Compressor crankshaft connecting rod mechanism, compressor and refrigeration equipment
阅读说明：本技术 压缩机曲轴连杆机构、压缩机及制冷设备 (Compressor crankshaft connecting rod mechanism, compressor and refrigeration equipment ) 是由 杨百昌 李华军 罗祥胜 金盛江 王永昌 于 2020-07-30 设计创作，主要内容包括：本发明涉及一种压缩机曲轴连杆机构、压缩机及制冷设备,压缩机曲轴连杆机构包括连杆和曲轴,连杆连接在曲轴的盘面上；连杆包括第一连杆、销钉和第二连杆,第一连杆和第二连杆通过销钉可拆卸连接；曲轴包括偏心曲轴本体和偏心轴,偏心轴可拆卸安装在偏心曲轴本体的盘面上；每个偏心轴包括安装部和偏心连接轴,偏心连接轴设置在安装部的轴向一侧端面上,偏心连接轴的中心轴与安装部的中心轴之间具有预定间距。本发明提供的压缩机曲轴连杆机构中,曲轴和连杆均采用能够拼接的分体式结构,装配空间要求小,无需在压缩机气缸上设置月牙槽,避免了因为珩磨气缸座缸孔导致的气缸座缸孔和轴孔垂直度误差,节省成本且提高了压缩机的工作效率。(The invention relates to a compressor crankshaft connecting rod mechanism, a compressor and refrigeration equipment, wherein the compressor crankshaft connecting rod mechanism comprises a connecting rod and a crankshaft, and the connecting rod is connected to the disc surface of the crankshaft; the connecting rod comprises a first connecting rod, a pin and a second connecting rod, and the first connecting rod and the second connecting rod are detachably connected through the pin; the crankshaft comprises an eccentric crankshaft body and an eccentric shaft, and the eccentric shaft is detachably arranged on the disc surface of the eccentric crankshaft body; each eccentric shaft comprises an installation part and an eccentric connecting shaft, the eccentric connecting shaft is arranged on one axial end face of the installation part, and a preset distance is reserved between the central shaft of the eccentric connecting shaft and the central shaft of the installation part. In the compressor crankshaft connecting rod mechanism provided by the invention, the crankshaft and the connecting rod are of split structures which can be spliced, the requirement on assembly space is low, a crescent groove is not required to be arranged on a compressor cylinder, the verticality error of a cylinder hole and a shaft hole of a cylinder seat caused by honing the cylinder hole of the cylinder seat is avoided, the cost is saved, and the working efficiency of the compressor is improved.)
1. A compressor crankshaft connecting rod mechanism is characterized by comprising a connecting rod and a crankshaft, wherein the connecting rod is connected to the disk surface of the crankshaft;
the connecting rod comprises a first connecting rod, a pin and a second connecting rod, and the first connecting rod and the second connecting rod are detachably connected through the pin;
the crankshaft comprises an eccentric crankshaft body and an eccentric shaft, and the eccentric shaft is detachably mounted on the disc surface of the eccentric crankshaft body;
the disc surface of the eccentric crankshaft body is provided with an installation groove;
each eccentric shaft comprises a mounting part and an eccentric connecting shaft, the eccentric connecting shaft is arranged on one axial end face of the mounting part, and a preset distance is reserved between the central shaft of the eccentric connecting shaft and the central shaft of the mounting part; the mounting part is matched with the mounting groove and is arranged in the mounting groove;
the second connecting rod is sleeved on the eccentric connecting shaft and can rotate relative to the eccentric connecting shaft at the joint.
2. The compressor crankshaft connecting rod mechanism according to claim 1, wherein the first connecting rod includes a first bushing and a hollow connecting rod, one end of the hollow connecting rod is integrally connected with the first bushing, and an axial direction of the hollow connecting rod is perpendicular to an axial direction of the first bushing; the hollow connecting rod is provided with a butt joint groove with a preset depth, and a first pin hole penetrating through the hollow connecting rod is formed in the side surface of the hollow connecting rod;
the second connecting rod comprises a second shaft sleeve and a butt joint part, and the butt joint part is connected with the butt joint groove in a matching manner; the butt joint part is provided with a second pin hole;
the pin is inserted into the first pin hole and the second pin hole;
the second connecting rod is pivoted with the eccentric connecting shaft through the second shaft sleeve.
3. The compressor crankshaft connecting rod mechanism according to claim 2, wherein the second connecting rod further comprises a connecting portion, one end of the connecting portion is connected with the abutting portion, and the other end of the connecting portion is connected with the second bushing; the butt joint portion is smaller than the connection portion.
4. The compressor crankshaft connecting rod mechanism of claim 2, wherein said abutment groove is circular in cross-sectional shape along a radial direction of said hollow connecting rod, and said abutment portion is cylindrical.
5. The compressor crankshaft connecting rod mechanism according to claim 2, wherein a first positioning block is provided on an end surface of the hollow connecting rod remote from the first bushing, and a second positioning block is provided on a circumferential side surface of the abutting portion; the first positioning block and the second positioning block are abutted against each other in the radial direction of the hollow connecting rod, and the second positioning block is abutted against the end face, far away from the first shaft sleeve, of the hollow connecting rod.
6. The compressor crankshaft connecting rod mechanism according to claim 1, wherein a cross-sectional shape of the mounting groove is an ellipse, and a cross-sectional shape of the mounting portion is an ellipse.
7. The compressor crankshaft connecting rod mechanism according to claim 1, wherein a side end surface of the eccentric crankshaft body to an inner cavity side surface of the mounting groove is provided with a threaded hole; the periphery of the installation part is provided with a blind hole, and the blind hole corresponds to the threaded hole.
8. The compressor crankshaft connecting rod mechanism of claim 1, wherein the mounting portion is in interference fit connection with the mounting slot.
9. A compressor, characterized by comprising a compressor crankshaft connecting rod mechanism according to any one of claims 1 to 8.
10. A refrigeration apparatus, characterized by comprising a compressor according to claim 9.
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a compressor crankshaft connecting rod mechanism, a compressor and refrigeration equipment.
Background
The compressor is a key part in refrigeration equipment, and with the continuous improvement of energy-saving and environment-friendly requirements, people need to be small in size, energy-saving and power-saving, and meanwhile, higher refrigeration efficiency needs to be kept. In a compressor, a crankshaft is usually rotated by a motor, and a suction cylinder of the compressor is driven by a crankshaft connecting rod mechanism connected to the crankshaft to drive heat energy to flow, thereby transferring the heat energy from one location to another.
Most of the traditional piston compressors adopt an integral connecting rod structure, and in order to facilitate assembly, a cylinder seat of the piston compressor is provided with a crescent groove, and the crescent groove provides assembly space for a crankshaft connecting rod mechanism. However, such measures increase the material cost and the processing cost of the cylinder block, and the verticality of the two holes of the cylinder hole and the shaft hole of the cylinder block is reduced during the processing and honing process of the cylinder block, so that the abrasion and the power consumption of the piston are increased during the operation process of the compressor. Furthermore, the effective pumping volume of the cylinder in the cylinder block is reduced, and the refrigeration efficiency of the compressor is reduced.
Disclosure of Invention
This application provides a compressor crankshaft link mechanism, compressor and refrigeration plant to the shortcoming of current mode for solve the integral link mechanism that prior art exists, owing to need set up the crescent moon groove for the assembly and the lower technical problem of refrigeration efficiency who leads to.
In a first aspect, an embodiment of the present application provides a compressor crankshaft connecting rod mechanism, including a connecting rod and a crankshaft, wherein the connecting rod is connected to a disk surface of the crankshaft;
the connecting rod comprises a first connecting rod, a pin and a second connecting rod, and the first connecting rod and the second connecting rod are detachably connected through the pin;
the crankshaft comprises an eccentric crankshaft body and an eccentric shaft, and the eccentric shaft is detachably mounted on the disc surface of the eccentric crankshaft body;
the disc surface of the eccentric crankshaft body is provided with an installation groove;
each eccentric shaft comprises a mounting part and an eccentric connecting shaft, the eccentric connecting shaft is arranged on one axial end face of the mounting part, and a preset distance is reserved between the central shaft of the eccentric connecting shaft and the central shaft of the mounting part; the mounting part is matched with the mounting groove and is arranged in the mounting groove;
the second connecting rod is sleeved on the eccentric connecting shaft and can rotate relative to the eccentric connecting shaft at the joint.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the first connecting rod includes a first shaft sleeve and a hollow connecting rod, one end of the hollow connecting rod is integrally connected with the first shaft sleeve, and an axial direction of the hollow connecting rod is perpendicular to an axial direction of the first shaft sleeve; the hollow connecting rod is provided with a butt joint groove with a preset depth, and a first pin hole penetrating through the hollow connecting rod is formed in the side surface of the hollow connecting rod;
the second connecting rod comprises a second shaft sleeve and a butt joint part, and the butt joint part is connected with the butt joint groove in a matching manner; the butt joint part is provided with a second pin hole;
the pin is inserted into the first pin hole and the second pin hole;
the second connecting rod is pivoted with the eccentric connecting shaft through the second shaft sleeve.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the second link further includes a connecting portion, one end of the connecting portion is connected to the abutting portion, and the other end of the connecting portion is connected to the second bushing; the butt joint portion is smaller than the connection portion.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a cross-sectional shape of the abutting groove along a radial direction of the hollow connecting rod is circular, and the abutting portion is cylindrical.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a first positioning block is disposed on an end surface, away from the first shaft sleeve, of the hollow connecting rod, and a second positioning block is disposed on a circumferential side surface of the abutting portion; the first positioning block and the second positioning block are abutted against each other in the radial direction of the hollow connecting rod, and the second positioning block is abutted against the end face, far away from the first shaft sleeve, of the hollow connecting rod.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the cross-sectional shape of the mounting groove is an ellipse, and the cross-sectional shape of the mounting portion is an ellipse.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a threaded hole is formed from a side end surface of the eccentric crankshaft body to a side surface of an inner cavity of the mounting groove; the periphery of the installation part is provided with a blind hole, and the blind hole corresponds to the threaded hole.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the mounting portion is connected with the mounting groove in an interference fit manner.
In a second aspect, embodiments of the present application provide a compressor including a compressor crankshaft linkage as described in the first aspect of the present application.
In a third aspect, embodiments of the present application provide a refrigeration apparatus comprising a compressor as described in the second aspect of the present application.
The technical scheme provided in the embodiment of the invention has the following beneficial technical effects:
the compressor crankshaft connecting rod mechanism provided by the invention adopts the connecting rod with the split structure and the crankshaft with the split structure, the first connecting rod and the second connecting rod are directly and respectively butted with respective connecting parts during assembly, then the first connecting rod and the second connecting rod are butted, the connecting rod can be assembled in the cylinder body of the compressor cylinder, then the second connecting rod is connected with the eccentric shaft, and then the eccentric shaft is assembled on the crankshaft body, so that the assembly of the whole crankshaft connecting rod mechanism can be completed, a crescent groove for reducing the volume of the cylinder is not required to be arranged on the compressor cylinder, the verticality error of the cylinder hole and the shaft hole of the cylinder seat caused by honing the cylinder hole of the cylinder seat is avoided, the cost is saved, and the working efficiency of the compressor is improved.
Additional aspects and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of a partially assembled structure of a crankshaft connecting rod mechanism of a compressor according to an embodiment of the present invention;
FIG. 2 is a schematic view of an assembly structure of a connecting rod according to an embodiment of the present invention;
FIG. 3 is a schematic view of an assembly structure of a crankshaft according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first link structure according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a second link structure according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an eccentric crankshaft body according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an eccentric shaft according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Possible embodiments of the invention are given in the figures. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein by the accompanying drawings. The embodiments described by way of reference to the drawings are illustrative for the purpose of providing a more thorough understanding of the present disclosure and are not to be construed as limiting the present invention. Furthermore, if a detailed description of known technologies is not necessary for illustrating the features of the present invention, such technical details may be omitted.
It will be understood by those skilled in the relevant art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.
In the prior art, when the compressor is provided with the crankshaft connecting rod mechanism, a crescent groove needs to be arranged near the end surface of one side of the air cylinder of the compressor, and the connecting rod can be placed into the piston through the crescent groove, so that the assembly of the crankshaft connecting rod on the air cylinder seat of the compressor is realized. This crescent groove extends to the inside wall of cylinder perpendicularly from the lateral wall of cylinder, not only can reduce the working volume of cylinder, reduces the working stroke of cylinder piston to produce adverse effect to work efficiency. In addition, the additional processing increases the cost of the mold or the processing cost, and the size of the cylinder may be deformed during the processing.
The invention provides a compressor crankshaft connecting rod mechanism and a compressor, and aims to solve the technical problems in the prior art.
The technical solution of the present invention and how to solve the above technical problems will be described in detail with specific examples.
The embodiment of the first aspect of the present application provides a crankshaft connecting rod mechanism of a compressor, as shown in fig. 1 to 3, including a
Each eccentric shaft 220 includes a mounting portion 221 and an eccentric connecting shaft 222, the eccentric connecting shaft 222 being disposed on an axial one-side end surface of the mounting portion 221, a central axis of the eccentric connecting shaft 222 and a central axis of the mounting portion 221 having a predetermined interval therebetween; the mounting portion 221 is matched with the mounting groove 211, and the mounting portion 221 is disposed in the mounting groove 211. The second connecting
The crankshaft connecting rod mechanism of the compressor provided by the invention adopts the connecting
Alternatively, as shown in fig. 2, the
As shown in fig. 2 and 4, by inserting the
Optionally, in an implementation manner of the embodiment of the first aspect, as shown in fig. 5, the
Optionally, in combination with the foregoing implementation manners, in some implementation manners of the first aspect embodiment, as shown in fig. 2 and 4, the cross-sectional shape of the abutting
Optionally, with reference to the foregoing implementation manners, in another implementation manner of the embodiment of the first aspect, as shown in fig. 2 and fig. 5, a
As described above, the crankshaft 200 provided in the embodiment of the first aspect of the present application specifically includes the eccentric crankshaft body 210 and the eccentric shaft 220, and as shown in fig. 3, 6 and 7, the central axis of the eccentric connecting shaft 222 and the central axis of the mounting portion 221 are in the same plane and parallel to each other, and have a certain distance therebetween, which can be specifically set according to actual needs, and the preset distance has different sizes for different types of compressors.
The compressor crankshaft 200 provided by the above embodiment of the present application is a separable and assemblable crankshaft 200, wherein the eccentric crankshaft body 210 is provided with the recessed mounting groove 211, rather than the raised mounting protrusion, so that when the crankshaft connecting rod mechanism is mounted, the
Furthermore, the eccentric shaft 220 of the present application is not integrally formed with the eccentric crankshaft body 210, and the eccentric connecting shaft 222 on the eccentric shaft 220 can be specifically adjusted according to actual needs, the eccentric shaft 220 of each size corresponds to a compressor of one model, specifically can be a piston compressor, only the machining size of the eccentric shaft 220 needs to be adjusted, and a new mold does not need to be provided for the eccentric crankshaft body 210. Therefore, the compressor crankshaft 200 of the application has good adaptability, can save the die sinking cost, and has higher use flexibility.
Optionally, in some implementations of embodiments of the first aspect of the present application, a cross-sectional shape of the mounting groove 211 is an ellipse, and a cross-sectional shape of the mounting portion 221 is an ellipse. The elliptical cross-sectional shape is adopted, so that the eccentric shaft 220 can be fixedly butted according to a set position, the eccentric shaft 220 is accurately installed, the rotation cannot occur in the operation process, and the position deviation cannot occur due to the rotation. Of course, the cross-sectional shape of the mounting groove 211 can be other shapes, such as triangular, rectangular, etc., but an oval shape is more convenient for manufacturing.
Optionally, with reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a threaded hole is formed from a side end surface of the eccentric crankshaft body 210 to a side surface of an inner cavity of the mounting groove 211; the mounting portion 221 is provided with a blind hole on the circumferential side thereof, and the blind hole corresponds to the threaded hole. In order to fix the position of the eccentric shaft 220 mounted on the eccentric crankshaft body 210 during operation and ensure that the structural strength of the eccentric shaft and the eccentric shaft meets the design requirements and the service life requirements, the connection structure of the eccentric shaft and the eccentric shaft needs to be relatively firm. By means of the butt-jointed blind holes and threaded holes, and by adding appropriate screws into the blind holes, the eccentric shaft 220 can be firmly fixed on the eccentric crankshaft body 210.
Optionally, with reference to the first aspect and the foregoing implementation manners, in some implementation manners of embodiments of the first aspect of the present application, the mounting portion 221 is connected with the mounting groove 211 in an interference fit manner. Besides the detachable connection manner mentioned in the foregoing implementation manner, the mounting portion 221 and the mounting groove 211 can be connected by a mechanical connection manner of interference fit, and the eccentric shaft 220 and the eccentric crankshaft body 210 can be firmly connected.
Based on the same technical concept, the embodiment of the second aspect of the present application provides a compressor comprising any one of the compressor crankshaft connecting rod mechanisms as described in the first aspect of the present application. It should be noted that the present application mainly focuses on the improvement of the crankshaft connecting rod mechanism in the compressor, and does not indicate that the compressor only includes one component of the crankshaft connecting rod mechanism of the compressor, and also includes other components such as a cylinder block, a piston, and a housing, and further details are not described since the other components are known to those skilled in the relevant art.
In a third aspect of the present application, there is provided a refrigeration apparatus using the compressor provided in the embodiment of the second aspect of the present application. The refrigeration equipment can be household appliances such as a refrigerator, an ice chest, an ice cream machine or a cold drink machine and the like, and also can be large-scale equipment such as a mobile refrigerator or a freezing warehouse and the like.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
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