CN112483353B - Compressor supporting structure - Google Patents
Compressor supporting structure Download PDFInfo
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- CN112483353B CN112483353B CN202011340435.2A CN202011340435A CN112483353B CN 112483353 B CN112483353 B CN 112483353B CN 202011340435 A CN202011340435 A CN 202011340435A CN 112483353 B CN112483353 B CN 112483353B
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- Prior art keywords
- spring
- compressor
- base
- arc
- limiting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/047—Wound springs characterised by varying pitch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Compressor (AREA)
- Springs (AREA)
Abstract
The invention discloses a compressor supporting structure.A set of supporting components is arranged at the bottom of a compressor core and consists of a spring, an upper spring base and a lower spring base; the upper spring base is fixed on the bottom surface of the compressor core, and two ends of the spring are respectively connected with the upper spring base and the lower spring base. The supporting assembly is arranged at the bottom of the compressor core to reduce the amplitude of the compressor core, and the spring structure of the supporting assembly is improved, so that the spring can meet the requirements of high-frequency and low-frequency vibration of the compressor on a supporting system at the same time, the vibration of the compressor at the moment of starting and stopping is reduced, the rigidity of the spring can be changed along with the amplitude of the compressor in the running process, the supporting assembly has a better absorption effect on the vibration with smaller amplitude, and has a better inhibition effect on the vibration with larger amplitude; the invention can effectively reduce the running vibration of the compressor, increases the running reliability of the compressor and has positive promotion effect on prolonging the service life of the compressor.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a compressor supporting structure.
Background
The compressor is a machine for lifting low-pressure gas into high-pressure gas, and can be divided into a volume type compressor and a speed type compressor, and the single-cylinder reciprocating piston type compressor belongs to the volume type compressor. The single-cylinder reciprocating piston type compressor changes the internal volume of a compression cavity by a piston which reciprocates, when the single-cylinder reciprocating piston type compressor operates, the reciprocating inertia force of a machine core cannot be completely balanced, so that the machine core can vibrate, and meanwhile, a rotor of a motor can vibrate when the single-cylinder reciprocating piston type compressor operates, so that the vibration of the whole machine can be further deepened; when the compressor is started or stopped, the movement generates large torsional amplitude due to large acceleration in the two periods, so that the movement amplitude is too large. The excessive vibration of the machine core inevitably affects the work of the compressor, and even seriously affects the service life of the compressor if the machine core is not controlled.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a compressor support structure capable of reducing the amplitude of a compressor is provided.
In order to solve the technical problems, the invention adopts the technical scheme that: the compressor supporting structure comprises a compressor core, wherein at least one group of supporting components are arranged at the bottom of the compressor core, and each supporting component consists of a spring, an upper spring base and a lower spring base; the upper spring base is fixed on the bottom surface of the compressor core, and two ends of the spring are respectively connected with the upper spring base and the lower spring base.
Further, the method comprises the following steps: the spring is a variable-pitch spiral spring formed by winding a steel wire, two ends of the spring are respectively provided with a tightening ring matched with the upper spring base and the lower spring base, and a plurality of free rings are arranged between the two tightening rings.
Further, the method comprises the following steps: when the wire diameter of the spring is less than or equal to 1.5mm, the number of turns of the free ring is less than or equal to 12, and the static load is less than or equal to 100N, the shape of the spring meets the formula: s ═ 2(H/N-d) (1-N/N) + d; wherein S is the pitch of the nth circle, d is the diameter of the filament, N is the number of turns of the free circle, and H is the length of the free circle.
Further, the method comprises the following steps: when the wire diameter of the spring is more than 1.5mm, the number of free turns is more than 12, and the static load is more than 100N, the shape of the spring meets the formula: s is 3n2(H-Nd)/N3+ d; wherein S is the pitch of the nth turn, d is the filament diameter, N is the number of turns of the free turn, and H is the length of the free turn; the total height of the fastening ring is 1.5 d-2.5 d.
Further, the method comprises the following steps: the spring upper base is an integral structure formed by connecting a cylinder and an arc-shaped column, the circumferential surface of the cylinder is a first limiting surface in clearance fit with the spring, the height of the first limiting surface is equal to the height of the upper end and a tight ring of the spring, the arc radius of the arc-shaped column is between D and 3D, and D is the middle diameter of the spring.
Further, the method comprises the following steps: the base is an organic whole structure that cylinder and arc post connection are constituteed under the spring, and the periphery of base is equipped with a plurality of spacing sand grips under the spring, and the periphery that a plurality of spacing sand grips encircle base under the spring evenly sets up.
Further, the method comprises the following steps: the upper half part of the limiting convex strip is obliquely arranged, the oblique direction of the upper half part of the limiting convex strip is opposite to the rotating direction of the spring, the outer peripheral surface of the upper half part of the limiting convex strip is an arc surface tangent to the lower half part of the limiting convex strip, the radius of the arc surface is D-3D, and D is the middle diameter of the spring; the lower half of the limiting convex strip is vertically arranged, the outer peripheral surface of the lower half of the limiting convex strip forms a second limiting surface in interference fit with the spring, a screw thread opposite to the spring in the turning direction is arranged on the second limiting surface, and the height of the second limiting surface is equal to the height of the lower end of the spring and the height of the tight ring.
Further, the method comprises the following steps: the number of the supporting assemblies is four, and the four supporting assemblies are uniformly distributed at the bottom of the compressor core in a rectangular shape.
The beneficial effects of the invention are: the invention reduces the amplitude of the compressor core by arranging the supporting component at the bottom of the compressor core, improves the spring structure of the supporting component, ensures that the spring can simultaneously meet the requirements of high-frequency and low-frequency vibration of the compressor on a supporting system, reduces the vibration of the compressor at the moment of starting and stopping, can change the rigidity of the spring along with the amplitude of the compressor in the running process, has better absorption effect on the vibration with smaller amplitude, and has better inhibition effect on the vibration with larger amplitude; the invention can effectively reduce the running vibration of the compressor, increases the running reliability of the compressor and has positive promotion effect on prolonging the service life of the compressor.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic view of a spring;
FIG. 3 is a schematic view of a base on a spring;
FIG. 4 is a schematic view of a base on a spring;
labeled as: 100-compressor movement, 200-spring, 210-tightening ring, 220-free ring, 300-spring upper base, 310-first limiting surface, 400-spring lower base, 410-limiting convex strip and 420-second limiting surface.
Detailed Description
In order to facilitate understanding of the invention, the invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the compressor support structure of the present invention has four sets of support assemblies disposed at the bottom of the compressor movement 100, and the number of the support assemblies can be selected according to actual needs. The supporting component consists of a spring 200, an upper spring base 300 and a lower spring base 400; the upper spring base 300 is fixed on the bottom surface of the compressor movement 100, the lower spring base 400 is fixed on the lower housing supporting pin seat of the compressor movement 100, and both ends of the spring 200 are connected with the upper spring base 300 and the lower spring base 400, respectively. When the compressor movement 100 operates, the spring 200 of the support assembly has a buffering effect on the vibration of the compressor movement 100, and absorbs the vibration energy of the compressor movement 100, so that the compressor movement 100 is protected.
As shown in FIG. 2, the spring 200 used in the present invention is a variable pitch coil spring formed by winding a steel wire, and the pitch of the coils at both ends of the spring 200 is shortened, so that the adjacent coils at both ends of the spring 200 are closely attached, and the pitch of the coils at the middle part of the spring 200 is increased. The spring ring tightly attached to the two ends of the spring 200 is a tightening ring 210, and the spring ring between the two tightening rings 210 is a free ring 220; the tightening rings 210 at the two ends are used for connecting with the upper spring base 300 and the lower spring base 400, and the free ring 220 in the middle part plays a main role in buffering and energy dissipation. When the spring 200 adopted by the invention is arranged on the compressor movement 100 and is in a static state, the part of the free ring 220 which is not more than one third of the total length is tightly pressed; during normal operation of the compressor, the combined length of the free ring 200 is changed continuously due to the alternating load of the compressor movement 100, but at least one third of the free ring 220 is kept in an open state all the time.
The spring 200 structure employed in the present invention has two forms, depending on the static load to be borne by the compressor cartridge 100. Firstly, when the wire diameter of the spring 200 is less than or equal to 1.5mm,When the number of turns of the free ring 220 is less than or equal to 12 and the static load is less than or equal to 100N, the shape of the spring 200 satisfies the formula: s ═ 2(H/N-d) (1-N/N) + d; wherein S is the pitch of the nth turn, d is the filament diameter, N is the number of turns of the free turn 220, and H is the length of the free turn 220. Second, when the wire diameter of the spring 200 is > 1.5mm, the number of free turns 220 is > 12, and the static load is > 100N, the shape of the spring 200 satisfies the formula: s is 3n2(H-Nd)/N3+ d; wherein S is the pitch of the nth turn, d is the filament diameter, N is the number of turns of the free turn 220, and H is the length of the free turn 220; and the total height of the clamping ring 210 is 1.5 d-2.5 d.
Taking a most conventional single-cylinder reciprocating piston compressor as an example, the weight of a compressor movement is 2775g, four groups of support assemblies are adopted for supporting, the static load required to be born by the spring 200 in each group of support assemblies is 6.8N, the material adopted by the spring 200 is SWRH82B, the wire diameter D of the spring 200 is 1.3mm, the pitch D of the spring 200 is 13.6mm, the total number N of turns of the free turn 220 is 10 turns, the total length H of the free turn 220 is 35mm, and the relationship between the pitch s and the number N of turns of the free turn 220 is satisfied: s-2 (H/N-d) (1-N/N) + d. After the spring 200 with the structure is adopted, the running vibration of the compressor is reduced by 0.2m/s2And the noise is reduced by 1dB (A), the compressor is arranged on the refrigerator, and the whole running noise of the refrigerator is reduced by 2dB (A).
As shown in fig. 3, the upper spring base 300 used in the present invention is an integrated structure formed by connecting a cylinder and an arc-shaped column, the circumferential surface of the cylinder is a first limiting surface 310 in clearance fit with the spring 200, the height of the first limiting surface 310 is equal to the height of the upper end of the spring 200 and the tightening ring 210, and when the spring 200 is connected with the upper spring base 300, the arc-shaped column of the upper spring base 300 is inserted into the upper end of the spring 200 and the tightening ring 210. The arc radius of the arc-shaped column is between D and 3D; for a compressor with low back pressure, the arc radius of the arc-shaped column is between 1.5D and 3D; for a compressor with medium and high back pressure, the arc radius of the arc-shaped column is between D and 2D, and D is the middle diameter of the spring 200.
As shown in fig. 4, the spring lower base 400 used in the present invention is an integrated structure formed by connecting a cylinder and an arc-shaped column, the periphery of the spring lower base 400 is provided with a plurality of limiting protruding strips 410, and the plurality of limiting protruding strips 410 are uniformly arranged around the periphery of the spring lower base 400. The upper half part of the limiting convex strip 410 is obliquely arranged, the oblique direction of the upper half part of the limiting convex strip 410 is opposite to the screwing direction of the spring 200, the outer peripheral surface of the upper half part of the limiting convex strip 410 is an arc surface tangent to the lower half part of the limiting convex strip 410, and when the spring 200 is connected with the lower spring base 400, the cylinder and the arc column of the lower spring base 400 are inserted into the tightening ring 210 at the lower end of the spring 200. The radius of the arc surface is between D and 3D; for a compressor with low back pressure, the arc radius of the arc surface is between 1.5D and 3D; for a compressor with medium and high back pressure, the arc radius of the arc surface is between D and 2D, and D is the middle diameter of the spring 200. The lower half part of the limiting convex strip 410 is vertically arranged, the outer peripheral surface of the lower half part of the limiting convex strip 410 forms a second limiting surface 420 in interference fit with the spring 200, threads with the screwing direction opposite to that of the spring 200 are arranged on the second limiting surface 420, and the height of the second limiting surface 420 is equal to that of the lower end of the spring 200 and the tight ring 210.
After the compressor supporting structure is installed on a compressor, when the compressor is started, the compressor movement 100 generates a larger torsional force, the rotation direction of the threads of the upper limiting convex strip 410 of the lower spring base 400 is opposite to the rotation direction of the spring 200, and the lower spring base 400 can obtain a larger reverse moment, so that the amplitude of the compressor movement 100 during starting can be reduced. In the running process of the compressor, the rigidity of the spring 200 can change along with the change of the amplitude, and for the vibration with smaller amplitude, the rigidity of the spring 200 is smaller than that of a conventional equidistant spring with the same specification, so that the spring can play a better absorption role for the vibration with smaller amplitude; for vibration with larger amplitude, the rigidity of the spring 200 is higher than that of a conventional equidistant spring with the same specification, and the spring can play a better role in inhibiting vibration with larger amplitude. And the variable pitch helical spring adopted by the invention has no natural vibration frequency, and cannot conduct the resonance of the compressor movement 100, so that the resonance of the compressor movement 100 and the refrigerator body can be effectively avoided, the running vibration of the compressor can be further reduced, and the working quality of the compressor can be improved.
Claims (5)
1. Compressor bearing structure, including compressor core (100), its characterized in that: the compressor core (100) The bottom of the spring is provided with at least one group of supporting components, and each supporting component consists of a spring (200), an upper spring base (300) and a lower spring base (400); the upper spring base (300) is fixed on the bottom surface of the compressor core (100), and two ends of the spring (200) are respectively connected with the upper spring base (300) and the lower spring base (400); the spring (200) is a variable-pitch spiral spring formed by winding a steel wire, two ends of the spring (200) are fastening rings (210) respectively matched with the upper spring base (300) and the lower spring base (400), and a plurality of free rings (220) are arranged between the two fastening rings (210); when the wire diameter of the spring (200) is less than or equal to 1.5mm, the number of turns of the free ring (220) is less than or equal to 12, and the static load is less than or equal to 100N, the shape of the spring (200) satisfies the formula: s = 2(H/N-d) (1-N/N) + d; wherein S is the pitch of the nth circle, d is the diameter of the filament, N is the number of turns of the free circle (220), and H is the length of the free circle (220); when the wire diameter of the spring (200) is larger than 1.5mm, the number of turns of the free turn (220) is larger than 12, and the static load is larger than 100N, the shape of the spring (200) satisfies the formula: s =3n2(H-Nd)/N3+ d; the total height of the fastening ring (210) is 1.5 d-2.5 d.
2. The compressor support structure of claim 1, wherein: the spring upper base (300) is of an integral structure formed by connecting a cylinder and an arc-shaped column, the circumferential surface of the cylinder is a first limiting surface (310) in clearance fit with the spring (200), the height of the first limiting surface (310) is equal to the height of the upper end of the spring (200) and a tight ring (210), the arc radius of the arc-shaped column is D-3D, and D is the middle diameter of the spring (200).
3. The compressor support structure of claim 1, wherein: base (400) are the integrative structure of cylinder and arc column connection constitution under the spring, and the periphery of base (400) is equipped with a plurality of spacing sand grips (410) under the spring, and the periphery that base (400) under the spring was encircleed in a plurality of spacing sand grips (410) evenly sets up.
4. The compressor support structure of claim 3, wherein: the upper half part of the limiting convex strip (410) is obliquely arranged, the oblique direction of the upper half part of the limiting convex strip (410) is opposite to the rotating direction of the spring (200), the outer peripheral surface of the upper half part of the limiting convex strip (410) is an arc surface tangent to the lower half part of the limiting convex strip (410), the radius of the arc surface is D-3D, and D is the middle diameter of the spring (200); the lower half part of the limiting convex strip (410) is vertically arranged, the outer peripheral surface of the lower half part of the limiting convex strip (410) forms a second limiting surface (420) in interference fit with the spring (200), threads opposite to the spring (200) in the turning direction are arranged on the second limiting surface (420), and the height of the second limiting surface (420) is equal to the height of the lower end of the spring (200) and the tight ring (210).
5. The compressor support structure of claim 1, wherein: the number of the supporting components is four, and the four supporting components are uniformly distributed at the bottom of the compressor core (100) in a rectangular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011340435.2A CN112483353B (en) | 2020-11-25 | 2020-11-25 | Compressor supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011340435.2A CN112483353B (en) | 2020-11-25 | 2020-11-25 | Compressor supporting structure |
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| Publication Number | Publication Date |
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| CN112483353A CN112483353A (en) | 2021-03-12 |
| CN112483353B true CN112483353B (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011340435.2A Active CN112483353B (en) | 2020-11-25 | 2020-11-25 | Compressor supporting structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1237152A (en) * | 1984-11-07 | 1988-05-24 | Eskild Pontoppidan | Spring system having a variable spring characteristic |
| KR20100046599A (en) * | 2008-10-27 | 2010-05-07 | 엘지전자 주식회사 | Coil spring and hermetic compressor having the same and refrigerator having the same |
| CN202833796U (en) * | 2012-08-29 | 2013-03-27 | 长城汽车股份有限公司 | Oil injection pump plunger spring capable of improving fatigue strength |
| CN206017089U (en) * | 2016-06-14 | 2017-03-15 | 惠而浦股份有限公司 | Hermetic compressor and hermetic compressor suspension assembly |
| CN209908706U (en) * | 2019-06-05 | 2020-01-07 | 黄石东贝电器股份有限公司 | Compressor core strutting arrangement |
| CN111255656A (en) * | 2020-01-15 | 2020-06-09 | 加西贝拉压缩机有限公司 | Refrigerator compressor bearing structure with damping effect |
-
2020
- 2020-11-25 CN CN202011340435.2A patent/CN112483353B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1237152A (en) * | 1984-11-07 | 1988-05-24 | Eskild Pontoppidan | Spring system having a variable spring characteristic |
| KR20100046599A (en) * | 2008-10-27 | 2010-05-07 | 엘지전자 주식회사 | Coil spring and hermetic compressor having the same and refrigerator having the same |
| CN202833796U (en) * | 2012-08-29 | 2013-03-27 | 长城汽车股份有限公司 | Oil injection pump plunger spring capable of improving fatigue strength |
| CN206017089U (en) * | 2016-06-14 | 2017-03-15 | 惠而浦股份有限公司 | Hermetic compressor and hermetic compressor suspension assembly |
| CN209908706U (en) * | 2019-06-05 | 2020-01-07 | 黄石东贝电器股份有限公司 | Compressor core strutting arrangement |
| CN111255656A (en) * | 2020-01-15 | 2020-06-09 | 加西贝拉压缩机有限公司 | Refrigerator compressor bearing structure with damping effect |
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| CN112483353A (en) | 2021-03-12 |
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