CN2821229Y - Over compression preventer of rotary compressor - Google Patents
Over compression preventer of rotary compressor Download PDFInfo
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- CN2821229Y CN2821229Y CN 200520113508 CN200520113508U CN2821229Y CN 2821229 Y CN2821229 Y CN 2821229Y CN 200520113508 CN200520113508 CN 200520113508 CN 200520113508 U CN200520113508 U CN 200520113508U CN 2821229 Y CN2821229 Y CN 2821229Y
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- plunger
- rotary compressor
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Abstract
The utility model relates to an over compression prevention device for a rotary compressor, which comprises a cylinder, a rotary shaft, a plunger piston and a sliding liner, wherein the cylinder is fixedly arranged in a shell and the interior of the cylinder is provided with a damper which forms rectilinear motion along the radius direction and divides inner space into suction space and compression space. The rotary shaft is combined with a motor part which is arranged in the shell and is used for generating driving force, and penetrates through the cylinder; a centrifugal part is formed on one side of the rotary shaft, and in order to make the rotary shaft arranged in the cylinder, the centrifugal part forms a rotary hanging and connecting surface on the peripheral surface of the rotary shaft. The plunger piston is combined to the centrifugal part of the rotary shaft and is in contact with the inner diameter of the cylinder. The sliding liner is arranged between the centrifugal part and the plunger piston in a mode that the sliding liner can slide correspondingly to the centrifugal part along the radius direction of the plunger piston, and the sliding liner forms a rotary hanging and connecting surface for limiting the corresponding rotation on the surface where the sliding liner is in contact with the rotary hanging and connecting surface of the centrifugal part.
Description
Technical field
The utility model relates to a kind of anti-locking apparatus of excess compression of rotary compressor, particularly relate to a kind ofly by preventing the efficient that the phenomenon that refrigerant is carried out excess compression improves compressor, and reduce the anti-locking apparatus of excess compression of the rotary compressor of the wearing and tearing that produce along with the increase of load with this.
Background technique
Usually, the rotary compressor of uses such as air-conditioning is meant, the running shaft that forms as one with motor section and centrifugal combination of plunger of compressor section, in the process by above-mentioned plunger turning motion within circular cylinder, suck cold media air and it is compressed after the equipment of output.
See also illustrated in figures 1 and 2ly, Fig. 1 carries out illustrated longitdinal cross-section diagram to the structure of existing rotary compressor, and Fig. 2 is in existing rotary compressor, and the structure of compressor section is carried out illustrated oblique drawing.
As shown in Figure 1, existing rotary compressor comprises the shell 11 that is filled with a certain amount of machine oil; Be installed on above-mentioned shell 1 inside, be used to produce the motor section of driving force; Be installed on above-mentioned shell 1 inside, carry out compressor for compressing portion by the dynamically working of reception motor section transmission and to cold media air.
At above-mentioned shell 1 upper lateral part the output tube DP that runs through shell 1 wall is installed, and the suction pipe SP that is communicated with and runs through shell 1 wall with compressor section is installed in the side, lower side of shell 1.
Above-mentioned motor section comprises stator 2, rotor 3 and is pressed into the running shaft 4 that is attached to above-mentioned rotor 3 centers, and the lower side of above-mentioned running shaft 4 is equipped with compressor section.
Above-mentioned compressor portion comprises the cylinder 5 of the circle that is fixed in shell 1 inner peripheral surface and is communicated with suction pipe SP; Close attachment is in the bi-side of above-mentioned cylinder 5, and running shaft 4 runs through and the 1st bearing 6A and the 2nd bearing 6B excessively; Be incorporated into centrifugal 4b of above-mentioned running shaft 4, the plunger 7 that carries out centrifugal rotation in cylinder 5 inside; Be crimped onto the outer circumferential face of above-mentioned plunger 7, and when plunger 7 is made turning motion, carry out straight line motion, above-mentioned cylinder 5 is divided into the air throttle 20 that sucks space and compression volume.
Above-mentioned running shaft 4 inside have the long oil passageway 4a that runs through formation along axle direction, and said engine oil passage 4a below has and is used for machine oil feeder (not marking among the figure) that the machine oil that is filled into shell 1 is aspirated.
In addition, in the outside of above-mentioned rotary compressor, be equipped with and be used to suck the vaporous refrigerant (accumulator 30 (accumulator) of the refrigerant of gaseous state.
In the unaccounted in the drawings symbol, 16a is a delivery outlet, and 18 is delivery valve, and 19 are the output silencing apparatus, and S is the air throttle spring.
Below, the work of the existing rotary compressor of structure is as mentioned above described.
When to said stator 2 loading powers, rotor 3 will be rotated in stator 2 inside.Meanwhile, running shaft 4 will begin rotation and make rotary-piston 7 carry out centrifugal rotation in cylinder 5 inside.Along with above-mentioned rotary-piston 7 carries out centrifugal rotation, vaporous cold media air will be inhaled into the suction space of cylinder 5, continued to be compressed to certain pressure then, and the pressure of working as the compression volume of above-mentioned cylinder 5 inside surpasses critical pressure, the moment that promptly is higher than shell 1 pressure inside, the delivery valve 8 that is installed among above-mentioned the 1st bearing 6A will be unlocked, and by delivery outlet 6a the cold media air in the compression volume be outputed to shell 1 inside.The above-mentioned cold media air that is output moves up by the slit between the slit between shell 1 and the stator 2 or stator 2 and the rotor 3, is discharged to refrigerating circulation system (not marking among the figure) by output tube DP at last.
But in existing rotary compressor, when after cold media air is compressed along with the rotation of plunger 7, exporting, thereby can produce the efficient that the excess compression phenomenon reduces compressor, and bring out the problems such as wearing and tearing that cause because of the increase of load and occur.
Promptly, when ultrahigh pressure cold media air or aqueous refrigerant flow into the suction space of above-mentioned cylinder 5, plunger 7 still can carry out certain compression to its cold media air, the excess compression phenomenon of cold media air can appear in this moment, thereby the gas pressure of output will increase the efficient that reduces compressor and increase its load, and therefore bring out problems such as the wearing and tearing appearance of each parts.
This shows that the anti-locking apparatus of the excess compression of above-mentioned existing rotary compressor obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.Problem for the anti-locking apparatus existence of the excess compression that solves rotary compressor, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that the anti-locking apparatus of the excess compression of above-mentioned existing rotary compressor exists, the utility model people is based on being engaged in this type of product specification manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of the anti-locking apparatus of the excess compression of the rotary compressor of founding a kind of new structure, can improve the anti-locking apparatus of excess compression of general existing rotary compressor, make it have more practicability.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.
Summary of the invention
Main purpose of the present utility model is, overcome the defective of the anti-locking apparatus existence of excess compression of existing rotary compressor, and the excess compression that a kind of rotary compressor of new structure is provided is prevented locking apparatus, technical problem to be solved is to make it by preventing the efficient that the phenomenon that refrigerant is carried out excess compression improves compressor, and reduce the wearing and tearing that produce, thereby be suitable for practicality more along with the increase of load with this.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.According to the anti-locking apparatus of the excess compression of a kind of rotary compressor that the utility model proposes, it comprises and is fixedly mounted on enclosure, and its inside has along the radial direction moving linearly and the inner space divided into the cylinder of the air throttle that sucks space and compression volume; Combine with the motor section that is installed in above-mentioned enclosure and is used to produce driving force, connect said cylinder, and form in order to be installed in said cylinder inner and form the running shaft of the centrifugal portion of rotation mount surface at its outer circumferential face in the one side; Be incorporated into centrifugal of above-mentioned running shaft and contact the plunger of mobile cold media air in the process of carrying out centrifugal rotation with the internal diameter of above-mentioned cylinder; In order to make above-mentioned plunger optionally away from the internal diameter of said cylinder, and make the cold media air that in the compression volume of said cylinder, compresses flow into the suction space, by can being installed on along the mode that the direction of the radius of above-mentioned plunger is slided with respect to above-mentioned centrifugal portion between above-mentioned centrifugal and the above-mentioned plunger, and forming the slide bushing of the rotation mount surface that can limit relative rotation with the contacted surface of contact of the rotation mount surface of above-mentioned centrifugal portion.In addition, also comprise and be installed between above-mentioned slide bushing and the above-mentioned centrifugal portion, apply the elastomer of elastic force at above-mentioned plunger to the approaching direction of the internal diameter of above-mentioned cylinder.Simultaneously, above-mentioned elastomer and above-mentioned slide bushing form as one.
By technique scheme, the anti-locking apparatus of the excess compression of the utility model rotary compressor has following advantage at least:
Utilize to be suitable for the anti-locking apparatus of excess compression of rotary compressor of the present utility model, can to prevent refrigerant is carried out the phenomenon of excess compression and improves the efficient of compressor, and reduce the wearing and tearing that produce along with the increase of load with this.
In sum, the excess compression of the rotary compressor of the utility model special construction is prevented locking apparatus, it can be by preventing the efficient that the phenomenon that refrigerant is carried out excess compression improves compressor, and reduce the wearing and tearing that produce along with the increase of load with this, thereby be suitable for practicality more.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 structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and the anti-locking apparatus of the excess compression of more existing rotary compressor has the multinomial effect of enhancement, thereby 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 solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 carries out illustrated longitdinal cross-section diagram to the structure of existing rotary compressor.
Fig. 2 is in existing rotary compressor, and the structure of compressor section is carried out illustrated oblique drawing.
Fig. 3 carries out illustrated longitdinal cross-section diagram to being suitable for the structure with rotary compressor of the anti-locking apparatus of excess compression of the present utility model.
Fig. 4 is in being suitable for the rotary compressor with the anti-locking apparatus of excess compression of the present utility model, and the structure of compressor section is carried out illustrated oblique drawing.
Fig. 5 carries out illustrated separation oblique drawing to the structure that is suitable for the anti-locking apparatus of excess compression of the present utility model.
Fig. 6 carries out illustrated planimetric map to the working state that is suitable for the anti-locking apparatus of excess compression of the present utility model.
Fig. 7 is suitable for the pressure-volume curve figure that excess compression is prevented the cold media air that the rotary compressor of locking apparatus is exported that has of the present utility model.
111: shell 112: stator
113: rotor 114: running shaft
114b: centrifugal 114c, 123c: rotation mount surface
115: vapour 116A, 116B: bearing
117: plunger 120: air throttle
123: slide bushing 125: elastomer
130: accumulator (accumulator)
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined model utility purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to anti-its embodiment of locking apparatus of the excess compression of the rotary compressor that the utility model proposes, structure, feature and effect thereof, describe in detail as after.
See also Fig. 3 to shown in Figure 7, Fig. 3 carries out illustrated longitdinal cross-section diagram to being suitable for the structure with rotary compressor of the anti-locking apparatus of excess compression of the present utility model.And Fig. 4 is in being suitable for the rotary compressor with the anti-locking apparatus of excess compression of the present utility model, and the structure of compressor section is carried out illustrated oblique drawing; Fig. 5 carries out illustrated separation oblique drawing to the structure that is suitable for the anti-locking apparatus of excess compression of the present utility model; Fig. 6 carries out illustrated planimetric map to the working state that is suitable for the anti-locking apparatus of excess compression of the present utility model.In addition, Fig. 7 is suitable for the pressure-volume curve figure that excess compression is prevented the cold media air that the rotary compressor of locking apparatus is exported that has of the present utility model.
In the process that the utility model is described,, will omit knowing the detailed description of function and structure altogether in order to make main idea of the present utility model clearer and more definite.
See also Fig. 3 to shown in Figure 5, be suitable for the rotary compressor with the anti-locking apparatus of excess compression of the present utility model, comprise that inside is filled with the shell 11 of a certain amount of machine oil; Be fixedly mounted on shell 11 inside, and its inside has centrifugal rotation that the plunger 17 along with follow-up explanation carries out along the radial direction moving linearly and the inner space is divided into the cylinder 15 of the air throttle 20 that sucks SPACE V 1 and compression volume V2; Close attachment is in the bi-side of above-mentioned cylinder 15, and the running shaft 14 of follow-up explanation runs through and the 1st bearing 16A and the 2nd bearing 16B excessively; Combine with being installed in above-mentioned shell 11 motor section inner and that be used to produce driving force, connect said cylinder 15, and form in order to be installed in said cylinder 15 inner and form the running shaft 14 of centrifugal 14b of rotation mount surface at its outer circumferential face in the one side; Be incorporated into centrifugal 14b of above-mentioned running shaft 14 and contact with the internal diameter of above-mentioned cylinder 15, mobile cold media air and in the process of carrying out centrifugal rotation optionally away from the internal diameter of said cylinder, for can flowing out to, the cold media air that compresses among the compression volume V2 that makes cylinder 15 sucks SPACE V 1, with can be with respect to go forward side by side the relatively plunger 17 of mode combination of motion of centrifugal 14b.
At above-mentioned shell 11 upper lateral parts the output tube DP that runs through shell 11 walls is installed, and the suction pipe SP that is communicated with and runs through shell 11 walls with cylinder 15 is installed in the side, lower side of shell 11.
Above-mentioned motor section is made of stator 12, rotor 13, and running shaft 14 is pressed into the center that is attached to above-mentioned rotor 13.
Above-mentioned running shaft 14 inside have along the long oil passageway 14a that axially runs through, and said engine oil passage 14a below has and is used for machine oil feeder (not marking among the figure) that the machine oil that is filled into shell 11 is aspirated.
Simultaneously, above-mentioned plunger 17 utilizes can be according to the cold media air excess compression among the compression volume V2 of cylinder 15 whether with respect to go forward side by side the relatively mode combination of motion of centrifugal 14b, therefore between centrifugal 14b and plunger 17, forming along the radial direction of plunger 17 can be with respect to centrifugal 14b relative to sliding the slide bushing 23 that moves.
Above-mentioned slide bushing 23 be installed in centrifugal 14 and plunger 17 between, form around the part around centrifugal the 14b with " ㄈ " shape of a side opening, and can move relative to sliding with respect to centrifugal 14b along its opening direction.
Simultaneously, above-mentioned slide bushing 23 is in contact with one another in the face with centrifugal 14b's, forms mutually respectively and also can limit its counterrotating rotation mount surface 23a, 114c towards contact.
In addition,, have and be installed between above-mentioned slide bushing 23 and centrifugal the 14b, be used for applying to the direction of the internal diameter contact of cylinder 15 elastomer 25 of elastic force at plunger 17 at the inner side surface of above-mentioned slide bushing 23.Above-mentioned elastomer 25 makes plunger 17 carry out centrifugal rotation under the state that touches cylinder 15 internal diameters by applying elastic force when cold media air is compressed with normal state, prevents that the cold media air among the compression volume V2 from leaking in the suction SPACE V 1.
In addition, also can utilize spring members (not marking among the figure) such as plate-shaped springs to replace above-mentioned elastomer 25.
In addition, the outside of above-mentioned rotary compressor is equipped with the accumulator (accumulator) 30 that is used to suck vaporous refrigerant (refrigerant of gaseous state).
In the unaccounted in the drawings symbol, 116a is a delivery outlet, and 118 is delivery valve, and 119 are the output silencing apparatus, and S is the air throttle spring.
Below, the work of the suitable rotary compressor of the present utility model of structure is as mentioned above described.
When to said stator 12 loading powers, rotor 13 will be rotated in stator 12 inside.Meanwhile, running shaft 14 will begin rotation and make rotary-piston 17 carry out centrifugal rotation in cylinder 15 inside.Along with above-mentioned rotary-piston 17 carries out centrifugal rotation, vaporous cold media air will be inhaled into the suction space of cylinder 15, continued to be compressed to certain pressure then, and the pressure of working as the compression volume of above-mentioned cylinder 15 inside surpasses critical pressure, the moment that promptly is higher than shell 11 pressure inside, the delivery valve 18 that is installed among above-mentioned the 1st bearing 16A will be unlocked, and by delivery outlet 16a the cold media air among the compression volume V2 be outputed to shell 11 inside.The above-mentioned cold media air that is output moves up by the slit between the slit between shell 11 and the stator 12 or stator 12 and the rotor 13, is discharged to refrigerating circulation system (not marking among the figure) by output tube DP at last.
In the normal compression process of aforesaid compressor, shown in (a) among Fig. 6, plunger 17 will carry out centrifugal rotation and mobile cold media air under the state that touches cylinder 15 internal diameters.
And in the process that the cooled coal gas body is compressed, reach certain pressure among the compression volume V2 when above, promptly because ultrahigh pressure cold media air or liquid refrigerants to flow into the suction SPACE V 1 of cylinder 15 etc. former thereby when producing cold media air and being taken place by the phenomenon of excess compression, shown in (b) among Fig. 6, plunger 17 will be according to its pressure with respect to centrifugal the 14b motion of going forward side by side relatively, with respect to the internal diameter of cylinder 15 away from certain distance.At this moment, the part in the cold media air among the compression volume V2 will flow out to and suck SPACE V 1, thereby prevent that cold media air from being taken place by the phenomenon of excess compression.
That is, elastomer 25 is by the compressed while of pressure of compression volume V2, and slide bushing 23 will carry out slide relative with respect to centrifugal 14b along the radial direction of plunger 17, thus make plunger 17 with respect to the internal diameter of cylinder 15 away from certain distance.
And after aforesaid excess compression state is disengaged, plunger 17 will be by the elastic force of elastomer 25, the process of contrary is carried out the relative motion of going forward side by side with respect to centrifugal 14b by with the excess compression state time, thereby returns to the internal diameter position contacting with cylinder 15.
Wherein, above-mentioned plunger 17 beginnings can utilize according to the capacity and the operating conditions of compressor and select for use the method for the elastomer 25 with suitable elastic force to control away from the time of the internal diameter of cylinder 15.
Aforesaid the utility model can prevent that cold media air from being taken place by the phenomenon of excess compression, and as shown in Figure 7, press by the output of the cold media air exported among the compression volume V2 that makes cylinder 15 to keep pressure stable, can improve the efficient of compressor and prevent because the wear phenomenon that excess compression causes takes place.
The technological innovation of the anti-locking apparatus of excess compression of the utility model rotary compressor that above-mentioned structure like this constitutes all has many saving graces for technician of the same trade now, and the progressive that possesses skills really.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model 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 solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (3)
1, the anti-locking apparatus of a kind of excess compression of rotary compressor is characterized in that: comprise being fixedly mounted on enclosure, and its inside has along the radial direction moving linearly and the inner space divided into the cylinder of the air throttle that sucks space and compression volume; Combine with the motor section that is installed in above-mentioned enclosure and is used to produce driving force, connect said cylinder, and form in order to be installed in said cylinder inner and form the running shaft of the centrifugal portion of rotation mount surface at its outer circumferential face in the one side; Be incorporated into centrifugal of above-mentioned running shaft and contact the plunger of mobile cold media air in the process of carrying out centrifugal rotation with the internal diameter of above-mentioned cylinder; In order to make above-mentioned plunger optionally away from the internal diameter of said cylinder, and make the cold media air that in the compression volume of said cylinder, compresses flow into the suction space, by can being installed on along the mode that the direction of the radius of above-mentioned plunger is slided with respect to above-mentioned centrifugal portion between above-mentioned centrifugal and the above-mentioned plunger, and forming the slide bushing of the rotation mount surface that can limit relative rotation with the contacted surface of contact of the rotation mount surface of above-mentioned centrifugal portion.
2, the anti-locking apparatus of the excess compression of rotary compressor according to claim 1 is characterized in that: also comprise and be installed between above-mentioned slide bushing and the above-mentioned centrifugal portion, apply the elastomer of elastic force at above-mentioned plunger to the approaching direction of the internal diameter of above-mentioned cylinder.
3, the anti-locking apparatus of the excess compression of a kind of rotary compressor according to claim 2, it is characterized in that: above-mentioned elastomer and above-mentioned slide bushing form as one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520113508 CN2821229Y (en) | 2005-07-13 | 2005-07-13 | Over compression preventer of rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520113508 CN2821229Y (en) | 2005-07-13 | 2005-07-13 | Over compression preventer of rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821229Y true CN2821229Y (en) | 2006-09-27 |
Family
ID=37017783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520113508 Expired - Fee Related CN2821229Y (en) | 2005-07-13 | 2005-07-13 | Over compression preventer of rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821229Y (en) |
-
2005
- 2005-07-13 CN CN 200520113508 patent/CN2821229Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060927 |