CN106468264A - Screw compressor and its pump assembly - Google Patents
Screw compressor and its pump assembly Download PDFInfo
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- CN106468264A CN106468264A CN201510508081.0A CN201510508081A CN106468264A CN 106468264 A CN106468264 A CN 106468264A CN 201510508081 A CN201510508081 A CN 201510508081A CN 106468264 A CN106468264 A CN 106468264A
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- bent axle
- pump assembly
- oil
- limiting valve
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Abstract
The invention discloses a kind of screw compressor and its pump assembly, the upper bracket (5) that pump assembly includes bent axle (9) and supports bent axle (9), in bent axle (9), it is provided with crankshaft oil hole (9b)；Along the radial direction oil circuit being radially arranged of bent axle (9), the oil sump (5a) of radial direction oil communication crankshaft oil hole (9b) and upper bracket (5)；For blocking the current-limiting valve core (16) of radial direction oil circuit, current-limiting valve core (16) along bent axle (9) be radially arranged and its big end is located at side near crankshaft oil hole (9b), the pipeline section diameter of the radial direction oil circuit that current-limiting valve core (16) is located is less than diameter and the diameter more than current-limiting valve core (16) small end at the big end of current-limiting valve core (16)；Apply the compression spring (17) of motive force in radial direction 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 field, more particularly to a kind of screw compressor and its pump housing group
Part.
Background technology
Screw compressor includes orbiter, fixed scroll, bearing, upper bracket, lower carriage and bent axle etc.
Multiple parts, bent axle rotates under the drive of motor.Wherein, the part such as bearing, bent axle and orbiter
Rotate in housing, need to carry out feed lubrication, sealing and radiating.
At present, common screw compressor is as increasing in the crankshaft back end configuration part such as oil pump or oil guide piece
Pressure oil supply mechanism, in crank rotation, makes the lubricating oil of compressor housing bottom pass through oil pump or oil guide piece
It flow to bent axle top, then the gap between orbiter and crankshaft eccentric portion through crankshaft oil hole after supercharging
Passage flow to upper bracket region or back pressure space, lubricates the friction pair such as the scroll plate pump housing and bearing, lubricates it
Most of lubricating oil afterwards carries heat and is back to compressor housing bottom along way to cycle oil.
Lubricating oil needs bent axle to drive oil guide piece or adopt oil pump feed, its fuel system many with bent axle turn
Speed is related, and that is, speed of crankshaft is more high more enables good fuel feeding.But, with the rotating speed model of compressor
That encloses widens, and in the low frequency slow-speed of revolution, slow-revving bent axle cannot drive supercharging oil supply mechanism full to compressor
Sufficient fuel feeding demand, which results in oil sump internal upper part gassy and lubrication oil circulation amount even oil starvation less
Situation.Oil sump can not fill up lubricating oil, reduces to the mistake oil mass of the pump housing, and the rubbing of bearing and pump parts
Wipe secondary insufficient lubrication and can produce substantial amounts of heat, and lubricating oil can not take away frictional heat in time, radiating effect
Difference, even can cause the situation that bearing high temperature sintering or operating were lost efficacy, affect stablizing of compressor when serious
Run.
Therefore, how to guarantee fuel feeding situation, make compressor stable operation, be that those skilled in the art are current
The technical issues that need to address.
Content of the invention
It is an object of the invention to provide a kind of pump assembly, to guarantee fuel feeding situation, compressor is made stably to transport
OK.Present invention also offers a kind of compressor with above-mentioned pump assembly.
For solving above-mentioned technical problem, the present invention provides a kind of pump assembly, described including bent axle and support
The upper bracket of bent axle, is provided with crankshaft oil hole, also includes in described bent axle：
Along the radial direction oil circuit being radially arranged of described bent axle, crankshaft oil hole described in described radial direction oil communication and
The oil sump of described upper bracket；
For blocking the current-limiting valve core of described radial direction oil circuit, described current-limiting valve core sets along the radial direction of described bent axle
Put and its big end is positioned at the side near described crankshaft oil hole, the described radial direction oil that described current-limiting valve core is located
The pipeline section diameter on road is less than the diameter at the big end of described current-limiting valve core and is more than the straight of described current-limiting valve core small end
Footpath；
Apply the compression spring of motive force in described radial direction oil circuit and to described crankshaft oil hole.
Preferably, in above-mentioned pump assembly, also include the balance weight being arranged in the oil sump of described upper bracket,
Described balance weight is sheathed on outside described bent axle；
Described radial direction oil circuit includes running through the first oilhole of described balance weight and connects described crankshaft oil hole and institute
State the radial direction oil hole of bent axle.
Preferably, in above-mentioned pump assembly, described first oilhole is arranged away from one end of described crankshaft oil hole
There is positioning element, described compression spring is offseted with described positioning element away from one end of described current-limiting valve core.
Preferably, in above-mentioned pump assembly, described positioning element is to seal described first oilhole away from described
The sealing member of one end of crankshaft oil hole；
The second oil connecting described first oilhole and the oil sump of described upper bracket is additionally provided with described balance weight
Hole.
Preferably, in above-mentioned pump assembly, the axis of the axis of described first oilhole and described second oilhole
It is mutually perpendicular to, described second oilhole is away from the opening up setting of described first oilhole.
Preferably, in above-mentioned pump assembly, described positioning element is provided with the axle along described first oilhole
The through hole of line arrangement.
Preferably, in above-mentioned pump assembly, described positioning element is screw.
Preferably, in above-mentioned pump assembly, described bent axle and described balance weight are split-type structural.
Preferably, in above-mentioned pump assembly, described oil duct arranges limited near one end of described crankshaft oil hole
Flow valve core groove, described current-limiting valve core groove and described radial direction oil hole are correspondingly arranged；
Described current-limiting valve core is located in described current-limiting valve core groove.
Preferably, in above-mentioned pump assembly, described bent axle and described balance weight are integral type structure.
Preferably, in above-mentioned pump assembly, described current-limiting valve core includes taper seat portion and is arranged at described
The bonnet portion at the big end of taper seat portion.
Preferably, in above-mentioned pump assembly, described taper seat portion is provided with for described compression bullet
The annular spacing groove of the spacing connection in end of spring.
Present invention also offers a kind of screw compressor, including pump assembly it is characterised in that described pump
Body assembly is the pump assembly as described in any of the above-described.
The pump assembly that the present invention provides, in low speed rotation, under this rotating speed, lubricating oil cannot be along song for bent axle
The top that shafting oil hole is upwardly into bent axle is flowed out.Compression spring promotes current-limiting valve core to move to crankshaft oil hole direction,
I.e. the big end of current-limiting valve core is moved to the direction away from radial direction oil circuit；The radial direction oil being located due to current-limiting valve core
The pipeline section on road with diameter greater than current-limiting valve core small end diameter so that after current-limiting valve core is mobile its outer wall with radially
The inwall of oil circuit has gap；Lubricating oil flows up in the rotation lower edge crankshaft oil hole of bent axle, flow to footpath
To after the position of oil communication crankshaft oil hole, radially oil circuit flow to the oil sump of upper bracket under the action of the centrifugal,
In order to be lubricated in bent axle low speed rotation, it is to avoid low frequency supplies the situation of shortage of oil.
When middling speed rotates, under this rotating speed, a part for lubricating oil is upwardly into bent axle along crankshaft oil hole to bent axle
Top is flowed out, but still cannot meet fuel feeding demand.A part of lubricating oil in crankshaft oil hole is along bent axle oil
The top that hole is upwardly into bent axle is flowed out, and another part lubricating oil flow to the position of radial direction oil communication crankshaft oil hole
Postpone, radially oil circuit flow to the oil sump of upper bracket under the action of the centrifugal, in order in bent axle low speed rotation
When be lubricated, it is to avoid low frequency supply shortage of oil situation.
, in high-speed rotation, the centrifugal force that current-limiting valve core is subject to is larger for bent axle, until it overcomes compression spring
The motive force that it is applied moves away from crankshaft oil hole direction backward, and that is, the big end of current-limiting valve core is near footpath
Move to the direction of oil circuit；Pipeline section diameter due to the radial direction oil circuit at current-limiting valve core place is less than current-limiting valve core
The diameter at big end so that after current-limiting valve core is mobile its outer wall fit with the inwall of radial direction oil circuit, seal radial direction
Oil circuit；Lubricating oil flows up in the rotation lower edge crankshaft oil hole of bent axle, flow to radial direction oil communication bent axle
Still circulate upwards behind the position of oilhole, until flow to the oil sump of upper bracket by the top of bent axle, in order to
It is 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 fuel feeding under this speed
State, concrete numerical value is depending on the practical structures of pump assembly.
The pump assembly that the present invention provides, by above-mentioned setting, effectively ensure that bent axle when slowly running
Situation to the oil sump fuel feeding of upper bracket, it is to avoid oil sump inner oil shortage and between causing each part of pump assembly
The bad situation of friction pair it is ensured that lubrication and radiating effect, in order to apply the pressure of this pump assembly
Stable operation under low frequency state for the contracting machine.
Present invention also offers a kind of screw compressor with above-mentioned pump assembly, it has same skill
Art effect.
Brief description
Fig. 1 is the structural representation of screw compressor provided by the present invention；
Fig. 2 is the first structural representation of pump assembly provided by the present invention；
Fig. 3 is the partial enlarged drawing of part A in Fig. 2；
Fig. 4 is the first structural representation of bent axle provided by the present invention and balance weight；
Fig. 5 is the first exploded perspective view of bent axle provided by the present invention and balance weight；
Fig. 6 is the cross-sectional schematic of balance weight provided by the present invention；
Fig. 7 is the first structural representation of positioning element provided by the present invention；
Fig. 8 is the structural representation of current-limiting valve core provided by the present invention；
Fig. 9 is the second structural representation of pump assembly provided by the present invention；
Figure 10 is the partial enlarged drawing of part A in Fig. 9；
Figure 11 is the second structural representation of positioning element provided by the present invention；
Figure 12 is the second structural representation of bent axle provided by the present invention and balance weight；
Figure 13 is the second cross-sectional schematic of bent axle provided by the present invention and balance weight；
Figure 14 is the third structural representation of bent axle provided by the present invention and balance weight；
Figure 15 is the third cross-sectional schematic of bent axle provided by the present invention and balance weight.
Specific embodiment
The core of the present invention is to provide a kind of pump assembly, to guarantee fuel feeding situation, so that compressor is stably transported
OK.Present invention also offers a kind of compressor with above-mentioned pump assembly.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the accompanying drawings and specifically
The present invention is described in further detail for embodiment.
Refer to Fig. 2 and Fig. 3, Fig. 2 is the first structural representation of pump assembly provided by the present invention；
Fig. 3 is the partial enlarged drawing of part A in Fig. 2.
In this specific embodiment, the upper bracket 5 that pump assembly includes bent axle 9 and supports bent axle 9,
It is provided with crankshaft oil hole 9b in bent axle 9, also include radial direction oil circuit, current-limiting valve core 16 and compression spring 17.
Radial direction oil circuit is radially arranged along bent axle 9, and, radial direction oil communication crankshaft oil hole 9b and upper bracket 5
Oil sump 5a.Current-limiting valve core 16 is used for blocking radial direction oil circuit, and current-limiting valve core 16 sets along the radial direction of bent axle 9
Put and its big end is positioned at the side near crankshaft oil hole 9b, the pipe of the radial direction oil circuit at current-limiting valve core 16 place
Section diameter is less than diameter and the diameter more than current-limiting valve core 16 small end at current-limiting valve core 16 end greatly；That is, footpath
Connect to oil circuit with crankshaft oil hole 9b, current-limiting valve core 16 and radial direction oil circuit have two states, Yi Zhongshi
Current-limiting valve core 16 blocks radial direction oil circuit, and another kind is that current-limiting valve core 16 does not block radial direction oil circuit.Compression bullet
Spring 17 is arranged in radial direction oil circuit, and, to crankshaft oil hole 9b direction, current-limiting valve core 16 is applied to promote
Power.
In low speed rotation, under this rotating speed, lubricating oil cannot be upwardly into bent axle 9 along crankshaft oil hole 9b to bent axle 9
Top flow out.Compression spring 17 promotes current-limiting valve core 16 to move to crankshaft oil hole 9b direction, i.e. current limliting
The big end of valve element 16 is moved to the direction away from radial direction oil circuit；The radial direction oil being located due to current-limiting valve core 16
The pipeline section on road with diameter greater than current-limiting valve core 16 small end diameter so that its outer wall after current-limiting valve core 16 is mobile
With the inwall of radial direction oil circuit, there is gap；Lubricating oil bent axle 9 rotation lower edge crankshaft oil hole 9b to upstream
Dynamic, after flowing to the position of radial direction oil communication crankshaft oil hole 9b, radially oil circuit flow under the action of the centrifugal
The oil sump 5a of upper bracket 5, in order to be lubricated in bent axle 9 low speed rotation, it is to avoid low frequency fuel feeding is not
The situation of foot.
When middling speed rotates, under this rotating speed, a part for lubricating oil is upwardly into song along crankshaft oil hole 9b to bent axle 9
The top of axle 9 is flowed out, but still cannot meet fuel feeding demand.A part of lubricating oil in crankshaft oil hole 9b
The top being upwardly into bent axle 9 along crankshaft oil hole 9b is flowed out, and another part lubricating oil flow to radial direction oil communication
Behind the position of crankshaft oil hole 9b, radially oil circuit flow to the oil sump 5a of upper bracket 5 under the action of the centrifugal, with
It is easy to be lubricated in bent axle 9 low speed rotation, it is to avoid low frequency supplies the situation of shortage of oil.
, in high-speed rotation, the centrifugal force that current-limiting valve core 16 is subject to is larger for bent axle 9, until it overcomes compression
The motive force that spring 17 applies to it moves away from crankshaft oil hole 9b direction backward, i.e. current-limiting valve core 16
Hold greatly and move near the direction of radial direction oil circuit；Because the pipeline section of the radial direction oil circuit at current-limiting valve core 16 place is straight
Footpath is less than the diameter at current-limiting valve core 16 end greatly so that its outer wall and radial direction oil circuit after current-limiting valve core 16 is mobile
Inwall laminating, seal radial direction oil circuit；Lubricating oil bent axle 9 rotation lower edge crankshaft oil hole 9b to upstream
Dynamic, still circulate upwards behind the position flowing to radial direction oil communication crankshaft oil hole 9b, until by bent axle 9
Top flow to the oil sump 5a of upper bracket 5, in order to be lubricated in bent axle 9 high-speed rotation.
Wherein, above-mentioned low speed rotation, middling speed rotation and high-speed rotation are only used for distinguishing the fuel feeding under this speed
State, concrete 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 that bent axle 9 low
When speed rotates to upper bracket 5 oil sump 5a fuel feeding situation, it is to avoid oil sump 5a inner oil shortage and cause the pump housing
The bad situation of friction pair between each part of assembly is it is ensured that lubricate and radiating effect, in order to apply
Stable operation under low frequency state for the compressor of this pump assembly.
It is understood that above-mentioned crankshaft oil hole 9b can centered on oilhole or eccentric oilhole.
The balance weight 19 in oil sump 5a that pump assembly also includes be arranged at upper bracket 5,19 sets of balance weight
Outside bent axle 9；Radial direction oil circuit includes the first oilhole 19b and the connection bent axle oil running through balance weight 19
Hole 9b and radial direction oil hole 9a of bent axle 9.By arranging balance weight 19 so that radial direction oil circuit runs through balance
Block 19 and bent axle 9, to the axial wall of crankshaft oil hole 9b, improve the length of radial direction oil circuit, and then improve
Radially oil circuit flowing lubricating oil centrifugal force it is ensured that lubricating oil radially oil circuit smoothly flows.
Balance weight 19 can also be not provided with, only by radial direction oil hole 9a of connection crankshaft oil hole 9b and bent axle 9
As radial direction oil circuit.
As shown in Figure 4 and Figure 5, in order to ensure compression spring 17 to crankshaft oil hole 9b direction to flow-limiting valve
Core 16 applies motive force.First oilhole 19b is provided with positioning element 18 away from one end of crankshaft oil hole 9b,
Compression spring 17 is offseted with positioning element 18 away from one end of current-limiting valve core 16.That is, compression spring 17
Compression is arranged between positioning element 18 and current-limiting valve core 16.In installation process, first by compression spring
17 are placed in radial direction oil circuit, and its one end is offseted with current-limiting valve core 16；By positioning element 18 to the first oilhole
Another end in contact with compression spring 17 is installed in 19b, compression bullet is realized by the installation of positioning element 18
The compression of spring 17, completes to install.By above-mentioned setting, effectively achieving compression spring 17 is in compression
The installation of state.
Positioning element 18 can also be not provided with, compression spring 17 is passed through away from one end of current-limiting valve core 16
The mode such as welding or bonding is connected with balance weight 19.
As shown in Figures 2 and 3, in the present embodiment, positioning element 18 is that sealing the first oilhole 19b is remote
Sealing member from one end of crankshaft oil hole 9b；Be additionally provided with balance weight 19 connection the first oilhole 19b with
The second oilhole 19a of the oil sump 5a of upper bracket 5.In process, using instruments such as electric drills by balancing
The outer wall of block 19 runs through processing the first oilhole 19b to its inwall, and positioning element 18 is sealed up balance weight
Opening on 19 outer walls, in order to positioning element 18 and compression spring 17 away from current-limiting valve core 16 one end
Offset；For the ease of outflow of lubrication oil, reprocess the second oilhole 19a so that lubricating oil is through the first oilhole
Flowed out by the second oilhole 19a after 19b.By above-mentioned setting, effectively facilitate the processing of oil duct.
In order to avoid lubricating oil directly impacts the oil sump 5a of upper bracket 5, preferably by the axle of the first oilhole 19b
Line is mutually perpendicular to the axis of the second oilhole 19a, and, the second oilhole 19a is away from the first oilhole 19b
Opening up setting.That is, lubricating oil flows down be left to the top of balance weight 19 along the second oilhole 19a after.
As shown in Fig. 9, Figure 10 and Figure 11, in the present embodiment, positioning element 18 is provided with along
The through hole 18a of the axis arrangement of one oilhole 19b.Lubricating oil in first oilhole 19b is by compression spring 17
Gap be left to positioning element 18, and flowed out by through hole 18a.The oil channel structure of the present embodiment is simple, has
Effect simplifies procedure of processing.
As shown in fig. 7, positioning element 18 is screw.By positioning element 18 is set to screw, have
Efficacious prescriptions positioning element 18 stretch into the length of the first oilhole 19b, in order to adjust compression spring 17
Decrement, and then the convenient motive force adjusting compression spring 17 promotion current-limiting valve core 16.
For the ease of part processing, rate of reducing the number of rejects and seconds, bent axle 9 and balance weight 19 are split-type structural.That is,
Bent axle 9 is processed respectively with balance weight 19, by being completed the two connection.
As shown in Figure 3 and Figure 6, oil duct is provided with current-limiting valve core groove 19c near one end of crankshaft oil hole 9b,
Current-limiting valve core groove 19c is correspondingly arranged with radial direction oil hole 9a；Current-limiting valve core 16 is located at current-limiting valve core groove 19c
Interior.It is understood that there is gap between the outer wall of current-limiting valve core groove 19c and current-limiting valve core 16, with
It is easy to lubricating oil flow.By above-mentioned setting it is ensured that the moving stability of current-limiting valve core 16.
Current-limiting valve core 16 can also be arranged in crankshaft oil hole 9b, here is no longer discussed in detail and all exists
Within protection domain.
Bent axle 9 and balance weight 19 can also be set to 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
Connect away from one end of crankshaft oil hole 9b with the first oilhole 19b.
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, for the ease of the Flow-rate adjustment of lubricating oil, current-limiting valve core 16 includes taper seat portion
16b and be arranged at taper seat portion 16b big end bonnet portion 16a.Shifting by taper seat portion 16b
Dynamic, adjust the gap between its outer wall and the inwall of radial direction oil circuit, and then reach the regulation of flow of lubrication.
It is understood that bonnet portion 16a can fully seal radial direction oil circuit.
Further, taper seat portion 16b is provided with for connection spacing with the end of compression spring 17
Annular spacing groove 16c.The end of compression spring 17 is stuck in annular spacing groove 16c, reaches compression bullet
Spring 17 is relatively fixed with current-limiting valve core 16.Further, the section of annular spacing groove 16c is arc
Face.
The embodiment of the present invention additionally provides a kind of screw compressor, including pump assembly, pump assembly be as
Any of the above-described kind of pump assembly.Because above-mentioned pump assembly has above-mentioned technique effect, there is said pump
The screw compressor of body assembly also should have same technique effect, and here is no longer discussed in detail.
As shown in figure 1, the screw compressor in the present embodiment includes fixed scroll 1, orbiter 2, close
Sealing 3, cross slip-ring 4, upper bracket 5, exhaustor 6, upper bearing (metal) 7, upper thrust plate 8, bent axle 9,
Motor 10, Oil Guide part 11, lower carriage 12, lower bearing 13, oil return pipe 14, oily path 15, current limliting
Valve element 16, spring 17, screw 18, balance weight 19, housing 20 and orbiter bearing 21.
Housing 20 top arranges upper bracket 5, and fixed scroll 1 is placed, at upper in the upper surface of upper bracket 5
It is provided with orbiter 2, the end plate back surface of orbiter 2 and upper bracket between frame 5 and fixed scroll 1
Isolated by sealing member 3 between oil sump 5a end face, and make this part form two spaces, i.e. sealing member 3
The oil sump 5a of the upper bracket 5 of inner side is the first back pressure cavity and sealing member 3 outside is the second back pressure cavity 24.The
The pressure (having the pressure of pressure at expulsion) of one back pressure cavity (i.e. oil sump 5a) is higher, and the second back pressure cavity
24 pressure (intermediate pressure between pressure of inspiration(Pi) and pressure at expulsion) is relatively low.
So that middling speed rotates as a example：During compressor operation, motor 10 drives bent axle 9 to rotate, and bent axle 9 drives
Orbiter 2 moves.Lubricating oil enters crankshaft oil hole from center oilhole 9c under the drive of Oil Guide part 11
In 9b (being eccentric oilhole in the present embodiment), in the centrifugal action of the rotary motion generation of balance weight 19
Under make in crankshaft oil hole 9b lubricating oil in a part radially radial direction oil through balance weight 19 for the oilhole 9a
Road enters in the oil sump 5a of upper bracket 5；Another part lubricating oil directly reaches the gap domain at bent axle 9 top
23, tailing edge gap oil path 22 enter upper bracket 5 pond hole 5a in.
The lubricating oil part entering pond hole 5a (the first back pressure cavity) is under the effect of sealing member 3 inside and outside differential pressure
The second back pressure cavity 24 can be entered through seal member 3, lubricate anti-rotation cross slip-ring 4, and eventually enter into
Compression chamber, lubricates and seals the operating face that fixed scroll 1 and orbiter 2 are engaged；Another part
Lubricating oil can enter the bearing clearance domain space 7a of upper bracket bearing 7 along oily path 15, lubricates upper bearing (metal)
On 7 tailing edge, push pedal oil groove 8a enters oil return pipe 14 and returns to compressor housing bottom along housing 20 inwall
Oil sump in.
Above pump assembly provided by the present invention is described in detail.Used herein specifically individual
Example is set forth to the principle of the present invention and embodiment, and the explanation of above example is only intended to help
Understand the method for the present invention and its core concept.It should be pointed out that the ordinary skill people for the art
For member, under the premise without departing from the principles of the invention, the present invention can also be carried out some improve and repair
Decorations, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (13)
1. a kind of pump assembly, including the upper bracket (5) of bent axle (9) and the described bent axle of support (9),
It is provided with crankshaft oil hole (9b) it is characterised in that also including in described bent axle (9)：
Along the radial direction oil circuit being radially arranged of described bent axle (9), bent axle oil described in described radial direction oil communication
The oil sump (5a) of hole (9b) and described upper bracket (5)；
For blocking the current-limiting valve core (16) of described radial direction oil circuit, described current-limiting valve core (16) is along described
Bent axle (9) be radially arranged and its big end be located near described crankshaft oil hole (9b) side, described limit
The pipeline section diameter of the described radial direction oil circuit that flow valve core (16) is located is less than the big end of described current-limiting valve core (16)
Diameter and more than described current-limiting valve core (16) small end diameter；
Apply the compression spring of motive force in described radial direction oil circuit and to described crankshaft oil hole (9b)
(17).
2. pump assembly according to claim 1 is it is characterised in that also include being arranged on described
Balance weight (19) in the oil sump (5a) of support (5), described balance weight (19) is sheathed on described song
Outside axle (9)；
Described radial direction oil circuit includes running through first oilhole (19b) of described balance weight (19) and connects described
The radial direction oil hole (9a) of crankshaft oil hole (9b) and described bent axle (9).
3. pump assembly according to claim 2 is it is characterised in that described first oilhole (19b)
One end away from described crankshaft oil hole (9b) is provided with positioning element (18), described compression spring (17)
One end and described positioning element (18) away from described current-limiting valve core (16) offset.
4. pump assembly according to claim 3 is it is characterised in that described positioning element (18)
For sealing the sealing member of described first oilhole (19b) one end away from described crankshaft oil hole (9b)；
Described first oilhole (19b) of connection and described upper bracket (5) are additionally provided with described balance weight (19)
Oil sump (5a) the second oilhole (19a).
5. pump assembly according to claim 4 is it is characterised in that described first oilhole (19b)
Axis be mutually perpendicular to the axis of described second oilhole (19a), described second oilhole (19a) is away from institute
State the opening up setting of the first oilhole (19b).
6. pump assembly according to claim 3 is it is characterised in that described positioning element (18)
On be provided with along described first oilhole (19b) axis arrangement through hole (18a).
7. pump assembly according to claim 3 is it is characterised in that described positioning element (18)
For screw.
8. pump assembly according to claim 2 is it is characterised in that described bent axle (9) and institute
Stating balance weight (19) is split-type structural.
9. pump assembly according to claim 8 is it is characterised in that described oil duct is near described song
The one end in shafting oil hole (9b) is provided with current-limiting valve core groove (19c), described current-limiting valve core groove (19c) and institute
State radial direction oil hole (9a) to be correspondingly arranged；
Described current-limiting valve core (16) is located in described current-limiting valve core groove (19c).
10. pump assembly according to claim 2 is it is characterised in that described bent axle (9) and institute
Stating balance weight (19) is integral type structure.
11. pump assemblies according to any one of claim 1-10 are it is characterised in that described current limliting
Valve element (16) includes taper seat portion (16b) and the big end being arranged at described taper seat portion (16b)
Bonnet portion (16a).
12. pump assemblies according to any one of claim 1-11 are it is characterised in that described taper
It is provided with seat portion (16b) for the annular limit with the spacing connection in end of described compression spring (17)
Position groove (16c).
A kind of 13. screw compressors, including pump assembly it is characterised in that described pump assembly be as
Pump assembly described in any one of claim 1-12.
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 true CN106468264A (en) | 2017-03-01 |
| CN106468264B CN106468264B (en) | 2018-11-30 |
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| 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114412781A (en) * | 2022-02-23 | 2022-04-29 | 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 |
| US11852144B2 (en) | 2021-09-03 | 2023-12-26 | Danfoss (Tianjin) Ltd. | Scroll compressor |
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| CN202100458U (en) * | 2011-05-24 | 2012-01-04 | 比亚迪股份有限公司 | Scroll 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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| JPS62228694A (en) * | 1986-03-31 | 1987-10-07 | Toshiba Corp | Scroll compressor |
| JPH01219383A (en) * | 1988-02-26 | 1989-09-01 | Matsushita Refrig Co Ltd | Compressor |
| JP2001003866A (en) * | 1999-06-18 | 2001-01-09 | Fujitsu General Ltd | Hermetic compressor |
| CN1651768A (en) * | 2003-02-03 | 2005-08-10 | 大金工业株式会社 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US11852144B2 (en) | 2021-09-03 | 2023-12-26 | Danfoss (Tianjin) Ltd. | Scroll compressor |
| CN114412781A (en) * | 2022-02-23 | 2022-04-29 | 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 |
| 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 | Publication date |
|---|---|
| CN106468264B (en) | 2018-11-30 |
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