CN207349068U - Screw compressor and there is its air conditioner - Google Patents
Screw compressor and there is its air conditioner Download PDFInfo
- Publication number
- CN207349068U CN207349068U CN201721302935.0U CN201721302935U CN207349068U CN 207349068 U CN207349068 U CN 207349068U CN 201721302935 U CN201721302935 U CN 201721302935U CN 207349068 U CN207349068 U CN 207349068U
- Authority
- CN
- China
- Prior art keywords
- drainage channel
- screw compressor
- stent
- orbiter
- fixed scroll
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model provides a kind of screw compressor and has its air conditioner, and wherein screw compressor includes：It is provided with the housing of shoe cream room, the stent being arranged in housing, fixed scroll, orbiter and back pressure cavity.Logical circulation road was equipped between shoe cream room and back pressure cavity, crossing logical circulation road includes the 3rd drainage channel and connector of the first drainage channel in housing, the second drainage channel on fixed scroll, the second drainage channel of connection and back pressure cavity, the first end of connector is arranged in the second drainage channel, the second end of connector is arranged in the 3rd drainage channel, and connector is in hollow structure.The technical solution of the utility model efficiently solves the problem of clearance leakage of lubricating oil, refrigerant between fixed scroll and bracket end face is to suction side in the prior art.
Description
Technical field
Field of air conditioning is the utility model is related to, in particular to a kind of screw compressor and there is its air conditioner.
Background technology
In screw compressor, compression chamber gas can produce one after being compressed makes orbiter away from fixed scroll
Power.The separating force can to produce axial gap between orbiter and fixed scroll, so as to cause compression chamber to leak.This external pressure
The running gear of contracting machine such as bearing etc. needs to introduce lubricating oil to ensure its reliable operating.It is to solve the above problems, public in patent
The number of opening is in the patent of invention of CN106401952A, by forming the back pressure between exhaust and air-breathing at the orbiter back side
Fluid, offsets the separating force that compression chamber produces and orbiter is pressed to fixed scroll, so as to suppress the leakage of compression chamber；At the same time
Back pressure cavity is introduced after lubricating oil is throttled by drainage channel from compressor air-discharging side, so as to lubricate the bearing in back pressure cavity
Deng moving component.However, there are following defect for above-mentioned patent：(1) when back pressure is larger, orbiter can push away fixed scroll
Stent, so drainage channel export, refrigerant, lubricating oil can along the clearance leakage between fixed scroll and bracket end face to suction
Gas side；(2) due to boss out-of-flatness on the inside of stent, on the inside of flexible member and stent between boss regional area there may be
Gap, so as to cause the fluid in back pressure cavity to be leaked to suction side.Due to the presence of above-mentioned leakage, it can cause compressor air suction quality
Flow is reduced, and performance reduces.(3) when drainage channel throttling passage area is larger, throttling is inadequate, enters back pressure cavity from exhaust side
Fluid is excessive, the fluid of back pressure cavity and then enters compression chamber by the back pressure hole on orbiter, causes compression chamber pressure rise,
Compression power consumption increase.
Utility model content
The utility model aims to provide a kind of screw compressor and has its air conditioner, to solve to lubricate in the prior art
The problem of oil, clearance leakage of the refrigerant between fixed scroll and bracket end face are to suction side.
To achieve these goals, one side according to the present utility model, there is provided a kind of screw compressor, including：
Housing, housing include casing and the nose cover that is connected with casing, the first air entry are provided with casing, and the is provided with nose cover
One exhaust outlet and the shoe cream room connected with first row gas port；Fixed scroll and orbiter, are arranged in casing, on fixed scroll
It is provided with the second air entry connected with the first air entry and the second exhaust port connected with first row gas port；Stent, is set
In the side of orbiter the first air entry of direction；Wherein, screw compressor further include connection screw compressor back pressure cavity and
The mistake logical circulation road of shoe cream room, cross logical circulation road include be arranged in nose cover the first drainage channel, be arranged on fixed scroll
Second drainage channel and the second drainage channel of connection and the 3rd drainage channel of back pressure cavity；Cross in logical circulation road and be additionally provided with connection
Part, the first end of connector are arranged in the second drainage channel, and the second end of connector is arranged in the 3rd drainage channel, connection
Part is in hollow structure.
Further, connector is connecting pin.
Further, the first end of connecting pin is interference fitted with fixed scroll, between the second end of connecting pin and the stent
Gap coordinates, alternatively, the first end of connecting pin and fixed scroll clearance fit, second end and the stent of connecting pin are interference fitted.
Further, screw compressor further includes gasket, and gasket is arranged between orbiter and stent, and connector is worn
In gasket.
Further, fastener is additionally provided with stent, fastener can pass through gasket to limit the shifting of gasket opposite brackets
It is dynamic.
Further, fastener includes major diameter section and path section, formed with step surface, fastening between major diameter section and path section
Gasket is connected on stent by part by step surface.
Further, orbiter is included towards the end face of stent and the holding tank that is arranged on end face, is set in holding tank
Floating seal ring is equipped with, floating seal ring is used to seal back pressure cavity.
Further, throttle structure is provided with least one in the second drainage channel and the 3rd drainage channel.
Further, throttle structure is sold for throttling, and throttling pin includes head and bar portion, head and the second drainage channel or the
The inner wall of three drainage channels is in contact, and the diameter of bar portion is less than the internal diameter of the second drainage channel or the 3rd drainage channel, on head
It is provided with interconnecting part.
Further, throttling pin further includes the connecting portion for being connected to head and bar portion, and the diameter of connecting portion is less than bar portion
Diameter.
Further, head is interference fitted with the second drainage channel and/or the 3rd drainage channel.
Further, throttle structure is impedance screw.
Another aspect according to the present utility model, there is provided a kind of air conditioner, including compressor, compressor are above-mentioned whirlpool
Revolve compressor.
Further, air conditioner is on-board air conditioner.
Using the technical solution of the utility model, refrigerant enters casing from the first air entry and is flowed into from the second air entry
Compression chamber between fixed scroll and orbiter.By the refrigerant that compresses to a certain degree by backpressure passage from compression chamber into
Enter back pressure cavity, to provide the power being adjacent to fixed scroll to orbiter.By the refrigerant that compresses completely from second exhaust port
Discharge flows to the first row gas port on nose cover.Last gaseous refrigerant is flowed out from first row gas port, the lubrication that refrigerant is taken out of
Oil and a small amount of refrigerant are pooled in shoe cream room and are back to by crossing logical circulation road in back pressure cavity, are provided for scroll compressor structure
Lubrication.When crossing senior general's orbiter when Pressure in Back-pressure Cavity and push away stent, and then causing the fixed scroll to be separated with stent, hollow connection
The both ends of part can be still remained in the second drainage channel and the 3rd drainage channel, to ensure that logical circulation road was completely continuous,
Lubricating oil and refrigerant is flowed to back pressure cavity, avoid lubricating oil and refrigerant between fixed scroll and the end face of stent
Clearance leakage influences compressor performance to suction side.
Brief description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
New schematic description and description is used to explain the utility model, does not form the improper restriction to the utility model.
In the accompanying drawings：
Fig. 1 shows the broken section structure diagram of the embodiment one of screw compressor according to the present utility model；
Fig. 2 shows close-up schematic view at the A of the screw compressor of Fig. 1；
Fig. 3 shows the decomposition texture signal of the stent of the screw compressor of Fig. 1, gasket, orbiter and fixed scroll
Figure；
Fig. 4 shows the overlooking the structure diagram of the gasket of Fig. 3；
Fig. 5 shows close-up schematic view at the B of the screw compressor of Fig. 1；
Fig. 6 shows the schematic cross-sectional view of another floating seal ring；
Fig. 7 shows the broken section structure diagram of the embodiment two of screw compressor according to the present utility model；
Fig. 8 shows close-up schematic view at the C of the screw compressor of Fig. 7；
Fig. 9 shows close-up schematic view at the D of the screw compressor of Fig. 7；
Figure 10 shows the structure diagram for the pin that throttles in the screw compressor of Fig. 9；
Figure 11 shows the refrigerant leakage ratio schematic diagram of the screw compressor of Fig. 7；
Figure 12 shows the broken section structure diagram of the embodiment three of screw compressor according to the present utility model；
Figure 13 shows the decomposition texture schematic diagram of the stent of the screw compressor of Figure 12, orbiter and fixed scroll；
And
Figure 14 shows the broken section structure diagram of the example IV of screw compressor according to the present utility model.
Wherein, above-mentioned attached drawing is marked including the following drawings：
1st, casing；2nd, stent；2a, pin hole；2b, supporting surface；2c, pin hole；3rd, orbiter；3c, end face；3d, holding tank；
4th, fixed scroll；4e, the second air entry；5th, nose cover；6th, rubber seal；7th, sealing ring；8th, gasket；9th, bent axle；10th, it is elastic
Part；11st, floating seal ring；12nd, bearing；13rd, impedance screw；14th, connecting pin；15th, fastener；15a, path section；15b, major diameter
Section；16th, throttling pin；16a, bar portion；16b, connecting portion；16c, head；17th, seal member；101st, the first suction muffler；102nd, second
Suction muffler；103rd, the 3rd suction muffler；200th, compression chamber；201st, discharge chamber；202nd, exhaust passage；203rd, shoe cream room；301st, second
Drainage channel；302nd, recirculation hole；303rd, the 3rd drainage channel；304th, backpressure passage；401st, back pressure cavity.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, the technical solution in the embodiment of the present application is carried out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the application and its application or makes
Any restrictions.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, shall fall in the protection scope of this application.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the component and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Up to the unlimited scope of the present application processed of formula and numerical value.At the same time, it should be appreciated that for the ease of description, each portion shown in attached drawing
The size divided not is to be drawn according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely exemplary, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms is represented in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It need not be further discussed in figure.
Embodiment one：
As shown in Figure 1, the screw compressor of embodiment one includes housing, stent 2, fixed scroll 4 and orbiter 3.Its
In, housing includes casing 1 and nose cover 5, and nose cover 5 is connected on casing 1.The first air entry, nose cover are provided with casing 1
First row gas port and the shoe cream room 203 connected with first row gas port are provided with 5.Fixed scroll 4 and orbiter 3 are arranged on machine
In shell 1, the second air entry 4e connected with the first air entry is provided with fixed scroll 4 and is connected with first row gas port
Two exhaust outlets, form compression chamber 200 between fixed scroll 4 and orbiter 3.Stent 2 is arranged on orbiter 3 and is inhaled towards first
The side of gas port, forms back pressure cavity 401 between stent 2 and orbiter 3, connection 200 He of compression chamber is provided with orbiter 3
The backpressure passage 304 of back pressure cavity 401.Screw compressor further includes the mistake logical circulation road of connection shoe cream room 203 and back pressure cavity 401, mistake
The first drainage channel that logical circulation road includes being arranged in nose cover 5, the second drainage channel 301 for being arranged on fixed scroll 4 with
And the second drainage channel 301 of connection and the 3rd drainage channel 303 of back pressure cavity 401.Cross and connector is additionally provided with logical circulation road, even
The first end of fitting is arranged in the second drainage channel 301, and the second end of connector is arranged in the 3rd drainage channel 303, even
Fitting is in hollow structure.
Using the technical solution of the present embodiment, refrigerant enters casing 1 from the first air entry and is flowed from the second air entry 4e
Into the compression chamber 200 between fixed scroll 4 and orbiter 3.Pass through backpressure passage 304 by the refrigerant compressed to a certain degree
Enter back pressure cavity 401 from compression chamber 200, to provide the power being adjacent to fixed scroll 4 to orbiter 3.By what is compressed completely
Refrigerant flows to the first row gas port on nose cover 5 from second exhaust port discharge.Last gaseous refrigerant is from first row gas port stream
Go out, the lubricating oil and a small amount of refrigerant that refrigerant is taken out of are pooled in shoe cream room 203 and are back to back pressure cavity by crossing logical circulation road
In 401, lubrication is provided for scroll compressor structure.Senior general's orbiter 3 is crossed when 401 pressure of back pressure cavity and pushes away stent 2, and then is led
Fixed scroll 4 is caused when being separated with stent 2, the both ends of hollow connectors, which remain unchanged, can remain in the second drainage channel 301 and the
In three drainage channels 303, to ensure that logical circulation road was completely continuous, lubricating oil and refrigerant is flowed to back pressure cavity 401, avoid
Lubricating oil and refrigerant influence compressor from the clearance leakage between the end face of fixed scroll 4 and stent 2 to suction side
Energy.
With the operation of compressor, refrigerant and lubricating oil enter in back pressure cavity 401 from logical circulation road is crossed, and make back pressure cavity 401
Back pressure Pd constantly change, the compression chamber 200 connected with back pressure cavity 401 by backpressure passage 304 also can with fixed scroll 4 and
The change of the relative position of orbiter 3 and change.The pressure of back pressure cavity 401 is likely to occur the pressure more than compression chamber 200
Situation, at this time backpressure passage 304 play the role of adjusting the pressure of back pressure cavity 401, unnecessary fluid is discharged into back pressure cavity
401, the pressure of back pressure cavity 401 is maintained in the reasonable scope.
As shown in Figure 1, nose cover 5 is placed and secured in one end of casing 1, and fixed scroll 4 and stent 2 are fixed
On casing 1.Bent axle 9 is inserted into inside stent 2, and is sealed therebetween by seal member 17.Casing 1 and nose cover 5 it
Between be used to placing fixed scroll 4 and the cavity of orbiter 3 and stent 2 and form the first suction muffler 101, in the first suction muffler 101
Pressure be pressure of inspiration(Pi) Ps.
Fixed scroll 4 has substrate 4a, and scrollwork tooth 4b has been extended to form along a lateral orbiter 3 of substrate 4a.It is dynamic
Scroll plate 3 has substrate 3a, extends to form scrollwork tooth 3b, scrollwork tooth 3b along the side of substrate 3a and scrollwork tooth 4b engages to be formed
Multiple compression chambers 200, as orbiter 3 rotates, compression chamber 200 is gradually mobile to center and volume is gradually reduced, then gas
Body is compressed.Space shape beyond the scrollwork tooth 3b and substrate 3a of orbiter 3, within the side wall of fixed scroll 4 and substrate 4a
Into the second suction muffler 102.
The physical property such as the temperature of refrigerant, viscosity, density in lubricating oil and the second suction muffler 102 in shoe cream room 203
Differ, if two media mixes state when influence refrigerant is entered compression chamber 200 in the second suction muffler 102,
There is deviation in the preset state of state and compressor in design when making the refrigerant enter compression chamber 200, influences compressor
Performance, and then influence follow-up work process.And the connector of the present embodiment reduces lubricating oil and is leaked to the second suction muffler 102,
Reduce above-mentioned influence.
Preferably, the connector of the present embodiment is preferably connecting pin 14.The connecting pin 14 of the present embodiment is in hollow tubular, knot
Structure is simple, is readily produced.As shown in Fig. 2, the outlet of the second drainage channel 301 is arranged on towards on the end face of the side of stent 2,
And outlet section is provided with pin hole 4f.The entrance of 3rd drainage channel 303 is opened in opposite with the outlet of the second drainage channel 301
The position answered, the entrance of the 3rd drainage channel 303 are provided with pin hole 2c.In the first end insertion pin hole 4f of connecting pin 14, even
In the second end insertion pin hole 2c of outbound 14, the recirculation hole 302 in connecting pin 14 can be by the second drainage channel 301 and the 3rd drainage
The connection of passage 303 is got up.
It is further preferred that as shown in Figures 2 and 3, the first end of the connecting pin 14 of the present embodiment and the pin of fixed scroll 4
Hole 4f be interference fitted, second end insertion stent 2 pin hole 2c in and with 2 clearance fit of stent, the outside diameter d 1 and pin of connecting pin 14
The internal diameter d2 of hole 2c meets d2-d1≤0.1mm, is conducive to the sealing of logical circulation road, prevents oil leak into the second suction muffler
201。
Further, as shown in Figure 1 to Figure 3, the screw compressor of the present embodiment further includes gasket 8, and gasket 8 is arranged on dynamic
Between scroll plate 3 and stent 2, connector is threaded through in gasket 8.Stent 2 towards the side of orbiter 3 be a smooth support
Face 2b, gasket 8 are preferably to use wear-resistant metal material.As shown in figure 4, the gasket 8 of the present embodiment can be made into annular sheet or
Platy structure, causes to wear when sliding on stent 2 to avoid orbiter 3 to supporting surface 2b.
The gasket 8 of sheet or tabular coordinates with flat support face 2b, when orbiter 3 is away from stent 2, gasket 8 and branch
Frame 2 still can keep being bonded.
Further, as shown in Figures 1 to 4, fastener 15,15 energy of fastener are additionally provided with the stent 2 of the present embodiment
It is enough to be moved through gasket 8 with limiting 8 opposite brackets 2 of gasket.Supporting surface 2b is evenly distributed with several pin hole 2a, gasket by the region of axial ray
The position of 8 respective pin hole 2a is provided with multiple through hole 8a, and fastener 15 is through through hole 8a and is fastened in pin hole 2a, with restriction pad
Piece 8 rotates or movement.
Preferably, fastener 15 is pin, and pin can also be with the cylinder on orbiter 3 while setting-up piece 8
Shape slot coordinates, and plays the function of preventing 3 rotation of orbiter.
Specifically, as shown in Figure 1, the fastener 15 of the present embodiment includes major diameter section 15b and path section 15a, path section 15a
Be fastened in pin hole 2a, the diameter of major diameter section 15b is more than the diameter of through hole 8a, between major diameter section 15b and path section 15a formed with
Gasket 8 is connected on stent 2 by step surface, fastener 15 by step surface.Propped up when orbiter 3 is remote under the action of pressure difference
During frame 2, gasket 8 keeps being bonded with supporting surface 2b.Preferably, path section 15a and pin hole 2a is interference fitted to realize fastening.It is optional
Ground, path section 15a and pin hole 2a can also be realized by helicitic texture and fastened.
Further, as shown in Figure 1, the orbiter 3 of the present embodiment further include towards stent end face 3c and be arranged on
Floating seal ring 11 is provided with holding tank 3d on the 3c of end face, holding tank 3d, floating seal ring 11 is used to seal back pressure cavity
401。
As shown in figure 5, floating seal ring 11 includes sealing ring and elastic component 10, elastic component 10 can strut sealing ring 7
Sealing ring 7 is bonded all the time with gasket 8, enable 11 compliant scroll disk 3 of floating seal ring sliding on the surface of gasket 8 together
It is dynamic, and the surface with gasket 8 contacts all the time, to realize the sealing between orbiter 3 and gasket 8.Preferably, ring-type holding tank
The cross-sectional width of 3d is slightly larger than the width of sealing ring 7.Gas in back pressure cavity 401 can enter holding tank 3d and sealing ring 7 it
Between gap in, make the pressure of sealing ring 7 everywhere radially identical, ensure the stability that is bonded with the side wall of holding tank 3d.It is close
The less material of wear-resisting and friction coefficient such as PTFE (polytetrafluoroethylene (PTFE)) generally can be selected in seal 7.
In other embodiments, floating seal ring 11 can also use the sealing ring or other structures shape of the structure such as Fig. 6
Formula is to realize sealing effect.As shown in fig. 6, the elastic component 10 of the floating seal ring 11 of this embodiment is arranged in sealing ring 7, use
To prop up the lip of sealing ring 7, lip and the 10 matched inner surface of elastic component of sealing ring 7 are obliquely installed, so that elastic component
10 provide radially outer power while sealing ring 7 are propped up to sealing ring 7, so that sealing ring 7 is adjacent to the side wall of holding tank 3d.
Further, as shown in Figure 1, being provided with throttle structure in second drainage channel 301 of the present embodiment.Throttle structure
The area of passage in the second drainage channel 301 is reduced, reduces the speed that lubricating oil passes back into back pressure cavity 401, reduces withdrawing oil
Amount.Avoid oil return from lubricating oil excessively occur and compression chamber 200 entered by backpressure passage 304, cause 200 pressure rise of compression chamber,
The problem of compressor compresses power consumption increase.
Preferably, as shown in Figure 1, the throttle structure of the present embodiment is impedance screw 13.Impedance screw 13 is chosen as standard
Interior hexagonal flush end holding screw, throttling is realized by the slight gap between internal and external threads.Throttle structure in other embodiments
It is not limited to the form of impedance screw.
In the present embodiment, as shown in Figure 1, the opposite side of the substrate 4a of fixed scroll 4 has extended to form boss 4c, boss
Groove 4d is provided with 4c, places rubber seal 6 in groove 4d, cover 5 and boss 4c clamp rubber seal 6 to form sealing
Area, so that the discharge chamber 201 inside boss 4c and the 3rd suction muffler 103 outside boss 4c be kept apart.Have on nose cover 5
The exhaust passage 202 of first row gas port and discharge chamber 201 is connected, the bottom of exhaust passage 202 is oil storage portion 203.
During compressor operation, refrigerant initially enters the first suction muffler 101 of compressor case 1, then passes through
Second air entry of fixed scroll 4 enters the second suction muffler 102.Refrigerant is compressed in compression chamber 200 and moved to center,
Then it is discharged to by the second exhaust port of fixed scroll 4 in discharge chamber 201, finally by the exhaust passage 202 on nose cover 5
Discharge compressor., can be by carrying when refrigerant enters rotation in exhaust passage 202, hits tube wall in exhaust passage 202
Lubricating oil separation comes out, and lubricating oil is gathered in the reserve 203 of bottom along tube wall under the effect of gravity, makes gaseous refrigerant and liquid
State lubricating oil separation.The refrigerant of lubricating oil and mixing in discharge pressure state enters the first drainage from reserve 203 and leads to
Road, the second drainage channel 301, in 301 entrance of the second drainage channel after the throttling of impedance screw 13, by recirculation hole 302 and
3rd drainage channel 303 eventually enters into back pressure cavity 401, lubricates bearing 12 and moving component in back pressure cavity 401.
Embodiment two：
As shown in Figure 7 to 10, the screw compressor of embodiment two and embodiment one difference lies in：With 14 phase of connecting pin
The structure and throttle structure of the pin hole 4f and pin hole 2c of cooperation.
Specifically, as shown in Figure 7 and Figure 8, the second end of the connecting pin 14 of embodiment two and the pin hole 2c interference of stent 2 are matched somebody with somebody
Close, first end insertion fixed scroll 4 pin hole 4f in and with 4 clearance fit of fixed scroll, the outside diameter d 1 and pin hole of connecting pin 14
The internal diameter d3 of 4f meets d3-d1≤0.1mm, when fixed scroll 4 is separated with stent 2, although might have lubricating oil and refrigeration
Gap of the agent between connecting pin 14 and pin hole 4f leaks out, but connecting pin 14 reduces leakage area, can reduce and leak into
The oil mass of two suction mufflers 201.
In the prior art, when the pressure in back pressure cavity 401 is larger, fixed scroll 4 can be pushed away stent by orbiter 3
2 supporting surface 2b, so that the first drainage channel 301 exports between 303 entrance of the second drainage channel, there are larger to let out
Gap is leaked, then the high-pressure fluid in drainage channel is leaked to suction side, causes hydraulic performance decline.In this patent, drainage channel
Interior high-pressure fluid first has to that, by the minim gap between connecting pin 14 and pin hole 4f or 2c, suction side could be entered.This is micro-
Small―gap suture can be controlled by the fit clearance of part, the typical outside diameter d 1=3.5mm set such as connecting pin, pin hole and pin
Gap d 2-d1=0.02mm, it is as shown in figure 11 to account for the ratio of compressor mass flow from the refrigerant of the clearance leakage, for
Using R410A refrigerants, discharge capacity 18cm3, rotating speed is the compressor of 3600rpm, under typical refrigeration and heating condition, its
The ratio of leakage is less than 1%.The leakage very little, therefore compressor performance will not be impacted.
As shown in Figure 9 and Figure 10, impedance screw of the throttle structure of the present embodiment in throttling 16 alternate embodiment one of pin,
Throttling pin 16 includes head 16c and bar portion 16a, head 16c and the inner wall of the second drainage channel 301 or the 3rd drainage channel 303
It is in contact, the diameter of bar portion 16a is less than the internal diameter of the second drainage channel 301, and interconnecting part is provided with the 16c of head.Cylinder
A part is cut on the 16c of head and forms interconnecting part, so that lubricating oil and refrigerant enter the second drainage channel 301 from interconnecting part,
Bar portion 16a reduces the area of passage in the second drainage channel 301, plays restriction effect.
Further, throttling pin 16 further includes the connecting portion 16b for being connected to head 16c and bar portion 16a, connecting portion 16b's
Diameter is less than the diameter of bar portion 16a.Connecting portion 16b plays equal liquid effect, makes by the lubricating oil of interconnecting part and refrigerant from section
The peripheral flow of pin 16 is flowed to back pressure cavity 401.
Preferably, the head 16c of the present embodiment is interference fitted with the second drainage channel 301, and throttling pin 16 is fixed on
In second drainage channel 301.
In other embodiments, throttle pin 16 or impedance screw can be arranged in the 3rd drainage channel 303, or the
Throttling pin 16 or impedance screw are all set in two drainage channels 301 and the 3rd drainage channel 303.It is corresponding, throttling pin 16
Head 16c is interference fitted with corresponding second drainage channel, 301 and/or the 3rd drainage channel 303.
Embodiment three：
As shown in Figure 12 and Figure 13, compared with embodiment two, the screw compressor of embodiment three eliminates gasket construction, and
The pin in embodiment two with step surface is substituted for the pin of cylinder accordingly.
In the present embodiment, floating seal ring 11 directly contacts realization sealing with the supporting surface 2b of stent.
Example IV：
As shown in figure 14, compared with embodiment one, impedance screw 13 is arranged on the 3rd by the screw compressor of example IV
In drainage channel 303, to realize throttling.
Present invention also provides a kind of air conditioner, includes compressor according to the air conditioner (not shown) of the present embodiment,
Compressor is the screw compressor of any of the above-described embodiment.The air conditioner of the present embodiment is with service life is long, performance is good, power consumption
The advantages of stablizing.
Further, the air conditioner of the present embodiment is on-board air conditioner.
It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：
Refrigerant enters casing from the first air entry and is flowed into from the second air entry between fixed scroll and orbiter
Compression chamber.Back pressure cavity is entered from compression chamber by backpressure passage by the refrigerant compressed to a certain degree, to be carried to orbiter
Feed to the power that fixed scroll is adjacent to.By the refrigerant compressed completely the first row flowed on nose cover is discharged from second exhaust port
Gas port.Last gaseous refrigerant is flowed out from first row gas port, and the lubricating oil and a small amount of refrigerant that refrigerant is taken out of are pooled to oil storage
It is back in chamber and by crossing logical circulation road in back pressure cavity, lubrication is provided for scroll compressor structure.When Pressure in Back-pressure Cavity crosses senior general
Orbiter pushes away stent, and then when causing the fixed scroll to be separated with stent, the both ends of hollow connectors still being capable of holding position
In the second drainage channel and the 3rd drainage channel, to ensure that logical circulation road was completely continuous, lubricating oil and refrigerant is set to flow
To back pressure cavity, the clearance leakage of lubricating oil and refrigerant between fixed scroll and the end face of stent is avoided to suction side, and then
Influence compressor performance.
In the description of the present application, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, vertical,
Vertically, orientation or position relationship indicated by level " and " top, bottom " etc. are normally based on orientation or position shown in the drawings and close
System, is for only for ease of description the application and simplifies description, in the case where not making conversely explanation, these nouns of locality do not indicate that
There must be specific orientation with the device or element for implying meaning or with specific azimuth configuration and operation, therefore cannot manage
Solve as the limitation to the application protection domain；The noun of locality " inside and outside " refers to relative to inside and outside each component profile in itself.
For the ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that spatially relative term is intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Furthermore, it is necessary to explanation, limits parts, it is only for be easy to using the word such as " first ", " second "
Corresponding parts to be distinguished, do not have Stated otherwise such as, above-mentioned word does not have particular meaning, therefore it is not intended that to this
Apply for the limitation of protection domain.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (14)
- A kind of 1. screw compressor, it is characterised in that including：Housing, the housing include casing (1) and the nose cover (5) being connected with the casing (1), are set on the casing (1) There is the first air entry, first row gas port and the shoe cream room connected with the first row gas port are provided with the nose cover (5) (203)；Fixed scroll (4) and orbiter (3), are arranged in the casing (1), are provided with the fixed scroll (4) and institute The second exhaust port stated the second air entry (4e) of the first air entry connection and connected with the first row gas port；Stent (2), is arranged on the orbiter (3) towards the side of first air entry；Wherein, the screw compressor further includes the back pressure cavity (401) and the shoe cream room (203) for connecting the screw compressor Mistake logical circulation road, it is described cross logical circulation road include be arranged in the nose cover (5) the first drainage channel, be arranged on the quiet whirlpool The second drainage channel (301) on capstan (4) and connect second drainage channel (301) and the back pressure cavity (401) 3rd drainage channel (303)；Described cross in logical circulation road is additionally provided with connector, and the first end of the connector is arranged on second drainage channel (301) in, the second end of the connector is arranged in the 3rd drainage channel (303), and the connector is in hollow structure.
- 2. screw compressor according to claim 1, it is characterised in that the connector is connecting pin (14).
- 3. screw compressor according to claim 2, it is characterised in that the first end of the connecting pin (14) with it is described quiet Scroll plate (4) is interference fitted, and second end and the standoff gap of the connecting pin (14) coordinate, alternatively, the connecting pin (14) first end and the fixed scroll (4) clearance fit, second end and the stent (2) interference of the connecting pin (14) Coordinate.
- 4. screw compressor according to claim 1, it is characterised in that the screw compressor further includes gasket (8), institute State gasket (8) to be arranged between the orbiter (3) and the stent (2), the connector is threaded through the gasket (8) In.
- 5. screw compressor according to claim 4, it is characterised in that be additionally provided with fastener on the stent (2) (15), it is mobile relative to the stent (2) to limit the gasket (8) can to pass through the gasket (8) for the fastener (15).
- 6. screw compressor according to claim 5, it is characterised in that the fastener (15) includes major diameter section and path Section, formed with step surface between the major diameter section and the path section, the fastener (15) is by the step surface by described in Gasket (8) is connected on the stent (2).
- 7. screw compressor according to claim 1, it is characterised in that the orbiter (3) is included towards stent End face (3c) and the holding tank (3d) being arranged on the end face (3c), are provided with floating seal ring in the holding tank (3d) (11), the floating seal ring (11) is used to seal the back pressure cavity (401).
- 8. screw compressor according to claim 1, it is characterised in that second drainage channel (301) and described In three drainage channels (303) it is at least one in be provided with throttle structure.
- 9. screw compressor according to claim 8, it is characterised in that the throttle structure is throttling pin (16), described Throttling pin (16) includes head (16c) and bar portion (16a), the head (16c) and second drainage channel (301) or described The inner wall of 3rd drainage channel (303) is in contact, the diameter of the bar portion (16a) be less than second drainage channel (301) or The internal diameter of 3rd drainage channel (303), is provided with interconnecting part on the head (16c).
- 10. screw compressor according to claim 9, it is characterised in that the throttling pin (16), which further includes, is connected to institute The connecting portion (16b) of head (16c) and the bar portion (16a) is stated, the diameter of the connecting portion (16b) is less than the bar portion The diameter of (16a).
- 11. screw compressor according to claim 9, it is characterised in that the head (16c) and the described second drainage are logical Road (301) and/or the 3rd drainage channel (303) interference fit.
- 12. screw compressor according to claim 8, it is characterised in that the throttle structure is impedance screw (13).
- 13. a kind of air conditioner, including compressor, it is characterised in that the compressor is any one of claim 1 to 12 Screw compressor.
- 14. air conditioner according to claim 13, it is characterised in that the air conditioner is on-board air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721302935.0U CN207349068U (en) | 2017-10-09 | 2017-10-09 | Screw compressor and there is its air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721302935.0U CN207349068U (en) | 2017-10-09 | 2017-10-09 | Screw compressor and there is its air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207349068U true CN207349068U (en) | 2018-05-11 |
Family
ID=62358470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721302935.0U Active CN207349068U (en) | 2017-10-09 | 2017-10-09 | Screw compressor and there is its air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207349068U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654373A (en) * | 2017-10-09 | 2018-02-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor and there is its air conditioner |
| CN109185131A (en) * | 2018-10-29 | 2019-01-11 | 珠海凌达压缩机有限公司 | Screw compressor, air-conditioning and vehicle |
| CN110017281A (en) * | 2019-05-20 | 2019-07-16 | 湖南贝特新能源科技有限公司 | Compressor oil-return lubrication system |
| CN110242566A (en) * | 2019-06-18 | 2019-09-17 | 南京永升新能源技术有限公司 | A kind of anti-rotation oil-free scroll air compressor machine of closed high reliability |
-
2017
- 2017-10-09 CN CN201721302935.0U patent/CN207349068U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654373A (en) * | 2017-10-09 | 2018-02-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor and there is its air conditioner |
| CN107654373B (en) * | 2017-10-09 | 2023-07-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and air conditioner with same |
| CN109185131A (en) * | 2018-10-29 | 2019-01-11 | 珠海凌达压缩机有限公司 | Screw compressor, air-conditioning and vehicle |
| CN110017281A (en) * | 2019-05-20 | 2019-07-16 | 湖南贝特新能源科技有限公司 | Compressor oil-return lubrication system |
| CN110242566A (en) * | 2019-06-18 | 2019-09-17 | 南京永升新能源技术有限公司 | A kind of anti-rotation oil-free scroll air compressor machine of closed high reliability |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207349068U (en) | Screw compressor and there is its air conditioner | |
| CN105452665B (en) | Screw compressor | |
| CN101581304A (en) | Two-stage screw compressor and refrigerating device | |
| US8888475B2 (en) | Scroll compressor with oil supply across a sealing part | |
| CN107630814A (en) | Screw compressor, throttle structure and air conditioner | |
| CN104079108B (en) | The electric motor for compressor of turborefrigerator | |
| CN207349066U (en) | Screw compressor, throttle structure and air conditioner | |
| CN107654373A (en) | Screw compressor and there is its air conditioner | |
| CN109844318A (en) | Screw compressor | |
| CN207647779U (en) | Compressor and air-conditioning system with it | |
| CN205401109U (en) | Compressor and air conditioner with same | |
| CN208396927U (en) | Screw compressor and vehicle with it | |
| CN112502974A (en) | Air supply channel, compressor and air conditioner | |
| WO2020248623A1 (en) | Water-lubricated screw air compressor | |
| CN202280621U (en) | Rotary compressor used for liquid injecting cooling | |
| CN207195178U (en) | Screw compressor and there is its air conditioner | |
| CN107061292A (en) | A kind of check-valves and the screw compressor with the check-valves | |
| CN204827927U (en) | Oil -gas separation formula air condition compressor | |
| CN107605726A (en) | Screw compressor and there is its air conditioner | |
| CN205639968U (en) | Rotary joint with double seal structure | |
| CN212296861U (en) | Double-acting variable vane pump | |
| CN108050060A (en) | A kind of screw compressor | |
| CN104454531A (en) | Compression assembly of compressor, compressor and air conditioner | |
| CN109642572A (en) | Screw compressor | |
| CN103047147B (en) | Oil circuit structure of oil-injection scroll compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |