CN203962319U - A kind of refrigeration compressor piston driving mechanism - Google Patents
A kind of refrigeration compressor piston driving mechanism Download PDFInfo
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- CN203962319U CN203962319U CN201420415157.6U CN201420415157U CN203962319U CN 203962319 U CN203962319 U CN 203962319U CN 201420415157 U CN201420415157 U CN 201420415157U CN 203962319 U CN203962319 U CN 203962319U
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- crankshaft
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Abstract
A refrigeration compressor piston driving mechanism, belongs to refrigeration system component device.Existing crankshaft of cooler compressor processing cost is high, when running up, noise is large, friction power loss is large.The utility model comprises drive motor, crankshaft & connecting, crankshaft & connecting comprise bent axle and be connected in crankshaft crank and compressor piston between connecting rod, on compressor cylinder base, be provided with center line perpendicular to the crankshaft hole of piston cavity center line, bent axle is installed in crankshaft hole, crankshaft hole inner chamber two ends are respectively arranged with bearing assembly department, by install the radial force bearing of a bearing radial force and the composite bearing radial force of a while bearing radial force axial force at bearing assembly department, bent axle and crankshaft hole surface Machining schedule requirement, energy consumption of compressor and noise have been reduced; On one end, outer ring end face of composite bearing radial force bearing portion, be provided with raceway as the thrust seat ring of axial force bearing portion, thrust blowout patche forms and supports the crank portion of bent axle.
Description
Technical field
The utility model belongs to refrigeration system component device field, especially relevant with a kind of refrigeration compressor piston driving mechanism.
Background technique
Existing hermetically sealed compressor mostly adopts reciprocating piston type mechanism, piston is driven by bent axle-linkage mechanism by motor, it mainly comprises cylinder block, bent axle, piston and connecting rod, on cylinder block, be provided with the crankshaft hole of installing bent axle, it is vertical that crankshaft hole center line becomes, piston cavity center line is vertical with crankshaft hole center line, the sliding bearing effect that has been slidably matched after fine finishing of bent axle periphery and crankshaft hole internal surface, connecting rod connects crankshaft and piston, rotor is directly sleeved on driving crank rotation on bent axle, and promotes piston reciprocates by connecting rod.Bent axle arranges axial center hole as lubrication delivery passage, on bent axle periphery, helical groove is set, and left-handed groove is communicated with lubrication delivery passage and carries lubricant oil with center hole, the sliding friction of bent axle periphery and crankshaft hole internal surface is lubricated.The crank boss of the weight of bent axle and rotor by bent axle supported by the upper aperture end face of crankshaft hole, the upper aperture end face of crank raised head face and crankshaft hole is the slip through oil lubrication equally, and lubricant oil is carried by the helical groove on aforementioned bent axle periphery.On such compressor crank shaft periphery, crank raised head face, crankshaft hole internal surface, crankshaft hole, aperture end face requirement on machining accuracy is very high, and the lubrication delivery passage difficulty of processing on cranking arm is larger, causes processing cost relatively high; When speed of crankshaft is higher, the friction between bent axle and cylinder block can produce higher noise, and its friction power loss is also larger.
Model utility content
The purpose of this utility model is intended to overcome the defect that existing crankshaft of cooler compressor processing cost is high, noise is large when running up, friction power loss is large, provides that a kind of Crankshaft Machining is simple, noise is little and can effectively reduce the refrigeration compressor piston driving mechanism of energy consumption.
For this reason, the utility model is by the following technical solutions: a kind of refrigeration compressor piston driving mechanism, comprise drive motor and crankshaft & connecting, crankshaft & connecting comprises bent axle and is connected in the crank portion of bent axle and the connecting rod between compressor piston, on compressor cylinder base, be provided with center line perpendicular to the crankshaft hole of piston cavity center line, bent axle is installed in crankshaft hole, it is characterized in that, piston drive mechanism also comprises the radial force bearing of a bearing radial force and the composite bearing of a while bearing radial force axial force, described crankshaft hole inner chamber two ends are respectively arranged with bearing assembly department, described radial force bearing is installed between bent axle and crankshaft hole bottom end bearing assembly department, described composite bearing is installed between described bent axle and crankshaft hole upper end bearing assembly department, raceway on described composite bearing outer ring endoporus and inner ring, rolling element, retainer form the radial force bearing portion of bearing radial force, on the end face of one end, composite bearing outer ring, be provided with raceway as thrust seat ring, form with thrust blowout patche, rolling element, retainer the axial force bearing portion that bears axial force, thrust blowout patche is coated at bent axle and the crank portion of bent axle is formed and supported.
As to technique scheme supplement and perfect, the utility model also comprises following technical characteristics.
The end, one end that described composite bearing outer ring arranges raceway arranges the flange that turns up being connected as a single entity, between outer ring periphery and cycle surface, form end face shoulder, and increase cycle surface area and be used for arranging raceway, the bearing assembly department of described crankshaft hole upper end comprises and is arranged at outwards recessed annular groove and be arranged on crankshaft hole orifice end over glaze to recessed annular groove of footpath, crankshaft hole hole wall upper end, two annular grooves are interconnected, described composite bearing inner ring fixed cover is loaded on bent axle, cycle surface shoulder is pressed against described annular groove bottom surface, to outer ring, can play axially support effect, better support the axial force that bent axle is subject to.
Further, described composite bearing also comprises a case, case is provided with the cylinder shape groove inner chamber being formed by a sheet member flange, bottom portion of groove arranges through hole, the turn-up portion of case is fixedly connected with the outer ring of composite bearing, and the axial force bearing portion of composite bearing is in the groove inner chamber of case, and crankshaft crooked shank is supported by thrust blowout patche by the through hole of bottom portion of groove, the thrust blowout patche axial position of composite bearing is limited, facilitates the installation of composite bearing in crankshaft hole.
The bearing of described bearing radial force is deep groove ball bearing or needle bearing.
Described needle bearing is needle bearing or the needle roller bearing without inner ring that has inner ring.
The utility model by the bearing of bearing radial force is set between bent axle and crankshaft hole and bear radially simultaneously, the composite bearing of axial force, make the sliding friction between bent axle and crankshaft hole transfer rolling friction to, can reach following beneficial effect: 1, significantly reduce energy consumption, take refrigerator refrigeration compressor as example, power consumption can reduce more than 5%, every refrigerator year saving power reach 20 about degree, from the use amount of refrigerator, calculate, the electric energy of saving is appreciable; 2, can reduce difficulty of processing and surface Machining required precision, except two bearing assembly departments of running in bearings, without again fine finishing being carried out in bent axle surface and crankshaft hole internal surface, reduce processing cost; 3, reduce compressor noise, by test, adopt compressor noise of the present utility model can reduce by 2～3 decibels.
Accompanying drawing explanation
Fig. 1 is use structure graph of the present utility model.
Fig. 2 is sectional view of the present utility model.
Fig. 3 is the structural drawing of the utility model composite bearing mode of execution one.
Fig. 4 is the structural drawing of the utility model composite bearing mode of execution two.
Fig. 5 is the structural drawing of the utility model needle bearing mode of execution one.
Fig. 6 is the structural drawing of the utility model needle bearing mode of execution two.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As shown in FIG. 1 to 3, the utility model comprises drive motor, crankshaft & connecting, the radial force bearing 6 of one bearing radial force and one is the composite bearing 5 of bearing radial force axial force simultaneously, crankshaft & connecting comprise bent axle 1 and be connected in crankshaft crank and compressor piston 3 between connecting rod 4, on compressor cylinder base 2, be provided with center line perpendicular to the crankshaft hole of piston cavity center line, bent axle 1 is installed in crankshaft hole, the upper and lower two ends of crankshaft hole inner chamber hole wall all arrange annular groove as bearing assembly department, radial force bearing 6 is needle bearing, the annular groove of crankshaft hole lower end is fixed in needle bearing outer ring, the bearing assembly department of described crankshaft hole upper end comprises and is arranged at outwards recessed annular groove and be arranged on crankshaft hole orifice end over glaze to recessed annular groove of footpath, crankshaft hole hole wall upper end, two annular grooves are interconnected, raceway on the endoporus of the outer ring 7 of described composite bearing 5 and inner ring 8, rolling element, retainer forms the radial force bearing portion of bearing radial force, on one end end face of composite bearing outer ring 7, be provided with raceway as thrust seat ring, with thrust blowout patche 9, rolling element, retainer forms the axial force bearing portion that bears axial force, the crank portion of 9 pairs of bent axles of thrust blowout patche forms and supports, the end, one end that the outer ring of composite bearing 5 arranges raceway arranges the flange that turns up being connected as a single entity, between outer ring periphery and cycle surface, form end face shoulder, and increase cycle surface area raceway is conveniently set, composite bearing cycle surface shoulder is pressed against described annular groove bottom surface, to outer ring, can play axially support effect, better support the axial force that bent axle is subject to.
In figure technique scheme, the bearing of bearing radial force can also be deep groove ball bearing.
As shown in Figure 4, in technique scheme, composite bearing can also comprise a case 10, case is provided with the cylinder shape groove inner chamber being formed by a sheet member flange, bottom portion of groove arranges through hole, the turn-up portion of case is fixedly connected with the outer ring of composite bearing 7, the axial force bearing portion of composite bearing is in the groove inner chamber of case, crankshaft crooked shank is supported by thrust blowout patche by the through hole of bottom portion of groove, the thrust blowout patche axial position of composite bearing is limited, facilitates the installation of composite bearing in crankshaft hole.
As shown in Figure 5, Figure 6, described needle bearing is needle bearing or the needle roller bearing without inner ring that has inner ring.
Claims (5)
1. a refrigeration compressor piston driving mechanism, comprise drive motor and crankshaft & connecting, crankshaft & connecting comprise bent axle and be connected in crankshaft crank and compressor piston between connecting rod, on compressor cylinder base, be provided with center line perpendicular to the crankshaft hole of piston cavity center line, bent axle is installed in crankshaft hole, it is characterized in that: described piston drive mechanism also comprises the radial force bearing of a bearing radial force and the composite bearing of a while bearing radial force axial force, described crankshaft hole inner chamber two ends are respectively arranged with bearing assembly department, described radial force bearing is installed between bent axle and crankshaft hole bottom end bearing assembly department, described composite bearing is installed between described bent axle and crankshaft hole upper end bearing assembly department, raceway on described composite bearing outer ring endoporus and inner ring, rolling element, retainer form the radial force bearing portion of bearing radial force, on the end face of one end, composite bearing outer ring, be provided with raceway as thrust seat ring, form with thrust blowout patche, rolling element, retainer the axial force bearing portion that bears axial force, thrust blowout patche is coated at bent axle and the crank portion of bent axle is formed and supported.
2. a kind of refrigeration compressor piston driving mechanism according to claim 1, it is characterized in that: the end, one end that described composite bearing outer ring arranges raceway arranges the flange that turns up being connected as a single entity, between outer ring periphery and cycle surface, form end face shoulder, and increase cycle surface area and be used for arranging raceway, the bearing assembly department of described crankshaft hole upper end comprises and is arranged at outwards recessed annular groove and be arranged on crankshaft hole orifice end over glaze to recessed annular groove of footpath, crankshaft hole hole wall upper end, two annular grooves are interconnected, described composite bearing inner ring fixed cover is loaded on bent axle, cycle surface shoulder is pressed against described annular groove bottom surface.
3. a kind of refrigeration compressor piston driving mechanism according to claim 2, it is characterized in that: described composite bearing also comprises a case, case is provided with the cylinder shape groove inner chamber being formed by a sheet member flange, bottom portion of groove arranges through hole, the turn-up portion of case is fixedly connected with the outer ring of composite bearing, the axial force bearing portion of composite bearing is in the groove inner chamber of case, and crankshaft crooked shank is supported by thrust blowout patche by the through hole of bottom portion of groove.
4. according to a kind of refrigeration compressor piston driving mechanism described in claim 1,2 or 3, it is characterized in that: the bearing of described bearing radial force is deep groove ball bearing or needle bearing.
5. a kind of refrigeration compressor piston driving mechanism according to claim 4, is characterized in that: described needle bearing is needle bearing or the needle roller bearing without inner ring that has inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420415157.6U CN203962319U (en) | 2014-07-25 | 2014-07-25 | A kind of refrigeration compressor piston driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420415157.6U CN203962319U (en) | 2014-07-25 | 2014-07-25 | A kind of refrigeration compressor piston driving mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN203962319U true CN203962319U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420415157.6U Active CN203962319U (en) | 2014-07-25 | 2014-07-25 | A kind of refrigeration compressor piston driving mechanism |
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| CN (1) | CN203962319U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131960A (en) * | 2014-07-25 | 2014-11-05 | 浙江美亚特精密机械有限公司 | Piston driving mechanism for refrigeration compressor |
| CN107131109A (en) * | 2016-02-29 | 2017-09-05 | 日立空调·家用电器株式会社 | Compressor and the refrigerator for possessing the compressor |
| CN112555274A (en) * | 2020-12-03 | 2021-03-26 | 青岛万宝压缩机有限公司 | External bearing device, compressor and method |
-
2014
- 2014-07-25 CN CN201420415157.6U patent/CN203962319U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131960A (en) * | 2014-07-25 | 2014-11-05 | 浙江美亚特精密机械有限公司 | Piston driving mechanism for refrigeration compressor |
| CN107131109A (en) * | 2016-02-29 | 2017-09-05 | 日立空调·家用电器株式会社 | Compressor and the refrigerator for possessing the compressor |
| CN112555274A (en) * | 2020-12-03 | 2021-03-26 | 青岛万宝压缩机有限公司 | External bearing device, compressor and method |
| CN112555274B (en) * | 2020-12-03 | 2022-08-16 | 青岛万宝压缩机有限公司 | External bearing device, compressor and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |