CN204239255U - Multi-cylinder rotary compressor and crankshaft group thereof - Google Patents
Multi-cylinder rotary compressor and crankshaft group thereof Download PDFInfo
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- CN204239255U CN204239255U CN201420591312.XU CN201420591312U CN204239255U CN 204239255 U CN204239255 U CN 204239255U CN 201420591312 U CN201420591312 U CN 201420591312U CN 204239255 U CN204239255 U CN 204239255U
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- crankshaft
- dividing plate
- rotary compressor
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Abstract
The utility model discloses a kind of multi-cylinder rotary compressor and crankshaft group thereof, the crankshaft group of described multi-cylinder rotary compressor comprises: multiple crankshaft section, and described multiple crankshaft section coaxially and be connected successively, each described crankshaft section is equipped with eccentric part; At least one dividing plate, described dividing plate has through hole, and described diaphragm housing ring to be located on described crankshaft section and between adjacent two described eccentric parts, and the internal diameter of the through hole of wherein said dividing plate is less than the external diameter of eccentric part described in adjacent with it any one.According to the crankshaft group of the multi-cylinder rotary compressor of the utility model embodiment, its dividing plate is easy for installation, good airproof performance, reliability are high.
Description
Technical field
The utility model relates to Compressor Technology field, especially relates to a kind of crankshaft group of multi-cylinder rotary compressor and has the multi-cylinder rotary compressor of this crankshaft group.
Background technique
Multi-cylinder rotary compressor comprises multiple cylinder, corresponding, and bent axle is provided with multiple eccentric part, and diaphragm housing ring is located between two adjacent eccentric parts.
In routine techniques, dividing plate is all be nested into the part between adjacent two eccentric parts from one end of bent axle.In order to ensure that dividing plate can be inserted in smoothly, need the endoporus aperture of dividing plate to make the external diameter being greater than crankshaft eccentric portion.Because dividing plate endoporus is greater than eccentric part external diameter, when crankshaft eccentric amount is larger, crankshaft eccentric portion size is larger, causes piston wall thickness thinner, piston and dividing plate sealing area cannot meet design requirement, if cause again piston cannot be inserted in eccentric part by reducing eccentric part external diameter.
Some artificer can adopt size design bearing, allows piston be inserted in from the minor axis of path, reduces minor axis intensity and reliability like this.Can be inserted in from minor axis to make upper offset piston, can increase after upper and lower eccentric part distance makes upper piston first be inserted in lower eccentric part, be inserted in through the joint of upper and lower eccentric part on upper eccentric part, although such design increases crankshaft eccentric amount, but increase the length of bent axle intermediate portion, cause bent axle amount of deflection and intensity all to be weakened, have a strong impact on reliability.
Can meet again the requirement of sealing area to increase offset, some enterprise adopts and is separated dividing plate technology, but being separated dividing plate causes dividing plate to there is risk of leakage at parting surface, and it is comparatively complicated to be separated dividing plate processing and assembling.
Model utility content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the utility model proposes a kind of crankshaft group of multi-cylinder rotary compressor, the dividing plate of this crankshaft group is easy for installation, good airproof performance, reliability be high.
The utility model also proposed a kind of multi-cylinder rotary compressor with above-mentioned crankshaft group.
According to the crankshaft group of the multi-cylinder rotary compressor of the utility model embodiment, comprising: multiple crankshaft section, described multiple crankshaft section coaxially and be connected successively, each described crankshaft section is equipped with eccentric part; At least one dividing plate, described dividing plate has through hole, and described diaphragm housing ring to be located on described crankshaft section and between adjacent two described eccentric parts, and the internal diameter of the through hole of wherein said dividing plate is less than the external diameter of eccentric part described in adjacent with it any one.
According to the crankshaft group of the utility model first aspect embodiment, by this crankshaft group is designed to multiple crankshaft section structure, thus dividing plate can be installed the joint between adjacent crankshaft section, which simplify the installation method of dividing plate, dividing plate easier for installation.And be less than the external diameter of any one adjacent with it eccentric part due to the internal diameter of the through hole of dividing plate, thus the sealing area between dividing plate and piston can be increased, can sealing effect be improved.Further, dividing plate is an overall structure, thus ensure that the structural strength of dividing plate and the reliability of dividing plate.Installation method due to dividing plate is different from mounting type of the prior art, can reduce the length between adjacent two eccentric parts thus, can ensure degree of disturbing and the intensity of crankshaft group like this, and then ensures the reliability of crankshaft group.
In addition, also following additional technical feature can be had according to the crankshaft group of multi-cylinder rotary compressor of the present utility model:
According to an embodiment of the present utility model, the connecting end surface of each described crankshaft section is plane or ladder surface.
According to an embodiment of the present utility model, described diaphragm housing ring is located at the joint of adjacent two described crankshaft sections.
According to an embodiment of the present utility model, the internal diameter of the through hole of described dividing plate is greater than the external diameter of described crankshaft section part with matching.
According to an embodiment of the present utility model, adjacent two described crankshaft sections are connected by coupling.
According to an embodiment of the present utility model, between adjacent two described eccentric parts, be provided with a described dividing plate, and between any one in described coupling and described two eccentric parts of described dividing plate.
According to an embodiment of the present utility model, between adjacent two described eccentric parts, be provided with two described dividing plates, and two described dividing plates lay respectively between described coupling and described two eccentric parts.
According to an embodiment of the present utility model, described at least one, the end of the described dividing plate of the vicinity of eccentric part is provided with thrust surface.
According to an embodiment of the present utility model, described dividing plate is configured to bearing structure.
According to the multi-cylinder rotary compressor of the utility model second aspect embodiment, comprise the crankshaft group according to the utility model first aspect.
Because above-mentioned crankshaft group has, dividing plate is easy for installation, good airproof performance, high reliability, therefore by arranging this crankshaft group, thus multi-cylinder rotary compressor has advantages such as structure is simple, easy to assembly, reliability is high, good airproof performance.
Additional aspect of the present utility model 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 utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model 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 multiple crankshaft sections of crankshaft group according to the utility model embodiment;
Fig. 2 is the structural representation of multiple crankshaft sections of crankshaft group according to another embodiment of the utility model;
Fig. 3 is the structural representation of the crankshaft group according to the utility model embodiment;
Fig. 4 is the structural representation of the crankshaft group shown in Fig. 3, which increases metal (upper structure;
Fig. 5 is the scheme of installation of the crankshaft group according to the utility model embodiment;
Fig. 6 is the structural representation of the crankshaft group according to another embodiment of the utility model;
Fig. 7 is the structural representation of the crankshaft group according to another embodiment of the utility model;
Fig. 8 is the structural representation of the crankshaft group according to another embodiment of the utility model.
Reference character:
Crankshaft group 100;
Crankshaft section 1; Main shaft 11; Eccentric part 12; Thrust surface 121; Connecting end surface 13;
Dividing plate 2;
Coupling 3; Upper piston 4; Lower piston 5, upper bearing (metal) 6; Lower bearing 7.
Embodiment
Be described below in detail embodiment of the present utility model, 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 utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " 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 utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.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 description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In description of the present utility model, 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, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
First it should be noted that, crankshaft group 100 according to the utility model embodiment is specially adapted to multi-cylinder rotary compressor, particularly, this rotary compressor comprises upper and lower spaced multiple cylinder, correspondingly, crankshaft group 100 is provided with multiple eccentric part 12, multiple eccentric part 12 is arranged with multiple cylinder one_to_one corresponding, each eccentric part 12 is arranged with a piston, the eccentric part 12 being arranged with piston is like this contained in each cylinder respectively, to complete the process of compression in the rotation process of crankshaft group 100 in corresponding cylinder.
The utility model proposes a kind of crankshaft group 100 for above-mentioned multi-cylinder rotary compressor and there is the multi-cylinder rotary compressor of this crankshaft group 100.
The crankshaft group 100 according to the utility model first aspect embodiment is described in detail below with reference to Fig. 1-Fig. 8.As Figure 1-Figure 8, crankshaft group 100 comprises multiple crankshaft sections 1 and at least one dividing plate 2, and multiple crankshaft section 1 coaxially and be connected successively, each crankshaft section 1 is equipped with eccentric part 12.
Particularly, multiple crankshaft section 1 includes main shaft 11 and has the eccentric part 12 of throw of eccentric with main shaft 11, the dead in line of the main shaft 11 of each crankshaft section 1, and multiple crankshaft section 1 is connected respectively from the top down successively, see on the whole, multiple crankshaft section 1 forms an overall bent axle agent structure.That is, can regard as the existing bent axle with multiple eccentric part 12 blocks rear formed structure between adjacent two eccentric parts 12 according to the crankshaft group 100 of the utility model embodiment.
Dividing plate 2 has through hole (scheming not shown), dividing plate 2 is set on crankshaft section 1 and between adjacent two eccentric parts 12, the internal diameter of the through hole of its central diaphragm 2 is less than the external diameter of any one adjacent with it eccentric part 12.As shown in Figure 3, when installing dividing plate 2, the crankshaft section 1 being positioned at top can be nested into the through hole of dividing plate 2 from the top down, and the crankshaft section 1 being positioned at below can be nested into the through hole of dividing plate 2 from bottom to top.That is, dividing plate 2 can be installed from the joint of adjacent two crankshaft sections 1, can avoid described in the utility model prior art thus, by the through hole of dividing plate is made be greater than eccentric part size after be inserted in from one end of bent axle again.
According to the crankshaft group 100 of the utility model embodiment, by this crankshaft group 100 is designed to multiple crankshaft section 1 structure, thus dividing plate 2 can be installed the joint between adjacent crankshaft section 1, which simplify the installation method of dividing plate 2, dividing plate 2 easier for installation.And be less than the external diameter of any one adjacent with it eccentric part 12 due to the internal diameter of the through hole of dividing plate 2, thus the sealing area between dividing plate 2 and piston can be increased, can sealing effect be improved.Further, dividing plate 2 is overall structures, thus ensure that the structural strength of dividing plate 2 and the reliability of dividing plate 2.Installation method due to dividing plate 2 is different from mounting type of the prior art, can reduce the length between adjacent two eccentric parts 12 thus, can ensure degree of disturbing and the intensity of crankshaft group 100 like this, and then ensures the reliability of crankshaft group 100.
Two embodiments as depicted in figs. 1 and 2, the connecting end surface 13 of each crankshaft section 1 is plane or ladder surface.It should be explained that " connecting end surface 13 of each crankshaft section 1 " refers to, the end face be connected with adjacent crankshaft section 1 of each crankshaft section 1.The shape of the connecting end surface 13 of adjacent two crankshaft sections 1 is coupling, namely when the connecting end surface 13 of a crankshaft section 1 is plane, the corresponding connecting end surface 13 of another crankshaft section 1 be then attached thereto also is plane, i.e. example as shown in Figure 1, can make the structure of multiple interconnective crankshaft section 1 simple thus; When the connecting end surface 13 of a crankshaft section 1 is ladder surface, the corresponding connecting end surface 13 of another crankshaft section 1 be then attached thereto also is ladder surface and matches with it, i.e. example as shown in Figure 2, can facilitate the reliability that crankshaft section 1 is connected with cooperation and the crankshaft section 1 of dividing plate 2 thus.
In embodiments more of the present utility model, directly can be connected by dividing plate 2 between adjacent two crankshaft sections 1, as shown in Figure 3-Figure 5, can also be connected by coupling 3 between certainly adjacent two crankshaft sections 1, as Figure 6-Figure 8.
The embodiment connecting two crankshaft sections 1 between dividing plate 2 is described through below with reference to Fig. 3-Fig. 5.Dividing plate 2 is set in the joint of adjacent two crankshaft sections 1, and that is, dividing plate 2 is set in connecting end surface 13 place of two adjacent crankshaft sections 1,
As shown in Figure 3-Figure 5, the external diameter of the vicinity part of connecting end surface 13 separately of two crankshaft sections 1 be connected is identical, and ensure during assembling that two crankshaft sections 1 are coaxial, two crankshaft sections 1 are set in the through hole of dividing plate 2 from respective connecting end surface 13 respectively.Preferably, fine finishing can be carried out again in the attachment portion of two crankshaft sections 1 be connected after two crankshaft sections 1 are connected, can ensure that the attachment portion external diameter of two crankshaft sections 1 is consistent thus, the connected part of two crankshaft sections 1 can be made there is no obvious convex portion, and avoid dividing plate 2 endoporus to be scraped off.
In order to ensure that each crankshaft section 1 can freely rotate relative to the through hole of dividing plate 2, the internal diameter of the through hole of dividing plate 2 should be greater than the external diameter of the attachment portion of crankshaft section 1.Wherein, the internal diameter of the through hole of dividing plate 2 is greater than the external diameter of crankshaft section 1 part with matching, namely the internal diameter of the through hole of dividing plate 2 is greater than the external diameter of the part that crankshaft section 1 matches with this through hole " refer to; that is; the through hole internal diameter of dividing plate 2 is greater than the external diameter of the attachment portion of above-mentioned two crankshaft sections 1 be connected, make dividing plate 2 be more prone to install thus.Be understandable that, " internal diameter of the through hole of dividing plate 2 is greater than the external diameter of crankshaft section 1 part with matching " described here refers to the external diameter of the part that the internal diameter of the through hole of dividing plate 2 matches with this through hole slightly larger than crankshaft section 1, that is, the external diameter of the part that the internal diameter of the through hole of dividing plate 2 and crankshaft section 1 match with this through hole is more or less the same, and can ensure that dividing plate 2 pairs of crankshaft sections 1 have reliable supporting effect like this.
Wherein, alternatively, dividing plate 2 can be configured to bearing structure, and that is, dividing plate 2 can play the effect of bearing.Particularly, dividing plate 2 can be the structures such as sliding bearing, rolling bearing, needle bearing.Like this, after crankshaft group 100 is in place, dividing plate 2 pairs of bearing sections can be utilized to play a supporting role, improve the structure stability of crankshaft group 100 further.
Wherein, as shown in Figure 4, it illustrates the structure of the upper bearing (metal) 6 and lower bearing 7 coordinated with crankshaft group 100, upper bearing (metal) 6 is set in and is positioned on the crankshaft section 1 of the top, and lower bearing 7 is set in and is positioned on the crankshaft section 1 of bottom.In an alternate exemplary of the present utility model, dividing plate 2 can be made to form the main stressed bearing of crankshaft group 100, particularly, suitably can reduce the diameter of axle and the height of upper bearing (metal) 6 and lower bearing 7, increase through hole internal diameter and the height of dividing plate 2, the stability of crankshaft group 100 can be improved thus, reach the object reducing rotary compressor height.
As shown in Fig. 3-Fig. 8, alternatively, the end of the contiguous dividing plate 2 of at least one eccentric part 12 is provided with thrust surface 121, can limit dividing plate 2 degrees of freedom in the axial direction thus by thrust surface 121, ensures the stability that dividing plate 2 is installed.Preferably, the lower end surface being positioned at the eccentric part 12 of top of adjacent two crankshaft sections 1 is provided with thrust surface 121, and the structure of crankshaft section 1 can be made thus more reasonable.
The embodiment that coupling 3 connects two adjacent crankshaft sections 1 is described through below with reference to Fig. 6-Fig. 8.Dividing plate 2 is set in outside the connecting end surface 13 of adjacent two crankshaft sections 1.Wherein coupling 3 can be existing structure, and its structure and size can be determined according to the structure of actual crank section 1 and size.
Particularly, example as shown in Figure 6 and Figure 7, is provided with a dividing plate 2 between adjacent two eccentric parts 12, and between any one in coupling 3 and two eccentric parts 12 of dividing plate 2.Namely as shown in Figure 6, dividing plate 2 can between coupling 3 and the eccentric part 12 of below crankshaft section 1, or as shown in Figure 7, dividing plate 2 can also coupling 3 and above crankshaft section 1 eccentric part 12 between.Certain the utility model is not limited to this, two dividing plates 2 can also be provided with between adjacent two eccentric parts 12, and two dividing plates 2 lay respectively between coupling 3 and two eccentric parts 12, that is, as shown in Figure 8, in two dividing plates 2 the dividing plate 2 of top be located at coupling 3 and above between off-axis portion, be located between coupling 3 and off-axis portion, below at the dividing plate 2 of below in two dividing plates 2.Thus, the mounting structure of dividing plate 2 can be made more diversified, different situations needs can be adapted to.
Referring to such as Fig. 5, the assembling method of crankshaft group 100 is described.First by be positioned at top crankshaft section 1 off-axis portion on sheathed upper piston 4, again by be positioned at below crankshaft section 1 off-axis portion on sheathed lower piston 5, after being in place, the crankshaft section 1 being positioned at top is set in from the top down the through hole of dividing plate 2, again the crankshaft section 1 being positioned at below is set in from bottom to top the through hole of dividing plate 2, completes the installation of crankshaft group 100 thus.Simple, convenient according to the installation method of the crankshaft group 100 of the utility model embodiment.
The utility model second aspect embodiment proposes a kind of multi-cylinder rotary compressor, and it comprises above-mentioned crankshaft group 100.Because above-mentioned crankshaft group 100 has, dividing plate 2 is easy for installation, good airproof performance, high reliability, therefore by arranging this crankshaft group 100, thus multi-cylinder rotary compressor has advantages such as structure is simple, easy to assembly, reliability is high, good airproof performance.
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 utility model 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 described embodiment of the present utility model, 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 utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (10)
1. a crankshaft group for multi-cylinder rotary compressor, is characterized in that, comprising:
Multiple crankshaft section, described multiple crankshaft section coaxially and be connected successively, each described crankshaft section is equipped with eccentric part;
At least one dividing plate, described dividing plate has through hole, and described diaphragm housing ring to be located on described crankshaft section and between adjacent two described eccentric parts, and the internal diameter of the through hole of wherein said dividing plate is less than the external diameter of eccentric part described in adjacent with it any one.
2. the crankshaft group of multi-cylinder rotary compressor according to claim 1, is characterized in that, the connecting end surface of each described crankshaft section is plane or ladder surface.
3. the crankshaft group of multi-cylinder rotary compressor according to claim 1, is characterized in that, described diaphragm housing ring is located at the joint of adjacent two described crankshaft sections.
4. the crankshaft group of multi-cylinder rotary compressor according to claim 1, is characterized in that, the internal diameter of the through hole of described dividing plate is greater than the external diameter of described crankshaft section part with matching.
5. the crankshaft group of multi-cylinder rotary compressor according to claim 1, is characterized in that, adjacent two described crankshaft sections are connected by coupling.
6. the crankshaft group of multi-cylinder rotary compressor according to claim 5, is characterized in that, is provided with a described dividing plate between adjacent two described eccentric parts, and between any one in described coupling and described two eccentric parts of described dividing plate.
7. the crankshaft group of multi-cylinder rotary compressor according to claim 5, is characterized in that, is provided with two described dividing plates between adjacent two described eccentric parts, and two described dividing plates lay respectively between described coupling and described two eccentric parts.
8. the crankshaft group of multi-cylinder rotary compressor according to claim 1, is characterized in that, described at least one, the end of the described dividing plate of the vicinity of eccentric part is provided with thrust surface.
9. the crankshaft group of the multi-cylinder rotary compressor according to any one of claim 1-8, is characterized in that, described dividing plate is configured to bearing structure.
10. a multi-cylinder rotary compressor, is characterized in that, comprises the crankshaft group according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591312.XU CN204239255U (en) | 2014-10-13 | 2014-10-13 | Multi-cylinder rotary compressor and crankshaft group thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591312.XU CN204239255U (en) | 2014-10-13 | 2014-10-13 | Multi-cylinder rotary compressor and crankshaft group thereof |
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| Publication Number | Publication Date |
|---|---|
| CN204239255U true CN204239255U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420591312.XU Expired - Fee Related CN204239255U (en) | 2014-10-13 | 2014-10-13 | Multi-cylinder rotary compressor and crankshaft group thereof |
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| CN (1) | CN204239255U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314820A (en) * | 2014-10-13 | 2015-01-28 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary compressor and crankshaft assembly thereof |
| CN111043036A (en) * | 2019-11-27 | 2020-04-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body subassembly, compressor and air conditioner |
-
2014
- 2014-10-13 CN CN201420591312.XU patent/CN204239255U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314820A (en) * | 2014-10-13 | 2015-01-28 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary compressor and crankshaft assembly thereof |
| CN111043036A (en) * | 2019-11-27 | 2020-04-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body subassembly, compressor and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20191013 |