CN114198310A - Self-adaptive balance adjusting assembly and compressor comprising same - Google Patents
Self-adaptive balance adjusting assembly and compressor comprising same Download PDFInfo
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- CN114198310A CN114198310A CN202111553078.2A CN202111553078A CN114198310A CN 114198310 A CN114198310 A CN 114198310A CN 202111553078 A CN202111553078 A CN 202111553078A CN 114198310 A CN114198310 A CN 114198310A
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- compressor
- adjustment
- electromagnet
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- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 230000003044 adaptive effect Effects 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims abstract description 7
- 230000002441 reversible effect Effects 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 230000010354 integration Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 9
- 230000005611 electricity Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002337 anti-port Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/807—Balance weight, counterweight
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides an adaptive balance adjusting assembly and a compressor comprising the same. The adaptive balance adjustment assembly includes: the upper bracket comprises an axial extension part, a coil is arranged on the axial extension part, and an electric brush is connected to the coil; the balance assembly comprises a balance block, a permanent magnet and an electric brush ring, wherein the balance block is of a cylindrical structure, the inner diameter of a first end of the balance block is reduced to form a connecting end, a coil extends into the balance block from a second end of the balance block, the permanent magnet is arranged on the balance block, induced voltage is generated in the coil, the balance block is provided with the electric brush ring, and the electric brush is in sliding electrical connection with the electric brush ring; the balance weight is provided with a balance weight adjusting mechanism, the balance weight adjusting mechanism is electrically connected with the electric brush ring, and the balance weight adjusting mechanism adjusts the mass center of the balance weight according to the size of the induction voltage. The invention can accurately adjust the mass center of the balance block according to the rotating speed of the compressor, the components are integrated on the upper bracket and the balance block, and the main shaft is used as a power source, so the structure is compact, and the integration level is high.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a self-adaptive balance adjusting assembly and a compressor comprising the same.
Background
The scroll compressor is widely applied to central air conditioners such as commercial multi-split air conditioners due to the characteristics of large cold quantity range, low running noise and the like; with the continuous development of the technology, the scroll compressor is updated in the direction of high speed and light weight. In order to realize high speed and light weight, most of multi-connected scroll compressors adopt asymmetric vortex line design, compression cavities are not symmetrical in the operation process of the compressor, the radial pressures of gas in different compression cavities on a pump body are different and cannot be mutually counteracted, so that a radial resultant force of the compression cavities on the pump body exists in the operation process of the compressor except the unbalance amount of the structure of the compressor, the larger the operation frequency of the compressor is, the larger the influence of the resultant force on the whole balance is, and the influence of the gas force on the compressor needs to be considered after the operation frequency of the compressor reaches a certain height.
With the development of the technology, the operation frequency of the scroll compressor is wider and wider; the pump body part of the scroll compressor is usually positioned above the whole machine, a positive displacement oil pump is usually used for supplying oil to the pump body, and the oil supply efficiency of the positive displacement oil pump is in positive correlation with the running speed of the compressor. When the compressor is started and operated at low frequency, the operation speed is low, the oil pumping quantity of the oil pump is low, oil cannot reach a pump body in time, and abrasion is easy to occur; in order to solve the problem, the compressor needs to be started in a reverse rotation mode, the pump body is static when the compressor rotates in the reverse rotation mode, the main shaft only drives the oil pump to work, oil can enter the pump body to be lubricated in advance, and then the compressor rotates in the forward rotation mode again. However, the balance adjustment device of the existing compressor generally only adjusts forward rotation, and is difficult to perform effective self-adaptive balance adjustment in the process of reverse rotation, or a better adjustment effect can be achieved by a complex structure or control logic.
Disclosure of Invention
In view of this, the present invention provides a self-adaptive balance adjustment assembly and a compressor including the same, which at least solve the technical problem in the prior art that the forward and reverse rotation cannot be self-adaptive adjusted, specifically:
in a first aspect, the present invention provides an adaptive balance adjustment assembly for adjusting dynamic balance of a compressor during operation, comprising:
the upper bracket comprises an axial extension part, a coil is arranged on the axial extension part, and an electric brush is connected to the coil;
the balancing component comprises a balancing block, the balancing block is of a cylindrical structure, the inner diameter of a first end of the balancing block is reduced to form a connecting end used for being connected with a main shaft of the compressor, the coil extends into the balancing block from a second end of the balancing block,
the balance assembly also comprises a permanent magnet which is arranged on the balance block, the permanent magnet rotates along with the balance block to generate induced voltage in the coil, an electric brush ring is arranged on the balance block, and the electric brush is in sliding electrical connection with the electric brush ring;
the balance block is provided with a balance weight adjusting mechanism, the balance weight adjusting mechanism is electrically connected with the electric brush ring, and the balance weight adjusting mechanism adjusts the mass center of the balance block according to the size of the induction voltage.
Further optionally, a connecting hole is formed on the connecting end, a counterweight section and a hollow section are formed on the periphery of the connecting hole, an adjusting groove is formed on the end surface of the counterweight section,
the counterweight adjustment mechanism comprises a first adjustment mechanism comprising an adjustment substance flowably disposed within the adjustment tank, and a conduction valve disposed within the adjustment tank, the conduction valve dividing the adjustment tank into a high potential region and a low potential region,
the conducting valve comprises a one-way conducting channel and an electromagnetic conducting channel,
the unidirectional conduction channel enables the high potential area to be communicated with the low potential area in a unidirectional way, the electromagnetic conduction channel controls the conduction of the low potential area to the high potential area by an electromagnetic valve and can control the conduction flow,
the solenoid valve is electrically connected to the brush ring.
Further optionally, the adjusting groove is arranged along the radial direction of the connecting end and is located at the middle position in the circumferential direction of the counterweight segment,
the high potential area is positioned on one side far away from the connecting hole, the low potential area is positioned on one side close to the connecting hole,
the regulating substance can flow into the low potential area from the high potential area through the unidirectional conduction channel under the action of gravity, and can also flow into the high potential area from the low potential area through the electromagnetic conduction channel under the action of centrifugal force.
Further optionally, the brush comprises a plurality of contact blades,
the brush ring comprises a plurality of conducting rings, each conducting ring comprises a forward conducting ring, a reverse conducting ring and a bidirectional conducting ring, and each contact piece is abutted to one conducting ring.
Further optionally, the counterweight adjustment mechanism further comprises a second adjustment mechanism, wherein the second adjustment mechanism is electrically connected to the forward conducting ring and the reverse conducting ring,
the first adjusting mechanism is electrically connected with the bidirectional conducting ring.
Further optionally, a sliding groove is formed on the connecting end,
the second adjusting mechanism comprises a first electromagnet and a second electromagnet which are arranged at two ends of the sliding chute, and a sliding block which is arranged between the first electromagnet and the second electromagnet in a sliding way,
the first electromagnet is electrically connected with the reverse conducting ring, the second electromagnet is electrically connected with the forward conducting ring, when the balance block rotates, one of the first electromagnet and the second electromagnet is electrified to generate magnetism,
the slider moves toward the electromagnet generating magnetism under the magnetic action.
Further optionally, the sliding groove is an arc-shaped groove formed along the circumferential direction of the connecting hole, and a corresponding central angle of the arc-shaped groove is less than or equal to 180 °.
Further optionally, the balancing assembly includes a first cover plate, and the first cover plate is fixedly disposed at the connecting end and seals the adjusting groove and the sliding groove.
Further optionally, the upper bracket further comprises a magnetic conductive sheet and a bracket cover plate,
the coils are arranged in a plurality and are attached to the outer peripheral wall of the axial extension part in series along the circumferential direction of the axial extension part,
the magnetic conductive sheets are arranged in a plurality, the magnetic conductive sheets are attached to the peripheral wall of the axial extension part and cover the coil,
the bracket cover plate is fixedly arranged at the end part of the axial extension part and fixes the magnetic conductive sheet.
Further optionally, the balancing assembly further comprises a second cover plate,
and a permanent magnet mounting groove is formed in the second end surface of the balance block, the permanent magnet is embedded into the permanent magnet mounting groove, and the second cover plate is fixedly arranged at the second end of the balance block and seals the permanent magnet mounting groove.
In a second aspect, the invention provides a compressor, which includes the above adaptive balance adjusting assembly, wherein the upper bracket is fixedly connected to an inner peripheral wall of a shell of the compressor, a connecting end of the balance weight is fixedly disposed on a main shaft of the compressor, and the balance weight and the main shaft rotate synchronously.
The invention can self-adaptively identify the running state of the compressor by matching the coil and the permanent magnet, and accurately adjust the mass center of the balance block by the magnitude of the induced voltage, so that the running dynamic balance of the compressor can be realized under different running states.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
FIG. 1 shows a schematic cross-sectional view of a compressor in accordance with an embodiment of the present invention;
FIG. 2 shows an enlarged view at A in FIG. 1;
FIG. 3 shows an exploded view of a cradle according to an embodiment of the present invention;
FIG. 4 shows an exploded view of a counterbalance assembly in accordance with an embodiment of the present invention;
FIG. 5 illustrates a schematic top view of a counterbalance according to an embodiment of the present invention;
FIG. 6 is a schematic bottom view of a counterbalance according to an embodiment of the present invention;
FIG. 7 shows an exploded view of a conduction valve according to an embodiment of the invention;
FIG. 8 shows a schematic cross-sectional view (initial state) of a first adjustment mechanism of an embodiment of the invention;
fig. 9 shows a schematic sectional view (high rotation speed state) of the first adjustment mechanism of the embodiment of the invention.
In the figure:
1. an upper bracket; 11. an axial extension; 12. a coil; 13. a magnetic conductive sheet; 14. a bracket cover plate; 141. a wire passing hole; 15. an electric brush;
2. a counterbalance; 21. a connecting end; 211. a counterweight segment; 212. a hollow-out section; 213. an adjustment groove; 2131. a high potential region; 2132. a low potential region; 2133. a conditioning substance; 214. a chute; 215. connecting holes; 22. a conduction valve; 221. a valve body; 222. a one-way valve core; 223. a valve plate; 224. a third electromagnet; 231. a first electromagnet; 232. a second electromagnet; 233. a slider; 25. a permanent magnet mounting groove; 26. a permanent magnet; 27. a second cover plate; 28. a first cover plate;
3. a main shaft; 4. a housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The invention can self-adaptively identify the running state of the compressor by matching the coil and the permanent magnet, and accurately adjust the mass center of the balance block by the magnitude of the induced voltage, so that the running dynamic balance of the compressor can be realized under different running states. The main principle is that in the running process of the compressor, the upper bracket and the balance block have relative motion relation, the electromagnetic induction effect is generated through the arranged coil and the permanent magnet, the running speed of the main shaft is converted into a current signal, and the electromagnetic valve arranged on the main balance block is controlled through the signal to adjust the mass center of the main balance block. The invention is described in detail below with reference to specific examples:
as shown in fig. 1 and 2, the present invention provides an adaptive balance adjusting assembly for adjusting dynamic balance of a compressor during operation, including:
the upper bracket 1 comprises an axial extension part 11, a coil 12 is arranged on the axial extension part 11, and an electric brush 15 is connected to the coil 12;
as shown in fig. 4, the balance assembly includes a balance weight 2, the balance weight 2 is a cylindrical structure, the inner diameter of a first end of the balance weight 2 is reduced to form a connecting end 21 for connecting with the spindle 3, the coil 12 extends into the balance weight 2 from a second end of the balance weight 2,
the balance assembly also comprises a permanent magnet 26 which is arranged on the balance block 2, the permanent magnet 26 rotates along with the balance block 2 to generate induced voltage in the coil 12, the balance block 2 is provided with an electric brush 15 ring, and the electric brush 15 is in sliding electrical connection with the electric brush 15 ring;
the balance weight 2 is provided with a balance weight adjusting mechanism, the balance weight adjusting mechanism is electrically connected with the electric brush 15 ring, and the balance weight adjusting mechanism adjusts the mass center of the balance weight 2 according to the size of the induction voltage.
When the coil 12 makes a cutting magnetic induction line movement in a magnetic field, an induced voltage is generated in the coil 12, the magnitude of the induced voltage is related to the running speed of the balance piece, and the induced voltage is positively related to the running speed of the compressor; the relation between the induction voltage and the rotating speed of the compressor can be established, the mass center of the balance weight 2 is controlled by identifying the induction voltage, and the balance coefficient is changed
Specifically, as shown in fig. 3, the lower portion of the upper bracket 1 extends axially to form an axially extending portion 11, the upper bracket 1 further includes a plurality of magnetic conductive sheets 13 and a bracket cover plate 14, the plurality of coils 12 are arranged, and the plurality of coils 12 are connected in series and attached to the outer circumferential wall of the axially extending portion 11 along the circumferential direction of the axially extending portion 11. The plurality of magnetic conductive sheets 13 are arranged, each magnetic conductive sheet 13 corresponds to one coil 12, the plurality of magnetic conductive sheets 13 are attached to the outer peripheral wall of the axial extension portion 11 and cover the coil 12, and the bracket cover plate 14 is fixedly arranged at the end portion of the axial extension portion 11 and fixes the magnetic conductive sheets 13. Preferably, a limiting projection is formed on the outer peripheral wall of the axial extension portion 11, a limiting groove is formed on the magnetic conductive sheet 13, and the limiting projection and the limiting groove cooperate to limit the magnetic conductive sheet 13 in the circumferential direction of the axial extension portion 11. The bracket cover plate 14 is of a circular ring structure, is fixed at the end of the axial extension part 11 through fasteners such as screws, and compresses the magnetic conductive sheet 13 in the axial direction through the bracket cover plate 14, so that the magnetic conductive sheet 13 is fixed on the axial extension part 11. The bracket cover 14 is formed with a wire passing hole 141 through which the brush 15 passes.
The inner diameter of the first end of the balance weight 2 is reduced to form a connecting end 21, a connecting hole 215 is formed on the connecting end 21, the connecting hole 215 is used for being connected with the main shaft 3 of the compressor, a balance weight section 211 and a hollow section 212 are formed on the periphery of the connecting hole 215, and preferably, the balance weight and the hollow section 212 are both in a semi-arc structure.
As shown in fig. 4 and 5, a portion between the connection end 21 and the second end of the weight 2 is sleeved outside the axial extension portion 11 of the upper bracket 1, a permanent magnet installation groove 25 is formed on an end surface of the second end of the weight 2, a permanent magnet 26 is embedded in the permanent magnet installation groove 25, a second cover plate 27 is fixedly disposed at the second end of the weight 2, seals the permanent magnet installation groove 25, and limits the permanent magnet 26 in the permanent magnet installation groove 25.
As shown in fig. 6, an adjustment groove 213 is formed in an end surface of the weight segment 211, and the weight adjustment mechanism includes a first adjustment mechanism including an adjustment substance 2133 that is provided in the adjustment groove 213 so as to be flowable, and a conduction valve 22 that is provided in the adjustment groove 213. The regulating substance 2133 is a fluid that can flow through the regulating groove 213 by gravity and centrifugal force, and preferably, the regulating substance 2133 is a lubricating oil that has an antirust function and does not react with the refrigerant to be used. Preferably, a part of the adjustment groove 213 is formed on the first cover 28, the part on the first cover 28 forms a bottom wall of the adjustment groove 213, and the bottom wall has a certain inclination angle, as shown in fig. 8 and 9, the conduction valve 22 divides the adjustment groove 213 into a high potential area 2131 and a low potential area 2132, the conduction valve 22 includes a one-way conduction channel and an electromagnetic conduction channel, the one-way conduction channel makes the high potential area 2131 communicate with the low potential area 2132 in a one-way manner, the electromagnetic conduction channel controls conduction of the low potential area 2132 to the high potential area 2131 by the electromagnetic valve, and can control conduction flow, and the electromagnetic valve is electrically connected with the brush 15 ring.
Preferably, the adjusting slot 213 is disposed along the radial direction of the connecting end 21 and located at the middle position of the counterweight segment 211 in the circumferential direction, the high potential area 2131 is located at the side far away from the connecting hole 215, the low potential area 2132 is located at the side close to the connecting hole 215, the adjusting substance 2133 can flow from the high potential area 2131 to the low potential area 2132 through the unidirectional conducting channel under the action of gravity, and the adjusting substance 2133 can also flow from the low potential area 2132 to the high potential area 2131 through the electromagnetic conducting channel under the action of centrifugal force.
Further, as shown in fig. 7, the conduction valve 22 includes a valve body 221, a check valve element 222 is formed on the valve body 221, a height difference and a flow guiding inclined surface exist between the high potential area 2131 and the low potential area 2132, the adjusting substance 2133 can flow from the high potential area 2131 to the low potential area 2132 through the check valve element 222 under the action of gravity, and the check valve element 222 can also prevent the adjusting substance 2133 from flowing from the low potential area 2132 to the high potential area 2131 under the action of centrifugal force.
The valve body 221 further comprises an electromagnetic valve, the electromagnetic valve comprises valve plates 223 arranged on two sides of the valve body 221 in a sliding mode and a third electromagnet 224 arranged on the top of the valve body 221, the third electromagnet 224 can absorb the valve plates 223 to move upwards when being electrified, so that electromagnetic conduction channels on two sides of the valve body 221 are opened, and the valve plates 223 can fall back and close the electromagnetic conduction channels when the third electromagnet 224 is powered off. When the electromagnetic conduction passage is opened, the regulating substance 2133 can flow back from the low potential region 2132 to the high potential region 2131, and the flow rate is controlled by controlling the opening degree or the opening time of the electromagnetic valve.
The brush 15 includes a plurality of contact pieces, and as shown in fig. 5, the ring of the brush 15 is a ring-shaped structure formed around the connection hole 215 on the inner end surface of the connection terminal 21, and correspondingly, the ring of the brush 15 includes a plurality of conduction rings including a forward conduction ring, a reverse conduction ring, and a bidirectional conduction ring, and each contact piece abuts against one conduction ring. Specifically, two-way conducting ring is annular conducting strip, and a contact of brush 15 is contradicted on two-way conducting ring to sliding contact can both realize the electricity and connect when 2 forward of balancing piece and antiport, and first adjustment mechanism's third electro-magnet 224 is connected with two-way conducting ring electricity, can both adjust the barycenter through first adjustment mechanism when 2 corotation of balancing piece and reversal. Forward conducting ring and reverse conducting ring are one-way conductive structure to forward conducting ring is the example, forms a plurality of archs or pit along its circumference on forward conducting ring, sets up the conducting layer on the first face of every arch or pit, and when forward rotating, the contact forms the electricity with first face sliding contact and is connected, and when reverse rotating, contact and second face sliding contact can not electrically conduct. Similarly, the reverse conducting ring is similar to the forward conducting ring in structure, and the conducting layers are arranged at opposite positions, so that electric connection is realized during reverse rotation, and electric conduction cannot be realized during forward rotation.
The counterweight adjusting mechanism further comprises a second adjusting mechanism, wherein the second adjusting mechanism is electrically connected with the forward conducting ring and the reverse conducting ring.
Preferably, the connecting end 21 is formed with a slide groove 214, and the second adjusting mechanism includes a first electromagnet 231 and a second electromagnet 232 disposed at both ends of the slide groove 214, and a slider 233 slidably disposed between the first electromagnet 231 and the second electromagnet 232.
First electro-magnet 231 is connected with reverse conducting ring electricity, and second electro-magnet 232 is connected with forward conducting ring electricity, and when balancing piece 2 rotated, one of first electro-magnet 231 and second electro-magnet 232 switched on produced magnetism, and slider 233 moved towards the electro-magnet that produces magnetism under the magnetic action to the realization is to the regulation of balancing piece 2 barycenter.
Preferably, the sliding groove 214 is an arc-shaped groove formed along the circumference of the connecting hole 215, and the corresponding central angle of the arc-shaped groove is less than or equal to 180 ° so as to shorten the distance between the sliding block 233 and the two electromagnets, thereby enabling effective adjustment.
Further, the balancing assembly further includes a first cover plate 28, the adjusting groove 213 and the sliding groove 214 are formed on the outer end surface of the connecting end 21, and the first cover plate 28 is fixedly disposed on the outer wall surface of the connecting end 21 and closes the adjusting groove 213 and the sliding groove 214.
The invention also provides a compressor, which comprises the self-adaptive balance adjusting component, wherein the upper bracket 1 is fixedly connected with the inner peripheral wall of the shell 4 of the compressor, the connecting end 21 of the balance block 2 is fixedly arranged on the main shaft 3 of the compressor, and the balance block 2 and the main shaft 3 synchronously rotate. The upper bracket 1 supports the orbiting scroll, and the main shaft 3 passes through the axial extension 11.
Preferably, the connecting hole 215 of balancing piece 2 and 3 interference fit of main shaft to being equipped with specific angle requirement, balancing piece 2 rotates along with main shaft 3 is synchronous, and preferably, specific angle is the semicircle barycenter of balancing piece counter weight portion and the perpendicular line of axis and the contained angle of the perpendicular line of vortex dish barycenter to the axis, and further, the contained angle generally is 180, according to its normal operating dynamic balance design, guarantees the dynamic balance of whole shafting. The first adjusting mechanism opens the conducting valve 22 from the low potential area 2132 to the high potential area 2131 in a discontinuous way, after the electromotive force reaches a preset threshold value, the conducting valve 22 opens for a short time, so that the adjusting substance 2133 can flow to the high potential area 2131, preferably, the first adjusting mechanism adjusts in multiple steps according to the rotating speed, only one part of the substance is allowed to pass through each opening, and the first adjusting mechanism opens for the same time when the rotating speed reaches specific values; the adjusting groove 213 has a certain inclination along the length direction, in a normal state (i.e. an initial state), the adjusting substance 2133 is gathered in the low potential area 2132 close to the axis of the main shaft 3 through the normally open conducting valve 22 under the action of gravity, when the main balance block 2 runs along with the main shaft 3, the centroid adjusting substance has a tendency of moving from the low potential area 2132 to the high potential area 2131 due to the action of centrifugal force, after the rotating speed reaches a set threshold value, the conducting valve 22 is opened for a short period of time, a part of the centroid adjusting substance is placed in the high potential area 2131, so that the centroid position is changed, the balance is adjusted, a plurality of threshold values can be set, and the broadband grading adjustment is realized.
When the compressor has a reverse rotation requirement, the balance coefficient needs to be changed; the main balance block 2 is provided with a positive and negative electric brush, the structure of the positive and negative electric brush is similar to a sine function, the positive and negative electric brush is different in that a conductive material is attached to one side, an insulating material is arranged on the other side, when the positive electric brush is used for positive transmission, the conductive material of the positive electric ring is discontinuously communicated with a lead, and the insulating material of the negative electric ring is contacted with a corresponding lead, and vice versa, so that the steering identification is realized. The corresponding conducting electric brush is connected with the corresponding electromagnet, so that the conducting electric brush has magnetic attraction to the balancing weight to adjust the position of the mass center to realize the adjustment of the mass center.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (11)
1. An adaptive balance adjustment assembly for adjusting the dynamic balance of a compressor during operation, comprising:
the upper bracket comprises an axial extension part, a coil is arranged on the axial extension part, and an electric brush is connected to the coil;
the balancing component comprises a balancing block, the balancing block is of a cylindrical structure, the inner diameter of a first end of the balancing block is reduced to form a connecting end used for being connected with a main shaft of the compressor, the coil extends into the balancing block from a second end of the balancing block,
the balance assembly also comprises a permanent magnet which is arranged on the balance block, the permanent magnet rotates along with the balance block to generate induced voltage in the coil, an electric brush ring is arranged on the balance block, and the electric brush is in sliding electrical connection with the electric brush ring;
the balance block is provided with a balance weight adjusting mechanism, the balance weight adjusting mechanism is electrically connected with the electric brush ring, and the balance weight adjusting mechanism adjusts the mass center of the balance block according to the size of the induction voltage.
2. The adaptive balance adjusting assembly according to claim 1, wherein the connection end is formed with a connection hole, the periphery of the connection hole is formed with a weight section and a hollow section, the end surface of the weight section is formed with an adjusting groove,
the counterweight adjustment mechanism comprises a first adjustment mechanism comprising an adjustment substance flowably disposed within the adjustment tank, and a conduction valve disposed within the adjustment tank, the conduction valve dividing the adjustment tank into a high potential region and a low potential region,
the conducting valve comprises a one-way conducting channel and an electromagnetic conducting channel,
the unidirectional conduction channel enables the high potential area to be communicated with the low potential area in a unidirectional way, the electromagnetic conduction channel controls the conduction of the low potential area to the high potential area by an electromagnetic valve and can control the conduction flow,
the solenoid valve is electrically connected to the brush ring.
3. The adaptive balance adjustment assembly of claim 2, wherein the adjustment groove is provided in a radial direction of the connection end at an intermediate position in a circumferential direction of the weight section,
the high potential area is positioned on one side far away from the connecting hole, the low potential area is positioned on one side close to the connecting hole,
the regulating substance can flow into the low potential area from the high potential area through the unidirectional conduction channel under the action of gravity, and can also flow into the high potential area from the low potential area through the electromagnetic conduction channel under the action of centrifugal force.
4. The adaptive balance adjustment assembly of claim 2, wherein the brush comprises a plurality of contact blades,
the brush ring comprises a plurality of conducting rings, each conducting ring comprises a forward conducting ring, a reverse conducting ring and a bidirectional conducting ring, and each contact piece is abutted to one conducting ring.
5. The adaptive balance adjustment assembly of claim 4, wherein the counterweight adjustment mechanism further comprises a second adjustment mechanism, wherein the second adjustment mechanism is electrically connected with the forward conducting ring and the reverse conducting ring,
the first adjusting mechanism is electrically connected with the bidirectional conducting ring.
6. The adaptive balance adjustment assembly of claim 5, wherein the connecting end has a slot formed therein,
the second adjusting mechanism comprises a first electromagnet and a second electromagnet which are arranged at two ends of the sliding chute, and a sliding block which is arranged between the first electromagnet and the second electromagnet in a sliding way,
the first electromagnet is electrically connected with the reverse conducting ring, the second electromagnet is electrically connected with the forward conducting ring, when the balance block rotates, one of the first electromagnet and the second electromagnet is electrified to generate magnetism,
the slider moves toward the electromagnet generating magnetism under the magnetic action.
7. The adaptive balance adjustment assembly of claim 6, wherein the sliding groove is an arc-shaped groove formed along a circumferential direction of the connection hole, and the arc-shaped groove has a corresponding central angle of 180 ° or less.
8. The adaptive balance adjustment assembly of claim 6, wherein the balance assembly comprises a first cover plate fixedly disposed at the connecting end and enclosing the adjustment slot and the slide slot.
9. The adaptive balance adjustment assembly of any of claims 1-8, wherein the upper bracket further comprises a magnetically permeable sheet and a bracket cover plate,
the coils are arranged in a plurality and are attached to the outer peripheral wall of the axial extension part in series along the circumferential direction of the axial extension part,
the magnetic conductive sheets are arranged in a plurality, the magnetic conductive sheets are attached to the peripheral wall of the axial extension part and cover the coil,
the bracket cover plate is fixedly arranged at the end part of the axial extension part and fixes the magnetic conductive sheet.
10. The adaptive balance adjustment assembly of any of claims 1-8, wherein the balance assembly further comprises a second cover plate,
and a permanent magnet mounting groove is formed in the second end surface of the balance block, the permanent magnet is embedded into the permanent magnet mounting groove, and the second cover plate is fixedly arranged at the second end of the balance block and seals the permanent magnet mounting groove.
11. A compressor, comprising the adaptive balance adjusting assembly as recited in any one of claims 1 to 10, wherein the upper bracket is fixedly connected to an inner peripheral wall of a housing of the compressor, a connecting end of the balance weight is fixedly disposed on a main shaft of the compressor, and the balance weight rotates synchronously with the main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111553078.2A CN114198310B (en) | 2021-12-17 | 2021-12-17 | Self-adaptive balance adjusting assembly and compressor comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111553078.2A CN114198310B (en) | 2021-12-17 | 2021-12-17 | Self-adaptive balance adjusting assembly and compressor comprising same |
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| Publication Number | Publication Date |
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| CN114198310A true CN114198310A (en) | 2022-03-18 |
| CN114198310B CN114198310B (en) | 2023-10-03 |
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| CN202111553078.2A Active CN114198310B (en) | 2021-12-17 | 2021-12-17 | Self-adaptive balance adjusting assembly and compressor comprising same |
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|---|---|---|---|---|
| JP2001119906A (en) * | 1999-10-20 | 2001-04-27 | Kokusan Denki Co Ltd | Motor |
| US20030012672A1 (en) * | 2001-07-10 | 2003-01-16 | Masato Sowa | Compressor, method and jig for balancing the same |
| CN208734552U (en) * | 2018-08-31 | 2019-04-12 | 大冶市弘丰机械制造有限公司 | A kind of adjustable compressor balance weight of center of gravity |
| CN211343290U (en) * | 2019-12-06 | 2020-08-25 | 黄石东贝电器股份有限公司 | Self-adaptive dynamic balance device for dynamic balance of crankshaft |
| CN111734637A (en) * | 2020-06-01 | 2020-10-02 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor |
| CN111969779A (en) * | 2020-08-17 | 2020-11-20 | 珠海格力电器股份有限公司 | Motor rotating shaft dynamic balance device and control method thereof, and motor |
-
2021
- 2021-12-17 CN CN202111553078.2A patent/CN114198310B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001119906A (en) * | 1999-10-20 | 2001-04-27 | Kokusan Denki Co Ltd | Motor |
| US20030012672A1 (en) * | 2001-07-10 | 2003-01-16 | Masato Sowa | Compressor, method and jig for balancing the same |
| CN208734552U (en) * | 2018-08-31 | 2019-04-12 | 大冶市弘丰机械制造有限公司 | A kind of adjustable compressor balance weight of center of gravity |
| CN211343290U (en) * | 2019-12-06 | 2020-08-25 | 黄石东贝电器股份有限公司 | Self-adaptive dynamic balance device for dynamic balance of crankshaft |
| CN111734637A (en) * | 2020-06-01 | 2020-10-02 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor |
| CN111969779A (en) * | 2020-08-17 | 2020-11-20 | 珠海格力电器股份有限公司 | Motor rotating shaft dynamic balance device and control method thereof, and motor |
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|---|---|
| CN114198310B (en) | 2023-10-03 |
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