. Scope of application for patents · · L kinds of spiral fluid machines, mainly including: Class body's internal volume chamber for at least _ main rotor and to small ampules, where 'the main rotor and the secondary rotor have several snails 2 and 4 (d) Helical cogging between the spirals (four); the helical flank surfaces of the main rotor and the secondary rotor are mutually. The teeth A a are mutually toothed and milled and 'the main rotor pitch half-phase rotor section ® radius system can be defined as the rotor center distance, where the ratio of the main rotor to the sub-rotor pitch radius is ±7 The ratio of t teeth to thousands of bits is found in the ratio of the main rotor to the sub rotor. The characteristics of the rotor and the rotor face are defined by a 'fhai plane rack' defined by a straight angle φ ω strip defined by the teeth. The circular arc of the majority of the curve is linear -, - normal equidistant trochoidal line, normal quintic tangential line DE, - arc EF, elliptical arc FG line GH, one arc HI and straight line IJe 2 ,:: ° The spiral fluid machine according to item 1 of the patent application scope, the 5th straight plane of the sea tooth is a helix angle with the tooth surface of the rotor shaft. The plane of the main rotor and the end face of the 钊 rotor is defined by The normal tooth rack of the right angle of the tooth is produced, and the cutting is different: the surface can still adopt the advantages of the same-tool, reduce the processing cost and the tool change, the spiral fluid machine described in the patent application scope, 4 methods The curve of the surface rack is the cutting edge line of the rotor hobTherefore, please refer to the spiral fluid machine mentioned in the first paragraph of the patent scope, 'the face w can be regarded as the rotor tooth shape with infinite radius. Generally, the range of 17 1308616 tooth crown c/l is (〇·〇〇 5~〇·〇5)4, and the height of the root of the tooth is in the range of (0.15~0.35Κ' where the high force of the crown can be used to set the indexing amount of the rack, that is, the height of the pitch of the rack. When the (1) is zero and negative, the designed rack will create a single-sided rotor tooth profile with a tooth shape only on the side of the pitch circle. 5. A spiral fluid machine, mainly including: a shell a body having a volume chamber therein for at least one main rotor and at least A pair of rotors are disposed on the towel, and the main rotor and the auxiliary rotor each have a plurality of spiral blades and spiral grooves spaced between the spiral blades, and the spiral faces of the main rotor and the secondary rotor are arbitrarily and parallelly operated. And the radius of the main rotor pitch circle plus the radius of the sub-rotor pitch can be defined as the rotor center distance, wherein 'the ratio of the radius of the main rotor to the pitch radius of the secondary rotor is equal to the ratio of the number of teeth of the main rotor and the sub-rotor; The end face tooth shape of the rotor and the secondary rotor is generated by an indexable French rack defined on the straight plane of the tooth, and the normal rack is composed of a plurality of curves connected by sliding, each of which is in the method (4) The external parameter of the strip is called "), less = less (4), including: - arc 'ΑΒ straight line %, - normal equidistant trochoidal CD, one normal equidistant trochoidal line DE, one arc EF, an elliptical arc F, a '' and a straight line... a straight line GH, an arc m 6 · a spiral type fluid machine as described in claim 5, >, a range of curvature radius of the arc For 〇U times + from the heart distance 'this arc is used to generate the high side of the main (sub) rotor The root shape has a rounded curve to facilitate oil enthalpy generation and reduce noise. 18 1308616 : 'The elliptical arc FG is used to create the low-pressure side flank of the main (sub) rotor, :: radius π for adjustment 1 is 0 5~2_〇 times the rotor center distance, so that the arc EF and the straight line GH of the two ends of the F and G have a better tooth shape and a full elasticity. The spiral fluid machine described in item 5 of the patent scope of the patent, the Fenhaihai straight line GH is used to generate the low-voltage side involute of the main (sub) rotor: shape, the length of the straight line is (MM times the rotor center, distance The straight line and the straight line have an angle W for adjustment, and the range is 10 to 30. It is used to control the pressure angle of the low-pressure side tooth surface of the main and auxiliary rotors at the time of contact, which greatly improves the torque transmission. The spiral fluid machine according to claim 5, wherein the radius φ of the arc HI ranges from 〇〇〇5 to 〇15 times the rotor. The distance is used to generate the main (sub) rotor. The low-pressure side root (top) makes the tooth shape have a rounded curve to facilitate oil film formation and reduce noise. 14·Spiral fluid machine as described in claim 5, ', medium 4 straight IJ parallel axis, height For the crown height d 1, the length of the straight line ranges from 0 to (M times the rotor center m adjusts the secondary rotor blade: thick, can generate a strong secondary rotor to reasonably distribute the torque when the primary and secondary rotors are running' to avoid the secondary rotor teeth The deformation of the leaves is too large. 20