CN105275809B - Rotor compressor, slip sheet vibration system and air conditioner - Google Patents
Rotor compressor, slip sheet vibration system and air conditioner Download PDFInfo
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- CN105275809B CN105275809B CN201510822782.1A CN201510822782A CN105275809B CN 105275809 B CN105275809 B CN 105275809B CN 201510822782 A CN201510822782 A CN 201510822782A CN 105275809 B CN105275809 B CN 105275809B
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- 238000013016 damping Methods 0.000 description 1
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Abstract
The invention discloses a sliding vane vibration system, comprising: one end of the first vibration spring is limited by the cylinder or the shell; an intermediate mass block connected to the other end of the first vibration spring; one end of the second vibration spring is connected with the middle mass block; and the sliding sheet is connected with the other end of the second vibration spring. The sliding vane vibration system is a two-degree-of-freedom vibration system, the two-degree-of-freedom vibration system has two natural frequencies, namely a low-frequency natural frequency and a high-frequency natural frequency, and the low-frequency natural frequency and the high-frequency natural frequency effectively avoid the common working frequency range of the compressor by adjusting the mass of the intermediate mass block, the mass of the sliding vane, the rigidity of the first vibration spring and the rigidity of the second vibration spring, so that the resonance of the sliding vane vibration system can be effectively avoided, the working noise of the compressor is reduced, and the working reliability of the compressor is improved. The invention also discloses a compressor adopting the sliding vane vibration system and an air conditioner adopting the compressor.
Description
Technical Field
The invention relates to the technical field of compressor preparation, in particular to a rotor compressor, a sliding vane vibration system and an air conditioner.
Background
The rotor compressor mainly comprises an air cylinder, a rolling rotor, an eccentric shaft, a sliding sheet, a motor and the like, wherein an air suction hole and an air exhaust hole are formed in the air cylinder, the rolling rotor is arranged on the eccentric shaft, the rotor rolls along the inner wall of the air cylinder under the driving of the motor, a crescent working cavity is formed between the rolling rotor and the air cylinder, the end part of the sliding sheet is in close contact with the rotor constantly by the acting force of a spring to divide the crescent working cavity into two parts, and the sliding sheet reciprocates along a sliding sheet groove along with the rolling of the rotor.
The sliding vane and the spring form a sliding vane vibration system of the compressor, with the technical progress, a considerable part of the rotor compressors have a frequency conversion function, and the variable range of the working frequency of the motor of the frequency conversion compressor is larger. In the sliding sheet vibration system, one end of a spring is fixedly connected with a cylinder, the other end of the spring is fixedly connected with a sliding sheet, a typical single-degree-of-freedom vibration system is formed, the sliding sheet vibration system is provided with a determined sliding block mass m and a determined spring stiffness coefficient k, and the calculation formula of the natural frequency is as follows:(ωnthe natural circular frequency of the vibration system). When the compressor uses omega (omega as the motor of the compressor)Circular frequency), if the value of ω is close to or equal to ωnThe free vibration system resonates, the amplitude of the sliding sheet is increased, and impact is caused on a compressor rotor and noise is generated; at the same time, the vanes briefly disengage from the rollers, which can have an effect on the performance of the compressor.
In terms of a sliding vane vibration system in the existing rotor compressor, the natural frequency of the single-degree-of-freedom vibration system can be adjusted by changing the spring stiffness and the sliding vane mass, but the adjustment variation of the natural frequency of the sliding vane vibration system is very limited due to the limitations of the space of the compressor and the reliability and energy efficiency ratio, and the normal working frequency band of the compressor is difficult to avoid.
Therefore, how to enable the natural frequency of the sliding vane vibration system to easily avoid the normal operating frequency band of the compressor, so as to reduce the noise of the compressor and ensure the reliability of the compressor operation is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a sliding vane vibration system, so that the natural frequency of the sliding vane vibration system can be kept away from the normal operating frequency band of the compressor, thereby reducing the noise of the compressor and ensuring the reliability of the operation of the compressor.
Another object of the present invention is to provide a compressor having the vane vibration system.
Still another object of the present invention is to provide an air conditioner having the above compressor.
In order to achieve the purpose, the invention provides the following technical scheme:
a sliding vane vibration system applied to a rotor compressor comprises:
one end of the first vibration spring is limited by the cylinder or the shell;
the middle mass block is connected with the other end of the first vibration spring;
one end of the second vibration spring is connected with the middle mass block;
and the sliding sheet is connected with the other end of the second vibration spring.
Preferably, mounting grooves into which the ends of the first and second vibration springs are inserted are respectively formed at both sides of the intermediate mass.
Preferably, the intermediate mass block comprises a basic block and an additional block detachably connected with the basic block.
Preferably, connecting columns are arranged on two sides of the basic block, through holes corresponding to the connecting columns and allowing the connecting columns to pass through are formed in the additional block, and the additional block is fastened on the basic block through nuts in threaded fit with the connecting columns.
Preferably, the intermediate mass is a circular block or a square block.
Preferably, the basic block is circular, and an outer ring of the basic block is provided with an external thread for connecting the additional block; the inner ring of the additional block is provided with an internal thread matched with the external thread on the basic block, and the outer ring of the additional block is provided with an external thread for connecting the other additional block.
Preferably, the basic block is square, a screw hole is arranged on the outer edge of the basic block, a through hole corresponding to the screw hole is arranged on the additional block, and a screw which passes through the through hole and is screwed in the screw hole fastens the additional block and the basic block.
The rotor compressor disclosed in the present invention includes a vane vibration system, and the vane vibration system is the vane vibration system disclosed in any one of the above.
The air conditioner disclosed in the present invention includes a rotary compressor, and the rotary compressor is the compressor as disclosed above.
The adjusting principle of the natural frequency of the sliding vane vibration system disclosed by the invention is as follows:
the sliding vane vibration system disclosed by the invention forms a typical two-degree-of-freedom vibration system, the natural frequency of the two-degree-of-freedom vibration system is the inherent property of the system and is only related to the mass parameter and the rigidity parameter of the system, so that the natural frequency of the system is solved only by listing an undamped two-degree-of-freedom vibration differential matrix equation:
in case of synchronous motion, x1And x2The ratio of (d) is independent of time, i.e. has the same dependency on time. Let x1＝μ1×f(t)，x2＝μ2× f (t), and substituting into the matrix equation:
then there are:
solving to obtain the two-order natural frequency of the two-degree-of-freedom vibration system as follows:
according to the formula, by changing the parameter m1、m2、k1And k2Four parameters, i.e. can realize the pair omega1And ω2The four parameters are respectively the mass of the sliding sheet, the mass of the middle mass block, the rigidity of the first vibration spring and the rigidity of the second vibration spring, and only the low-frequency natural frequency omega is reduced1Increase the natural frequency omega of high frequency2The common working frequency range of the compressor can be effectively avoided.
Therefore, the sliding vane vibration system disclosed by the invention is a two-degree-of-freedom vibration system, the two-degree-of-freedom vibration system has two natural frequencies, namely a low-frequency natural frequency and a high-frequency natural frequency, and the low-frequency natural frequency and the high-frequency natural frequency can be more easily and effectively avoided from the common working frequency band of the compressor by adjusting the mass of the intermediate mass block, the mass of the sliding vane, the rigidity of the first vibration spring and the rigidity of the second vibration spring, so that the sliding vane vibration system is effectively prevented from generating resonance, the working noise of the compressor is reduced, and the working reliability of the compressor is improved.
The rotor compressor has the technical advantages corresponding to the sliding vane vibration system because the rotor compressor is provided with the sliding vane vibration system; the air conditioner adopting the rotor compressor also has the corresponding technical advantages of a sliding vane vibration system, and the details are not repeated in the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic modeling diagram of a slider vibration system disclosed in the present invention;
FIG. 2 is a schematic structural diagram of an intermediate mass according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of FIG. 2;
fig. 4 is a schematic structural diagram of an intermediate mass disclosed in another embodiment of the present invention.
Wherein,
the vibration damping device comprises a first vibration spring 1, a middle mass block 2, a second vibration spring 3, a sliding sheet 4 and a mounting groove 21.
Detailed Description
One of the cores of the present invention is to provide a sliding vane vibration system, so that the natural frequency of the sliding vane vibration system can avoid the normal operating frequency band of the compressor, thereby reducing the noise of the compressor and ensuring the reliability of the operation of the compressor.
Another core of the present invention is to provide a rotor compressor having the sliding vane vibration system.
Still another core of the present invention is to provide an air conditioner having the above-described rotary compressor.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the sliding vane vibration system disclosed in the present invention is applied to a rotor compressor, and is particularly suitable for a frequency conversion type rotor compressor with a wider operating frequency, and the sliding vane vibration system includes a first vibration spring 1, a middle mass block 2, a second vibration spring 3, and a sliding vane 4, wherein one end of the first vibration spring 1 is fixedly connected to an air cylinder, the other end is fixedly connected to the middle mass block 2, the middle mass block 2 and the air cylinder should be in sliding fit to ensure that the middle mass block 2 can move, one end of the second vibration spring 3 is fixedly connected to the middle mass block 2, the other end is fixedly connected to the sliding vane 4, and the sliding vane 4 is used for abutting against a rotor of the rotor compressor.
It can be understood by those skilled in the art that the sliding vane vibration system disclosed in the above embodiments constitutes a typical two-degree-of-freedom vibration system, and the natural frequency of the two-degree-of-freedom vibration system is a system natural property and is only related to the mass parameter and the stiffness parameter of the system, so that only the undamped two-degree-of-freedom vibration motion differential matrix equation needs to be listed for solving the system natural frequency:
in the case of synchronous motion, the ratio of x1 to x2 is independent of time, i.e., has the same dependency on time. Let x1＝μ1×f(t)，x2＝μ2× f (t), and substituting into the matrix equation:
then there are:
solving to obtain the two-order natural frequency of the two-degree-of-freedom vibration system as follows:
according to the formula, by changing the parameter m1、m2、k1And k2The four parameters can realize the pair omega1And ω2The four parameters are adjusted, namely the mass of the middle mass block 2, the mass of the sliding piece 4, the rigidity of the first vibration spring 1 and the rigidity of the second vibration spring 2, as long as the low-frequency natural frequency omega is reduced1Increase the natural frequency omega of high frequency2The common working frequency range of the compressor can be effectively avoided.
Therefore, the mass of the intermediate mass block 2, the mass of the sliding sheet 4, the rigidity of the first vibration spring 1 and the rigidity of the second vibration spring 3 are adjusted, so that the low-frequency natural frequency and the high-frequency natural frequency effectively avoid the common working frequency range of the compressor, the resonance of a sliding sheet vibration system can be effectively avoided, the working noise of the compressor is reduced, and the working reliability of the compressor is improved.
By way of example, the following are illustrated: in the existing sliding vane vibration system, the mass of the sliding vane is 0.01kg, the spring stiffness coefficient is 110g/mm, and the formula is adoptedThe natural frequency of the sliding vane vibration system can be obtained by substituting the mass coefficient and the rigidity coefficient, namely, the natural frequency is 328.33rad/s, namely 52.28Hz, the common working range of the variable frequency compressor is 25Hz-80Hz, and the natural frequency of the sliding vane vibration system is in the working frequency band of the compressor, so that the risk of resonance is existed.
In the improved invention, the mass of the sliding sheet is constant, namely m10.01kg, using an intermediate mass of 0.015kg, i.e. m20.015kg, the stiffness coefficient k of the first vibration spring145g/mm, the stiffness coefficient k of the second vibration spring2Is 160g/mm, and is substituted into the formula:
Find omega1Is 20Hz, omega2The frequency is 86Hz, and the improved sliding vane vibration system avoids the working frequency band of the compressor, thereby avoiding the occurrence of resonance, and ensuring the working reliability of the compressor while reducing the working noise of the compressor.
As shown in fig. 2 to 4, the shape of the middle mass 2 is not particularly limited, and may be a circle, a square, or another shape, such as a regular hexagon, a regular triangle, etc., and for convenience of installation, the middle mass 2 in this embodiment is provided with mounting grooves 21 on both sides thereof, into which the ends of the first vibration spring 1 and the second vibration spring 3 are inserted, respectively.
It can be derived from the above-described embodiments that changing the mass of the intermediate mass 2 allows to achieve a low natural frequency ω1And high frequency natural frequency omega2In consideration of the convenience of mass adjustment of the intermediate mass block 2 in actual production, the intermediate mass block 2 in this embodiment includes a basic block and additional blocks detachably connected to the basic block, and the purpose of adjusting the mass of the intermediate mass block 2 can be achieved conveniently and quickly by adjusting the number and mass of the additional blocks, and finally, the adjustment of the low-frequency natural frequency and the high-frequency natural frequency of the sliding piece vibration system is achieved.
In one embodiment, the two sides of the basic block are provided with connecting columns, the additional block is provided with through holes corresponding to the connecting columns, the through holes can be penetrated by the connecting columns, and nuts in threaded connection with the connecting columns fasten the additional block on the basic block.
In another embodiment, the intermediate mass block 2 is circular, so the basic block should also be circular, while the additional block is circular in nature, the outer ring of the basic block is provided with external threads for connecting the additional block, the inner ring of the additional block is provided with internal threads adapted to the external threads of the basic block, the outer ring is provided with external threads for connecting another additional block, and the basic block and the additional block are connected by threads.
Meanwhile, in the embodiment of the invention, the embodiment that the middle mass block 2 is square is also disclosed, the basic block is square, the outer edge of the basic block is provided with a screw hole, the additional block is provided with a through hole corresponding to the screw hole, and the additional block and the basic block are fastened by a screw which passes through the through hole and is screwed in the screw hole.
In addition, a person skilled in the art can also use other forms to realize the dismounting between the basic block and the additional block, which is not listed here, and it should be understood that the low-frequency natural frequency and the high-frequency natural frequency can be adjusted conveniently and quickly as long as the fast dismounting of the additional block on the basic block can be realized.
The invention also discloses a compressor, which comprises a sliding vane vibration system, wherein the sliding vane vibration system is disclosed in any embodiment.
Because the compressor adopts the sliding vane vibration system, the compressor has the corresponding technical advantages of the sliding vane vibration system.
Meanwhile, the invention also discloses an air conditioner, wherein the compressor of the air conditioner adopts the compressor in the embodiment, and the compressor has the technical advantage of a sliding vane vibration system, so that the air conditioner also has the technical advantage consistent with the improved sliding vane vibration system, and the details are not repeated herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A sliding vane vibration system for use in a rotary compressor, comprising:
a first vibration spring (1) with one end limited by a cylinder or a shell;
an intermediate mass block (2) connected to the other end of the first vibration spring (1);
a second vibration spring (3) having one end connected to the intermediate mass (2);
and the sliding piece (4) is connected with the other end of the second vibrating spring (3), and the intermediate mass block (2) comprises a basic block and an additional block which is detachably connected with the basic block.
2. The sliding plate vibration system of claim 1, wherein both sides of the middle mass (2) are respectively provided with mounting grooves (21) into which the ends of the first vibration spring (1) and the second vibration spring (3) can be inserted.
3. The sliding piece vibration system as claimed in claim 1, wherein the base block is provided with connection columns at both sides, the additional block is provided with through holes corresponding to the connection columns and allowing the connection columns to pass through, and nuts threadedly engaged with the connection columns fasten the additional block to the base block.
4. Sliding-vane vibration system according to claim 3, characterized in that the intermediate mass (2) is a circular or square block.
5. The sliding piece vibration system as recited in claim 1, wherein said basic block is circular and an outer thread for connecting said additional block is provided on an outer ring of said basic block; the inner ring of the additional block is provided with an internal thread matched with the external thread on the basic block, and the outer ring of the additional block is provided with an external thread for connecting the other additional block.
6. The sliding plate vibration system as claimed in claim 1, wherein said basic block is square, and a screw hole is provided on the outer edge of said basic block, and a through hole corresponding to said screw hole is provided on said additional block, and a screw passing through said through hole and tightened in said screw hole fastens said additional block and said basic block.
7. A rotor compressor comprising a sliding vane vibration system, wherein the sliding vane vibration system is as claimed in any one of claims 1 to 6.
8. An air conditioner comprising a rotary compressor, wherein the rotary compressor is the compressor as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822782.1A CN105275809B (en) | 2015-11-23 | 2015-11-23 | Rotor compressor, slip sheet vibration system and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510822782.1A CN105275809B (en) | 2015-11-23 | 2015-11-23 | Rotor compressor, slip sheet vibration system and air conditioner |
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| Publication Number | Publication Date |
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| CN105275809A CN105275809A (en) | 2016-01-27 |
| CN105275809B true CN105275809B (en) | 2017-09-22 |
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| CN201510822782.1A Active CN105275809B (en) | 2015-11-23 | 2015-11-23 | Rotor compressor, slip sheet vibration system and air conditioner |
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| CN113982925B (en) * | 2021-11-08 | 2023-05-05 | 珠海格力电器股份有限公司 | Roller assembly, compressor and air conditioner with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929795A (en) * | 1982-08-13 | 1984-02-17 | Toshiba Corp | Rotary type compressor |
| KR19990081137A (en) * | 1998-04-27 | 1999-11-15 | 윤종용 | Hermetic Rotary Compressor |
| CN2751163Y (en) * | 2004-12-13 | 2006-01-11 | 周海云 | Refrigerating compressor |
| EP2884108B1 (en) * | 2012-08-09 | 2018-11-07 | Toshiba Carrier Corporation | Rotary compressor and refrigeration cycle apparatus |
| CN205136009U (en) * | 2015-11-23 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor compressor, gleitbretter vibration system and air conditioner |
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Effective date of registration: 20170714 Address after: 519000 Guangdong city of Zhuhai Province Qianshan Applicant after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Applicant after: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI Address before: 519070 Guangdong city of Zhuhai province Rooster Hill Road No. 789 Building 9 (Science Building) Applicant before: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI |
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