阅读说明：本技术 压缩机 (Compressor with a compressor housing having a plurality of compressor blades ) 是由 盖蕊 付清轩 王毅强 于 2018-08-30 设计创作，主要内容包括：本发明公开了一种压缩机,所述压缩机包括：壳体、泵体和驱动电机,泵体设置在壳体内,泵体具有曲轴,曲轴具有偏心部；驱动电机设置在壳体内且用于驱动泵体,驱动电机包括：定子和转子,转子具有转子外周面和转子端面,转子外周面与转子端面的交界处形成有缺口部,从而使得转子利用缺口部平衡偏心部。根据本发明的压缩机,风摩损耗小、系统效率高,且生产工艺简单、生产成本低。(The invention discloses a compressor, which comprises: the pump body is arranged in the shell and provided with a crankshaft, and the crankshaft is provided with an eccentric part; driving motor sets up in the casing and is used for the drive pump body, and driving motor includes: the rotor is provided with a rotor peripheral surface and a rotor end surface, and a gap part is formed at the junction of the rotor peripheral surface and the rotor end surface, so that the rotor balances the eccentric part by the gap part. The compressor provided by the invention has the advantages of small wind friction loss, high system efficiency, simple production process and low production cost.)

1. A compressor, comprising:

a housing;

a pump body disposed within the housing, the pump body having a crankshaft with an eccentric portion;

driving motor, driving motor sets up just be used for the drive in the casing the pump body, driving motor includes: the rotor is provided with a rotor peripheral surface and a rotor end surface, and a gap part is formed at the junction of the rotor peripheral surface and the rotor end surface, so that the rotor balances the eccentric part by utilizing the gap part.

2. The compressor of claim 1, wherein the cutaway portion is a non-axial through cutaway portion.

3. The compressor according to claim 1, wherein a central axial cross section of the cutaway portion is triangular or rectangular.

4. The compressor according to claim 1, wherein the notched portion is one, and the notched portion and the eccentric portion are located on both sides in a radial direction of the crankshaft, respectively.

5. The compressor according to claim 1, wherein the number of the notch portions is two, one of the two notch portions and the eccentric portion are located on the same side of a crankshaft, and the other notch portion and the eccentric portion are located on both sides of the crankshaft in a radial direction.

6. The compressor of claim 1, wherein an axial height H1 of the notched portion and an axial height L1 of the rotor satisfy: H1/L1 is less than or equal to 0.14.

7. The compressor of claim 1, further comprising: a weight disposed within the notch portion.

8. The compressor of claim 7, wherein the counterweight conforms to the shape of the cutout.

9. The compressor of claim 7, wherein an upper side edge of the weight is provided with a chamfer.

10. The compressor of claim 7, further comprising: the oil baffle is arranged on the rotor and comprises a bottom wall and a baffle wall, the bottom wall is connected with the crankshaft, and the baffle wall extends upwards from the periphery of the bottom wall.

11. The compressor of claim 10, wherein the weight is integrally formed at a lower left corner and/or a lower right corner of the bottom wall, the weight fitting within the cutout portion.

12. The compressor of claim 1, further comprising: and the wind shield is arranged on the rotor and surrounds the notch part.

13. The compressor of claim 12, wherein the windshield comprises: a top wall and a peripheral wall extending downward from an outer periphery of the top wall, the peripheral wall surrounding the notch portion.

14. The compressor of claim 12, wherein the windshield comprises: a top wall and a peripheral wall, at least a portion of the peripheral wall extending upward from an outer periphery of the top wall, another portion of the peripheral wall extending downward from the outer periphery of the top wall and surrounding the notch portion.

Technical Field

The invention relates to the technical field of compressors, in particular to a high-rotation-speed compressor.

Background

The eccentric amount of the eccentric part on the crankshaft of the compressor determines the volume of the compressor, when the compressor runs, the eccentric part of the centrifugal rotation can obviously increase the vibration and noise of the compressor, in order to balance the vibration and noise caused by the eccentric amount of the part in the running process, usually, balance blocks are assembled on the upper end surface and the lower end surface of a rotor to make the mechanical part rotate and balance, in the prior art, the self-balancing of the rotor is realized by arranging counter bores in the rotor to reduce the using amount of the corresponding balance blocks, in addition, in the recent prior art, "the rotary compressor and a motor component CN 201520288984" of the rotary compressor, a central shaft hole penetrating through the rotor along the axial direction is arranged on the rotor, and a balance gap for balancing the eccentric part of the crankshaft of the rotary compressor is arranged on the inner circumferential surface of. The inner peripheral surface of the rotor central shaft hole is provided with a groove, so that the force arm relative to the rotation center is too small, the effect of replacing the rotor balance weight is very limited (the rotor balance weight is usually arranged on the outer peripheral side of the rotor, the force arm is larger, and the required mass is smaller when the same centrifugal force is overcome), the balance effect of the balance weight is equivalent, a larger gap volume needs to be arranged, the effect is influenced, and the fixing strength of the rotor and the crankshaft tends to be deteriorated due to the penetration of the rotor center shaft.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a compressor having low wind friction loss and high system efficiency.

The compressor according to the embodiment of the present invention includes: a housing; a pump body disposed within the housing, the pump body having a crankshaft with an eccentric portion; driving motor, driving motor sets up just be used for the drive in the casing the pump body, driving motor includes: the rotor is provided with a rotor peripheral surface and a rotor end surface, and a gap part is formed at the junction of the rotor peripheral surface and the rotor end surface, so that the rotor balances the eccentric part by utilizing the gap part.

According to the compressor of the invention, the notch part is formed at the boundary of the outer peripheral surface and the end surface of the rotor, so that the eccentric part on the crankshaft is balanced by the notch part, the rotary piston can keep rotation balance, and the compressor has small wind friction loss and high system efficiency when running at high rotation speed.

According to the compressor of one embodiment of the present invention, the notch portion is a non-axial through type notch portion.

According to the compressor of one embodiment of the present invention, the central axial cross section of the notch portion is triangular or rectangular.

According to the compressor of one embodiment of the present invention, the notched portion is one, and the notched portion and the eccentric portion are respectively located on both sides of the crankshaft in the radial direction.

According to the compressor of one embodiment of the present invention, the number of the notch portions is two, one of the two notch portions and the eccentric portion are located on the same side of the crankshaft, and the other notch portion and the eccentric portion are located on two sides of the crankshaft in the radial direction, respectively.

According to the compressor of one embodiment of the present invention, the axial height H1 of the notch portion and the axial height L1 of the rotor satisfy the following condition: H1/L1 is less than or equal to 0.14.

The compressor according to an embodiment of the present invention further includes: a weight disposed within the notch portion.

Further, the shape of the balance weight is matched with the shape of the notch part.

Optionally, the upper side edge of the weight is provided with a chamfer.

The compressor according to an embodiment of the present invention further includes: the oil baffle is arranged on the rotor and comprises a bottom wall and a baffle wall, the bottom wall is connected with the crankshaft, and the baffle wall extends upwards from the periphery of the bottom wall.

Optionally, the bottom wall is integrally formed at a lower left corner and/or a lower right corner thereof with the weight, and the weight is fitted in the notch portion.

The compressor according to an embodiment of the present invention further includes: and the wind shield is arranged on the rotor and surrounds the notch part.

Optionally, the windshield comprises: a top wall and a peripheral wall extending downward from an outer periphery of the top wall, the peripheral wall surrounding the notch portion.

Optionally, the windshield comprises: a top wall and a peripheral wall, at least a portion of the peripheral wall extending upward from an outer periphery of the top wall, another portion of the peripheral wall extending downward from the outer periphery of the top wall and surrounding the notch portion.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a rotor according to a first embodiment of the present invention;

FIG. 2 is an axial cross-sectional view of the rotor of FIG. 1;

FIG. 3 is a schematic structural view of a rotor according to a second embodiment of the present invention;

FIG. 4 is an axial cross-sectional view of the rotor of FIG. 3;

fig. 5 is a sectional view of a rotor according to a third embodiment of the present invention;

fig. 6 is a sectional view of a rotor according to a fourth embodiment of the present invention;

FIG. 7 is a schematic view of the weight added in FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

FIG. 9 is a schematic view of the oil deflector added in FIG. 7;

FIG. 10 is a schematic view of a first windshield according to an embodiment of the invention;

FIG. 11 is a schematic view of a second windshield according to an embodiment of the invention;

FIG. 12 is a cross-sectional view of the windshield of FIG. 11;

fig. 13 is a schematic structural view of a compressor according to an embodiment of the present invention.

Reference numerals:

the compressor 100, the casing 1, the casing body 11, the upper cover 12, the lower cover 13, the sealed cavity 2, the pump body 3, the crankshaft 31, the long shaft 311, the eccentric portion 312, the short shaft 313, the piston 32, the cylinder 33, the main bearing 34, the sub-bearing 35, the driving motor 4, the stator 41, the rotor 42, the outer peripheral surface 421, the end surface 422, the notched portion 5, the balance weight 6, the chamfer 61, the oil baffle 7, the bottom wall 71, the baffle wall 72, the windshield 8, the top wall 81, the peripheral wall 82, the first peripheral wall 821, and the second peripheral wall 822.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

A compressor 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 13. As shown in fig. 1 to 13, a compressor 100 according to an embodiment of the present invention includes: a shell 1, a pump body 3 and a driving motor 4.

The housing 1, as shown in fig. 13, the housing 1 includes: casing body 11, upper cover 12 and lower cover 13 form airtight cavity 2 between casing body 11, upper cover 12 and the lower cover 13 to prevent that impurity such as external dust from getting into inside casing 1 and causing the influence to the normal work of pump body 3 and driving motor 4. The pump body 3 and the setting of driving motor 4 are in this airtight cavity 2, and the pump body 3 is located driving motor 4's lower left corner and/or lower right corner, and the pump body 3 includes: the crankshaft 31 includes a main shaft (a long shaft 311), an eccentric portion 312, and a sub shaft (a short shaft 313), the long shaft 311 is positioned above the eccentric portion 312 and connected to the driving motor 4, so that the rotational torque of the driving motor 4 is transmitted to the compressor 100 through the crankshaft 31, the eccentric portion 312, the piston 32, the cylinder 33, the vane, the main and sub bearings 35, and the like constitute a compression chamber, and the short shaft 313 is positioned at a lower left corner and/or a lower right corner of the eccentric portion 312 and fixed to the sub bearing 35.

The drive motor 4 is intended to drive the pump body 3 and comprises: the stator 41 and the rotor 42, wherein the stator 41 is fixed with the housing body 11, the rotor 42 is placed inside the stator 41 and can rotate relative to the stator 41, the rotor 42 has a rotor 42 outer circumferential surface 421 and a rotor 42 end surface 422, and a notch 5 is formed at the boundary of the rotor 42 outer circumferential surface 421 and the rotor 42 end surface 422, so that the rotor 42 balances the eccentric portion 312 by the notch 5. In this way, the material default of the rotor 42 is set at the boundary between the outer peripheral surface 421 and the end surface 422, so as to balance with the eccentric portion 312, and reduce or eliminate the use of the balance weight 6, thereby achieving the purposes of reducing wind consumption, improving energy efficiency, simplifying the processing technology of the rotor 42 and reducing cost.

It is noted that in the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. The first feature being "on," "over" and "above" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

Further, the notch portion 5 is a non-axial-penetrating notch portion 5, which can avoid the problem of low energy efficiency of the compressor 100 due to the need to provide a large notch volume for the axial-penetrating notch portion 5 and the defect of low fixing strength between the rotor 42 and the crankshaft 31 due to the axial notch portion 5.

Alternatively, as shown in fig. 2 and 4, the central axial section of the notch portion 5 may be triangular or rectangular, so that the notch portion 5 is simple in machining and forming process, beneficial to saving of machining time, and low in production cost. It should be noted that, the central axial cross section herein means that the intersection line of the cutting plane and the rotor end face 422 is a chord of the peripheral circle of the end face 422, and the triangular or rectangular cross section is a projection plane of the cutting plane in the axial direction.

Alternatively, as shown in the first and second embodiments shown in fig. 1 to 4, the notched portion 5 may be one, and the notched portion 5 and the eccentric portion 312 are respectively located at two sides of the crankshaft 31 in the radial direction, so that the notched portion 5 may balance the mass of the eccentric portion 312, thereby ensuring the rotation balance of the rotary piston 32, and the compressor 100 has low wind consumption and high efficiency when operating at a high rotation speed.

Alternatively, as shown in the third and fourth embodiments shown in fig. 5-6, there may be two notch portions 5, one of the two notch portions 5 and the eccentric portion 312 are located on the same side of the crankshaft 31, and the other notch portion 5 and the eccentric portion 312 are located on two radial sides of the crankshaft 31, so that by providing one notch portion 5 on the same radial side, a part of the mass of the eccentric portion 312 can be balanced, and thus the size of the notch portion 5 located on the opposite side of the eccentric portion 312 can be reduced accordingly, thereby improving the balance of the rotor 42 during the rotation motion and improving the operational reliability of the compressor 100.

Further, the axial height H1 of the notch portion 5 and the axial height L1 of the rotor 42 satisfy: H1/L1 ≦ 0.14, that is, the size of the notch 5 should be as small as possible under the condition that the notch 5 can balance the eccentric portion 312, thereby minimizing the weakening value of the strength of the rotor 42.

As shown in fig. 7 to 9, the compressor 100 according to the embodiment of the present invention may further include: the balance weight 6 is arranged in the notch part 5, so that the defects of vibration, noise and the like caused by the operation process of the eccentric part 312 are balanced.

Further, the shape of the balance weight 6 is matched with the shape of the notch portion 5, so that the balance weight 6 is conveniently placed in the notch portion 5, and the balance weight 6 is not easy to shift or shift in the operation process of the rotor 42.

Further, as shown in fig. 8, the upper side edge of the balance weight 6 may be provided with a chamfer 61, specifically, the chamfer 61 may be a right angle, and may also be a round angle, so that when the oil baffle 7 or the wind shield 8 is installed, the interference between the inner angle of the oil baffle 7 or the wind shield 8 and the balance weight 6 may be avoided.

As shown in fig. 9, the oil baffle 7 of the embodiment of the present invention is disposed on the rotor 42, and the oil baffle 7 may include a bottom wall 71 and a baffle wall 72, wherein the bottom wall 71 is connected to the crankshaft 31, and the baffle wall 72 extends upward from the outer periphery of the bottom wall 71, so that during the rotation of the rotor 42, the lubricating oil may be sprayed from the upper end of the crankshaft 31 and move in the circumferential direction under the action of centrifugal force, and the baffle wall 72 may act as a stop for the separated oil-gas mixture and make it flow downward along the gap between the stator 41 and the inner peripheral wall 82 of the housing 1, thereby achieving the recycling of the oil-gas mixture and improving the oil output of the crankshaft 31.

Further, the balance weight 6 can be integrally formed at the lower left corner and/or the lower right corner of the bottom wall 71, the balance weight 6 is matched in the notch part 5, specifically, the balance weight 6 and the oil baffle plate 7 can be integrally cast, so that the assembly process of the oil baffle plate 7 and the balance weight 6 can be simplified, the processing time can be saved, and the production efficiency can be improved.

As shown in fig. 10 and 11, the compressor 100 according to the embodiment of the present invention may further include: the windshield 8 is provided on the rotor 42, and the windshield 8 surrounds the notch 5, so that the wind resistance during operation of the compressor 100 can be effectively reduced by providing the windshield 8, and the energy efficiency of the compressor 100 can be improved.

Alternatively, as shown in fig. 10, in an embodiment, the windshield 8 may include: a top wall 81 and a peripheral wall 82, the peripheral wall 82 extending downward from the outer periphery of the top wall 81 and surrounding the notch portion 5, thereby functioning to reduce wind resistance, and in another embodiment, as shown in fig. 11 and 12, the windshield 8 may include: the top wall 81 and the peripheral wall 82, at least a portion of the peripheral wall 82 (i.e., the first peripheral wall 821) extends upward from the outer periphery of the top wall 81, and another portion of the peripheral wall 82 (i.e., the second peripheral wall 822) extends downward from the outer periphery of the top wall 81 and surrounds the notch 5, so that the wind shield 8 can play a role in reducing wind resistance and improving the oil output of the compressor 100.

In summary, according to the compressor 100 of the embodiment of the present invention, the material of the compressor is default at the boundary between the outer circumferential surface 421 and the end surface 422 of the rotor 42, so as to achieve the purpose of self-balancing the rotor 42 and reducing or eliminating the use of the balance weight 6, thereby achieving the purposes of reducing wind consumption, improving energy efficiency, simplifying the processing technology of the rotor 42, and reducing cost. Meanwhile, the moment arm of the center of mass of the notch 5 is maximized by being disposed at the outer circumferential side of the rotor 42, and thus the influence on the efficiency of the compressor 100 is less.

The specific construction and operation of other components of the compressor 100 according to embodiments of the present invention, such as the pump body 3, are known to those skilled in the art and will not be described in detail herein.

Alternatively, the compressor 100 according to the embodiment of the present invention may be a rotary compressor, and is suitable for an ultra high speed compressor having a maximum operation frequency of 9000rpm or more.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.