CN214944947U - Scroll compressor pump body and scroll compressor - Google Patents
Scroll compressor pump body and scroll compressor Download PDFInfo
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- CN214944947U CN214944947U CN202120803734.9U CN202120803734U CN214944947U CN 214944947 U CN214944947 U CN 214944947U CN 202120803734 U CN202120803734 U CN 202120803734U CN 214944947 U CN214944947 U CN 214944947U
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Abstract
The utility model relates to a scroll compressor pump body and scroll compressor, it includes bearing, fixed scroll pan, movable scroll pan, bent axle; the bearing is provided with a shaft hole in a penetrating way, the fixed scroll disk is detachably fixed on the bearing and encloses to form a working space, and the movable scroll disk is movably arranged in the working space; the crankshaft is movably arranged in the shaft hole in a penetrating mode, the end portion of the crankshaft is fixedly connected with the movable scroll disk, and the crankshaft can drive the movable scroll disk to rotate. The fixed scroll disk is provided with a main exhaust hole and a plurality of auxiliary exhaust hole groups in a penetrating manner, each auxiliary exhaust hole of the auxiliary exhaust hole groups is used for auxiliary exhaust, in addition, the advanced exhaust is realized, the maximum pressure in the refrigerant compression space is reduced, the occurrence of the over-compression phenomenon is avoided, and the problem that the movable scroll disk is easy to incline and leak or even rotate under the low-speed working condition is effectively avoided; effectively improved through above setting scroll compressor stability under the low-speed operating mode, and can effectively improve the compression efficiency under the low-speed operating mode.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to a scroll compressor pump body and scroll compressor.
Background
The scroll compressor pump body comprises a main bearing, a fixed scroll, a movable scroll and a crankshaft, wherein the positioning disc is a fixed involute scroll, the movable scroll is an involute moving scroll which eccentrically revolves and translates, the fixed scroll is detachably fixed on the main bearing and is engaged with the movable scroll to form a refrigerant compression working space which comprises a plurality of crescent-shaped compression cavities; the crankshaft is an eccentric shaft and can drive the movable scroll disk to rotate around the base circle center of the fixed scroll disk in a plane with a small radius. Refrigerant gas is sucked into a compressor pump body from a compressor suction pipe and then is sucked into a refrigerant compression working space formed by the movable scroll and the fixed scroll, along with the rotation of the crankshaft, the refrigerant gas is gradually compressed into high-temperature and high-pressure gas in a plurality of crescent compression cavities, and then the high-temperature and high-pressure gas is continuously discharged from an axial hole of a central part of the fixed scroll.
When the scroll compressor is in operation, compressed gas acts on the movable scroll disk, the movable scroll disk bears axial force and overturning moment, the action effect of the force makes the movable scroll disk separate from the static disk and the end face of the movable scroll disk incline, so that large gas leakage and friction and abrasion between scroll walls of the movable and static disks are caused, the movable scroll disk vibrates to a certain extent, and noise is increased. In order to solve the problems, an intermediate pressure back pressure cavity is arranged on the back surface of the movable scroll disc, and gas in the high pressure cavity is introduced into the back pressure cavity by utilizing the pressure difference between the high pressure cavity and the low pressure cavity so as to balance the axial force of the movable scroll disc and weaken the overturning moment. However, when the scroll compressor is in a low-speed operation condition, because the pressure difference between the high-pressure chamber and the low-pressure chamber is small, the pressure in the refrigerant compression space is greater than the pressure in the back-pressure chamber, so that the movable scroll is prone to tilting and overturning, and further compressed gas is prone to leaking.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a scroll compressor pump body, it has simple structure and stability good, difficult emergence is leaked and the advantage that the compression efficiency is high.
A scroll compressor pump body comprises a bearing, a fixed scroll, a movable scroll, a crankshaft and an exhaust valve; the bearing is provided with a shaft hole in a penetrating way, the fixed scroll disk is detachably fixed on the bearing and encloses to form a working space, and the movable scroll disk is movably arranged in the working space; the crankshaft is movably arranged in the shaft hole in a penetrating way, and the end part of the crankshaft is fixedly connected with the movable scroll disk and can drive the movable scroll disk to rotate;
a fixed scroll wrap is convexly arranged on the inner side of the fixed scroll pan, a movable scroll wrap is convexly arranged on one side of the movable scroll pan facing the fixed scroll pan, and the fixed scroll wrap and the movable scroll wrap are meshed with each other and enclose a plurality of crescent-shaped refrigerant compression spaces; the fixed scroll disk is provided with an exhaust hole in an axial penetrating manner and an air inlet hole in a radial direction, and the exhaust hole and the air inlet hole are communicated with the refrigerant compression space;
the exhaust hole comprises a main exhaust hole and a plurality of auxiliary exhaust hole groups, and the main exhaust hole is positioned in the center of the refrigerant compression space; the auxiliary exhaust hole groups are sequentially arranged outwards from the center of the refrigerant compression space, each auxiliary exhaust hole group comprises a plurality of auxiliary exhaust holes, and each exhaust hole is tangent to the fixed scroll wrap;
one end of the exhaust valve is detachably fixed on the outer side of the fixed scroll and movably covered on the exhaust hole.
The embodiment of the utility model provides a scroll compressor pump body, it is through setting up main exhaust hole and a plurality of auxiliary exhaust hole group in deciding vortex disk department, main exhaust hole is used as main exhaust, each auxiliary exhaust hole of auxiliary exhaust hole group is used for assisting the exhaust, the setting that the auxiliary exhaust hole is located the main exhaust hole outside makes can realize exhausting in advance, has reduced the maximum pressure in the refrigerant compression space, avoids the emergence of over-compression phenomenon, has also effectively avoided scroll compressor in low-speed operating mode in addition the refrigerant compression space the pressure too big and be greater than the pressure in back pressure chamber, leads to moving the vortex disk and easily appears the problem that the slope leaks or even take place to change and cover; effectively improved through above setting scroll compressor stability under the low-speed operating mode, and can effectively improve the compression efficiency under the low-speed operating mode.
Furthermore, the molded line of the fixed scroll wrap is formed by enclosing an inner involute of the fixed scroll and an outer involute of the fixed scroll; assist the exhaust hole group and include first auxiliary exhaust hole group, second in proper order and assist the exhaust hole group, the exhaust hole of first auxiliary exhaust hole group with decide the vortex outside and gradually burst at seams tangent, the exhaust hole group is assisted to the second and the exhaust hole of third auxiliary exhaust hole group with decide the vortex inboard and gradually burst at seams tangent.
Furthermore, the number of the auxiliary exhaust holes in the first auxiliary exhaust hole group and the second auxiliary exhaust hole group is 3, and the number of the auxiliary exhaust holes in the third auxiliary exhaust hole group is 2.
Further, the main exhaust hole and all the auxiliary exhaust holes are through holes without clearance volume so as to realize full exhaust.
Furthermore, the main exhaust hole and all the auxiliary exhaust holes are circular in cross section, and the inner diameter of the main exhaust hole is larger than that of the auxiliary exhaust holes.
Furthermore, the exhaust valve comprises an exhaust valve plate, the exhaust valve plate comprises a fixed end and a plurality of closed ends, the fixed end is fixed on the outer side of the fixed scroll, and each closed end is fixedly connected with the fixed end; the cover closing end comprises a main cover closing end and a plurality of auxiliary cover closing ends, the main cover closing end movable cover is arranged on the main exhaust hole, and each auxiliary cover closing end corresponds to the movable cover and is arranged on the auxiliary exhaust hole.
Further, discharge valve still includes valve block limiting plate and fixing bolt, the valve block limiting plate with the discharge valve block shape phase-match, the valve block limiting plate runs through and has seted up first fixed through hole, the discharge valve block corresponds first fixed through hole position runs through and has seted up second fixed through hole, fixed whirlpool dish outside surface has seted up fixed screw, fixing bolt wears to locate in proper order first fixed through hole second fixed through hole and fixed screw.
Furthermore, the valve block limiting plate faces the protruding locating column arranged on one side of the fixed scroll disc, the position, corresponding to the locating column, of the exhaust valve block penetrates through the valve block locating hole, the outer side surface of the fixed scroll disc is provided with a scroll disc locating hole, and the locating column penetrates through the exhaust valve block locating hole and the scroll disc locating hole.
Furthermore, the number of the positioning columns is at least 2, and the positioning columns are symmetrically arranged on two sides of the first fixing through hole. The setting of reference column makes and uses single fixing bolt to fix, can avoid fixing bolt accident takes place not hard up back the valve block limiting plate and the discharge valve piece takes place to rotate around fixing bolt easily, and then leads to the discharge valve piece can't fully cover the exhaust hole and close, leads to the problem of gas leakage.
Additionally, the embodiment of the utility model provides a scroll compressor is still provided, it includes above the scroll compressor pump body, it has that job stabilization nature is good, and compresses the advantage that the efficiency is high.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a pump body of a scroll compressor according to embodiment 1 of the present invention;
fig. 2 is a schematic view of a fixed scroll disk structure according to embodiment 1 of the present invention;
fig. 3 is a schematic view of a fixed scroll disk structure angle two according to embodiment 1 of the present invention;
fig. 4 is the schematic view of the structure of the exhaust valve plate in embodiment 1 of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1, fig. 1 is a schematic view of a pump body of a scroll compressor according to embodiment 1 of the present invention, and embodiment 1 of the present invention provides a pump body of a scroll compressor, which includes a bearing 1, a fixed scroll 2, a movable scroll 3, a crankshaft 4, and an exhaust valve 5; the bearing 1 is provided with a shaft hole 12 in a penetrating way, the fixed scroll disk 2 is detachably fixed on the bearing 1 and encloses to form a working space, and the movable scroll disk 3 is movably arranged in the working space; the crankshaft 4 is movably arranged in the shaft hole 12, and the end part of the crankshaft is fixedly connected with the movable scroll 3 and can drive the movable scroll 3 to rotate.
A fixed scroll wrap 21 is convexly arranged on the inner side of the fixed scroll 2, a movable scroll wrap 31 is convexly arranged on one side of the movable scroll 3 facing the fixed scroll 2, and the fixed scroll wrap 21 and the movable scroll wrap 31 are mutually meshed and enclose to form a plurality of crescent-shaped refrigerant compression spaces; the fixed scroll disk 2 is provided with an exhaust hole 23 along the axial direction in a penetrating way, and is provided with an air inlet hole 22 along the radial direction, and the exhaust hole and the air inlet hole 22 are communicated with the refrigerant compression space.
Referring to fig. 2-3, fig. 2 is a schematic view of a fixed scroll disk structure angle according to embodiment 1 of the present invention, and fig. 3 is a schematic view of a fixed scroll disk structure angle according to embodiment 1 of the present invention, as shown in the figures, the exhaust holes include a main exhaust hole 24 and a plurality of auxiliary exhaust hole groups, and the main exhaust hole 24 is located at the center of the refrigerant compression space; and a plurality of auxiliary exhaust hole groups are arranged outwards in sequence from the center of the refrigerant compression space, each auxiliary exhaust hole group comprises a plurality of auxiliary exhaust holes, and each exhaust hole is tangent to the fixed scroll wrap 21.
One end of the exhaust valve 5 is detachably fixed on the outer side of the fixed scroll 2 and movably covers the exhaust hole 23.
The utility model discloses embodiment 1 the scroll compressor pump body, it is through in decide whirlpool dish department run through set up main exhaust hole and a plurality of auxiliary exhaust hole group, main exhaust hole is used as main exhaust, each auxiliary exhaust hole of auxiliary exhaust hole group is used for assisting the exhaust, the setting that the auxiliary exhaust hole is located the main exhaust hole outside makes can realize exhausting in advance, has reduced the maximum pressure in the refrigerant compression space, avoids the emergence of over-compression phenomenon, in addition effectively avoided scroll compressor under low-speed operating mode the refrigerant compression space the pressure too big and be greater than the pressure in back pressure chamber, lead to moving the easy problem that the whirlpool dish appears the slope and leak and even takes place to change and cover; effectively improved through above setting scroll compressor stability under the low-speed operating mode, and can effectively improve the compression efficiency under the low-speed operating mode.
Specifically, the molded line of the fixed scroll wrap 21 is formed by enclosing a fixed scroll inner involute a and a fixed scroll outer involute b; the auxiliary exhaust hole group comprises a first auxiliary exhaust hole group 25, a second auxiliary exhaust hole group 26 and a third auxiliary exhaust hole group 27 in sequence, the exhaust hole of the first auxiliary exhaust hole group 25 is tangent to the involute b on the outer side of the fixed scroll, and the exhaust hole of the second auxiliary exhaust hole group 26 and the exhaust hole of the third auxiliary exhaust hole group 27 are tangent to the involute a on the inner side of the fixed scroll.
The number of the auxiliary exhaust holes in the first auxiliary exhaust hole group 25 and the second auxiliary exhaust hole group 26 is 3, and the number of the auxiliary exhaust holes in the third auxiliary exhaust hole group 27 is 2. The main exhaust hole 24 and all the auxiliary exhaust holes are through holes without clearance volume to realize full exhaust, the cross sections of the main exhaust holes are circular, and the inner diameter of the main exhaust hole 24 is larger than that of the auxiliary exhaust holes.
Specifically, the exhaust valve 5 includes an exhaust valve sheet 51, a sheet position limiting plate, and a fixing bolt (not shown). Referring to fig. 4, fig. 4 is a schematic view of a structure of the exhaust valve plate according to embodiment 1 of the present invention, as shown in the figure, the exhaust valve plate 51 includes a fixed end 512 and a plurality of closed ends, the fixed end 512 is fixed at the outer side of the fixed scroll 2, and each closed end is fixedly connected to the fixed end; the covering end comprises a main covering end 513 and a plurality of auxiliary covering ends 514, the main covering end 513 is movably covered on the main exhaust hole 24, and each auxiliary covering end 514 corresponds to a movable cover and is arranged on the auxiliary exhaust hole.
The valve plate limiting plate is matched with the exhaust valve plate 51 in shape, is positioned right above the exhaust valve plate 51, and has one end fixed on the outer side of the fixed scroll 2 and the other end bent towards one side far away from the fixed scroll 2; the valve plate limiting plate penetrates through and is provided with a first fixing through hole, the exhaust valve plate 51 corresponds to the first fixing through hole and penetrates through and is provided with a second fixing through hole 515, the outer side surface of the fixed scroll disk 2 is provided with a fixing screw hole 28, and the fixing bolt sequentially penetrates through and is arranged in the first fixing through hole, the second fixing through hole 515 and the fixing screw hole 28. Utilize fixing bolt realizes fixedly, and fixed stability is good and dismouting easy and simple to handle.
As an optional implementation manner, in this embodiment, a positioning column is convexly disposed on one side of the valve plate limiting plate facing the fixed scroll 2, a valve plate positioning hole 516 is formed in a position of the exhaust valve plate 51 corresponding to the positioning column in a penetrating manner, a scroll positioning hole 29 is formed in the outer side surface of the fixed scroll 2, and the positioning column penetrates through the valve plate positioning hole 516 and the scroll positioning hole 29. The positioning columns can play a certain positioning role in the installation process, and further preferably, the number of the positioning columns is at least 2, the positioning columns are symmetrically arranged on two sides of the first fixing through hole, the positioning columns are arranged so that when a single fixing bolt is used for fixing, the valve plate limiting plate and the exhaust valve plate can be prevented from rotating around the fixing bolt easily after the fixing bolt is loosened accidentally, and therefore the problem of gas leakage caused by the fact that the exhaust valve plate cannot cover the exhaust hole fully is solved.
Example 2
The embodiment 2 of the utility model provides a scroll compressor, it includes embodiment 1 the scroll compressor pump body, it has that job stabilization nature is good, and compresses the advantage that the efficiency is high.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. A scroll compressor pump body characterized by: comprises a bearing, a fixed scroll disk, a movable scroll disk, a crankshaft and an exhaust valve; the bearing is provided with a shaft hole in a penetrating way, the fixed scroll disk is detachably fixed on the bearing and encloses to form a working space, and the movable scroll disk is movably arranged in the working space; the crankshaft is movably arranged in the shaft hole in a penetrating way, and the end part of the crankshaft is fixedly connected with the movable scroll disk and can drive the movable scroll disk to rotate;
a fixed scroll wrap is convexly arranged on the inner side of the fixed scroll pan, a movable scroll wrap is convexly arranged on one side of the movable scroll pan facing the fixed scroll pan, and the fixed scroll wrap and the movable scroll wrap are meshed with each other and enclose a plurality of crescent-shaped refrigerant compression spaces; the fixed scroll disk is provided with an exhaust hole in an axial penetrating manner and an air inlet hole in a radial direction, and the exhaust hole and the air inlet hole are communicated with the refrigerant compression space;
the exhaust hole comprises a main exhaust hole and a plurality of auxiliary exhaust hole groups, and the main exhaust hole is positioned in the center of the refrigerant compression space; the auxiliary exhaust hole groups are sequentially arranged outwards from the center of the refrigerant compression space, each auxiliary exhaust hole group comprises a plurality of auxiliary exhaust holes, and each exhaust hole is tangent to the fixed scroll wrap;
one end of the exhaust valve is detachably fixed on the outer side of the fixed scroll and movably covered on the exhaust hole.
2. The scroll compressor pump body of claim 1, wherein: the molded line of the fixed scroll tooth is formed by enclosing an inner involute of the fixed scroll and an outer involute of the fixed scroll; assist the exhaust vent group and include first auxiliary exhaust vent group, second in proper order and assist the exhaust vent group and the third, the first exhaust vent of assisting the exhaust vent group with decide the vortex outside and gradually burst at the seams tangent, the second assist the exhaust vent group and the third assist the exhaust vent of exhaust vent group with decide the vortex inboard and gradually burst at the seams tangent.
3. The scroll compressor pump body of claim 2, wherein: the number of the auxiliary exhaust holes in the first auxiliary exhaust hole group and the second auxiliary exhaust hole group is 3, and the number of the auxiliary exhaust holes in the third auxiliary exhaust hole group is 2.
4. The scroll compressor pump body of claim 3, wherein: the main exhaust hole and all the auxiliary exhaust holes are through holes without clearance volume.
5. The scroll compressor pump body of claim 2, wherein: the main exhaust hole and all the auxiliary exhaust holes are circular in cross section, and the inner diameter of the main exhaust hole is larger than that of the auxiliary exhaust hole.
6. The scroll compressor pump body of claim 1, wherein: the exhaust valve comprises an exhaust valve plate, the exhaust valve plate comprises a fixed end and a plurality of closed ends, the fixed end is fixed on the outer side of the fixed scroll, and each closed end is fixedly connected with the fixed end; the cover closing end comprises a main cover closing end and a plurality of auxiliary cover closing ends, the main cover closing end movable cover is arranged on the main exhaust hole, and each auxiliary cover closing end corresponds to the movable cover and is arranged on the auxiliary exhaust hole.
7. The scroll compressor pump body of claim 6, wherein: the exhaust valve further comprises a valve block limiting plate and a fixing bolt, the valve block limiting plate is matched with the exhaust valve block in shape, the valve block limiting plate penetrates through the valve block limiting plate to be provided with a first fixing through hole, the exhaust valve block corresponds to the first fixing through hole in position, a second fixing through hole is formed in the first fixing through hole in a penetrating mode, a fixing screw hole is formed in the outer side surface of the fixed scroll disc, and the fixing bolt sequentially penetrates through the first fixing through hole, the second fixing through hole and the fixing screw hole.
8. The scroll compressor pump body of claim 7, wherein: the valve block limiting plate faces a positioning column which is convexly arranged on one side of the fixed scroll disc, the exhaust valve block corresponds to the position of the positioning column and is penetrated by a valve block positioning hole, a scroll disc positioning hole is formed in the outer side surface of the fixed scroll disc, and the positioning column penetrates through the exhaust valve block positioning hole and the scroll disc positioning hole.
9. The scroll compressor pump body of claim 8, wherein: the number of the positioning columns is at least 2, and the positioning columns are symmetrically arranged on two sides of the first fixing through hole.
10. A scroll compressor characterized by: comprising the scroll compressor pump body of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120803734.9U CN214944947U (en) | 2021-04-19 | 2021-04-19 | Scroll compressor pump body and scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120803734.9U CN214944947U (en) | 2021-04-19 | 2021-04-19 | Scroll compressor pump body and scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214944947U true CN214944947U (en) | 2021-11-30 |
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ID=79043089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120803734.9U Active CN214944947U (en) | 2021-04-19 | 2021-04-19 | Scroll compressor pump body and scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214944947U (en) |
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2021
- 2021-04-19 CN CN202120803734.9U patent/CN214944947U/en active Active
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