CN1690434A - Screw compressor - Google Patents
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- CN1690434A CN1690434A CN 200410037560 CN200410037560A CN1690434A CN 1690434 A CN1690434 A CN 1690434A CN 200410037560 CN200410037560 CN 200410037560 CN 200410037560 A CN200410037560 A CN 200410037560A CN 1690434 A CN1690434 A CN 1690434A
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Abstract
The invention relates to spiral compressor. Based on existed traditional low-pressure screw compressor, it installs a point lead on the point end of the rotational axle, and utilizes gas cooling agent using middle-pressure and extruded-pressure to float the rotational reel and close to the fixed reel. For the form of this vertical sealing chamber, a metal plate with back pressure regulator is equipped, and since the rotational reel close to the fixed reel, it can avoid the leak of gas cooling agent from compressor significantly better than the traditional one, while having the advantages of traditional one.
Description
Technical field
The present invention relates to a kind of compressor, when particularly relating to the most advanced and sophisticated sealing lead of the tip end that is mounted on spinning reel in a kind of structure of having removed existing traditional low pressure screw compressor, utilize the spinning reel lower end in the middle of press or extrude the gas refrigerant screw compressor of pressure condition.
Background technique
General existing screw compressor, form by making up two circinate shapes, and the relative movement generation compression by fixing spool and spinning reel, and, because it has characteristics such as high efficiency, low noise, volume be little, in light weight, and is widely used in aspects such as domestic air conditioning, car air conditioner.
Above-mentioned such screw compressor can be divided into low pressure type or high pressure type according to the gas of filling suction chamber to enclosure or the gas of extrusion.The structure that now is similar to the low pressure type screw compressor that has traditional screw compressor now is described as follows:
Seeing also shown in Figure 1ly, is the section of structure of general existing traditional screw compressor.Above-mentioned screw compressor according to prior art, it comprises: a shell 15, suction pipe 1 and suction chamber 4 that fluid from outside is flowed into, the drive motor 2 that is fixed in above-mentioned seal container 15 inside and forms by stator 2a and rotor 2b, by the live axle 3 of above-mentioned drive motor 2 driven rotary, be positioned at the upper end of above-mentioned live axle 3 and depart from the center of live axle 3 and centrifugal 3a of live axle of forming, the spinning reel 7 that is fixed in centrifugal 3a of above-mentioned live axle and is got up for the refrigeration agent that it can be compressed suck by the upside support of main body 5 by suction pipe 1, by combining with above-mentioned spinning reel 7 and being fixed in the formed compression coil axial region of fixedly spool of aforementioned body 5 upsides, the Ao Haimu that above-mentioned spinning reel is rotated in the rotation that prevents above-mentioned spinning reel 7 in said fixing spool 8 encircles (oldham ring) 6, support the main body 5 of above-mentioned Ao Haimu ring 6 and above-mentioned spinning reel 7, the extrusion mouth 9 that the high-pressure refrigerant that compresses through the compression of said fixing spool 8 and spinning reel 7 is discharged, a safety check 10 that is fixed in above-mentioned extrusion mouth 9 and can prevents to flow backwards by the refrigeration agents that extrude mouth 9 extrusion, be incorporated into the back side of said fixing spool 8 and the inside of above-mentioned shell 15 is divided into suction chamber 4 that sucks low pressure refrigerant and the top barrier film 12 that extrudes the delivery chamber 11 of piling up high-pressure refrigerant, and the blow-off pipe 14 that is incorporated into above-mentioned delivery chamber 11 and high-pressure liquid is discharged is formed.Unaccounted symbol 13 is a upper case 13.
At this moment, in order to prevent axial leakage, on the tip end of above-mentioned spinning reel 7, install and be provided with most advanced and sophisticated sealing lead (tipseal) 7b from the high-pressure section of above-mentioned pressing chamber P to low-pressure section.Unaccounted symbol 13 is a shell 13.
The job step that now has the low pressure type screw compressor of said structure is described as follows: give as the drive motor 2 of the constituent element of the screw compressor of said structure and connect after the power supplys, driving by above-mentioned drive motor 2, the live axle 3 that the rotor 2b of above-mentioned drive motor 2 is fixed in insertion begins rotation, and be fixed in spinning reel 7 on centrifugal 3b of driving of above-mentioned live axle 3 upper ends, also being rotated (revolution) because the effect of linking up is arranged in said fixing spool 8 inside moves, and the pressing chamber P that the gas refrigerant of low-temp low-pressure is flow in the pressing chamber P and form because of fixedly spool 8 and spinning reel 7 combinations by suction pipe 1, at this moment, as shown in Figure 2, be to show in the existing screw compressor that passes to be incorporated into the spinning reel and the fixing view of the spinning reel on the spool, spiral motion by above-mentioned spinning reel 7 is moved to the central part of pressing chamber P, and be compressed into the gaseous state of High Temperature High Pressure, compressed gas refrigerant is rejected to the rotation outside by extruding mouth 9, is forced into the outside of screw compressor simultaneously by the blow-off pipe 14 in shell 15 1 sides.
As shown in Figure 1, the low pressure type screw compressor of above-mentioned this spline structure, the gas refrigerant of the low-temp low-pressure that flows into by suction pipe 1 promptly begins filling from compressor below the compression rotary part that fixedly spool 8 and spinning reel 7 constitute, and after flowing into fixedly the pressing chamber P between the spool 8 and spinning reel 7, be compressed the compression of rotary part and pressurized.Therefore the boil down to basis of above-mentioned compression rotary part is compressed the rotation bottom and has just been formed low pressure area, and the zone of high pressure has just been formed at opposite compression rotation top.Drive motor 2 temperature on every side that is mounted on the compressor low pressure area so then reduces, and has just improved the electric efficiency of drive motor 2.On the contrary, as shown in Figure 3, be in existing traditional screw compressor, the bonding state schematic representation of spinning reel and Ao Haimu ring, main frame, be positioned at the most advanced and sophisticated sealing lead 7b of high temperature compressed chamber P, promptly be mounted on the most advanced and sophisticated sealing lead 7b of the resin material of above-mentioned spinning reel 7 tip end, then can melt because of the high temperature in the above-mentioned pressing chamber P, and cause in the pressing chamber P significant problem such as gas leakage refrigeration agent, but also reduced the efficient of integrating compressor.
For the problem that the low pressure type screw compressor that solves as depicted in figs. 1 and 2 exists, industry once proposed too high pressure type screw compressor.This high pressure type screw compressor (not shown), its gas refrigerant by the low-temp low-pressure that suction pipe 1 flows into promptly begins to fill below the compression rotary part that fixedly spool 8 and spinning reel 7 constitute from compressor, and after flowing into fixedly the pressing chamber P between the spool 8 and spinning reel 7, be not compressed the compression of rotary part and pressurized, but the gas refrigerant by suction pipe (not shown) low-temp low-pressure is fed directly in the pressing chamber (not shown) of the compression rotary part (not shown) that is formed by fixedly spool and spinning reel, simultaneously, the turning effort that is rotated spool adds and is pressed into High Temperature High Pressure, and from extruding mouthful (not shown) to the extrusion of the inside of compressor, compressor all just becomes the zone of high pressure.
Existing traditional high pressure type screw compressor of above-mentioned this spline structure, in order to prevent to be melted because of the most advanced and sophisticated sealing lead 7b of the high temperature in the pressing chamber P, and the problem that exists of the low pressure type screw compressor from pressing chamber P, revealed of gas refrigerant, remove the most advanced and sophisticated sealing lead 7b that is provided with in the tip end of spinning reel 7 is installed, thereby overcome the problem that has low pressure type screw compressor.But having the gas refrigerant that becomes High Temperature High Pressure from the turning effort of spinning reel simultaneously again extrudes to the compressor whole interior from extruding mouth, and these high-temperature gas refrigeration agents have promoted the temperature around the drive motor (not shown), and reduce the great problem of electric efficiency.
And, cause is from the pressure of above-mentioned extrusion mouth to all inner high-temperature gas refrigeration agents that extrudes of compressor, machine oil in the shell (not shown) rises from the oil hole of running shaft (not shown), pressurize to the lower end simultaneously, and above-mentioned high-temperature high-pressure gas refrigerant works also for the spinning reel lower end, and the tip of spinning reel is close to fixedly on the spool fully.When under spinning reel is close to the situation of fixing spool, playing the turning effort of spinning reel, can occur making spinning reel wearing and tearing or damaged significant problem because of the powerful frictional force that produces.
And then also have behind the high-temperature high-pressure gas refrigerant filling compressor inside that above-mentioned extrusion mouth extrudes, from at the blow-off pipe of compressor one side when the outside extrudes, the machine oil of compressor inside disperses because of rotatablely moving of drive motor or live axle, and after being melted by the high-temperature gas refrigeration agent, the significant problem that increases with machine oil extruder outputs such as gas refrigerant extrude.
This shows that above-mentioned existing screw compressor still has many defectives, and demands urgently further being improved.In order to solve the defective of existing screw compressor, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but does not see always that for a long time suitable design finished by development, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing screw compressor exists, the inventor is based on being engaged in this type of product specification manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding a kind of screw compressor of new structure, can improve existing screw compressor, make it have more practicability.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing screw compressor exists, and provide a kind of screw compressor of new structure, technical problem to be solved provides in a kind of most advanced and sophisticated sealing lead of the tip end that is mounted on spinning reel in the structure of removing existing traditional low pressure screw compressor, utilize the middle gas refrigerant of pressing or extruding pressure condition of spinning reel lower end, make spinning reel floating and be close to fixedly on the spool with certain pressure, and in order to form such vortex closed chamber, have the screw compressor of the sheet metal of back pressure control gear by installation, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of screw compressor that the present invention proposes, it comprises: shell; The drive motor that is fixed in above-mentioned enclosure and forms by stator and rotor; By the live axle of above-mentioned drive motor driven rotary; By the rotation of live axle, the rotation lap in lap when for the helical movement, the spinning reel of the refrigeration agent that compression is inhaled into and fixing spool; For the rotation that prevents above-mentioned spinning reel and spinning reel is rotated, on the above and below, form the Ao Haimu ring that is provided with upper and lower key in the said fixing spool; Be arranged on the lower end of spinning reel, and utilize from the intercommunicating pore of above-mentioned spinning reel, extrude in the middle of press or extrude the gas refrigerant of pressure condition, form the sheet metal that makes spinning reel swim in the vortex closed chamber on the fixing spool; Be arranged on the fixed position of above-mentioned sheet metal, and remove the back pressure control gear of above-mentioned vortex closed chamber internal pressure; And support the main body of above-mentioned Ao Haimu ring and sheet metal, spinning reel to form.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid screw compressor, the bi-side of wherein said sheet metal in order to be incorporated into top key with above-mentioned spinning reel, are provided with the keyway of specific length.
Aforesaid screw compressor, the bottom surface of wherein said spinning reel are provided with the circular trough with certain depth that links to each other with above-mentioned intercommunicating pore, and are provided with the circular protrusions with the corresponding combination of above-mentioned circular trough on above-mentioned sheet metal.
Aforesaid screw compressor, the top of the circular protrusions of wherein said sheet metal are installed and are provided with sealing material.
Aforesaid screw compressor, the section shape of wherein said sealing material are the annulars that is " ∏ " shape.
Aforesaid screw compressor, the back pressure control gear of wherein said sheet metal comprises: the cylinder that is connected with vortex closed chamber between above-mentioned spinning reel and the sheet metal; Open and close the valve body of said cylinder inlet; Utilize elastic force to support the spring of above-mentioned valve body; And constitute for the break that prevents the hollow shape that above-mentioned valve body and spring break away from from cylinder.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technological scheme as can be known, in order to reach aforementioned goal of the invention, the invention provides a kind of screw compressor, it has removed the most advanced and sophisticated sealing lead that is mounted on the tip end of spinning reel in the structure that has traditional low pressure screw compressor now, utilize the middle gas refrigerant of pressing or extruding pressure condition of spinning reel lower end simultaneously, make spinning reel floating and be close to fixedly on the spool with certain pressure, and in order to form such vortex closed chamber, installation being provided with has the sheet metal of back pressure control gear, therefore having the advantage of keeping the low pressure screw compressor (improves electric efficiency and prevents that liquid refrigerant from betraying in the pressing chamber, reduce the outer extruder output of Ao Haimu hoop compressor), simultaneously, because the effect of above-mentioned vortex closed chamber makes spinning reel be close to fixedly spool, and preventing that than existing traditional low pressure screw compressor gas refrigerant has the effect of raising in the compressor aspect the leakage.
By the pressurization of the gas refrigerant that extrudes from the vortex closed chamber, spinning reel is close to fixedly on the spool, thereby has prevented the leakage of gas refrigerant pressurized in compressor, and have the effect that can improve the efficient of compressor all sidedly.
By technique scheme, screw compressor of the present invention has following advantage at least:
1, screw compressor of the present invention, it is mounted in the structure of removing existing traditional low pressure screw compressor in the most advanced and sophisticated sealing lead of tip end of spinning reel, press or extrude the gas refrigerant of pressure condition in the middle of utilizing, make spinning reel floating and be close to fixedly on the spool with certain pressure, and in order to form such vortex closed chamber, installation being provided with has the sheet metal of back pressure control gear, therefore in the advantage of keeping the low pressure screw compressor, promptly improve electric efficiency and prevent that liquid refrigerant from betraying in the pressing chamber, when reducing the extruder output outside the Ao Haimu hoop compressor, because of the effect of above-mentioned vortex closed chamber makes spinning reel be close to fixedly spool, therefore preventing that than existing traditional low pressure screw compressor gas refrigerant has the effect of brilliance in the compressor aspect the leakage.
2, the present invention is by the pressurization of the gas refrigerant that extrudes from the vortex closed chamber, spinning reel is close to fixedly on the spool, and prevented the leakage of gas refrigerant pressurized in compressor, so also improved the efficient of compressor all sidedly.
3, the present invention is in order to prevent to be forced into refrigeration agent in the whirlpool closed chamber to external leakage, installation is provided with sealing material and is mounted in the above-mentioned whirlpool closed chamber on above-mentioned sheet metal, but because above-mentioned sealing material is positioned at low voltage section one side of screw compressor, therefore the sealing material (being mounted on the most advanced and sophisticated sealing lead of spinning reel end) that is positioned at pressing chamber unlike existing screw compressor melt or breakage easily, and in can successfully airtight above-mentioned whirlpool closed chamber.
In sum, the screw compressor of special construction of the present invention, utilize the middle gas refrigerant of pressing or extruding pressure condition of spinning reel lower end, make spinning reel floating and be close to fixedly on the spool with certain pressure, and be provided with sheet metal with back pressure control gear, pressurization by the gas refrigerant that extrudes from the vortex closed chamber, spinning reel is close to fixedly on the spool, prevent the leakage of gas refrigerant pressurized in compressor, therefore also improved the efficient of compressor all sidedly.It has above-mentioned many advantages and use value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it all has bigger improvement on the structure of product or function, have technically than much progress, and produced handy and practical effect, and more existing screw compressor has the multinomial effect of enhancement, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the general section of structure that has traditional screw compressor now.
Fig. 2 is in existing traditional screw compressor, shows to be incorporated into the spinning reel and the fixing view of the spinning reel on the spool.
Fig. 3 is in existing traditional screw compressor, the bonding state schematic representation of spinning reel and Ao Haimu ring, main frame.
Fig. 4 is the structural analysis schematic representation according to spinning reel of the present invention and sheet metal, Ao Haimu ring, main body.
Fig. 5 is according to the back side view between spinning reel of the present invention and sheet metal.
Fig. 6 is the view that is arranged on the back pressure control gear of sheet metal according to of the present invention.
Fig. 7 be according to of the present invention in screw compressor the combining structure sectional drawing of main body and Ao Haimu ring, sheet metal, spinning reel.
Fig. 8 is the intercommunicating pore by spinning reel under the bonding state identical with Fig. 7, utilize the gas refrigerant of the middle pressure condition of extrusion in the vortex closed chamber that forms between spinning reel and the sheet metal, make above-mentioned spinning reel floating and be close to the fixedly view of spool.
Fig. 9 is the view of regulating the adjustments of gas refrigerant pressure that extrudes in the vortex closed chamber by the back pressure control gear on the assigned position that is arranged on sheet metal according to the present invention.
1: suction pipe 2: drive motor
3: live axle 5: main body
6: Ao Haimu ring 7,17: spinning reel
7a, 17a: rotation lap 7b: most advanced and sophisticated sealing lead
7c, 17c: keyway 8: fixing spool
9: extrude mouth 10: safety check
11: delivery chamber 12: the top barrier film
14: blow-off pipe 15: shell
17d: intercommunicating pore 17e: circular trough
20: sheet metal 21: keyway
22: circular protrusions 23: the sealing material connecting groove
25: vortex closed chamber 30: sealing material
40: back pressure control gear 41: circuitous hole
42: cylinder 43: valve body
44: spring 45: break
46: mesopore
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its concrete structure of screw compressor, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
See also Fig. 4, Fig. 5 and shown in Figure 6, Fig. 4 is the structural analysis schematic representation according to spinning reel of the present invention and sheet metal, Ao Haimu ring, main body, Fig. 5 is according to the back side view between spinning reel of the present invention and sheet metal, and Fig. 6 is the view that is arranged on the back pressure control gear of sheet metal according to of the present invention.
Screw compressor of the present invention, it is by shell 15, the drive motor 2 that is fixed in above-mentioned shell 15 inside and forms by stator 2a and rotor 2b, by the live axle 3 of above-mentioned drive motor 2 driven rotary, the spinning reel 17 of the rotation lap 17a refrigeration agent that the rotation compression by live axle 3 is inhaled into when for the helical movement in lap 8a and fixing spool 8, for the rotation that prevents above-mentioned spinning reel 17 and allow this spinning reel 17 encircle 6 in said fixing spool 8 inward turnings then forming the Ao Haimu that is provided with key 6a and following key 6b on the top and bottom, be arranged on the lower end of spinning reel 17 and utilize the middle gas refrigerant of pressing or extruding pressure condition that from the intercommunicating pore 17d of above-mentioned spinning reel 17, extrudes, formation makes spinning reel 17 swim in the sheet metal 20 of the vortex closed chamber 25 on the fixing spool 8, be arranged on the fixed position of above-mentioned sheet metal 20 and remove the back pressure control gear 40 of above-mentioned vortex closed chamber 25 internal pressures, support the above-mentioned Ao Haimu ring 6 and the main body 5 of sheet metal 20 and spinning reel 17 etc. to form.
Below, screw compressor according to the present invention is described in detail.
Screw compressor of the present invention, in the advantage that keeps low pressure type screw compressor, for spinning reel 17 is close to fixedly on the spool 8 by extruding gas refrigerant in vortex closed chamber 25, and cut off from the leakage of the gas refrigerant of pressing chamber P, and improve effect than existing traditional low pressure type screw compressor, so in the present invention, removed the most advanced and sophisticated sealing lead 7b that is arranged on tip end that is mounted on spinning reel 7 in the structure that has traditional low pressure screw compressor now, simultaneously, on spinning reel 17 lower ends of the most advanced and sophisticated sealing lead 7b that is removed, press or extrude the gas refrigerant of pressure condition in the middle of utilizing, make spinning reel 17 usefulness certain pressures floating and be close to fixedly on the spool 8, and in order to form such vortex closed chamber, installation is provided with the sheet metal with back pressure control gear, and technical conceive describes the present invention in detail according to this below.Same structure between the present invention and the above-mentioned existing traditional compressor is to use unified symbol.
See also Fig. 1, Fig. 4 and shown in Figure 5, according to screw compressor of the present invention, it is by shell 15, be fixed in the inside of above-mentioned shell 15 and the drive motor of being formed by stator 2a and rotor 2b 2, by the live axle 3 of above-mentioned drive motor 2 driven rotary, the spinning reel 17 of the rotation lap 17a refrigeration agent that the rotation compression by live axle 3 is inhaled into when for the helical movement in lap 8a and fixing spool 8, for the rotation that prevents above-mentioned spinning reel 17 and allow spinning reel 17 in said fixing spool 8 inward turnings then in the above with following on form the Ao Haimu that is provided with key 6a and following key 6b and encircle 6, be arranged on the lower end of spinning reel 17 and utilize the middle gas refrigerant of pressing or extruding pressure condition that from the intercommunicating pore 17d of above-mentioned spinning reel 17, extrudes, formation makes spinning reel 17 swim in the sheet metal 20 of the vortex closed chamber 25 on the fixing spool 8, be arranged on the fixed position of above-mentioned sheet metal 20 and remove the back pressure control gear 40 of above-mentioned vortex closed chamber 25 internal pressures, and support the main body 5 of above-mentioned Ao Haimu ring 6 and sheet metal 20 and spinning reel 17 etc. to form.
At this moment, above-mentioned spinning reel 17, in order to solve the problem that existing traditional low pressure type screw compressor exists, promptly make the problem that most advanced and sophisticated sealing lead 7b is melted because of the high temperature in the compressor P, adopted the spinning reel of removing most advanced and sophisticated sealing lead 7b 7 structures with high pressure type compressor one spline structure, like this, just can be the same with high pressure type screw compressor, can prevent that gas refrigerant from leaking from pressing chamber P, thereby can improve the reliability of equipment.
In addition, below spinning reel 17, on the both sides, combine with the top key 6a of above-mentioned Ao Haimu ring 6, and, form the keyway 17c that is provided with fixed length in order to ensure moving linearly on the upper end of Ao Haimu ring 6; Particularly be arranged on the sheet metal 20 of spinning reel 17 lower ends,, on the both sides of above-mentioned sheet metal 20, form the keyway 21 that is provided with fixed length in order to ensure combining with the top key 6a of above-mentioned Ao Haimu ring 6 together with spinning reel 17; Form for both sides below above-mentioned spinning reel 17 and above-mentioned sheet metal both sides and to be provided with keyway 17c and 21, in order to ensure with the identical straight line motion of spinning reel 17 in the upper end of above-mentioned Ao Haimu ring 6, form identical length.
Moreover, in order to form the vortex closed chamber 25 that makes above-mentioned spinning reel 17 floating, the middle gas refrigerant of pressing or extruding pressure condition that utilization extrudes from the intercommunicating pore 17d of above-mentioned spinning reel 17, below above-mentioned spinning reel 17, form and be provided with the circular trough 17e that is connected with above-mentioned intercommunicating pore 17d with constant depth; On above-mentioned sheet metal 20, form the circular protrusions 22 that is provided with the corresponding combination of above-mentioned circular trough 17e.
Further, for the leakage of the gas refrigerant that prevents from vortex closed chamber 25, to extrude from above-mentioned intercommunicating pore 17d, on the top of the circular protrusions 22 of above-mentioned sheet metal 20, install and be provided with sealing material 30; Sealing material 30 is to adhere on the sealing material connecting groove 23 that is arranged on the circumferential surface that is formed on above-mentioned circular protrusions 22, and it is removable to do the time spent at gas refrigerant.
Simultaneously, above-mentioned sealing material 30 is to be made by the good resin material of resistance to heat, and it is the ring-type that section shape is " ∏ " state.
In addition, see also shown in Figure 6ly, be arranged on the back pressure control gear 40 of the fixed position of above-mentioned sheet metal 20, it is by the cylinder 42 that is connected with vortex closed chamber 25 between above-mentioned spinning reel 17 and the sheet metal 20; Be inserted in said cylinder 42 and the pressure of the gas refrigerant that in vortex closed chamber 25, extrudes from above-mentioned intercommunicating pore 17d in order to ensure conciliation, open and close the valve body 43 of said cylinder 42 inlets; Utilize elastic force to support the spring 44 of above-mentioned valve body 43; And constitute for the break 45 that prevents the hollow shape that above-mentioned valve body 43 and spring 44 break away from from cylinder 42.
At this moment, the pressure that is forced into the gas refrigerant in the vortex closed chamber 25 is that the pressure in the vortex closed chamber 25 is to suck constant pressure+α (sectional area in the power of spring 44/circuitous hole 41), use above-mentioned back pressure control gear 40 to adjust pressure in the vortex closed chamber 25, not to press in order to control certain centre, but in order to reconcile the required pressure of suction constant pressure+α.
Simultaneously, above-mentioned cylinder 42 is connected with vortex closed chamber 25 by circuitous hole 41.
Secondly, above-mentioned valve body 43, in order to open and close the inlet of said cylinder 42, it is to be made of taper shape or sphere.
Now the cohesive process of the main body of the screw compressor of above-mentioned this spline structure and Ao Haimu ring, sheet metal, spinning reel and the cohesive process that is arranged on the back pressure control gear of above-mentioned sheet metal fixed position are described as follows:
See also shown in Figure 7, be the main body of screw compressor of the present invention and Ao Haimu ring, sheet metal and spinning reel in conjunction with sectional drawing.
At first, explanation is as the cohesive process of main body 5 and Ao Haimu ring 6, sheet metal 20, spinning reel 17, it is main body 5 upper ends that Ao Haimu ring 6 are mounted on thrust-bearing 5b, at this moment Ao Haimu ring 6 is in order to ensure being the forward and backward straight line motion of standard with aforementioned body 5, on the keyway 5 that forms on the circumferential surface of main body 5, the bottom key 6b of above-mentioned Ao Haimu ring 6 with the state of combination separately be mounted on above-mentioned thrust-bearing 5b below.
Afterwards, there is the sheet metal 20 of keyway 21 to be arranged on the upper end of main body 5 of Ao Haimu ring 6 on the both sides.At this moment, above-mentioned sheet metal 20, on the top key 6a of Ao Haimu ring 6, with the state that combines with keyway 21, the thrust-bearing 5b of stack and main body goes up and installs.In the upper end of stack, install spinning reel 17 is set with the sheet metal 20 of the thrust-bearing 5b of main body 5.
Now the cohesive process between above-mentioned sheet metal 20 and the spinning reel 17 is described as follows: on the bottom surface of above-mentioned spinning reel 17, the circular protrusions 22 corresponding combinations of the circular trough 17e of constant depth and above-mentioned sheet metal 20 upper ends, and the keyway 17c of both sides combines below a top key 6a of the Ao Haimu that combines with the keyway 21 of above-mentioned sheet metal 20 both sides ring 6 and the above-mentioned spinning reel 17, has therefore finished the cohesive process between aforementioned body 5 and Ao Haimu ring 6, sheet metal 20, the spinning reel 17.At this moment, formed the vortex closed chamber 25 that on the circular trough 17e of above-mentioned spinning reel 17, combines between above-mentioned sheet metal 20 and the spinning reel 17, promptly with the vortex closed chamber 25 that is connected at the above-mentioned spinning reel 17 central intercommunicating pore 17d that form with the circular protrusions 22 of sheet metal 20.In above-mentioned vortex closed chamber 25, the sealing material 30 that is provided with on circular protrusions 22 circumferential surfacies of sheet metal 20 is installed.
Secondly, the cohesive process of back pressure control gear 40 of fixed position that is arranged on above-mentioned sheet metal 20 is as follows: the gas refrigerant that extrudes in vortex closed chamber 25 in order to ensure the intercommunicating pore 17d from above-mentioned spinning reel 17 is adjusted to presses in the middle of certain, valve body 43 is inserted in the cylinder 42 that is connected with vortex closed chamber 25 by above-mentioned circuitous hole 41; For the elastic force backward by above-mentioned valve body 43 is supported valve body 43, insert spring 44; In order to prevent that above-mentioned valve body 43 and spring 44 break away from from above-mentioned cylinder, on the extrusion end of said cylinder 42, the break 45 that is provided with hollow shape is installed; This break 45 is by the mode of structure of forcing to entangle or from break 45 rears the mode that the fixing clamp (not shown) inserts to the bottom from the top of break to be entangled.
Now under the situation of above-mentioned such combination, utilization is pressed from spinning reel 17 and the middle of vortex closed chamber 25 inner refrigerants in the middle of the sheet metal 20 that above-mentioned intercommunicating pore 17d extrudes, make above-mentioned spinning reel 17 floating and be close to the fixedly effect of spool 8, promptly when the refrigerant pressure in the above-mentioned vortex closed chamber 25 that extrudes became high pressure, the Action Specification of regulating refrigerant pressure with back pressure control gear 40 was as follows:
See also Fig. 7, shown in Figure 8, utilize in the spinning reel 17 that extrudes from intercommunicating pore 17d and the vortex closed chamber 25 in the middle of the sheet metal 20 in the middle of the refrigeration agent of pressure conditions, make above-mentioned spinning reel 17 floating and be close to the fixedly state of spool 8; See also shown in Figure 9ly, regulate the gas refrigerant pressure status that in vortex closed chamber 25, extrudes by the back pressure control gear 40 that is arranged on sheet metal 20 fixed positions according to the present invention.
See also shown in Figure 7ly, when connecting power supply, by the driving of drive motor 2, centrifugal 3a of live axle 3 and live axle begins rotation, and spinning reel 17 motion that begins to spin in fixing spool 8; The compression (as shown in Figure 2) of the spiral motion by above-mentioned spinning reel 17, the gas refrigerant of low-temp low-pressure is pressurized to High Temperature High Pressure; As above-mentioned, in the pressure process of gas refrigerant, the gas refrigerant of middle pressure condition is forced into from the intercommunicating pore 17d on the spinning reel 17 in the vortex closed chamber 25 that is arranged between above-mentioned spinning reel 17 and the sheet metal 20, in the vortex closed chamber 25 that the circular trough 17e of promptly above-mentioned spinning reel 17 circular protrusions 22 last and sheet metal 20 is combined into; Because extrude the gas refrigerant in above-mentioned vortex closed chamber 25, above-mentioned spinning reel 17 floats to level altitude and is close to fixedly on the spool 8, and above-mentioned sheet metal 20 is close on the thrust-bearing 5b of aforementioned body 5.
Now be forced out the gas refrigerant of the middle pressure condition in above-mentioned vortex closed chamber 25, the floating state more detailed description of spinning reel 17 is as follows:
See also shown in Figure 8, when the intercommunicating pore 17d of gas refrigerant from spinning reel 17 of middle pressure condition is forced in the vortex closed chamber 25, gas refrigerant is to the sealing material 30 that is arranged on vortex closed chamber 25, promptly be arranged on pressurization on the sealing material 30 on circular protrusions 22 circumferential surfacies of above-mentioned sheet metal 20, above-mentioned sealing material 30 is floated to the outer circumferential face direction of the sealing material connecting groove 23 of circular protrusions 22, simultaneously, sealing material 30 a part of gas refrigerant of being begun to act on by lower end and rising from above-mentioned sealing material 30; And the shape of " ∏ " on the section of above-mentioned sealing material 30 is begun to diverge to by the gas refrigerant of another part, and above-mentioned spinning reel 17 is floated to the fixing direction of spool 8.Same as described above, because of the floating effect of spinning reel 17, the tip end of spinning reel 17 is close on the said fixing spool 8.Therefore solved that existing traditional low pressure type screw compressor exists among Fig. 1 problem, promptly because of the high temperature in the compressor P, make the problem that most advanced and sophisticated sealing lead 7b is melted.Simultaneously, the present invention also has the advantage of screw compressor in the time of can preventing existing conventional high-tension that gas refrigerant leaks in pressing chamber P, thereby has improved reliability.But, when the gas refrigerant of extrusion in above-mentioned vortex closed chamber 25 surpasses middle the pressure,, above-mentioned spinning reel 17 is floated in order to regulate the pressure of the gas refrigerant in the above-mentioned vortex closed chamber 25, back pressure control gear 40 begins driving.
Now the driving procedure declaration with above-mentioned back pressure control gear 40 is as follows: identical with above-mentioned explanation, when surpassing middle the pressure to the vortex closed chamber 25 inner gas refrigerants that extrude, and when making spinning reel 17 floating, the gas refrigerant that begins to act on from above-mentioned spinning reel 17 lower ends forms the high pressure more than middle the pressure, promptly sucks constant pressure+α (sectional area in the power of spring 44/circuitous hole 41).So, when by above-mentioned high-pressure gas refrigerant effect spinning reel 17 when fixedly spool 8 directions are floated, because of the cause of high pressure, the spinning reel 17 and fixedly frictional force between the spool 8 and rubbing action increase.In order to prevent this spinning reel 17 and the fixedly breakage of spool 8, the back pressure control gear 40 of the fixed position by being arranged on above-mentioned sheet metal 20 is regulated the pressure that extrudes at above-mentioned vortex closed chamber 25 gas inside refrigeration agents.
Now the gas refrigerant pressure adjustment process by back pressure control gear 40 is described as follows:
Above (gas refrigerant that sucks constant pressure+α) is during to the vortex closed chamber 25 inner extrusion that are formed between above-mentioned spinning reel 17 and the sheet metal 20 when press the centre, as shown in Figure 9, it is the view of regulating the adjustments of gas refrigerant pressure that extrudes in the vortex closed chamber by the back pressure control gear on the assigned position that is arranged on sheet metal according to the present invention, above-mentioned gas refrigerant is by connecting the circuitous hole 41 of formation for the cylinder 42 that makes vortex closed chamber 25 and back pressure control gear 40 is interconnected, the valve body 43 of blocking said cylinder 42 inlets is given in pressurization, and flow in the open cylinder 42, and the mesopore 46 of the break 45 by being arranged on said cylinder 42 extrusion face ends, suction chamber direction to compressor extrudes, therefore, above-mentioned vortex closed chamber 25 gas inside refrigeration agents are adjusted to the required pressure of suction constant pressure+α (sectional area in the power of spring 44/circuitous hole 41).
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (6)
1, a kind of screw compressor is characterized in that it comprises:
Shell;
The drive motor that is fixed in above-mentioned enclosure and forms by stator and rotor;
By the live axle of above-mentioned drive motor driven rotary;
By the rotation of live axle, the rotation lap in lap when for the helical movement, the spinning reel of the refrigeration agent that compression is inhaled into and fixing spool;
For the rotation that prevents above-mentioned spinning reel and spinning reel is rotated, on the above and below, form the Ao Haimu ring that is provided with upper and lower key in the said fixing spool;
Be arranged on the lower end of spinning reel, and utilize from the intercommunicating pore of above-mentioned spinning reel, extrude in the middle of press or extrude the gas refrigerant of pressure condition, form the sheet metal that makes spinning reel swim in the vortex closed chamber on the fixing spool;
Be arranged on the fixed position of above-mentioned sheet metal, and remove the back pressure control gear of above-mentioned vortex closed chamber internal pressure; And
Support the main body of above-mentioned Ao Haimu ring and sheet metal, spinning reel to form.
2, screw compressor according to claim 1 is characterized in that the bi-side of wherein said sheet metal in order to be incorporated into top key with above-mentioned spinning reel, being provided with the keyway of specific length.
3, screw compressor according to claim 1 and 2, the bottom surface that it is characterized in that wherein said spinning reel is provided with the circular trough with certain depth that links to each other with above-mentioned intercommunicating pore, and is provided with the circular protrusions with the corresponding combination of above-mentioned circular trough on above-mentioned sheet metal.
4, screw compressor according to claim 1 and 2 is characterized in that the top installation of the circular protrusions of wherein said sheet metal is provided with sealing material.
5, screw compressor according to claim 4, the section shape that it is characterized in that wherein said sealing material are the annulars that is " ∏ " shape.
6, screw compressor according to claim 1 is characterized in that the back pressure control gear of wherein said sheet metal comprises:
The cylinder that is connected with vortex closed chamber between above-mentioned spinning reel and the sheet metal;
Open and close the valve body of said cylinder inlet;
Utilize elastic force to support the spring of above-mentioned valve body; And
For the break that prevents the hollow shape that above-mentioned valve body and spring break away from from cylinder constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100375600A CN100494683C (en) | 2004-04-28 | 2004-04-28 | Screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100375600A CN100494683C (en) | 2004-04-28 | 2004-04-28 | Screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690434A true CN1690434A (en) | 2005-11-02 |
| CN100494683C CN100494683C (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100375600A Expired - Fee Related CN100494683C (en) | 2004-04-28 | 2004-04-28 | Screw compressor |
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| CN (1) | CN100494683C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260884B (en) * | 2007-03-06 | 2012-11-07 | Lg电子株式会社 | Compressor |
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2004
- 2004-04-28 CN CNB2004100375600A patent/CN100494683C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260884B (en) * | 2007-03-06 | 2012-11-07 | Lg电子株式会社 | Compressor |
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| Publication number | Publication date |
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| CN100494683C (en) | 2009-06-03 |
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