CN106468264B - Screw compressor and its pump assembly - Google Patents
Screw compressor and its pump assembly Download PDFInfo
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- CN106468264B CN106468264B CN201510508081.0A CN201510508081A CN106468264B CN 106468264 B CN106468264 B CN 106468264B CN 201510508081 A CN201510508081 A CN 201510508081A CN 106468264 B CN106468264 B CN 106468264B
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Abstract
The invention discloses a kind of screw compressor and its pump assembly, pump assembly includes crankshaft (9) and the upper bracket (5) for supporting crankshaft (9), is provided with crankshaft oil hole (9b) in crankshaft (9)；Along the radial oil circuit of crankshaft (9) being arranged radially, the oil sump (5a) of radial oil communication crankshaft oil hole (9b) and upper bracket (5)；For blocking the current-limiting valve core (16) of radial oil circuit, current-limiting valve core (16) along crankshaft (9) be arranged radially and its big end is located at close to the side of crankshaft oil hole (9b), the pipeline section diameter of the radial oil circuit where current-limiting valve core (16) is less than the diameter of current-limiting valve core (16) big end and is greater than the diameter of current-limiting valve core (16) small end；Apply the compressed spring (17) of motive force in radial oil circuit and to crankshaft oil hole (9b).Pump assembly disclosed by the invention, it is ensured that fuel feeding situation makes compressor stable operation.
Description
Technical field
The present invention relates to compression device technical fields, more particularly to a kind of screw compressor and its pump assembly.
Background technique
Screw compressor includes multiple components such as orbiter, fixed scroll, bearing, upper bracket, lower bracket and crankshaft, bent
Axis rotates driven by the motor.Wherein, the components such as bearing, crankshaft and orbiter rotate in shell, need to carry out fuel feeding
Lubrication, sealing and heat dissipation.
Currently, common screw compressor is as pressurization in the crankshaft back end configuration components such as oil pump or oil guide piece for oil machine
Structure makes the lubricating oil of compressor housing bottom by flowing to after oil pump or oil guide piece pressurization through crankshaft oil hole in crank rotation
At the top of crankshaft, it is flow to upper bracket region or back pressure space using the clearance channel between orbiter and crankshaft eccentric portion, is moistened
The sliding friction such as the scroll plate pump housing and bearing is secondary, and most of lubricating oil after lubricating carries heat and is back to compression along way to cycle oil
Machine housing bottom.
Crankshaft is needed to drive oil guide piece for lubricating oil or using oil pump feed, fuel system is mostly related to the revolving speed of crankshaft,
I.e. the speed of crankshaft the high more is able to achieve good fuel feeding.But widening with the range of speeds of compressor, compressor is in low frequency
When the slow-speed of revolution, the crankshaft of the slow-speed of revolution is unable to drive pressurization oil supply mechanism and meets fuel feeding demand, and which results in oil sump internal upper parts to fill
Full gas and the case where lubrication oil circulation amount few even oil starvation.Oil sump cannot fill up lubricating oil, reduce to the mistake oil mass of the pump housing, and
The friction lubricating of bearing and pump parts is bad to generate a large amount of heat, and lubricating oil cannot take away in time frictional heat, dissipate
The case where thermal effect is poor, even will cause bearing high temperature sintering or operating failure when serious, influences the stable operation of compressor.
Therefore, how to ensure fuel feeding situation, make compressor stable operation, be that those skilled in the art need to solve at present
Technical problem.
Summary of the invention
The object of the present invention is to provide a kind of pump assemblies to make compressor stable operation to ensure fuel feeding situation.The present invention
Additionally provide a kind of compressor with above-mentioned pump assembly.
In order to solve the above technical problems, the present invention provides a kind of pump assembly, including crankshaft and the upper of the crankshaft is supported
Bracket is provided with crankshaft oil hole in the crankshaft, further includes：
Along the radial oil circuit of the crankshaft being arranged radially, crankshaft oil hole and the upper branch described in the radial direction oil communication
The oil sump of frame；
For blocking the current-limiting valve core of the radial oil circuit, the current-limiting valve core along the crankshaft be arranged radially and it is big
End is located at the pipeline section diameter close to the radial oil circuit where the side of the crankshaft oil hole, the current-limiting valve core less than described
The diameter of current-limiting valve core big end and the diameter for being greater than the current-limiting valve core small end；
Apply the compressed spring of motive force in the radial oil circuit and to the crankshaft oil hole.
It preferably, further include the balance weight being set in the oil sump of the upper bracket, the balance in above-mentioned pump assembly
Block is sheathed on the outside of the crankshaft；
The radial direction oil circuit includes through the first oilhole and the connection crankshaft oil hole of the balance weight and the crankshaft
Radial direction oil hole.
Preferably, in above-mentioned pump assembly, first oilhole is provided with positioning region far from one end of the crankshaft oil hole
Part, the one end of the compressed spring far from the current-limiting valve core offset with the positioning element.
Preferably, in above-mentioned pump assembly, the positioning element is to seal first oilhole far from the crankshaft oil hole
One end sealing element；
The second oilhole for being connected to the oil sump of first oilhole and the upper bracket is additionally provided on the balance weight.
Preferably, in above-mentioned pump assembly, the axis of first oilhole and the axis of second oilhole are mutually perpendicular to,
Opening up setting of second oilhole far from first oilhole.
Preferably, in above-mentioned pump assembly, the axis arrangement along first oilhole is provided on the positioning element
Through-hole.
Preferably, in above-mentioned pump assembly, the positioning element is screw.
Preferably, in above-mentioned pump assembly, the crankshaft and the balance weight are split type structure.
Preferably, in above-mentioned pump assembly, first oilhole is provided with flow-limiting valve close to one end of the crankshaft oil hole
Core slot, the current-limiting valve core slot are correspondingly arranged with the radial direction oil hole；
The current-limiting valve core is located in the current-limiting valve core slot.
Preferably, in above-mentioned pump assembly, the crankshaft is an integral structure with the balance weight.
Preferably, in above-mentioned pump assembly, the current-limiting valve core includes taper seat portion and is set to the taper valve seat
The bonnet portion of the big end in portion.
Preferably, it in above-mentioned pump assembly, is provided in the taper seat portion for the end with the compressed spring
Limit the annular spacing groove of connection.
The present invention also provides a kind of screw compressors, including pump assembly, which is characterized in that the pump assembly is such as
Pump assembly described in any of the above embodiments.
Pump assembly provided by the invention, crankshaft in low speed rotation, under this revolving speed lubricating oil can not along crankshaft oil hole to
It is flowed out up to the top of crankshaft.Compressed spring pushes current-limiting valve core mobile to crankshaft oil hole direction, i.e., the big end of current-limiting valve core to
Direction far from radial direction oil circuit is mobile；The pipeline section diameter of radial oil circuit as where current-limiting valve core is greater than current-limiting valve core small end
Diameter, so that the inner wall of its outer wall and radial oil circuit has gap after current-limiting valve core is mobile；Rotation lower edge of the lubricating oil in crankshaft
Crankshaft oil hole flows up, and after flowing to the position of radial oil communication crankshaft oil hole, radially oil circuit is flow under the action of the centrifugal
The oil sump of upper bracket avoids the situation of low frequency fuel feeding deficiency in order to be lubricated in crankshaft low speed rotation.
When middling speed rotates, a part of lubricating oil flows crankshaft along the top that crankshaft oil hole is upwardly into crankshaft under this revolving speed
Out, but still it is unable to satisfy fuel feeding demand.A part of lubricating oil in crankshaft oil hole is upwardly into the top of crankshaft along crankshaft oil hole
Outflow, after another part lubricating oil flow to the position of radial oil communication crankshaft oil hole, radially oil circuit stream under the action of the centrifugal
The situation of low frequency fuel feeding deficiency is avoided to the oil sump of upper bracket in order to be lubricated in crankshaft low speed rotation.
When rotating at high speed, the centrifugal force that current-limiting valve core is subject to is larger for crankshaft, until it overcomes compressed spring to apply it
Motive force after to mobile far from crankshaft oil hole direction, i.e. the big end of current-limiting valve core is to mobile close to the direction of radial oil circuit；By
Be less than the diameter of current-limiting valve core big end in the pipeline section diameter of the radial oil circuit where current-limiting valve core so that after current-limiting valve core is mobile its
Outer wall is bonded with the inner wall of radial oil circuit, seals radial oil circuit；Lubricating oil flows up under the rotation of crankshaft along crankshaft oil hole,
Still circulation upwards is flow to behind the position of radial oil communication crankshaft oil hole, until flowing to the oil of upper bracket by the top of crankshaft
Pond, in order to be lubricated when crankshaft high-speed rotates.
Wherein, above-mentioned low speed rotation, middling speed rotation and high speed rotation are only used for distinguishing the oil condition under the speed, specifically
Numerical value is depending on the practical structures of pump assembly.
Pump assembly provided by the invention effectively ensures crankshaft when slowly running to upper bracket by above-mentioned setting
Oil sump fuel feeding the case where, avoid oil sump inner oil shortage and cause the secondary bad situation of friction between each component of pump assembly,
Lubrication and heat dissipation effect are ensured, in order to stable operation of the compressor using the pump assembly under low frequency state.
The present invention also provides a kind of screw compressors with above-mentioned pump assembly, with same technical effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of screw compressor provided by the present invention；
Fig. 2 is the first structural schematic diagram of pump assembly provided by the present invention；
Fig. 3 is the partial enlarged view of part A in Fig. 2；
Fig. 4 is the first structural schematic diagram of crankshaft provided by the present invention and balance weight；
Fig. 5 is the first perspective view of the explosion of crankshaft provided by the present invention and balance weight；
Fig. 6 is the schematic cross-sectional view of balance weight provided by the present invention；
Fig. 7 is the first structural schematic diagram of positioning element provided by the present invention；
Fig. 8 is the structural schematic diagram of current-limiting valve core provided by the present invention；
Fig. 9 is second of structural schematic diagram of pump assembly provided by the present invention；
Figure 10 is the partial enlarged view of part A in Fig. 9；
Figure 11 is second of structural schematic diagram of positioning element provided by the present invention；
Figure 12 is second of structural schematic diagram of crankshaft provided by the present invention and balance weight；
Figure 13 is second of schematic cross-sectional view of crankshaft provided by the present invention and balance weight；
Figure 14 is the third structural schematic diagram of crankshaft provided by the present invention and balance weight；
Figure 15 is the third schematic cross-sectional view of crankshaft provided by the present invention and balance weight.
Specific embodiment
Core of the invention is to provide a kind of pump assembly, to ensure fuel feeding situation, makes compressor stable operation.The present invention
Additionally provide a kind of compressor with above-mentioned pump assembly.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 2 and Fig. 3 are please referred to, Fig. 2 is the first structural schematic diagram of pump assembly provided by the present invention；Fig. 3 is Fig. 2
The partial enlarged view of middle part A.
In this specific embodiment, pump assembly includes crankshaft 9 and the upper bracket 5 for supporting crankshaft 9, is set in crankshaft 9
It is equipped with crankshaft oil hole 9b, further includes radial oil circuit, current-limiting valve core 16 and compressed spring 17.Radial oil circuit is set along the radial direction of crankshaft 9
It sets, also, the oil sump 5a of radial direction oil communication crankshaft oil hole 9b and upper bracket 5.Current-limiting valve core 16 is limited for blocking radial oil circuit
Flow valve core 16 along crankshaft 9 be arranged radially and its big end is located at close to the diameter where the side of crankshaft oil hole 9b, current-limiting valve core 16
It is less than the diameter of 16 big end of current-limiting valve core to the pipeline section diameter of oil circuit and is greater than the diameter of 16 small end of current-limiting valve core；That is, radial oil
Road is connected to crankshaft oil hole 9b, and there are two states for current-limiting valve core 16 and radial oil circuit, and one is current-limiting valve cores 16 to block radial direction
Oil circuit, another kind are that current-limiting valve core 16 does not block radial oil circuit.Compressed spring 17 is set in radial oil circuit, also, to crankshaft
The direction oilhole 9b applies motive force to current-limiting valve core 16.
For crankshaft 9 in low speed rotation, lubricating oil can not be upwardly into the top stream of crankshaft 9 along crankshaft oil hole 9b under this revolving speed
Out.Compressed spring 17 pushes current-limiting valve core 16 mobile to the direction crankshaft oil hole 9b, i.e., the big end of current-limiting valve core 16 is to far from radial
The direction of oil circuit is mobile；Since the pipeline section diameter of the radial oil circuit where current-limiting valve core 16 is greater than the straight of 16 small end of current-limiting valve core
Diameter, so that the inner wall of its outer wall and radial oil circuit has gap after current-limiting valve core 16 is mobile；Rotation lower edge of the lubricating oil in crankshaft 9
Crankshaft oil hole 9b is flowed up, after flowing to the position of radial oil communication crankshaft oil hole 9b, radially oil circuit under the action of the centrifugal
It is flow to the oil sump 5a of upper bracket 5, in order to be lubricated in 9 low speed rotation of crankshaft, avoids the situation of low frequency fuel feeding deficiency.
For crankshaft 9 when middling speed rotates, a part of lubricating oil is upwardly into the top of crankshaft 9 along crankshaft oil hole 9b under this revolving speed
Outflow, but still it is unable to satisfy fuel feeding demand.A part of lubricating oil in crankshaft oil hole 9b is upwardly into crankshaft 9 along crankshaft oil hole 9b
Top outflow, after another part lubricating oil flow to the position of radial oil communication crankshaft oil hole 9b, under the action of the centrifugal along diameter
It flow to the oil sump 5a of upper bracket 5 to oil circuit, in order to be lubricated in 9 low speed rotation of crankshaft, avoids low frequency fuel feeding insufficient
Situation.
When rotating at high speed, the centrifugal force that current-limiting valve core 16 is subject to is larger for crankshaft 9, until it overcomes compressed spring 17 to it
To mobile far from the direction crankshaft oil hole 9b after the motive force of application, i.e. the big end of current-limiting valve core 16 is to the direction close to radial oil circuit
It is mobile；Since the pipeline section diameter of the radial oil circuit where current-limiting valve core 16 is less than the diameter of 16 big end of current-limiting valve core, so that current limliting
Its outer wall is bonded with the inner wall of radial oil circuit after spool 16 is mobile, seals radial oil circuit；Lubricating oil is bent in the rotation lower edge of crankshaft 9
Shafting oil hole 9b is flowed up, and still circulation upwards is flow to behind the position of radial oil communication crankshaft oil hole 9b, until by crankshaft 9
Top flow to the oil sump 5a of upper bracket 5, in order to be lubricated in 9 high speed rotation of crankshaft.
Wherein, above-mentioned low speed rotation, middling speed rotation and high speed rotation are only used for distinguishing the oil condition under the speed, specifically
Numerical value is depending on the practical structures of pump assembly.
Pump assembly provided in an embodiment of the present invention, by above-mentioned setting, effectively ensure crankshaft 9 when slowly running to
The case where oil sump 5a fuel feeding of upper bracket 5, avoids oil sump 5a inner oil shortage and causes the friction pair between each component of pump assembly
Bad situation, it is ensured that lubrication and heat dissipation effect, in order to steady under low frequency state using the compressor of the pump assembly
Fixed operation.
It is understood that above-mentioned crankshaft oil hole 9b can centered on oilhole, or eccentric oilhole.
Pump assembly further includes the balance weight 19 being set in the oil sump 5a of upper bracket 5, and balance weight 19 is sheathed on outside crankshaft 9
Side；Radial oil circuit includes the radial direction oil hole 9a of the first oilhole 19b and connection crankshaft oil hole 9b and crankshaft 9 through balance weight 19.
By the way that balance weight 19 is arranged, so that radial oil circuit arrives the axial wall of crankshaft oil hole 9b through balance weight 19 and crankshaft 9, radial direction is improved
The length of oil circuit, and then improve the centrifugal force of the radially lubricating oil of oil circuit flowing, it is ensured that radially oil circuit is suitable for lubricating oil
Smooth flowing.
It can also be not provided with balance weight 19, will only be connected to the radial direction oil hole 9a of crankshaft oil hole 9b and crankshaft 9 as radial oil
Road.
As shown in Figure 4 and Figure 5, it is pushed in order to ensure compressed spring 17 applies current-limiting valve core 16 to the direction crankshaft oil hole 9b
Power.First oilhole 19b is provided with positioning element 18 far from one end of crankshaft oil hole 9b, and compressed spring 17 is far from current-limiting valve core 16
One end offsets with positioning element 18.That is, the compression of compressed spring 17 is set between positioning element 18 and current-limiting valve core 16.It is installing
In the process, first compressed spring 17 is placed in radial oil circuit, one end offsets with current-limiting valve core 16；By positioning element 18 to first
Another end in contact of installation and compressed spring 17 in oilhole 19b, the pressure of compressed spring 17 is realized by the installation of positioning element 18
Installation is completed in contracting.By above-mentioned setting, the installation that compressed spring 17 is in compressive state is effectively realized.
It can also be not provided with positioning element 18, one end by compressed spring 17 far from current-limiting valve core 16 passes through welding or bonding
Etc. modes connect with balance weight 19.
As shown in Figures 2 and 3, in the present embodiment, positioning element 18 is the first oilhole 19b of sealing far from crankshaft oil hole 9b
One end sealing element；The second oilhole of the oil sump 5a of the first oilhole 19b of connection and upper bracket 5 is additionally provided on balance weight 19
19a.In process, run through the first oilhole 19b of processing from the outer wall of balance weight 19 to its inner wall using tools such as electric drills, it will
Positioning element 18 seals up the opening on 19 outer wall of balance weight, in order to which positioning element 18 and compressed spring 17 are far from current-limiting valve core
16 one end offsets；For the ease of outflow of lubrication oil, the second oilhole 19a is reprocessed, so that lubricating oil is after the first oilhole 19b
It is flowed out by the second oilhole 19a.By above-mentioned setting, the processing of radial oil circuit is effectively facilitated.
In order to avoid lubricating oil directly impacts the oil sump 5a of upper bracket 5, preferably by the axis of the first oilhole 19b and the second oil
The axis of hole 19a is mutually perpendicular to, also, opening up setting of the second oilhole 19a far from the first oilhole 19b.That is, lubricating oil edge
Second oilhole 19a is flowed down after being left to the top of balance weight 19.
As shown in Fig. 9, Figure 10 and Figure 11, in the present embodiment, the axis along the first oilhole 19b is provided on positioning element 18
The through-hole 18a of line arrangement.Lubricating oil in first oilhole 19b is left to positioning element 18 by the gap of compressed spring 17, and by leading to
Hole 18a outflow.The radial oil channel structures of the present embodiment are simple, are effectively simplified procedure of processing.
As shown in fig. 7, positioning element 18 is screw.By setting screw for positioning element 18, positioning is effectively facilitated
Component 18 protrudes into the length of the first oilhole 19b, in order to adjust the decrement of compressed spring 17, and then facilitates adjusting compressed spring
17 push the motive force of current-limiting valve core 16.
For the ease of part processing, rejection rate is reduced, crankshaft 9 and balance weight 19 are split type structure.That is, by crankshaft 9 with
Balance weight 19 is processed respectively, by being completed the two connection.
As shown in Figure 3 and Figure 6, the first oilhole is provided with current-limiting valve core slot 19c, flow-limiting valve close to one end of crankshaft oil hole 9b
Core slot 19c is correspondingly arranged with radial direction oil hole 9a；Current-limiting valve core 16 is located in current-limiting valve core slot 19c.It is understood that flow-limiting valve
There are gaps between the outer wall and current-limiting valve core 16 of core slot 19c, in order to lubricating oil flow.Pass through above-mentioned setting, it is ensured that limit
The moving stability of flow valve core 16.
Current-limiting valve core 16 can also be set in crankshaft oil hole 9b, be no longer discussed in detail herein and protection scope it
It is interior.
Crankshaft 9 and the setting of balance weight 19 can also be an integral structure, in order to simplify assembling process.
As shown in Figure 12 and Figure 13, radial direction oil hole 9a is overlapped with the first oilhole 19b, the second oilhole 19a and the first oilhole 19b
One end far from crankshaft oil hole 9b is connected to.
As shown in Figure 14 and Figure 15, radial direction oil hole 9a is overlapped with the first oilhole 19b and runs through balance weight 19.
As shown in figure 8, the flow for the ease of lubricating oil is adjusted, current-limiting valve core 16 includes taper seat portion 16b and setting
In the bonnet portion 16a of the big end of taper seat portion 16b.By the movement of taper seat portion 16b, its outer wall and radial oil circuit are adjusted
Inner wall between gap, and then reach the adjusting of flow of lubrication.It is understood that bonnet portion 16a can be fully sealed
Radial oil circuit.
Further, it is provided on taper seat portion 16b for being limited with the annular of the end of compressed spring 17 limit connection
Position slot 16c.The end of compressed spring 17 is stuck in annular spacing groove 16c, and it is opposite with current-limiting valve core 16 to reach compressed spring 17
It is fixed.Further, the section of annular spacing groove 16c is cambered surface.
The embodiment of the invention also provides a kind of screw compressor, including pump assembly, pump assembly is as any of the above-described
The pump assembly of kind.Since above-mentioned pump assembly has above-mentioned technique effect, the screw compressor with above-mentioned pump assembly
There should be same technical effect, no longer be discussed in detail herein.
As shown in Figure 1, the screw compressor in the present embodiment includes fixed scroll 1, orbiter 2, sealing element 3, cross
Slip ring 4, upper bracket 5, exhaust pipe 6, upper bearing (metal) 7, upper thrust plate 8, crankshaft 9, motor 10, Oil Guide component 11, lower bracket 12, under
Bearing 13, oil return pipe 14, oily access 15, current-limiting valve core 16, spring 17, screw 18, balance weight 19, shell 20 and dynamic vortex dish axle
Hold 21.
Upper bracket 5 is arranged in 20 top of shell, and fixed scroll 1 is placed in the upper surface of upper bracket 5, in upper bracket 5 and quiet vortex
It is provided with orbiter 2 between disk 1, passes through sealing element 3 between the end plate back surface and the end face upper bracket oil sump 5a of orbiter 2
Isolation, and the part is made to form two spaces, i.e. the oil sump 5a of the upper bracket 5 of 3 inside of sealing element is the first back pressure cavity and sealing
It is the second back pressure cavity 24 on the outside of part 3.The pressure (pressure with pressure at expulsion) of first back pressure cavity (i.e. oil sump 5a) is higher, and the
The pressure (intermediate pressure between pressure of inspiration(Pi) and pressure at expulsion) of two back pressure cavities 24 is lower.
By taking middling speed rotates as an example：When compressor operation, motor 10 drives crankshaft 9 to rotate, and crankshaft 9 drives orbiter 2 to transport
It is dynamic.Lubricating oil enters crankshaft oil hole 9b (being eccentric oilhole in the present embodiment) from center oilhole 9c under the drive of Oil Guide component 11
In, make a part in the lubricating oil in crankshaft oil hole 9b along diameter under the centrifugal force effect of the rotary motion generation of balance weight 19
In the oil sump 5a for entering upper bracket 5 through the radial oil circuit of balance weight 19 to oilhole 9a；Another part lubricating oil directly reaches crankshaft 9
The gap domain 23 at top, later along the pond hole 5a that gap oil access 22 enters upper bracket 5.
Lubricating oil a part into pond hole 5a (the first back pressure cavity) can be by sealing under the effect of 3 inside and outside differential pressure of sealing element
Component 3 enters the second back pressure cavity 24, lubricates anti-rotation cross slip-ring 4, and eventually enter into compression chamber, lubricate and seal fixed scroll
1 and the operating face that is engaged of orbiter 2；Another part lubricating oil can enter the axis of upper bracket bearing 7 along oily access 15
Gap domain space 7a is held, enters oil return pipe 14 after lubrication upper bearing (metal) 7 along upper push plate oil groove 8a and returns to pressure along 20 inner wall of shell
In the oil sump of contracting machine housing bottom.
Pump assembly provided by the present invention is described in detail above.Specific case used herein is to this hair
Bright principle and embodiment is expounded, method of the invention that the above embodiments are only used to help understand and its
Core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention
In range.
Claims (13)
1. a kind of pump assembly, the upper bracket (5) including crankshaft (9) and the support crankshaft (9), the interior setting of the crankshaft (9)
There is crankshaft oil hole (9b), which is characterized in that further include：
Along the radial oil circuit of the crankshaft (9) being arranged radially, crankshaft oil hole (9b) and described described in the radial direction oil communication
The oil sump (5a) of upper bracket (5)；
For blocking the current-limiting valve core (16) of the radial oil circuit, the current-limiting valve core (16) sets along the radial direction of the crankshaft (9)
It sets and its big end is located at close to the radial oil circuit where the side of the crankshaft oil hole (9b), the current-limiting valve core (16)
Pipeline section diameter is less than the diameter of the current-limiting valve core (16) big end and is greater than the diameter of the current-limiting valve core (16) small end；
Apply the compressed spring (17) of motive force in the radial oil circuit and to the crankshaft oil hole (9b).
2. pump assembly according to claim 1, which is characterized in that further include the oil sump for being set to the upper bracket (5)
Balance weight (19) in (5a), the balance weight (19) are sheathed on the outside of the crankshaft (9)；
The radial direction oil circuit include through the balance weight (19) the first oilhole (19b) and be connected to the crankshaft oil hole (9b) and
The radial direction oil hole (9a) of the crankshaft (9).
3. pump assembly according to claim 2, which is characterized in that first oilhole (19b) is far from the crankshaft oil
The one end in hole (9b) is provided with positioning element (18), the compressed spring (17) one end and institute far from the current-limiting valve core (16)
Positioning element (18) is stated to offset.
4. pump assembly according to claim 3, which is characterized in that the positioning element (18) is to seal first oil
The sealing element of the one end of hole (19b) far from the crankshaft oil hole (9b)；
The oil sump (5a) for being connected to first oilhole (19b) and the upper bracket (5) is additionally provided on the balance weight (19)
Second oilhole (19a).
5. pump assembly according to claim 4, which is characterized in that the axis of first oilhole (19b) and described the
The axis of two oilholes (19a) is mutually perpendicular to, opening up setting of second oilhole (19a) far from first oilhole (19b)
It sets.
6. pump assembly according to claim 3, which is characterized in that be provided on the positioning element (18) along described
The through-hole (18a) of the axis arrangement of one oilhole (19b).
7. pump assembly according to claim 3, which is characterized in that the positioning element (18) is screw.
8. pump assembly according to claim 2, which is characterized in that the crankshaft (9) is point with the balance weight (19)
Body formula structure.
9. pump assembly according to claim 8, which is characterized in that first oilhole (19b) is close to the crankshaft oil
The one end in hole (9b) is provided with current-limiting valve core slot (19c), and the current-limiting valve core slot (19c) is corresponding with the radial direction oil hole (9a) to be set
It sets；
The current-limiting valve core (16) is located in the current-limiting valve core slot (19c).
10. pump assembly according to claim 2, which is characterized in that the crankshaft (9) is one with the balance weight (19)
Body formula structure.
11. -10 described in any item pump assemblies according to claim 1, which is characterized in that the current-limiting valve core (16) includes cone
Bottom valve portions (16b) and be set to the taper seat portion (16b) big end bonnet portion (16a).
12. pump assembly according to claim 11, which is characterized in that be arranged on the taper seat portion (16b) useful
In the annular spacing groove (16c) with the limit connection of the end of the compressed spring (17).
13. a kind of screw compressor, including pump assembly, which is characterized in that the pump assembly is that claim 1-12 such as appoints
Pump assembly described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508081.0A CN106468264B (en) | 2015-08-18 | 2015-08-18 | Screw compressor and its pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508081.0A CN106468264B (en) | 2015-08-18 | 2015-08-18 | Screw compressor and its pump assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106468264A CN106468264A (en) | 2017-03-01 |
| CN106468264B true CN106468264B (en) | 2018-11-30 |
Family
ID=58214534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510508081.0A Active CN106468264B (en) | 2015-08-18 | 2015-08-18 | Screw compressor and its pump assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110360117A (en) * | 2019-08-26 | 2019-10-22 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of oil-feeding control structure, compressor and air conditioner |
| WO2021203638A1 (en) * | 2020-04-07 | 2021-10-14 | 艾默生环境优化技术(苏州)有限公司 | Counterbalance assembly for scroll compressor, and scroll compressor |
| CN115750365A (en) | 2021-09-03 | 2023-03-07 | 丹佛斯（天津）有限公司 | Scroll compressor having a plurality of scroll members |
| CN114412781B (en) * | 2022-02-23 | 2023-07-28 | 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62228694A (en) * | 1986-03-31 | 1987-10-07 | Toshiba Corp | Scroll compressor |
| JP2583944B2 (en) * | 1988-02-26 | 1997-02-19 | 松下冷機株式会社 | Compressor |
| JP2001003866A (en) * | 1999-06-18 | 2001-01-09 | Fujitsu General Ltd | Hermetic compressor |
| JP4222044B2 (en) * | 2003-02-03 | 2009-02-12 | ダイキン工業株式会社 | Scroll compressor |
| CN202100458U (en) * | 2011-05-24 | 2012-01-04 | 比亚迪股份有限公司 | Scroll compressor |
| CN202091198U (en) * | 2011-06-30 | 2011-12-28 | 惠州比亚迪电子有限公司 | Vortex compressor |
| CN205047435U (en) * | 2015-08-18 | 2016-02-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and pump body subassembly thereof |
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