CN114738273A - Static scroll plate applied to scroll compressor and scroll compressor - Google Patents
Static scroll plate applied to scroll compressor and scroll compressor Download PDFInfo
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- CN114738273A CN114738273A CN202210471516.9A CN202210471516A CN114738273A CN 114738273 A CN114738273 A CN 114738273A CN 202210471516 A CN202210471516 A CN 202210471516A CN 114738273 A CN114738273 A CN 114738273A
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- 230000003068 static effect Effects 0.000 title abstract description 19
- 239000003921 oil Substances 0.000 abstract description 172
- 239000010687 lubricating oil Substances 0.000 abstract description 49
- 230000006835 compression Effects 0.000 description 19
- 238000007906 compression Methods 0.000 description 19
- 238000007789 sealing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0253—Details concerning the base
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/023—Lubricant distribution through a hollow driving shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a static scroll applied to a scroll compressor and the scroll compressor, wherein the static scroll comprises: the rotary disc body is provided with a working medium flow groove with one open end; the vortex teeth are arranged in the working medium flow grooves to form vortex cavities; and the oil supply groove is arranged on the rotating disc body and surrounds the open end of the working medium flowing groove, and the oil supply groove is suitable for being communicated with an oil outlet hole of a movable vortex disc of the vortex compressor. From this, through setting up closed annular oil supply tank, lubricating oil can fully lubricate the contact surface between moving vortex dish and the static vortex dish, reduces the wearing and tearing between moving vortex dish and the static vortex dish, and closed annular oil supply tank realizes the all-round sealed between working medium flowing groove and the backpressure chamber, avoids the backpressure to leak in the working medium flowing groove through the clearance of moving vortex dish and static vortex dish contact end face, avoids the working medium to be compressed repeatedly, promotes scroll compressor performance.
Description
Technical Field
The present invention relates to the field of compressors, and in particular, to a fixed scroll applied to a scroll compressor and a scroll compressor having the same.
Background
In the related art, the existing scroll compressor comprises a fixed scroll, a movable scroll and a crankshaft, wherein the movable scroll is mounted on the crankshaft, the movable scroll is matched with the fixed scroll and can move relative to the fixed scroll, when the scroll compressor works, the crankshaft does eccentric motion, and the movable scroll does revolution motion, so that the processes of air suction, compression and exhaust of the compressor are realized. The static vortex plate and the movable vortex plate are contacted after being assembled, when the movable vortex plate rotates, the movable vortex plate only depends on the movable vortex plate to rotate and is lubricated by oil on a contact surface between the static vortex plate and the movable vortex plate, but the lubricating oil between the static vortex plate and the movable vortex plate is less, an oil film cannot be formed between the static vortex plate and the movable vortex plate, the contact surface between the static vortex plate and the movable vortex plate is extremely easy to wear seriously, the service life of the static vortex plate and the movable vortex plate is influenced, in addition, the static vortex plate and the movable vortex plate are not reliably sealed, a large pressure difference exists between the pressure in a backpressure cavity of the compressor and the suction pressure, the backpressure can leak to a working medium flowing groove through a gap between the movable vortex plate and the static vortex plate, the working medium is repeatedly compressed, the power of the vortex compressor is increased, and the energy efficiency of the vortex compressor is reduced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a fixed scroll applied to a scroll compressor, in which a closed annular oil supply groove is provided, so that a contact surface between a movable scroll and the fixed scroll can be sufficiently lubricated, abrasion between the movable scroll and the fixed scroll is reduced, an all-directional seal between a working medium flow groove and a back pressure chamber is realized, an increase in power of the scroll compressor is avoided, and energy efficiency and performance of the scroll compressor are improved.
The invention further provides a scroll compressor.
The fixed scroll applied to the scroll compressor according to the present invention includes: the rotary disc comprises a rotary disc body, wherein the rotary disc body defines a working medium flow groove with one open end; the vortex teeth are arranged in the working medium flowing grooves to form vortex cavities;
and the oil supply groove is arranged on the rotary disc body and surrounds the opened end of the working medium flow groove, and the oil supply groove is suitable for being communicated with an oil outlet hole of a movable vortex disc of the vortex compressor.
According to the fixed scroll disk applied to the scroll compressor, the closed annular oil supply groove is formed, so that lubricating oil can fully lubricate a contact surface between the fixed scroll disk and the movable scroll disk, abrasion between the movable scroll disk and the fixed scroll disk is reduced, the closed annular oil supply groove realizes all-dimensional sealing between the working medium flow groove and the back pressure cavity, back pressure is prevented from leaking into the working medium flow groove through a gap between contact end surfaces of the movable scroll disk and the fixed scroll disk, the working medium is further prevented from being repeatedly compressed, the power of the scroll compressor is prevented from being increased, the energy efficiency of the scroll compressor is improved, and the performance of the scroll compressor is also improved.
In some embodiments of the present invention, an inner side wall of the oil supply groove is spaced apart from the working medium flow groove in a radial direction of the fixed scroll.
In some examples of the present invention, a distance between an inner sidewall of the oil supply groove and the working medium flow groove is a, and satisfies a relation: a is more than or equal to 1 mm.
In some examples of the invention, the open end of the oil supply groove is adapted to be covered by the orbiting scroll.
In some examples of the present invention, the oil supply groove has a width dimension B that satisfies the relationship: b is more than or equal to 1.2mm and less than or equal to 2 mm.
In some examples of the present invention, the oil supply groove has a depth dimension C that satisfies the relationship: c is more than or equal to 0.5mm and less than or equal to 1.8 mm.
In some examples of the present invention, an inner side wall of the oil supply groove has a groove recessed toward the inside of the spiral body in a radial direction of the fixed scroll, the groove being adapted to communicate with the oil outlet hole.
In some examples of the invention, the groove is configured as an arc-shaped groove.
In some examples of the present invention, the oil supply groove has a recessed section recessed toward a radially inner side of the spiral body, the recessed section being contiguous with the groove.
In some examples of the invention, the recessed section is configured as an arc-shaped section.
The scroll compressor comprises the fixed scroll applied to the scroll compressor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a fixed scroll according to an embodiment of the present invention;
FIG. 2 is a schematic view of an orbiting scroll according to an embodiment of the present invention;
FIG. 3 is a schematic view of an assembly of a orbiting scroll and a fixed scroll according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a scroll compressor according to an embodiment of the present invention;
fig. 5 is an enlarged view at D in fig. 4.
Reference numerals:
a fixed scroll 100;
a spinning disk body 10;
a working medium flow groove 11; the working medium enters the cavity 111; a working medium compression chamber 112;
a wrap 12;
an oil supply tank 13; a recess 131; a recessed section 132; an inner sidewall 133; an outer sidewall 134;
a working medium outlet 14; a vortex chamber 15;
a movable scroll 200;
an oil outlet 20; a back pressure chamber 21;
a scroll compressor 300; a crankshaft 301; an oil sump 302; an oil supply passage 303.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Referring to fig. 1 to 5, a fixed scroll 100 according to an embodiment of the present invention will be described, and the fixed scroll 100 may be applied to a scroll compressor 300, but the present invention is not limited thereto, and the fixed scroll 100 may also be applied to other apparatuses in which the fixed scroll 100 needs to be disposed, and the present application will be described by taking the application of the fixed scroll 100 to the scroll compressor 300 as an example.
As shown in fig. 1 to 5, a fixed scroll 100 according to an embodiment of the present invention includes: a spiral body 10, a wrap 12 and a closed-loop oil supply groove 13. The open working medium flow groove 11 of one end is injectd to the capstan body 10, vortex 12 locates and forms the vortex chamber in the working medium flow groove 11, vortex 12 can be separated working medium flow groove 11 and get into chamber 111 and working medium compression chamber 112 for the working medium, working medium gets into chamber 111 and working medium compression chamber 112 and constitutes the vortex chamber, furtherly, the capstan body 10 has working medium import and working medium export 14, the vortex chamber all communicates with working medium import and working medium export 14, working medium gets into chamber 111 intercommunication working medium import and working medium compression chamber 112, working medium export 14 and working medium compression chamber 112 intercommunication. Further, as shown in fig. 1, the scroll wrap 12 is provided in a scroll-type plate-like structure, and by disposing the scroll wrap 12 in the working medium flow groove 11, the scroll wrap 12 divides the working medium flow groove 11 into an arc-type working medium intake chamber 111 and a scroll-type working medium compression chamber 112. The working medium inlet cavity 111 and the working medium compression cavity 112 are working medium circulation channels. The working medium flows into the working medium inlet cavity 111 through the working medium inlet, the working medium entering the working medium inlet cavity 111 flows into the working medium compression cavity 112 along the working medium inlet cavity 111, and finally the working medium flows out from the working medium outlet 14.
The closed annular oil supply groove 13 is arranged in the scroll body 10, the oil supply groove 13 is arranged around the open end of the working medium flow groove 11, the oil supply groove 13 is suitable for being communicated with the oil outlet hole 20 of the movable scroll 200 of the scroll compressor 300, and lubricating oil flows into the oil supply groove 13 from the oil outlet hole 20 through the matching between the oil supply groove 13 and the oil outlet hole 20, so that the contact surface between the movable scroll 200 and the fixed scroll 100 is fully lubricated.
Specifically, as shown in fig. 1, 4 and 5, during operation of the scroll compressor 300, the crankshaft 301 of the scroll compressor 300 rotates, under the coupling action of the pressure difference, the lubricating oil in the oil pool 302 of the scroll compressor 300 is delivered to the oil outlet hole 20 of the movable scroll 200 through the oil supply channel 303 of the crankshaft 301, when the movable scroll 200 moves relative to the fixed scroll 100 to connect the oil outlet hole 20 with the oil supply groove 13, the lubricating oil flows into the oil supply groove 13 from the oil outlet hole 20, and the lubricating oil is delivered between the movable scroll 200 and the fixed scroll 100 to provide sufficient lubrication for the contact end surfaces of the movable scroll 200 and the fixed scroll 100, and further, the friction force between the contact end surfaces of the movable scroll 200 and the fixed scroll 100 is reduced, the normal operation between the movable scroll 200 and the fixed scroll 100 is ensured, the abrasion between the movable scroll 200 and the fixed scroll 100 is reduced, and the service lives of the movable scroll 200 and the fixed scroll 100 are prolonged.
Furthermore, by providing the oil supply groove 13 with a closed annular structure, after the lubricating oil flows into the oil supply groove 13 from the oil outlet hole 20, the lubricating oil is simultaneously supplied in two directions along the oil supply groove 13, so that sufficient lubricating oil is ensured in the contact area between the movable scroll 200 and the fixed scroll 100, and dry friction between the contact end surfaces of the movable scroll 200 and the fixed scroll 100 due to insufficient oil supply is avoided. Meanwhile, the oil supply groove 13 is set to be a closed annular structure, after lubricating oil flows into the oil supply groove 13 from the oil outlet hole 20, when the oil supply groove 13 is filled with the lubricating oil, a certain pressure is provided in the oil supply groove 13, an oil film is easily formed between contact surfaces of the movable scroll 200 and the fixed scroll 100, and the oil film separates the working medium flow groove 11 from the back pressure cavity 21, so that the working medium flow groove 11 and the back pressure cavity 21 are sealed in an all-dimensional manner, the back pressure is prevented from leaking into the working medium flow groove 11 through a gap between contact end surfaces of the movable scroll 200 and the fixed scroll 100, the power of the scroll compressor 300 is prevented from being increased due to repeated compression of the working medium, the energy efficiency of the scroll compressor 300 is improved, and the purpose of improving the performance of the scroll compressor 300 is achieved.
Therefore, by providing the closed annular oil supply groove 13, the lubricating effect of the whole region between the movable scroll 200 and the fixed scroll 100 is achieved, and further, the dry friction generated on the contact end surface of the movable scroll 200 and the fixed scroll 100 is avoided, the frictional force between the movable scroll 200 and the fixed scroll 100 is reduced, and the working performance of the scroll compressor 300 is improved. And, after the lubricating oil flows into the oil supply groove 13 through the oil outlet 20, the closed annular oil supply groove 13 realizes the bidirectional oil supply of the lubricating oil, so as to ensure that the lubricating oil is provided in the whole area between the movable scroll 200 and the fixed scroll 100 in the circumferential direction, and the lubricating oil in the oil supply groove 13 separates the working medium compression cavity 112 from the back pressure cavity 21, thereby realizing the omnibearing sealing between the working medium compression cavity 112 and the back pressure cavity 21, avoiding the back pressure from leaking into the working medium compression cavity 112 through the gap between the contact end surfaces of the movable scroll 200 and the fixed scroll 100, preventing the power of the scroll compressor 300 from increasing due to the repeated compression of the working medium, and achieving the purpose of improving the performance of the scroll compressor 300.
In some embodiments of the present invention, as shown in fig. 1, an inner side wall 133 of the oil supply groove 13 is spaced apart from the working medium flow groove 11 in the radial direction of the fixed scroll 100. As shown in fig. 1, the oil supply groove 13 extends in the circumferential direction of the fixed scroll 100, the oil supply groove 13 is a closed annular groove body disposed around the open end of the working medium flow groove 11, and in the radial direction of the fixed scroll 100, by spacing the inner sidewall 133 of the oil supply groove 13 from the working medium flow groove 11, a certain distance exists between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11, after the lubricating oil flows into the oil supply groove 13 from the oil outlet 20, it is ensured that the working medium flow groove 11 and the back pressure chamber 21 are sealed in all directions, thereby further avoiding the back pressure from leaking into the working medium flow groove 11 through the gap between the contact end surfaces of the movable scroll 200 and the fixed scroll 100, further preventing the power of the scroll compressor 300 from increasing due to the repeated compression of the working medium, further improving the energy efficiency of the scroll compressor 300, and further improving the performance of the scroll compressor 300.
In some embodiments of the present invention, as shown in FIG. 1, inner sidewall 133 of oil supply groove 13 is spaced a distance A from working medium flow groove 11, satisfying the relationship: a is more than or equal to 1 mm. In the radial direction of the fixed scroll 100, the inner sidewall 133 of the oil supply groove 13 is spaced from the working medium flow groove 11, and the distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11 is equal to or greater than 1mm, wherein the greater the distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11 is, the better the sealing between the working medium flow groove 11 and the back pressure chamber 21 is after the lubricating oil flows into the oil supply groove 13 from the oil outlet hole 20, and conversely, the smaller the distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11 is, the smaller the amount of lubricating oil between the movable scroll 200 and the fixed scroll 100 is, and the poorer the sealing between the movable scroll 200 and the fixed scroll 100 is. In the present application, by setting the distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11 to be 1mm or more, it is possible to ensure a sufficient distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11, and to ensure sufficient lubrication oil between the contact surfaces of the orbiting scroll 200 and the fixed scroll 100, and to ensure better sealing between the working medium flow groove 11 and the back pressure chamber 21. It should be noted that, in the circumferential direction of the fixed scroll 100, the distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11 may be variable, and the distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11 may also be constant, and in the circumferential direction of the fixed scroll 100, the distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11 at each region is specifically selected according to actual conditions, but the minimum value of the distance between the inner sidewall 133 of the oil supply groove 13 and the working medium flow groove 11 is 1 mm.
Furthermore, a certain distance exists between the inner side wall 133 of the oil supply groove 13 and the working medium flowing groove 11, so that dry friction caused by leakage of lubricating oil between the contact surfaces of the movable scroll 200 and the fixed scroll 100 is avoided, the contact surfaces of the movable scroll 200 and the fixed scroll 100 are abraded, and the service lives of the fixed scroll 100 and the movable scroll 200 are prolonged.
In some embodiments of the present invention, as shown in fig. 1, the open end of the oil supply tank 13 is adapted to be covered by the passive scroll 200. Further, when the scroll compressor 300 is disposed in the direction of fig. 4, after the orbiting scroll 200 and the fixed scroll 100 are assembled together, the movable scroll 200 is positioned below the fixed scroll 100, the wrap of the movable scroll 200 extends into the working medium flow groove 11, the oil supply groove 13 is arranged on the lower surface of the scroll body 10, the lower end of the oil supply groove 13 is opened, in the radial direction of the fixed scroll 100, the outer side wall 134 of the oil supply groove 13 is located inside the movable scroll 200, the movable scroll 200 covers the open end of the oil supply groove 13, and during the operation of the movable scroll 200, the movable scroll 200 can cover the open end of the oil supply tank 13 in real time 0 to prevent the oil supply tank 13 from communicating with the back pressure chamber 21, and after the lubricating oil flows into the oil supply tank 13 from the oil outlet hole 20, the leakage of the lubricating oil in oil supply groove 13 is avoided, and it is ensured that the lubricating oil in oil supply groove 13 sufficiently lubricates the contact surface between fixed scroll 100 and orbiting scroll 200.
Further, the distance between the outer side wall 134 of the oil supply groove 13 and the outer edge of the movable scroll 200 in the radial direction of the fixed scroll 100 is not less than 1mm, so that the outer side wall 134 of the oil supply groove 13 can be ensured to be positioned inside the movable scroll 200 in the radial direction of the fixed scroll 100, the lubricating oil in the oil supply groove 13 can separate the oil supply groove 13 from the back pressure chamber 21, and the lubricating oil in the oil supply groove 13 can be effectively prevented from leaking. The greater the distance between the outer side wall 134 of the oil supply groove 13 and the back pressure chamber 21, the better the sealing performance between the oil supply groove 13 and the back pressure chamber 21, and conversely, the smaller the distance between the outer side wall 134 of the oil supply groove 13 and the back pressure chamber 21, the poorer the sealing performance between the oil supply groove 13 and the back pressure chamber 21. Through setting up the interval distance between the outer wall 134 of oil feed groove 13 and the outer fringe of moving scroll 200 and be more than or equal to 1mm, ensure that move scroll 200 operation in-process oil feed groove 13 and back pressure chamber 21 intercommunication not to avoid moving scroll 200 and static scroll 100 contact surface to leak because of lubricating oil and lead to the dry friction condition to take place, reduce and move the wearing and tearing between scroll 200 and static scroll 100 contact surface, further prolonged static scroll 100 and the life of moving scroll 200.
Moreover, a certain spacing distance exists between the inner side wall 133 of the oil supply groove 13 and the working medium flowing groove 11, the open end of the oil supply groove 13 is covered by the driven scroll plate 200, the lubricating oil in the oil supply groove 13 can separate the working medium flowing groove 11 from the back pressure cavity 21, all-around sealing between the working medium flowing groove 11 and the back pressure cavity 21 is realized, the phenomenon that back pressure leaks into the working medium flowing groove 11 through a gap between the end surfaces of the movable scroll plate 200 and the fixed scroll plate 100 is avoided, the working medium is prevented from being compressed repeatedly, the effect of reducing the power of the scroll compressor 300 is achieved, and the working performance of the scroll compressor 300 is improved.
In some embodiments of the present invention, as shown in fig. 1, the oil supply groove 13 has a width dimension B that satisfies the relationship: b is more than or equal to 1.2mm and less than or equal to 2 mm. Here, the width dimension of the oil supply groove 13 in the radial direction of the fixed scroll 100 is B, for example: b is a value of 1.2mm, 1.5mm, 2mm, etc., and it should be noted that the larger the width dimension of the oil supply groove 13 is, the more the amount of the lubricating oil in the oil supply groove 13 is, the larger the contact area of the lubricating oil with the movable scroll 200 and the fixed scroll 100 is, the wider the range lubricated by the oil supply groove 13 is, and the lubrication effect of the oil supply groove 13 is improved, whereas the smaller the width dimension of the oil supply groove 13 is, the less the amount of the lubricating oil in the oil supply groove 13 is, the smaller the contact area of the lubricating oil with the movable scroll 200 and the fixed scroll 100 is, the smaller the lubrication range is, and the lubrication effect of the oil supply groove 13 is reduced. In the application, the width dimension of the oil supply groove 13 is set to be B, so that the amount of lubricating oil in the oil supply groove 13 is appropriate, and on the basis of ensuring that the sliding scroll 200 and the fixed scroll 100 are sufficiently lubricated, the working medium flowing groove 11 and the backpressure cavity 21 are also ensured to be spaced apart, and then the all-around sealing between the working medium flowing groove 11 and the backpressure cavity 21 is realized. The width of the oil supply groove 13 is set according to the actual use requirement of the scroll compressor 300.
In some embodiments of the present invention, as shown in fig. 1, the oil supply groove 13 has a depth dimension C that satisfies the relationship: 0.5mm C1.8 mm, for example: c is 0.5mm, 1.5mm, 1.8mm, etc. In the axial direction of the spiral body 10, the oil supply groove 13 is recessed toward the inside of the spiral body 10, and the end of the oil supply groove 13 close to the movable scroll 200 is opened, so that the oil supply groove 13 having a depth dimension of C is formed. It should be noted that, the larger the depth of the oil supply groove 13 is, the larger the amount of lubricating oil that can be accommodated by the oil supply groove 13 is, the more sufficient lubricating oil can be supplied between the contact end surfaces of the movable scroll 200 and the fixed scroll 100, whereas, the smaller the depth of the oil supply groove 13 is, the smaller the amount of lubricating oil that can be accommodated by the oil supply groove 13 is, and further, the less sufficient lubricating oil can be supplied between the contact end surfaces of the movable scroll 200 and the fixed scroll 100, which may cause dry friction between the contact surfaces of the movable scroll 200 and the fixed scroll 100, and cause local abnormal wear. In this application, through setting up the degree of depth size with oil feed tank 13 to C, can guarantee that the interior lubricating oil mass of oil feed tank 13 is suitable, on guaranteeing fully moist slip vortex dish 200 and static vortex dish 100 basis, also guarantee to keep apart working medium flowing groove 11 and backpressure chamber 21, and then realize pressing all-round sealed between working medium flowing groove 11 and the backpressure chamber 21. The depth of the oil supply groove 13 is set according to the actual use requirement of the scroll compressor 300.
In some embodiments of the present invention, as shown in fig. 1 and 2, in the radial direction of the fixed scroll 100, the inner side wall 133 of the oil supply groove 13 has a groove 131 recessed toward the inside of the scroll body 10, and the groove 131 is adapted to communicate with the oil outlet hole 20. Wherein, when the movable scroll 200 and the fixed scroll 100 are assembled, the oil supply groove 13 is positioned above the oil outlet hole 20, and when the movable scroll 200 is in operation, when the movable scroll 200 is operated until the oil outlet hole 20 communicates with the oil supply groove 13, the lubricating oil flows into the oil supply groove 13 through the oil outlet hole 20, by providing the inner sidewall 133 of the oil supply groove 13 with the groove 131 depressed toward the inside of the disc body 10, during the operation of the orbiting scroll 200, the oil outlet hole 20 may communicate with the groove 131, and the lubricating oil may flow into the groove 131 through the oil outlet hole 20, achieving an oil supplying effect of the groove 131 into the oil supply groove 13, the arrangement can increase the communication time of the oil outlet hole 20 and the oil supply groove 13, realize the technical effect of prolonging the communication time of the oil outlet hole 20 and the oil supply groove 13, further, the oil supply groove 13 is ensured to supply oil sufficiently, the lubricating effect between the movable scroll 200 and the fixed scroll 100 is further improved, and the sealing effect between the movable scroll 200 and the fixed scroll 100 can also be improved.
In some embodiments of the present invention, as shown in fig. 1, the groove 131 is configured as an arc-shaped groove, further, the groove 131 is configured as a semicircular arc-shaped groove recessed into the scroll body 10, after the lubricating oil flows into the semicircular arc-shaped groove through the oil outlet 20, the lubricating oil is uniformly distributed into the oil supply grooves 13 on both sides through the arc-shaped surface of the arc-shaped groove, so that the oil is uniformly supplied in both directions of the oil supply grooves 13, the oil supply in the whole area between the movable scroll 200 and the fixed scroll 100 is ensured, and meanwhile, the omnibearing sealing between the working medium flow groove 11 and the back pressure cavity 21 is realized, thereby preventing the back pressure from leaking into the working medium flow groove 11 through the gap between the end surfaces of the movable scroll 200 and the fixed scroll 100, and improving the performance of the scroll compressor 300. Further, by configuring the concave groove 131 as an arc-shaped groove, the communication time between the oil outlet hole 20 and the oil supply groove 13 can be further increased, and the oil supply from the oil supply groove 13 can be further ensured, thereby further improving the lubrication effect between the orbiting scroll 200 and the fixed scroll 100.
In some embodiments of the present invention, as shown in fig. 1, the oil supply groove 13 has a recessed section 132 recessed toward the radially inner side of the spiral body 10, and the recessed section 132 is arranged adjacent to the groove 131. Further, in the circumferential direction of the rotating disk body 10, at least one side of the groove 131 is provided with the recessed section 132, that is, only one side of the groove 131 may be provided with the recessed section 132, and also both sides of the groove 131 may be provided with the recessed sections 132, by providing the recessed section 132 recessed toward the radial inner side of the rotating disk body 10, the recessed section 132 is made to abut on the groove 131, it can be ensured that the interface formed at the connection between the groove 131 and the oil supply groove 13 is not a sharp corner, which is beneficial for lubricating oil to flow into the oil supply groove 13 from the groove 131, so that the lubricating oil can flow more smoothly in the oil supply groove 13, and the problem of abrasion caused by the formation of the sharp corner at the connection between the groove 131 and the oil supply groove 13 can also be avoided.
In some embodiments of the present invention, as shown in fig. 1, the concave section 132 is configured as an arc section, and is configured to enable the groove 131 to communicate with the oil supply groove 13 through the arc section, so as to effectively ensure that an interface formed at a connection between the groove 131 and the oil supply groove 13 is not a sharp corner, which is more beneficial for lubricating oil to flow from the groove 131 into the oil supply groove 13, and can make the lubricating oil flow in the oil supply groove 13 smoother, and further avoid a problem of wear caused by a sharp corner formed at a connection between the groove 131 and the oil supply groove 13.
As shown in fig. 1 to 5, according to the scroll compressor 300 of the embodiment of the present invention, the scroll compressor 300 includes the fixed scroll 100 of the above embodiment, and the oil supply groove 13 having a closed ring shape is provided, so that a lubrication effect of the whole region between the movable scroll 200 and the fixed scroll 100 is achieved, thereby preventing dry friction from occurring on the contact end surfaces of the movable scroll 200 and the fixed scroll 100, reducing the frictional force between the movable scroll 200 and the fixed scroll 100, and improving the working performance of the scroll compressor 300. And, after the lubricating oil flows into the oil supply groove 13 through the oil outlet 20, the closed annular oil supply groove 13 realizes the bidirectional oil supply of the lubricating oil, so as to ensure that the lubricating oil is provided in the whole area between the movable scroll 200 and the fixed scroll 100 in the circumferential direction, and the lubricating oil in the oil supply groove 13 separates the working medium compression cavity 112 from the back pressure cavity 21, thereby realizing the omnibearing sealing between the working medium compression cavity 112 and the back pressure cavity 21, avoiding the back pressure from leaking into the working medium compression cavity 112 through the gap between the contact end surfaces of the movable scroll 200 and the fixed scroll 100, preventing the power of the scroll compressor 300 from increasing due to the repeated compression of the working medium, and achieving the purpose of improving the performance of the scroll compressor 300.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A fixed scroll for use in a scroll compressor, comprising:
the rotary disc comprises a rotary disc body, wherein the rotary disc body defines a working medium flow groove with one open end;
the vortex teeth are arranged in the working medium flowing grooves to form vortex cavities;
and the oil supply groove is arranged on the rotary disc body and surrounds the opened end of the working medium flow groove, and the oil supply groove is suitable for being communicated with an oil outlet hole of a movable vortex disc of the vortex compressor.
2. The fixed scroll applied to a scroll compressor as claimed in claim 1, wherein an inner side wall of the oil supply groove is spaced apart from the working medium flow groove in a radial direction of the fixed scroll.
3. The fixed scroll applied to a scroll compressor of claim 2, wherein a distance between an inner sidewall of the oil supply groove and the working medium flow groove is a, and satisfies a relation: a is more than or equal to 1 mm.
4. The fixed scroll applied to a scroll compressor as claimed in claim 1, wherein the open end of the oil supply groove is adapted to be covered by the orbiting scroll.
5. The fixed scroll applied to a scroll compressor as claimed in claim 1, wherein the oil supply groove has a width dimension B satisfying a relation: b is more than or equal to 1.2mm and less than or equal to 2 mm.
6. The fixed scroll applied to a scroll compressor as claimed in claim 1, wherein the oil supply groove has a depth dimension C satisfying a relation: c is more than or equal to 0.5mm and less than or equal to 1.8 mm.
7. The fixed scroll applied to a scroll compressor according to any one of claims 1 to 6, wherein an inner side wall of the oil supply groove has a groove recessed toward the inside of the scroll body in a radial direction of the fixed scroll, the groove being adapted to communicate with the oil outlet hole.
8. The fixed scroll applied to a scroll compressor as claimed in claim 7, wherein the groove is configured as an arc-shaped groove.
9. The fixed scroll applied to a scroll compressor as claimed in claim 7, wherein the oil supply groove has a recessed section recessed toward a radially inner side of the scroll body, the recessed section being contiguous with the groove.
10. The fixed scroll applied to a scroll compressor as claimed in claim 9, wherein the recessed section is configured as an arc-shaped section.
11. A scroll compressor comprising a fixed scroll as applied to a scroll compressor as claimed in any one of claims 1 to 10.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210471516.9A CN114738273A (en) | 2022-04-28 | 2022-04-28 | Static scroll plate applied to scroll compressor and scroll compressor |
| EP23762130.5A EP4290077A4 (en) | 2022-04-28 | 2023-04-04 | Fixed scroll applied to scroll compressor, and scroll compressor |
| PCT/CN2023/086304 WO2023207536A1 (en) | 2022-04-28 | 2023-04-04 | Fixed scroll applied to scroll compressor, and scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210471516.9A CN114738273A (en) | 2022-04-28 | 2022-04-28 | Static scroll plate applied to scroll compressor and scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114738273A true CN114738273A (en) | 2022-07-12 |
Family
ID=82286290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210471516.9A Pending CN114738273A (en) | 2022-04-28 | 2022-04-28 | Static scroll plate applied to scroll compressor and scroll compressor |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4290077A4 (en) |
| CN (1) | CN114738273A (en) |
| WO (1) | WO2023207536A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023207536A1 (en) * | 2022-04-28 | 2023-11-02 | 广东美芝制冷设备有限公司 | Fixed scroll applied to scroll compressor, and scroll compressor |
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| CN113446215A (en) * | 2021-08-13 | 2021-09-28 | 上海松芝酷能汽车技术有限公司 | Vortex disc assembly and vortex compressor |
| CN113494459A (en) * | 2021-08-27 | 2021-10-12 | 广东美的环境科技有限公司 | Compression assembly and scroll compressor |
| CN113864185A (en) * | 2021-10-28 | 2021-12-31 | 广东美的环境科技有限公司 | Scroll compressor having a plurality of scroll members |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10519954B2 (en) * | 2017-05-24 | 2019-12-31 | Emerson Climate Technologies, Inc. | Compressor with oil management system |
| JP6755428B1 (en) * | 2020-06-08 | 2020-09-16 | 日立ジョンソンコントロールズ空調株式会社 | Scroll compressor and refrigeration cycle equipment |
| CN113775523A (en) * | 2021-10-14 | 2021-12-10 | 广东美的环境科技有限公司 | Scroll compressor and refrigeration equipment with same |
| CN114738273A (en) * | 2022-04-28 | 2022-07-12 | 广东美芝制冷设备有限公司 | Static scroll plate applied to scroll compressor and scroll compressor |
-
2022
- 2022-04-28 CN CN202210471516.9A patent/CN114738273A/en active Pending
-
2023
- 2023-04-04 WO PCT/CN2023/086304 patent/WO2023207536A1/en unknown
- 2023-04-04 EP EP23762130.5A patent/EP4290077A4/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1342247A (en) * | 1999-11-22 | 2002-03-27 | 大金工业株式会社 | Scroll type compressor |
| CN1592820A (en) * | 2002-05-16 | 2005-03-09 | 大金工业株式会社 | Scroll-type compressor |
| CN203730313U (en) * | 2013-03-18 | 2014-07-23 | 大金工业株式会社 | Scroll compressor |
| CN110966186A (en) * | 2019-12-26 | 2020-04-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and air conditioner with same |
| CN113446215A (en) * | 2021-08-13 | 2021-09-28 | 上海松芝酷能汽车技术有限公司 | Vortex disc assembly and vortex compressor |
| CN113494459A (en) * | 2021-08-27 | 2021-10-12 | 广东美的环境科技有限公司 | Compression assembly and scroll compressor |
| CN113864185A (en) * | 2021-10-28 | 2021-12-31 | 广东美的环境科技有限公司 | Scroll compressor having a plurality of scroll members |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023207536A1 (en) * | 2022-04-28 | 2023-11-02 | 广东美芝制冷设备有限公司 | Fixed scroll applied to scroll compressor, and scroll compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4290077A4 (en) | 2024-08-21 |
| EP4290077A1 (en) | 2023-12-13 |
| WO2023207536A1 (en) | 2023-11-02 |
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Application publication date: 20220712 |