CN209228680U - Refrigerant lubrication type compressor and air conditioner - Google Patents

Abstract

The utility model relates to a compressor and air conditioner of lubricated formula of refrigerant, the compressor includes: a rotating shaft (1); a bearing (2) for supporting the rotating shaft (1); and the two annular components (5) are sleeved on the rotating shaft (1) and are respectively positioned at two ends of the bearing (2) along the axial direction of the bearing, and flow channels for conveying fluid for cooling and/or lubricating to the bearing (2) are arranged on the two annular components (5). By applying the technical scheme, the compressor comprises two annular parts which are respectively positioned at two sides of the bearing, and the annular parts are provided with flow channels for conveying fluid for cooling and/or lubricating to the bearing, so that the problem of short service life of the bearing in the prior art is solved.

Description

The compressor and air conditioner of refrigerant lubricated type

Technical field

The utility model relates to refrigeration technology fields, in particular to the compressor and air-conditioning of a kind of refrigerant lubricated type Device.

Background technique

Bearing is the element of key position in centrifugal refigerating compressor, the effect of bearing be subject to rotor weight and its Rotation when work.Due to there is friction phenomenon in bearing for a long time, lubrication has a very important significance bearing, in bearing Lubricant can not only reduce frictional resistance, mitigate abrasion, there are also radiating and cooling, reduce contact stress, absorb vibration, prevent The effects of corrosion.

Common bearing arrangement has oil-lubricated bearing, magnetic suspension bearing, gas suspension bearing etc..Oil-lubricated bearing is at low cost, Structure is simple, high reliablity, therefore is widely used, but during compressor operation, lubricating oil can be leaked to refrigeration It is mixed in system with refrigerant, influences the heat exchange property of refrigerant, it is therefore desirable to additional device be installed, refrigerant is purified, and is right Lubricating oil is recycled.The gentle suspension bearing of magnetic suspension bearing belongs to oilless bearing, and bearing working environment is good, but cost High, control system complexity, when unit powers off suddenly, rotor is serious to bearing wear, influences bearing service life, and gas is outstanding Floating bearing technology is still immature, and practical application is less.

Utility model content

The utility model is intended to provide a kind of compressor and air conditioner, to improve the use of bearing existing in the prior art Service life lower problem.

According to the one aspect of the utility model embodiment, the utility model provides a kind of compressor, and compressor includes:

Shaft；

Bearing is used to support shaft；And

Two endless members, are set in shaft, and are located at the both ends along its axial direction of bearing, two endless members On be equipped with for bearing convey cooling and/or lubrication fluid runner.

Optionally, compressor further includes the refrigerant flow for the refrigerant that circulates, and runner is connected to the refrigerant flow of compressor, For guiding refrigerant into bearing.

Optionally, after refrigerant flow includes for the first refrigerant flow of the refrigerant to be compressed that circulates and for compression of circulating Refrigerant the second refrigerant flow, the runner on endless member be connected to the first refrigerant flow or endless member on runner with The connection of second refrigerant flow.

Optionally, runner includes:

First duct, the center radially towards endless member along shaft extend；And

Second duct is extended to the end face towards bearing of endless member by the first duct.

Optionally, the second duct is along the direction close to bearing gradually to axes of rotation skew.

Optionally, multiple runners along endless member circumferentially.

Optionally, be provided with cavity on the outer peripheral surface of endless member, cavity along endless member circumferentially extending, and with it is multiple Runner connection.

Optionally, cavity is formed between the lower part and endless member of shaft.

Optionally, the outlet end of runner is towards the gap between the inner ring and outer ring of bearing.

According to the another aspect of the application, a kind of air conditioner is additionally provided, air conditioner includes above-mentioned compressor.

Using the technical solution of the application, compressor includes two endless members for being located at the two sides of bearing, cyclic annular Component is equipped with the runner of the fluid for conveying cooling and/or lubrication to institute's bearing, improves existing in the prior art The short problem of the service life of bearing.

By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other Feature and its advantage will become apparent.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 shows the mounting structure for rotating shaft schematic diagram of the compressor of the embodiments of the present invention；And

Fig. 2 shows the structural representations of the endless member of the mounting structure for rotating shaft of the compressor of the embodiments of the present invention Figure.

In figure:

1, shaft；2, bearing；3, endless member；4, bearing spider；41, third duct；5, endless member；51, cavity； 52, the first duct；53, the second duct；54, recessed portion.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.

Referring to figs. 1 and 2, the compressor of the present embodiment include shaft 1, be used to support shaft 1 bearing 2 and point Not Wei Yu bearing 2 two sides two endless members 5, endless member 5 is set in shaft, is equipped on two endless members 5 For conveying the runner of the fluid of cooling and/or lubrication to bearing 2.

There is gap between shaft 1 and endless member 5.Shaft 1 and endless member 5 are fixing elements, therefore liquid spraying ring Internal diameter need to be larger than main shaft outer diameter, and in general unilateral gap need to avoid missing due to accumulative at 1 to 2 millimeter or 2 millimeters or more Difference causes liquid spraying ring and main shaft when compressor operating to be interfered.

The quantity of 5 upper runner of endless member should not be excessive or very few, and the quantity of runner preferably 4 to 6 are advisable, runner The lubricant effect of the very little bearing 2 of quantity is bad, causes processing cost to waste too much.

Runner includes the first duct 52 extended along shaft 1 radially towards the center of endless member 5 and by the first duct 52 Extend to the second duct 53 of the end face towards bearing 2 of endless member 5.

Optionally, the second duct 53 tilts gradually downward along the direction close to bearing 2.So that the first duct 52 and the second hole Angle between road 53 is obtuse angle, and the boundary transition position between the first duct 52 and the second duct 53 is more gentle, is conducive to subtract The disorder degree of little airflow.

Second duct 53 can be perpendicular to the end face of endless member 5, also tiltable certain angle, but need to guarantee the liquid sprayed It can smoothly enter into bearing 2.

When the first duct 52 and the second duct 53 correspondingly, the second duct 53 is connected to corresponding first duct 52. The circulation area in the second duct 53 is conducive to the fluid for improving the ejection of the second duct 53 less than the circulation area in the first duct 52 Speed.

In some embodiments, the cross-sectional area sum in multiple second ducts 53 on endless member 5 is less than multiple first The sum of the area of cross section in duct 52.

Multiple runners along endless member 5 circumferentially.Cavity 51, cavity 51 are provided on the outer peripheral surface of endless member 5 It is connected to along the circumferentially extending of endless member 5, and with multiple runners.

Compressor further includes bearing spider 4, and mounting hole is provided on bearing spider, and bearing 2 and endless member 5 are set in In mounting hole.Compressor further includes the bearing spider fastener 3 for being fixed on bearing 2 and endless member 5 in mounting hole.

Bearing spider 4 is equipped with the third duct 41 being connected to cavity 51, and third duct 41 is used to convey to cavity 51 and use In cooling and/or lubrication bearing fluid.Cavity 51 is used to cache the fluid of part, to guarantee the runner energy on endless member 5 Enough constantly to 2 trandfer fluid of bearing.

The area of the cross section in the third duct 41 of bearing spider 4 is greater than multiple first ducts 52 on endless member 5 The sum of area of cross section.So that third duct 41 can have sufficient fluid conveying into multiple first ducts 52.

The width in third duct 41 be less than cavity 51 width, in order to third duct 41 outlet end completely with cavity 51 Connection.

As shown in Fig. 2, the lower part of the inner ring of endless member 5 is provided with recessed portion 54, so as in the lower part of shaft 1 and ring-type The cavity for collecting fluid is formed between component 5.Preferably, the fluid for being discharged in cavity is provided on endless member 5 The 4th duct.

In the present embodiment, compressor further includes the refrigerant flow for the refrigerant that circulates, the refrigerant flow of runner and compressor Connection, guides refrigerant into bearing.

Refrigerant flow includes for the first refrigerant flow of the refrigerant to be compressed that circulates and for the compressed refrigerant that circulates The second refrigerant flow, the runner on endless member 5 be connected to the first refrigerant flow or endless member 5 on runner and second Refrigerant flow connection.

Refrigerant is delivered to bearing 2 by the compressor of the present embodiment, to utilize refrigerant as bearing lubrication, cooling.Refrigerant glues Degree is less than lubricating oil viscosity, and refrigerant lubricates bearing with coefficient of friction is low, vibration and noise reducing performance is good, the more difficult formation of lubricating liquid film And than the features such as relatively thin, bearing capacity is smaller.Under some special operation conditions such as low speed, heavy duty, starting, shutdown, bearing may In severe lubricating status, serious friction, abrasion and vibration noise can be generated.Liquid film should be comprehensively considered when practical application to hold Loading capability, actual working conditions, to guarantee to be safely operated.

The thickness of liquid film increases with the increase of bearing/speed of mainshaft, and the raising of revolving speed is conducive to the shape of lubricating liquid film At.

Bearing can be sliding bearing, be also possible to rolling bearing.Since refrigerant viscosity is smaller, it is preferable to use the axis of rolling It holds.The material of bearing 2 need to meet that bearing is corrosion-resistant, the requirement of the characteristics such as wear-resistant.

When bearing 2 is rolling bearing, in order to guarantee that lubricant can enter the bearing of high-speed rotation, the outlet in the second duct 53 Answer the gap between alignment bearings inner ring and outer ring in end；When bearing is sliding bearing, nozzle should be aligned main shaft and bearing inner race it Between gap.

Bearing 2 can be two bearings, be also possible to an independent bearing when axis on each bearing support position of compressor When to hold 2 be an independent bearing, endless member 5 only can be set in side.

The refrigerant lubrication bearing for present embodiments providing a kind of both sides hydrojet, after refrigerant enters cavity 51, by runner from To in intermediate injection to bearing 2, this spray regime has certain control to the flow range of refrigerant on both sides, can make in bearing Refrigerant distribution is more uniform, and reduces the splashing of refrigerant, provides enough lubricating fluids for bearing, refrigerant during bearing operation More heats can be taken away, last refrigerant is discharged from liquid spraying ring bottom.Refrigerant from both sides in intermediate injection to bearing, this injection Mode has certain control to the flow range of refrigerant, the refrigerant in bearing can be made to be distributed more uniform, and reduce flying for refrigerant It splashes, more heats can be taken away during bearing operation.

According to the another aspect of the application, a kind of air conditioner is additionally provided, which includes above-mentioned compressor.

The above is only the exemplary embodiments of the utility model, are not intended to limit the utility model, all practical new at this Within the spirit and principle of type, any modification, equivalent replacement, improvement and so on should be included in the protection of the utility model Within the scope of.

Claims (10)

1. a kind of compressor characterized by comprising

Shaft (1)；

Bearing (2) is used to support the shaft (1)；

Two endless members (5), are set on the shaft (1), and be located at the bearing (2) along its axial two It holds, the stream of the fluid for conveying cooling and/or lubrication to the bearing (2) is equipped on two endless members (5) Road.

2. compressor according to claim 1, which is characterized in that the compressor further includes the refrigerant for the refrigerant that circulates Flow path, the runner are connected to the refrigerant flow of the compressor, for guiding refrigerant into the bearing.

3. compressor according to claim 2, which is characterized in that the refrigerant flow includes to be compressed cold for circulating The first refrigerant flow of matchmaker and the second refrigerant flow for the compressed refrigerant that circulates, the runner on the endless member (5) Be connected to first refrigerant flow or the endless member (5) on runner be connected to second refrigerant flow.

4. compressor according to claim 1, which is characterized in that the runner includes:

First duct (52), the center radially towards endless member (5) along the shaft (1) extend；And

Second duct (53) is extended to the end towards the bearing (2) of the endless member (5) by first duct (52) Face.

5. compressor according to claim 4, which is characterized in that second duct (53) is along close to the bearing (2) Direction gradually to shaft (1) tilt.

6. compressor according to claim 1, which is characterized in that week of multiple runners along the endless member (5) To arrangement.

7. compressor according to claim 6, which is characterized in that be provided on the outer peripheral surface of the endless member (5) recessed Chamber (51), the cavity (51) and are connected to along the circumferentially extending of the endless member (5) with multiple runners.

8. compressor according to claim 1, which is characterized in that the lower part and the endless member (5) of the shaft (1) Between form cavity.

9. compressor according to claim 1, which is characterized in that inner ring of the outlet end of the runner towards the bearing Gap between outer ring.

10. a kind of air conditioner, which is characterized in that including compressor described in any one of claims 1 to 9.