CN209414095U - Compressor and refrigerating plant with it - Google Patents

Abstract

The utility model provides a kind of compressor and the refrigerating plant with it.Compressor includes electric machine assembly；Crankshaft；Spiral pump core, the outer surface of spiral pump core are provided with oil guide groove, and oil guide groove extends spirally setting along the axis direction of spiral pump core, and the spiral pump core of part extends in crankshaft so that partial oil guide groove is located between the inner wall of crankshaft；It is centrifuged pump block component, the centrifugation pump block assembly set of part is set on the outer surface of spiral pump core, and the centrifugation pump block component of another part is connected with electric machine assembly, and crankshaft can drive the opposite centrifugation pump block component of spiral pump core to be rotationally arranged.It efficiently avoids inside compressor causing because of oil starvation compressor to be worn the problem for causing compressor reliability low, the reliability and service life of the compressor can be effectively improved using the compressor of the structure.

Description

Compressor and refrigerating plant with it

Technical field

The utility model relates to technical field of refrigeration equipment, in particular to a kind of compressor and with its refrigeration Device.

Background technique

Piston compressor invariable frequency compressor uses centrifugal oil pump more at present, and the type oil pump is suitble under the conditions of medium, high frequency It uses, running under low frequency operating condition will appear for shortage of oil, so that compressor pumping ability is limited.And using in the prior art Centrifugal oil pump easily occur under high frequency that pump oil amount is excessive, cause refrigeration oil to enter in system, decline compressor output.It is existing There are centrifugal oil pump some need injection molding metalwork molding in technology, technique requirement, higher cost.Relative on cylinder block bearing hole Oil groove scheme is set, causes crankshaft processing technology complicated, increased costs require height, assembly difficulty etc. to ask oil pump cooperation technique Topic.

Utility model content

The main purpose of the utility model is to provide a kind of compressor and with its refrigerating plant, to solve existing skill The problem of compressor fuel delivery deficiency under low-frequency operation operating condition in art.

To achieve the goals above, one aspect according to the present utility model provides a kind of compressor, comprising: motor Component；Crankshaft；Spiral pump core, the outer surface of spiral pump core are provided with oil guide groove, axis direction spiral shell of the oil guide groove along spiral pump core Rotation is extended, and the spiral pump core of part extends in crankshaft so that partial oil guide groove is located between the inner wall of crankshaft；Centrifugation Pump block component, part centrifugation pump block assembly set be set to spiral pump core outer surface on, the centrifugation pump block component of another part with Electric machine assembly is connected, and crankshaft can drive the opposite centrifugation pump block component of spiral pump core to be rotationally arranged.

Further, mating flanges are provided in the middle part of spiral pump core, mating flanges with electric machine assembly or crankshaft for matching Connection is closed, oil guide groove is arranged along the axis direction of spiral pump core through mating flanges.

Further, logical oily channel is offered on the main shaft of crankshaft, offers outage, Oil Guide on the side wall in logical oil channel The end of slot is disposed adjacently with outage.

Further, drainback passage is offered in the middle part of spiral pump core, drainback passage is passed through along the axial direction of spiral pump core It is arranged logically, drainback passage is connected with logical oily channel.

Further, centrifugation pump block component includes: centrifugation pump block, and centrifugation pump block is tubular structure, is centrifuged the opening of pump block End cap is set on the end of spiral pump core, and the bottom for being centrifuged pump block offers the fuel feed hole being connected with the oil sump of compressor；Branch One end of support member, supporting element is connected with centrifugation pump block, and the other end for being centrifuged pump block is connected with electric machine assembly.

Further, it is centrifuged on the outer peripheral surface of the open end of pump block and is provided with sealing screw slot.

Further, fuel feed hole is multiple, and multiple fuel feed holes are arranged circumferentially spaced along centrifugation pump block.

Further, the bottom for being centrifuged pump block is provided with connection bump, offers in connection bump and is connected with supporting element Connecting hole.

Further, the outer surface for being centrifuged pump block is provided with multiple lugs, axis pair of multiple lugs about centrifugation pump block Claim ground setting, multiple lugs with supporting element for being connected.

Another aspect according to the present utility model, provides a kind of refrigerating plant, including compressor, and compressor is above-mentioned Compressor.

Using the technical solution of the utility model, the spiral pump core of part is extended to inside crankshaft, and in spiral pump core Outer surface be arranged oil guide groove, in this way setting so that the compressor be lower than 16HZ low frequency operating condition under run when, equally can Guarantee that there is compressor sufficient lubricating oil to be lubricated to its component.It efficiently avoids causing inside compressor because of oil starvation Compressor is worn the problem for causing compressor reliability low, can effectively improve the compression using the compressor of the structure The reliability and service life of machine.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows the schematic cross-sectional view of the first embodiment of compressor according to the present utility model；

Fig. 2 shows the schematic cross-sectional views of the second embodiment of compressor according to the present utility model；

Fig. 3 shows the structural schematic diagram of the first embodiment of spiral pump core according to the present utility model；

Fig. 4 shows the structural schematic diagram of the second embodiment of spiral pump core according to the present utility model；

Fig. 5 shows the structural schematic diagram of the embodiment of centrifugation pump block according to the present utility model.

Wherein, the above drawings include the following reference numerals:

1, cylinder block；2, crankshaft；21, main shaft；22, lead to oily channel；

3, motor stator；4, rotor；5, spiral pump core；51, oil guide groove；52, mating flanges；53, drainback passage；

6, it is centrifuged pump block；61, fuel feed hole；62, connection bump；63, sealing screw slot；

7, supporting element；8, shell；9, outage.

Specific embodiment

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, " Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way Term be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side The intrinsic other step or units of method, product or equipment.

Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them It states.

In conjunction with shown in Fig. 1 to Fig. 5, embodiment according to the present utility model provides a kind of compressor.

Specifically, as shown in Figure 1, the compressor includes electric machine assembly, crankshaft 2, spiral pump core 5 and centrifugation pump block component. The outer surface of spiral pump core 5 is provided with oil guide groove 51.Oil guide groove 51 extends spirally setting, portion along the axis direction of spiral pump core 5 The spiral pump core 5 divided extends in crankshaft 2 so that partial oil guide groove 51 is located between the inner wall of crankshaft 2.Partial centrifugal pump It covers assembly set to be set on the outer surface of spiral pump core 5, the centrifugation pump block component of another part is connected with electric machine assembly, crankshaft 2 The opposite centrifugation pump block component of spiral pump core 5 can be driven rotationally to be arranged.

In the present embodiment, the spiral pump core of part is extended to inside crankshaft, and be arranged in the outer surface of spiral pump core Oil guide groove when setting is so that the compressor is run under the low frequency operating condition lower than 16HZ in this way, can equally guarantee to compress equipment There is sufficient lubricating oil to be lubricated its component.It efficiently avoids causing compressor to be worn because of oil starvation inside compressor Cause the problem that compressor reliability is low, using the compressor of the structure can effectively improve the compressor reliability and Service life.

Wherein, the middle part of spiral pump core 5 is provided with mating flanges 52, and mating flanges 52 are used for and electric machine assembly or crankshaft 2 It is cooperatively connected, oil guide groove 51 is arranged along the axis direction of spiral pump core 5 through mating flanges 52.Setting can be mentioned effectively in this way The high connection reliability of spiral pump core 5.

Logical oily channel 22 is offered on the main shaft 21 of crankshaft 2, offers outage 9, Oil Guide on the side wall in logical oil channel 22 The end of slot 51 is disposed adjacently with outage 9.Setting allows direct from the oil body in the oil guide groove of centrifugal pump in this way It is expelled to crankshaft outer surface by outage, realizes the lubrication to bearing hole and other component.

As shown in Figure 2 and Figure 4, the middle part of spiral pump core 5 offers drainback passage 53, and drainback passage 53 is along spiral pump core 5 Axial direction perforation ground setting, drainback passage 53 is connected with logical oil channel 22.Setting enables to be located at cylinder block 1 one in this way The extra oil body of side can drain into drainback passage 53 shell 8 for being back to compressor again by the logical oily channel on crankshaft In oil sump, the utilization rate of oil body is improved.

As shown in Figure 1, Figure 2 and shown in Fig. 5, centrifugation pump block component includes centrifugation pump block 6 and supporting element 7.Centrifugation pump block 6 is tubular The open end of structure, centrifugation pump block 6 is sheathed on the end of spiral pump core 5, and the bottom of centrifugation pump block 6 offers and compressor The fuel feed hole 61 that oil sump is connected.One end of supporting element 7 is connected with centrifugation pump block 6, is centrifuged the other end and motor group of pump block 6 Part is connected.Wherein, supporting element 7 can be elastic wire, and one end of supporting element is connected with centrifugation pump block 6, supporting element it is another One end is connected with the insulating support of the motor stator 3 of electric machine assembly.

It is centrifuged on the outer peripheral surface of the open end of pump block 6 and is provided with sealing screw slot 63.Setting is so that work as some in this way Oil body sealing oil reservoir is formed when flowing at this, improve the reliability of the compressor.

Further, fuel feed hole 61 is multiple, and multiple fuel feed holes 61 are arranged circumferentially spaced along centrifugation pump block 6.In this way The oil inlet quantity that can be improved centrifugal pump assemblages is set.

In order to improve the installation reliability of centrifugation pump block 6, the bottom of centrifugation pump block 6 is provided with connection bump 62, connects The connecting hole being connected with supporting element 7 is offered in protrusion 62.

Certainly, in another embodiment of the application, the outer surface of centrifugation pump block 6 can be provided with multiple lugs, Multiple lugs are arranged about the axisymmetrical for being centrifuged pump block 6, and multiple lugs with supporting element 7 for being connected.Setting is same in this way Sample can play the role of fixed centrifugation pump block.

Compressor in above-described embodiment can be also used for technical field of refrigeration equipment, i.e., according to the present utility model another Aspect, provides a kind of refrigerating plant, including compressor, and compressor is the compressor in above-described embodiment.

Further, using the plasticator of the structure, it is able to solve pump oil amount problems of too under high frequency, low frequency fuel delivery is not The problem of foot, pump block are equipped with external thread section, and the refrigeration oil that can reduce pump core and pump block leaks, improve existing oil pump complex process, The disadvantages of at high cost.Using the compressor of the structure, when can also improve the operation of compressor high frequency, pump oil amount is excessive easily to being The problem of system, refrigerating capacity cause adverse effect, pump block are arranged thread segment, speed of the refrigeration oil from clearance leakage are effectively reduced, Guarantee the reliability that oils when low-frequency operation.

(interference, glue etc.) is matched using pump core and crankshaft straight tipping, which can be used one-pass molding, has and is processed into This is lower, and technique requires low, easy assembly.

In the present embodiment, spiral pump core is matched with crankshaft straight tipping, and helicla flute, helicla flute and refrigeration oil is arranged in spiral pump core Outage distance is close, and refrigeration oil is easier to realize pump oil in low frequency.By the interaction of spiral pump core and pump block, Compressor and freeze oil is set to be transported to position (piston and cylinder holes, crankshaft and the bearing that compressor needs to lubricate by oil circuit from oil sump The positions such as hole, connecting rod and crankshaft).Refrigeration oil by fueller, by spiral pump block and the effect of spiral pump core by oil circuit into Enter crankshaft lower end, by rotary motion centrifugal action, refrigeration oil is sent via spiral oil circuit the position lubricated to needs.Wherein, Spiral pump block outer circle is equipped with helicla flute, and the gap between spiral pump block and spiral pump core, rotor is effectively prevent to lead to asking for leakage Topic.Settable drainback passage in spiral pump core, when pump oil amount can be made excessive, refrigeration oil can be returned in oil sump by drainback passage, Spiral pump core and spiral pump block are coaxial assembly, and the fit clearance of pump core and pump block internal diameter is less than between pump block outer diameter and rotor Gap avoids contact of the pump block with rotor.Spiral pump core is moved with moving component (crankshaft, rotor), by this fueller, It is acted on by pump block and pump core, the cross section of the spiral oil guide slot of spiral pump core is in rectangle, trapezoidal or triangle etc., in helicoidal pump Under the centrifugal action of core, enter crankshaft interior lower end by spiral oil circuit, from the outage on crankshaft, then through crankshaft spiral oil circuit Refrigeration oil is sent to the position (piston and cylinder holes, the positions such as crankshaft and bearing hole, connecting rod and crankshaft) for needing to lubricate and realizes fuel feeding.

The settable auxiliary section of pump core outer circle, the auxiliary section can be mating flanges, and auxiliary section can be with crankshaft or rotor 4 It is interference fitted, is rotated together with rotor.This mode spiral pump core can single injection-molded, it is quick and easy for installation.

Pump block outer circle is equipped with sealing screw slot, and the gap between spiral pump block and spiral pump core, rotor is effectively prevent to cause Leakage.Helicla flute is set on pump block, and pump block outer wall helicla flute is to prevent refrigeration oil clearance leakage from there, slows down leakage speed Degree, spiral pump block inner wall and pump core interact, and refrigeration oil is oiled by centrifugal force in finite volume, is easier in realization Oil.When can make clearance leakage of the refrigeration oil between spiral pump core and spiral pump block, rotor, flow resistance is provided, makes to freeze The leakage of oil slows down, so that also there is enough refrigeration oils to needing in low frequency, freezing, lubricant housings acted on.

Pump block bottom is equipped with fuel feed hole, and it is entrance of the refrigeration oil in fueller that oil inlet is connected with oil sump.Pump block bottom Equipped with fixing piece mounting hole, motor skeleton or motor can be fixed on by fixing piece (such as steel wire, connector) spiral pump block On stator.

Spiral pump core is coaxial assembly with spiral pump block, but spiral pump core and the fit clearance of spiral pump block internal diameter are less than spiral shell The gap for revolving pump block outer diameter and rotor, avoids contact of the spiral pump block with rotor, and pump block outer wall is caused to wear.Spiral pump core and spiral shell The rotation preferential the selection of material of pump block is plastics, avoids being that metal is also easy to produce iron filings, causes unrepairable to destroy compressor components.

Drainback passage is set in spiral pump core, when pump oil amount can be made excessive, refrigeration oil can be returned in oil sump by oil return hole, In the operation of compressor high frequency, pump oil amount is excessive easily to cause adverse effect to system, refrigerating capacity, and setting drainback passage to have Realize the control of fuel delivery in effect ground.Oil guide groove and the screw pitch of sealing screw slot can be adjusted according to the actual situation.Spiral pump core It is interference fitted with crankshaft.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description Apply example.Furthermore, it is understood that is advocated is knot when describing a specific features, structure or feature in conjunction with any embodiment Other embodiments are closed to realize that this feature, structure or feature are also fallen in the scope of the utility model.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment Point, reference can be made to the related descriptions of other embodiments.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of compressor characterized by comprising

Electric machine assembly；

Crankshaft (2)；

The outer surface of spiral pump core (5), the spiral pump core (5) is provided with oil guide groove (51), and the oil guide groove (51) is along described The axis direction of spiral pump core (5) extends spirally setting, the spiral pump core (5) of part extend in the crankshaft (2) with It is located at the oil guide groove (51) of part between the inner wall of the crankshaft (2)；

It is centrifuged pump block component, the centrifugation pump block assembly set of part is set on the outer surface of the spiral pump core (5), another portion The centrifugation pump block component divided is connected with electric machine assembly, and the crankshaft (2) can drive the spiral pump core (5) relatively described Centrifugation pump block component is rotationally arranged.

2. compressor according to claim 1, which is characterized in that it is convex to be provided with cooperation in the middle part of the spiral pump core (5) Edge (52), the mating flanges (52) are used to be cooperatively connected with the electric machine assembly or the crankshaft (2), the oil guide groove (51) Axis direction along the spiral pump core (5) is arranged through the mating flanges (52).

3. compressor according to claim 1, which is characterized in that offer logical oil on the main shaft (21) of the crankshaft (2) Channel (22) offers outage (9) on the side wall of the logical oily channel (22), the end of the oil guide groove (51) and the row Oilhole (9) is disposed adjacently.

4. compressor according to claim 3, which is characterized in that it is logical to offer oil return in the middle part of the spiral pump core (5) Road (53), axial direction perforation ground setting of the drainback passage (53) along the spiral pump core (5), the drainback passage (53) It is connected with the logical oily channel (22).

5. compressor according to claim 1, which is characterized in that the centrifugation pump block component includes:

It is centrifuged pump block (6), the centrifugation pump block (6) is tubular structure, and the open end of centrifugation pump block (6) is sheathed on the spiral shell On the end for revolving pump core (5), the bottom of centrifugation pump block (6) offers the fuel feed hole being connected with the oil sump of compressor (61)；

Supporting element (7), one end of the supporting element (7) are connected with the centrifugation pump block (6), described to be centrifuged the another of pump block (6) One end is connected with the electric machine assembly.

6. compressor according to claim 5, which is characterized in that on the outer peripheral surface of the open end of centrifugation pump block (6) It is provided with sealing screw slot (63).

7. compressor according to claim 5, which is characterized in that the fuel feed hole (61) is multiple, multiple oil inlets Hole (61) is arranged circumferentially spaced along centrifugation pump block (6).

8. compressor according to claim 5, which is characterized in that it is convex that the bottom of centrifugation pump block (6) is provided with connection It rises (62), offers the connecting hole being connected with the supporting element (7) on the connection bump (62).

9. compressor according to claim 5, which is characterized in that the outer surface of centrifugation pump block (6) is provided with multiple Lug, multiple lugs are arranged about the axisymmetrical for being centrifuged pump block (6), and multiple lugs are used for and the branch Support member (7) is connected.

10. a kind of refrigerating plant, including compressor, which is characterized in that the compressor is any one of claims 1 to 9 institute The compressor stated.