CN219974800U - Compressor vortex plate, vortex plate assembly and vortex compressor - Google Patents
Compressor vortex plate, vortex plate assembly and vortex compressor Download PDFInfo
- Publication number
- CN219974800U CN219974800U CN202321323843.6U CN202321323843U CN219974800U CN 219974800 U CN219974800 U CN 219974800U CN 202321323843 U CN202321323843 U CN 202321323843U CN 219974800 U CN219974800 U CN 219974800U
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- scroll
- vortex
- plate
- compressor
- movable
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 17
- 239000010721 machine oil Substances 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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Abstract
The utility model provides a compressor scroll and a scroll assembly thereof, wherein a fixed scroll is provided with a scroll baseplate, an inner cavity is formed in the scroll baseplate, a scroll tooth part is arranged in the scroll baseplate, a scroll edge part is formed on the edge of the scroll baseplate, a plurality of scroll mounting holes are formed in the edge part of the scroll baseplate, a scroll through hole vertically penetrating the scroll is formed in the outermost side of the scroll tooth part, and the scroll through hole is of a through hole structure extending upwards from the bottom surface of the scroll baseplate to the top surface of the scroll baseplate. The vortex plate assembly comprises the fixed vortex plate, the movable vortex plate and the frame, wherein the vortex plate through hole of the fixed vortex plate is correspondingly positioned near the outer side of the movable plate baseplate, and the bottom end of the vortex plate through hole is communicated with the medium-pressure cavity. A scroll compressor is also provided, which adopts the compressor scroll and the scroll assembly. The utility model can lubricate the anti-rotation slip ring and the movable scroll under the working condition of ultralow pressure ratio, thereby improving the running performance of the scroll compressor and the reliability of the scroll compressor.
Description
Technical Field
The present utility model relates to a scroll compressor, and more particularly, to a compressor scroll and a scroll assembly thereof, and a scroll compressor equipped with the compressor scroll and the scroll assembly.
Background
The scroll compressor is widely applied to systems such as an air conditioner and a heat pump, and the like, and as shown in fig. 1, the scroll compressor is composed of a closed shell, a fixed scroll 1, a movable scroll 2, a frame, a crankshaft, an anti-rotation slip ring 4, a motor and an oil supply structure device, wherein the fixed scroll 1, the movable scroll 2 and the frame are assembled to form a scroll assembly, refrigerating machine oil is transported to a crankshaft oil duct through an oil pump, an upper bearing of the movable scroll 2 is lubricated, the movable scroll 2 performs circular motion and lubricating oil is transported from an inner exhaust cavity of a sealing ring 26 to an outer medium-pressure cavity. In order to ensure the oil supply of the movable scroll 2 and the anti-rotation slip ring 4, the lowest operating pressure ratio epsilon of the scroll compressor under the conventional scroll assembly is 1.5 (epsilon=discharge pressure Pd/suction pressure Ps), and the intermediate pressure Pb of the intermediate pressure chamber is about 1.35 times of the suction pressure Ps, i.e. the discharge pressure Pd of the discharge chamber is greater than the intermediate pressure Pb of the intermediate pressure chamber, and the seal ring 26 is opened to the outside under the action of the pressure difference between the two sides Pb and Pd thereof, so that the lubricant is transported from the inside to the outside of the seal ring 26. Ps, pb and Pd marked in fig. 1 are respectively corresponding to an air suction cavity, a medium pressure cavity and an air discharge cavity, the center of the fixed scroll 1 is provided with an air discharge hole communicated with the air discharge cavity, and when the compressor is discharged, the air discharge hole is opened to enable the upper part of the fixed scroll 1 in the closed shell of the compressor to have the air discharge pressure Pd communicated with the air discharge cavity. The existing scroll compressor with the scroll assembly is not suitable for the ultralow pressure ratio working condition, namely, when the scroll compressor needs to work under the ultralow pressure ratio working condition with epsilon <1.5, especially under the ultralow pressure ratio working condition with epsilon <1.3, namely, the exhaust pressure Pd of the exhaust cavity is 1.3 times of the suction pressure Ps, the exhaust pressure Pd of the scroll assembly is smaller than the intermediate pressure Pb, at the moment, the sealing ring 26 is closed, the refrigerating machine oil cannot lubricate the anti-rotation slip ring 4 and the mirror surface 20 of the movable scroll 2 through the sealing ring 26, sintering is easy to cause, the reliability of the scroll compressor is poor, and therefore, the improvement is needed.
Disclosure of Invention
The utility model aims to provide a compressor scroll and a scroll assembly thereof, which are capable of lubricating an anti-rotation slip ring and a moving scroll under the working condition of ultralow pressure ratio, so that the running performance of the scroll compressor is improved, and the reliability of the scroll compressor is improved.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a compressor vortex dish, its has the vortex dish base plate, has the inner chamber in the vortex dish base plate and is equipped with vortex dish tooth portion, has vortex dish limit portion and has a plurality of vortex dish mounting holes on the edge of vortex dish base plate, and be located the outside of vortex dish tooth portion and have the vertical vortex dish through-hole that runs through the setting, the vortex dish through-hole is the through-hole structure that upwards extends to the top surface of vortex dish base plate by the bottom surface of vortex dish base plate, the exhaust chamber accessible open state's vortex dish through-hole and the medium pressure chamber intercommunication that forms below the vortex dish base plate of vortex dish base plate.
Preferably, the cross section of the through hole of the vortex plate is a circular hole or an elongated hole.
Preferably, the top of the scroll through hole has a top hole portion with a narrowed inner diameter.
Preferably, the top surface of the scroll base plate is provided with a bypass valve on the scroll through hole, and the bypass valve can be opened or closed according to the air pressure difference between the top surface side of the scroll base plate and the bottom surface side of the scroll base plate.
Preferably, the bypass valve comprises a bypass valve plate, the bypass valve plate is of a long sheet structure with two ends provided with a valve plate part and a fixing part respectively, the fixing part is fixedly connected to the scroll base plate, and the valve plate part covers the scroll through hole to open or close the scroll through hole.
Preferably, the fixing part of the bypass valve plate is fastened and mounted on the scroll base plate through bolts.
A vortex plate assembly comprises a fixed vortex plate, a movable vortex plate and a frame; the fixed scroll is fixedly arranged at the top end of the frame, and the bottom surface of the scroll baseplate is in sealing connection with the top end of the frame through the scroll mounting hole and the fixed disk connecting piece; the movable vortex plate is movably arranged in the frame and matched with the fixed vortex plate to form a vortex compression cavity, and the movable vortex plate is in sealing connection with the frame through the bottom surface of the movable disc shaft sleeve and the sealing ring; the outside of the movable scroll in the frame is provided with a medium pressure cavity, and the scroll through hole of the fixed scroll is correspondingly positioned near the outside of the movable disk baseplate, and the bottom end of the scroll through hole is communicated with the medium pressure cavity.
Preferably, the medium pressure chamber communicates with the suction chamber of the scroll compression chamber through a back pressure passage provided in the orbiting scroll.
Preferably, the bottom surface of the movable disc shaft sleeve is provided with a through oil groove and a plurality of circular oil grooves distributed along the arc shape of the movable disc shaft sleeve, and the through oil groove extends from the inner edge of the bottom surface of the movable disc shaft sleeve to the middle of the bottom surface of the movable disc shaft sleeve. Wherein, circular oil groove is including 8 to 12.
A scroll compressor employing the above-described scroll assembly.
The utility model has the following substantial characteristics and progress:
1. according to the compressor scroll and the scroll assembly thereof, the vertical penetrating scroll through holes are formed in the edge of the scroll baseplate, so that connectivity among the scroll through holes, the exhaust cavity and the medium-pressure cavity is realized, refrigerating machine oil lubricates the anti-rotation slip ring and the mirror surface of the movable scroll when the scroll compressor works under a low pressure ratio working condition, and applicability of the scroll compressor is improved.
2. According to the vortex disc assembly, the through oil grooves and the plurality of circular oil grooves are formed in the bottom surface of the movable disc shaft sleeve, so that the lubricating effect of the refrigerating machine oil on the mirror surface of the movable vortex disc is guaranteed, the spinning compressor works stably under the working condition of low pressure ratio, and the reliability of the vortex compressor is improved.
Drawings
FIG. 1 is a cross-sectional view of a prior art scroll assembly.
Fig. 2 is a cross-sectional view of a construction of a scroll assembly provided by the present utility model.
Fig. 3 and 4 are schematic structural views of the bottom surface of a movable disc sleeve of a scroll assembly according to the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Examples
As shown in fig. 2, a scroll assembly includes a fixed scroll 1, a movable scroll 2, and a frame 3. The fixed scroll 1 is fixedly arranged at the top end of the frame 3, and the bottom surface of the scroll baseplate 11 is in sealing connection with the top surface of the frame 3 through a scroll mounting hole and a fixed disk connecting piece. The stator connection is bolted as shown in fig. 2.
The fixed scroll 1 has a scroll base plate 11, a scroll wrap 12 is provided in the scroll base plate 11 with an inner cavity, and a scroll rim 13 is provided on an edge of the scroll base plate 11 and has a plurality of scroll mounting holes. The scroll base plate 11 is provided with a scroll through hole 14 which is vertically and penetratingly arranged on the outermost side of the scroll tooth part 12, the scroll through hole 14 is of a through hole structure which extends upwards from the bottom surface of the scroll base plate 11 to the top surface of the scroll base plate 11, the cross section of the scroll through hole 14 is a circular hole or a strip-shaped hole, the scroll through hole 14 is communicated with a medium pressure cavity to realize communication with an exhaust cavity and the medium pressure cavity, and the exhaust cavity formed above the scroll base plate 11 is communicated with the medium pressure cavity formed below the scroll base plate 11 through the scroll through hole 14 in an opened state, so that refrigerating machine oil can be conveyed from the exhaust cavity to the medium pressure cavity to lubricate a mirror plate surface 20 of the anti-rotation slip ring 4 and the moving scroll 2 when the scroll compressor works under an ultralow pressure ratio working condition, and the mirror plate surface 20 is a sliding contact surface of the fixed scroll 1 and the moving scroll 2.
The top surface of the scroll base plate 11 is provided with a bypass valve 15 on the scroll through hole 14, and the bypass valve 15 is a one-way valve. The bypass valve 15 includes a bypass valve plate 151, where the bypass valve plate 151 has a long sheet structure with two ends provided with a valve plate portion and a fixing portion, the fixing portion is fixedly installed on the scroll base plate 11 through bolt fastening, and the valve plate portion covers the scroll through hole 14 to open or close the scroll through hole. The bypass valve 15 can be automatically opened or closed according to the air pressure difference between the top surface side of the scroll base plate 11 and the bottom surface side of the scroll base plate 11, and the pressure relief is used to adjust the internal and external pressure difference of the seal ring 26, so that the oil supply amount of the scroll compressor is not affected.
Ps, pb, pd marked in fig. 2 correspond to the suction chamber, the medium pressure chamber, and the exhaust chamber, respectively. When the exhaust pressure Pd of the exhaust chamber is greater than the intermediate pressure Pb of the intermediate pressure chamber, the seal ring 26 is opened, the intermediate pressure chamber is communicated with the exhaust chamber, the air pressure on the top surface side of the scroll base plate 11 is greater than the air pressure on the bottom surface side of the scroll base plate 11, the bypass valve 15 is automatically closed, and the scroll compressor supplies oil normally. When the exhaust pressure Pd of the exhaust chamber is smaller than the intermediate pressure Pb of the intermediate pressure chamber, the air pressure on the top surface side of the scroll base plate 11 is smaller than the air pressure on the bottom surface side of the scroll base plate 11, the bypass valve 15 is pushed open by the air in the intermediate pressure chamber, and the air in the intermediate pressure chamber is discharged along the scroll through hole 14 at this time, so that the intermediate pressure Pb of the intermediate pressure chamber is reduced, the pressure difference on both sides of the seal ring 26 is reduced, the seal ring 26 is opened, the intermediate pressure chamber is communicated with the exhaust chamber, and the scroll compressor supplies oil normally. In some columns, the top of the scroll through hole 14 has a top hole portion 141 with a narrowed inner diameter to facilitate air pressure build up to lift the bypass valve plate 151.
The movable vortex plate 2 is provided with a movable plate baseplate 21, a movable plate vortex tooth 22 positioned on the top surface of the movable plate baseplate 21 and a movable plate shaft sleeve 23 positioned on the bottom surface of the movable plate baseplate 21, the movable vortex plate 2 is movably arranged in the frame 3 and is matched with the fixed vortex plate 1 to form a vortex compression cavity 25, and the movable vortex plate 2 is in sealing connection with the frame 3 through the bottom surface of the movable plate shaft sleeve 23 and a sealing ring 26. The orbiting scroll is provided with a back pressure passage, which is described in detail in patent document CN201920964325, and will not be described here. The intermediate pressure chamber communicates with the suction chamber of the scroll compression chamber 25 through the above-described back pressure passage.
As shown in fig. 3 and 4, the bottom surface of the movable disc sleeve 23 is provided with a through oil groove 231 and a plurality of circular oil grooves 232 distributed along the arc shape of the movable disc sleeve 23, wherein the through oil groove 231 extends from the inner edge of the bottom surface of the movable disc sleeve 23 to the middle of the bottom surface of the movable disc sleeve 23. In some examples, the number of circular oil grooves 232 is between 8 and 12.
The scroll compressor of the present utility model employs the scroll assembly of the present embodiment. When the scroll compressor works under the working condition of low pressure ratio, the operating pressure ratio epsilon is smaller than 1.5, and the exhaust pressure Pd is smaller than the intermediate pressure Pb, the bypass valve 15 is jacked by the gas in the intermediate pressure cavity, the intermediate pressure cavity is decompressed, the intermediate pressure Pb is reduced, the pressure difference between the exhaust pressure Pd and the intermediate pressure Pb can not cause the sealing ring 26 to be closed, the exhaust cavity and the intermediate pressure cavity are communicated, and the refrigerating machine oil lubricates the anti-rotation slip ring 4 and the mirror plate surface 20 of the movable scroll 2 through the sealing ring 26.
Claims (10)
1. The utility model provides a compressor vortex dish, its has the vortex base plate, has the inner chamber in the vortex base plate and is equipped with vortex dish tooth portion, has vortex dish limit portion and has a plurality of vortex dish mounting holes on the edge of vortex base plate, its characterized in that: the side part of the vortex plate baseplate and the outermost side of the vortex plate tooth part are provided with vortex plate through holes vertically penetrating the vortex plate through holes, and the vortex plate through holes are through hole structures extending upwards from the bottom surface of the vortex plate baseplate to the top surface of the vortex plate baseplate.
2. A compressor scroll as set forth in claim 1, wherein: the cross section of the vortex plate through hole is a round hole or a strip-shaped hole.
3. A compressor scroll as set forth in claim 2, wherein: the top of the scroll through hole is provided with a top hole part with a narrowed inner diameter.
4. A compressor scroll as claimed in claim 1, 2 or 3, wherein: the top surface of the vortex plate base plate is provided with a bypass valve on the vortex plate through hole, and the bypass valve can be opened or closed according to the air pressure difference between the top surface side of the vortex plate base plate and the bottom surface side of the vortex plate base plate.
5. A compressor scroll as set forth in claim 4, wherein: the bypass valve comprises a bypass valve plate, wherein the bypass valve plate is of a long sheet-shaped structure, two ends of the long sheet-shaped structure are respectively provided with a valve plate part and a fixing part, the fixing parts are fixedly connected to the vortex disc base plate, and the valve plate parts cover the vortex disc through holes to open or close the vortex disc through holes.
6. A compressor scroll as set forth in claim 5, wherein: the fixed part of the bypass valve plate is fastened and installed on the vortex plate base plate through bolts.
7. A vortex plate assembly comprises a fixed vortex plate, a movable vortex plate and a frame; the fixed scroll is a compressor scroll as claimed in claim 4, and is fixedly arranged at the top end of the frame; the movable vortex plate is movably arranged in the frame and matched with the fixed vortex plate to form a vortex compression cavity, and the movable vortex plate is in sealing connection with the frame through the bottom surface of the movable disc shaft sleeve and the sealing ring; the frame is internally provided with a medium pressure cavity at the outer side of the movable vortex plate, and is characterized in that: the vortex disc through holes of the fixed vortex disc are correspondingly positioned near the outer side of the movable disc base plate, and the bottom ends of the vortex disc through holes are communicated with the medium pressure cavity.
8. A scroll assembly as recited in claim 7, wherein: the medium pressure cavity is communicated with the air suction cavity of the vortex compression cavity through a back pressure channel arranged on the movable vortex plate.
9. A scroll assembly as recited in claim 7, wherein: the bottom surface of the movable disc shaft sleeve is provided with a through oil groove and a plurality of circular oil grooves distributed along the arc shape of the movable disc shaft sleeve, and the through oil groove extends from the inner edge of the bottom surface of the movable disc shaft sleeve to the middle of the bottom surface of the movable disc shaft sleeve.
10. A scroll compressor, characterized by: the scroll assembly of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321323843.6U CN219974800U (en) | 2023-05-29 | 2023-05-29 | Compressor vortex plate, vortex plate assembly and vortex compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321323843.6U CN219974800U (en) | 2023-05-29 | 2023-05-29 | Compressor vortex plate, vortex plate assembly and vortex compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219974800U true CN219974800U (en) | 2023-11-07 |
Family
ID=88595663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321323843.6U Active CN219974800U (en) | 2023-05-29 | 2023-05-29 | Compressor vortex plate, vortex plate assembly and vortex compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219974800U (en) |
-
2023
- 2023-05-29 CN CN202321323843.6U patent/CN219974800U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |