Rotary compressor and refrigeration cycle system
阅读说明:本技术 旋转压缩机和制冷循环系统 (Rotary compressor and refrigeration cycle system ) 是由 小津政雄 王玲 于 2020-06-18 设计创作,主要内容包括:本发明公开了一种旋转压缩机和制冷循环系统,所述旋转压缩机包括机壳、设在机壳内且具有曲轴的电机和设在机壳内且由电机的曲轴驱动的压缩机构,所述压缩机构包括具有缸室和滑片槽的气缸、在缸室内偏心旋转的活塞、滑片和弹性件,滑片在滑片槽内可往复移动,滑片的前端部与活塞的外周面抵接以将缸室分为吸入室和压缩室,滑片包括在曲轴的轴向上叠置的至少三个滑片板,相邻滑片板在滑片的往复移动方向上可相对移动,弹性件朝向活塞按压滑片以使滑片的前端部与活塞的外周面抵接。本发明的旋转压缩机可以减小滑片与活塞之间的间隙,减少压缩腔中高压气体向低压腔泄露的气体量,提高压缩机性能,减少制冷循环系统制冷量的下降量。(The invention discloses a rotary compressor and a refrigeration cycle system, wherein the rotary compressor comprises a shell, a motor which is arranged in the shell and is provided with a crankshaft, and a compression mechanism which is arranged in the shell and is driven by the crankshaft of the motor, the compression mechanism comprises an air cylinder with a cylinder chamber and a slide sheet groove, a piston which eccentrically rotates in the cylinder chamber, a slide sheet and an elastic piece, the slide sheet can reciprocate in the slide sheet groove, the front end part of the slide sheet is abutted with the peripheral surface of the piston to divide the cylinder chamber into a suction chamber and a compression chamber, the slide sheet comprises at least three slide sheet plates which are overlapped in the axial direction of the crankshaft, the adjacent slide sheet plates can relatively move in the reciprocating direction of the slide sheet, and the elastic piece presses the slide sheet towards the piston to enable the front end part of the slide sheet to be abutted with the peripheral surface of. The rotary compressor can reduce the clearance between the sliding vane and the piston, reduce the gas quantity leaked from high-pressure gas in the compression cavity to the low-pressure cavity, improve the performance of the compressor and reduce the descending quantity of the refrigerating capacity of the refrigerating cycle system.)
1. A rotary compressor, comprising:
a housing;
a motor disposed within the housing and having a crankshaft; and
a compression mechanism disposed within the housing and driven by the crankshaft of the motor, the compression mechanism having:
the air cylinder is internally provided with a cylinder chamber and a slide sheet groove;
a piston eccentrically rotating within the cylinder chamber;
a slide plate, which is reciprocatingly movable in the slide plate groove, a front end portion of which abuts against an outer circumferential surface of the piston to divide the cylinder chamber into a suction chamber and a compression chamber, the slide plate including at least three slide plate plates stacked in an axial direction of the crankshaft, adjacent slide plate plates being relatively movable in a reciprocating direction of the slide plate;
and the elastic piece presses the sliding piece towards the piston so that the front end part of the sliding piece is abutted against the outer peripheral surface of the piston.
2. The rotary compressor according to claim 1, wherein the number of the vane plates is n, the number of the elastic members is n-1, wherein n is a natural number of 3 or more, and each of the elastic members abuts against rear ends of adjacent two of the vane plates.
3. The rotary compressor of claim 2, wherein the rear end of the vane plate is provided with a recess, and the front end of each of the elastic members abuts in the recess of the adjacent vane plate.
4. The rotary compressor of claim 3, wherein the vane plates include a first vane plate, a second vane plate, and a third vane plate that are arranged adjacent to each other in the axial direction of the crankshaft, rear ends of the first vane plate and the third vane plate are each provided with at least one of the recesses, a rear end of the second vane plate is provided with at least two of the recesses, the at least two recesses of the second vane plate are arranged at intervals in the axial direction of the crankshaft,
the elastic member comprises a first elastic member and a second elastic member, the front end of the first elastic member abuts against the concave part of the first slide plate and one concave part of the second slide plate, and the front end of the second elastic member abuts against the other concave part of the second slide plate and the concave part of the third slide plate.
5. The rotary compressor of any one of claims 1 to 4, wherein the elastic member is a spring.
6. The rotary compressor of any one of claims 1 to 4, wherein the vane plates are substantially square plates, and a plurality of the vane plates are stacked in their width direction.
7. The rotary compressor of claim 6, wherein a plurality of the vane plates are substantially equal in width.
8. The rotary compressor of any one of claims 1 to 4, wherein a relative moving distance between adjacent vane plates is equal in a reciprocating moving direction of the vane.
9. The rotary compressor of claim 1, wherein an outer periphery of the piston abuts against a lower side of a front end of the vane plate when the piston is at a maximum inclination angle.
10. A refrigeration cycle system comprising a compressor, a condenser, an expansion valve, an evaporator, and a gas-liquid separator provided between the expansion valve and the evaporator, wherein the compressor is a rotary compressor according to any one of claims 1 to 8.
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to a sliding vane assembly, a rotary compressor and a refrigeration cycle system.
Background
Rotary compressors typically include a casing, a motor assembly and a compression mechanism, wherein the slide of the compression mechanism reciprocates in a slide groove of the cylinder, a spring is provided at the rear end of the slide, the spring presses the slide, whereby the front end of the slide abuts the outer peripheral surface of the piston in the compression chamber.
Disclosure of Invention
The present invention is based on the discovery and recognition by the inventors of the following facts and problems:
the inventor finds that when the compressor runs at a high speed, the crankshaft deforms to cause the piston to incline, so that the gap between the piston and the front end of the sliding sheet is increased, high-pressure gas in a compression cavity is easy to leak to a low-pressure cavity, the performance of the compressor is affected, and the refrigerating capacity of a refrigerating cycle is reduced. To this end, an aspect of the present invention provides a rotary compressor which can reduce a gap between a vane and a piston, reduce an amount of gas of high pressure gas in a compression chamber leaking to a low pressure chamber, improve performance of the compressor, and reduce a decrease amount of a cooling capacity of a refrigeration cycle system.
In another aspect of the present invention, a refrigeration cycle system is also provided.
A rotary compressor according to an embodiment of a first aspect of the present invention includes: a housing; a motor disposed within the housing and having a crankshaft; and a compression mechanism provided in the casing and driven by a crankshaft of the motor, the compression mechanism having: the air cylinder is internally provided with a cylinder chamber and a slide sheet groove; a piston eccentrically rotating within the cylinder chamber; a slide plate, which is reciprocatingly movable in the slide plate groove, a front end portion of which abuts against an outer circumferential surface of the piston to divide the cylinder chamber into a suction chamber and a compression chamber, the slide plate including at least three slide plate plates stacked in an axial direction of the crankshaft, adjacent slide plate plates being relatively movable in a reciprocating direction of the slide plate; and the elastic piece presses the sliding piece towards the piston so that the front end part of the sliding piece is abutted against the outer peripheral surface of the piston.
According to the rotary compressor provided by the embodiment of the invention, the sliding sheet is arranged in the sliding sheet groove in the compression mechanism and is formed by stacking at least three sliding sheet plates, so that the three sliding sheet plates can move relatively. The flexibility of the sliding sheet is improved by superposing the three sliding sheet plates, the gap between the sliding sheet and the piston can be reduced, the quantity of gas leaked from high-pressure gas in the compression cavity to the low-pressure cavity is reduced, the performance of the compressor is improved, and the descending quantity of the refrigerating capacity of the refrigerating cycle system is reduced.
In some embodiments, the number of the sliding sheet plates is n, the number of the elastic pieces is n-1, where n is a natural number greater than or equal to 3, and each elastic piece abuts against the rear ends of two adjacent sliding sheet plates.
In some embodiments, the rear end of the slide plate is provided with a recess, and the front end of each elastic member abuts in the recess of the adjacent slide plate.
In some embodiments, the sliding plate includes a first sliding plate, a second sliding plate and a third sliding plate which are adjacently arranged in sequence in the axial direction of the crankshaft, the rear ends of the first sliding plate and the third sliding plate are each provided with at least one recess, the rear end of the second sliding plate is provided with at least two recesses, the at least two recesses of the second sliding plate are arranged at intervals in the axial direction of the crankshaft, the elastic member includes a first elastic member and a second elastic member, the front end of the first elastic member abuts against the recess of the first sliding plate and one recess of the second sliding plate, and the front end of the second elastic member abuts against the other recess of the second sliding plate and the recess of the third sliding plate.
In some embodiments, the resilient member is a spring.
In some embodiments, the slider plate is a substantially square plate, and a plurality of the slider plates are stacked in their width direction.
In some embodiments, a plurality of the slide plate plates are substantially equal in width.
In some embodiments, the relative movement distance between adjacent slide plates is equal in the reciprocating direction of the slide.
In some embodiments, the outer circumference of the piston abuts the underside of the leading end of the slide plate when the piston is at the maximum tilt angle.
A refrigeration cycle system according to an embodiment of a second aspect of the present invention includes a compressor, a condenser, an expansion valve, an evaporator, and a gas-liquid separator provided between the expansion valve and the evaporator, the compressor being the rotary compressor described in any of the above embodiments.
Drawings
Fig. 1 is a schematic view of a structure of a longitudinal section of a rotary compressor according to an embodiment of the present invention, and a schematic view of a refrigeration cycle system to which the rotary compressor is connected.
Fig. 2 is a schematic view of a compression mechanism of the rotary compressor of fig. 1.
FIG. 3 is a schematic diagram of an example of a slider of the compression mechanism of FIG. 2.
Fig. 4 is a schematic structural view of another example of a vane of the compression mechanism of fig. 2.
Fig. 5 is a schematic view showing a structure of a compressing mechanism in the related art.
Reference numerals:
the rotary compressor 1, the casing 2, the exhaust pipe 3, the
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A rotary compressor and a refrigeration cycle system and a vane assembly according to an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 to 4, a rotary compressor 1 according to an embodiment of the present invention includes a casing 2, a motor 6, and a
The motor 6 is provided in the housing 2 and has a
The
The
The
The
The
According to the rotary compressor provided by the embodiment of the invention, the sliding sheet is arranged in the sliding sheet groove in the compression mechanism and is formed by stacking at least three sliding sheet plates, so that the three sliding sheet plates can move relatively. The flexibility of the sliding sheet is improved by superposing the three sliding sheet plates, the gap between the sliding sheet and the piston can be reduced, the quantity of gas leaked from high-pressure gas in the compression cavity to the low-pressure cavity is reduced, the performance of the compressor is improved, and the descending quantity of the refrigerating capacity of the refrigerating cycle system is reduced.
In some embodiments, there are n slide plates, the
As shown in fig. 3 and 4, n sliding vane plates are stacked in the axial direction of the
In some embodiments, as shown in fig. 3 and 4, the rear end of the slide plate is provided with a recess 14, and the front end of each
As shown in fig. 3 and 4, the left end of the
In some embodiments, the sliding plate includes a first
As shown in fig. 3 and 4, the first
In some embodiments, the
In some embodiments, as shown in fig. 3 and 4, the slider plate is a substantially square plate, and a plurality of slider plates are stacked in their width direction (up-down direction in fig. 1).
In some embodiments, as shown in fig. 3 and 4, the plurality of slide plate widths are substantially equal.
In some embodiments, as shown in fig. 4, the first, second, and
In some embodiments, the outer circumference of the
As shown in fig. 4, the first, second, and
In some embodiments, as shown in fig. 1, the rotary compressor 1 is composed of a motor 6 housed in a hermetic casing 2 having an opening of a discharge pipe 3, and a
The
The
A
The upper end of the
The sliding
The
Preferably, by enlarging the up-down dimension H of the
Preferably, low-pressure gas sucked by the
Preferably, the merged high-pressure gas in the
In some embodiments, as shown in fig. 2, an
Preferably, when the rotation speed of the
In some embodiments, as shown in fig. 3, the sliding
The
When the
When the vertical dimension of the
In some embodiments, as shown in fig. 4, when the inclination angle of the
The right end of the slide plate is pressed by the high-pressure gas and the
In the related art, as shown in fig. 5, the outer dimension of the
In the
Although the rotary compressor of the embodiment of the present invention is described based on a single-cylinder rotary compressor, it can be easily applied to a multi-cylinder rotary compressor such as a twin cylinder.
A refrigeration cycle system according to an embodiment of the present invention will be described with reference to fig. 1.
A refrigeration cycle system according to an embodiment of the present invention includes the rotary compressor 1 of any of the above embodiments. The refrigeration cycle system further includes an exhaust pipe 3, a
The top of the casing 2 is connected to the exhaust pipe 3, and low-pressure gas sucked by the
The merged high-pressure gas of the
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 devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
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