CN206206168U - Oil return framework and compressor with same - Google Patents

Abstract

The utility model provides a pair of oil return skeleton, its kind, oil return skeleton (110) include upper end open-ended and go up cavity (Q1) and lower extreme open-ended cavity down, go up cavity (Q1) with the cavity is separated by diaphragm (111) down, central through-hole (112) and gas pocket (113) have been seted up in diaphragm (111). According to the oil return framework and the compressor with the same, the oil return framework is fixedly connected to the outer rotor and can rotate along with the outer rotor, refrigerant gas compressed by the pump body enters the upper cavity of the oil return framework, and due to the fact that density of the refrigeration oil is different from that of the refrigerant gas, effective separation is achieved under the centrifugal effect of the oil return framework, and oil content of the refrigerant gas is reduced; the lower cavity body of the oil return framework is covered on the pump body, and the silencing effect can be effectively achieved.

Description

Oil return skeleton and the compressor with it

Technical field

The utility model is related to compressor field, more particularly to a kind of oil return skeleton and the compressor with it.

Background technology

The cylinder of rotary compressor is divided into high-pressure side and low-pressure side by the slide plate in cylinder vane slot, when bent axle rotation When, roller just rotates, and in refrigerant gas suction cylinder, is advanced with circular path again while roller rotates in cylinder, The compression heat release of refrigerant gas is completed by this effect.

Rotary compressor is made up of motor part and pump body portion, and motor is made up of rotor and stator, a kind of for rotor exists It is interior, stator electric machine structure as shown in Figure 1 outside.The motor compressor copper cash usage amount of the structure is big, rotor moment of inertia Small, low cruise is bigger than normal in the vibration of start/stop of compressor stage, and noise is also bigger than normal.Other conventional scheme is dropped using oil baffle The oil content of low compressor refrigerant gas, but oil baffle is limited to reducing the effect of compressor refrigerant gas oil content, arranges Gas often takes away a large amount of refrigeration oils, causes oil sump pasta to decline, pump housing lack of lubrication.

Compressor refrigerant oil content concerns compressor lubrication and system heat exchange property, and it just directly affects compression function How effect, more effectively carry out oily separation, and the oil content and raising pump housing lubricant effect for reducing refrigerant are to be badly in need of asking for solution Topic.Other compressor noise problem, is an importance for influenceing Consumer's Experience, is also of long-standing problem research staff Problem.

Utility model content

Based on this, it is necessary to for compressor refrigerant gas oil content it is high, consumption refrigeration oil cause the pump housing lubrication not Sufficient problem and noise problem, there is provided a kind of oil return skeleton and the compressor with it.

A kind of oil return skeleton that the utility model is provided, wherein, the upper cavity of the oil return skeleton including upper end open with And the lower chamber of lower ending opening, the upper cavity separates with the lower chamber by transverse slat, the transverse slat offer central through hole with And stomata.

In one of which embodiment, the epicoele body sidewall offers first through hole.

In one of which embodiment, the cavity of resorption body sidewall offers the second through hole.

In one of which embodiment, the lower chamber is section cavities structure.

In one of which embodiment, the lower chamber lower sidewall expansion makes the transversal of the bottom of the lower chamber Cross section of the face more than the lower chamber top.

In one of which embodiment, the stomata is provided with cofferdam on the transverse slat surface of upper cavity.

In one of which embodiment, the transverse slat upper surface and/or lower surface are concave surface.

In one of which embodiment, the central through hole inwall offers groove.

The utility model also provides a kind of compressor, and the compressor includes motor and the pump housing, and the motor includes outer Rotor and inner stator, wherein, the compressor includes oil return skeleton as described above, the upper cavity edge of the oil return skeleton It is fixedly connected with the outer rotor lower edge, the central through hole of the oil return skeleton is fixedly connected with the bent axle of the pump housing.

In one of which embodiment, the compressor also includes dividing plate, and dividing plate centre bore is offered on the dividing plate And annular slide track, the dividing plate centre bore is set on the upper flange of the pump housing, and the lower chamber edge of the oil return skeleton can It is contained in the annular slide track.

In one of which embodiment, the separator edge is abutted with compressor outer wall, is further opened with the dividing plate Third through-hole.

In one of which embodiment, the third through-hole be opened in the annular slide track between the bent axle And/or the third through-hole is opened between the annular slide track and compressor outer wall.

In one of which embodiment, the compressor also includes the first muffler, and first muffler is installed on The dividing plate top is simultaneously contained in the lower chamber of the oil return skeleton.

In one of which embodiment, the inner stator is connected to the compressor top cover, the pressure by connecting pole It is covered with blast pipe on contracting machine, the connecting pole and the refrigerant outlet stagger setting.

In one of which embodiment, the inner stator is connected to the compressor top cover, the company by connecting pole Post is connect for hollow tube, the hollow tube side wall offers passage, the compressor top cover is provided with blast pipe, the connecting pole with The refrigerator outlet overlaps and sets.

Above-mentioned oil return skeleton and the compressor with it, oil return skeleton are fixedly connected on outer rotor, can be with outer rotor Rotation, the refrigerant gas by pump body compression enter in the upper cavity of oil return skeleton, due to refrigeration oil and refrigerant gas Density is different, realizes efficiently separating under the centrifugal action of oil return skeleton, reduces the oil content of refrigerant gas；Oil return skeleton Lower chamber be located on the pump housing, sound deadening can be effectively played.

Above-mentioned oil return skeleton and the compressor with it, oil return skeleton transverse slat upper surface are concave surface, and stomata is in upper cavity Transverse slat surface is provided with cofferdam, and central through hole inwall offers groove, and the refrigeration oil for by skeleton structure centrifugal action separate can be stored up The groove for existing in upper cavity and being opened up by central through hole inwall flows into bent axle and flange land, the effectively lubrication of the lifting pump housing Effect.

Brief description of the drawings

In order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art, below will be to institute in embodiment The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only described in the utility model Some embodiments, for those of ordinary skill in the art, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is existing compressor cross-sectional view；

Fig. 2 is the preferred embodiment cross-sectional view of the utility model compressor one；

Fig. 3 is the oil return skeleton stereogram of compressor shown in Fig. 2；

Fig. 4 is oil return skeleton cross-sectional view shown in Fig. 3；

Fig. 5 A are a kind of structural representation of Fig. 2 median septums；

Fig. 5 B are another structural representation of Fig. 2 median septums；

Fig. 6 is the structural representation of connecting pole shown in Fig. 2；

Fig. 7 A are that the compressor fluid for being provided with dividing plate shown in Fig. 5 A flows to schematic diagram；

Fig. 7 B are that the compressor fluid for being provided with dividing plate shown in Fig. 5 B flows to schematic diagram.

Wherein,

Compressor -100；

Oil return skeleton -110；Transverse slat -111；Central through hole -112；Stomata -113；First through hole -114；Second through hole- 115；

Dividing plate -120；Dividing plate centre bore -121；Third through-hole -122；Annular slide track -123；Screw hole -124；

First muffler -130；

Connecting pole -140；Passage -141；

Motor -150；Inner stator -151；Outer rotor -152；

The pump housing -160；Bent axle -161；Upper flange -162；

Blast pipe -170；

Upper cavity-Q1.

Specific embodiment

In order that the purpose of this utility model, technical scheme and advantage become more apparent, by the following examples, and tie Accompanying drawing is closed, to oil return skeleton of the present utility model and the compressor with it is further elaborated.It should be appreciated that herein Described specific embodiment is only used to explain the utility model, is not used to limit the utility model.

Refer to shown in Fig. 2 to Fig. 7 B, the compressor 100 of the utility model one embodiment includes the motor 150, pump housing 160 and oil return skeleton 110.Wherein, motor 150 includes outer rotor 152 and inner stator 151, and outer rotor 152 passes through oil return bone Frame 110 is connected with the pump housing 160.

Oil return skeleton 110 includes the upper cavity Q1 of upper end open and the lower chamber (not shown) of lower ending opening, on Cavity Q1 is separated with lower chamber by transverse slat 111.The center of transverse slat 111 offers central through hole 112, central through hole 112 it is big It is small to be matched with bent axle 161, so that central through hole 112 can be enclosed within bent axle 161 and be fixed on bent axle 161, in going back for transverse slat 111 Some stomatas 113 are offered, stomata 113 can be circular, polygon or irregular through hole.The upper cavity of oil return skeleton 110 Q1 edges are fixedly connected with the lower edge of outer rotor 152, and the central through hole 112 of oil return skeleton 110 is set in the bent axle of the pump housing 160 It is fixedly connected on 161 and with bent axle 161, so that the lower chamber of oil return skeleton 110 covers on the top of the pump housing 160.Specifically, oil return bone Frame 110 is fixedly connected mode with outer rotor 152 can be interference fit, bolt connection, the connection side such as snap connection, be threadedly coupled Any one in formula, the mode that is fixedly connected of oil return skeleton 110 and bent axle 161 can be that interference fit, bolt connection, buckle connect Any one in connected mode such as connect, be threadedly coupled, so that oil return skeleton 110 is formed just with outer rotor 152 and bent axle 161 Property connection, enable outer rotor 152 by oil return skeleton 110 drive the pump housing 160 move.

As optional embodiment, first through hole 114 is offered on the wall of upper cavity Q1 sides, is offered on cavity of resorption body sidewall Two through holes 115, make upper cavity Q1 form loop with the housing of compressor 100 with the housing of compressor 100 and lower chamber.

For single gas and double its compressor 100, when compressor 100 is operated, the pump housing 160 is in motor 150 Lower operating is driven, refrigerant gas are compressed, the refrigerant gas with refrigeration oil through overcompression enter oil return skeleton 110 In lower chamber, a part is entered in the upper cavity Q1 of oil return skeleton 110 by the stomata 113 on transverse slat 111, oil return skeleton 110 Seat runs at high speed under the drive of outer rotor 152, because refrigeration oil is different from the density of refrigerant gas, can be in oil return skeleton Separated under 110 centrifugal action, gap and inner stator 151 of the refrigerant gas between outer rotor 152 and inner stator 151 Internal clearance continue rise or via upper cavity Q1 sides wall first through hole 114 discharge upper cavity Q1, refrigeration oil is along upper cavity Q1 sides wall flows downward or the discharge upper cavity Q1 of first through hole 114 via upper cavity Q1 sides wall and in centrifugal force and gravity Flowed downward along the side wall of compressor 100 under effect；The second through hole that another part is opened up by the cavity of resorption body side surface of oil return skeleton 110 115 outflows, due to centrifugal force and Action of Gravity Field, refrigeration oil directly flows back, and gas discharges compressor 100 upwards, realizes oil gas Efficiently separate.Additionally, the structure rotary inertia is taken, the vibration of the start and stop stage of compressor 100 can be effectively reduced, additionally, due to lower chamber The top of the pump housing 160 is covered on, sound deadening can be played, effectively reduce the noise of compressor 100.

Used as optional embodiment, the stomata 113 on transverse slat 111 is in the upper surface of transverse slat 111, that is, transverse slat 111 is positioned at upper The surface of cavity Q1 is provided with cofferdam；The upper surface of transverse slat 111, that is, transverse slat 111 is concave surface positioned at the surface of upper cavity Q1, also Be transverse slat 111 center than surrounding be in lower horizontal plane on.Refrigeration oil after Oil-gas Separation not only can not be from stomata In 113 inflow lower chambers, and can be to the center convergence of transverse slat 111.Preferably, the inwall of central through hole 112 of transverse slat 111 is opened up The refrigeration oil for having groove, the center convergence of upper cavity Q1 transverse slats 111 can flow into bent axle 161 and flange land by the groove, can Effectively the lubrication of the lifting pump housing 160, lifts the performance of compressor 100.

Used as optional embodiment, the upper surface of transverse slat 111 is additionally provided with oil-bearing structure, and the refrigeration oil after Oil-gas Separation can be stored up Exist in oil-bearing structure, the refrigeration oil in oil-bearing structure can introduce central through hole 112 by structures such as grooves, such that it is able to right The pump housing 160 is lubricated effect.

Used as optional embodiment, lower chamber is differed with the upper cavity Q1 cross-sectional sizes.

Used as optional embodiment, lower chamber is the cavity body structure of variable cross-section, and one kind is that the lower surface of transverse slat 111 is concave surface, Another kind be the lower sidewall of lower chamber to external expansion, can be gentle excessive expanded form, or side wall bent outward The extension form of folding, to form variable section structure in lower chamber.The compression refrigerant gas of the discharge of the pump housing 160 enters lower chamber Interior, due to lower chamber changes of section, gas part is cancelled out each other, and can preferably play sound deadening.

As optional embodiment, dividing plate 120 is additionally provided with compressor 100.Dividing plate 120 offer dividing plate centre bore 121, Annular slide track 123 and screw hole 124, dividing plate centre bore 121 are sheathed on upper flange 162 and are fixed on by screw hole 124 On upper flange 162, the lower chamber edge of oil return skeleton 110 can be contained in annular slide track 123, and fixed rotor is played in assistance Effect, reduces the bad situation of rotor coaxial degree.Preferably, the edge of dividing plate 120 is abutted with the outer wall of compressor 100, with further The housing of compressor 100 is simultaneously divided into upper and lower two parts by stationary barrier 120；Third through-hole 122 is offered on dividing plate 120, is referred to Shown in Fig. 5 A and Fig. 5 B, third through-hole 122 can be opened between annular slide track 123 and bent axle 161, it is also possible to be opened in annular Between slideway 123 and the outer wall of compressor 100.Can also start simultaneously in above-mentioned two position.The one side of third through-hole 122 can be with Oil return, on the other hand can make refrigerant gas pass through into the lower chamber of oil return skeleton 110 or enter on compressor 100 Portion.

As optional embodiment, be additionally provided with the first muffler 130 on compressor 100, the first muffler 130 be installed on every The top of plate 120 is simultaneously contained in the lower chamber of oil return skeleton 110, and the refrigerant gas after the compression of the discharge of the pump housing 160 are by the Secondary noise reduction is carried out in the lower chamber that oil return skeleton 110 is entered back into after the noise reduction of one muffler 130, it is preferred that under oil return skeleton 110 Cavity is variable section structure, and due to changes of section, the gas part of compressor 100 is cancelled out each other, and is provided with the first muffler The lower chamber of 130 cooperation oil return skeleton 110 can have two grades of erasure effects, reduce the pneumatic noise of compressor 100.

Used as optional embodiment, inner stator 151 is connected on compressor 100 by connecting pole 140 and covered, compressor 100 Upper lid offers refrigerant gas outlet or blast pipe 170, and connecting pole 140 and refrigerant outlet or blast pipe 170 stagger setting. Preferably, the two ends of connecting pole 140 are connected to lid centre bit on the upper end center position of inner stator 151 and compressor 100 Put, connecting pole 140 can be connected through a screw thread with inner stator 151, interference is connected, pin is connected, weld or the side such as snap connection Formula, its shape of connecting pole 140 is also not limited to circle, can be other irregular shapes for playing connection function, makes inner stator 151 fixed effects with balance.

Used as optional embodiment, inner stator 151 is connected on compressor 100 by hollow connecting pole 140 and covered, compressor Refrigerant gas outlet or blast pipe 170, the upper end outlet of hollow connecting pole 140 and refrigerant gas outlet weight are covered with 100 Close or be set in blast pipe 170 outer or internal, and the side wall of hollow connecting pole 140 offers passage 141, refrigerant gas energy Compressor 100 is enough discharged by refrigerant gas outlet or blast pipe 170 again after passage 141 enters connecting tube.

By said structure, the oil gas of compressor 100 forms oil sump and returns by oil return skeleton 110 using oil return skeleton 110 The centrifugal action of oily skeleton 110, effectively solves the lack of lubrication of 100 pump housing of compressor 160 and oil content problem high, using oil return bone Frame 110 forms sound deadening, effectively reduces the noise of compressor 100.The comprehensive utilization structure of outer rotor 152, it is used with reference to compressor 100 Property principle, lifted the low-speed stability of compressor 100.

The utility model description in, term " first ", " second " be only used for describe purpose, and it is not intended that indicate or Imply relative importance.

Meanwhile, in this specification it is cited such as " on ", D score, "left", "right", the term of " centre " and " ", also Only understanding for ease of narration, and be not used to limit the enforceable scope of the utility model, its relativeness is altered or modified, Under without essence change technology contents, when being also considered as the enforceable category of the utility model.

Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed, But therefore can not be interpreted as the limitation to the utility model the scope of the claims.It should be pointed out that common for this area For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (15)

1. a kind of oil return skeleton, it is characterised in that upper cavity (Q1) of the oil return skeleton (110) including upper end open and under The lower chamber of end opening, the upper cavity (Q1) is separated with the lower chamber by transverse slat (111), and the transverse slat (111) offers Central through hole (112) and stomata (113).

2. oil return skeleton according to claim 1, it is characterised in that upper cavity (Q1) side wall offers first through hole (114)。

3. oil return skeleton according to claim 1, it is characterised in that the cavity of resorption body sidewall offers the second through hole (115)。

4. oil return skeleton according to claim 1, it is characterised in that the lower chamber is section cavities structure.

5. oil return skeleton according to claim 4, it is characterised in that the lower chamber lower sidewall expansion, make it is described under Cross section of the cross section of the bottom of cavity more than the lower chamber top.

6. oil return skeleton according to claim 1, it is characterised in that transverse slat of the stomata (113) in upper cavity (Q1) (111) surface is provided with cofferdam.

7. oil return skeleton according to claim 1, it is characterised in that transverse slat (111) upper surface and/or lower surface are Concave surface.

8. the oil return skeleton according to any one of claim 1 to 7, it is characterised in that central through hole (112) inwall is opened It is provided with groove.

9. a kind of compressor, the compressor (100) includes motor (150) and the pump housing (160), and the motor (150) includes Outer rotor (152) and inner stator (151), it is characterised in that the compressor (100) includes such as any one of claim 1 to 8 Described oil return skeleton (110), upper cavity (Q1) edge and the outer rotor (152) lower edge of the oil return skeleton (110) It is fixedly connected, the central through hole (112) of the oil return skeleton (110) is fixedly connected with the bent axle (161) of the pump housing (160).

10. compressor according to claim 9, it is characterised in that the compressor (100) also includes dividing plate (120), institute State and dividing plate centre bore (121) and annular slide track (123) are offered on dividing plate (120), the dividing plate centre bore (121) is set in On the upper flange (162) of the pump housing (160), the lower chamber edge of the oil return skeleton (110) can be contained in the annular slide track (123) in.

11. compressors according to claim 10, it is characterised in that dividing plate (120) edge and compressor (100) Outer wall is abutted, and third through-hole (122) is further opened with the dividing plate.

12. compressors according to claim 11, it is characterised in that the third through-hole (122) is opened in the annular Slideway (123) between the bent axle (161) and/or the third through-hole (122) be opened in the annular slide track (123) with Between compressor (100) outer wall.

13. compressors according to claim 12, it is characterised in that the compressor (100) also includes the first muffler (130), first muffler is installed on the dividing plate (120) top and is contained in the lower chamber of oil return skeleton (110).

14. compressor according to any one of claim 9 to 13, it is characterised in that the inner stator (151) is by connection Post (140) is connected on the compressor (100) and covers, and blast pipe (170), the connection are covered with the compressor (100) Post (140) and the blast pipe (170) stagger setting.

15. compressor according to any one of claim 9 to 13, it is characterised in that the inner stator (151) is by connection Post (140) is connected on the compressor (100) and covers, and the connecting pole (140) is hollow tube, and the hollow tube side wall is offered Passage (141), is covered with blast pipe (170), the connecting pole (140) and the blast pipe on the compressor (100) (170) correspondence overlaps and sets.