CN202520555U - Rotary machine - Google Patents
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- CN202520555U CN202520555U CN 201120441313 CN201120441313U CN202520555U CN 202520555 U CN202520555 U CN 202520555U CN 201120441313 CN201120441313 CN 201120441313 CN 201120441313 U CN201120441313 U CN 201120441313U CN 202520555 U CN202520555 U CN 202520555U
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Abstract
The utility model relates to a rotary machine, include: a housing (20); a main bearing seat (90) fixedly arranged in the main bearing seat, wherein a main bearing (92) is arranged in the main bearing seat; a rotating shaft (80) rotatably supported by the main bearing housing via the main bearing, the rotating shaft being provided therein with a through hole (84) extending in an axial direction thereof, the through hole (84) forming part of a lubricating oil circuit; and a pressure sensor (120) in fluid communication with the through hole (84) through the lubrication oil detection passage (110), the pressure sensor configured to output a shut-off signal when a pressure created by the lubrication oil from the lubrication oil detection passage is less than a predetermined value. Adopt the utility model discloses can more directly and detect the lubricated oil mass in the rotation type machinery reliably.
Description
Technical field
The utility model relates to a kind of rotary machine, particularly rotary compressor.
Background technique
Rotary compressor be a kind of in the rotary machine and generally include housing, be contained in compressing mechanism in the housing, be used for the driving mechanism of drive compression mechanism, by running shaft of drive mechanism etc.Usually, in running shaft, be provided with each movable part supplying lubricating oil that axially extended oilhole is thought compressor.In order to guarantee the normal operation of compressor, must there be enough lubricants capacities to obtain sufficient lubrication in the oilhole of running shaft to guarantee the comings and goings parts.When the lubricants capacity that flows in this oilhole is lower than predetermined value, should stop compressor so that compressor is protected.
At present, duplex even join compressor assembly more and be widely used.In this duplex or join in the compressor assembly more; Can optionally start one or more compressor and close other compressor; Therefore lubricant oil can move in these compressors and possibly cause the lubricant oil imbalance in each compressor, even some compressor occurs and lack lubricated oil condition.
In addition, no matter be in the compressor assembly that single compressor constitutes or in the many couplet compressor assembly that constitutes by a plurality of compressors, all might cause lubricant oil to lack because of compressor assembly or compressor leakage of oil.
In addition, in large-scale refrigeration system,, also possibly cause lubricant oil can not in time be circulated back in the compressor and cause that compressor lacks lubricant oil because pipeline length is long, parts are more.
Therefore, the lubricants capacity that must detect compressor exactly prevents compressor damage in time to stop compressor.
The model utility content
The technical problem that the utility model will solve
Yet, also not have at present discovery can detect the means of the lubricants capacity in the oil circuit of compressor with the simple and reliable mode.
The liquid level sensor that at present known some detect liquid level is only applicable to detect the liquid level in fuel tank or the container.These sensors comprise: piezoelectricity type liquid level sensor, dry-reed liquid level sensor, ultrasonic type level sensing, photoelectric liquid-levle sensing etc.The sensor generally can't be applied in sealed type or the half-closed type compressor; Because the working environment in the compressor of these types is harsher; Such as; Temperature range in the compressor and pressure range are all very wide, and pressure and temperature can produce circulation, and also possibly have impurity of cast member etc.In addition, in compressor, also possibly produce the lubricant oil foam, so these sensors can not accurately detect the liquid level of lubricants capacity or lubricant oil.
In addition, in some cases,, but can not guarantee necessarily to have the lubrication oil circulation of q.s or flow in the oilhole of the running shaft of the comings and goings parts supplying lubricating oil of compressor even have the lubricant oil of q.s in compressor or the refrigeration system.Therefore, can not reflect the lubricant oil state that in fact supplies to the comings and goings parts through the oilhole in the running shaft through lubricants capacity or the lubricant oil liquid level that detects in compressor or the refrigeration system true and reliablely.
Therefore, be necessary directly to detect the interior lubricants capacity of oilhole of running shaft.Yet existing liquid level sensor all can't be competent at.
Technological scheme
One or more embodiments' of the utility model a purpose provide a kind of can be directly and detect the rotary machine of the lubricants capacity that flows in the through hole of running shaft reliably.
An aspect of this specification provides a kind of rotating machinery, comprising: housing; Be fixedly installed on the main bearing seat in the said housing, be provided with main bearing in the said main bearing seat; By the running shaft that said main bearing seat supports with rotating mode via said main bearing, be provided with axially extended through hole in the said running shaft along said running shaft, said through hole forms the part of the oil circuit of said rotary machine; And the pressure transducer that is communicated with said vented liquid through the lubricant oil sense channel; Said pressure transducer is configured to when the pressure that forms from the lubricant oil of said lubricant oil sense channel output connection signal during more than or equal to predetermined value, and the pressure that forms when the lubricant oil from said lubricant oil sense channel is exported cut-off signal during less than said predetermined value.
Preferably, said through hole is eccentric with respect to the central axis of said running shaft.
Preferably; Said main bearing comprises each other the axially spaced clutch shaft bearing part and second bearing part along said running shaft, and said lubricant oil sense channel comprises: extend through the sidewall of said running shaft and the oil that is communicated with vented liquid in the said running shaft detects the hole, is formed between said clutch shaft bearing part and said second bearing part and circular gap that is communicated with said oily detection orifice flow body and the communication passage that extends through said main bearing seat and be communicated with said circular gap and said pressure transducer fluid.
Alternately, said lubricant oil sense channel comprises: extend through the sidewall of said running shaft and the oil that is communicated with vented liquid in the said running shaft detects the hole, is formed on the outer surface of said running shaft and detects the circumferential oil groove that the orifice flow body is communicated with said oil and extend through said main bearing and said main bearing seat and the communication passage that is communicated with said circumferential oil groove and said pressure transducer fluid.
Alternately; Said rotary machine further comprises the sleeve that is arranged on the said running shaft outside; And wherein, said lubricant oil sense channel comprises: extend through the sidewall of said running shaft and the oil that is communicated with vented liquid in the said running shaft detects the hole, is formed on the interior perimeter surface of said sleeve and detects circumferential oil groove that the orifice flow body is communicated with and the communication passage that extends through said sleeve and be communicated with said circumferential oil groove and said pressure transducer fluid with said oil.
Alternately; Said rotary machine further comprises the sleeve that is arranged on the said running shaft outside; And wherein, said lubricant oil sense channel comprises: extend through the sidewall of said running shaft and the oil that is communicated with vented liquid in the said running shaft detects the hole, is formed on the outer surface of said running shaft and detects circumferential oil groove that the orifice flow body is communicated with and the communication passage that extends through said sleeve and be communicated with said circumferential oil groove and said pressure transducer fluid with said oil.
Preferably, the said oily central axis that detects the hole radially passes the center of said running shaft.Preferably; The central axis that said oil detects the hole is confirmed according to the oily flow of minimum lubrication of allowing in the said through hole with respect to the angle of line between the central axis of the central axis of said running shaft and said through hole; Saidly allow that minimum lubrication oil flow set must be big more, said angular setting big more.
Preferably, said oil detects the opening of hole in said through hole and confirms according to the oily flow of minimum lubrication of allowing in the said through hole with respect to the distance of line between the central axis of the central axis of said running shaft and said through hole.Preferably, saidly allow that minimum lubrication oil flow set must be big more, said distance setting big more.
Preferably, the opening of said oil detection hole in said through hole confirmed according to the minimum lubrication oil flow of allowing in the said through hole with respect to the distance of the central axis of said running shaft.Preferably, saidly allow that minimum lubrication oil flow set must be big more, said distance setting more little.
Preferably, at least a portion of the opening of said oil detection hole in said through hole is in by in the scope of allowing the formed pasta of minimum lubrication oil flow in the said through hole.
Preferably, in said oil circuit, be provided with the throttling arrangement that is used to control flow of lubrication.
Preferably, said pressure transducer is arranged in the said housing.
Preferably, said pressure transducer is arranged near the said main bearing seat.
Preferably, said pressure transducer is arranged on the outer side wall of said housing.
Preferably, said predetermined value is proofreaied and correct according to the pressure difference that the position causes that is provided with of said pressure transducer on the outer side wall of said housing.
Preferably, said pressure transducer is a pressure switch.
Preferably, the lubricant oil memory section is arranged, and said lubricant oil memory section is communicated with vented liquid through pipeline in the set inside of said rotary machine.
Preferably, the lubricant oil storage device is arranged, and said lubricant oil storage device is communicated with vented liquid through pipeline in the outer installment of said rotary machine.
Preferably, said main bearing seat and said housing form.
Preferably, said lubricant oil sense channel is communicated with said vented liquid near said main bearing seat.
Preferably, said pressure transducer comprises: the hydrodynamic pressure receiving part that is used to receive hydrodynamic pressure; And the conversion portion that can said hydrodynamic pressure be converted to electrical signal.
Preferably, said hydrodynamic pressure receiving part comprises: shell, and be provided with fluid in the said shell and introduce passage, and piston head that can axial motion in said shell, introduce the fluid that passage introduces by said fluid and act on the end face of said piston head; Said conversion portion comprises: first contact and second contact, and the contact disk that electric connection is provided between said first contact and said second contact, said contact disk is arranged in the said piston head.
Preferably, be formed with many otch in the said contact disk.
Preferably, the side towards said piston head of said contact disk is provided with insulating trip, and the opposite side of said contact disk is provided with Returnning spring.
Preferably, said first contact and said second contact comprise a plurality of contact pilotages separately.
Preferably, be provided with vent in the said piston head.
Preferably, said rotary machine is a kind of in scroll compressor, screw compressor, the rotor-type compressor.
Preferably, said rotary machine is a horizontal type scroll compressor.Beneficial effect
Advantage according to one or more embodiments' of the utility model rotary machine is:
In rotary machine, be provided with the pressure transducer that is communicated with the vented liquid of running shaft through the lubricant oil sense channel; When the pressure that forms from the lubricant oil of lubricant oil sense channel pressure transducer output connection signal during more than or equal to predetermined value, and the pressure that forms when lubricant oil from the lubricant oil sense channel during less than said predetermined value pressure transducer export cut-off signal.Through changing into the detection of lubricant oil volume or quality lubricant oil because the detection of the pressure that centrifugal force forms; Can more promptly and accurately, reliably detect the lubricants capacity that flows in the through hole of running shaft easily; Thereby when lubricants capacity is not enough, can in time closes rotary machine and prevent its damage such as compressor.
The simple structure of pressure transducer, with low cost, therefore can reduce the cost that lubricant oil detects greatly.
Through being set, the structure that the oil that is communicated with through hole in the running shaft detects the hole (such as the position of its angle of inclination, opening etc.) can set the minimum lubrication oil flow of allowing to be detected suitably.In other words, when the actual flow of lubrication in the through hole is lower than when allowing minimum lubrication oil flow, pressure transducer input cut-off signal, thus the formula machinery that stops the rotation is to protect it.
Therefore pressure transducer can be arranged on the inside of rotary machine, also can be arranged on the outside of rotary machine, can be easily the various parts of rotary machine be carried out flexible arrangement.When the running shaft horizontal arrangement of rotary machine; Can regulate through the elastic force of the elastic member in the pressure transducer (such as Returnning spring) and compensate owing to pressure transducer is arranged in pressure difference that the diverse location of the periphery of rotary machine causes, allow minimum lubrication oil flow in the running shaft thereby in the position of flexible arrangement pressure transducer, can detect more exactly.
Pressure sensor structure according to one or more embodiments of the utility model is simpler, and cost is lower, but reliability is higher, the response time is shorter.
In addition; First contact and second contact of pressure transducer can comprise a plurality of contact pilotages separately; Provide between this external first contact and second contact in the contact disk of electric connection and can be provided with many otch; This structure has improved the contact force between contact and the contact disk and can eliminate the manufacturing tolerances between the various parts, therefore can improve the reliability of pressure transducer.
Description of drawings
Through following description with reference to accompanying drawing, one or several embodiment's of the utility model feature and advantage will become and be more prone to understand, wherein:
Fig. 1 is the schematic cross sectional view according to the rotary compressor of a kind of mode of execution of the utility model;
Fig. 2 is the enlarged view of the part of rotary compressor shown in Figure 1;
Fig. 3 is the enlarged view of I part among Fig. 2;
Fig. 4 is the schematic representation according to the lubricant oil sense channel of the utility model mode of execution; Wherein Fig. 4 A shows the longitdinal cross-section diagram of running shaft, main bearing and oil guide pipe; Fig. 4 B shows the end elevation along the A direction of running shaft, and Fig. 4 C shows the amplification sectional view of running shaft along the B-B cross section;
Fig. 5 shows the schematic representation of the another kind of mode of execution of lubricant oil sense channel;
Fig. 6 shows the schematic representation of another mode of execution of lubricant oil sense channel;
Fig. 7 shows the exploded perspective view according to the pressure transducer of the utility model mode of execution;
Fig. 8 shows the planimetric map according to the contact disk of the pressure transducer of the utility model mode of execution;
Schematic representation when Fig. 9 shows pressure transducer according to the utility model mode of execution and is in off state;
Schematic representation when Figure 10 shows pressure transducer according to the utility model mode of execution and is on state.
Embodiment
Following description related to the preferred embodiment only is exemplary, and never is the restriction to the utility model and application or usage.
To the essential structure according to the rotary compressor of a kind of mode of execution of the utility model be described with reference to Fig. 1 below.Fig. 1 is the schematic cross sectional view according to the rotary compressor of a kind of mode of execution of the utility model.Rotary compressor shown in Figure 1 is a kind of scroll compressor; But; The mode of execution that it should be appreciated by those skilled in the art that the utility model is not limited to the scroll compressor shown in the figure, and opposite the utility model can also be applied to the compressor that comprises running shaft of other types; Such as screw compressor, rotor-type compressor etc., and the rotary machine that comprises any kind of running shaft.In addition, the utility model not only is applicable to the horizontal compressor of running shaft horizontal orientation, and is applicable to the vertical compressor that running shaft is vertically-oriented.
Rotary compressor 10 comprises and is generally columnar housing 20.End at housing 20 is provided with dismountable front cover 30, is provided with dismountable rear end cover 40 at the other end of housing 20.Front cover 30 is fixed to housing 20 with rear end cover 40 through the fastening piece such as bolt.Housing 20 is provided with the gaseous refrigerant that air input joint is used to suck low pressure.Front cover 30 is provided with the refrigeration agent after the discharging joint is used to discharge compression.Between housing 20 and front cover 30, also be provided with the acoustical panel 50 of axial direction horizontal expansion (in Fig. 1, extending), thereby the inner space of compressor is separated into high pressure side and low voltage side for the roughly vertical direction in edge with respect to housing 20.Particularly, the space between front cover 30 and the acoustical panel 50 constitutes the space, high pressure side, and the space between acoustical panel 50, housing 20 and the rear end cover 40 constitutes the low voltage side space.In the example of Fig. 1, the space between front cover 30 and the acoustical panel 50 also is configured for storing the lubricant oil memory section of lubricant oil.In other examples, the lubricant oil storage device can be arranged on the outside of compressor 10, and is communicated with the lubricating oil inlet and the lubricating oil outlet of compressor 10 through corresponding pipeline.
Be provided with compressing mechanism 60 and driving mechanism 70 in the housing 20.In the example depicted in fig. 1, compressing mechanism 60 comprise be engaged with each other decide scroll element 62 and moving scroll element 64.Driving mechanism 70 comprises stator 72 and rotor 74.Stator 72 is fixedly connected with housing 20.Running shaft 80 is engaged in the rotor 74 and with rotor 74 and rotates.First end of running shaft 80 (being left end among Fig. 1) is provided with eccentric crank pin 82.The eccentric crank pin 82 of running shaft 80 inserts in the hub portion 66 of moving scroll element 64 and drives moving scroll element 64 with rotation.
Be provided with the axially extended through hole 84 that is used for through lubricant oil along running shaft 80 in the running shaft 80, through hole 84 comprises concentric holes part 84-1 that second end from running shaft 80 (being right-hand member Fig. 1) extends and is eccentric and extend to the eccentric opening part 84-2 of the end face of eccentric crank pin 82 with respect to concentric holes part 84-1.Said through hole 84 forms the part of the oil circuit of compressor.
First end of running shaft 80 is supported via main bearing 92 by main bearing seat 90, and second end is supported by rear bearing block 42.Main bearing 92 is arranged in the main bearing seat 90.In example shown in Figure 1, main bearing seat 60 forms with housing 20.Yet main bearing seat 60 can form dividually with housing 20 and be fixed together through suitable means of fixation then.Rear bearing block 42 is formed in the rear end cover 40 and is provided with the bearing of second end that is used for supporting rotating shaft 80 therein.
The concentric holes part 84-1 of the through hole 84 of running shaft 80 is communicated with to introduce lubricant oil via the lubricant oil storage device of lubricant oil memory section in pipeline and the compressor front cover 30 or compressor outer installment.When compressor operation; Lubricant oil gets into the concentric holes part 84-1 of running shaft 80; The flows outside along the centrifugal force direction (referring to Fig. 4 C) that under action of centrifugal force, gets into eccentric opening part 84-2 and pasting eccentric opening part 84-2 then, finally the end face from the eccentric crank pin 82 of running shaft flows out the comings and goings parts with lubricate compressors.
In addition, cross the flow of lubrication of through hole 84 and the pressure that reduces lubricant oil, throttling arrangement can be set in the ingress of concentric holes part 84-1 for control flows.It should be appreciated by those skilled in the art that throttling arrangement can be arranged on other positions in the oil circuit.
In addition, it should be appreciated by those skilled in the art that compressing mechanism 60 and driving mechanism 70 are not limited to the structure shown in the figure.On the contrary, compressing mechanism 60 can be rotor-type compressor structure or screw compressor structure etc., and driving mechanism 70 can be arranged on enclosure interior or be arranged on hydraulic drive mechanism, pneumatic drive mechanism and the various transmission driving mechanism of outside.
Following document provides other details CN101900113A, US2009/0068048A1, US2009/0068045A1, US2009/0068044A1 and the US2009/0068043A1 of the rotary compressor relevant with the utility model mode of execution.The full content of these documents is introduced this paper through reference.
Of preamble, the comings and goings parts of compressor must obtain the lubricated fully normal operation that could guarantee compressor.Yet the lubricant oil that has q.s in compressor or the refrigeration system can not guarantee necessarily that these lubricant oil can be fed to movable part reliably fully.Therefore; In the utility model; The flow of lubrication that has adopted direct measurement lubricant oil to be supplied in the through hole of running shaft of movable part judges whether movable part can access sufficient lubrication, and when determining the flow of lubricant quantity not sufficient, sends the running that signal stops compressor.In addition, because the rotation of running shaft, the lubricant oil in the through hole of running shaft will produce hydrodynamic pressure under action of centrifugal force, therefore can judge flow rate of lubricating oil through measuring or detect the hydrodynamic pressure that is produced by the lubricant oil in the through hole.Thereby; To change into the detection of the pressure that lubricant oil is formed to the detection of lubricant oil volume or quality; Pressure transducer even the complicated liquid level sensor with high costs of pressure switch substitute structure with cheap and simple greatly reduce the cost of product and have improved reliability of products.
To the lubricant oil detection device according to the utility model be described with reference to Fig. 1-4 below.Wherein, Fig. 2 is the enlarged view of the part of rotary compressor shown in Figure 1.Fig. 3 is the enlarged view of I part among Fig. 2.Fig. 4 is the schematic representation according to the lubricant oil sense channel of the utility model mode of execution; Wherein Fig. 4 A shows the longitdinal cross-section diagram of running shaft, main bearing and oil guide pipe; Fig. 4 B shows the end elevation along the A direction of running shaft, and Fig. 4 C shows the amplification sectional view of running shaft along the B-B cross section.
Shown in Fig. 1-3, also comprise lubricant oil detection device 100 according to the rotary compressor 10 of the utility model mode of execution.Lubricant oil detection device 100 according to the utility model mode of execution comprises lubricant oil sense channel 110 that is communicated with through hole 84 fluids of running shaft 80 and the pressure transducer 120 that is communicated with through hole 84 fluids through lubricant oil sense channel 110.
In Fig. 1-3 example shown, lubricant oil sense channel 110 preferably is communicated with the eccentric opening part 84-2 fluid of through hole 84, but it will be understood by those skilled in the art that lubricant oil sense channel 110 also can be communicated with the concentric holes part 84-1 fluid of through hole 84.These two kinds of structures can be realized essentially identical effect.In addition, preferably, lubricant oil sense channel 110 is communicated with to detect the flow of lubrication that can supply to movable part more exactly with the eccentric opening part 84-2 fluid of through hole 84 near main bearing seat 90.
In the example shown in Fig. 1-3, the sidewall that lubricant oil sense channel 110 extends through main bearing seat 90, main bearing 92 and running shaft 80 is communicated with through hole 84 fluids.Particularly, main bearing 92 can comprise each other the axially spaced clutch shaft bearing part 92-1 and the second bearing part 92-2 along running shaft.Lubricant oil sense channel 110 can comprise: extend through the sidewall of running shaft 80 and the oil detection hole 86 that is communicated with running shaft 80 interior through hole 84 fluids, be formed between the clutch shaft bearing part 92-1 and the second bearing part 92-2 and circular gap 92-3 that is communicated with oil detection hole 86 fluids and the oil guide pipe 94 that extends through main bearing seat 90 and between circular gap 92-3 and pressure transducer 120, provide fluid to be communicated with.The clutch shaft bearing part 92-1 and the second bearing part 92-2 can be force-fitted in the main bearing seat 90 respectively and keep certain axial distance to form said circular gap 92-3 betwixt.Pressure transducer 120 is arranged on the outer side wall of housing 20, and can connect through for example bolt, be threaded, mode such as welding is fixed on the outer side wall of housing 20.In this case, can save the expensive real estate in the compressor housing, simplify the layout of various parts.Yet, it will be understood by those skilled in the art that pressure transducer 120 also can be arranged on housing 20 inside to reduce because the caused detection error of length of lubricant oil sense channel 110 etc.
Alternately; Lubricant oil sense channel 110 can also be configured to comprise: extend through the sidewall of running shaft 80 and the oil that is communicated with through hole 84 fluids in the running shaft 80 detects hole 86, is formed on the outer surface of running shaft 80 and the circumferential oil groove that is communicated with oil detection hole 86 fluids and extend through main bearing 92 and main bearing seat 90 and the communication passage (that is, oil guide pipe 94) that is communicated with circumferential oil groove and pressure transducer 120 fluids.
Lubricant oil sense channel 110 can also be configured to other forms.For example, Fig. 5 and Fig. 6 show other two kinds of mode of executions of lubricant oil sense channel.Particularly, can sleeve 150 be set in the zone between main bearing seat 90 and driving mechanism 70 of running shaft 80.Sleeve 150 can be fixing with respect to housing 20 through suitable manner.
As shown in Figure 5, sleeve 150 is provided with the opening 154 that is used to pass oil guide pipe, and the inner circle wall of sleeve 150 is provided with opening 154 and oil on the running shaft 80 and detects the circumferential oil groove 152 that hole 86 is communicated with.In this case, lubricant oil sense channel 110 can be configured to comprise: extend through the sidewall of running shaft 80 and the oil that is communicated with through hole 84 fluids in the running shaft 80 detects hole 86, is formed on the interior perimeter surface of sleeve 150 and circumferential oil groove 152 that is communicated with oil detection hole 86 fluids and the communication passage (being oil guide pipe 94) that extends through sleeve 150 and be communicated with circumferential oil groove 152 and pressure transducer 120 fluids.
Alternately, as shown in Figure 6, outer surface that can running shaft 80 is provided with circumferential oil groove 88 to replace the circumferential oil groove on the sleeve 150.In this case, lubricant oil sense channel 110 can be configured to comprise: extend through the sidewall of running shaft 80 and the oil that is communicated with through hole 84 fluids in the running shaft 80 detects hole 86, is formed on the outer surface of running shaft 80 and circumferential oil groove 88 that is communicated with oil detection hole 86 fluids and the communication passage (being oil guide pipe 94) that extends through sleeve 150 and be communicated with circumferential oil groove 88 and pressure transducer 120 fluids.
Under above-mentioned four kinds of situation; No matter circumferentially oil groove is formed by the circular gap between two sections main bearings; Also be arranged on the outer surface of running shaft or on the interior perimeter surface of sleeve, its purpose all is to have continuous fluid connected state in order in the rotary course of running shaft, to keep between through hole 84 and the pressure transducer 120.
Explain in the mode of execution of the utility model the flow of lubrication testing process in the through hole of running shaft referring to Fig. 4.
When the lubricant oil from the outside lubricant oil storage device of the lubricant oil memory section of compressor inside or compressor gets into the through hole 84 (comprising concentric holes part 84-1 and eccentric opening part 84-2) of running shaft 80 when middle, lubricant oil forms the pasta OL shown in Fig. 4 C under action of centrifugal force.That is, the pasta OL of lubricant oil is close to the external lateral portion along the centrifugal force direction of through hole 84.When flow rate of lubricating oil surpasses certain value; Lubricant oil can get in the lubricant oil detection hole 86 that is communicated with through hole 84 and via lubricant oil sense channel 110 and get into pressure transducers 120, thereby pressure transducer 120 can send connection signal so that compressor remains in operation.Otherwise when flow rate of lubricating oil was lower than certain value, lubricant oil can not get into lubricant oil and detect in the hole 86, thereby did not have lubricant oil to arrive pressure transducer 120, thereby pressure transducer 120 sends cut-off signal to stop the running of compressor.
Shown in Fig. 4 C, can easily control and allow minimum lubrication oil flow what compressor carried out stoppage protection through changing structure that lubricant oil detects hole 86.In other words,, stop the running of compressor when flow of lubrication actual in the through hole 84 is lower than when allowing minimum lubrication oil flow, and when flow of lubrication actual in the through hole 84 when allowing minimum lubrication oil flow, the permission compressor remains in operation.Allow that minimum lubrication oil flow can be specifically definite through modes such as experiments according to artificer's requirement, and have demands of different, repeat no more at this to the compressor of different model or applied environment.
A kind of mode of execution according to the utility model; The central axis O1-A that oil detects hole 86 can be arranged to radially pass the center O 1 of running shaft 80, and the oil central axis O1-A that detects hole 86 can confirm according to the oily flow of minimum lubrication of allowing in the through hole 84 with respect to the angle [alpha] of line O1-O2 between the central axis O2 of the central axis O1 of running shaft 80 and through hole 84.Particularly, allow that minimum lubrication oil flow set must be big more, then angle [alpha] can be set greatly more.
According to the another kind of mode of execution of the utility model, oil detects the opening of hole 86 in through hole 84 and can confirm according to the oily flow of minimum lubrication of allowing in the through hole 84 with respect to the distance W of line O1-O2 between the central axis O2 of the central axis O1 of running shaft 80 and through hole 84.Particularly, allow that minimum lubrication oil flow set must be big more, then distance W is set greatly more.
According to another mode of execution of the utility model, oil detects the opening of hole 86 in through hole 84 and can confirm according to the minimum lubrication oil flow of allowing in the through hole 84 with respect to the distance of the central axis O1 of running shaft 80.Particularly, allow that minimum lubrication oil flow set must be big more, then distance L is set more for a short time.
According to the further mode of execution of the utility model, at least a portion that oil detects the opening of hole 86 in through hole 84 is in by in the scope of allowing the formed pasta OL of minimum lubrication oil flow in the through hole 84.
In the described example of Fig. 4 C, lubricant oil detects hole 86 is arranged on pasta OL with respect to running shaft 80 sense of rotation downstream side.Yet, it should be appreciated by those skilled in the art that lubricant oil detects hole 86 also can be arranged on pasta OL with respect to running shaft 80 sense of rotation upstream side.
In the described example of Fig. 4 C, lubricant oil detects hole 86 and is arranged to radially extend towards the central axis O1 of running shaft 80.Yet; Those skilled in the art should understand that; Lubricant oil detects hole 86 and can be arranged to extend along any direction; As long as it can be communicated with through hole 84 fluids, and in this case, can control through the distance W of opening and the line O1-O2 of control lubricant oil detection hole 86 in through hole 84 or with the distance L of central axis O1 and allow the oily flow of minimum lubrication.
As stated, just can control and allow the oily flow of minimum lubrication in the through hole 84 through changing structure (position, direction etc.) that lubricant oil detects hole 86, so the detection device of the utility model can easily be applied to the compressor of dissimilar or model.
In addition, as shown in Figure 2, pressure transducer 120 can be arranged on the top of housing 20 outer side walls.Yet,, can pressure transducer 120 be arranged on any position on housing 20 outer side walls, for example horizontal sidepiece or bottom according to the layout requirement of compressor.At this moment, since the difference of lubricant oil sense channel 110 arrange sensitivity that the pressure difference of caused hydrodynamic pressure can be through the adjustment pressure transducer or the elastic member in the pressure transducer for example the elastic force of spring compensate or proofread and correct.
Fig. 7-10 shows the example according to the pressure transducer of a kind of mode of execution of the utility model.Wherein, Fig. 7 shows the exploded perspective view according to the pressure transducer of the utility model mode of execution; Fig. 8 shows the planimetric map according to the contact disk of the pressure transducer of the utility model mode of execution; Schematic representation when Fig. 9 shows pressure transducer according to the utility model mode of execution and is in off state; Schematic representation when Figure 10 shows pressure transducer according to the utility model mode of execution and is on state.
As shown in Figure 7, pressure transducer 120 mainly comprises: shell 121, and it has the internal surface of substantial cylindrical; Cover plate 131, an end face of its covering shell 121; First contact 134 and second contact 135, they pass cover plate 131 and seal with respect to cover plate 131 via seal element 138; The piston head 124 that can in shell 121, slide; Contact disk 127, it is arranged in the piston head 124 and can between first contact 134 and second contact 135, electric connection be provided; Returnning spring 129, it is used to contact disk 127 restoring force is provided.In addition, can also between shell 121 and cover plate 131, diaphragm seal 130 be set, and shell 121 can be fixed on the housing 20 of compressor with cover plate 131 through for example bolt 132.In addition, piston head 124 can be processed by plastics or metallic material.Process so that durability to be provided better by metallic material when piston head 124, can between piston head 124 and contact disk 127, insulating trip 126 be provided.Can also between contact disk 127 and spring 129, pressure ring 128 be set.In addition, on shell 121, also be provided with bullport 123, piston head 124 is provided with guide rod 125, and guide rod 125 can slide in bullport 123, thereby makes that piston head 124 can motion reposefully in shell 121.On shell 121, further be provided with fluid and introduce passage 137 to introduce the lubricant oil of this lubricant oil sense channel 110.The lubricant oil of introducing from lubricant oil sense channel 110 acts on and promotes piston head 124 thus on the end face of piston head 124 and seesaw.
Shown in Fig. 9 and 10; When lubricant oil is introduced pressure transducer 120; Piston head 124 is pushed and moves towards first contact 134 and second contact 135; At this moment, thereby contact disk 127 is also along with piston head 124 is switched on second contact 135 towards first contact 134 and motion first contacts 134, second contact 135, and this moment, pressure transducer 120 was exported connection signals.Otherwise when not or when no longer including lubricant oil and introducing pressure transducer 120, piston head 124 spring 129 that is reset promotes to leave first contact 134 and second contact 135, and this moment, pressure transducer 120 was exported cut-off signals.
In the guide rod 125 of piston head 124, be provided with vent 133 to reduce the fluid resistance in piston head 124 movement processes.
As shown in Figure 8, be provided with many otch S according to the contact disk 127 of the utility model mode of execution.These otch S cuts into a plurality of overhangs with contact disk 127.When contact disk 127 contacted with second contact 135 with first contact 134, these overhangs can be out of shape so that stable contact to be provided largely.Adopt this structure; Even because the end that foozle or assembly error cause first contact 134 and second contact 135 is not or not same plane, because the elasticity that overhang provides also can be improved the contact stabilization of first contact 134 and second contact 135 and contact disk 127.
In addition, each in first contact 134 and second contact 135 can comprise a plurality of contact pilotages respectively, with further improvement contact effect.
Through test, adopt the pressure transducer of the utility model mode of execution that good signal output and short reaction time can be provided, can protection reliably be provided to compressor.
Although in the mode of execution of the utility model, described a kind of pressure transducer that comprises piston, contact disk, contact and spring; But those skilled in the art should understand that; Can in the lubricant oil detection device of the utility model, adopt any suitable pressure transducer, particularly pressure switch well known in the art.
Although described the various mode of executions of the utility model in detail at this; But should be appreciated that the utility model is not limited to the embodiment of describing in detail and illustrating here, under the situation of essence that does not depart from the utility model and scope, can realize other modification and variant by those skilled in the art.All these modification and variant all fall in the scope of the utility model.And all members described here can be replaced by the member that is equal on the other technologies property.
Claims (31)
1. rotary machine comprises:
Housing (20);
Be fixedly installed on the main bearing seat (90) in the said housing (20), be provided with main bearing (92) in the said main bearing seat; And
The running shaft (80) that supports with rotating mode via said main bearing (92) by said main bearing seat (90); Be provided with in the said running shaft (80) along the axially extended through hole (84) of said running shaft (80), said through hole (84) forms the part of the oil circuit of said rotary machine;
It is characterized in that said rotary machine further comprises the pressure transducer (120) that is communicated with said through hole (84) fluid through lubricant oil sense channel (110); Said pressure transducer (120) is configured to when the pressure that forms from the lubricant oil of said lubricant oil sense channel (110) output connection signal during more than or equal to predetermined value, and the pressure that forms when the lubricant oil from said lubricant oil sense channel (110) is exported cut-off signal during less than said predetermined value.
2. rotary machine as claimed in claim 1, wherein, said through hole (84) is eccentric with respect to the central axis of said running shaft (80).
3. rotary machine as claimed in claim 1, wherein, said main bearing (92) comprises axially spaced clutch shaft bearing part (92-1) and second bearing part (92-2) of the said running shaft in edge (80) each other, and
Said lubricant oil sense channel (110) comprising: extend through the sidewall of said running shaft (80) and the oil detection hole (86) that is communicated with interior through hole (84) fluid of said running shaft (80); Be formed between said clutch shaft bearing part (92-1) and said second bearing part (92-2) and and detect the circular gap (92-3) that hole (86) fluid is communicated with said oil; And the communication passage that extends through said main bearing seat (90) and be communicated with said circular gap (92-3) and said pressure transducer (120) fluid.
4. rotary machine as claimed in claim 1; Wherein, said lubricant oil sense channel (110) comprising: extend through the sidewall of said running shaft (80) and detect hole (86) with the oil that is communicated with of through hole (84) fluid in the said running shaft (80), be formed on the outer surface of said running shaft (80) and the circumferential oil groove that is communicated with said oil detection hole (86) fluid and extend through said main bearing (92) and said main bearing seat (90) and the communication passage that is communicated with said circumferential oil groove and said pressure transducer (120) fluid.
5. rotary machine as claimed in claim 1 further comprises the sleeve (150) that is arranged on said running shaft (80) outside, and
Wherein, said lubricant oil sense channel (110) comprising: extend through the sidewall of said running shaft (80) and detect hole (86) with the oil that is communicated with of through hole (84) fluid in the said running shaft (80), be formed on the interior perimeter surface of said sleeve (150) and circumferential oil groove (152) that is communicated with said oil detection hole (86) fluid and the communication passage that extends through said sleeve (150) and be communicated with said circumferential oil groove (152) and said pressure transducer (120) fluid.
6. rotary machine as claimed in claim 1 further comprises the sleeve (150) that is arranged on said running shaft (80) outside, and
Wherein, said lubricant oil sense channel (110) comprising: extend through the sidewall of said running shaft (80) and detect hole (86) with the oil that is communicated with of through hole (84) fluid in the said running shaft (80), be formed on the outer surface of said running shaft (80) and circumferential oil groove (88) that is communicated with said oil detection hole (86) fluid and the communication passage that extends through said sleeve (150) and be communicated with said circumferential oil groove (88) and said pressure transducer (120) fluid.
7. like each described rotary machine among the claim 3-6, wherein, the central axis that said oil detects hole (86) radially passes the center of said running shaft (80).
8. rotary machine as claimed in claim 7; Wherein, The central axis that said oil detects hole (86) is confirmed according to the oily flow of minimum lubrication of allowing in the said through hole (84) with respect to the angle of line between the central axis of the central axis of said running shaft (80) and said through hole (84); Saidly allow that minimum lubrication oil flow set must be big more, said angular setting must be big more.
9. like each described rotary machine among the claim 3-6; Wherein, said oil detects the opening of hole (86) in said through hole (84) and confirms according to the oily flow of minimum lubrication of allowing in the said through hole with respect to the distance of line between the central axis of the central axis of said running shaft (80) and said through hole (84).
10. rotary machine as claimed in claim 9 wherein, saidly allows that minimum lubrication oil flow set must be big more, and said distance setting must be big more.
11. like each described rotary machine among the claim 3-6; Wherein, the opening of said oil detection hole (86) in said through hole (84) confirmed according to the minimum lubrication oil flow of allowing in the said through hole (84) with respect to the distance of the central axis of said running shaft (80).
12. rotary machine as claimed in claim 11 wherein, saidly allows that minimum lubrication oil flow set must be big more, said distance setting must be more little.
13. like each described rotary machine among the claim 3-6, wherein, at least a portion that said oil detects the opening of hole (86) in said through hole (84) is in by in the scope of allowing the formed pasta of minimum lubrication oil flow in the said through hole (84).
14. rotary machine as claimed in claim 1 wherein, is provided with the throttling arrangement that is used to control flow of lubrication in said oil circuit.
15. rotary machine as claimed in claim 1, wherein, said pressure transducer (120) is arranged in the said housing (20).
16. rotary machine as claimed in claim 1, wherein, said pressure transducer (120) is arranged near the said main bearing seat (90).
17. rotary machine as claimed in claim 1, wherein, said pressure transducer (120) is arranged on the outer side wall of said housing (20).
18. rotary machine as claimed in claim 17, wherein, said predetermined value is proofreaied and correct according to the pressure difference that the position causes that is provided with of said pressure transducer (120) on the outer side wall of said housing (20).
19. rotary machine as claimed in claim 1, wherein, said pressure transducer (120) is a pressure switch.
20. rotary machine as claimed in claim 1 wherein, in the set inside of said rotary machine the lubricant oil memory section is arranged, and said lubricant oil memory section is communicated with said through hole (84) fluid through pipeline.
21. rotary machine as claimed in claim 1 wherein, in the outer installment of said rotary machine the lubricant oil storage device is arranged, and said lubricant oil storage device is communicated with said through hole (84) fluid through pipeline.
22. rotary machine as claimed in claim 1, wherein, said main bearing seat (90) forms with said housing (20).
23. rotary machine as claimed in claim 1, wherein, said lubricant oil sense channel (110) is communicated with said through hole (84) fluid near said main bearing seat (90).
24. rotary machine as claimed in claim 1, wherein, said pressure transducer (120) comprising: the hydrodynamic pressure receiving part that is used to receive hydrodynamic pressure; And the conversion portion that can said hydrodynamic pressure be converted to electrical signal.
25. rotary machine as claimed in claim 24, wherein, said hydrodynamic pressure receiving part comprises:
Shell (121) is provided with fluid and introduces passage (137) in the said shell (121), and
Piston head (124) that can axial motion in said shell (121) is introduced the fluid that passage (137) introduces by said fluid and is acted on the end face of said piston head (124);
Said conversion portion comprises:
First contact (134) and second contact (135), and
The contact disk (127) of electric connection is provided between said first contact (134) and said second contact (135), and said contact disk (127) is arranged in the said piston head (124).
26. rotary machine as claimed in claim 24 wherein, is formed with many otch (S) in the said contact disk (127).
27. rotary machine as claimed in claim 24, wherein, the side towards said piston head (124) of said contact disk (127) is provided with insulating trip (126), and the opposite side of said contact disk (127) is provided with Returnning spring (129).
28. rotary machine as claimed in claim 24, wherein, said first contact (134) and said second contact (135) comprise a plurality of contact pilotages separately.
29. rotary machine as claimed in claim 24 wherein, is provided with vent (133) in the said piston head (124).
30. rotary machine as claimed in claim 1, wherein, said rotary machine is a kind of in scroll compressor, screw compressor, the rotor-type compressor.
31. rotary machine as claimed in claim 1, wherein, said rotary machine is a horizontal type scroll compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120441313 CN202520555U (en) | 2011-11-07 | 2011-11-07 | Rotary machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120441313 CN202520555U (en) | 2011-11-07 | 2011-11-07 | Rotary machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520555U true CN202520555U (en) | 2012-11-07 |
Family
ID=47103507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120441313 Expired - Lifetime CN202520555U (en) | 2011-11-07 | 2011-11-07 | Rotary machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520555U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089648A (en) * | 2011-11-07 | 2013-05-08 | 艾默生环境优化技术(苏州)有限公司 | Rotary machine and control method thereof |
| CN104806738A (en) * | 2014-01-28 | 2015-07-29 | 株式会社神崎高级工机制作所 | Lubricating oil supply structure |
| CN105090032A (en) * | 2014-05-15 | 2015-11-25 | 艾默生环境优化技术(苏州)有限公司 | Liquid flow sensor and machine comprising same |
| CN109296537A (en) * | 2017-07-21 | 2019-02-01 | 曼德电子电器有限公司 | Shaft and compressor |
-
2011
- 2011-11-07 CN CN 201120441313 patent/CN202520555U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089648A (en) * | 2011-11-07 | 2013-05-08 | 艾默生环境优化技术(苏州)有限公司 | Rotary machine and control method thereof |
| CN103089648B (en) * | 2011-11-07 | 2016-03-30 | 艾默生环境优化技术(苏州)有限公司 | Rotary compressor and control method thereof |
| CN104806738A (en) * | 2014-01-28 | 2015-07-29 | 株式会社神崎高级工机制作所 | Lubricating oil supply structure |
| CN105090032A (en) * | 2014-05-15 | 2015-11-25 | 艾默生环境优化技术(苏州)有限公司 | Liquid flow sensor and machine comprising same |
| CN109296537A (en) * | 2017-07-21 | 2019-02-01 | 曼德电子电器有限公司 | Shaft and compressor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |