CN206988120U - Helical-lobe compressor - Google Patents
Helical-lobe compressor Download PDFInfo
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- CN206988120U CN206988120U CN201720707235.3U CN201720707235U CN206988120U CN 206988120 U CN206988120 U CN 206988120U CN 201720707235 U CN201720707235 U CN 201720707235U CN 206988120 U CN206988120 U CN 206988120U
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- helical
- slide valve
- valve lever
- collar
- lobe compressor
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Abstract
The utility model discloses a kind of helical-lobe compressor, it is related to compressor field, to optimize the structure of existing helical-lobe compressor, reduces the probability that the guiding valve of helical-lobe compressor is scratched and prevent slide valve lever to be stuck.The helical-lobe compressor includes slide valve lever and support base, and slide valve lever is supported in the piston chamber of helical-lobe compressor by support base, and the penetration hardness of slide valve lever is higher than the penetration hardness of the supporting surface being engaged with slide valve lever of support base.Above-mentioned technical proposal, because the material of mating surface between slide valve lever and support base is different, the material hardness of support base is less than the material hardness of slide valve lever, therefore can be by the gap setting between slide valve lever and support base enough to small, even if slide valve lever encounters support base, slide valve lever will not also be stuck, and the oscillating quantity of slide valve lever is small, and then make it that the oscillating quantity of guiding valve is small.
Description
Technical field
It the utility model is related to compressor field, and in particular to a kind of helical-lobe compressor.
Background technology
Helical-lobe compressor is the important component of business air conditioner Screw chiller, is referred to as " heart " of business air conditioner.
Guiding valve is the strength member of compressor, and back and forth movement is done inside compressor to adjust the performance load of compressor.The fortune of guiding valve
Dynamic is by pulling slide valve lever to drive, and guiding valve and slide valve lever are assembled together referred to as slide valve assembly.At present, limited using boss
The oscillating quantity of slide valve assembly processed, specifically, slide valve lever pass through boss, between the two with gap.
The size in gap directly affects the efficiency of compressor between guiding valve cambered surface and rotor, and gap is smaller, and efficiency is higher.
In the helical-lobe compressor course of work, guiding valve is larger due to having between slide valve lever and boss by the upward lift power of compressed gas
Gap, guiding valve oscillating quantity is big, so abrasive phenomenon often occurs in guiding valve.
Inventor has found, following problems in the prior art at least be present：Guiding valve is often scratched in the course of the work；If but
Reduce the oscillating quantity of guiding valve reducing between boss and slide valve assembly by way of gap, can cause slide valve lever worked again
Easily it is stuck in journey, have impact on the normal work of helical-lobe compressor.
Utility model content
One of purpose of the present utility model is to propose a kind of helical-lobe compressor, to optimize existing helical-lobe compressor
Structure, reduce the probability that the guiding valve of helical-lobe compressor is scratched and prevent slide valve lever to be stuck.
To achieve the above object, the utility model provides following technical scheme：
The utility model provides a kind of helical-lobe compressor, including slide valve lever and support base, and the slide valve lever is by the branch
Seat supports are supportted in the piston chamber of the helical-lobe compressor, the penetration hardness of the slide valve lever higher than the support base with it is described
The penetration hardness for the supporting surface that slide valve lever is engaged.
In an alternate embodiment of the invention, the support base includes boss and the collar, and the collar is installed on the boss, described
For slide valve lever through the collar and matched, the hardness of the slide valve lever is higher than the hardness of the collar.
In an alternate embodiment of the invention, the internal diameter of the collar is bigger 0.01mm-0.02mm than the external diameter of the slide valve lever.
In an alternate embodiment of the invention, the material of the collar is selected from copper and polymeric material.
In an alternate embodiment of the invention, the boss, which is provided with, prevents the set ring from being engaged away from the rotor of helical lobe compressor
First position limiting structure of portion's axial movement.
In an alternate embodiment of the invention, first position limiting structure includes radially inwardly projecting part, and the first of the collar
End face contacts with the radially inwardly projecting part.
In an alternate embodiment of the invention, the radially inwardly projecting part is annular either other than ring type.
In an alternate embodiment of the invention, the boss is installed on bearing block, the bearing block be provided with prevent the collar towards
Second position limiting structure of the rotor of helical lobe compressor engaging piece axial movement.
In an alternate embodiment of the invention, second position limiting structure includes annular element, the end face of the annular element and the set
The second end face contact of ring.
In an alternate embodiment of the invention, second position limiting structure includes other than ring type projection, the raised end face of the other than ring type
Contacted with the second end face of the collar.
In an alternate embodiment of the invention, the boss and collar interference fit.
Based on above-mentioned technical proposal, the utility model embodiment can at least produce following technique effect：
Above-mentioned technical proposal, because the material of mating surface between slide valve lever and support base is different, the material hardness of support base
Less than the material hardness of slide valve lever, therefore can be by the gap setting between slide valve lever and support base enough to small, even if slide valve lever touches
To support base, slide valve lever will not also be stuck, and the oscillating quantity of slide valve lever is small, and then make it that the oscillating quantity of guiding valve is small.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not form to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the helical-lobe compressor dimensional structure diagram that the utility model embodiment provides；
Fig. 2 is the helical-lobe compressor cross section structure diagram that the utility model embodiment provides；
Fig. 3 is Fig. 2 B close-up schematic views；
Fig. 4 is guiding valve dimensional structure diagram in Fig. 1；
Fig. 5 is the helical-lobe compressor clamping support schematic diagram that the utility model embodiment provides；
Fig. 6 is Fig. 5 cross section structure diagram.
Reference：
1st, slide valve lever；2nd, support base；3rd, bearing block；4th, guiding valve；5th, screw；21st, boss；22nd, the collar；211st, first is spacing
Structure；221st, first end face；222nd, second end face.
Embodiment
Technical scheme provided by the utility model is illustrated in more detail with reference to Fig. 1~Fig. 6.
Referring to Fig. 1 to Fig. 3, the utility model embodiment provides a kind of helical-lobe compressor, including slide valve lever 1 and support base 2,
Slide valve lever 1 is supported in the piston chamber of helical-lobe compressor by support base 2, and the penetration hardness of slide valve lever 1 is higher than support base 2 and cunning
The penetration hardness for the supporting surface that valve rod 1 is engaged.
Support base 2 has the supporting surface of support slide valve lever 1, and the material hardness of the supporting surface and the material of slide valve lever 1 are hard
Degree is different, and the material hardness of support base 2 is less than the material hardness of slide valve lever 1.
Alternatively, 2 overall material selection of support base is than in the low material of the hardness of slide valve lever 1, or support base 2 and slide valve lever
The part of 1 contact is less than the material of slide valve lever 1 using hardness.In the present embodiment by taking the latter as an example.
Because the material of mating surface between slide valve lever 1 and support base 2 is different, the material hardness of support base 2 is less than slide valve lever 1
Material hardness, therefore can be by the gap setting between slide valve lever 1 and support base 2 enough to small, even if slide valve lever 1 encounters support base
2, slide valve lever 1 also will not be stuck.
Referring to Fig. 1 to Fig. 3, support base 2 includes boss 21 and the collar 22, and the collar 22 is installed on boss 21, and slide valve lever 1 passes through
The collar 22 is simultaneously matched, and the hardness of the collar 22 is less than the hardness of slide valve lever 1.
The hardness of the collar 22 is less than the hardness of slide valve lever 1, and the collar 22 is softer than slide valve lever 1, even if both contacts, the collar 22
Will not stuck slide valve lever 1, this ensures that the normal work of slide valve lever 1.In assembling, consider that slide valve lever 1 is casting, so
Using Assembly part of the softer collar 22 of quality as slide valve lever 1, slide valve lever 1 is prevented to be stuck.Due to the collar 22 and guiding valve
The gap of bar 1 is smaller, thus guiding valve 4 in back and forth movement by the constraint of slide valve lever 1, guiding valve 4 is hardly upper to be lifted, therefore guiding valve 4
Scratch rate it is relatively low.
Referring to Fig. 3 and Fig. 5, boss 21 and the collar 22 are assembled together referred to as support base 2, and support base 2 is used to limit cunning
The oscillating quantity of valve rod 1.Support base 2 is fixed on bearing block 3 by screw 5, in trial assembly, first should not fixing screws 5, prevent from covering
Ring 22 and slide valve lever 1 are stuck.The collar 22 and the gap of slide valve lever 1 are smaller, first pull slide valve lever 1, under round promotion is several, then fasten spiral shell
Nail 5.
It can be seen that above-mentioned technical proposal, is provided with the collar 22, the hardness of the collar 22 is than sliding between boss 21 and slide valve lever 1
The hardness of valve rod 1 is small, therefore the gap between the collar 22 and slide valve lever 1 can set and will not be also stuck enough to small slide valve lever 1.
The small energy in gap between the collar 22 and slide valve lever 1 make it that the oscillating quantity of slide valve lever 1 is small, and then make it that the oscillating quantity of guiding valve 4 is small, therefore
Limit and lifted on guiding valve 4.
Referring to Fig. 5, in the present embodiment, boss 21 and the collar 22 are interference fitted.Specifically, it is convex using heating between the two
The mode of platform 21 is assembled.
Referring to Fig. 3 and Fig. 6, boss 21 and the collar 22 are coaxial.The fitting surface roughness requirements of boss 21 and the collar 22 are higher,
And there is depth of parallelism requirement, to ensure that the collar 22 and boss 21 have preferable axiality.
The material of the collar 22 has a variety of, for example can be copper, or be polymeric material.Polymeric material such as polychlorostyrene second
The quality such as alkene, polyester resin are softer, and are not easy the material being worn.
Alternatively, in the present embodiment, the internal diameter of the collar 22 is bigger 0.01mm-0.02mm than the external diameter of slide valve lever 1, the scope
The gap between slide valve lever 1 and the collar 22 is corresponded to.
Furthermore, it is contemplated that guiding valve 4, in back and forth movement, the collar 22 is had axial movement by the axial force of slide valve lever 1
Trend, in order to prevent the collar 22 from having axial displacement, the settable position limiting structure on bearing block 3 and boss 21, to constrain the collar
22。
Referring to Fig. 3 and Fig. 6, for right side (i.e. remote screw rod pressure in preventing the collar 22 from occurring in the course of the work towards Fig. 3
The direction of contracting machine rotor engaging piece) move axially, boss 21 is provided with the first position limiting structure 211.
Alternatively, the first position limiting structure 211 includes radially inwardly projecting part, first end face 221 and the radial direction of the collar 22
Inwardly projecting part contact.Radially inwardly projecting part can be integral with boss 21 or be fixedly linked, the present embodiment with
Exemplified by the former.
First position limiting structure 211 can be loop configuration, as shown in Figure 6.Or first position limiting structure 211 be other than ring type
, it may include two or more, and each first position limiting structure 211 is arranged at intervals, and plays the limitation collar 22 jointly and moves axially
Effect.If the non-circular structure of the first position limiting structure 211 is sufficiently large, for example is half or more than half annulus, also can only set
Put the first position limiting structure 211 of an other than ring type.
Referring to Fig. 3 and Fig. 6, for left side (i.e. close screw rod pressure in preventing the collar 22 from occurring in the course of the work towards Fig. 3
The direction of contracting machine rotor engaging piece) move axially, bearing block 3 is provided with the second position limiting structure (not shown).Wherein, boss 21 is logical
Bolt is crossed on bearing block 3.
Specifically, the second position limiting structure includes annular element, and the end face of annular element contacts with the second end face 222 of the collar 22.
Annular element supporting surface is big, and once mounting can be achieved with it is spacing to the circle of the second end face 222 of the collar 22.
Or second position limiting structure be alternatively other than ring type projection, the raised end face of other than ring type and the second end face of the collar 22
222 contacts.It is jointly spacing to the second end face 222 of the collar 22 that multiple other than ring type projections can be set, multiple other than ring type projections are to set
The multiple spot that ring 22 forms interval is spacing.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown is only for ease of description the utility model and simplifies description, rather than indicates or infer meaning
Device or element must have specific orientation, be specific azimuth configuration and operation, thus it is not intended that to this practicality newly
Type protects the limitation of content.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement, but these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (11)
1. a kind of helical-lobe compressor, it is characterised in that including slide valve lever (1) and support base (2), the slide valve lever (1) is by described
Support base (2) is supported in the piston chamber of the helical-lobe compressor, and the penetration hardness of the slide valve lever (1) is higher than the support base
(2) penetration hardness of the supporting surface being engaged with the slide valve lever (1).
2. helical-lobe compressor according to claim 1, it is characterised in that the support base (2) includes boss (21) and set
Ring (22), the collar (22) are installed on the boss (21), and the slide valve lever (1) is through the collar (22) and matches somebody with somebody therewith
Close, the hardness of the slide valve lever (1) is higher than the hardness of the collar (22).
3. helical-lobe compressor according to claim 2, it is characterised in that the internal diameter of the collar (22) is than the slide valve lever
(1) the big 0.01mm-0.02mm of external diameter.
4. helical-lobe compressor according to claim 2, it is characterised in that the material of the collar (22) is selected from copper and polymerization
Thing material.
5. according to any described helical-lobe compressors of claim 2-4, it is characterised in that the boss (21) is described provided with preventing
First position limiting structure (211) of the collar (22) to remote rotor of helical lobe compressor engaging piece axial movement.
6. helical-lobe compressor according to claim 5, it is characterised in that first position limiting structure (211) is included radially
Inwardly projecting part, the first end face (221) of the collar (22) contact with the radially inwardly projecting part.
7. helical-lobe compressor according to claim 6, it is characterised in that the radially inwardly projecting part be annular or
Person is other than ring type.
8. according to any described helical-lobe compressors of claim 2-4, it is characterised in that the boss (21) is installed on bearing block
(3), the bearing block (3) is provided with prevent the collar (22) from being moved axially towards the rotor of helical lobe compressor engaging piece the
Two position limiting structures.
9. helical-lobe compressor according to claim 8, it is characterised in that second position limiting structure includes annular element, institute
The end face of annular element is stated to contact with the second end face (222) of the collar (22).
10. helical-lobe compressor according to claim 8, it is characterised in that it is convex that second position limiting structure includes other than ring type
Rise, the raised end face of the other than ring type contacts with the second end face (222) of the collar (22).
11. helical-lobe compressor according to claim 2, it is characterised in that the boss (21) and the collar (22) mistake
It is full of cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720707235.3U CN206988120U (en) | 2017-06-16 | 2017-06-16 | Helical-lobe compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720707235.3U CN206988120U (en) | 2017-06-16 | 2017-06-16 | Helical-lobe compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206988120U true CN206988120U (en) | 2018-02-09 |
Family
ID=61396723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720707235.3U Active CN206988120U (en) | 2017-06-16 | 2017-06-16 | Helical-lobe compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206988120U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013465A (en) * | 2017-06-16 | 2017-08-04 | 珠海格力电器股份有限公司 | Helical-lobe compressor |
-
2017
- 2017-06-16 CN CN201720707235.3U patent/CN206988120U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013465A (en) * | 2017-06-16 | 2017-08-04 | 珠海格力电器股份有限公司 | Helical-lobe compressor |
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