CN208010590U - Screw compressor rotor structure and variable-frequency screw compressor with same - Google Patents
Screw compressor rotor structure and variable-frequency screw compressor with same Download PDFInfo
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- CN208010590U CN208010590U CN201820226235.6U CN201820226235U CN208010590U CN 208010590 U CN208010590 U CN 208010590U CN 201820226235 U CN201820226235 U CN 201820226235U CN 208010590 U CN208010590 U CN 208010590U
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Abstract
The utility model provides a helical-lobe compressor rotor structure and have its frequency conversion helical-lobe compressor. The rotor structure of the screw compressor comprises a female rotor, the female rotor comprises a female rotor body, a plurality of female tooth parts are arranged on the female rotor body, a tooth-shaped molded line is formed between tooth tops of two adjacent female tooth parts on the end surface of the female rotor body, and the tooth-shaped molded line sequentially consists of an arc line segment a along the anticlockwise direction1b. Envelope bc, arc cd, de, ea2Arc segment a2a3The arc line segments cd and de are connected end to end, and the circle centers of the arc line segments cd and de are positioned on two sides of the tooth-shaped molded line. Therefore, the tooth-shaped molded line can be effectively optimized, the molded line of the tooth part is more reasonable to set, and the rotating speed of the rotor structure is reduced under the same flow. Particularly, in the variable frequency screw compressor, the molded line of the rotor structure can be suitable for the variable frequency screw compressor, the leakage amount of the compressor is effectively reduced, and the compression efficiency and the applicability of the variable frequency screw compressor are improved.
Description
Technical field
The utility model is related to compressor apparatus technical fields, in particular to a kind of rotor of helical lobe compressor structure
And the inverter screw compressor with it.
Background technology
In the prior art, the compression performance for determining frequency helical-lobe compressor is limited, causes to determine frequency helical-lobe compressor narrow application range
The problem of, determine frequency helical-lobe compressor for existing, there is a set of molded line optimized, but corresponding frequency-changeable compressor and
Speech, since rotating speed is to change so that directly this is used to determine the rotor teeth portion molded line of frequency helical-lobe compressor, be easy to cause and determine frequency pressure
The problem of compression performance of contracting machine declines.
Further, due to the rotor in the prior art for whether determining frequency helical-lobe compressor or inverter screw compressor
The molded line setting of structure is unreasonable, causes compressor big problem of coolant leakage amount in compression process.
Utility model content
The main purpose of the utility model is to provide a kind of rotor of helical lobe compressor structure and with its frequency conversion screw
Compressor, to solve the problems, such as that helical-lobe compressor leakage rate is big in the prior art.
To achieve the goals above, one side according to the present utility model provides a kind of rotor of helical lobe compressor knot
Structure, including：Female rotor, female rotor include female rotor body, and multiple cloudy teeth portion are provided in female rotor body, female rotor body
Tooth-shaped molded line is formed between the tooth top of two neighboring cloudy teeth portion on end face, tooth-shaped molded line is in the counterclockwise direction successively by arc segment
a1B, envelope bc, arc segment cd, arc segment de, arc segment ea2, arc segment a2a3Head and the tail connection is formed, wherein arc segment cd
It is located at the both sides of tooth-shaped molded line with the center of circle of arc segment de.
Further, the parametric equation of arc segment cd is：Its
In, R2tFor female rotor pitch radius；The adjusting parameter of distance between the center of circle and the tooth root of male rotor that Δ R is arc segment cd；R3
For the height of teeth portion；T is point and the geometric center of female rotor body and the geometric center of male rotor on the tooth-shaped molded line of part
Line formed angle；t1For the central angle of arc segment cd.
Further, the parametric equation of arc segment de is：
Wherein, R8For center of arc's parameter of arc segment de；R4For the radius of arc segment de；t2Extremely for the point on the end of arc segment cd
The line in the center of circle of arc segment cd, the folder formed with the line of the geometric center of the geometric center and male rotor of female rotor body
Angle；t5For the central angle of arc segment de；t8For the central angle of arc segment cd.
Further, arc segment ea2Parametric equation be：
Wherein, R5For arc segment ea2Radius；t3
For arc segment ea2End on point to female rotor body geometric center line, with the geometric center of female rotor body with
The angle that the line of the geometric center of male rotor is formed；t9For arc segment ea2Central angle.
Further, arc segment a2a3Parametric equation be：Wherein, t0For camber line
Section ea2End and female rotor body geometric center line, with the geometric center of female rotor body and the geometry of male rotor
The angle that the line at center is formed.
Further, arc segment a1The parametric equation of b is：
Wherein, R7For arc segment a1The radius of b；t4For arc segment a1The company of the geometric center of point and female rotor body on the head end of b
Line, the angle formed with the line of the geometric center of the geometric center and male rotor of female rotor body.
Further, the parametric equation of envelope bc is：
Wherein, R1tFor male rotor pitch circle half
Diameter；R6For the radius of the arc segment of formation envelope bc；K=i+1, i are the gear ratio of the number of teeth and male rotor of female rotor；For
The corner of male rotor；A is the centre-to-centre spacing of female rotor and male rotor.
Further, rotor of helical lobe compressor structure further includes：Male rotor, the teeth portion of male rotor and the teeth portion phase of female rotor
Engagement.
Further, when cloudy teeth portion is engaged with the teeth portion of male rotor, the center of circle of the arc segment cd of the moon teeth portion is located at the moon
On the line of the geometric center of rotor and the geometric center of male rotor.
Further, when cloudy teeth portion is engaged with the teeth portion of male rotor, the geometry in the center of circle of arc segment cd to rotor body
Center is less than the center of circle of arc segment de to the geometric center and sun of rotor body at a distance from the line of the geometric center of male rotor
The distance of the line of the geometric center of rotor.
Further, the area utilization factor of male rotor and female rotor is Q, wherein 0.429≤Q.
Another aspect according to the present utility model provides a kind of inverter screw compressor, including rotor of helical lobe compressor
Structure, rotor of helical lobe compressor structure are above-mentioned rotor of helical lobe compressor structure.
Using the technical solution of the utility model, between the tooth top of the two neighboring cloudy teeth portion on the end face of female rotor body
Tooth-shaped molded line is formed, tooth-shaped molded line is in the counterclockwise direction successively by arc segment a1B, envelope bc, arc segment cd, arc segment de,
Arc segment ea2, arc segment a2a3Head and the tail connection is formed, wherein is arranged to the center of circle of arc segment cd and arc segment de to be located at tooth form
The both sides of molded line.Setting can effectively optimize the tooth-shaped molded line in this way so that the opening of teeth portion molded line is more than the prior art
The pressure difference of the opening of the teeth portion molded line of middle rotor structure, the internal environment and external environment that then reduce rotor structure changes
Amount, to reach reduce refrigerant from rotor structure internal leakage the problem of.Using the rotor structure so that the molded line of teeth portion is arranged
More rationally so that the rotating speed of the rotor structure is reduced under identical flow.Especially there is the rotor structure frequency conversion spiral shell
Bar compressor so that the molded line of the rotor structure can be suitable for inverter screw compressor, significantly reduce the compressor
Leakage rate, to improve the compression efficiency and applicability of the inverter screw compressor.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
In the accompanying drawings：
Fig. 1 shows the structural schematic diagram of the embodiment of rotor structure embodiment according to the present utility model；
Fig. 2 shows the structural schematic diagrams of the embodiment one of the tooth-shaped molded line of rotor structure according to the present utility model；
Fig. 3 shows the structural schematic diagram of the embodiment two of the tooth-shaped molded line of rotor structure according to the present utility model.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, female rotor body；11, cloudy teeth portion；20, male rotor；21, positive teeth portion.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
It should be noted that term " first ", " second " etc. in the description and claims of this application and attached drawing
It is for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that the art used in this way
Language can be interchanged in the appropriate case, so that presently filed embodiment described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment need not limit
In those of clearly listing step or unit, but may include not listing clearly or for these processes, method, production
The intrinsic other steps of product or equipment or unit.
For ease of description, herein can with use space relative terms, as " ... on ", " in ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (be rotated by 90 ° or be in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary
Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be understood that thesing embodiments are provided so that disclosure herein is thoroughly and complete, and these are shown
The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand
The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them
It states.
Embodiment according to the present utility model provides a kind of rotor of helical lobe compressor structure.
Specifically, as depicted in figs. 1 and 2, which includes female rotor.Female rotor includes female rotor
Ontology 10.Multiple cloudy teeth portion 11 are provided in female rotor body 10, the two neighboring cloudy teeth portion on the end face of female rotor body 10
Tooth-shaped molded line is formed between 11 tooth top, tooth-shaped molded line is in the counterclockwise direction successively by arc segment a1B, envelope bc, arc segment
Cd, arc segment de, arc segment ea2, arc segment a2a3Head and the tail connection is formed.Wherein, the center of circle of arc segment cd and arc segment de are located at
The both sides of tooth-shaped molded line.
In the present embodiment, setting can effectively optimize the tooth-shaped molded line in this way so that the opening of teeth portion molded line is big
In the opening of the teeth portion molded line of rotor structure in the prior art, the internal environment and external environment of rotor structure are then reduced
Pressure difference variable quantity, to reach reduce refrigerant from rotor structure internal leakage the problem of.Using the rotor structure so that teeth portion
Molded line setting is more reasonable so that the rotating speed of the rotor structure is reduced under identical flow.Especially there is the rotor knot
Structure inverter screw compressor so that the molded line of the rotor structure can be suitable for inverter screw compressor, significantly reduce this
The leakage rate of compressor, to improve the compression efficiency and applicability of the inverter screw compressor.
In the present embodiment, rotor structure includes female rotor and male rotor, and the molded line feature of female rotor is provided in the application,
The molded line feature of male rotor can uniquely be found out according to female rotor, and the Profile Design of rotor usually first provides female rotor or sun
The molded line of rotor finds out the molded line of another rotor then according to the envelope principle of molded line.
As shown in Figure 1, using the geometric center of female rotor body 10 as origin, with the geometric center of female rotor body 10 with
Straight line where the line of the geometric center of male rotor is horizontal axis, with perpendicular to the geometric center and male rotor of female rotor body 10
The line of geometric center be that the longitudinal axis establishes rectangular coordinate system, wherein the parametric equation of arc segment cd is：
Wherein, R2tFor female rotor pitch radius；Δ R is camber line
The adjusting parameter of distance, R between the center of circle and the tooth root of male rotor of section cd3For the height of teeth portion 11, t is the tooth-shaped molded line of part
On point and female rotor body 10 geometric center and male rotor geometric center the angle that is formed of line, t1For arc segment cd
Central angle.
The parametric equation of arc segment de is：
Wherein, R8Join for the center of arc of arc segment de
Number, R4For the radius of arc segment de, t2For the line of the point on the end of arc segment cd to the center of circle of arc segment cd, with female rotor
The angle that the line of the geometric center of ontology 10 and the geometric center of male rotor is formed, t5For the central angle of arc segment de, t8For arc
The central angle of line segment cd.
Further, arc segment ea2Parametric equation be：
Wherein, R5For arc segment ea2Radius, t3
For arc segment ea2End on point to female rotor body 10 geometric center line, and in the geometry of female rotor body 10
The angle that the line of the geometric center of the heart and male rotor is formed, t9For arc segment ea2Central angle.
Arc segment a2a3Parametric equation be：Wherein, t0For arc segment ea2End
The line at end and the geometric center of female rotor body 10, with the geometric center of the geometric center and male rotor of female rotor body 10
The angle that line is formed.
Arc segment a1The parametric equation of b is：Wherein, R7
For arc segment a1The radius of b, t4For arc segment a1The line of point and the geometric center of female rotor body 10 on the head end of b, with the moon
The angle that the line of the geometric center of rotor body 10 and the geometric center of male rotor is formed.
The parametric equation of envelope bc is：
Wherein, R1tFor male rotor pitch circle half
Diameter, R6For the radius of the arc segment of formation envelope bc, k=i+1, i are the gear ratio of the number of teeth and male rotor of female rotor,For
The corner of male rotor, A are the centre-to-centre spacing of female rotor and male rotor.The female rotor of the rotor structure coordinates with male rotor intermeshing
Realize compression operation.
Specifically, when cloudy teeth portion 11 is engaged with the teeth portion of male rotor, the center of circle of the arc segment cd of the moon teeth portion 11 is located at
On the line of the geometric center of female rotor and the geometric center of male rotor.In the center of circle of arc segment cd to the geometry of rotor body 10
The heart is less than the center of circle of arc segment de to the geometric center and sun of rotor body 10 at a distance from the line of the geometric center of male rotor
The distance of the line of the geometric center of rotor.Wherein, the projection lines of arc segment cd and arc segment de on longitudinal axis are non-intersecting.Using
The rotor structure of the structure so that the area utilization factor Q of male rotor and female rotor is：0.429≤Q.
As shown in figure 3, in the present embodiment, the cloudy teeth portion on female rotor can be arranged to six, i.e., the female rotor has
Six teeth portion molded line, the parametric equation all same of each curve, the i.e. starting such as anticlockwise Article 2 molded line in Fig. 3
Point a3 on end is equivalent to the point a1 on the initiating terminal for being disposed below first molded line, and the junction of each arc segment is smooth
Excessively.
The area utilization factor of male rotor and female rotor can be effectively improved using the rotor structure, to effectively
Improve the practicability and reliability of the rotor structure.
Rotor of helical lobe compressor structure in above-described embodiment can be also used for frequency conversion compression device technical field, i.e. basis
The another aspect of the utility model provides a kind of inverter screw compressor.The inverter screw compressor includes helical-lobe compressor
Rotor structure, rotor of helical lobe compressor structure are above-mentioned rotor of helical lobe compressor structure.
Following technique effect can be obtained using the rotor compressor of the structure：
| Male rotor area/mm2 | Female rotor area/mm2 | Area utilization factor | Vent ports area/m2 | |
| The prior art | 1562.33 | 1450.88 | 0.429 | 0.0025 |
| The application | 1672.75 | 1594.94 | 0.4874 | 0.0027 |
Under identical rotor size, since the area utilization factor of the molded line is larger, so its every turn is primary, discharge
Theoretical displacement is larger.So to reach identical capacity, the rotor speed of the tooth-shaped molded line in the application can reduce.Rotating speed
Oily loss is hit in the friction loss and suction and discharge that reducing helps to reduce between rotor, to improve efficiency.
Still further aspect, under the high rotating speed of frequency conversion, the extraction flow of compressor is bigger.This when, vent ports
Size, the influence to the pressure loss of exhaust (for determining frequency helical-lobe compressor, since extraction flow is smaller, are vented with regard to very big
The pressure loss caused by the size in aperture is not to influence the principal element of efficiency).Using the tooth-shaped molded line rotor structure so that
The vent ports area of the rotor structure is larger, contributes to the pressure at expulsion loss for reducing compressor, so as to improve compression
Function is imitated.
Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation
Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary
Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description
Apply example.Furthermore, it is understood that when describing a specific features, structure or feature in conjunction with any embodiment, what is advocated is knot
Other embodiment is closed to realize that this feature, structure or feature are also fallen in the scope of the utility model.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiment.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (12)
1. a kind of rotor of helical lobe compressor structure, which is characterized in that including：
Female rotor, female rotor include female rotor body (10), and multiple cloudy teeth portion (11) are provided on the female rotor body (10),
Tooth-shaped molded line is formed between the tooth top of the two neighboring cloudy teeth portion (11) on the end face of the female rotor body (10), it is described
Tooth-shaped molded line is in the counterclockwise direction successively by arc segment a1B, envelope bc, arc segment cd, arc segment de, arc segment ea2, camber line
Section a2a3Head and the tail connection is formed, wherein the center of circle of arc segment cd and arc segment de are located at the both sides of the tooth-shaped molded line.
2. rotor of helical lobe compressor structure according to claim 1, which is characterized in that the parametric equation of arc segment cd is：
Wherein, R2tFor female rotor pitch radius；
The adjusting parameter of distance between the center of circle and the tooth root of male rotor that Δ R is arc segment cd；
R3For the height of the teeth portion (11)；
T is the several of geometric center and the male rotor of point and the female rotor body (10) on the tooth-shaped molded line of part
The angle that the line at what center is formed；
t1For the central angle of arc segment cd.
3. rotor of helical lobe compressor structure according to claim 2, which is characterized in that the parametric equation of arc segment de is：
Wherein, R8For center of arc's parameter of arc segment de；
R4For the radius of arc segment de；
t2For the line of the point on the end of arc segment cd to the center of circle of arc segment cd, the geometry with the female rotor body (10)
The angle that the line of center and the geometric center of the male rotor is formed；
t5For the central angle of arc segment de；
t8For the central angle of arc segment cd.
4. rotor of helical lobe compressor structure according to claim 3, which is characterized in that arc segment ea2Parametric equation be：
Wherein, R5For arc segment ea2Radius；
t3For arc segment ea2End on point to the female rotor body (10) geometric center line, with the female rotor
The angle that the line of the geometric center of ontology (10) and the geometric center of the male rotor is formed；
t9For arc segment ea2Central angle.
5. rotor of helical lobe compressor structure according to claim 4, which is characterized in that arc segment a2a3Parametric equation be：
Wherein, t0For arc segment ea2End and the female rotor body (10) geometric center line, with the female rotor
The angle that the line of the geometric center of ontology (10) and the geometric center of the male rotor is formed.
6. rotor of helical lobe compressor structure according to claim 5, which is characterized in that arc segment a1The parametric equation of b is：
Wherein, R7For arc segment a1The radius of b；
t4For arc segment a1The line of point and the geometric center of the female rotor body (10) on the head end of b, with the female rotor
The angle that the line of the geometric center of ontology (10) and the geometric center of the male rotor is formed.
7. rotor of helical lobe compressor structure according to claim 6, which is characterized in that the parametric equation of envelope bc is：
Wherein, R1tFor male rotor pitch radius；
R6For the radius of the arc segment of formation envelope bc；
K=i+1, i are the gear ratio of the number of teeth and male rotor of female rotor；
For the corner of male rotor；
A is the centre-to-centre spacing of female rotor and male rotor.
8. rotor of helical lobe compressor structure according to claim 1, which is characterized in that the rotor of helical lobe compressor structure
Further include：
Male rotor, the teeth portion of the male rotor are meshed with the teeth portion of the female rotor.
9. rotor of helical lobe compressor structure according to claim 8, which is characterized in that when the cloudy teeth portion (11) with it is described
When the teeth portion engagement of male rotor, the center of circle of the arc segment cd of the cloudy teeth portion (11) be located at the female rotor geometric center and
On the line of the geometric center of the male rotor.
10. rotor of helical lobe compressor structure according to claim 8 or claim 9, which is characterized in that when the cloudy teeth portion (11) with
When the teeth portion engagement of the male rotor, geometric center and the male rotor in the center of circle of arc segment cd to the rotor body (10)
Geometric center line distance, geometric center and the sun in the center of circle less than arc segment de to the rotor body (10)
The distance of the line of the geometric center of rotor.
11. rotor of helical lobe compressor structure according to claim 8, which is characterized in that the male rotor and described the moon turn
The area utilization factor of son is Q, wherein 0.429≤Q.
12. a kind of inverter screw compressor, including rotor of helical lobe compressor structure, which is characterized in that rotor of helical lobe compressor knot
Structure is the rotor of helical lobe compressor structure described in any one of claim 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820226235.6U CN208010590U (en) | 2018-02-08 | 2018-02-08 | Screw compressor rotor structure and variable-frequency screw compressor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820226235.6U CN208010590U (en) | 2018-02-08 | 2018-02-08 | Screw compressor rotor structure and variable-frequency screw compressor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208010590U true CN208010590U (en) | 2018-10-26 |
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ID=63886212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820226235.6U Withdrawn - After Issue CN208010590U (en) | 2018-02-08 | 2018-02-08 | Screw compressor rotor structure and variable-frequency screw compressor with same |
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| CN (1) | CN208010590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278208A (en) * | 2018-02-08 | 2018-07-13 | 珠海格力电器股份有限公司 | Screw compressor rotor structure and variable-frequency screw compressor with same |
-
2018
- 2018-02-08 CN CN201820226235.6U patent/CN208010590U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278208A (en) * | 2018-02-08 | 2018-07-13 | 珠海格力电器股份有限公司 | Screw compressor rotor structure and variable-frequency screw compressor with same |
| CN108278208B (en) * | 2018-02-08 | 2024-03-08 | 珠海格力电器股份有限公司 | Screw compressor rotor structure and variable frequency screw compressor with same |
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