CN203453065U - Rotary compressor and compression device thereof - Google Patents

Rotary compressor and compression device thereof Download PDF

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Publication number
CN203453065U
CN203453065U CN201320509568.7U CN201320509568U CN203453065U CN 203453065 U CN203453065 U CN 203453065U CN 201320509568 U CN201320509568 U CN 201320509568U CN 203453065 U CN203453065 U CN 203453065U
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CN
China
Prior art keywords
seal ring
main shaft
rotary compressor
compression
oil outlet
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Expired - Fee Related
Application number
CN201320509568.7U
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Chinese (zh)
Inventor
宋鹏杰
吴延平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Midea Toshiba Compressor Corp
Guangdong Meizhi Compressor Co Ltd
Original Assignee
Guangdong Meizhi Compressor Co Ltd
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Application filed by Guangdong Meizhi Compressor Co Ltd filed Critical Guangdong Meizhi Compressor Co Ltd
Priority to CN201320509568.7U priority Critical patent/CN203453065U/en
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Publication of CN203453065U publication Critical patent/CN203453065U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a rotary compressor and a compression device thereof. The compression device comprises an upper bearing and a crankshaft, wherein a balance cavity is defined in the upper bearing; the crankshaft comprises an intermediate shaft and a main shaft; a balance weight extending outwards along the radial direction is arranged on the intermediate shaft; the intermediate shaft passes through the upper bearing and then extends into the balance cavity; the balance weight is arranged in the balance cavity in a rotatable manner; the main shaft is coaxial with the intermediate shaft and is arranged above the intermediate shaft; oil outlets are formed in the peripheral wall, close to the balance weight, of the main shaft; a seal ring is arranged between the balance weight and the oil outlets and is used for isolating the oil outlets from the balance cavity. According to the compression device provided by the utility model, the seal ring is arranged between the oil outlets and the balance weight to isolate the oil outlets from the balance cavity, so that the problem that the oil yields of oil outlets are reduced when high pressure gases enter the balance cavity is solved, lubrication between the main shaft and the upper bearing is effectively ensured, and the reliability of the rotary compressor is improved.

Description

Rotary compressor and compression set thereof
Technical field
The utility model relates to art of refrigeration units, especially a kind of rotary compressor and compression set thereof.
Background technique
Variable-frequency type single cylinder rotary compressor has the advantages that rotating speed is controlled, and can reach that low temperature heats fast, high temperature cooling object fast, is conducive to efficiency and temperature control.Yet, due to be fixed on the centrifugal force of epitrochanterian equilibrium block excessive and run up in the perturbing of bent axle, abrasion, the vibration that causes producing main shaft increases and the problem of compressor work Efficiency Decreasing.Although twin-tub rotation-type compressor can address the above problem, but compare with single cylinder rotary compressor, the shortcoming of duplex-cylinder rotary compressor is the increase due to slip component, and slippage loss and gas leakage loss also can increase thereupon, also can increase manufacture cost simultaneously.
Have and in some rotary compressors, adopt jack shaft equilibrium block, on crank spindle and eccentric part, increase by one for the equilibrium block of balance, take dividing plate exhaust simultaneously, directly pressurized gas are entered to counter balance pocket, utilize the larger feature of counter balance pocket thickness to reduce exhaust noise.Yet, in rotary compressor running in counter balance pocket all the time in high pressure conditions, and because the main shaft oil outlet of bent axle communicates with counter balance pocket, thereby make the pressure at central hole of the crankshaft place higher than the pressure of main casing inside, now central hole of the crankshaft is in barotropic state, thereby under some operating mode, may cause main shaft for the abrasion of shortage of oil or increase main shaft and upper bearing (metal), and then affect the reliability of rotary compressor.
Model utility content
The utility model is intended at least solve one of technical problem existing in prior art.For this reason, an object of the present utility model be to propose that a kind of oil pump capacity of oil outlet is high, the compression set for rotary compressor that lubricity is good and reliability is high between main shaft and upper bearing (metal).
According to another object of the present utility model, be to propose a kind of rotary compressor with above-mentioned compression set.
The compression set for rotary compressor according to the utility model first aspect embodiment, comprising: upper bearing (metal), limits counter balance pocket in described upper bearing (metal); And bent axle, described bent axle comprises: jack shaft, and described jack shaft is provided with the equilibrium block extending radially outward, and described jack shaft stretches in described counter balance pocket through described upper bearing (metal), and described equilibrium block is located in described counter balance pocket rotationally; And main shaft, described main shaft and described jack shaft coaxially arrange and are positioned at the top of described jack shaft, on the periphery wall of the described equilibrium block of vicinity of described main shaft, be formed with oil outlet, between wherein said equilibrium block and described oil outlet, be provided with seal ring for described oil outlet and described counter balance pocket are kept apart.
According to the utility model embodiment's the compression set for rotary compressor, by seal ring being set between oil outlet and equilibrium block, by oil outlet and counter balance pocket isolation, solved the problem of the oil pump capacity reduction of oil outlet when pressurized gas enter counter balance pocket, effectively guarantee lubricating between main shaft and upper bearing (metal), thereby improved the reliability of rotary compressor.In addition, this compression set simple and reasonable, vibrates little and cost is low.
In addition, according to the compression set for rotary compressor of the present utility model, also can there is following additional technical feature:
According to an embodiment of the present utility model, on the periphery wall of the described equilibrium block of vicinity of described main shaft, be formed with tool withdrawal groove, described oil outlet is formed in described tool withdrawal groove.
Further, described oil outlet is circular oil outlet, the internal diameter of described seal ring is Dn, after described seal ring and described spindle mounted put in place, the external diameter of described seal ring is Dw, described seal ring described bent axle axially on height be h, wherein, Dn, Dw, h is configured to respectively: Dn<D, Dw>Dm, h≤L-d/2, wherein, D is the external diameter at the described tool withdrawal groove of the correspondence of described main shaft place, Dm is the internal diameter of described upper bearing (metal), L is the distance between the upper-end surface of described equilibrium block and the center of described oil outlet, d is the diameter of described oil outlet.Thus, effectively prevented that the pressurized gas in counter balance pocket from spilling from the gap between seal ring and upper bearing (metal), bent axle, and can effectively prevent that seal ring from stopping up oil outlet.
According to another embodiment of the present utility model, in described tool withdrawal groove, be formed with the reentrant part inwardly concaving, described seal ring is located in the female portion.Thus, by reentrant part is set, has prevented that further rotary compressor from occurring that in running seal ring stops up the situation of oil outlet, thereby improved the reliability of rotary compressor.
Further, the external diameter at the corresponding the female portion place of described main shaft is D1, the width of the female portion is h1, wherein, D1, h1 are configured to respectively: Dn<D1≤2D-Dm, h≤h1≤L-d/2, wherein, Dn is the internal diameter of described seal ring, D is the external diameter at the described tool withdrawal groove of the correspondence of described main shaft place, the internal diameter that Dm is described upper bearing (metal), the height that h is described seal ring, L is the distance between the upper-end surface of described equilibrium block and the center of described oil outlet, the diameter that d is described oil outlet.
Alternatively, described seal ring is fluorine rubber part, acrylate rubber part, teflon part or metalwork.
Alternatively, described seal ring is O RunddichtringO, rectangular seal, D RunddichtringO, y-type seal ring, V-shaped seal ring or X-shaped sealing ring.
According to another embodiment of the present utility model, described seal ring and described integrated spindle axis moulding.Thus, avoided rotary compressor in During Process of Long-term Operation, to occur ring wear or movement etc. and impact confession oil condition, by seal ring and main shaft are arranged to one, not only can guarantee the seal action of seal ring, and reduced the operation of assembling rotary compressor, improved efficiency of assembling.
Further, the corresponding the female portion place of described seal ring and described main shaft is one-body molded, external diameter and the width at the described seal ring of the correspondence place of described main shaft are respectively D2 and h2, wherein, D2, h2 are configured to respectively: D2=D0, and h2 >=h3+1mm, wherein, D0 is the external diameter of described main shaft, and h3 is that described upper bearing (metal) and described bent axle are seated the distance between the upper-end surface of rear described equilibrium block and the roof of described counter balance pocket.
According to the utility model second aspect embodiment's rotary compressor, comprise the compression set for rotary compressor according to the above-mentioned first aspect embodiment of the utility model.
According to the utility model second aspect embodiment's rotary compressor, by above-mentioned first aspect embodiment's compression set is set, improved the reliability of rotary compressor.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming embodiment's description, wherein:
Fig. 1 is according to the schematic diagram of first embodiment's of the utility model rotary compressor;
Fig. 2 is the enlarged view of the A portion that shows of Fig. 1 centre circle;
Fig. 3 is the schematic diagram of the bent axle shown in Fig. 1 and seal ring;
Fig. 4 a and Fig. 4 b are the schematic diagram of the seal ring shown in Fig. 3;
Fig. 5 is according to the schematic diagram of second embodiment's of the utility model the compression set for rotary compressor;
Fig. 6 is the schematic diagram of the bent axle shown in Fig. 5 and seal ring;
Fig. 7 a and Fig. 7 b are the schematic diagram of the seal ring shown in Fig. 6;
Fig. 8 is according to the schematic diagram of the 3rd embodiment's of the utility model the compression set for rotary compressor;
Fig. 9 is the schematic diagram of the bent axle shown in Fig. 8 and seal ring;
Figure 10 a and Figure 10 b are the schematic diagram of the seal ring shown in Fig. 9;
Figure 11 is according to the schematic diagram of the 4th embodiment's of the utility model the compression set for rotary compressor;
Figure 12 is the schematic diagram of the bent axle shown in Figure 11 and seal ring;
Figure 13 is according to the schematic diagram of the 5th embodiment's of the utility model the compression set for rotary compressor;
Figure 14 is the schematic diagram of the bent axle shown in Figure 13 and seal ring.
Description of reference numerals:
1: upper bearing (metal); 11: counter balance pocket;
21: jack shaft; 211: equilibrium block; 22: main shaft; 221: tool withdrawal groove;
231: eccentric part; 24: countershaft;
3: seal ring;
4: cylinder; 5: lower bearing; 6: piston; 7: dividing plate;
200: rotary compressor;
201: housing; 2021: stator; 2022: rotor.
Embodiment
Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In description of the present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
Below with reference to Fig. 1-Figure 14, describe according to the utility model embodiment's the compression set for rotary compressor 200.
As shown in Figure 1-Figure 3, the compression set for rotary compressor 200 according to the utility model first aspect embodiment, comprises upper bearing (metal) 1 and bent axle.
With reference to Fig. 1, should also comprise cylinder 4 for the compression set of rotary compressor 200, lower bearing 5, piston 6 and slide plate (scheming not shown), particularly, cylinder 4 can form all unlimited cylindrical shapes of top and bottom, on cylinder 4, be formed with the vane slot radially extending along it, in upper bearing (metal) 1, limit counter balance pocket 11, upper bearing (metal) 1 and lower bearing 5 are located at respectively top and the bottom of cylinder 4, further, between the top of upper bearing (metal) 1 and cylinder 4, be provided with dividing plate 7, dividing plate 7, cylinder 4 and lower bearing 5 limit compression chamber jointly, in compression chamber, be provided with piston 6, and this piston 6 can be driven along the inwall of compression chamber and can be rolled by bent axle, slide plate is located in vane slot movably, for example slide plate is located in vane slot by spring movably, one end of slide plate is stretched in compression chamber and is only supported piston 6.Further, on dividing plate 7, be formed with tap hole, the pressurized gas that rotary compressor 200 produces in running can enter by the tap hole on dividing plate 7 in the counter balance pocket 11 of upper bearing (metal) 1, and counter balance pocket 11 is in high pressure conditions.
Bent axle comprises jack shaft 21 and main shaft 22, and jack shaft 21 is provided with the equilibrium block 211 extending radially outward, and jack shaft 21 stretches in counter balance pocket 11 through upper bearing (metal) 1, and equilibrium block 211 is located in counter balance pocket 11 rotationally.For example, in the example of Fig. 1 and Fig. 3, bent axle also comprises eccentric shaft and countershaft 24, eccentric shaft and main shaft 22 coaxially arrange and are positioned at the below of main shaft 22, eccentric shaft is provided with the eccentric part 231 extending radially outward, eccentric part 231 can drive piston 6 to rotate in compression chamber, countershaft 24 and eccentric shaft coaxially arrange and are positioned at the below of eccentric shaft, jack shaft 21 is between main shaft 22 and eccentric shaft, one end of equilibrium block 211 is connected with the periphery wall of jack shaft 21, the other end extends radially outwardly along jack shaft 21, equilibrium block 211 is located at the top of jack shaft 21, now the contiguous main shaft 22 of equilibrium block 211 arranges, the top of upper bearing (metal) 1 is provided with the opening extending vertically, this opening is communicated with the counter balance pocket 11 of upper bearing (metal) 1 bottom, jack shaft 21 can extend in counter balance pocket 11 through this opening, now equilibrium block 211 is positioned at counter balance pocket 11, when rotating, can be with by bent axle dynamic balance weight 211 in the interior rotation of counter balance pocket 11.Alternatively, jack shaft 21 and equilibrium block 211 are one-body molded.Here, it should be noted that, " outward " can be understood as the direction away from the central axis of jack shaft 21, and its opposite direction is defined as " interior ", towards the direction of the central axis of jack shaft 21.
Main shaft 22 coaxially arranges with jack shaft 21, and main shaft 22 is positioned at the top of jack shaft 21, on the periphery wall of the contiguous equilibrium block 211 of main shaft 22, be formed with oil outlet, wherein between equilibrium block 211 and oil outlet, be provided with seal ring 3 for oil outlet and counter balance pocket 11 are kept apart.With reference to Fig. 1-Fig. 3, the central axes of main shaft 22 and jack shaft 21, and main shaft 22 is positioned at the top of jack shaft 21, the bottom of main shaft 22 is formed with the oil outlet radially extending along it, the upper-end surface of the bottom of oil outlet and equilibrium block 211 is spaced apart, seal ring 3 is located between the bottom of oil outlet and the upper-end surface of equilibrium block 211, and the inwall of seal ring 3 contacts with the outer wall of main shaft 22, its outer wall contacts with the internal face of upper bearing (metal) 1 opening, thereby oil outlet and counter balance pocket 11 are kept apart, make the pressure in oil outlet lower, thereby guaranteed the fuel delivery of main shaft 22 and upper bearing (metal) 1.
According to the utility model embodiment's the compression set for rotary compressor 200, by seal ring 3 being set between oil outlet and equilibrium block 211, by oil outlet and counter balance pocket 11 isolation, solved the problem of the oil pump capacity reduction of oil outlet when pressurized gas enter counter balance pocket 11, effectively guarantee lubricating between main shaft 22 and upper bearing (metal) 1, thereby improved the reliability of rotary compressor 200.In addition, this compression set simple and reasonable, vibrates little and cost is low.
In an embodiment of the present utility model, on the periphery wall of the contiguous equilibrium block 211 of main shaft 22, be formed with tool withdrawal groove 221, oil outlet is formed in tool withdrawal groove 221.For example, in the example of Fig. 1-Fig. 3, be formed with the center hole that runs through vertically it on bent axle, tool withdrawal groove 221 radially inwardly concaves from the periphery wall of main shaft 22, and oil outlet is communicated with along extending radially inwardly to center hole of main shaft 22 from the inwall of tool withdrawal groove 221.It will be appreciated that, the recessed degree of depth of tool withdrawal groove 221 can be according to actual requirement setting, to meet better actual requirement.
Further, oil outlet is circular oil outlet, and the internal diameter of seal ring 3 is Dn, and the external diameter that seal ring 3 and main shaft 22 are seated rear seal ring 3 is Dw, seal ring 3 bent axle axially on height be h,
Wherein, Dn, Dw, h are configured to respectively:
Dn<D,Dw>Dm,h≤L-d/2
Wherein, D is the external diameter at corresponding tool withdrawal groove 221 places of main shaft 22, and Dm is the internal diameter of upper bearing (metal) 1, and L is the distance between the upper-end surface of equilibrium block 211 and the center of oil outlet, the diameter that d is oil outlet.
For example, in the example of Fig. 1-Fig. 4, seal ring 3 is O RunddichtringO, the diameter of the inner ring of seal ring 3 under nature is Dn, now seal ring 3 is also unassembled to bent axle, Dn should meet: Dn<D, seal ring 3 can be enclosed within on main shaft 22 securely like this, after seal ring 3 and main shaft 22 are seated, the diameter of the outer ring of seal ring 3 is Dw, now Dw should meet: Dw>Dm, like this outer wall of seal ring 3 can with the internal face close contact of the opening of upper bearing (metal) 1, thereby effectively prevented that pressurized gas in counter balance pocket 11 are from seal ring 3 and upper bearing (metal) 1, gap between bent axle spills, seal ring 3, after upper bearing (metal) 1 and bent axle are seated, seal ring 3 is because extruding deforms, now the height of seal ring 3 on above-below direction is h, now h should meet: h≤L-d/2, can effectively prevent that like this seal ring 3 from stopping up oil outlet.
In the example of Fig. 5-Fig. 7, seal ring 3 is rectangular seal, the diameter of the inner ring of seal ring 3 under nature is Dn, now seal ring 3 is also unassembled to bent axle, Dn should meet: Dn<D, seal ring 3 can be enclosed within on main shaft 22 securely like this, after seal ring 3 and main shaft 22 are seated, the diameter of the outer ring of seal ring 3 is Dw, now Dw should meet: Dw>Dm, like this outer wall of seal ring 3 can with the internal face close contact of the opening of upper bearing (metal) 1, thereby effectively prevented that pressurized gas in counter balance pocket 11 are from seal ring 3 and upper bearing (metal) 1, gap between bent axle spills, seal ring 3, after upper bearing (metal) 1 and bent axle are seated, seal ring 3 is because extruding deforms, now the height of seal ring 3 on above-below direction is h, now h should meet: h≤L-d/2, by rectangular seal is set, increased the area of contact between seal ring 3 and the inwall of tool withdrawal groove 221, thereby further reduced the possibility that rotary compressor 200 stops up oil outlet in running.
In the example of Fig. 8-Figure 10, seal ring 3 is D RunddichtringO, the diameter of the inner ring of seal ring 3 under nature is Dn, now seal ring 3 is also unassembled to bent axle, Dn should meet: Dn<D, seal ring 3 can be enclosed within on main shaft 22 securely like this, after seal ring 3 and main shaft 22 are seated, the diameter of the outer ring of seal ring 3 is Dw, now Dw should meet: Dw>Dm, like this outer wall of seal ring 3 can with the internal face close contact of the opening of upper bearing (metal) 1, thereby effectively prevented that pressurized gas in counter balance pocket 11 are from seal ring 3 and upper bearing (metal) 1, gap between bent axle spills, seal ring 3, after upper bearing (metal) 1 and bent axle are seated, seal ring 3 is because extruding deforms, now the height of seal ring 3 on above-below direction is h, now h should meet: h≤L-d/2, by D RunddichtringO is set, in the area of contact having increased between seal ring 3 and the inwall of tool withdrawal groove 221, reduced the friction between the inwall of rotary compressor 200 opening of seal ring 3 and upper bearing (metal) 1 in running, thereby improved rotary compressor 200 and entered power.
Certainly, the utility model is not limited to this, and in other examples of the present utility model, seal ring 3 also can be y-type seal ring, V-shaped seal ring or X-shaped sealing ring etc.It will be appreciated that, the concrete shape of seal ring 3 can be according to actual requirement setting, to meet better actual requirement.
In another embodiment of the present utility model, in tool withdrawal groove 221, be formed with the reentrant part inwardly concaving, seal ring 3 is located in reentrant part.As shown in Figure 11 and Figure 12, reentrant part radially inwardly concaving from the inwall of tool withdrawal groove 221 along main shaft 22, seal ring 3 is located in reentrant part.It will be appreciated that, the recessed degree of depth of reentrant part can be according to actual requirement setting, to meet better actual requirement.
Further, the external diameter at the corresponding reentrant part place of main shaft 22 is D1, and the width of reentrant part is h1,
Wherein, D1, h1 are configured to respectively:
Dn<D1≤2D-Dm,h≤h1≤L-d/2
Wherein, Dn is the internal diameter of seal ring 3, and D is the external diameter at corresponding tool withdrawal groove 221 places of main shaft 22, and Dm is the internal diameter of upper bearing (metal) 1, and h is the height of seal ring 3, and L is the distance between the upper-end surface of equilibrium block 211 and the center of oil outlet, the diameter that d is oil outlet.
With reference to Figure 11 and Figure 12, on main shaft 22, the diameter at corresponding reentrant part place is D1, the width of reentrant part on above-below direction is h1, D1 should meet: Dn<D1≤2D-Dm, now the internal surface of seal ring 3 can with the inwall close contact of reentrant part, h1 should meet: h≤h1≤L-d/2, seal ring 3 can be contained in reentrant part completely like this, thereby further prevented that rotary compressor 200 from occurring that in running seal ring 3 stops up the situation of oil outlet, and then improved the reliability of rotary compressor 200.
Alternatively, seal ring 3 is fluorine rubber part, acrylate rubber part, teflon part or metalwork.That is to say, seal ring 3 can adopt fluorine rubber, acrylate rubber, teflon or metallic material to make.Wherein, fluorine rubber and acrylate rubber all can be used in petroleum base hydraulic oil, the lubricated ester oil of mineral base and flame retardancy hydraulic oil, the serviceability temperature scope of fluorine rubber is :-25 ℃~+ 180 ℃, the serviceability temperature scope of acrylate rubber is :-10 ℃~+ 130 ℃.Teflon is because wear resistance is splendid, and heat-resisting, cold tolerance is good, whole chemicals, solvent and the wet goods of ability almost, the serviceability temperature scope of teflon is :-100 ℃~+ 260 ℃.It will be appreciated that, the material of seal ring 3 can be chosen according to the characteristic of the kind of different colds and lubricant oil, to meet better actual requirement.Here, it should be noted that, cold and lubricated wet goods have been prior art, and are known by those skilled in the art, no longer describe in detail here.
In another embodiment of the present utility model, seal ring 3 and main shaft 22 are one-body molded.Now seal ring 3 and the whole manufacturing of main shaft 22, seal ring 3 is a part for main shaft 22, as shown in Figure 13 and Figure 14.Thus, avoided rotary compressor 200 in During Process of Long-term Operation, to occur seal ring 3 wearing and tearing or movement etc. and impact confession oil condition, by seal ring 3 and main shaft 22 are arranged to one, not only can guarantee the seal action of seal ring 3, and reduced the operation of assembling rotary compressor 200, improved efficiency of assembling.
Further, the corresponding reentrant part place of seal ring 3 and main shaft 22 is one-body molded, and external diameter and the width at corresponding seal ring 3 places of main shaft 22 are respectively D2 and h2,
Wherein, D2, h2 are configured to respectively:
D2=D0,h2≥h3+1mm
Wherein, D0 is the external diameter of main shaft 22, and h3 is that upper bearing (metal) 1 and bent axle are seated the distance between the upper-end surface of back balance piece 211 and the roof of counter balance pocket 11.
For example, in the example of Figure 13 and Figure 14, seal ring 3 and main shaft 22 are one-body molded, now the material of seal ring 3 is identical with the material of main shaft 22, for example seal ring 3 and main shaft 22 are all made of cast iron, the diameter at corresponding seal ring 3 places of main shaft 22 is D2, the diameter of the other parts on main shaft 22 except seal ring 3 and tool withdrawal groove 221 is D0, now D2 should meet: D2=D0, the width of seal ring 3 on above-below direction is h2, h2 should meet: h2 >=h3+1mm, the outer wall of seal ring 3 can contact with the internal face of the opening of upper bearing (metal) 1 like this, thereby effectively prevented that the pressurized gas in counter balance pocket 11 from spilling from the gap between seal ring 3 and upper bearing (metal) 1.
According to the utility model second aspect embodiment's rotary compressor 200, comprise the compression set for rotary compressor 200 according to the above-mentioned first aspect embodiment of the utility model.
In one of them example of the present utility model, rotary compressor 200 comprises housing 201 and driver, compression set is located in housing 201 and is positioned at the bottom of housing 201, driver is located in housing 201 and is positioned at the top of compression set, and alternatively, driver is motor, motor mainly comprises stator 2021 and rotor 2022, when compressor operating, driver can rotate by driving crank, thereby drives the piston 6 being enclosed within outside eccentric part 231 in compression chamber, to make together eccentric rotary.
According to the utility model second aspect embodiment's rotary compressor 200, by above-mentioned first aspect embodiment's compression set is set, improved the reliability of rotary compressor 200.
According to other formations of the utility model embodiment's rotary compressor 200 and operation, be all known to those skilled in the art, be not described in detail here.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiments, scope of the present utility model is limited by claim and equivalent thereof.

Claims (10)

1. for a compression set for rotary compressor, it is characterized in that, comprising:
Upper bearing (metal), limits counter balance pocket in described upper bearing (metal); With
Bent axle, described bent axle comprises:
Jack shaft, described jack shaft is provided with the equilibrium block extending radially outward, and described jack shaft stretches in described counter balance pocket through described upper bearing (metal), and described equilibrium block is located in described counter balance pocket rotationally; With
Main shaft, described main shaft and described jack shaft coaxially arrange and are positioned at the top of described jack shaft, on the periphery wall of the described equilibrium block of vicinity of described main shaft, be formed with oil outlet, between wherein said equilibrium block and described oil outlet, be provided with seal ring for described oil outlet and described counter balance pocket are kept apart.
2. the compression set for rotary compressor according to claim 1, is characterized in that, on the periphery wall of the described equilibrium block of vicinity of described main shaft, is formed with tool withdrawal groove, and described oil outlet is formed in described tool withdrawal groove.
3. the compression set for rotary compressor according to claim 2, is characterized in that, described oil outlet is circular oil outlet,
The internal diameter of described seal ring is Dn, and after described seal ring and described spindle mounted put in place, the external diameter of described seal ring is Dw, described seal ring described bent axle axially on height be h,
Wherein, Dn, Dw, h are configured to respectively:
Dn<D,Dw>Dm,h≤L-d/2
Wherein, the external diameter at the described tool withdrawal groove of the correspondence place that D is described main shaft, the internal diameter that Dm is described upper bearing (metal), the distance between the upper-end surface that L is described equilibrium block and the center of described oil outlet, the diameter that d is described oil outlet.
4. the compression set for rotary compressor according to claim 2, is characterized in that, is formed with the reentrant part inwardly concaving in described tool withdrawal groove, and described seal ring is located in the female portion.
5. the compression set for rotary compressor according to claim 4, is characterized in that, the external diameter at the corresponding the female portion place of described main shaft is D1, and the width of the female portion is h1,
Wherein, D1, h1 are configured to respectively:
Dn<D1≤2D-Dm,h≤h1≤L-d/2
Wherein, the internal diameter that Dn is described seal ring, the external diameter at the described tool withdrawal groove of the correspondence place that D is described main shaft, the internal diameter that Dm is described upper bearing (metal),
H is the height of described seal ring, the distance between the upper-end surface that L is described equilibrium block and the center of described oil outlet, the diameter that d is described oil outlet.
6. according to the compression set for rotary compressor described in any one in claim 1-5, it is characterized in that, described seal ring is fluorine rubber part, acrylate rubber part, teflon part or metalwork.
7. the compression set for rotary compressor according to claim 1, is characterized in that, described seal ring is O RunddichtringO, rectangular seal, D RunddichtringO, y-type seal ring, V-shaped seal ring or X-shaped sealing ring.
8. the compression set for rotary compressor according to claim 5, is characterized in that, described seal ring and described integrated spindle axis moulding.
9. the compression set for rotary compressor according to claim 8, is characterized in that, the corresponding the female portion place of described seal ring and described main shaft is one-body molded,
External diameter and the width at the described seal ring of the correspondence place of described main shaft are respectively D2 and h2,
Wherein, D2, h2 are configured to respectively:
D2=D0,h2≥h3+1mm
Wherein, the external diameter that D0 is described main shaft, h3 is that described upper bearing (metal) and described bent axle are seated the distance between the upper-end surface of rear described equilibrium block and the roof of described counter balance pocket.
10. a rotary compressor, is characterized in that, comprises as claimed in any one of claims 1-9 wherein the compression set for rotary compressor.
CN201320509568.7U 2013-08-20 2013-08-20 Rotary compressor and compression device thereof Expired - Fee Related CN203453065U (en)

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CN201320509568.7U CN203453065U (en) 2013-08-20 2013-08-20 Rotary compressor and compression device thereof

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Application Number Priority Date Filing Date Title
CN201320509568.7U CN203453065U (en) 2013-08-20 2013-08-20 Rotary compressor and compression device thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889075A (en) * 2015-01-26 2016-08-24 姚镇 Compressor system and air conditioner and refrigerating plant comprising same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889075A (en) * 2015-01-26 2016-08-24 姚镇 Compressor system and air conditioner and refrigerating plant comprising same

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