CN204003462U - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN204003462U CN204003462U CN201420479579.XU CN201420479579U CN204003462U CN 204003462 U CN204003462 U CN 204003462U CN 201420479579 U CN201420479579 U CN 201420479579U CN 204003462 U CN204003462 U CN 204003462U
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- rotary compressor
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Abstract
The utility model discloses a kind of rotary compressor, comprising: housing, motor and compressing mechanism, housing comprises lower shell body assembly; Compressing mechanism comprises main bearing, cylinder and supplementary bearing assembly, and supplementary bearing assembly comprises supplementary bearing, and supplementary bearing comprises hub portion and flange part, when the discharge volume V of compression chamber is less than 13cm
3when/rev, 0.1≤P1/P2≤1.2; Work as 13cm
3/ rev≤V≤24cm
3when/rev, 0.1≤P1/P2≤1.5; When V is greater than 24cm
3when/rev, 0.1≤P1/P2≤2; Wherein, P1=H1/H2, P2=H3/H4, H1 is the perpendicular distance between center and the lower shell body assembly of hub portion lower surface, H3 is the perpendicular distance between edge and the lower shell body assembly of lower surface of flange part, and H2, H4 are respectively the height of supplementary bearing assembly, cylinder.According to rotary compressor of the present utility model, can reduce in its oil sump and be dissolved in the coolant quantity in refrigerator oil, improve the dissolving viscosity of refrigerator oil, ensure fuel delivery and the oil supplying quality of rotary compressor.
Description
Technical field
The utility model relates to art of refrigeration units, especially relates to a kind of rotary compressor.
Background technique
In correlation technique, point out, part refrigerant after rotary compressor compression can dissolve in the refrigerator oil of its oil sump, can make like this refrigerator oil dissolve reduced viscosity, thereby reduce the lubricating condition of moving element in rotary compressor, thereby reduced reliability and the working efficiency 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 is to propose a kind of rotary compressor, can reduce and in its oil sump, be dissolved in the coolant quantity in refrigerator oil.
According to the utility model embodiment's rotary compressor, comprising: housing, in described housing, there is oil sump, described housing comprises lower shell body assembly, motor, described motor is located in described housing, compressing mechanism, described compressing mechanism is connected with described motor, described compressing mechanism comprises main bearing, cylinder and supplementary bearing assembly, described main bearing is located at the top of described cylinder and described supplementary bearing assembly and is located at the bottom of described cylinder, described main bearing, between described supplementary bearing assembly and described cylinder, limit compression chamber, described supplementary bearing assembly comprises supplementary bearing, described supplementary bearing comprises vertically successively upwards connected hub portion and flange part, the transverse dimension of described hub portion is less than the transverse dimension of described flange part, when the discharge volume V of described compression chamber meets V < 13cm
3when/rev, P1/P2 meets: 0.1≤P1/P2≤1.2, when the discharge volume V of described compression chamber meets 13cm
3/ rev≤V≤24cm
3when/rev, described P1/P2 meets: 0.1≤P1/P2≤1.5, when the discharge volume V of described compression chamber meets V > 24cm
3when/rev, described P1/P2 meets: 0.1≤P1/P2≤2, wherein, P1=H1/H2, P2=H3/H4, described H1 is the perpendicular distance between center and the described lower shell body assembly of described hub portion lower surface, described H2 is the height of described supplementary bearing assembly on above-below direction, described H3 is the perpendicular distance between edge and the described lower shell body assembly of lower surface of described flange part, and described H4 is the height of described cylinder on above-below direction.
According to the utility model embodiment's rotary compressor, can reduce and in its oil sump, be dissolved in the coolant quantity in refrigerator oil, improve the dissolving viscosity of refrigerator oil, fuel delivery and the oil supplying quality of rotary compressor are ensured, improve the performance of rotary compressor, improved the reliability of rotary compressor.
Further, when the discharge volume V of described compression chamber meets V < 13cm
3when/rev, described P1/P2 further meets: 0.2≤P1/P2≤0.8; When the discharge volume V of described compression chamber meets 13cm
3/ rev≤V≤24cm
3when/rev, described P1/P2 further meets: 0.2≤P1/P2≤1.0; When the discharge volume V of described compression chamber meets V > 24cm
3when/rev, described P1/P2 further meets: 0.2≤P1/P2≤1.5.
Alternatively, the bottom surface of described lower shell body assembly is formed as cambered surface.
Or alternatively, the bottom surface of described lower shell body assembly is formed as plane.
Or alternatively, described lower shell body assembly has the lug boss of downward protrusion, described lug boss is relative up and down with described hub portion.
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.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming embodiment's description obviously and easily, wherein:
Fig. 1 is according to the partial schematic diagram of the utility model embodiment's rotary compressor;
Fig. 2 is another schematic diagram of the rotary compressor shown in Fig. 1;
Fig. 3 is dissolved in refrigerant content in oil sump and the graph of a relation of P1, P2 in the rotary compressor shown in Fig. 1;
Fig. 4 is the supply capability of bent axle and the graph of a relation of P2 of the rotary compressor shown in Fig. 1;
Fig. 5 is the coefficient of performance of the rotary compressor shown in Fig. 1 and the graph of a relation of P2;
Fig. 6 is according to being dissolved in refrigerant content, supply capability and the coefficient of performance in oil sump and the graph of a relation of P2 in the utility model embodiment's rotary compressor.
Reference character:
100: rotary compressor;
11: main casing; 12: lower shell body; 13: oil sump; 2: motor;
31: cylinder; 311: intakeport; 32: main bearing;
33: supplementary bearing; 331: hub portion; 332: flange part;
341: center oilhole; 342: oiling blade.
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.Be exemplary below by the embodiment who is described with reference to the drawings, 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 ", " length ", " thickness ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " axially ", " radially ", orientation or the position relationship of instructions such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of device or the element of instruction 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 addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, except as otherwise noted, the implication of " multiple " 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.
Describe according to the utility model embodiment's rotary compressor 100 below with reference to Fig. 1-Fig. 6.
As depicted in figs. 1 and 2, according to the utility model embodiment's rotary compressor 100, comprising: housing, motor 2 and compressing mechanism.
See figures.1.and.2, housing is vertically arranged, now the central axis of housing is vertical with its holding plane, motor 2 and compressing mechanism are all located in housing, motor 2 is connected with compressing mechanism, with drive compression mechanism, the refrigerant entering in the compression chamber of compressing mechanism is compressed, the bottom in housing has oil sump 13, and for example refrigerator oil of the lubricant oil in oil sump 13 can enter each moving element of compressing mechanism so that each moving element is lubricated.
Be appreciated that, housing can comprise upper shell (scheming not shown), main casing 11 and lower shell body assembly, main casing 11 can be formed as the cylindrical shape that top and bottom are all opened wide substantially, upper shell and lower shell body assembly are located at respectively top and the bottom of main casing 11, and this three limits the holding space for holding above-mentioned motor 2 and compressing mechanism jointly.Certainly, the concrete structure of housing can also be according to the type of different rotary compressor 100 and adaptive change, and the utility model is not made particular determination to this.Wherein, it should be noted that the lower shell body assembly in Fig. 1 and Fig. 2 only comprises lower shell body 12, but in the time other parts and this parts are installed on lower shell body 12 are positioned at housing, now lower shell body assembly comprises lower shell body 12 and above-mentioned parts.
Particularly, as depicted in figs. 1 and 2, compressing mechanism comprises cylinder 31, main bearing 32 and supplementary bearing assembly, the top of cylinder 31 and bottom are all opened wide, main bearing 32 is located at the top of cylinder 31, supplementary bearing assembly is located at the bottom of cylinder 31, and main bearing 32, between supplementary bearing assembly and cylinder 31, limit compression chamber, supplementary bearing assembly comprises supplementary bearing 33, supplementary bearing 33 comprises vertically successively upwards connected hub portion 331 and flange part 332, preferably coaxial setting of hub portion 331 and flange part 332, wherein, the transverse dimension of hub portion 331 is less than the transverse dimension of flange part 332.Here, it should be noted that, supplementary bearing assembly in Fig. 1 and Fig. 2 only comprises supplementary bearing 33, but supplementary bearing assembly, except comprising supplementary bearing 33, can also comprise other parts, for example, in the time that exhaust port is formed on supplementary bearing 33, can baffler (scheming not shown) be set in the side away from cylinder 31 of supplementary bearing 33, now supplementary bearing assembly comprises supplementary bearing 33 and baffler.
The application makes with cognitive the discovery of the following fact and problem based on model utility people: model utility people finds, when rotary compressor 100 moves, the exhaust port of refrigerant (being gas mixture) in compression chamber after compression from main bearing 32 discharged, now can be by near the pasta disturbance because of oil sump 13 exhaust port, the elaioleucite splashing and produce is taken out of together, these refrigerants flow to the upper space in housing through the gap between stator and the rotor of motor 2, in this process, because waiting other factors to deposit the refrigerator oil getting off, motor 2 filtrations are back to by the gap between stator and the inwall of housing in the oil sump 13 of housing bottom, and outside the relief opening discharge housing that remaining elaioleucite continues to move upward together with gaseous coolant by case top, for example enter air-conditioning system, finally following another intakeport 311 by housing of refrigerant enters in compression chamber, carry out next circulation.And in compressor, under near the effect of the oiling blade 342 of refrigerator oil oil sump 13 bottoms in the center of the bent axle of compressing mechanism oilhole 3414, upwards pump oil, and each moving element of compressing mechanism is lubricated, finally discharge compressing mechanism by the helical oil groove being arranged on main bearing 32, after this most of refrigerator oil flows to oil sump 13 downwards, and small part is followed the refrigerant of discharging from compression chamber, upwards flows.
In said process, from motor 2 tops reflux refrigerator oil heated by motor 2, temperature is higher, and flow out from main bearing 32 for to the refrigerator oil being lubricated between moving element, owing to having absorbed a large amount of frictional heats, temperature is also higher.The refrigerator oil that this two-part temperature is higher flows to oil sump 13 jointly downwards, and carries out heat transmission downwards.And the refrigerator oil of oil sump 13 bottoms can be by housing and outside heat exchange, thereby make the temperature of self lower.
Because density and the temperature of refrigerator oil exist certain relation: temperature is higher, density is less, therefore the refrigerator oil " floating " that oil sump 13 upper temps are higher is on the lower refrigerator oil of temperature of lower, in the time that the higher refrigerator oil temperature of temperature declines, this part refrigerator oil also sinks because density increases.In whole oil circuit dynamic circulation, the higher refrigerator oil of temperature all the time " floating " on oil sump 13 upper stratas, cryogenic freezing machine oil all the time " deposition " in oil sump 13 bottoms.Like this, just formed the refrigerating machine oil reservoir of different temperatures gradient at oil sump 13 longitudinal directions.By test, in oil sump 13, this temperature contrast of refrigerator oil is generally about 5 DEG C～10 DEG C, even larger.
Because the refrigerator oil in compressor and refrigerant mix, and there is corresponding relation in refrigerant meltage and pressure and temp in refrigerator oil: temperature is higher, and refrigerant solubility is less, and refrigerator oil dissolves viscosity to be increased, and reliability increases.In other words, temperature is lower, and the solubility of refrigerant is just larger, and the dissolving viscosity of refrigerator oil just reduces, thereby the reliability of rotary compressor 100 just reduces.Particularly, the refrigerator oil of oil sump 13 bottoms is because temperature is lower, the refrigerant of discharging from compression chamber like this can be dissolved in this part refrigerator oil largely, thereby reduce the efficiency of rotary compressor 100, and due to the dissolving reduced viscosity of refrigerator oil, be unfavorable for lubricating between each moving element of compressing mechanism, frictional loss is serious, noise is large, and has reduced the working life of rotary compressor 100.
Hence one can see that, reduce the rotary compressor 100 interior temperature of interior oil sump 13 refrigerator oil less than normal, just can reduce well and in rotary compressor 100, be dissolved in the coolant quantity in refrigerator oil, thereby the refrigerant enclosed volume in minimizing air-conditioning system, this has the combustible refrigerant of strict demand for refrigerant enclosed volume is very important.
Thereby, make bent axle oil suction place (being the lower end of bent axle) assemble the relatively refrigerator oil of high-temperature, can improve like this dissolving viscosity of the refrigerator oil being lubricated, improve lubricating status between moving element, thereby can reduce coolant leakage, improve efficiency, in addition, the reliability of rotary compressor 100 also can improve.This can realize from the distance of bent axle lower end by the bottom of reasonable control compressor.
Particularly, as shown in Figure 2, when the discharge volume V of compression chamber meets V < 13cm
3when/rev, P1/P2 meets:
0.1≤P1/P2≤1.2
When the discharge volume V of compression chamber meets 13cm
3/ rev≤V≤24cm
3when/rev, P1/P2 meets:
0.1≤P1/P2≤1.5
When the discharge volume V of compression chamber meets V > 24cm
3when/rev, P1/P2 meets:
0.1≤P1/P2≤2
Wherein, P1=H1/H2, P2=H3/H4, H1 be the center of hub portion 331 lower surfaces and lower shell body assembly (for example, the diapire of lower shell body 12 in Fig. 1 and Fig. 2) between perpendicular distance (being the perpendicular distance between the projection on the diapire of housing of the Yu Gai center, center of hub portion 331 lower surfaces), H2 be supplementary bearing assembly (for example, supplementary bearing 33 in Fig. 1 and Fig. 2) height on above-below direction, H3 be the edge of lower surface of flange part 332 and lower shell body assembly (for example, the diapire of lower shell body 12 in Fig. 1 and Fig. 2) between perpendicular distance (being the perpendicular distance between the projection on the diapire of housing of the Yu Gai edge, edge of flange part 332 lower surfaces), H4 is the height (be the thickness of cylinder 31) of cylinder 31 on above-below direction.
With reference to Fig. 2 and in conjunction with Fig. 3-Fig. 6, by adjusting diapire and the supplementary bearing 33 of housing, the size of the distance relation between cylinder 31 and supplementary bearing 33 and cylinder 31 self, draw by test, as shown in Figure 3, the refrigerant content dissolving in refrigerator oil is along with P1, the increase of P2 numerical value and increasing, in other words, work as P1, P2 hour, the refrigerant content dissolving in refrigerator oil is less, for example, in the time that the height of supplementary bearing 33 and cylinder 31 is constant, should reduce the distance H 1 between the lower surface of hub portion 331 and the diapire of housing of supplementary bearing 33 as far as possible, and perpendicular distance H3 between edge and the shell bottom wall of the lower surface of the flange part 332 of supplementary bearing 33.
Alternatively, as shown in Figures 2 and 3, lower shell body 12 comprises lug boss and joint, lug boss can be protruded and form downwards by the center of lower shell body 12, joint is connected in the periphery of lug boss, and the plane at joint place is higher than the bottom surface of lug boss, and lug boss is relative up and down with hub portion 331, now H1 is the perpendicular distance between the center of lower surface and the diapire of lug boss of hub portion 331, and H3 is the perpendicular distance between the edge of lower surface and the upper surface of joint of flange part 332.
Certainly, the utility model is not limited to this, and the bottom surface of lower shell body 12 can also be formed as plane or cambered surface.The concrete shape that is appreciated that the bottom surface of lower shell body 12 can be according to different rotary compressor 100 and adaptive change, and the utility model is not made particular determination to this.
Further, from Fig. 3, it can also be seen that, when P1, P2 hour, the amplitude that the refrigerant content dissolving in refrigerator oil increases is little, in the time that P1, P2 are increased to a certain numerical value, the amplitude that the refrigerant content dissolving in refrigerator oil increases is larger.
In enclosure interior, because the lower end surface of bent axle is conventionally roughly concordant with the lower end surface of supplementary bearing 33 (being the lower end surface of hub portion 331), distance between the lower end of bent axle and the diapire of housing is substantially equal to above-mentioned distance H 1, and this directly affects supply capability and the quality of bent axle apart from meeting.Particularly, for example, distance H 1 is too little, and due to the agitation that oiling blade 342 rotates, the refrigerator oil of the lower end of center oilhole 341 can exist foam, and the quality of fuel feeding can be affected, and fuel delivery also has larger impact.
In addition, in rotary compressor 100, because the constraint of the factor such as structure, design has determined the requirement to supply capability, therefore, also must consider the impact of these factors on supply capability.As shown in Figure 4, along with the increase of P2, the supply capability of bent axle improved before this, after tend towards stability, in the time that supply capability is greater than 2 grades, could effectively ensure to lubricate, ensure the reliability of rotary compressor 100, therefore consider from rotary compressor 100 reliability angles, the numerical value of P2 must be greater than certain certain value, and, in the case of the thickness of cylinder 31 remains unchanged, the perpendicular distance between edge and the shell bottom wall of the lower surface of the flange part 332 of supplementary bearing 33 can not be too near.Here, it should be noted that, " 1 grade " in Fig. 4, " 2 grades ", " 3 grades " can represent that the fuel delivery of bent axle is respectively 10ml/min, 20ml/min, 50ml/min, and certainly, the utility model is not limited to this, the fuel delivery grade of bent axle can also specifically be divided according to actual requirement, and the utility model is not made particular determination to this.
Because there is certain relation in the supply capability of P2 and rotary compressor 100, when supply capability hour, refrigerator oil deficiency between moving element, lubricated, sealing variation, coolant leakage between component increases, friction factor between friction pair increases, resistance increment, thereby causes the COP (Coefficient ofPerformance, the coefficient of performance) of whole rotary compressor 100 to decline.Relation between COP and the P2 of rotary compressor 100 as shown in Figure 5, as can be seen from the figure, relation between relation between COP and the P2 of rotary compressor 100 and supply capability and the P2 of bent axle is roughly the same, improved before this, after tend towards stability.
In conjunction with above-mentioned each influence factor, the numerical value of above-mentioned P1, P2 be can know and the refrigerant content in refrigerator oil, the supply capability of rotary compressor 100, the COP of rotary compressor 100 are dissolved in, system refrigerant enclosed volume, system energy efficiency etc. have close relationship, (in figure, only show trend relation) as shown in Figure 6, the relation of comprehensive each influence factor, draw best P1, P2 number range, and then can obtain best P1/P2 number range.
Thus, by for example lower shell body 12 of bottom of appropriate design housing, change the refrigerator oil content of the interior refrigerator oil different temperatures of the interior oil sump 13 of rotary compressor 100, thereby reduce the refrigerant content being dissolved in refrigerator oil, and then reduce system refrigerant enclosed volume.In addition, by appropriate design lower shell body 12, can better improve the quality of fuel feeding and refrigerator oil, reach to improve and lubricate, improve rotary compressor 100 efficiencies and reliability.
It should be noted that, when the bottom of housing is while miscellaneous part being installed at least one in the bottom of lower shell body 12 or supplementary bearing 33, for example, in the time that exhaust port is located on supplementary bearing 33, can baffler be set in the side away from cylinder 31 of supplementary bearing 33, now H3 is the perpendicular distance between baffler and the bottom of housing.Be appreciated that be arranged on the concrete setting position of the parts on lower shell body 12 and supplementary bearing 33 can be according to actual requirement specific design, correspondingly, the concrete size of H1 to H4 can specifically be determined according to above-mentioned definition, not repeat them here.
According to the utility model embodiment's rotary compressor 100, temperature in oil sump 13 is improved, thereby the refrigerant content being dissolved in the refrigerator oil of oil sump 13 reduces, in air-conditioning system, the minimizing of refrigerant enclosed volume (is under identical refrigerant enclosed volume, system energy efficiency is improved), improve the dissolving viscosity of refrigerator oil simultaneously, improved its oil quality, increased the reliability of rotary compressor 100.
According to further embodiment of the present utility model, when the discharge volume V of compression chamber meets V < 13cm
3(be every rotation one circle of piston of compressing mechanism, the refrigerant volume of discharge is less than 13cm to/rev
3) time, P1/P2 further meets:
0.2≤P1/P2≤0.8；
When the discharge volume V of compression chamber meets 13cm
3/ rev≤V≤24cm
3(be every rotation one circle of piston of compressing mechanism, the refrigerant volume of discharge is between 13cm for/rev
3to 24cm
3between) time, P1/P2 further meets:
0.2≤P1/P2≤1.0；
When the discharge volume V of compression chamber meets V > 24cm
3(be every rotation one circle of piston of compressing mechanism, the refrigerant volume of discharge is greater than 24cm to/rev
3) time, P1/P2 further meets:
0.2≤P1/P2≤1.5。
Here, it should be noted that, " the discharge volume of compression chamber " refers to that piston in the inner and the compression chamber of slide plate of compressing mechanism only supports and when slide plate is accommodated in the vane slot of cylinder 31 completely, the volume in the space limiting between the inner circle wall of compression chamber inside cylinder 31 and the periphery wall of piston.Be appreciated that direction " interior " refers to the direction towards cylinder 31 centers.Wherein, because slide plate, vane slot etc. are by those skilled in the art is known, be not described in detail here.
Thus, under discharge volume V by the compression chamber different, the value of P1/P2 is designed in a less scope, on the longitudinal direction of oil sump 13, the temperature contrast of the refrigerator oil in oil sump 13 is less, as shown in Figure 1, maximum temperature difference in oil sump 13 is 6 DEG C, in so further minimizing rotary compressor 100, be dissolved in the coolant quantity in refrigerator oil, reduce air-conditioning system refrigerant enclosed volume, also can ensure rotary compressor 100 fuel deliveries and oil supplying quality, thereby can further improve rotary compressor 100 performances, improve rotary compressor 100 reliabilities.Wherein, in Fig. 1, only show according to the temperature distribution in the oil sump 13 of one of them embodiment's of the present utility model rotary compressor 100, be appreciated that, in the time of the value difference of P1/P2 and the structure of rotary compressor 100 difference, the temperature value of the corresponding position in oil sump 13 also can be variant.
According to the utility model embodiment's rotary compressor 100100, by housing bottom reasonable in design and the each size of rotary compressor 100100, can well achieve the above object.By relevant design and verification experimental verification, rational H1, H2, H3, H4 number range are obtained, make to be dissolved in housing refrigerant in refrigerator oil few, the supply capability of rotary compressor 100100 is guaranteed, reliability is improved, and air-conditioning system refrigerant enclosed volume is few, efficiency is improved.
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 specific features, structure, material or the feature of description can be with suitable mode combination 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, amendment, replacement and modification to these embodiments, scope of the present utility model is limited by claim and equivalent thereof.
Claims (5)
1. a rotary compressor, is characterized in that, comprising:
Housing, has oil sump in described housing, and described housing comprises lower shell body assembly;
Motor, described motor is located in described housing;
Compressing mechanism, described compressing mechanism is connected with described motor, described compressing mechanism comprises main bearing, cylinder and supplementary bearing assembly, described main bearing is located at the top of described cylinder and described supplementary bearing assembly and is located at the bottom of described cylinder, between described main bearing, described supplementary bearing assembly and described cylinder, limit compression chamber, described supplementary bearing assembly comprises supplementary bearing, described supplementary bearing comprises vertically successively upwards connected hub portion and flange part, the transverse dimension of described hub portion is less than the transverse dimension of described flange part
When the discharge volume V of described compression chamber meets V < 13cm
3when/rev, P1/P2 meets:
0.1≤P1/P2≤1.2；
When the discharge volume V of described compression chamber meets 13cm
3/ rev≤V≤24cm
3when/rev, described P1/P2 meets:
0.1≤P1/P2≤1.5；
When the discharge volume V of described compression chamber meets V > 24cm
3when/rev, described P1/P2 meets:
0.1≤P1/P2≤2；
Wherein, P1=H1/H2, P2=H3/H4, described H1 is the perpendicular distance between center and the described lower shell body assembly of described hub portion lower surface, described H2 is the height of described supplementary bearing assembly on above-below direction, described H3 is the perpendicular distance between edge and the described lower shell body assembly of lower surface of described flange part, and described H4 is the height of described cylinder on above-below direction.
2. rotary compressor according to claim 1, is characterized in that, when the discharge volume V of described compression chamber meets V < 13cm
3when/rev, described P1/P2 further meets:
0.2≤P1/P2≤0.8；
When the discharge volume V of described compression chamber meets 13cm
3/ rev≤V≤24cm
3when/rev, described P1/P2 further meets:
0.2≤P1/P2≤1.0；
When the discharge volume V of described compression chamber meets V > 24cm
3when/rev, described P1/P2 further meets:
0.2≤P1/P2≤1.5。
3. rotary compressor according to claim 1 and 2, is characterized in that, the bottom surface of described lower shell body assembly is formed as cambered surface.
4. rotary compressor according to claim 1 and 2, is characterized in that, the bottom surface of described lower shell body assembly is formed as plane.
5. rotary compressor according to claim 1 and 2, is characterized in that, described lower shell body assembly has the lug boss of downward protrusion, and described lug boss is relative up and down with described hub portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479579.XU CN204003462U (en) | 2014-08-22 | 2014-08-22 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479579.XU CN204003462U (en) | 2014-08-22 | 2014-08-22 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003462U true CN204003462U (en) | 2014-12-10 |
Family
ID=52043469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420479579.XU Withdrawn - After Issue CN204003462U (en) | 2014-08-22 | 2014-08-22 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196726A (en) * | 2014-08-22 | 2014-12-10 | 广东美芝制冷设备有限公司 | Rotary compressor |
-
2014
- 2014-08-22 CN CN201420479579.XU patent/CN204003462U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196726A (en) * | 2014-08-22 | 2014-12-10 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN104196726B (en) * | 2014-08-22 | 2016-04-20 | 广东美芝制冷设备有限公司 | Rotary compressor |
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