CN206206159U - Rotary compressor and the freezing cycle device with it - Google Patents

Abstract

The utility model discloses a kind of rotary compressor and the freezing cycle device with it, rotary compressor includes housing and compression mechanism, compression mechanism is located in housing, compression mechanism includes base bearing, cylinder assembly, supplementary bearing and bent axle, base bearing is provided with delivery valve seat, the internal perisporium of base bearing is provided with oil groove, cylinder assembly includes at least one cylinder, cylinder has the vane slot for radially extending, the upper oil-out of oil groove is with delivery valve seat respectively positioned at the both sides of datum level, wherein datum level was the center of vane slot and the center of base bearing and the plane vertical with the upper surface of base bearing.According to rotary compressor of the present utility model, improve the structural strength of base bearing, so as to efficiently reduce the amount of deflection of base bearing upper end when bent axle runs, and then the abrasion at the upper oil-out position of base bearing upper end is efficiently avoid, improve the reliability of rotary compressor.

Description

Rotary compressor and the freezing cycle device with it

Technical field

The utility model is related to Compressor Technology field, more particularly, to a kind of rotary compressor and the freezing with it EGR.

Background technology

In correlation technique, oil groove is typically provided with the internal perisporium of the base bearing of rotary compressor, the starting point of oil groove is located at The bottom of base bearing, and the lower maximum direction of face pressure of gas force effect is avoided, starting point determines that rear screw rises to the upper of base bearing Portion is meeting fuel delivery demand.However, in the design process, not accounting for the circumferential position of oil-out on base bearing, bent axle fortune Flexural deformation during row may increase the amount of deflection of base bearing upper end so that oil-out position wear out failure on base bearing, reduce The reliability of rotary compressor.

Utility model content

The utility model is intended at least solve one of technical problem present in prior art.Therefore, of the present utility model One purpose is to propose a kind of rotary compressor, and the reliability of the rotary compressor is high.

Another purpose of the present utility model is to propose a kind of freeze cycle dress with above-mentioned rotary compressor Put.

According to the rotary compressor of the utility model first aspect, including：Housing；Compression mechanism, the compression mechanism It is located in the housing, the compression mechanism includes base bearing, cylinder assembly, supplementary bearing and bent axle, the base bearing is located at institute The top and the supplementary bearing of stating cylinder assembly are located at the bottom of the cylinder assembly, and the main shaft is run through in the lower end of the bent axle Hold, the cylinder assembly and the supplementary bearing, the base bearing is provided with delivery valve seat, and the internal perisporium of the base bearing is provided with Oil groove, the cylinder assembly includes at least one cylinder, and the cylinder has the vane slot for radially extending, goes out on the oil groove Hydraulic fluid port is located at the both sides of datum level with the delivery valve seat respectively, wherein the datum level was center and the institute of the vane slot State the center of base bearing and the plane vertical with the upper surface of the base bearing.

According to rotary compressor of the present utility model, base is respectively provided at by by the upper oil-out of oil groove and delivery valve seat The both sides in quasi- face so that the side where above oil-out avoids delivery valve seat, improve the structural strength of base bearing, so that effectively Reduce the amount of deflection of base bearing upper end when bent axle runs, and then efficiently avoid at the upper oil-out position of base bearing upper end Abrasion, improve the reliability of rotary compressor.

In addition, can also have following additional technical characteristic according to rotary compressor of the present utility model：

According to some embodiments of the present utility model, the straight line at the center of excessively described upper oil-out and the center of the cylinder It is α with the angle of the datum level, the α meets：α≥10°.

According to some embodiments of the present utility model, the cylinder has an air entry, the inner face of the air entry away from With the line and the angle of the datum level at the center of the cylinder it is θ from the solstics of the vane slot, the θ meets：θ≥ α。

Specifically, the center of the excessively described cylinder and straight line vertical with the datum level is on the base bearing upper surface First straight line is projected as, projection of the delivery valve seat with the vane slot on the base bearing upper surface is located at described first Minimum between the same side of straight line, and projection and the first straight line of the delivery valve seat on the base bearing upper surface Distance is h, and the h meets：H ＞ 0.

According to some embodiments of the present utility model, the diameter of axle of the bent axle is d, and the d meets：12mm≤d≤24mm.

According to some embodiments of the present utility model, the internal diameter of the cylinder is D, and the D meets：35mm≤D≤70mm.

According to some embodiments of the present utility model, the diameter of axle of the bent axle is d, and the internal diameter of the cylinder is D, the d, D meets：0.27≤d/D≤0.32.

According to some embodiments of the present utility model, the minimum wall thickness (MINI W.) of the wheel hub of the base bearing is t1, the oil groove Groove depth is t2, and described t1, t2 meet：t1-t2≥2mm.

Alternatively, the rotary compressor is duplex cylinder compressor.

According to the freezing cycle device of the utility model second aspect, including according to the above-mentioned first aspect of the utility model Rotary compressor.

According to the freezing cycle device of the utility model second aspect, by setting according to the above-mentioned first party of the utility model The rotary compressor in face, improves the overall performance of freezing cycle device.

Additional aspect of the present utility model and advantage will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined Become substantially and be readily appreciated that, wherein：

Fig. 1 is the cut-away view of the rotary compressor according to the utility model embodiment；

Fig. 2 is the top view of base bearing according to the utility model embodiment and cylinder assembly；

Fig. 3 is the efficiency according to the rotary compressor of the utility model embodiment with the diameter of axle of bent axle and the internal diameter of cylinder Ratio value changes curve map.

Reference：

Rotary compressor 100,

Upper shell 11, main casing 12, lower house 13,

Base bearing 21, delivery valve seat 211, oil groove 212, upper oil-out 2121, wheel hub 213,

Cylinder 22, vane slot 221, air entry 222, supplementary bearing 23, bent axle 24, dividing plate 25, piston 26,

Upper muffler 27, bottom silencer 28,

Stator 31, rotor 32,

Datum level 4, first straight line 5.

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng The embodiment for examining Description of Drawings is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model Limitation.

In description of the present utility model, it is to be understood that term " " center ", " length ", " width ", " thickness ", " on ", D score, "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " axial direction ", " radial direction ", " circumference " etc. The orientation or position relationship of instruction are, based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model Described with simplified, must be with specific orientation, with specific orientation structure rather than the device or element for indicating or imply meaning Make and operate, therefore it is not intended that to limitation of the present utility model.Additionally, term " first ", " second " are only used for describing mesh , and it is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, limit Surely there is " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".It is new in this practicality In the description of type, unless otherwise indicated, " multiple " is meant that two or more.

, it is necessary to explanation, unless otherwise clearly defined and limited, term " is pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly Connection；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Can be two connections of element internal.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it D score can include the first and second feature directly contacts, it is also possible to including the first and second features not be directly contact but logical The other characterisation contact crossed between them.And, fisrt feature second feature " on ", " top " and " above " include the One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than second feature.First is special Levy second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or only Represent that fisrt feature level height is less than second feature.

The rotary compressor 100 according to the utility model embodiment is described below with reference to Fig. 1-Fig. 3.Wherein, rotatably Compressor 100 can be vertical compressor, or horizontal compressor.In description below the application, rotatably to press Contracting machine 100 be vertical compressor as a example by illustrate.

As shown in figure 1, according to the rotary compressor 100 of the utility model first aspect embodiment, including：Housing and pressure Contracting mechanism.

Reference picture 1, housing includes the upper shell 11, main casing 12 and the lower house 13 that are sequentially connected from top to bottom, it is specific and Speech, the top and bottom of main casing 12 are opened wide, and upper shell 11 is connected to the top of main casing 12, and lower house 13 is connected to master The bottom of housing 12, for example, upper shell 11 and lower house 13 can be respectively welded to the top and bottom of main casing 12.Wherein, Housing is preferably rotary structure.

Compression mechanism is located in housing, and compression mechanism includes base bearing 21, cylinder assembly, supplementary bearing 23 and bent axle 24, main Bearing 21 is located at the top of cylinder assembly and supplementary bearing 23 is located at the bottom of cylinder assembly, and base bearing is run through in the lower end of bent axle 24 21st, cylinder assembly and supplementary bearing 23.Base bearing 21 is provided with the delivery valve seat 211 for being vented, and delivery valve seat 211 is base bearing 21 rigid most weak position.The internal perisporium of base bearing 21 is provided with oil groove 212, oil groove 212 by base bearing 21 bottom spiral The top of base bearing 21 is risen to, the top of base bearing 21 has upper oil-out 2121.

Cylinder assembly includes at least one cylinder 22.Wherein, cylinder assembly can include a cylinder 22, it is also possible to including Multiple cylinders 22.When cylinder assembly includes a cylinder 22, rotary compressor 100 is single cylinder compressor, works as cylinder assembly During including multiple cylinders 22, rotary compressor 100 is multicylinder compressor, such as duplex cylinder compressor, three cylinder compressors etc..

For example, in the example of fig. 1, rotary compressor 100 is duplex cylinder compressor, is provided between two neighboring cylinder 22 Dividing plate 25, base bearing 21 is located at the upper end of the cylinder 22 of top, the lower end of the cylinder 22 that supplementary bearing 23 is positioned below.Cylinder 22 has There are compression chamber, air entry 222 and connected with compression chamber and along the vane slot 221 for radially extending of cylinder 22, be provided with compression chamber Piston 26, piston 26 is set on the eccentric part of bent axle 24, and piston 26 can be rolled along the inwall of compression chamber, is set in vane slot 221 Inner the stopping with the periphery wall of piston 26 respectively for having movably slide plate, slide plate is divided into suction muffler and exhaust to by compression chamber Chamber, air entry 222 is connected with suction muffler so as to refrigerant to be compressed is fed in compression chamber, discharge chamber is used for the refrigerant after compression It is expelled to outside cylinder 22.Wherein, direction " interior " can be understood as the direction towards the center of cylinder 22, and its rightabout is defined as " outward ", i.e., away from the direction at the center of cylinder 22.

Motor is provided with housing, motor includes stator 31 and rotor 32, and rotor 32 includes the iron core of rotor 32 with axis hole, bent Stretch into and coordinate with rotor 32 in the axis hole of the iron core of rotor 32 in the upper end of axle 24.When motor works, rotor 32 drives and is set in song Piston 26 on the eccentric part of axle 24 is rotated, and is compressed with to the refrigerant entered into compression chamber.

Reference picture 2, the upper oil-out 2121 of oil groove 212 is located at the both sides of datum level 4 with delivery valve seat 211 respectively, wherein Datum level 4 was the center of vane slot 221 and the center of base bearing 21 and the plane vertical with the upper surface of base bearing 21.Example Such as, in the figure 2 example, delivery valve seat 211 is located at the right side of datum level 4, and upper oil-out 2121 is located at the left side of datum level 4. Thus, it is possible to so that side where upper oil-out 2121 avoids delivery valve seat 211, improves the structural strength of base bearing 21, So as to efficiently reduce the amount of deflection of the upper end of base bearing 21 when bent axle 24 runs, and then efficiently avoid the upper end of base bearing 21 Abrasion at the position of upper oil-out 2121, improves the reliability of rotary compressor 100.

Rotary compressor 100 according to the utility model embodiment, by by the upper oil-out 2121 of oil groove 212 with row Air valve seat 211 is respectively provided at the both sides of datum level 4 so that upper oil-out 2121 avoids the side at the place of delivery valve seat 211, improves The structural strength of base bearing 21, so as to efficiently reduce the amount of deflection of base bearing 21 upper end when bent axle 24 runs, and then effectively Avoid abrasion at the position of upper oil-out 2121 of the upper end of base bearing 21, improve the reliability of rotary compressor 100.

Utility model people has found that traditional rotary compressor 100 does not account for the upper oil-out 2121 of base bearing 21 The position in the circumference of base bearing 21, when upper oil-out 2121 and delivery valve seat 211 are located at the same side of datum level 4, bent axle 24 Flexural deformation during operation will increase the amount of deflection of the upper end of base bearing 21 so that the position of upper oil-out 2121 abrasion of base bearing 21 is lost Effect.Utility model people is had found by many experiments, when the set location of upper oil-out 2121 and datum level 4 meet certain relation Afterwards, the structural strength of the base bearing 21 of rotary compressor 100 can be effectively improved, the reliability of rotary compressor 100 is improved Property.

Specifically, go up excessively the center of oil-out 2121 and the straight line at the center of cylinder 22 and the angle of datum level 4 be α (such as Shown in Fig. 2), α meets：α≥10°.Wherein, the concrete numerical value of α can be adjusted according to the The concrete specification model of rotary compressor 100 Whole design, the application is not especially limited to this.For example, α can further meet：α=10 °, α=12 ° or α=15 ° etc..By This, can effectively improve the structural strength of base bearing 21, reduce the amount of deflection of the upper end of base bearing 21 when bent axle 24 runs, so as to enter The reliability and process is simple of rotary compressor 100 are improve to one step, processing cost is low.

According to some embodiments of the present utility model, cylinder 22 has an air entry 222, the inner face of air entry 222 away from It is θ from the line at the solstics of vane slot 221 and the center of cylinder 22 and the angle of datum level 4, θ meets：θ≥α.This area Technical staff is appreciated that the line at the solstics apart from vane slot 221 of the inner face of air entry 222 and the center of cylinder 22 It is the air-breathing cut-off angles of cylinder 22 with the angle theta of datum level 4.In θ angular ranges, compression mechanism is in breathing process, refrigerant Do not compressed, now bent axle 24 is not acted on by gas force, so as to flexural deformation will not be produced.Thus, further reduce The amount of deflection of the upper end of base bearing 21, it is to avoid the abrasion at the position of upper oil-out 2121 of the upper end of base bearing 21, so that further Improve the reliability of rotary compressor 100.

Specifically, center and the straight line vertical with datum level 4 being projected as on the upper surface of base bearing 21 of cylinder 22 are crossed First straight line 5, projection of the delivery valve seat 211 with vane slot 221 on the upper surface of base bearing 21 is positioned at the same side of first straight line 5 Minimum between (for example, the upside in Fig. 2), and projection and first straight line 5 of the delivery valve seat 211 on the upper surface of base bearing 21 Distance is h, and h meets：H ＞ 0.For example, referring to Fig. 2, projection and first straight line of the delivery valve seat 211 on the upper surface of base bearing 21 Minimum range between 5 between the lower end of projection of the delivery valve seat 211 on the upper surface of base bearing 21 and first straight line 5 away from From.Thus, it is possible to so that delivery valve seat 211 away from base bearing 21 wheel hub 213, so as to improve the wheel hub 213 of base bearing 21 Structural strength.

According to some embodiments of the present utility model, the diameter of axle of bent axle 24 is d, and d meets：12mm≤d≤24mm.Its is specific Numerical value can be not especially limited according to the The concrete specification model adjusted design of rotary compressor 100, the utility model to this. For example, the diameter of axle d of bent axle 24 can further meet：D=12mm, d=18mm or d=24mm etc..Thus, it is possible to effectively carry The structural strength of bent axle high 24, such that it is able to effectively prevent the flexural deformation in the process of running of bent axle 24.

According to some embodiments of the present utility model, the internal diameter of cylinder 22 is D, and D meets：35mm≤D≤70mm.Its is specific Numerical value can be not especially limited according to the The concrete specification model adjusted design of rotary compressor 100, the utility model to this. For example, the internal diameter D of cylinder 22 can further meet：D=35mm, D=55mm or D=70mm etc..Thus, it is possible to effectively prevent The only gas leakage in cylinder 22, so as to be effectively improved the efficiency of rotary compressor 100.

According to some embodiments of the present utility model, the diameter of axle of bent axle 24 is d, and the internal diameter of cylinder 22 is D, and d, D meet： 0.27≤d/D≤0.32.As shown in figure 3, the diameter of axle and cylinder 22 of the efficiency (COP) of rotary compressor 100 with bent axle 24 The increase of the ratio between internal diameter is in the variation tendency of first increases and then decreases.As the diameter of axle d and the internal diameter D of cylinder 22 of bent axle 24 Ratio meets：During 0.27≤d/D≤0.32, the efficiency of rotary compressor 100 is optimal.

According to some embodiments of the present utility model, the minimum wall thickness (MINI W.) of the wheel hub 213 of base bearing 21 is t1, oil groove 212 Groove depth is t2, and t1, t2 meet：t1-t2≥2mm.Thus, it is possible to effectively ensure the structural strength of base bearing 21, rotation is improved The reliability of formula compressor 100.

Specifically, muffler 27 and bottom silencer 28 can be provided with rotary compressor 100, upper muffler 27 can be with It is set on base bearing 21, bottom silencer 28 can be set on supplementary bearing 23, upper muffler 27 and bottom silencer 28 can change Noise when kind rotary compressor 100 runs.

Rotary compressor 100 according to the utility model embodiment, reliability is high and efficiency is high.

Freezing cycle device (not shown) according to the utility model second aspect embodiment, including it is new according to this practicality The rotary compressor 100 of the above-mentioned first aspect embodiment of type.

Specifically, freezing cycle device also include condenser, expansion mechanism, evaporator, wherein condenser, expansion mechanism with Evaporator is sequentially connected, the blast pipe of rotary compressor 100 be connected with condenser and the air intake duct of rotary compressor 100 with Evaporator is connected.So, escaped and enter to cold from blast pipe by the HTHP refrigerant after the compression of rotary compressor 100 Condensation heat exchange is carried out in condenser, then gas carries out reducing pressure by regulating flow treatment into expansion mechanism, in flowing into evaporator again afterwards It is evaporated heat absorption and is accordingly changed into low-temp low-pressure refrigerant, this part low-temp low-pressure refrigerant is finally back to rotary compressor again It is compressed in 100 compression chamber, so far completes a kind of refrigeration cycle.

It is above-mentioned according to the utility model by setting according to the freezing cycle device of the utility model second aspect embodiment The rotary compressor 100 of first aspect embodiment, improves the overall performance of freezing cycle device.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described Structure, material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned art The schematic representation of language is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or Person's feature can in an appropriate manner be combined in one or more any embodiments or example.

While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that： In the case where principle of the present utility model and objective is not departed from various changes, modification, replacement can be carried out to these embodiments And modification, scope of the present utility model limits by claim and its equivalent.

Claims (10)

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

Housing；

Compression mechanism, the compression mechanism is located in the housing, and the compression mechanism includes base bearing, cylinder assembly, countershaft Hold and bent axle, the base bearing is located at the top of the cylinder assembly and the supplementary bearing is located at the bottom of the cylinder assembly, The base bearing, the cylinder assembly and the supplementary bearing are run through in the lower end of the bent axle, and the base bearing is provided with air bleeding valve Seat, the internal perisporium of the base bearing is provided with oil groove, and the cylinder assembly includes at least one cylinder, and the cylinder has radially The vane slot of extension, the upper oil-out of the oil groove is located at the both sides of datum level with the delivery valve seat respectively, wherein the base Quasi- face was the center of the vane slot and the center of the base bearing and the plane vertical with the upper surface of the base bearing.

2. rotary compressor according to claim 1, it is characterised in that the center of excessively described upper oil-out and the gas The straight line at the center of cylinder is α with the angle of the datum level, and the α meets：α≥10°.

3. rotary compressor according to claim 2, it is characterised in that the cylinder has air entry, the air-breathing The solstics of vane slot described in the distance of the inner face of mouth is with the line at the center of the cylinder and the angle of the datum level θ, the θ meets：θ≥α.

4. the rotary compressor according to any one of claim 1-3, it is characterised in that the center of excessively described cylinder and The straight line vertical with the datum level is projected as first straight line on the base bearing upper surface, the delivery valve seat with it is described Projection of the vane slot on the base bearing upper surface is positioned at the same side of the first straight line, and the delivery valve seat is described The minimum range between projection and the first straight line on base bearing upper surface is h, and the h meets：H ＞ 0.

5. rotary compressor according to claim 1, it is characterised in that the diameter of axle of the bent axle is d, the d meets： 12mm≤d≤24mm。

6. rotary compressor according to claim 1, it is characterised in that the internal diameter of the cylinder is D, the D meets： 35mm≤D≤70mm。

7. rotary compressor according to claim 1, it is characterised in that the diameter of axle of the bent axle is d, the cylinder Internal diameter is D, and described d, D meet：0.27≤d/D≤0.32.

8. rotary compressor according to claim 1, it is characterised in that the minimum wall thickness (MINI W.) of the wheel hub of the base bearing is T1, the groove depth of the oil groove is t2, and described t1, t2 meet：t1-t2≥2mm.

9. rotary compressor according to claim 1, it is characterised in that the rotary compressor is twin-tub compression Machine.

10. a kind of freezing cycle device, it is characterised in that including the rotary pressure according to any one of claim 1-9 Contracting machine.