CN100552227C - The oil supply structure of scroll compressor - Google Patents
The oil supply structure of scroll compressor Download PDFInfo
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- CN100552227C CN100552227C CNB2006101058429A CN200610105842A CN100552227C CN 100552227 C CN100552227 C CN 100552227C CN B2006101058429 A CNB2006101058429 A CN B2006101058429A CN 200610105842 A CN200610105842 A CN 200610105842A CN 100552227 C CN100552227 C CN 100552227C
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Abstract
The invention discloses a kind of oil supply structure of scroll compressor.This oil supply structure is used to prevent that the pore of fuel feeding screw rod from being stopped up by greasy filth, this fuel feeding screw rod be arranged on be defined in the back pressure chamber between moving scrollwork and the mainframe and be defined in fixed scroll and mainframe between chamber between, and be suitable for oil is fed to this chamber from back pressure chamber.This fuel feeding screw rod comprises the duct, and it has: center hole, this center hole longitudinally connect the center on top of the screw rod body of this fuel feeding screw rod; Pore, it continues perforation below this center hole, to have the axis identical with this center hole; And greasy filth discharge part, it has nonplanar structure, and this greasy filth is discharged the bottom entry end that part is formed at this screw rod body.
Description
Technical field
The present invention relates to a kind of oil supply structure of scroll compressor, especially, the oil supply structure that relates to the scroll compressor that a kind of pore that is used to prevent the fuel feeding screw rod stopped up by greasy filth, described fuel feeding screw rod be arranged on be defined in the back pressure chamber between moving scrollwork and the mainframe and be defined in fixed scroll and mainframe between chamber between, and be suitable for oil is conducted to this chamber from back pressure chamber.
Background technique
As shown in Figure 1, general scroll compressor comprises: be installed on mainframe 2 and sub-frame 3 in the housing in the upper position place of housing 1 and lower position, press fit in the stator 4 in the housing 1 and be arranged in the stator 4 and be suitable for utilizing the power that is applied thereto and the rotor 5 that rotates between mainframe 2 and sub-frame 3.
Vertical bent axle 6 is fixing insert rotors 5 the center so that the opposite end of bent axle 6 support rotationally by mainframe 2 and sub-frame 3 respectively.Like this, vertical bent axle 6 rotates with rotor 5.
Scroll compressor also comprises compression set, and this compression set comprises the moving scrollwork 7 on the upper end face that is arranged at mainframe 2 and is positioned at moving scrollwork 7 tops, is fixed in the fixed scroll 8 on week of housing 1.Moving scrollwork 7 has the bottom that is connected in bent axle 6 and is formed with the top of involute moving scroll 7a.Fixed scroll 8 has fixedly scroll 8a, this fixedly scroll 8a be configured to be meshed so that compression chamber 21 is defined in fixedly between the scroll 8a and moving scroll 7a with moving scroll 7a.For this structure, when moving scrollwork 7 carries out the moving rotation by the rotation of bent axle 6, can the refrigerant gas of introducing in the compression chamber 21 be compressed.
Be used for the structure that bent axle 6 and moving scrollwork 7 couple together is comprised cannular boss 7b and crank pin 10, described cannular boss 7b extends downwards from the center of the bottom of moving scrollwork 7, and described crank pin 10 extends upward intended distance to insert the cannular boss 7b from the center of the upper end face of bent axle 6.Bearing 11 is forced to be press-fit among the boss 7b, and is connected with eccentric bush 12 rotationally around crank pin 10.
In addition, Ou Dan (Oldham) ring 9 as anti-rotation device inserts between mainframe 2 and the moving scrollwork 7.Fuel feeding path 6a is defined in the bent axle 6 on the whole length of bent axle 6 vertically.Paired up and down weighted 13 and 14 is arranged at the top and the below of rotor 5 respectively, rotates with the imbalance of the bent axle 6 that prevents to be caused by crank pin 10.
Pass the outlet 17 of fixed scroll 8 and be discharged from if be compressed in higher pressure refrigerant gas in the above-mentioned compression set, higher pressure refrigerant gas will apply direct impact to the top cover 1a of the upper end that constitutes housing 1 so, thereby causes producing noise.Therefore, in order to reduce noise, silencing apparatus 22 is installed on the top of fixed scroll 8.As shown in Figure 2, silencing apparatus adopts the form of cover.
Except this decrease of noise functions, when scroll compressor has high voltage structures (higher pressure refrigerant gas that the lower area of compressor is discharged from compression set abrim in this high voltage structures), silencing apparatus 22 also has the function that suction pressure and exhaust pressure are kept apart, and is about to the function that low voltage section and high-voltage section are kept apart.Fixed scroll 8 has guide path 23 so that the compression refrigerant gas in the silencing apparatus 22 is imported in the lower area of compressor.
In Fig. 1, reference character 15 and 16 is represented sucking pipe and outlet pipe respectively, and reference character 18 expression exhaust cavitys.In addition, reference character 19 and 20 is represented oil and oily propulsion device respectively.
In having the scroll compressor of above-mentioned structure, if rotor 5 rotates in stator 4 when receiving power, bent axle 6 just rotates by rotor 5 so, thereby makes that utilize crank pin 10 to be connected in moving scrollwork 7 on the bent axle 6 carries out moving along the moving radius between the center of the center of bent axle 6 and moving scrollwork 7 and move.
Therefore, be defined in moving scroll 7a and fixedly the continuous moving motion of the compression chamber between the scroll 8a 21 by moving scrollwork 7 make volume reducing, thereby cause the refrigerant gas that sucks is wherein compressed.The outlet 17 of higher pressure refrigerant gas by fixed scroll 8 of compression entered in the exhaust cavity 18.Again the guide path 23 of the refrigerant gas in the exhaust cavity 18 by fixed scroll 8 imported in the lower area of compressor, thereafter, be disposed to the outside by outlet pipe 16.
Fig. 2 is the local amplification view of Fig. 1.
As shown in Figure 2, mainframe 2 has fuel feeding screw rod 24.During compressor operating, the oil that fuel feeding screw rod 24 allows to infeed among the back pressure chamber C1 by bent axle 6 enters cavity C 2, described back pressure chamber C1 is defined between moving scrollwork 7 and the mainframe 2 and keeps high pressure, and described cavity C 2 is defined between fixed scroll 8 and the mainframe 2 and keeps low pressure.
As shown in Figure 3, fuel feeding screw rod 24 has cascade screw rod body 25, and described screw rod body 25 has the top and the bottom of different-diameter.Screw rod body 25 tops, larger-diameter part externally is formed with screw thread 26, be formed among the tapped hole 2a of mainframe 2 to allow fuel feeding screw rod 24 to screw in.
Duct 27 connects the center of screw rod body 25.For the exhaust pressure that allows an amount of oil to pass duct 27 supply and do not hinder oil, duct 27 comprises center hole 28 and pore 29, and described center hole 28 connects the top of screw rod bodies 25, and described pore 29 connects in the bottom of screw rod bodies 25 to be connected with center hole 28.The diameter of pore 29 is less than the diameter of center hole 28 and be drilled to the center that is positioned center hole 28.
Yet, in the fuel feeding screw rod of traditional scroll compressor, have planar configuration because pore is configured to have hole and its entry end of very small diameter,, and be introduced in the pore of fuel feeding screw rod so the various impurity and the greasy filth that are contained in the oil may be deposited in entry end.
Therefore, exist the pore of fuel feeding screw rod may be contained in the problem that various impurity in the oil and greasy filth block.Will hinder oil to infeed in the compression set like this, and then cause the performance of compressor and reliability to reduce appropriate amount.
The pore that another problem of traditional oil supply structure of scroll compressor is to constitute the duct of fuel feeding screw rod not only has too small diameter as mentioned above, and has long length, therefore is difficult to processing.Thereby the processing price of traditional oil supply structure increases, thereby and uneconomical.
Another problem of tradition scroll compressor is oil is infeeded the chamber with low-pressure continuously from the back pressure chamber with high pressure, thereby causes the oil supplying amount unnecessarily to increase.And, and oil directly can be conducted to the thrust face (thrust plane) of moving scrollwork and mainframe, but feed to the chamber between fixed scroll and the mainframe, thus cause fuel feeding efficient low.
Another problem is that the pore of fuel feeding screw rod must have high slenderness ratio, to satisfy the requirement to the scroll compressor moderate oil supply.This shortcoming causes hole processing difficulties and output extremely low (that is, compare with the fuel delivery of reality, the percentaeg of the fuel delivery of expected in theory is very low).Difficulty in the processing of hole becomes the high processing cost of compressor and the factor that manufacture cost increases, thereby causes the reduction of business efficiency.
Summary of the invention
Therefore, in view of above problem the present invention is proposed.One object of the present invention is that the pore that prevents the fuel feeding screw rod is blocked by greasy filth, wherein, the fuel feeding screw rod be arranged on be defined in the back pressure chamber between moving scrollwork and the mainframe and be defined in fixed scroll and mainframe between chamber between, and be suitable for oil is infeeded this chamber from this back pressure chamber.
Another object of the present invention is when being easy to realize duct processing, and the duct that prevents the fuel feeding screw rod is contained in the various impurity and greasy filth obstruction in the oil.
Another purpose of the present invention is realizing with oil oil directly can being infeeded the thrust face of this moving scrollwork and this mainframe when the back pressure chamber with high pressure infeeds low-pressure chamber off and on.
Another purpose of the present invention is under the situation that need not adopt the high slenderness ratio relevant with the processing of the pore of fuel feeding screw rod, and the pore that can prevent the fuel feeding screw rod is contained in various impurity in the oil and greasy filth or the like and blocks.
According to first scheme of the present invention, above-mentioned and other purpose can realize by the oil supply structure that a kind of scroll compressor is provided, described oil supply structure is used for adopting the fuel feeding screw rod that oil is infeeded the chamber that is defined between fixed scroll and this mainframe from the back pressure chamber that is defined between moving scrollwork and the mainframe, this fuel feeding screw rod screws in and runs through between this back pressure chamber and this chamber, in the tapped hole of this mainframe, wherein, this fuel feeding screw rod comprises: the duct, it has: center hole, this center hole longitudinally connect the center on top of the screw rod body of fuel feeding screw rod; Pore, it continues perforation below this center hole, to have the axis identical with this center hole; And greasy filth discharge part, it has nonplanar structure, and this greasy filth is discharged the bottom entry end that part is formed at this screw rod body.
Preferably, greasy filth is discharged part and can be formed by the taper inclined surface of the periphery of the bottom entry end that is positioned at this screw rod body.
Preferably, this screw rod body can have stepped upper and lower, and this top and this bottom have mutually different diameter.
Preferably, this greasy filth is discharged part and can be formed by the elongate rod of the bottom entry end that is positioned at this screw rod body, is provided with a plurality of strengthening rib equably along the periphery of this elongate rod.
Preferably, each described strengthening rib has the slant edge of the bottom entry end that originates in this screw rod body.
According to alternative plan of the present invention, above-mentioned and other purpose can realize by the oil supply structure that a kind of scroll compressor is provided, described oil supply structure is used for by adopting the fuel feeding screw rod that oil is infeeded the chamber that is defined between fixed scroll and the mainframe from the back pressure chamber that is defined between moving scrollwork and the mainframe, this fuel feeding screw rod screws in and runs through in the tapped hole between this back pressure chamber and this chamber, this mainframe, this fuel feeding screw rod comprises: center hole, and it longitudinally connects the center on top of the screw rod body of this whelk bar; Eccentric opening, the bottom that it departs from the center of this center hole and longitudinally connects the screw rod body; And oil supply hole, its lap by this center hole and this eccentric opening forms.
Preferably, center hole and eccentric opening can have mutually different diameter.
Preferably, this center hole and this eccentric opening can have mutually the same diameter.
According to third party's case of the present invention, above-mentioned and other purpose can realize by the oil supply structure that a kind of scroll compressor is provided, this oil supply structure comprises the fuel feeding screw rod, and this fuel feeding screw rod comprises: center hole, and it longitudinally connects the center of the bottom of the screw rod body that constitutes this fuel feeding screw rod; Eccentric opening, the center in its Off center hole also longitudinally connect the top of screw rod body; And oil supply hole, its lap by this center hole and this eccentric opening forms.
Preferably, this center hole and this eccentric opening can have mutually different diameter.
Preferably, this center hole and this eccentric opening can have mutually the same diameter.
According to cubic case of the present invention, above-mentioned and other purpose can realize by the oil supply structure that a kind of scroll compressor is provided, described oil supply structure comprises: the fuel feeding screw rod, it has screw rod body and duct, this screw rod body comprises having stepped upper and lower, this top and this bottom have mutually different diameter, this duct comprises the center hole and the pore at the center of this top of longitudinally connecting this screw rod body respectively and this bottom, and intermittent type fuel feeding member, it is used for infeeding in the Oudan ring keyway of this moving scrollwork by the oil that this fuel feeding screw rod will be defined in the back pressure chamber between moving scrollwork and the mainframe, and the moving motion of this intermittent type fuel feeding member by this moving scrollwork is opened and closes.
Preferably, this intermittent type fuel feeding member can comprise: the oil supply hole road, and it is defined in the top of this mainframe vertically, and this oil supply hole road is configured to allow this fuel feeding screw rod to screw in this oil supply hole road; And the intercommunicating pore road, it laterally, flatly is defined in this mainframe along this back pressure chamber, and this intercommunicating pore road is suitable for being communicated with this oil supply hole road and this back pressure chamber.
Preferably, the lower end on this oil supply hole road can be formed with the cascade sticking department that central authorities protrude, and this cascade sticking department limits and enters the hole.
Preferably, this intercommunicating pore road can be along the lateral direction penetrating of this back pressure chamber in this mainframe, and screws in the end on this intercommunicating pore road stopper is arranged.
Preferably, this intermittent type fuel feeding member can comprise the oil supply hole road of inclination, and it runs through between the thrust face and this back pressure chamber of this mainframe and this moving scrollwork obliquely, and is configured to allow this fuel feeding screw rod to screw in the oil supply hole road of this inclination.
Preferably, the upper end on this oil supply hole road is formed with oily passage, and the slightly larger in diameter of described oily passage is in the diameter on this oil supply hole road.
Preferably, the lower end on this oil supply hole road can also be formed with the cascade sticking department that central authorities protrude, and this cascade sticking department qualification enters the hole.
Description of drawings
By the detailed description of carrying out, will more be expressly understood above and other purpose, feature and other advantage of the present invention below in conjunction with accompanying drawing:
Fig. 1 is a longitudinal sectional view, and it shows the internal structure of general scroll compressor;
Fig. 2 is the local amplification view of Fig. 1;
Fig. 3 is a sectional block diagram, and it shows the structure of the fuel feeding screw rod of Fig. 2;
Fig. 4 is local amplification view, and it shows the oil supply structure according to first embodiment of the invention;
Fig. 5 is local amplification view, and it shows the oil supply structure according to second embodiment of the invention;
Fig. 6 a and Fig. 6 b are respectively face upwarding stereogram and local amplification view, and it shows the fuel feeding screw rod according to third embodiment of the invention;
Fig. 7 is a sectional block diagram, and it shows the structure according to the fuel feeding screw rod of fourth embodiment of the invention;
Fig. 8 is a sectional view, and it shows the diagrammatic sketch by the fuel feeding screw rod fuel feeding of Fig. 7;
The sectional view that Fig. 9 cuts open for the arrow line A-A along Fig. 8;
Figure 10 is a sectional block diagram, and it shows the structure according to the fuel feeding screw rod of fifth embodiment of the invention;
Figure 11 is local amplification view, and it shows the oil supply structure according to sixth embodiment of the invention;
Figure 12 is the amplification view of the circle " A " of Figure 11;
Figure 13 a and Figure 13 b are local amplification view, and it shows the closed condition and the open mode of the oil supply structure of Figure 11 respectively;
Figure 14 is local amplification view, and it shows the oil supply structure according to seventh embodiment of the invention;
Figure 15 is local amplification view, and it shows the oil supply structure according to eighth embodiment of the invention; And
Figure 16 a and Figure 16 b are local amplification view, and it shows the closed condition and the open mode of the oil supply structure of Figure 15 respectively.
Embodiment
With reference to accompanying drawing structure of the present invention is illustrated in greater detail.
In the following description, of the present inventionly represent by identical reference character with corresponding each component parts of prior art.
Be similar to prior art, among the tapped hole 2a of fuel feeding screw configuration according to scroll compressor of the present invention for screw-in mainframe 2 of perforation between back pressure chamber C1 and cavity C 2 (referring to Fig. 2).Here, back pressure chamber C1 is defined between moving scrollwork 7 and the mainframe 2 and keeps high pressure, and cavity C 2 is defined between fixed scroll 8 and the mainframe 2 and keep low-pressure.
As shown in Figure 3, fuel feeding screw rod 24 has screw rod body 25, and the outside of this screw rod body 25 is formed with screw thread 26, be formed among the tapped hole 2a of mainframe 2 to allow fuel feeding screw rod 24 to screw in, and duct 27 connects the center of screw rod body 25.Oil among the back pressure chamber C1 can infeed in the cavity C 2 that is defined between fixed scroll 8 and the mainframe 2 by passing hole channel 27.
Above-mentioned oil supply structure according to scroll compressor of the present invention is characterised in that the bottom entry end of fuel feeding screw rod 24 has nonplanar structure, thereby prevents to be contained in the entry end place, bottom that various impurity in the oil and greasy filth or the like accumulate on fuel feeding screw rod 24 to provide greasy filth to discharge part 30.
Referring to the Fig. 4 that shows the first embodiment of the present invention with sectional view, greasy filth is discharged part 30 can be included in the taper inclined surface 31 that the periphery place of the bottom entry end of fuel feeding screw rod 24 forms.Inclined surface 31 is steep more, and inclined surface 31 just can be easy to realize discharging greasy filth more.
Referring to the Fig. 5 that shows the second embodiment of the present invention with sectional view, except the taper inclined surface 31 that the periphery place at the bottom of fuel feeding screw rod 24 entry end forms, the screw rod body 25 of fuel feeding screw rod 24 can have stepped top and bottom, the diameter of described top and bottom is different, keeps chamber 35 to limit greasy filth between the tapped hole 2a of screw rod body and mainframe 2.
Above-mentioned structure for present embodiment, when greasy filth slides and when fuel feeding screw rod 24 is discharged along the inclined surface 31 of screw rod body 25, greasy filth just is directed to greasy filth and keeps chamber 35, described greasy filth keeps the outer surface of chamber 35 around the screw rod body 25 at the inclination angle with the angle that is different from inclined surface 31, thereby, just do not exist greasy filth to keep risk on the inclined surface 31 that chamber 35 directly is back to screw rod body 25 from greasy filth.
Fig. 6 a and Fig. 6 b show the third embodiment of the present invention, and more specifically, Fig. 6 a is a face upwarding stereogram, and Fig. 6 b is a sectional view.
As shown in FIG., the greasy filth of present embodiment is discharged part 30 and can be comprised: form the elongate rod 32 of the bottom of screw rod body 25, and around the elongate rod 32 even a plurality of strengthening rib 33 that are provided with, to strengthen the structural strength of elongate rod 32.At this, described a plurality of strengthening rib 33 can have approximate criss-cross structure and shape is arranged so that each strengthening rib 33 has the slant edge 34 of the entry end that originates in screw rod body 25.
Fig. 7 is a sectional block diagram, and it shows the structure according to the fuel feeding screw rod of fourth embodiment of the invention.
As shown in FIG., the fuel feeding screw rod 24 of present embodiment is characterised in that its duct 40 comprises center hole 41, eccentric opening 42 and oil supply hole 43, described center hole 41 longitudinally connects the center on the top of fuel feeding screw rod 24, described eccentric opening 42 departs from the center of fuel feeding screw rod 24, longitudinally connects the bottom of fuel feeding screw rod 24, and described oil supply hole 43 is limited by the lap of center hole 41 with eccentric opening 42.
Referring to Fig. 9, oil supply hole 43 is illustrated in greater detail, when center hole 41 and eccentric opening 42 have mutually the same diameter, distance between the central axis of the central axis of center hole 41 and eccentric opening 42 is long more, be that eccentric opening 42 is long more with respect to the eccentric distance S at the center of center hole 41, overlap region between center hole 41 and the eccentric opening 42 will be more little, thereby cause reducing by the fuel delivery of oil supply hole 43.
On the contrary, eccentric opening 42 is short more with respect to the eccentric distance S at the center of center hole 41, and the overlap region between center hole 41 and the eccentric opening 42 will be big more, thereby causes increasing by the fuel delivery of oil supply hole 43.
In addition, eccentric opening 42 is factors of determining by the fuel delivery of oil supply hole 43 with respect to the degree of depth of center hole 41 or center hole 41 with respect to the degree of depth of eccentric opening 42.In other words, the fuel delivery and the degree of depth are proportional.Correspondingly, the height of the oil supply hole 43 between overlapping center hole 41 and eccentric opening 42 is high more, and the fuel delivery by oil supply hole 43 will be big more.On the contrary, the height of oil supply hole 43 is low more, and the fuel delivery by oil supply hole 43 will be more little.
In this case, suppose that oil supply hole 43 has identical size, the fuel delivery by oil supply hole 43 will change according to the height of oil supply hole 43.Therefore, can based on according to the various conditions of the size of oil supply hole 43 and height to regulating by the fuel delivery of oil supply hole 43.
Fig. 8 is a sectional view, and it shows the diagrammatic sketch by fuel feeding screw rod fuel feeding according to the present invention.
As shown in FIG., if compressor starts work, the back pressure chamber C1 between moving scrollwork 7 and mainframe 2 just forms hyperbaric chamber, and the cavity C 2 between fixed scroll 8 and mainframe 2 just forms low-pressure cavity.
In addition, being stored in the fuel feeding path 6a of oil by bent axle 6 in the lower area of compressor infeeds among the back pressure chamber C1 between moving scrollwork 7 and mainframe 2.Subsequently, oil infeeds among the C2 of low-pressure chamber between fixed scroll 8 and mainframe 2 by fuel feeding screw rod 24 again.
In this case, realize fuel feeding by the duct 40 in the screw rod body 25 that is defined in fuel feeding screw rod 24.At first, the oil among the back pressure chamber C1 is introduced in the eccentric opening 42, by passing the oil supply hole 43 that limits by overlapping eccentric opening 42 and center hole 41 described oil is infeeded in the center hole 41 subsequently.Thus, in the oily cavity C 2 that is infeeded at last between fixed scroll 8 and mainframe 2.
As mentioned above, the oil supplying amount is determined based on following factor, the i.e. size of the oil supply hole 43 between center hole 41 and eccentric opening 42, and according to eccentric opening 42 with respect to the degree of depth of center hole 41 or center hole 41 height with respect to the oil supply hole 43 of the degree of depth of eccentric opening 42.As shown in Figure 9, the size of oil supply hole 43 and eccentric opening 42 are inversely proportional to respect to the eccentric distance S at the center of center hole 41.
Figure 10 is a sectional block diagram, and it shows the structure according to the fuel feeding screw rod of fifth embodiment of the invention.
As shown in FIG., as the alternative scheme that in the top of screw rod body 25, forms the center hole 41 in duct 40 described in previous embodiment of the present invention, the fuel feeding screw rod 24 of present embodiment is characterised in that its duct 40 comprises center hole 41, eccentric opening 42 and oil supply hole 43, described center hole 41 longitudinally connects the center of the bottom of screw rod body 25, described eccentric opening 42 Off center holes 41, longitudinally connect the top of screw rod body 25, described oil supply hole 43 is limited by the lap of center hole 41 with eccentric opening 42.
By the present invention as can be known, can be based on (for example to the various requirement in the duct 40 of screw rod body 25, when oil is conducted to the upside of moving scrollwork, require the oily discharge section must be near the downside of moving scrollwork 7) or center hole 41 retrofited in the duct of fuel feeding screw rod in every way with other processing conditions of eccentric opening 42.
Figure 11 is local amplification view, and it shows the oil supply structure according to sixth embodiment of the invention.
As shown in FIG., present embodiment is characterised in that the oil that adopts among the back pressure chamber C1 that intermittent type fuel feeding member 50 will be defined between moving scrollwork 7 and the mainframe 2 infeeds by fuel feeding screw rod 24 among the Oudan ring keyway 7c of moving scrollwork 7, and this intermittent type fuel feeding member 50 moves by the moving of moving scrollwork and is opened and closes.
As shown in figure 12, intermittent type fuel feeding member 50 comprises oil supply hole road 51 and intercommunicating pore road 52, described oil supply hole road 51 is defined in the top of mainframe 2 vertically allowing fuel feeding screw rod 24 to screw in wherein, and described intercommunicating pore road 52 is defined in the mainframe 2 along the transverse horizontal ground of back pressure chamber C1 and is connected with back pressure chamber C1 with permission oil supply hole road 51.
In order to prevent that fuel feeding screw rod 24 and oil supply hole road 51 from separating, so the lower end on oil supply hole road 51 is formed with the cascade sticking department 56 that central authorities protrude.The cascade sticking department 56 that central authorities protrude is configured to enter hole 55 in central authorities' qualification, thereby the oil that allows to pass intercommunicating pore road 52 is introduced in the oil supply hole road 51.
For the above-mentioned structure of present embodiment, shown in Figure 13 a and Figure 13 b, the oil supply hole road 51 that connects vertically in the top of mainframe 2 is opened and is closed by the moving motion of moving scrollwork 7.Figure 13 a is the sectional view that shows the closed condition on oil supply hole road 51, and Figure 13 b is the sectional view that shows the open mode on oil supply hole road 51.
Shown in Figure 13 a, when the fuel feeding path of oil by bent axle infeeds back pressure chamber C1 between moving scrollwork 7 and mainframe 2, oil at first passes intercommunicating pore road 52 and is introduced into and enters in the hole 55, and the duct 27 by fuel feeding screw rod 24 infeeds in the oil supply hole road 51 subsequently.In this case, if oil supply hole road 51 is closed by moving scrollwork 7, then can not supply oil.
Thereafter, shown in Figure 13 b, if the moving motion of the Oudan ring keyway 7c of moving scrollwork 7 by moving scrollwork 7 be positioned oil supply hole road 51 directly over, then oil supply hole road 51 is opened, thereby oil can be infeeded among the Oudan ring keyway 7c of moving scrollwork 7.By corresponding opening, thereby realize step fuel feeding operation.
Figure 14 is local amplification view, and it shows the oil supply structure according to seventh embodiment of the invention.
As shown in FIG., be similar to the sixth embodiment of the present invention, present embodiment uses intermittent type fuel feeding member 50, be used to allow be opened and close, the oil among the back pressure chamber C1 that is defined between moving scrollwork 7 and the mainframe 2 is infeeded among the Oudan ring keyway 7c of moving scrollwork 7 by fuel feeding screw rod 24 along with the moving motion of fuel feeding member 50 by moving scrollwork 7.
Intermittent type fuel feeding member 50 comprises oil supply hole road 51 and intercommunicating pore road 52, described oil supply hole road 51 is defined in the top of mainframe 2 vertically allowing fuel feeding screw rod 24 to screw in wherein, and described intercommunicating pore road 52 is defined in the mainframe 2 along the transverse horizontal ground of back pressure chamber C1 and is connected with back pressure chamber C1 with permission oil supply hole road 51.
Present embodiment is characterised in that along screwing in the end on the intercommunicating pore road 52 of lateral direction penetrating in mainframe 2 of back pressure chamber C1 stopper 53.Because stopper 53 is to screw in separably in the intercommunicating pore road 52, be easier to advantage that intercommunicating pore road 52 is cleaned so have.
In Figure 14, reference character 55 and 56 represents to enter the cascade sticking department of hole and central authorities' protrusion respectively.
Figure 15 is local amplification view, and it shows the oil supply structure according to eighth embodiment of the invention.
As shown in FIG., be similar to above the 6th and the 7th embodiment of the present invention, present embodiment uses intermittent type fuel feeding member 50, be used to allow be opened and close, the oil among the back pressure chamber C1 that is defined between moving scrollwork 7 and the mainframe 2 is infeeded among the Oudan ring keyway 7c of moving scrollwork 7 by fuel feeding screw rod 24 along with the moving motion of fuel feeding member 50 by moving scrollwork 7.
Intermittent type fuel feeding member 50 comprises the oil supply hole road 51 of inclination, and described oil supply hole road 51 connects between the thrust face of mainframe 2 and moving scrollwork 7 and back pressure chamber C1 obliquely to allow fuel feeding screw rod 24 to screw in wherein.
Be similar to above the 6th and the 7th embodiment of the present invention, the upper end on oil supply hole road 51 is formed with oily passage 54, and the slightly larger in diameter of wherein oily passage 54 is in the diameter on oil supply hole road 51; The cascade sticking department 56 that the lower end on oil supply hole road 51 is formed with central authorities' protrusion separates to prevent fuel feeding screw rod 24 and oil supply hole road 51, and the cascade sticking department 56 that these central authorities protrude limits this and enters hole 55.
For the above-mentioned structure of present embodiment, shown in Figure 16 a and Figure 16 b, run through the moving motion of oil supply hole road 51 by moving scrollwork 7 in the mainframe 2 obliquely and be opened and close.Figure 16 a is the sectional view that shows the closed condition on oil supply hole road 51, and Figure 16 b is the sectional view that shows the open mode on oil supply hole road 51.
Shown in Figure 16 a, when the fuel feeding path of oil by bent axle infeeded back pressure chamber C1 between moving scrollwork 7 and mainframe 2, oil infeeded in the oil supply hole road 51 by the duct 27 of fuel feeding screw rod 24.In this case, if oil supply hole road 51 is closed by moving scrollwork 7, then can not supply oil.
Thereafter, shown in Figure 16 b, if the moving motion of the Oudan ring keyway 7c of moving scrollwork 7 by moving scrollwork 7 be positioned oil supply hole road 51 directly over, then oil supply hole road 51 is opened, thereby oil can be infeeded among the Oudan ring keyway 7c of moving scrollwork 7.By corresponding opening, thereby realize step fuel feeding operation.
From the above description as can be known, the oil supply structure according to scroll compressor of the present invention has following effect:
First, the present invention has used the greasy filth with non-planar surface structure to discharge part, this greasy filth is discharged the entry end place that part is arranged at the fuel feeding screw rod, described fuel feeding screw rod be in be defined in the back pressure chamber between moving scrollwork and the mainframe and be defined in fixed scroll and mainframe between chamber between.The effect that greasy filth discharge part is set is that the pore that prevents the fuel feeding screw rod is blocked by greasy filth, and then allows an amount of oil is infeeded in the compression set.The performance and the reliability of compressor have been improved like this.
Second, according to the present invention, for oil is infeeded the chamber that is defined between fixed scroll and the mainframe from the back pressure chamber that is defined between moving scrollwork and the mainframe, between back pressure chamber and this chamber the fuel feeding screw rod is installed, this fuel feeding screw rod has the duct by center hole, eccentric opening and intercommunicating pore road be combined into.By this structure, can advantageously realize simplifying duct processing, and then cut down finished cost.
The 3rd, can prevent effectively that by the duct of center hole, eccentric opening and intercommunicating pore road be combined into various impurity and greasy filth that the duct is contained in the oil from blocking.Therefore, can realize, thereby improve the performance and the reliability of compressor by fuel feeding screw rod fuel feeding correctly.
The 4th, according to the present invention, oil can be infeeded the low-pressure chamber and supply part or device that need not separated type from the back pressure chamber with high pressure off and on.In addition, oil directly can be conducted to the thrust face of moving scrollwork and mainframe.Can produce following effect like this: promptly can realize high business efficiency and high fuel feeding efficient in the compressor manufacturing, prevent that simultaneously excessive oil from infeeding in the compression set.
The 5th, according to aforesaid, oil is infeeded advantage in the compressor set off and on, effect of the present invention do not need to be the fuel feeding screw rod pore high slenderness ratio and increased the diameter of pore.Therefore, compare with the pore of the conventional fuel feeding screw rod of the high slenderness ratio of needs, the present invention can produce following effect: the processing cost that promptly can reduce pore has increased output simultaneously, and prevent that pore is contained in various impurity in the oil and greasy filth or the like and blocks, thereby improved the performance and the reliability of compressor.
Although disclose the preferred embodiments of the present invention for the example illustrative purposes, but those of ordinary skill in the art will be clear, under the situation that does not break away from disclosed scope of the present invention and spirit in the appended claims, can make various remodeling, increase and substitute.
Claims (4)
1. the oil supply structure of a scroll compressor, it is used for by adopting the fuel feeding screw rod that oil is infeeded the chamber that is defined between fixed scroll and this mainframe from the back pressure chamber that is defined between moving scrollwork and the mainframe, this fuel feeding screw rod screws in and runs through in the tapped hole between this back pressure chamber and this chamber, this mainframe, wherein
This fuel feeding screw rod comprises:
The duct, it has: center hole, this center hole longitudinally connect the center on top of the screw rod body of this fuel feeding screw rod; Pore, it continues perforation below this center hole, to have the axis identical with this center hole; And
Greasy filth is discharged part, and its taper inclined surface by the periphery of the bottom entry end that is positioned at this screw rod body forms.
2. oil supply structure according to claim 1, wherein, this screw rod body has stepped upper and lower, and this top and this bottom have mutually different diameter.
3. the oil supply structure of a scroll compressor, it is used for by adopting the fuel feeding screw rod that oil is infeeded the chamber that is defined between fixed scroll and this mainframe from the back pressure chamber that is defined between moving scrollwork and the mainframe, this fuel feeding screw rod screws in and runs through in the tapped hole between this back pressure chamber and this chamber, this mainframe, wherein
This fuel feeding screw rod comprises:
The duct, it has: center hole, this center hole longitudinally connect the center on top of the screw rod body of this fuel feeding screw rod; Pore, it continues perforation below this center hole, to have the axis identical with this center hole; And
Greasy filth is discharged part, and its elongate rod by the bottom entry end that is positioned at this screw rod body forms, and is provided with a plurality of strengthening rib equably along the periphery of this elongate rod.
4. oil supply structure according to claim 3, wherein, each described strengthening rib has the slant edge of the bottom entry end that originates in this screw rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101058429A CN100552227C (en) | 2006-07-13 | 2006-07-13 | The oil supply structure of scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101058429A CN100552227C (en) | 2006-07-13 | 2006-07-13 | The oil supply structure of scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101105176A CN101105176A (en) | 2008-01-16 |
| CN100552227C true CN100552227C (en) | 2009-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101058429A Expired - Fee Related CN100552227C (en) | 2006-07-13 | 2006-07-13 | The oil supply structure of scroll compressor |
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| CN (1) | CN100552227C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6465626B2 (en) * | 2014-03-05 | 2019-02-06 | カルソニックカンセイ株式会社 | Gas compressor |
| KR102141871B1 (en) * | 2015-05-26 | 2020-08-07 | 한온시스템 주식회사 | Compressor with an oil return means |
| CN112253465B (en) * | 2020-11-13 | 2023-05-26 | 华域三电汽车空调有限公司 | Compressor oil return structure and compressor |
-
2006
- 2006-07-13 CN CNB2006101058429A patent/CN100552227C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
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| CN101105176A (en) | 2008-01-16 |
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