CN204941946U - Rotary compressor and compressing mechanism thereof - Google Patents
Rotary compressor and compressing mechanism thereof Download PDFInfo
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- CN204941946U CN204941946U CN201520701266.9U CN201520701266U CN204941946U CN 204941946 U CN204941946 U CN 204941946U CN 201520701266 U CN201520701266 U CN 201520701266U CN 204941946 U CN204941946 U CN 204941946U
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Abstract
The utility model discloses a kind of rotary compressor and compressing mechanism thereof.Described compressing mechanism comprises: cylinder, and described cylinder is provided with cylinder-bore and vane slot; Piston, the eccentric part that described piston sleeve is located at bent axle eccentricly around the center of described cylinder-bore is contained in described cylinder-bore rotationally; Bearing, described bearing is located at the upper end of described cylinder or lower end and jointly limits cylinder chamber between the end face of described bearing and described cylinder-bore, described bearing is provided with multiple exhaust port be communicated with described cylinder chamber respectively, and described multiple exhaust port is arranged spaced apart on the rotation path of described piston.Little according to the exhaust resistance of the compressing mechanism of the utility model embodiment, noise is low, exhaust clearance volume little, the simple cost of structure is low.
Description
Technical field
The present invention relates to compressor field, especially relate to a kind of compressing mechanism of rotary compressor and there is the rotary compressor of this compressing mechanism.
Background technique
Existing a lot of rotary compressor, be exhausted bearing is one-sided by means of only the exhaust angular cut on cylinder at exhaust phase, such exhaust resistance is large.
In order to solve the problem, the structure that existing huge discharge compressor and the higher compressor of cylinder all adopt major and minor bearing to be vented respectively, this structure can effectively reduce exhaust resistance, but also cause a series of shortcomings such as exhaust noise is high, exhaust cross gap volume large, the distortion of major-minor bearing valve seat, fit up gap requires greatly, piston end surface leakage is large, if particularly in housing low pressure compressor design in the equal designing and arranging pore of major-minor bearing; major-minor bearing all will arrange the exhaust cavity of sealing, cause structure very complicated, cost is very high.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention needs the compressing mechanism proposing a kind of rotary compressor, and the exhaust resistance of this compressing mechanism is little, noise is low, the clearance volume of exhaust is little, the simple cost of structure is low.
The present invention also needs to propose a kind of rotary compressor with this compressing mechanism.
The compressing mechanism of embodiment according to a first aspect of the present invention, comprising: cylinder, and described cylinder is provided with cylinder-bore and vane slot; Piston, the eccentric part that described piston sleeve is located at bent axle eccentricly around the center of described cylinder-bore is contained in described cylinder-bore rotationally; Bearing, described bearing is located at the upper end of described cylinder or lower end and jointly limits cylinder chamber between the end face of described bearing and described cylinder-bore, described bearing is provided with multiple exhaust port be communicated with described cylinder chamber respectively, and described multiple exhaust port is arranged spaced apart on the rotation path of described piston.
According to the compressing mechanism of the embodiment of the present invention, by being provided with multiple exhaust port on a bearing, thus the exhaust resistance of compressing mechanism is effectively reduced, and the structure of compressing mechanism is simple, low cost of manufacture, noise is low, and clearance volume is little.And owing to being provided with the structure of multiple exhaust port on a bearing, depth pistion can also being reduced and join a grade gap, reduce and leak, improve performance, reduce valve seat amount of deformation, simplify assembly technology etc.
In addition, also following additional technical feature can be had according to the compressing mechanism of rotary compressor of the present invention:
According to one embodiment of present invention, described exhaust port comprises first row pore, and in horizontal projection, the contiguous described vane slot of described first row pore is arranged.
According to one embodiment of present invention, on described cylinder, the position of corresponding described first row pore is provided with exhaust angular cut.
According to one embodiment of present invention, described exhaust port comprises at least one second row pore, and described second row gas cell distribution is being start line with the center line of described vane slot, turning in the scope of 200 °-350 ° along the direction of described piston rotation.
According to one embodiment of present invention, in horizontal projection, described second row pore is positioned at described cylinder-bore inside and is positioned at the outside of described piston inner hole.
According to one embodiment of present invention, the aperture of described second row pore is less than the thickness of described piston.
According to one embodiment of present invention, described exhaust port is straight hole or inclined hole.
According to one embodiment of present invention, described bearing is located at the lower end of described cylinder.
The rotary compressor of embodiment according to a second aspect of the present invention, comprises the compressing mechanism of the rotary compressor according to a first aspect of the present invention described in embodiment.
Owing to there is above-mentioned beneficial effect according to the compressing mechanism of the embodiment of the present invention, therefore by arranging this compressing mechanism, thus can make that rotary compressor exhaust resistance is little, noise is low, the clearance volume of exhaust is little, the simple cost of structure is low.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the rotary compressor according to the embodiment of the present invention;
Fig. 2-Fig. 5 is the sectional view of the compressing mechanism of rotary compressor according to the embodiment of the present invention, which respectively show structural representation when to be positioned at diverse location when piston rotates in cylinder-bore.
Reference character:
Rotary compressor 100;
Compressing mechanism 10;
Cylinder 1; Cylinder-bore 11; Vane slot 12; Suction port 13; Cylinder chamber 14; Air aspiration cavity 141; Compression chamber 142; First row pore 151; Second row pore 152; Exhaust angular cut 16;
Piston 2; Piston inner hole 21;
Bearing 3;
Housing 20; Upper shell 201; Middle casing 202; Lower shell body 203;
Electric machine assembly 30; Stator 301; Rotor 302;
Bent axle 40; Eccentric part 401;
Sucking pipe 50.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Below with reference to Fig. 1-Fig. 5, the compressing mechanism 10 according to the rotary compressor 100 of the embodiment of the present invention is described.First it should be noted that, this rotary compressor 100 can be vertical compressor or horizontal compressor, for convenience, is only described in detail for vertical compressor below.
As shown in Figure 1, according to the rotary compressor 100 of the embodiment of the present invention, comprise housing 20, electric machine assembly 30, compressing mechanism 10 and bent axle 40.
Particularly, housing 20 can comprise upper shell 201, middle casing 202 and lower shell body 203, upper shell 201 and lower shell body 203 are connected to top and the bottom of middle casing 202, and upper shell 201, lower shell body 203 and middle casing 202 jointly limit and seal and cylindrical shell 20 structure of hollow, preferably, middle casing 202 can adopt welding procedure to be integrally fixed structure respectively with upper shell 201 and lower shell body 203.Certainly, the structure of housing 20 is not limited thereto.
Further, electric machine assembly 30 can be located at the top in housing 20, compressing mechanism 10 to be arranged in housing 20 and to be positioned at the below of electric machine assembly 30, wherein, electric machine assembly 30 can comprise stator 301 and rotor 302, stator 301 can be fixed together with the periphery wall of middle casing 202, rotor 302 can be located in stator 301 rotationally, the upper end of bent axle 40 can be fixed together with rotor 302 hot jacket, thus rotor 302 can driving crank 40 flexing axle 40 central axis rotate, compressing mechanism 10 is run through in the bottom of bent axle 40, thus the piston 2 in compressing mechanism 10 can be driven to compress in the process of bent axle 40 rotation.
As described in Fig. 1-Fig. 5, the compressing mechanism 10 according to the embodiment of the present invention comprises: cylinder 1, piston 2 and bearing 3.
Cylinder 1 is provided with cylinder-bore 11, and cylinder-bore 11 runs through the height of cylinder 1, and vane slot 12 to be formed on cylinder 1 and to be communicated with cylinder-bore 11, and slide plate is located in vane slot 12 slidably, cylinder 1 can be provided with suction port 13 and suck for refrigerant.Wherein as shown in Figure 1, housing 20 is provided with sucking pipe 50, and sucking pipe 50 is communicated with housing 20 inside, that is, the air inlet of refrigerant directly enters into the inside of housing 20 by the sucking pipe 50 on housing 20, then to be entered in cylinder 1 by suction port 13 by the inside of housing 20 and compress.
Bearing 3 is located at the upper end of cylinder 1 or lower end and jointly limits cylinder chamber 14 between the end face of bearing 3 and cylinder-bore 11, the eccentric part 401 that piston 2 is set in bent axle 40 eccentricly around the center of cylinder-bore 11 is contained in cylinder-bore 11 rotationally, the inner of slide plate is only against in the outer wall of piston 2 all the time, thus, cylinder chamber 14 limits air aspiration cavity 141 and compression chamber 142 jointly by piston 2 and slide plate.
Bearing 3 is provided with multiple exhaust port be communicated with cylinder chamber 14 respectively, and multiple exhaust port is arranged spaced apart on the rotation path of piston 2.Here it should be explained that, " bearing 3 is provided with multiple exhaust port be communicated with cylinder chamber 14 respectively " refers to that a bearing 3 is provided with two or more exhaust port, discharge from compression chamber 142 for refrigerant, that is at exhaust phase, refrigerant can be discharged to cylinder 1 outside by the exhaust port on bearing 3.
Bearing 3 can be one also can be two, and when bearing 3 is one, this bearing 3 can be located at upper end or the lower end of cylinder 1, and multiple exhaust port is formed on this bearing 3; When bearing 3 is two, two bearings 3 are located at the top and bottom of cylinder 1 respectively, multiple exhaust port can be formed in be positioned at cylinder 1 upper end bearing 3 on, or multiple exhaust port can be formed in be positioned at cylinder 1 lower end bearing 3 on.
According to the compressing mechanism 10 of the rotary compressor 100 of the embodiment of the present invention, by being provided with multiple exhaust port thus when compressing mechanism 10 is in exhaust phase on bearing 3, can be vented respectively by above-mentioned multiple exhaust port, can overcome like this because of the large defect of exhaust resistance only when being vented angular cut 16 and being exhausted in prior art, and the complex structure caused because being respectively equipped with exhaust port on major-minor bearing in prior art, the defect such as noise is large, clearance volume is large can be overcome.
Therefore, according to the compressing mechanism 10 of the embodiment of the present invention, by being provided with multiple exhaust port on a bearing 3, thus the exhaust resistance of compressing mechanism 10 is effectively reduced, and the structure of compressing mechanism 10 is simple, low cost of manufacture, noise is low, and clearance volume is little.And owing to being provided with the structure of multiple exhaust port on a bearing 3, piston 2 can also being reduced and highly join a grade gap, reduce and leak, improve performance, reduce valve seat amount of deformation, simplify assembly technology etc.
In one embodiment of the invention, as shown in Figure 1, bearing 3 is located at the lower end of cylinder 1, and multiple exhaust port is formed on this exhaust port, that is, in an embodiment of the present invention, multiple exhaust port can be formed in be positioned at cylinder 1 lower end bearing 3 on.Refrigerant is after being compressed thus, discharges cylinder 1 downwards and discharges to housing 20 outside.Housing 20 inside is configured to environment under low pressure thus, and namely high pressure refrigerant gas directly discharges housing 20 and inner without housing 20.The piston 2 formula compressor of environment under low pressure can be made thus to be more applicable for above-mentioned vent structure.
In example as described in Fig. 2-Fig. 5, exhaust port comprises first row pore 151, and in horizontal projection, the contiguous vane slot 12 of first row pore 151 is arranged.The quantity of first row pore 151 can be one.Particularly, the position of this first row pore 151 is relative with the position of the exhaust angular cut 16 on cylinder 1 of the prior art.
Alternatively, in an embodiment of the present invention, on cylinder 1, the position of corresponding first row pore 151 can also be provided with exhaust angular cut 16, and this exhaust angular cut 16 can be identical with position with the structure of exhaust angular cut of the prior art, can reduce exhaust resistance like this.
As Figure 2-Figure 5, exhaust port comprises at least one second row pore 152, and second row pore 152 is distributed in and is start line with the center line of vane slot 12, turns in the scope of 200 °-350 ° along the direction that piston 2 rotates.Such as, in the example shown in Fig. 2-Fig. 5, such as, in piston 2 eccentric motion process, contact as initial position with piston 2 with the center of vane slot 12, rotate clockwise around cylinder 1 center, again contact as final position with the center of vane slot 12 to piston 2, be defined as a rotation period of piston 2.The sense of rotation of the piston 2 that namely this final position is corresponding is 360 °, and second row pore 152 is positioned at the scope of 200 °-350 °.
Alternatively, the quantity of second row pore 152 can be one also can be multiple, and the route interval that multiple second row pore 152 can rotate along cardinal principle piston 2 on bearing 3 opens layout.
Wherein, above-mentioned exhaust port all can be provided with the opening and closing that corresponding exhaust valve plate is exhausted hole, namely utilize exhaust valve plate inside and outside differential pressure be used for open or close exhaust port.
Advantageously, exhaust port can also utilize the end face of piston 2 to seal, so that after first exhaust port is closed by the end face of piston 2 by exhaust phase, supply and exhaust valve block provides time enough to close exhaust port, the possibility of exhaust gas leakage can be reduced thus, improve exhaust effect.
Particularly, in horizontal projection, second row pore 152 is positioned at cylinder-bore 11 inside and is positioned at the outside of piston inner hole 21.That is, second row pore 152 is tangency location with the minimum distance of cylinder-bore 11, namely be second row pore 152 when second row pore 152 and cylinder-bore 11 inscribe with the position of cylinder-bore 11 the most nearby, thus when piston 2 rotates, air aspiration cavity 141 and exhaust cavity can be avoided to be collaborated by exhaust port; In piston 2 rotation process, second row pore 152 is tangency location with the minimum distance of piston inner hole 21, namely be second row pore 152 when second row pore 152 is circumscribed with piston inner hole 21 with the position of piston inner hole 21 the most nearby, can avoid thus in piston 2 rotation process, piston inner hole 21 is communicated with air aspiration cavity 141 or exhaust cavity by second row pore 152, is mutually collaborated.
Further, the aperture D of second row pore 152 is less than the thickness L of piston 2, and can avoid further in piston 2 rotation process like this, piston inner hole 21 is communicated with air aspiration cavity 141 or exhaust cavity by second row pore 152, is mutually collaborated.
Alternatively, exhaust port can be straight hole, or exhaust port can also be inclined hole, and the structure of exhaust port can be made thus to be applicable to more situation.
The rotary compressor 100 of embodiment according to a second aspect of the present invention, comprises compressing mechanism 10 according to a first aspect of the present invention.Because the compressing mechanism 10 according to the embodiment of the present invention has above-mentioned beneficial effect, therefore by arranging this compressing mechanism 10, thus can make that rotary compressor 100 exhaust resistance is little, noise is low, the clearance volume of exhaust is little, the simple cost of structure is low.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (9)
1. a compressing mechanism for rotary compressor, is characterized in that, comprising:
Cylinder, described cylinder is provided with cylinder-bore and vane slot;
Piston, the eccentric part that described piston sleeve is located at bent axle eccentricly around the center of described cylinder-bore is contained in described cylinder-bore rotationally;
Bearing, described bearing is located at the upper end of described cylinder or lower end and jointly limits cylinder chamber between the end face of described bearing and described cylinder-bore, described bearing is provided with multiple exhaust port be communicated with described cylinder chamber respectively, and described multiple exhaust port is arranged spaced apart on the rotation path of described piston.
2. the compressing mechanism of rotary compressor according to claim 1, is characterized in that, described exhaust port comprises first row pore, and in horizontal projection, the contiguous described vane slot of described first row pore is arranged.
3. the compressing mechanism of rotary compressor according to claim 2, is characterized in that, on described cylinder, the position of corresponding described first row pore is provided with exhaust angular cut.
4. the compressing mechanism of rotary compressor according to claim 1 and 2, it is characterized in that, described exhaust port comprises at least one second row pore, and described second row gas cell distribution is being start line with the center line of described vane slot, turning in the scope of 200 °-350 ° along the direction of described piston rotation.
5. the compressing mechanism of rotary compressor according to claim 4, is characterized in that, in horizontal projection, described second row pore is positioned at described cylinder-bore inside and is positioned at the outside of described piston inner hole.
6. the compressing mechanism of rotary compressor according to claim 4, is characterized in that, the aperture of described second row pore is less than the thickness of described piston.
7. the compressing mechanism of rotary compressor according to claim 1, is characterized in that, described exhaust port is straight hole or inclined hole.
8. the compressing mechanism of rotary compressor according to claim 1, is characterized in that, described bearing is located at the lower end of described cylinder.
9. a rotary compressor, is characterized in that, comprises the compressing mechanism of the rotary compressor according to any one of claim 1-8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701266.9U CN204941946U (en) | 2015-09-11 | 2015-09-11 | Rotary compressor and compressing mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701266.9U CN204941946U (en) | 2015-09-11 | 2015-09-11 | Rotary compressor and compressing mechanism thereof |
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| CN204941946U true CN204941946U (en) | 2016-01-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620706A (en) * | 2016-07-14 | 2018-01-23 | 富士通将军股份有限公司 | Rotary compressor |
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- 2015-09-11 CN CN201520701266.9U patent/CN204941946U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620706A (en) * | 2016-07-14 | 2018-01-23 | 富士通将军股份有限公司 | Rotary compressor |
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