CN215213913U - Oil pumping structure, compressor and refrigerator - Google Patents
Oil pumping structure, compressor and refrigerator Download PDFInfo
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- CN215213913U CN215213913U CN202120990406.4U CN202120990406U CN215213913U CN 215213913 U CN215213913 U CN 215213913U CN 202120990406 U CN202120990406 U CN 202120990406U CN 215213913 U CN215213913 U CN 215213913U
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Abstract
The utility model discloses an oil pumping structure, compressor and refrigerator. The oil pumping structure comprises a crankshaft, a spiral oil pump piece and a fixing piece; the crankshaft is provided with a central oil hole; one end of the spiral oil pump piece extends into the oil pool, and the other end of the spiral oil pump piece extends into the central oil hole; the spiral oil pump piece is in clearance fit with the central oil hole; the fixing piece is fixedly connected with the spiral oil pump piece and the compressor. The utility model discloses technical scheme pump oil structure has guaranteed the stability of spiral oil pump spare pump oil, and the pump oil mass is more in the unit interval, has improved the pump oil ability to suitable running frequency is lower, can satisfy the frequency conversion compressor low frequency operation requirement, has sufficient lubricating oil to supply with the moving part of compressor when ensureing the low frequency operation.
Description
Technical Field
The utility model relates to a compressor technical field, in particular to pump oily structure, compressor and refrigerator.
Background
For the refrigeration compressor, the oil pumping structure is mainly responsible for lubricating all moving parts of the compressor, reducing the abrasion of all parts during operation and simultaneously reducing the working temperature of the compressor so as to achieve the purposes of improving the reliability of the compressor and prolonging the service life of the compressor.
Along with the upgrading of the energy efficiency of the refrigerator, the demand of the high-energy-efficiency refrigerator on the high-efficiency variable-frequency compressor is increased day by day, and the high-efficiency and wide-frequency development of the variable-frequency refrigerator compressor is promoted. The oil pumping structure of the traditional constant-speed compressor can meet the requirement of oil supply quantity of the compressor at 50/60Hz, but when the frequency is below 20Hz, the oil in the central oil hole is low under the action of centrifugal force due to the low rotating speed of the crankshaft, so that the oil pumping capacity is remarkably reduced, even the oil cannot be pumped, the oil pumping capacity is insufficient, and the problem of abrasion of moving parts of a mechanical part is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an oil pumping structure aims at solving the inside oil pumping ability of compressor and is not enough and lead to the technical problem of moving part wearing and tearing.
In order to achieve the purpose, the oil pumping structure provided by the utility model comprises a crankshaft, a spiral oil pump piece and a fixing piece; the crankshaft is provided with a central oil hole; one end of the spiral oil pump piece extends into the oil pool, and the other end of the spiral oil pump piece extends into the central oil hole; the spiral oil pump piece is in clearance fit with the central oil hole; the fixing piece is fixedly connected with the spiral oil pump piece and the compressor.
The utility model discloses an in the embodiment, spiral oil pump spare with the fit clearance S of center oilhole satisfies: s is more than or equal to 0.1mm and less than or equal to 0.5 mm.
In an embodiment of the present invention, the hole wall roughness a of the central oil hole is not greater than rz6.3.
The utility model discloses an in the embodiment, spiral oil pump spare stretches into the degree of depth H of center oilhole satisfies: h is more than or equal to 30mm and less than or equal to 33 mm.
In an embodiment of the present invention, the spiral oil pump member has at least two spiral oil grooves extending in the axial direction in the outer periphery thereof.
In an embodiment of the present invention, the pitch P of the spiral oil groove satisfies: p is more than or equal to 13mm and less than or equal to 16 mm;
and/or the depth L of the spiral oil groove satisfies the following conditions: l is more than or equal to 1.5mm and less than or equal to 2.0 mm;
and/or, the included angle alpha of the relative both sides wall of spiral oil groove's groove cross-section satisfies: alpha is more than or equal to 120 degrees and less than or equal to 140 degrees.
The utility model relates to an embodiment, the spiral oil pump spare deviates from the one end of bent axle is equipped with the mounting hole, the mounting wear to establish install in the mounting hole.
In an embodiment of the present invention, the fixing member includes:
the elastic arm penetrates through the mounting hole; and
and the two clamping hooks are respectively arranged at two opposite ends of the elastic arm and are respectively clamped with the compressor.
In an embodiment of the present invention, the crankshaft includes:
the central oil hole is formed in the main shaft; the side wall of the main shaft is provided with an oil outlet hole and an oil passing groove, the oil outlet hole is communicated with the central oil hole, and the oil passing groove is communicated with the oil outlet hole; and
the auxiliary shaft is eccentrically arranged at the upper end of the main shaft; an oil outlet channel is arranged in the auxiliary shaft and communicated with the end part, far away from the oil outlet hole, of the oil passing groove.
In an embodiment of the present invention, the oil passing groove is spirally formed in the outer peripheral wall of the main shaft.
In order to achieve the above object, the present invention further provides a compressor, which includes a housing and the above oil pumping structure; an oil pool is arranged in the shell, one end of the spiral oil pump piece extends into the oil pool, and the other end of the spiral oil pump piece extends into the central oil hole.
The present invention provides an embodiment, the compressor further comprises a crankcase, a rotor component and a stator component, the crankcase, the rotor component and the stator component are disposed on the housing, the crankshaft is rotatably fitted to the crankcase, the rotor component is fixedly mounted on the crankshaft, and the stator component is fixedly mounted on the crankcase.
In an embodiment of the present invention, an insulating frame is disposed in the stator component, and the insulating frame has two fastening holes; the fixing piece comprises an elastic arm and two clamping hooks arranged at two ends of the elastic arm, the elastic arm is connected with the spiral oil pump, and the two clamping hooks are respectively buckled in the two clamping holes.
In order to achieve the above object, the present invention further provides a refrigerator, including the above compressor. The compressor comprises a shell and the oil pumping structure; an oil pool is arranged in the shell, one end of the spiral oil pump piece extends into the oil pool, and the other end of the spiral oil pump piece extends into the central oil hole.
The utility model discloses among the technical scheme pump oil structure, during the oil bath through stretching into the compressor with the one end of spiral oil pump spare, the other end stretches into in the central oilhole of bent axle, and spiral oil pump spare and central oilhole clearance fit, make when the compressor operation, when the bent axle is rotatory, oil in the oil bath can carry to the certain degree of depth in the bent axle through the clearance between spiral oil groove on the spiral oil pump spare and the central oilhole, then carry other parts department to the compressor through oilhole or oil passage, in order to reach lubricated purpose. The fixing part fixedly connected with the spiral oil pump piece and the compressor is further arranged in the oil pumping structure, so that the spiral oil pump piece is in a fixed position, the spiral oil pump piece is prevented from being deviated and collided with the crankshaft in a contact mode, meanwhile, when the crankshaft rotates, the spiral oil pump piece cannot rotate along with the spiral oil pump piece, and the stability of oil pumping of the spiral oil pump piece is guaranteed. When the compressor operates at low frequency and the rotating speed of the crankshaft is low, oil between the central oil hole and the spiral oil pump piece can flow to a certain depth from the spiral oil groove on the spiral oil pump piece through extrusion, so that the oil pumping amount in unit time is more, the oil pumping capacity is improved, the low-frequency operation requirement of the variable-frequency compressor is met, and sufficient lubricating oil is supplied to the moving part of the compressor during low-frequency operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an assembly schematic diagram of an internal crankcase, a stator component, a rotor component and an oil pumping structure of a compressor according to an embodiment of the invention;
FIG. 2 is an exploded view of the assembly structure of FIG. 1;
FIG. 3 is a schematic view of the assembly of the crankshaft and the spiral oil pump in the embodiment of the present invention;
fig. 4 is a schematic structural view of a crankshaft in an embodiment of the present invention;
FIG. 5 is a schematic view of the assembly of the spiral oil pump and the fixing member according to the embodiment of the present invention;
fig. 6 is a schematic structural view of the spiral oil pump in the embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
300 | |
| 101 | |
310 | |
| 102 | |
320 | |
| 103 | |
400 | |
| 104 | |
500 | |
| 110 | |
600 | |
| 120 | |
610 | |
| 200 | |
611 | Fastening |
| 210 | |
700 | |
| 220 | Mounting hole |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an oil pumping structure is applied to in the compressor, aims at improving the inside oil pumping ability of compressor to with the mechanical motion part department of more lubricating oil pump sending to compressor in the oil bath, reduce the mechanical wear between the motion part, also can reduce the friction noise of compressor simultaneously, prolong the life of compressor.
In the embodiment of the present invention, as shown in fig. 1 to 3, the oil pumping structure includes a crankshaft 100, a spiral oil pumping element 200, and a fixing element 300.
The crankshaft 100 is provided with a central oil hole 101; one end of the spiral oil pump piece 200 extends into an oil pool of the compressor, and the other end of the spiral oil pump piece extends into the central oil hole 101; the spiral oil pump 200 is in clearance fit with the central oil hole 101; the fixing member 300 fixedly connects the screw oil pumping element 200 with the compressor.
The oil pumping structure is applied to a compressor, in the operation process of the compressor, a crankshaft 100 rotates inside the compressor, and a central oil hole 101 of the crankshaft 100 penetrates through one end, close to an oil pool, of the crankshaft 100, so that in the rotation process of the crankshaft 100, oil in the oil pool can be conveyed to an area, far away from the oil pool, of the crankshaft 100 through the central oil hole 101. In this embodiment, one end of the spiral oil pump 200 extends into the oil sump of the compressor, the other end extends into the central oil hole 101 of the crankshaft 100, and the spiral oil pump 200 is in clearance fit with the central oil hole 101, so that when the crankshaft 100 rotates, the lubricating oil can enter the central oil hole 101 from the clearance between the spiral oil pump 200 and the central oil hole 101, and when the lubricating oil is pumped to a certain depth in the central oil hole 101, the lubricating oil is conveyed to other parts of the compressor through the oil outlet hole opened in the crankshaft 100 to lubricate the moving parts.
On this basis, this oil pumping structure still includes mounting 300, this mounting 300 is used for with spiral oil pump spare 200 and compressor fixed connection, make when bent axle 100 is rotatory, spiral oil pump spare 200 can not rotate along with bent axle 100 together, thereby avoid disturbing the inside oil in compressor oil sump, make the inside liquid level in oil sump stable, the stable contact of the oil in spiral oil pump spare 200 and the oil sump has been guaranteed, thereby guaranteed the pumping effect of spiral oil pump spare 200 to oil, the ability of pumping oil has been strengthened. Of course, the spiral oil pump piece 200 is fixed through the fixing piece 300, so that the spiral oil pump piece 200 is located at a fixed position and is not easy to generate cheapness, the clearance fit between the spiral oil pump piece 200 and the central oil hole 101 is ensured, the contact collision in the running process of the compressor is avoided, and the power consumption of the compressor is reduced.
It is understood that the specific structural form of the spiral oil pump element 200 may be determined according to actual conditions, such as a cylindrical structure or a different-shape structure with a spiral oil groove formed on the outer wall, or a spiral groove structure. Regardless of the spiral structure, the spiral oil pump 200 is in clearance fit with the central oil hole 101, and the oil in the oil pool can be delivered from the spiral oil groove on the spiral oil pump 200 or from the clearance between the spiral oil pump 200 and the central oil hole 101. In practical applications, the cross-sectional shape of the spiral oil groove formed on the spiral oil pumping element 200 may be a triangle, a trapezoid, a U-shape, or a circular arc.
In the practical application process, the spiral oil pump piece 200 is made of a high polymer material through injection molding, so that the quality of the spiral oil pump piece 200 is reduced, and meanwhile, the production cost is saved. Alternatively, the screw oil pump member 200 may employ a PBT (polybutylene terephthalate) material or a PET (Polyethylene terephthalate) material or the like.
Alternatively, the cross-sectional shape of the central oil hole 101 in the crankshaft 100 may be a circle, a triangle, a square, or other shapes, and the specific shape thereof may not be particularly limited. In practical application, the crankshaft 100 is vertically arranged, the oil sump is arranged below the crankshaft 100, the central oil hole 101 is located in the lower portion area of the crankshaft 100 and penetrates through the lower end face of the crankshaft 100, and the spiral oil pump 200 penetrates through the lower end face of the crankshaft 100 and extends into the oil sump below to convey oil in the oil sump to the middle upper portion of the crankshaft 100 from bottom to top and then convey the oil to other positions of the compressor through the oil hole or the oil passage.
The specific structure of the fixing member 300 may also be determined according to the actual situation, such as a cantilever structure, an elastic clamp spring structure, or a rigid fixing seat structure. The fixing member 300 and the spiral oil pump member 200 may be connected by a snap connection, a screw connection, or a shaft hole connection, etc.; similarly, the fixing member 300 may be fixed to the compressor by a snap connection, a screw connection, or a shaft hole connection, and the fixing member 300 may be fixed to a fixing member in the compressor, such as a stator member, a housing, or a crankcase, to ensure the positional reliability of the oil pump assembly 200.
The utility model discloses among the technical scheme pump oil structure, in stretching into the oil bath of compressor through the one end with spiral oil pump piece 200, the other end stretches into in the central oilhole 101 of bent axle 100, and spiral oil pump piece 200 and central oilhole 101 clearance fit, make when the compressor operation, when bent axle 100 is rotatory, oil in the oil bath can carry to bent axle 100 interior certain degree of depth through the clearance between spiral oil groove on spiral oil pump piece 200 and the central oilhole 101, then carry other parts department to the compressor through oilhole or oil passage, in order to reach lubricated purpose. Still be equipped with the mounting 300 of fixed connection spiral oil pump spare 200 and compressor in this pump oil structure to make spiral oil pump spare 200 be in fixed position, avoid spiral oil pump spare 200 to take place the skew and collide with crankshaft 100 contact, simultaneously when crankshaft 100 is rotatory, spiral oil pump spare 200 can not rotate thereupon, has guaranteed the stability of spiral oil pump spare 200 pump oil. When the compressor operates at low frequency and the rotating speed of the crankshaft 100 is low, oil between the central oil hole 101 and the spiral oil pump piece 200 can be extruded to flow to a certain depth from the spiral oil groove on the spiral oil pump piece 200, so that the oil pumping capacity in unit time is increased, the requirement of low-frequency operation of the variable-frequency compressor is met, and sufficient lubricating oil is supplied to moving parts of the compressor during low-frequency operation.
In an embodiment of the present invention, referring to fig. 1 to 4, the fit clearance S between the spiral oil pump 200 and the central oil hole 101 satisfies: s is more than or equal to 0.1mm and less than or equal to 0.5 mm.
It can be understood that the gap between the screw pump 200 and the central oil hole 101 cannot be too large or too small, and if it is too large, a good differential pressure pumping effect cannot be obtained when the crankshaft 100 rotates, and if it is too small, the screw pump 200 is liable to collide and rub with the crankshaft 100. In this embodiment, experimental studies have shown that the oil pumping capability of the screw pump 200 can be improved when the clearance between the outer peripheral wall of the screw pump 200 and the hole wall of the center oil hole 101 is controlled to be 0.1mm to 0.5 mm. Further, when the fit clearance S between the two is set to 0.15mm to 0.4mm, the oil pumping effect is relatively good, such as 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm or 0.4 mm.
It should be noted that the size of the gap between the spiral oil pump 200 and the central oil hole 101 is not limited to the above range, and the size of the gap may be selected according to the actual sizes of the crankshaft 100 and the central oil hole 101 of the compressor, for example, although the crankshaft 100 of the compressor is generally cylindrical, the size does not represent that the central oil hole 101 is necessarily a circular hole, when the shape of the central oil hole 101 is different, the range of the gap between the spiral oil pump 200 and the central oil hole 101 may also be different, and the size may be selected according to actual needs.
In order to further improve the oil pumping capability, referring to fig. 1 to 4, in an embodiment of the present invention, the hole wall roughness a of the central oil hole 101 is not greater than rz6.3.
In the embodiment, the roughness of the hole wall of the central oil hole 101 is controlled within Rz6.3, so that friction is reduced, resistance in the oil conveying process is reduced, and the oil pumping efficiency is further improved.
It is understood that the roughness a of the pore walls is not greater than rz6.3, such as rz6.3, rz3.2, rz1.6, or rz1.8.
In an embodiment of the present invention, referring to fig. 3 to 6, the depth H of the spiral oil pump 200 extending into the central oil hole 101 satisfies: h is more than or equal to 30mm and less than or equal to 33 mm.
It can be understood that the depth of the spiral oil pump 200 extending into the central oil hole 101 has a great influence on the position of the spiral oil pump 200 capable of pumping oil in the oil pool into the central oil hole 101, and the depth of the spiral oil pump 200 extending into the central oil hole 101 cannot be too long or too short, so that the structural instability of the spiral oil pump 200 is easily caused, and the good oil pumping effect cannot be achieved due to the too short depth. In this embodiment, when the depth H is controlled within a range of 30mm to 33mm, the oil pumping effect of the screw oil pumping element 200 in cooperation with the crankshaft 100 is good. Alternatively, the depth H may be 30mm, 30.5mm, 31mm, 31.5mm, 32mm, 32.5mm, or 33 mm.
In order to further improve the oil pumping capacity of the oil pumping screw 200, referring to fig. 3 to 6, in an embodiment of the present invention, the outer circumference of the oil pumping screw 200 has at least two axially extending oil grooves 210.
It can be understood that, set up the oil pump spare that the outer wall exists the oil groove inside central oilhole 101, compare the scheme that does not set up oil pump spare in central oilhole 101, promoted certain pump oil ability, furtherly, when the periphery of spiral oil pump spare 200 set up along axial extension's spiral oil groove 210, compare in other shapes and have the oil groove, pump oil ability is better. In this embodiment, the periphery of the spiral oil pump 200 has at least two spiral oil grooves 210 extending axially, so as to further improve the oil pumping capacity and ensure better lubrication effect of the compressor.
Optionally, the spiral directions of the different spiral oil grooves 210 on the periphery of the spiral oil pumping element 200 may be consistent or inconsistent, and two adjacent spiral oil grooves 210 are arranged at intervals, so that the oil pumping channel is increased, and the oil pumping efficiency is improved.
In an embodiment of the present invention, referring to fig. 3 to 6, the pitch P of the spiral oil groove 210 satisfies: p is more than or equal to 13mm and less than or equal to 16 mm. It can be understood that the pitch P of the spiral oil groove 210 cannot be too large or too small, if the pitch P is too large, the oil guiding amplitude of the spiral oil groove 210 is large, the oil pumping capability may be insufficient, and if the pitch P is too small, the path of the spiral oil groove 210 is long, which is easy to cause large oil resistance. In this embodiment, it is found through experiments that the screw pitch P of the spiral oil groove 210 is set in the range from 13mm to 16mm, so that the oil pumping effect is better. Alternatively, the pitch P may be 13mm, 14mm, 15mm, 16mm, or the like.
In an embodiment of the present invention, the depth L of the spiral oil groove 210 satisfies: l is more than or equal to 1.5mm and less than or equal to 2.0 mm. It can be understood that the depth L of the oil groove 210 can directly affect the oil pumping capability, and experiments show that when the depth L is in the range of 1.5mm to 2.0mm, the oil pumping capability is better, and the lubricating effect of the compressor can be ensured. Alternatively, the depth L of the spiral oil groove 210 may be selected to be 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, or the like.
In an embodiment of the present invention, the included angle α between the two opposite side walls of the groove cross section of the spiral oil groove 210 satisfies: alpha is more than or equal to 120 degrees and less than or equal to 140 degrees. It can be understood that, the shape structure of spiral oil groove 210's groove cross-section can be decided according to actual conditions, lead oily effect in order to improve, reduce the oil resistance, spiral oil groove 210's groove cross-section can be selected for trapezoidally, its relative both sides wall is the contained angle setting, its contained angle alpha can not the undersize also can not be too big, the undersize if, it is less to cross oily area, increase the resistance easily, too big if, spiral oil groove 210 shape is too gentle, can not reach good pump oil effect. In the embodiment, the included angle alpha of the two opposite side walls is set within the range of 120-140 degrees, so that the oil pumping effect is better, and the lubricating capacity of the compressor is improved.
In order to make the position of the spiral oil pump 200 more stable, referring to fig. 1 to 6, in an embodiment of the present invention, an end of the spiral oil pump 200 away from the crankshaft 100 is provided with a mounting hole 220, and the fixing member 300 is installed in the mounting hole 220 in a penetrating manner.
In the foregoing embodiment, one end of the spiral oil pump 200 extends into the central oil hole 101 of the crankshaft 100, and the other end extends into the oil pool, it can be understood that the mounting hole 220 is located at one end of the spiral oil pump 200 extending into the oil pool, and the fixing member 300 penetrates through the mounting hole 220 to fix the spiral oil pump 200 and the compressor, thereby ensuring that the spiral oil pump 200 is maintained at a fixed position.
In this embodiment, the mounting hole 220 is located at an end of the spiral oil pump 200 away from the crankshaft 100, and the connection portion between the fixing member 300 and the spiral oil pump 200 is located outside the crankshaft 100, so that the structure does not interfere with the rotation of the crankshaft 100 and the rotation of the central oil hole 101, and the reliability of the overall structure is ensured.
In the practical application process, the connection manner of the fixing member 300 passing through the mounting hole 220 may be determined according to the practical situation, such as screw-thread fit, interference fit or clearance fit.
In one embodiment, the fixing member 300 includes a resilient arm 310 and two hooks 320; the elastic arm 310 is arranged through the mounting hole 220; the two hooks 320 are respectively disposed at two opposite ends of the elastic arm 310, and the two hooks 320 are respectively engaged with the compressor.
It can be understood that the fixing member 300 is equivalent to an elastic snap spring, the elastic arm 310 penetrates through the mounting hole 220 to play a role in supporting and fixing, the two ends of the elastic arm 310 are respectively provided with the hooks 320, and the fixing member 300 is clamped with the compressor through the hooks 320 to realize the function of fixedly connecting the spiral oil pump member 200 with the compressor.
In the practical application process, in order to further improve the stability of the connection structure, the two hooks 320 can be symmetrically arranged relative to the central axis of the spiral oil pump 200, at this time, the mounting hole 220 is located at the central position of the elastic arm 310, and the hooks 320 on the two sides are stressed in a balanced manner, so that the stress on the two sides of the elastic arm 310 is balanced, and the reliability of the whole connection structure is improved.
In an embodiment of the present invention, referring to fig. 3 to 6, the crankshaft 100 includes a main shaft 110 and a sub shaft 120;
the central oil hole 101 is arranged in the main shaft 110; the side wall of the main shaft 110 is provided with an oil outlet hole 102 and an oil passing groove 103, the oil outlet hole 102 is communicated with the central oil hole 101, and the oil passing groove 103 is communicated with the oil outlet hole 102;
the auxiliary shaft 120 is eccentrically arranged at the upper end of the main shaft 110; an oil outlet channel 104 is arranged in the auxiliary shaft 120, and the oil outlet channel 104 is communicated with the end part of the oil passing groove 103 far away from the oil outlet hole 102.
In practical application, the main shaft 110 is a part connected to an inner rotor part of the compressor, the auxiliary shaft 120 is an eccentric shaft disposed in the crankcase, and the rotor part drives the main shaft 110 to rotate, thereby driving the eccentric auxiliary shaft 120 to perform compression motion in the crankcase. In this embodiment, the central oil hole 101 is disposed at one end of the main shaft 110 away from the auxiliary shaft 120, and the oil outlet hole 102 and the oil passing groove 103 are disposed on the side wall of the main shaft 110, so that oil in the oil pool rises to a certain height through the spiral oil groove 210 of the spiral oil pump 200 and the gap between the spiral oil pump 200 and the central oil hole 101, and then flows from the central oil hole 101 to the outer wall of the main shaft 110 through the oil outlet hole 102, thereby lubricating the moving parts at the main shaft 110. Meanwhile, since the oil passing groove 103 is communicated with the oil outlet hole 102 and the oil outlet passage 104 of the auxiliary shaft 120 is communicated with the oil passing groove 103, the oil coming out of the oil outlet hole 102 can flow into the oil outlet passage 104 through the oil passing groove 103 and flow out to the outer wall of the auxiliary shaft 120 from the oil outlet passage 104 to lubricate the moving parts at the auxiliary shaft 120. This is accomplished by pumping oil from an oil sump below the crankshaft 100 to the upper end of the crankshaft 100 to lubricate more of the moving parts.
In order to further enhance the oil pumping effect, in an embodiment, the oil passing groove 103 is spirally provided on the outer circumferential wall of the main shaft 110. In this embodiment, the oil from the oil outlet hole 102 is delivered upward to the oil outlet passage 104 via the spiral oil passing groove 103, so that the coverage area of the lubricating oil on the outer peripheral wall of the main shaft 100 is increased, and the lubricating effect of the outer wall of the main shaft 100 and other parts is increased.
Optionally, the main shaft 110 is a cylinder, and the outer diameter D of the main shaft 110 satisfies: d is more than or equal to 13mm and less than or equal to 14 mm. It can be understood that the larger the outer diameter D of the main shaft 110 is, the less the mass of the whole compressor is, and the outer diameter of the main shaft 110 in the present application is set between 13mm and 14mm, so that the lightweight design of the compressor is realized, and meanwhile, the rigidity and the strength of the crankshaft 100 can be ensured, and the reliability of the compressor can be ensured.
The utility model discloses still provide a compressor, refer to fig. 1 and fig. 2, this compressor includes casing and pump oil structure, and the concrete structure of this pump oil structure refers to above-mentioned embodiment, because this compressor has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. Wherein, the casing is provided with an oil pool, one end of the spiral oil pump piece 200 extends into the oil pool, and the other end extends into the central oil hole 101.
The compressor in this embodiment has aforementioned pump oil structure, has realized better lubricated effect, has promoted the work efficiency and the reliability of compressor, has prolonged life simultaneously.
In one embodiment, the compressor further includes a crankcase 400 disposed in the housing, a rotor member 500, and a stator member 600, the crankshaft 100 is rotatably engaged with the crankcase 400, the rotor member 500 is fixedly mounted to the crankshaft 100, and the stator member 600 is fixedly mounted to the crankcase 400.
The stator component 600 is fixedly mounted on the crankcase 400 through a stator screw 700, a space for accommodating the rotor component 500 is formed inside the stator component 600, one end of the crankshaft 100 is inserted into the crankcase 400 and is in running fit with the crankcase 400, the other end of the crankshaft 100 penetrates through the rotor component 500 and then extends into an oil sump, the rotor component 500 is fixedly connected with the crankshaft 100, the crankshaft 100 can be driven to rotate when the rotor component 500 rotates, and then the rotor component and the spiral oil pump 200 arranged inside the central oil hole 101 form relative motion, under the rotating action of the crankshaft 100, oil in the oil sump can be conveyed to each moving component of the compressor through a gap between the spiral oil pump 200 and the hole wall of the central oil hole 101, and the lubricating purpose is achieved.
In one embodiment, an insulating frame 610 is disposed in the stator assembly 600, and the insulating frame 610 has two fastening holes 611; the fixing member 300 includes an elastic arm 310 and two hooks 320 disposed at two ends of the elastic arm 310, the elastic arm 310 is connected to the spiral oil pump 200, and the two hooks 320 are respectively fastened in the two fastening holes 611.
It can be appreciated that the insulating frame 610 in the stator component 600 is a plastic component, and the two clamping holes 611 can be formed through an injection molding process, which simplifies the process. The end of the spiral oil pump 200 is provided with a mounting hole 220, after the elastic arm 310 is mounted in the mounting hole 220, the hooks 320 at two sides of the elastic arm 310 are inserted into two clamping holes 611 of the insulating frame 610, so as to complete the fixing process of the spiral oil pump 200. In this embodiment, the detachable connection manner of the hook 320 and the locking hole 611 is utilized to improve the dismounting efficiency of the spiral oil pump 200, thereby achieving the purpose of facilitating maintenance.
The utility model discloses still provide a refrigerator, this refrigerator includes the compressor, and the concrete structure of this compressor refers to above-mentioned embodiment, because this refrigerator has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (14)
1. The utility model provides an oil pumping structure is applied to the compressor, be equipped with the oil bath in the compressor, its characterized in that, oil pumping structure includes:
the crankshaft is provided with a central oil hole;
one end of the spiral oil pump piece extends into the oil pool, and the other end of the spiral oil pump piece extends into the central oil hole; the spiral oil pump piece is in clearance fit with the central oil hole; and
the fixing piece is fixedly connected with the spiral oil pump piece and the compressor.
2. The oil pumping structure according to claim 1, wherein a fitting clearance S of the spiral oil pumping element and the center oil hole satisfies: s is more than or equal to 0.1mm and less than or equal to 0.5 mm.
3. The oil pumping structure according to claim 1, wherein the hole wall roughness a of the center oil hole is not more than rz6.3.
4. The oil pumping structure according to claim 1, wherein the spiral oil pumping element extends into the central oil hole by a depth H that satisfies: h is more than or equal to 30mm and less than or equal to 33 mm.
5. The oil pumping structure according to any one of claims 1 to 4, wherein the outer periphery of the spiral oil pumping element has at least two axially extending spiral oil grooves.
6. The oil pumping structure according to claim 5, wherein a pitch P of the spiral oil groove satisfies: p is more than or equal to 13mm and less than or equal to 16 mm;
and/or the depth L of the spiral oil groove satisfies the following conditions: l is more than or equal to 1.5mm and less than or equal to 2.0 mm;
and/or, the included angle alpha of the relative both sides wall of spiral oil groove's groove cross-section satisfies: alpha is more than or equal to 120 degrees and less than or equal to 140 degrees.
7. The oil pumping structure according to any one of claims 1 to 4, wherein a mounting hole is formed at an end of the spiral oil pumping element facing away from the crankshaft, and the fixing element is installed in the mounting hole in a penetrating manner.
8. The oil pumping structure of claim 7, wherein the fixing member comprises:
the elastic arm penetrates through the mounting hole; and
and the two clamping hooks are respectively arranged at two opposite ends of the elastic arm and are respectively clamped with the compressor.
9. The oil pumping structure according to any one of claims 1 to 4, wherein the crankshaft comprises:
the central oil hole is formed in the main shaft; the side wall of the main shaft is provided with an oil outlet hole and an oil passing groove, the oil outlet hole is communicated with the central oil hole, and the oil passing groove is communicated with the oil outlet hole; and
the auxiliary shaft is eccentrically arranged at the upper end of the main shaft; an oil outlet channel is arranged in the auxiliary shaft and communicated with the end part, far away from the oil outlet hole, of the oil passing groove.
10. The oil pumping structure of claim 9, wherein the oil passing groove is spirally formed in the outer circumferential wall of the main shaft.
11. A compressor, characterized by comprising a housing and the oil pumping structure according to any one of claims 1 to 10; an oil pool is arranged in the shell, one end of the spiral oil pump piece extends into the oil pool, and the other end of the spiral oil pump piece extends into the central oil hole.
12. A compressor according to claim 11, further comprising a crankcase, a rotor member, and a stator member provided to the housing;
the crankshaft is in running fit with the crankcase, the rotor component is fixedly mounted on the crankshaft, and the stator component is fixedly mounted on the crankcase.
13. The compressor of claim 12, wherein an insulating frame is provided in the stator part, the insulating frame being provided with two chucking holes;
the fixing piece comprises an elastic arm and two clamping hooks arranged at two ends of the elastic arm, the elastic arm is connected with the spiral oil pump, and the two clamping hooks are respectively buckled in the two clamping holes.
14. A refrigerator characterized by comprising a compressor according to any one of claims 11 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120990406.4U CN215213913U (en) | 2021-05-10 | 2021-05-10 | Oil pumping structure, compressor and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120990406.4U CN215213913U (en) | 2021-05-10 | 2021-05-10 | Oil pumping structure, compressor and refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN215213913U true CN215213913U (en) | 2021-12-17 |
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| CN202120990406.4U Active CN215213913U (en) | 2021-05-10 | 2021-05-10 | Oil pumping structure, compressor and refrigerator |
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| CN (1) | CN215213913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856972A (en) * | 2022-06-01 | 2022-08-05 | 珠海格力电器股份有限公司 | A kind of compressor |
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2021
- 2021-05-10 CN CN202120990406.4U patent/CN215213913U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856972A (en) * | 2022-06-01 | 2022-08-05 | 珠海格力电器股份有限公司 | A kind of compressor |
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