CN106762660B - A kind of compressor main shaft and the compressor with it - Google Patents
A kind of compressor main shaft and the compressor with it Download PDFInfo
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- CN106762660B CN106762660B CN201710107704.2A CN201710107704A CN106762660B CN 106762660 B CN106762660 B CN 106762660B CN 201710107704 A CN201710107704 A CN 201710107704A CN 106762660 B CN106762660 B CN 106762660B
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- hole
- oil
- main shaft
- compressor
- pressure
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- 230000004308 accommodation Effects 0.000 claims 4
- 239000011148 porous material Substances 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention provides a kind of compressor main shaft and the compressor with it, and compressor main shaft includes spindle hole (1) in axial direction on its interior and the main shaft radial direction oil hole (2) that is radially connected with spindle hole (1)；Be provided with plug cock (3) on the top of spindle hole (1), and in spindle hole (1), valve module (4) are also set up between plug cock (3) and main shaft radial direction oil hole (2)；Valve module setting are as follows: when the oil pressure in spindle hole is greater than back pressure provided by valve module, valve module is opened, to allow oil to flow to plug cock (3) from spindle hole；When the oil pressure in spindle hole is less than back pressure provided by valve module, valve module is closed, to prevent oil from flowing to plug cock (3) from spindle hole.It enables to the back pressure of the back pressure for eventually entering into main shaft radial direction oil hole in the case where the speed of mainshaft is inconsistent oil that can also reach through the invention stablize, back-pressure surges will not be generated.
Description
Technical field
The invention belongs to Compressor Technology fields, and in particular to a kind of compressor main shaft and the compressor with it.
Background technique
At present in tradition sliding-vane compressor slide plate back pressure oil circuit, back pressure oil by the oil pump of pump housing bottom rotate pump oil into
Enter spindle hole, the oil into spindle hole enters the radial oily of main shaft by main shaft rotation bring centrifugal force effect
Hole finally enters slide plate back pressure slot by clearance channel, provides back pressure for slide plate, and spindle hole upper end is equipped with control oil
The plug cock of rate of discharge can prevent oil to be directly lost from spindle hole upper end to a certain extent.
But since oil pump is positive displacement pump, with the promotion of compressor rotary speed, the pump oil amount of oil pump also be will increase, this meeting
Cause when compressing high-speed cruising, oily pump oil amount can greatly increase, although plug cock has restriction effect, since its aperture is one
Fixed, i.e., when oil pump pump oil amount is inconsistent, plug cock cannot carry out pressure controlling to the oil in spindle hole, can make to enter back
The oil pressure of indent is inconsistent, generates back-pressure surges；
Plug cock aperture is difficult to confirm, if plug cock aperture is excessive, the oil that will lead to spindle hole is most of from main shaft
End is lost, and can not be provided back pressure for slide plate, if plug cock aperture is too small, the oil pressure of spindle hole can be made excessive, cause back pressure
Increase, slide plate head power consumption can be made to increase, causes the reduction of compressor efficiency；
The simple mode for making the oil in spindle hole enter main shaft radial hole by main shaft centrifugal force is unreliable, in compressor
When low speed is run, since spindle hole aperture is limited, centrifugal force is limited, and clearance channel flow resistance is big, can make it is oily most of from
Main shaft upper end is lost, and without walking the big main shaft radial hole of flow resistance, causes back pressure for shortage of oil；
Since the back pressure oil of sliding-vane compressor in the prior art is there are back-pressure surges, back pressure are unstable, cannot provide
The technical problems such as sufficient back pressure oil, therefore researching and designing of the present invention goes out a kind of compressor main shaft and the compressor with it.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming the back pressure oil of compressor in the prior art, there are back pressures
Fluctuation, back pressure are unstable, the defect of sufficient back pressure oil cannot be provided, to provide a kind of compressor main shaft and the pressure with it
Contracting machine.
The present invention provides a kind of compressor main shaft comprising the spindle hole on its interior in axial direction opened up,
And the main shaft radial direction oil hole being radially connected with the spindle hole；
The top of the spindle hole is provided with plug cock, and in the spindle hole, be located at the plug cock with
Valve module is additionally provided between the main shaft radial direction oil hole；
The valve module is set to: when the oil pressure in the spindle hole is greater than back pressure provided by the valve module
When, the valve module is opened, to allow oil to flow to the plug cock from the spindle hole；When in the spindle hole
When oil pressure is less than back pressure provided by the valve module, the valve module is closed, to prevent oil from flowing from the spindle hole
To the plug cock.
Preferably, the valve module includes valve body and elastic parts, and the valve body can be moved axially along main shaft to open
It states the flow path of spindle hole and closes the flow path；The lower end of the elastic parts is connected on the valve body, upper end is connected to
The plug cock.
Preferably, the valve body is ball valve.
Preferably, the elastic parts is spring, and the stiffness coefficient of the spring is K, by the valve body and the oil
It fills in the displacement compressed opposite to each other and is defined as X, the spring back-pressure power F=K*X of generation.
Preferably, the spindle hole includes main aperture and two sections or more different inner diameters being connected with the main aperture upper end
Stepped hole, and the valve body is located at the position of the first stepped hole in the stepped hole, and first stepped hole is upper hole
The diameter hole bigger than the aperture of lower part, can be locked at the position of first stepped hole when valve body moves downward.
Preferably, first stepped hole be gradually reduced vertically to lower internal diameter, along axial cross section shape at loudspeaker
The round platform hole of mouth-shaped.
Preferably, the stepped hole further includes the spring receiving hole for accommodating the elastic parts, in the spring receiving hole
End connects with the plug cock lower end, lower end connects with first stepped hole, and the spring receiving hole is cylindrical hole, its internal diameter
It is identical as the internal diameter of the round platform hole upper end.
Preferably, the stepped hole further includes connecting positioned at the round platform hole lower end and with the round platform hole cylindrical
Transitional pore, the internal diameter of the transitional pore is identical as the internal diameter of the round platform hole lower end, and is less than the internal diameter of the main aperture.
Preferably, the plug cock is telescoping structure, and the elastic parts that can accommodate including being located at its underpart enters
Accommodation space and at its upper end for against the upper end of the elastic parts.
Preferably, the upper end of the plug cock is provided with the spilling that oil can be discharged being connected with the accommodation space
The aperture of hole, the accommodation space cylindrical form and the overfolw hole is less than the diameter of the accommodation space.
Preferably, the peripheral outer wall of the telescopic plug cock is provided with external screw thread, the spindle hole upper end it is interior
The internal screw thread for the effect that can match with the external screw thread is provided on wall.
It preferably, further include the oil pump connector that can be carried out matching with oil pump and connect for being set to main shaft lower end.
The present invention also provides a kind of compressors comprising compressor main shaft above-mentioned.
Preferably, the compressor is sliding-vane compressor.
It a kind of compressor main shaft provided by the invention and is had the following beneficial effects: with its compressor
1. a kind of compressor main shaft of the invention and the compressor with it, pass through the plug cock in spindle hole and main shaft
Valve module is arranged in position between radial direction oil hole, so that opening valve module when oil pressure is greater than valve module back pressure with pressure release, works as oil
Shut-off valve assembly stops pressure release when pressure is less than valve module back pressure, enables to eventually enter into the case where the speed of mainshaft is inconsistent
The back pressure of the back pressure oil of main shaft radial direction oil hole, which can also reach, to be stablized, will not generate back-pressure surges, will not be supplied since back pressure is too small
Shortage of oil, at the same will not it is excessive due to back pressure and cause from plug cock upper end be lost and make it is excessive for shortage of oil or back pressure and
The case where pressure power consumption into cylinder (preferably slide plate head) increases and compressor efficiency is caused to reduce；
2. compressor main shaft of the invention and the compressor with it, by designing certain spring rate and decrement energy
Enough control obtains the size of required back pressure, carries out accurate pressure regulation to the oil in spindle hole to effectively realize
Purpose；
3. compressor main shaft of the invention and the compressor with it also can in the operation of compressor low speed, low centrifugal force
Guarantee that sufficient oil mass enters main shaft radial direction oil hole, guarantees sufficient back pressure, sufficient back pressure oil is provided.
Detailed description of the invention
Fig. 1 is the configuration schematic diagram of compressor of the invention；
Fig. 2 is the internal sectional of compressor pump main shaft portion of the invention when valve module is located at first state position
Figure；
Fig. 3 is the partial enlargement structural representation of the part A in Fig. 2；
Fig. 4 is the internal sectional of compressor pump main shaft portion of the invention when valve module is located at the second state position
Figure；
Fig. 5 is the partial enlargement structural representation of the part B in Fig. 4；
Fig. 6 a is plug cock schematic perspective view of the invention；Fig. 6 b is plug cock main view of the invention；Fig. 6 c is Fig. 6 b
Vertical direction internal view；Fig. 6 d is the top view of plug cock；
Fig. 7 a is the schematic perspective view of spring of the invention；Fig. 7 b is the Facad structure signal of ball valve of the invention
Figure；
Fig. 8 a is the front section view of compressor main shaft of the invention；Fig. 8 b is the three-dimensional knot of compressor main shaft of the invention
Structure schematic diagram；Fig. 8 c is the enlarged structure schematic diagram of the part D of Fig. 8 b.
Appended drawing reference indicates in figure are as follows:
1-spindle hole, 11-main apertures, the 12-the first stepped hole, 13-spring receiving holes, 14-transitional pores, 15-
Internal screw thread, 2-main shaft radial direction oil holes, 3-plug cocks, 31-accommodation spaces, 32-upper ends, 33-overfolw holes, 34-external screw threads,
4-valve modules, 41-valve bodies, 411-ball valves, 42-elastic parts, 421-springs, 5-main shafts, 6-upper flanges, 7-laxative remedies
Orchid, 8-cylinders, 9-slide plates, 10-lower cover plates, 100-oil pumps, 101-exhaust valves, 102-screws, the connection of 103-oil pumps
Head.
Specific embodiment
As shown in Fig. 1-8c, the present invention provides a kind of compressor main shaft comprising on its interior in axial direction to open up
The spindle hole 1 that back pressure oil stream can be allowed to cross and the main shaft being radially connected with the spindle hole 1
Radial direction oil hole 2, the main shaft radial direction oil hole 2 are used to oil transferring out the main shaft 5 to provide the back pressure and lubrication of needs；
The top of the spindle hole 1 is provided with plug cock 3, and in the spindle hole 1, be located at the plug cock
Position between 3 and the main shaft radial direction oil hole 2 is additionally provided with valve module 4, and 4 upper end of valve module is connected with the plug cock 3；
The valve module is set to: when the oil pressure in the spindle hole is greater than back pressure provided by the valve module
When, the valve module is opened, to allow oil to flow to the plug cock 3 from the spindle hole；When in the spindle hole
Oil pressure when being less than back pressure provided by the valve module, the valve module is closed, to prevent oil from the spindle hole
It flow to the plug cock 3.
By the way that valve module is arranged in the position in spindle hole, between plug cock and main shaft radial direction oil hole, so that working as oil pressure
Valve module is opened when greater than valve module back pressure with pressure release, shut-off valve assembly stops pressure release, energy when oil pressure is less than valve module back pressure
It is enough so that the back pressure that the back pressure oil of main shaft radial direction oil hole is eventually entered into the case where the speed of mainshaft is inconsistent can also reach stabilization,
Back-pressure surges will not be generated, will not be too small due to back pressure and for shortage of oil, while will not cause since back pressure is excessive from oil
End is lost and pressure power consumption that is excessive for shortage of oil or back pressure and entering cylinder (preferably slide plate head) is made to increase and lead beyond the Great Wall
The case where causing compressor efficiency to reduce；In the operation of compressor low speed, low centrifugal force, it also can guarantee that sufficient oil mass enters
Main shaft radial direction oil hole guarantees sufficient back pressure, provides sufficient back pressure oil.
Preferably, the valve module 4 include valve body 41 and elastic parts 42, the valve body 41 can along main shaft move axially with
It opens the flow path of the spindle hole 1 and closes the flow path；The lower end of the elastic parts 42 is connected on the valve body 41,
Upper end is connected to the plug cock 3.By set valve module to include valve body and elastic parts structure type, bullet can be passed through
Property component the flow path of spindle hole is moved axially with and then opened or closed by valve body with moving valve, realize that back pressure is oily
Stablize the purpose and effect of regulation.
Preferably, the valve body 41 is ball valve 411.This is the preferred constructive form of valve body of the invention, can play resistance
Baffle body passes through and opens the purpose of fluid flowing path.Further, it is preferable to which the ball valve is entity steel ball.
Preferably, the elastic parts 42 is spring 421, and the stiffness coefficient of the spring is K, by 41 He of valve body
The displacement that the plug cock 3 compresses opposite to each other is defined as X, the spring back-pressure power F=K*X of generation.By the way that elastic parts is selected
It is the preferred constructive form of compressor main shaft of the invention for the structure type of spring, the self-stiffness system of spring can be passed through
Number K and the initial decrement X of spring obtain the spring back-pressure power F needed, can also be selected according to required known back pressure F
The spring of appropriate stiffness coefficient K obtains corresponding decrement X in turn again, therefore can obtain required stable back-pressure.
The size of the back pressure needed for obtaining can be controlled by designing certain spring rate and decrement, to effectively realize pair
Oil in spindle hole carries out the purpose of accurate pressure regulation.
In compressor high-speed cruising, oil pump pump oil amount greatly increases the present invention, and spindle hole oil pressure at this time can increase
Add, as oil pressure P1 > P2, ball valve is opened, and high pressure oil can flow out centre bore from ball valve, drop the oil pressure in spindle hole
It is low, it avoids that slide plate back pressure is excessive, that is, avoids the increase of slide plate head power consumption, when oil pressure is lower than P, ball valve can close again,
Guarantee that the oil pressure in spindle hole remains in the range of setting back pressure P, it is therefore prevented that slide plate back pressure under different rotating speeds
Fluctuation improves the reliability of compressor back pressure control；
Preferably, the spindle hole 1 include main aperture 11 and from 11 upper end of main aperture be connected two sections or more it is different
The stepped hole (main aperture is located at the section on the lower side of spindle hole, stepped hole is located at spindle hole section on the upper side) of internal diameter, and institute
At the position for stating the first stepped hole 12 that valve body 41 is located in the stepped hole, and first stepped hole is top aperture ratio lower part
The big hole in aperture, can be locked to by gravity when the valve body 41 moves downward at the position of first stepped hole 12.It is logical
The structure type of setting stepped hole is crossed, is limited to this when effectively can from top to bottom move valve body by the effect of gravity
Ladder hole location plays the role of fixed valve body, prevents it from sliding downwards；Since flow direction oily in spindle hole is
From the bottom to top, if then upward oil pressure can overcome it is the effect of the elastic force of elastic parts and the effect of valve body gravity and (but logical
Often valve body gravity is smaller for oil pressure and elastic force, generally can be ignored), then it can push valve body, Jin Ertong open
It crosses plug cock discharge and carries out pressure release.
Preferably, first stepped hole 12 be in axial direction from top to bottom internal diameter be gradually reduced, along axial cross section
Shape at bell shape round platform hole.This is the specific and preferred structure type of the first stepped hole of the invention, passes through loudspeaker
The setting form of the rotary table pore structure of mouth-shaped can play the role of a guiding and transition to the axial movement of valve body,
Enabling valve body, to be preferably ball valve be slipped to middle part from the position at edge, the coming oil to block lower section, and it is due to play valve body
The effect of blocking, and by round platform hole bottom diameter set smaller than the diameter of ball valve, effectively ball valve can be made by card
Set on round platform hole lower end position and be unlikely to slide downwards.
Preferably, the stepped hole further includes the spring receiving hole 13 for accommodating the elastic parts 42, and the spring accommodates
13 upper end of hole connects with 3 lower end of plug cock, lower end connects with first stepped hole 12, and the spring receiving hole 13 is edge
Axial internal diameter cylindrical hole all the same, its internal diameter are identical as the internal diameter of the round platform hole upper end.By spring receiving hole can
The elastic parts (preferably spring) that lower end is connected with valve body (preferably ball valve) is accommodated therein and does axial stretching fortune wherein
It is dynamic, it cannot up be moved again since spring upper end is connected on plug cock, be the compression of elastomeric element and then generate corresponding elasticity
Power provides condition.
Preferably, the stepped hole further includes connecting positioned at the round platform hole lower end and with the round platform hole cylindrical
Transitional pore 14, the internal diameter of the transitional pore 14 is identical as the internal diameter of the round platform hole lower end, and is less than the internal diameter of the main aperture 11.
The transitional pore play the role of being made so that from the oil on the main aperture stream of lower end by the adjustment effect of transitional pore progress adaptability
Oil pressure oil speed can reach oil pressure caused by identical with round platform hole lower end surface pipeline section product and oil speed, reduce oil due to
Flow section cataclysm and the case where generate pressure, energy loss.
The present invention preferably by installation spring and ball valve on spindle hole, controls the oil pressure in spindle hole,
It can guarantee that compressor realizes identical back pressure at different frequencies, reduce back-pressure wave caused by changing due to oil pump pump oil amount
It is dynamic, and it is able to achieve in the compressor slow-speed of revolution by ball-and-spring valve that provide enough back pressures oily, guarantee the reliability of back pressure.
Ball-and-spring valve device of the present invention is provided entirely on spindle hole, it may be assumed that the centre bore of the main shaft be multistage not
With the centre bore of internal diameter, the intensity requirement of main shaft can guarantee again under the premise of being able to achieve logical oil, ball valve is arranged in main-shaft core
At the speaker hole of hole upper end, spring at front end is contacted with ball valve, and spring tail end is realized by valve oil plug and limited, and valve oil plug is solid by screw thread
It is scheduled on main shaft upper end, the size relation of ball valve switched depending on the oil pressure of spindle hole and the precompression of spring is entire to fill
It sets that structure is simple, will not cause excessive interference to compressor arrangement, it is easy to accomplish in technique, and without complicated control system；
Spring initial length of the present invention is determined by required back pressure, after determining slide plate back pressure and spring rate, is led to
Crossing formula: F=KX (L: back pressure, K: spring rate, X: length) can find out the initial decrement of spring, Jin Erke
To determine that ball valve at a distance from valve oil plug, to guarantee the initial compression amount of spring by limit, that is, has determined slide plate back pressure P2,
The method of determination of back pressure P2 is simple and reliable；
For the present invention when compressor low speed is run, oil pump pump oil amount is smaller, and the oil pressure P1 of spindle hole can be lower at this time,
P1 < P2 at this time, the i.e. oil pressure of spindle hole are lower than spring back-pressure, and ball valve is in close state at this time, the oil of spindle hole
Back pressure slot all can be entered from radial hole, that is, ensure that also can guarantee that enough oil masses enter back in compressor lower-speed state
The phenomenon that pressing, avoiding back pressure low on fuel of the traditional scheme in compressor low speed, low centrifugal force.
As shown in Fig. 6 a- Fig. 6 d, it is preferable that the plug cock 3 is telescoping structure, including being located at capable of accommodating for its underpart
Accommodation space 31 that the elastic parts 42 enters and at its upper end for against the upper end of the elastic parts
32.By setting telescoping structure, it can be effectively formed the accommodation space 31 for accommodating elastic parts and entering, and pass through upper end
Abutment action, enable elastic parts to generate downward pressing force by upper end, thus generate needed for elastic force, be
Stable back pressure is provided and provides condition.
Preferably, the upper end of the plug cock 3 be provided be connected with the accommodation space 31 can be discharged oil overflow
Portal 33, the aperture of 31 cylindrical form of accommodation space and the overfolw hole 33 is less than the diameter of the accommodation space 31.
By the way that the overfolw hole being connected with accommodation space is arranged in plug cock upper end, the oil that can will exceed back pressure value is discharged by plug cock
Outside main shaft, to reduce to the adverse effect of compressor other component, and overfolw hole aperture be less than accommodation space diameter be for
Spring is safely resisted against below upper end, avoids stretching out from overfolw hole and not having elastic force, further
Preferably, the diameter of spring is greater than the diameter of overfolw hole.
Preferably, the peripheral outer wall of the telescopic plug cock 3 is provided with external screw thread 34,1 upper end of spindle hole
Inner wall on be provided with the internal screw thread 15 of the effect that can match with the external screw thread.Pass through plug cock radial outside (i.e. peripheral outer wall)
The internal screw thread of external screw thread and spindle hole the inner wall setting of setting, the mode that can be effectively connected through a screw thread plug cock are consolidated
Due to the upper end of the main shaft, while the oil to move upwards provides pressure release resistance, it is ensured that solid to applying to valve module
The effect of elastic force is determined, to effectively generate the oil of stable back-pressure.
It preferably, further include the oil pump connector 103 that can be carried out matching with oil pump and connect for being set to main shaft lower end.Pass through
Main shaft can be effectively attached with oil pump by oil pump connector, and the oil generated in oil pump is pumped to the master in main shaft
In axis center hole, thus generate the effect of corresponding back pressure, and play the role of lubrication, cooling etc..
The present invention also provides a kind of compressors comprising compressor main shaft above-mentioned.By in spindle hole, plug cock
Valve module is arranged in position between main shaft radial direction oil hole, so that opening valve module when oil pressure is greater than valve module back pressure to let out
Pressure, when oil pressure is less than valve module back pressure, shut-off valve assembly stops pressure release, enables in the case where the speed of mainshaft is inconsistent
The back pressure for eventually entering into the back pressure oil of main shaft radial direction oil hole, which can also reach, to be stablized, will not generate back-pressure surges, will not be due to back pressure
It is too small and for shortage of oil, while will not it is excessive due to back pressure and cause from plug cock upper end be lost and make for shortage of oil or back
Press through the case where pressure power consumption that is big and entering cylinder (preferably slide plate head) increases and compressor efficiency is caused to reduce；?
When the operation of compressor low speed, low centrifugal force, also can guarantee that sufficient oil mass enters main shaft radial direction oil hole, guarantee sufficient back pressure,
Sufficient back pressure oil is provided.
Due to using back pressure control mode of the invention, the spring rate by controlling ball-and-spring valve, which is able to achieve, is managed
The oil pressure in spindle hole thought, i.e. realization back-pressure value design control.In addition, can guarantee and pressing by ball-and-spring valve
Contracting machine slide plate back pressure value when each frequency band is run is certain, reduce slide plate back-pressure surges, and compressor low speed operation, it is low from
When mental and physical efforts, guarantee has enough oil masses to enter main shaft radial direction oil hole, guarantees sufficient back pressure.
Preferably, the compressor is sliding-vane compressor.This is the preferred constructive form of compressor of the invention, can
It further preferably realizes and precise and stable control is carried out to the back pressure of sliding-vane compressor.
If Fig. 1 is pump assembly explosive view of the present invention, component includes plug cock 3, spring 421, ball valve 411, main shaft 5, cylinder
8, the parts such as upper flange 6, lower flange 7, lower cover plate 10, oil pump 100, slide plate, screw 102.If Fig. 2 is pump housing section view of the invention
Figure, when compressor operating, main shaft rotation drives operation of oil pump pump oil, and oil sucks and be discharged into spindle hole by oil pump, in
Oily centrifugalization and oil pump back pressure in heart hole enter main shaft radial direction oil hole, finally enter slide plate back pressure by clearance channel
Slot provides back pressure for slide plate.
It is specific:
Valve oil plug of the present invention such as Fig. 6 a-6d, is the centre bore of fuel feeding circulation among it, and centre bore has in difference
The step surface of two sections of diameter, formation is used for limit spring tail portion, and valve oil plug Basolateral is tapped with the screw thread connecting with main shaft, valve oil
End is one section of square structure, the structure that clamping is tightened when being for installing beyond the Great Wall；
Spring and ball valve of the present invention such as Fig. 7 a-7b, ball valve 411 are an entity steel balls, and spring is a kind of head receipts
The spring of degree of lip-rounding formula, closing up to be formed with ball valve outer diameter cooperates, and can guarantee that spring can withstand ball valve and be detached from without skidding, spring
Tail portion is planar ends, and valve oil plug is facilitated to be closely fitted；
Main shaft of the present invention such as Fig. 8 a-8c, main shaft offer spindle hole, and the centre bore is multistage different inner diameters
Hole, wherein topmost have for valve oil plug installation threaded hole, threaded hole lower end have place ball valve flared hole, in compressor
The bottom end of centre bore is connected to oil pump oil outlet when work, is respectively opened up on main shaft major and minor axis there are two radial direction oil hole, in main shaft
There is the oil pump connector with oil pump connection in bottom end, and such as partial enlarged view, D type structure is convenient to be connect with oil pump；
Oil pump of the invention is common gear oil pump, and oil pump is cooperated by the oil pump connector in D type hole and main shaft, and is led to
It crosses main shaft and drives rotation pump oil.
Such as Fig. 2 pump housing cross-sectional view, when compressor is run, motor drives main shaft rotation (motor is not shown), and main shaft passes through bottom
The oil pump connector at end drives oil pump rotation, and oil sump (oil sump is not shown) is inserted into oil pump bottom end, and pump oil, oil sump are realized in oil pump rotation
In oil spindle hole is entered by oil pump pump oil.
When the oil pressure P1 of main-shaft core oilhole is less than the pressure P2 that spring generates, i.e. setting back pressure, such as Fig. 3, ball valve is protected
Closed state is held, the oil of centre bore all can enter back pressure oil groove by main shaft radial direction oil hole, will not be lost from ball valve, guarantee low
Fuel delivery when revolving speed, and the oil pressure of spindle hole can slowly increase under the lasting pump oil of oil pump, be finally reached setting
Back pressure P2 realizes the control to slide plate back pressure.
When compressor operating frequency is higher, oil pump feed is rapid, and the oil pressure P1 of spindle hole can be greater than P2, at this time such as
Fig. 4-5, ball valve can be opened, and the oil of spindle hole can flow out centre bore from open ball valve two sides, to reduce centre bore
Oil pressure keeps the oil pressure of centre bore.
The invention has the characteristics that
A. the present invention need to can only be designed at a distance from valve oil plug by control spring rate and main shaft horn mouth and be wanted
The slide plate back pressure arrived, principle are simple and reliable；
A. ball-and-spring valve device of the present invention is provided entirely on spindle hole, it may be assumed that the centre bore of the main shaft is multistage
The centre bore of different inner diameters, can guarantee the intensity requirement of main shaft again under the premise of being able to achieve logical oil, and ball valve is arranged in main shaft
At the speaker hole of heart hole upper end, spring at front end is contacted with ball valve, and spring tail end is realized by valve oil plug and limited, and valve oil plug passes through screw thread
It is fixed on main shaft end, the size relation of ball valve switched depending on the oil pressure of spindle hole and the precompression of spring, entirely
Apparatus structure is simple, will not cause excessive interference to compressor arrangement, easy to accomplish in technique, and without complicated control system
System；
B. spring initial length of the present invention is determined by required back pressure, after determining slide plate back pressure and spring rate,
Passing through formula: F=KX (L: back pressure, K: spring rate, X: length) can find out the initial decrement of spring, in turn
It can determine that ball valve at a distance from valve oil plug, to guarantee the initial compression amount of spring by limit, that is, has determined slide plate back pressure
The method of determination of P2, back pressure P2 are simple and reliable；
C. for the present invention in the operation of compressor low speed, oil pump pump oil amount is smaller, and the oil pressure P1 of spindle hole can be compared at this time
Low, P1 > P2, the i.e. oil pressure of spindle hole are lower than spring back-pressure at this time, and ball valve is in close state at this time, spindle hole
Oil all can enter back pressure slot from radial hole, that is, ensure that also can guarantee that enough oil masses enter back in compressor lower-speed state
The phenomenon that pressing, avoiding back pressure low on fuel of the traditional scheme in compressor low speed, low centrifugal force；
D. in compressor high-speed cruising, oil pump pump oil amount greatly increases the present invention, spindle hole oil pressure meeting at this time
Increase, as oil pressure P1 > P2, ball valve is opened, and high pressure oil can flow out centre bore from ball valve, drop the oil pressure in spindle hole
It is low, it avoids that slide plate back pressure is excessive, that is, avoids the increase of slide plate head power consumption, when oil pressure is lower than P, ball valve can close again,
Guarantee that the oil pressure in spindle hole remains in the range of setting back pressure P, it is therefore prevented that slide plate back pressure under different rotating speeds
Fluctuation improves the reliability of compressor back pressure control.
Oil pump type and pump oil mode of the present invention do not limit, and can use other types oil pump, can also use its other party
Formula pump oil；It plug cock form of the present invention and is not limited with the connection type of main shaft, as long as being able to achieve the limit to spring.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.With
It is only the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
Under the premise of being detached from the technology of the present invention principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this
The protection scope of invention.
Claims (14)
1. a kind of compressor main shaft, it is characterised in that: including the spindle hole (1) on its interior in axial direction opened up,
And the main shaft radial direction oil hole (2) being radially connected with the spindle hole (1)；
Be provided with plug cock (3) on the top of the spindle hole (1), and in the spindle hole (1), be located at the oil
Valve module (4) are additionally provided between plug (3) and the main shaft radial direction oil hole (2)；
The valve module is set to: when the oil pressure in the spindle hole is greater than back pressure provided by the valve module,
The valve module is opened, to allow oil to flow to the plug cock (3) from the spindle hole；When in the spindle hole
When oil pressure is less than back pressure provided by the valve module, the valve module is closed, to prevent oil from flowing from the spindle hole
To the plug cock (3).
2. compressor main shaft according to claim 1, it is characterised in that: the valve module (4) includes valve body (41) and bullet
Property component (42), the valve body (41) can along main shaft move axially with open the spindle hole (1) flow path and close should
Flow path；The lower end of the elastic parts (42) is connected on the valve body (41), upper end is connected to the plug cock (3).
3. compressor main shaft according to claim 2, it is characterised in that: the valve body (41) is ball valve (411).
4. the compressor main shaft according to one of claim 2-3, it is characterised in that: the elastic parts (42) is spring
(421), the stiffness coefficient of the spring is K, and the displacement compressed opposite to each other by the valve body (41) and the plug cock (3) is fixed
Justice is X, the spring back-pressure power F=K*X of generation.
5. the compressor main shaft according to one of claim 2-3, it is characterised in that: the spindle hole (1) includes master
The stepped hole in hole (11) and two sections or more different inner diameters being connected with the main aperture (11) upper end, and the valve body (41) is located at institute
At the position for stating the first stepped hole (12) in stepped hole, and first stepped hole be top aperture ratio lower part aperture it is big
Hole, the valve body (41) can be locked at the position of first stepped hole (12) when moving downward.
6. compressor main shaft according to claim 5, it is characterised in that: first stepped hole (12) is vertically extremely
Round platform hole that lower internal diameter is gradually reduced, along axial cross section shape at bell shape.
7. compressor main shaft according to claim 6, it is characterised in that: the stepped hole further includes accommodating the elastic group
The spring receiving hole (13) of part (42), spring receiving hole (13) upper end connects with the plug cock (3) lower end, lower end with it is described
First stepped hole (12) connects, and the spring receiving hole (13) is the internal diameter of cylindrical hole, its internal diameter and the round platform hole upper end
It is identical.
8. the compressor main shaft according to one of claim 6-7, it is characterised in that: the stepped hole further includes positioned at described
Round platform hole lower end and the cylindrical transitional pore (14) to connect with the round platform hole, the internal diameter and the circle of the transitional pore (14)
The internal diameter of platform hole lower end is identical, and is less than the internal diameter of the main aperture (11).
9. the compressor main shaft according to one of claim 2-3,6-7, it is characterised in that: the plug cock (3) is telescopic
Structure, including being located at the accommodation space (31) of capable of the accommodating of its underpart elastic parts (42) entrance and disposed thereon
End is used for against the upper end (32) of the elastic parts.
10. compressor main shaft according to claim 9, it is characterised in that: the upper end of the plug cock (3) is provided with and institute
State the overfolw hole (33) that oil can be discharged that accommodation space (31) is connected, accommodation space (31) cylindrical form and institute
The aperture for stating overfolw hole (33) is less than the diameter of the accommodation space (31).
11. compressor main shaft according to claim 9, it is characterised in that: the peripheral outer wall of the telescopic plug cock (3)
It is provided with external screw thread (34), is provided with the effect that can match with the external screw thread on the inner wall of spindle hole (1) upper end
Internal screw thread (15).
12. according to claim 1-3, compressor main shaft described in one of 6-7,10-11, it is characterised in that: further include being set to
The oil pump connector (103) that can be carried out matching with oil pump and connect of main shaft lower end.
13. a kind of compressor, it is characterised in that: including compressor main shaft described in one of claim 1-12.
14. compressor according to claim 13, it is characterised in that: the compressor is sliding-vane compressor.
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| CN201710107704.2A CN106762660B (en) | 2017-02-27 | 2017-02-27 | A kind of compressor main shaft and the compressor with it |
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| CN201710107704.2A CN106762660B (en) | 2017-02-27 | 2017-02-27 | A kind of compressor main shaft and the compressor with it |
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| CN106762660A CN106762660A (en) | 2017-05-31 |
| CN106762660B true CN106762660B (en) | 2019-03-15 |
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| CN201710107704.2A Active CN106762660B (en) | 2017-02-27 | 2017-02-27 | A kind of compressor main shaft and the compressor with it |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110966194B (en) * | 2019-10-16 | 2020-11-24 | 珠海格力电器股份有限公司 | Compressor and sliding vane compressor backpressure control structure |
| CN111963435B (en) * | 2020-07-24 | 2022-08-05 | 珠海格力电器股份有限公司 | Compressor and air conditioner |
| CN111963433B (en) * | 2020-07-24 | 2022-08-05 | 珠海格力电器股份有限公司 | Compressor and air conditioner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206503719U (en) * | 2017-02-27 | 2017-09-19 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor main shaft and the compressor with it |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001003866A (en) * | 1999-06-18 | 2001-01-09 | Fujitsu General Ltd | Hermetic compressor |
| TW200406547A (en) * | 2002-06-05 | 2004-05-01 | Sanyo Electric Co | Internal intermediate pressure multistage compression type rotary compressor, manufacturing method thereof and displacement ratio setting method |
| CN202250875U (en) * | 2011-10-25 | 2012-05-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Rolling rotor type compressor |
| CN103967796B (en) * | 2014-05-06 | 2017-02-01 | 广东美芝制冷设备有限公司 | Crankshaft for rotary compressor, manufacturing method of crankshaft and rotary compressor |
| CN106286306B (en) * | 2015-05-27 | 2019-12-27 | 珠海格力电器股份有限公司 | Horizontal sliding vane compressor and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206503719U (en) * | 2017-02-27 | 2017-09-19 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor main shaft and the compressor with it |
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