CN207033738U - A kind of compressor - Google Patents

Abstract

The utility model provides a kind of compressor, including：Housing, the bottom of the housing are provided with an oil sump；Compression mechanism, including fixed scroll and movable orbiting scroll, at least described movable orbiting scroll are arranged in the housing, and the fixed scroll and the movable orbiting scroll are relative and form compression chamber；Motor mechanism, it is arranged in the housing, including rotor and motor stator；Upper oil blocking cover and lower oil blocking cover, are arranged in the housing, the upper oil blocking cover, lower oil blocking cover and install its part and are collectively forming closed space, and the rotor is contained in the space.Compressor provided by the utility model realizes the isolation of lubricating oil and refrigerant, improves compressor reliability.

Description

A kind of compressor

Technical field

It the utility model is related to compressor field, more particularly to a kind of vehicular compressed machine.

Background technology

Existing vortex compressor of automobile has the characteristics that and deficiency：

Horizontal type structure is substantially, i.e. shafting transmission mechanism is to be transversely mounted with the pump housing.It is horizontal relative to vertical compressor The shortcomings that compressor is to be not easy to form stable lubricating oil bath inside compressor, and the difficulty for recycling and lubricating in oil is big, pressure The oil drain quantity of contracting machine is big, and enters if any solid impurity in compressor, and impurity is easy to make as refrigerant is flowed into the pump housing Into the damage of Pump Body Parts.

Utility model content

The defects of the utility model is in order to overcome above-mentioned prior art to exist, compressor provided by the utility model realize profit The isolation of lubricating oil and refrigerant, improve compressor reliability.

The utility model provides a kind of compressor, including：Housing, the bottom of the housing are provided with an oil sump；Compression mechanism, Including fixed scroll and movable orbiting scroll, at least described movable orbiting scroll is arranged in the housing, and the fixed scroll and the movable orbiting scroll are relative And form compression chamber；Motor mechanism, it is arranged in the housing, including rotor and motor stator；Upper oil blocking cover and lower block Oil cover, is arranged in the housing, the upper oil blocking cover, lower oil blocking cover and installs its part and is collectively forming closed space, The rotor is contained in the space.

Compared with prior art, the motor that the utility model avoids rotating at a high speed by the setting of upper oil blocking cover and lower oil blocking cover Rotor or bent axle agitation lubricating oil simultaneously get rid of lubricating oil in the free air space for flying to refrigerant, realize point of lubricating oil and refrigerant From, lubricating oil is significantly reduced as refrigerant circulates and is discharged the probability of compressor, raising compressor reliability.

Brief description of the drawings

Its example embodiment, above and other feature and advantage of the present utility model is described in detail by referring to accompanying drawing It will be apparent.

Fig. 1 shows the stereogram of the compressor according to the utility model embodiment.

Fig. 2 shows the profile of the compressor according to the utility model embodiment.

Fig. 3 is the partial view F in Fig. 2.

Fig. 4 is the partial view G in Fig. 2.

Fig. 5 shows the front view of the compressor according to the utility model embodiment.

Fig. 6 is Fig. 5 A-A profiles.

Fig. 7 is Fig. 5 B-B profiles.

Fig. 8 shows upper bracket-motor mechanism-lower carriage assembling stereogram according to the utility model embodiment.

Fig. 9 shows upper bracket-motor mechanism according to the utility model embodiment-lower carriage assembling upward view.

Figure 10 is Fig. 9 D-D profiles.

Figure 11 shows the upward view of the compressor according to the utility model embodiment.

Figure 12 is Figure 11 E-E profiles.

Figure 13 shows the stereogram at the visual angle of upper bracket one according to the utility model embodiment.

Figure 14 shows the profile of the compressor according to the utility model embodiment.

Figure 15 shows the front view of the eccentric crankshaft according to the utility model embodiment.

Figure 16 is Figure 15 Q-Q profiles.

Figure 17 is Figure 14 partial view M.

Figure 18 is Figure 14 partial view L.

Figure 19 is the stereogram according to the lower carriage of the utility model embodiment.

Figure 20 shows the upward view of the enclosure interior part according to the utility model embodiment.

Figure 21 shows the upward view of the enclosure interior part for not installing oil pump end plate according to the utility model embodiment.

The stereogram at two visual angles of the oil pump according to the utility model embodiment is shown respectively in Figure 22 and Figure 23.

Figure 24 shows the stereogram at another visual angle of the upper bracket according to the utility model embodiment.

Figure 25 shows the upper bracket according to the utility model embodiment-anti-rotation mechanism assembling schematic diagram.

Figure 26 shows the stereogram of the movable orbiting scroll according to the utility model embodiment.

Figure 27 shows the upward view of the movable orbiting scroll according to the utility model embodiment.

Figure 28 shows the stereogram according to the anti-rotation mechanism with utility model embodiment.

Figure 29 shows the anti-rotation mechanism according to the utility model embodiment-wear-resistant gasket assembling schematic diagram.

Figure 30 shows the wear-resistant gasket according to the utility model embodiment-movable orbiting scroll assembling schematic diagram.

Figure 31 shows the oil return pipe assembling schematic diagram according to the utility model embodiment.

Figure 32 shows the relation of the refrigerant circulation path and oil return pipe installation site according to the utility model embodiment.

Figure 33 shows a kind of oil blocking cover assembling schematic diagram of the utility model embodiment.

Figure 34 shows upper oil blocking cover and lower oil blocking cover in Figure 33.

Figure 35 shows the utility model embodiment another kind oil blocking cover assembling schematic diagram.

Figure 36 shows upper oil blocking cover and lower oil blocking cover in Figure 35.

Embodiment

Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that this practicality is new The design of example embodiment fully and completely, and will be comprehensively communicated to those skilled in the art by type.It is identical in figure Reference represent same or similar structure, thus repetition thereof will be omitted.

The defects of in order to improve prior art, the utility model provide a kind of compressor, it is therefore preferable to automobile-used vertical whirlpool Revolve compressor.Below with vertical compressor, i.e., shafting transmission mechanism use vertical with vortex pump body axis, exemplified by description Each embodiment of utility model, but the utility model is not limited to this, and compressor provided by the utility model is equally applicable to Horizontal type structure.Compressor provided by the utility model is preferred for electric automobile use, but the utility model is not so limited.

A kind of specific embodiment of the present utility model is described with reference to Fig. 1 to Figure 13 first.

In the present embodiment, vertical compressor includes housing 3 including fixed scroll 2 and the compression mechanism and electricity of movable orbiting scroll 15 Machine mechanism.Preferably, vertical compressor also includes upper lid 1.

Housing 3 has the first opening.Alternatively, housing 3 is cast member.Housing 3 includes a barricade, and barricade is by accommodation space It is divided into low pressure chamber 309 and controller chamber 302.Low pressure chamber 309 houses motor mechanism.Controller chamber 302 is provided with one second opening. Vertical compressor also includes controller chamber lid 4 and electric-controlled parts.The opening of the sealing of controller chamber lid 4 second.Specifically, device chamber processed Lid 4 and housing 3 realize sealing and fastening by sealing ring 9 (or gasket seal, or fluid sealant) and bolt 10.Electric-controlled parts It is arranged in the controller chamber 302 between controller chamber lid 4 and barricade.Alternatively, hole 307 is additionally provided with housing 3 and is used for The housing wiring hole that binding post 21 is connected with motor lead-out wire 1201.

Fixed scroll 2 includes the low-pressure side 202 for being provided with scroll wrap 201 and backwards to the high-pressure side 206 of scroll wrap 201.Fixed scroll 2 Low-pressure side 202 and housing 3 the first opening it is relative to form an accommodation space.Preferably, the low pressure of housing 3 and fixed scroll 2 The accommodation space that side 202 is formed is optionally class cuboid.But the utility model not limited to this, accommodation space for example can also be The shapes such as class cylinder, class square.Alternatively, housing 3 and fixed scroll 2 pass through sealing ring 7 (or gasket seal, or fluid sealant) And bolt 8 realizes sealing and fastening.Preferably, fixed scroll is wear-resisting high-strength degree Al-alloy parts, such as reflectal, extruding Cast aluminium alloy gold etc. (wherein, the strength of materials of high-strength aluminum alloy part and compactness are superior to conventional cast part).Alternatively, One or more mounting legs 207,303 are additionally provided with fixed scroll 2 and housing 3, compressor is arranged in automobile.

High pressure chest 2014 is formed between upper lid 1 and the high-pressure side 206 of fixed scroll 2.Air bleeding valve is installed in high pressure chest 2014 Piece 30 and exhaust screen.Alternatively, upper lid 1 and quiet whirlpool are realized by sealing ring 5 (or gasket seal, or fluid sealant) and bolt 6 The sealing and fastening of disk 2.The low-pressure side 202 of fixed scroll 2 is also formed with suction muffler 203.It is additionally provided with fixed scroll 2 and high pressure chest 2014 exhaust outlets 2012 being connected and the air entry 2010 being connected with suction muffler 203.Fixed scroll 2 is additionally provided with air-breathing spiral shell Pit 2011 and exhaust screwed hole.Suction muffler 203 connects with air entry 2010.In other words, the quiet whirlpool of high-strength aluminum alloy material A part of the disk 2 as compressor case, air entry 2010, the exhaust outlet 2012 of compressor are each provided in fixed scroll 2.Due to height Strength aluminium alloy, such as the strength of materials of the material such as forging or extrusion casint and compactness are better than casting, therefore air entry 2010th, the air-tightness of exhaust outlet 2012 and screw strength are more preferable.Meanwhile machining position and the machined surface of the housing 3 of casting Product is less, and the air-tightness of housing 3 is more preferable, and then can improve the air-tightness of complete machine.

Movable orbiting scroll 15 is located in accommodation space.Movable orbiting scroll 15 is provided with the side of scroll wrap 1501 and the low-pressure side of fixed scroll 2 202 is relative, and the scroll wrap 201 of fixed scroll 2 and the scroll wrap 1501 of movable orbiting scroll 15 form compression chamber.

Motor mechanism includes rotor 20 and motor stator 12.Motor mechanism is located at the low pressure chamber 309 in accommodation space. Motor mechanism is used to drive movable orbiting scroll 15 to rotate relative to fixed scroll 2, to compress the refrigerant in compression chamber.

Specifically, compressor refrigerant path is：Refrigerant enters suction muffler 203, suction muffler by air entry 2010 203 connect with low pressure chamber 309, and refrigerant flows into fixed scroll afterwards by flowing into fixed scroll low-pressure side 202 after low pressure chamber 309 Compressed in the compression chamber that scroll wrap 201 and movable orbiting scroll scroll wrap 1501 are formed, the refrigerant after compressing passes through steam vent 209 High pressure chest 2014 is flowed into, refrigerant is discharged among the exhaust outlet 2012 connected with high pressure chest 2014 afterwards.Further, refrigerant Vertical compressor is flowed into from the air entry 2010 of fixed scroll 2, and is flowed backwards to fixed scroll to the bottom wall of housing 3, refrigerant passes through shell The barricade of body 3 to be cooled down to the electric-controlled parts in controller chamber 302, and cold-producing medium stream through motor mechanism with to motor mechanism Cooled down, then flowed into the compression chamber that fixed scroll 2 is formed with movable orbiting scroll 15.

As above, compressor provided by the utility model is vertical structure, whole because accommodation space is rectangle like in housing The length of machine is more shorter than horizontal compressor, while keeps previous level in height, takes less horizontal stroke when on automobile More stably lubricating oil bath 31 can be formed to the bottom of installing space, and the low pressure chamber 309 of compressor, lubricant effect is more preferable, The reliability of compressor can be improved, and reduces the oil drain quantity of compressor.In addition, if solid impurity passes through the He of air entry 2010 Suction muffler 203 enters in compressor, and impurity meeting preferential deposition is in the bottom of low pressure chamber 309, therefore impurity enters fixed scroll 2 and moved The probability very little for the pump body compression chamber that whirlpool disk 15 forms, the risk for causing the pump housing to damage because impurity enters can be substantially reduced.

Alternatively, in the present embodiment, compressor also includes upper bracket 11 and lower carriage 13.Upper bracket 11 and lower carriage 13 Through hole provided with insertion, so that Bearning mechanism passes through.Upper bracket 11 and the low-pressure side 202 of fixed scroll 2 are connected.It is specific and Speech, bolt 29 through the screwed hole 2015 that is set in bolt hole and fixed scroll 2 is set on upper bracket 11 so that upper bracket 11 with The low-pressure side 202 of fixed scroll 2 is connected.Lower carriage 13 is connected by motor stator 12 and upper bracket 11.Specifically, In the present embodiment, the first side and second side opposite with the first side that upper bracket 11 includes with fixed scroll 2 is connected.Upper branch Multiple upper bracket boss 1105 are provided with second side of frame 11.Each upper bracket boss 1105 is provided with screwed hole 1106.It is optional Ground, upper bracket 11 include four bolt holes 1106, and the line of centres of four bolt holes 1106 forms square Shape, the utility model not limited to this.Motor stator 12 is provided with multiple first bolt holes corresponding with screwed hole 1106.Under Support 13 is provided with multiple second bolt holes corresponding with screwed hole 1106.Bolt 35 passes through the second bolt hole, the first spiral shell Bolt throughhole and screwed hole 1106 are so that upper bracket 11, motor stator 12 and lower carriage 13 to be connected.Preferably, upper bracket 11, Motor stator 12, lower carriage 13 hang on the low-pressure side of fixed scroll 2, and with 3 contactless part of housing.

Upper bracket 11, motor stator 12, lower carriage 13 are lifted in fixed scroll 2 after being installed together, upper bracket 11, electricity Machine stator 12, lower carriage 13 do not contact with housing 3, can avoid motor vibration caused with transmission mechanism during compressor operation and make an uproar Sound is directly spread out of by housing 3, so as to improve the noise and vibration performance of complete machine.Due to eliminating motor stator 12 and shell The interference fit of body 3, the element precision requirement to housing 3 and motor stator 12 can be relaxed, therefore production cost can be reduced.This Outside, the mounting structure also may be implemented in compressor assembling process to the visual inspection of internal all parts, can reduce dress Maloperation probability during with operation.Therefore, the mounting structure can optimize part processing and the assembly method of compressor, be advantageous to Reduce production cost.

The oil circuit that the utility model offer compressor is described with reference to Figure 14 to Figure 36 designs.In the vertical of the present embodiment The structure of compressor is similar with Fig. 1 to Figure 16, and vertical compressor includes housing 3, compression mechanism and motor mechanism.Housing 3 has First opening.Compression mechanism includes fixed scroll 2 and movable orbiting scroll 3.The low-pressure side 202 of fixed scroll 2 is relative with the first opening of housing 3 To form an accommodation space.Motor mechanism includes the rotor and motor stator 12 in accommodation space.Motor stator 12 It is connected by upper bracket 11 and fixed scroll 2.In the present embodiment, vertical compressor also includes an eccentric crankshaft 19, pump oil cylinder 25th, oil pump 26, the oil pump shaft 27 of insertion, upper bearing (metal) 17, lower bearing 18.Motor mechanism, oil pump 26 and lower bearing 18 are arranged at The low-pressure side of vertical compressor.

Eccentric crankshaft 19 is connected to the rotor 20 of motor mechanism to transmit revolving force, and eccentric crankshaft 19 includes a major axis Portion 1909.The first end of long axle portion 1909 is provided with an eccentric pin hole 1901, and the second end is provided with a cam pin 1908.Long axle portion 1909 A shoulder portion 1907 is additionally provided between cam pin 1908.The inside of eccentric crankshaft 19 has an oil-through-hole 1902.Oil-through-hole 1902 Run through eccentric crankshaft 19 along the length direction of eccentric crankshaft 19.Oil-through-hole 1902 includes the first oil pipe for penetrating long axle portion 1909 1906 and insertion cam pin 1908 the second oil pipe 1903.First oil pipe and the second oil pipe UNICOM in shoulder portion 1907.

Pump oil cylinder 25, it is arranged on lower carriage 13.Pump oil cylinder 25 is formed with oil pumping chamber 2502.Pump oil cylinder 25 is additionally provided with suction Oilhole 2501.The bottom of housing 3 is provided with an oil sump 31, the UNICOM's pump oil cylinder 25 of oil-sucking hole 2501 and oil sump 31.

Oil pump 26 is arranged in oil pumping chamber 2502.Oil pump 26 includes an oil pump body 2609.Oil pump body 2609 has one The oil pump through hole 2602 axially penetrated through.First side of oil pump body 2609 is provided with the outage 2601 of a radial extension.Outage 2601 UNICOM's oil pump through holes 2602.The circumference of oil pump body 2609 has an oil pump blade 2608.Oil pump blade 2608 is with described Lubricating oil is pressed into outage 2601 by the rotation of oil pump body 2609.The oil pump that oil pump body 2609 is additionally provided with an axial direction is recessed Groove 2603.Oil pump groove 2603 is arranged on the inwall of oil pump through hole 2602 and is open towards oil pump shaft 27.Oil pump groove 2603 For lubricating oil by be lubricated between the outer wall of the inwall of oil pump through hole 2602 and oil pump shaft 27.

The both ends of oil pump shaft 27 are socketed in oil pump 26 and the eccentric pin hole 1901 of long axle portion 1909 respectively, UNICOM's oil pump 26 with partially The oil-through-hole 1902 of innermost being axle 19.

Upper bearing (metal) 17 is socketed the shoulder portion 1907 of eccentric crankshaft 19.Lower bearing 18 is arranged on lower carriage 13.Lower bearing 18 It is socketed the first end of the long axle portion 1909 of eccentric crankshaft 19.Upper bracket 11 is socketed on upper bearing (metal) 17.

Alternatively, the lower carriage 13 being connected with motor stator 12 is provided with through hole 1303.Pump oil cylinder 25, oil pump 26, oil Pump shaft 27 and lower bearing 18 are arranged in through hole 1303.Annular groove 1302 is additionally provided with the through hole 1303 of lower carriage 13.Annular groove Back-up ring 24 is provided with 1302.The end face of pump oil cylinder 25 is close to back-up ring 24.It is close to an oil pump end plate in the other end of pump oil cylinder 25 28.Oil pump end plate 28 is arranged on lower carriage 13.Oil pump end plate 28 is provided with the fuel feed hole 2801 connected with oil-sucking hole 2501, described Fuel feed hole 2801 is provided with filter screen.

Alternatively, cam pin 1908 is additionally provided with a radial direction oil hole 1904.Radial direction oil hole 1904 from cam pin 1908 The inwall of two oil pipe 1903 is penetrated to the outer wall of cam pin 1908.Cam pin 1908 is additionally provided with the first oil groove 19051.First oil groove 19051 with the UNICOM of radial direction oil hole 1904, and positioned at cam pin 1908 outer wall and upper bearing (metal) 17 inwall between.

Alternatively, movable orbiting scroll 15 is provided with bearing hole 1502 backwards to the side of fixed scroll 2.One Moving plate bearing 16 is arranged on axle In bearing bore 1502.Cam pin 1908 inserts bearing hole 1502.Moving plate bearing 16 is located at cam pin 1908 and the inwall of bearing hole 1502 Between.Cam pin 1908 is additionally provided with the second oil groove 19052.Second oil groove 19052 and the UNICOM of the first oil groove 19051, and be located at Between the outer wall of cam pin 1908 and the inwall of Moving plate bearing 16.Alternatively, eccentric crankshaft 19 towards one end of movable orbiting scroll 15 with Logical oil pocket 19053 is formed between the bottom wall of bearing hole 1502, logical oil pocket 19053 connects with the oil groove 19052 of oil-through-hole 1902 and second It is logical.

Alternatively, vertical compressor also includes anti-rotation mechanism 200.Anti-rotation mechanism 200 is arranged on upper bracket 11 with moving Between whirlpool disk 15.Anti-rotation mechanism 200 is a cyclic structure, and is provided with towards the key 2001 of upper bracket 11 and towards movable orbiting scroll 15 key 2002.The quantity of key 2001 can be two, and two keys 2001 are relative.The quantity of key 2002 can also be two, And two keys 2002 are relative.Corresponding to key 2002, movable orbiting scroll 15 is provided with for anti-rotation mechanism 200 backwards to the side of fixed scroll 2 The keyway 1503 that slides wherein of key 2002.

Further, upper bracket 11 is provided with cavity 1101, the keyway to communicate with one another towards the side of the fixed scroll 2 1102 and counterbore 1103.The shoulder portion 1907 of counterbore 1103 and eccentric crankshaft 19, which forms one, can accommodate the first oil sump of lubricating oil 1103A.Cavity 1101 is around counterbore 1103.One annular boss is between cavity 1101 and counterbore 1103.Cavity 1101 is formed One can accommodate the second oil sump 1101A of lubricating oil.Keyway 1102 slides wherein for the key 2001 of anti-rotation mechanism 200.Keyway 1102 insertion annular boss and UNICOM's cavity 1101 and counterbore 1103, lubricating oil is set to flow to the second oil from the first oil sump 1103A Pond 1101A, to be lubricated between key 2001 and keyway 1102, between key 2002 and keyway 1503.

Alternatively, upper bracket 11 is additionally provided with the oil-through-hole 1107 of radial direction.Vertical compressor also includes oil return pipe 32.Oil return One end of pipe 32 is arranged in the oil-through-hole 1107 of upper bracket 11, and the other end of oil return pipe 32 extends to the coil of motor stator 12 Outside.Oil return pipe 32 flows into fixed scroll scroll wrap 201 from air entry 2010 away from refrigerant and movable orbiting scroll scroll wrap 1501 is formed Compression chamber circulation passage.Specifically, the position in the oil return gap between oil return pipe 32, motor stator 12 and housing 3 is remote The circulation path of internal compression chamber is flowed into from compressor air suction mouth 2010 from refrigerant.

Alternatively, vertical compressor also includes wear-resistant gasket 14.Wear-resistant gasket 14 be located at upper bracket 11 and movable orbiting scroll 15 it Between.Wear-resistant gasket 14 includes the partly overlapping through hole 1401 of keyway 1503 with movable orbiting scroll 15 for the key of anti-rotation mechanism 200 2002 pass through.The ultimate range at the center of wear-resistant gasket 14 to the edge of through hole 1401 is L1, and movable orbiting scroll 15 is towards motor mechanism one The radius of side end face is R1, and the eccentric throw that movable orbiting scroll 15 carries out eccentric revolution relative to fixed scroll 2 is r1, then R1 ＞ L1+r1.

Alternatively, vertical compressor also includes upper oil blocking cover 22 and lower oil blocking cover 23.In the present embodiment, upper oil blocking cover 22 On upper bracket 11.Lower oil blocking cover 23 is arranged on lower carriage 13, upper oil blocking cover 22, lower oil blocking cover 23, upper bracket 11, electricity Machine stator 12, lower carriage 13 form closed space 34, and (space 34 is located at stator coil inner side, in some change case, space 34 can also be by limiting on the outside of stator coil), the rotor 20 is contained in the space 34.Upper oil blocking cover 22 is with Oil blocking cover 22 can be the endless member of broken line tee section.In some change case, upper oil blocking cover 22 and/or lower oil blocking cover 23 are pacified On motor stator 12, such as it is installed in the stator faces of inner or outer side of stator coil.In other change case, Upper oil blocking cover 22 or lower oil blocking cover 23 can also be arranged on housing 3.In other change case, lower oil blocking cover 23 and lower carriage 13 are combined into same part, and cooperatively form more closed space 34 (as schemed between upper oil blocking cover 22, motor stator 12 35 and Figure 36).In other words, in this alternative, the lower end closed of lower carriage 13.Upper oil blocking cover 22 and lower oil blocking cover 23 with can be with Connected by bolt/bonding/force fit and the installation of each part.

Thus, upper oil blocking cover 22, lower oil blocking cover 23 and upper bracket 11, motor stator 12, lower carriage 13 complement each other to form One more closed space 34, and rotor 20 is wrapped in space 34.The more closed space 34 can be by outside it Lubricating oil be substantially isolated with the rotor 20 in it, eccentric crankshaft 19.

Vertical compressor operates in the following way, and the motor stator 12 after energization drives eccentric crankshaft 19 to rotate at a high speed, Eccentric crankshaft 19 drives movable orbiting scroll 15 to carry out eccentric revolution relative to fixed scroll 2.Refrigerant enters low pressure by air entry 2010 Fixed scroll low-pressure side 202 is flowed into after chamber 309, inflow fixed scroll scroll wrap 201 and movable orbiting scroll scroll wrap 1501 are formed afterwards Is compressed in compression chamber, the refrigerant after compressing flows into high pressure chest 2014 by steam vent 209, afterwards by with high pressure chest The exhaust outlet 2012 of 2014 connections discharges compressor.

Eccentric crankshaft 19 drives oil pump 26 to be turned round relative to pump oil cylinder 25 by oil pump shaft 27, makes to be stored in compressor The lubricating oil of the oil sump 31 of the bottom of low pressure chamber 309 is inhaled into oil pumping chamber by the fuel feed hole 2801 with filter screen and oil-sucking hole 2501 2502 and discharged by outage 2601.

The lubricating oil discharged from outage 2601 is divided into two parts：The groove that wherein sub-fraction lubricating oil passes through oil pump 2603 flow into lower bearing aperture, and the good profit between oil pump shaft 27 and oil pump 26, between eccentric crankshaft 19 and lower bearing 18 can be achieved It is sliding；Another most of lubricating oil passes through the through hole 2701 of oil pump shaft and the axial oil-through-hole 1902 of eccentric crankshaft 19 and inflow second Oil pipe 1903.

The lubricating oil for flowing into the second oil pipe 1903 is divided into two parts again：A portion lubricating oil passes through radial direction oil hole 1904 The first oil groove 19051 of eccentric crankshaft outer surface is flowed into, friction pair between eccentric crankshaft 19 and upper bearing (metal) 17 is lubricated；Separately A part of lubricating oil flows into the second oil groove 19052 of eccentric crankshaft outer surface by leading to oil pocket 19053, to eccentric crankshaft 19 and moves Friction pair is lubricated between dish axle holds 16.

Because the rotating speed of compressor is higher and drives the run-in synchronism of oil pump 26, has more lubricating oil and arrived by rapid pump Oil groove 19051 and 19052, and the counterbore 1103 of upper bracket 11 is flowed into by oil groove 19051 and 19052, therefore almost moment is just Have lubricating oil and accumulate in the middle oil sump 1103A of formation in counterbore 1103.When fuel head is sufficiently high, lubricating oil passes through upper branch The keyway 1102 of frame 11 flows into cavity 1101 and middle oil sump 1101B is formed in cavity 1101, therefore lubricating oil can be abundant It is dipped into and is rubbed between the keyway 1503 of the keyway 1102 of the key 2001 to anti-rotation mechanism and support 11, key 2002 and movable orbiting scroll 15 Pair is wiped to be lubricated.

And lubricating oil can be dipped into the side of the fixed scroll 2 backwards of movable orbiting scroll 15 by the through hole 1401 of wear-resistant gasket 14, With running at high speed for movable orbiting scroll 15, the lubricating oil for being dipped into its back side can be applied to wear-resistant gasket 14 and movable orbiting scroll by movable orbiting scroll 15 On supporting surface between 15, the lubrication between wear-resistant gasket 14 and movable orbiting scroll 15 is realized.Due to movable orbiting scroll 15 and wear-resistant gasket 14 Matching relationship meet R1 ＞ L1+r1 so that the through hole 1401 of wear-resistant gasket 14 is all the time by movable orbiting scroll 15 backwards to fixed scroll 2 End face is covered, therefore the lubrication backwards to the side of fixed scroll 2 of movable orbiting scroll 15 is dipped into by the through hole 1401 of wear-resistant gasket 14 Oil is all the time by the scroll wrap 201 and movable orbiting scroll that are covered backwards to the end face of fixed scroll 2 without flowing into fixed scroll 2 of movable orbiting scroll 15 The compression chamber that 15 scroll wrap 1501 cooperatively forms.

And upper oil blocking cover 22, lower oil blocking cover 23, upper bracket 11, motor stator 12, lower carriage 13 complement each other to form compared with For closed space 34 and rotor 20 is wrapped in space 34, lubricating oil is isolated within space 34 substantially, can base Originally the rotor 20 of rotation at a high speed or bent axle 19 is avoided to stir lubricating oil and lubricating oil is got rid of to the free air space for flying to refrigerant In.

In addition, the lubricating oil accumulated in cavity 1101 flows to the end of motor stator 12 by oil return pipe 32, and pass through Gap between motor stator 12 and housing 3 returns to the oil sump 31 of the bottom of compressor low pressure chamber 309, is achieved in lubricating oil and is pressing Recycling inside contracting machine.

Due to refrigerant from compressor air suction mouth 2010 is entered up to the scroll wrap 201 and movable orbiting scroll for flowing into fixed scroll The free air space that the compression chamber that scroll wrap 1501 cooperatively forms is passed through all is distributed in the top of compressor low pressure chamber 309, and moistens The oil sump 31 of lubricating oil is located at the bottom of low pressure chamber 309, and above-mentioned lubricating oil is from the fuel feed hole 2801 with filter screen until logical The gap crossed between motor stator 12 and housing 3 return to oil sump 31 compressor interior oil circulation overall process can realize lubricating oil with Refrigerant circulation is substantially isolated, therefore is significantly reduced lubricating oil as refrigerant circulates and be discharged the probability of compressor.

To sum up, the lubricating system of this kind of screw compressor can realize nearly all friction to compressor internal drive mechanism Secondary good lubrication, and can avoid lubricating oil as refrigerant circulates substantially and discharge compressor, compressor can be greatly reduced Oil drain quantity.

Compared with prior art, the motor that the utility model avoids rotating at a high speed by the setting of upper oil blocking cover and lower oil blocking cover Rotor or bent axle agitation lubricating oil simultaneously get rid of lubricating oil in the free air space for flying to refrigerant, realize point of lubricating oil and refrigerant From, lubricating oil is significantly reduced as refrigerant circulates and is discharged the probability of compressor, raising compressor reliability.

Illustrative embodiments of the present utility model are particularly shown and described above.It should be understood that the utility model Be not limited to disclosed embodiment, on the contrary, the utility model be intended to cover it is various comprising within the scope of the appended claims Modification and equivalent replacement.

Claims (9)

1. A kind of 1. compressor, it is characterised in that including：

   Housing (3), the bottom of the housing (3) are provided with an oil sump (31)；

   Compression mechanism, including fixed scroll (2) and movable orbiting scroll (15), at least described movable orbiting scroll (15) are arranged in the housing (3), The fixed scroll (2) and the movable orbiting scroll (15) are relative and form compression chamber；

   Motor mechanism, it is arranged in the housing (3), including rotor (20) and motor stator (12)；

   Upper oil blocking cover (22) and lower oil blocking cover (23), it is arranged in the housing (3), the upper oil blocking cover (22), lower oil blocking cover (23) and its part is installed it is collectively forming closed space (34), the rotor (20) is contained in the space (34) It is interior.
2. 2. compressor as claimed in claim 1, it is characterised in that the upper oil blocking cover (22) and/or the lower oil blocking cover (23) it is arranged on the motor stator (12).
3. 3. compressor as claimed in claim 1, it is characterised in that upper oil blocking cover (22) and/or lower oil blocking cover (23) are arranged on On the housing (3).
4. 4. compressor as claimed in claim 1, it is characterised in that also include：

   Upper bracket (11), it is connected with the low-pressure side (202) of the fixed scroll (2)；

   Lower carriage (13), it is connected by the motor stator (12) with the upper bracket.
5. 5. compressor as claimed in claim 4, it is characterised in that

   The upper oil blocking cover (22) is arranged on the upper bracket (11)；

   The lower oil blocking cover (23) is arranged on the lower carriage (13).
6. 6. compressor as claimed in claim 5, it is characterised in that the lower oil blocking cover (23) and the lower carriage (13) one Shaping.
7. 7. compressor as claimed in claim 5, it is characterised in that the lower carriage (13) is integrally formed with the housing (3).
8. 8. the compressor as described in any one of claim 1 to 7, it is characterised in that

   At least by forming closed space on the outside of the upper oil blocking cover (22), lower oil blocking cover (23) and the motor stator (12) (34)；Or

   At least by forming closed space on the inside of the upper oil blocking cover (22), lower oil blocking cover (23) and the motor stator (12) (34)。
9. 9. the compressor as described in any one of claim 1 to 7, it is characterised in that the upper oil blocking cover (22) and the lower block Oil cover (23) is the endless member of broken line tee section.