CN114198310B - 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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- CN114198310B CN114198310B CN202111553078.2A CN202111553078A CN114198310B CN 114198310 B CN114198310 B CN 114198310B CN 202111553078 A CN202111553078 A CN 202111553078A CN 114198310 B CN114198310 B CN 114198310B
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- adjustment
- compressor
- electromagnet
- balance weight
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- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 230000003044 adaptive effect Effects 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 14
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 230000005389 magnetism Effects 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 7
- 230000010354 integration Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 8
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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 adjustment assembly and a compressor comprising the same. The adaptive balancing 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, a brush ring, a coil and a connecting rod, wherein the balance block is of a cylindrical structure, the inner diameter of the first end of the balance block is reduced to form a connecting end, the coil stretches into the balance block from the second end of the balance block, the permanent magnet is arranged on the balance block, induced voltage is generated in the coil, and the balance block is provided with the brush ring which is in sliding electrical connection with the 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 magnitude of the induced voltage. The invention can accurately adjust the mass center of the balance weight according to the rotation speed of the compressor, and the assembly is integrated on the upper bracket and the balance weight and takes the main shaft as a power source, so that 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 the commercial multi-split air conditioners and other central air conditioners due to the characteristics of large cold energy range, low running noise and the like; with the development of technology, scroll compressors are being updated in the direction of higher speeds and lighter weights. In order to achieve high speed and light weight, most scroll compressors for multiple-split air-conditioning use an asymmetric scroll line design, compression cavities are not symmetrical in the operation process of the compressor, radial pressures of air in different compression cavities on a pump body are different and cannot offset each other, so that radial resultant force of the compression cavities on the pump body is also generated in the operation process of the compressor except for unbalance of the structure, the larger the operation frequency of the compressor is, the larger the influence of the force on the whole balance is, and after the operation frequency of the compressor reaches a certain height, the influence of the air force on the compressor needs to be considered.
With the development of technology, the operating frequency of the scroll compressor is wider and wider; the scroll compressor pump body section is typically located above the machine and is typically supplied with oil using a positive displacement oil pump, the oil supply efficiency of which is positively correlated with the compressor operating speed. When the compressor is started to run at low frequency, the running speed is low, the oil quantity of the oil pump is low, the oil can not reach the pump body in time, and abrasion is easy to occur; in order to solve the problem, the compressor needs to be enabled to realize reverse starting, the pump body is static during reverse rotation, the main shaft only drives the oil pump to work, oil can enter the pump body for lubrication in advance, and then the compressor moves forward. However, the existing balance adjusting device of the compressor generally adjusts only for forward rotation, and is difficult to perform effective self-adaptive balance adjustment in the reverse rotation process, or a relatively complex structure or control logic is required to achieve a relatively good adjusting effect.
Disclosure of Invention
In view of this, the invention provides an adaptive balance adjustment assembly and a compressor including the same, which at least solve the technical problem that the forward and reverse rotation in the prior art cannot realize adaptive adjustment, and in particular:
in a first aspect, the present invention provides an adaptive balancing adjustment assembly for adjusting dynamic balance during operation of a compressor, 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 balance component comprises a balance block, the balance block is in a cylindrical structure, the inner diameter of the first end of the balance block is reduced to form a connecting end which is used for being connected with a main shaft of the compressor, the coil stretches into the balance block from the second end of the balance block,
the balance assembly further comprises a permanent magnet, the permanent magnet is arranged on the balance block, the permanent magnet rotates along with the balance block, induced voltage is generated in the coil, a brush ring is arranged on the balance block, and the brush is connected with the brush ring in a sliding and electric mode;
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 magnitude of the induced voltage.
Further alternatively, a connecting hole is formed on the connecting end, a counterweight section and a hollowed-out section are formed on the periphery of the connecting hole, an adjusting groove is formed on the end face of the counterweight section,
the counterweight adjustment mechanism includes a first adjustment mechanism including an adjustment substance that is fluidly disposed within the adjustment tank, and a conduction valve disposed within the adjustment tank that divides the adjustment tank into a high potential region and a low potential region,
the conduction valve comprises a unidirectional conduction channel and an electromagnetic conduction channel,
the unidirectional conduction channel enables the high potential area to be communicated with the low potential area in one direction, the electromagnetic conduction channel controls the conduction from the low potential area to the high potential area by the electromagnetic valve and can control the conduction flow,
the electromagnetic valve is electrically connected with the electric brush ring.
Further alternatively, the regulating groove is arranged along the radial direction of the connecting end and is positioned at the middle position in the circumferential direction of the counterweight section,
the high potential area is positioned at one side far away from the connecting hole, the low potential area is positioned at one side close to the connecting hole,
the regulating substance can flow from the high potential region into the low potential region through the unidirectional conduction channel under the action of gravity, and the regulating substance can also flow from the low potential region into the high potential region through the electromagnetic conduction channel under the action of centrifugal force.
Further alternatively, the brush includes a plurality of contacts,
the brush ring comprises a plurality of conducting rings, wherein each conducting ring comprises a forward conducting ring, a reverse conducting ring and a bidirectional conducting ring, and each contact piece is abutted against one conducting ring.
Further alternatively, the weight 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,
the first adjusting mechanism is electrically connected with the bidirectional conducting ring.
Further alternatively, a chute 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 chute, and a sliding block which is slidably arranged between the first electromagnet and the second electromagnet,
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 weight rotates, one of the first electromagnet and the second electromagnet is electrified to generate magnetism,
the sliding block moves towards the electromagnet generating magnetism under the action of magnetism.
Further optionally, the sliding groove is an arc-shaped groove formed along the circumferential direction of the connecting hole, and the corresponding central angle of the arc-shaped groove is smaller than or equal to 180 degrees.
Further optionally, the balancing assembly includes a first cover plate fixedly disposed at the connection end and closing the adjusting slot and the chute.
Further alternatively, the upper bracket also comprises a magnetic conduction sheet and a bracket cover plate,
the plurality of coils are connected in series and attached to the outer peripheral wall of the axial extension along the circumferential direction of the axial extension,
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 is used for fixing the magnetic conductive sheet.
Further alternatively, the balancing assembly further comprises a second cover plate,
the second end face of the balance block is provided with a permanent magnet mounting groove, 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 to seal the permanent magnet mounting groove.
In a second aspect, the present invention provides a compressor, including the above adaptive balance adjustment assembly, where the upper bracket is fixedly connected to an inner peripheral wall of a casing of the compressor, and a connection 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.
The coil and the permanent magnet are matched to adaptively identify the running state of the compressor, and the mass center of the balance weight is accurately regulated according to the magnitude of the induced voltage, so that the compressor can realize running dynamic balance 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 examples of the present disclosure and other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 shows a schematic cross-sectional view of a compressor according to an embodiment of the present invention;
FIG. 2 shows an enlarged view at A in FIG. 1;
FIG. 3 shows a schematic view of an exploded structure of an upper rack according to an embodiment of the present invention;
FIG. 4 shows a schematic exploded view of a balancing assembly in accordance with an embodiment of the present invention;
FIG. 5 shows a schematic top view of a weight according to an embodiment of the present invention;
FIG. 6 shows a schematic bottom view of a weight according to an embodiment of the present invention;
FIG. 7 shows a schematic diagram of an exploded construction of a conductive valve according to an embodiment of the present invention;
FIG. 8 shows a schematic cross-sectional view (initial state) of a first adjustment mechanism of an embodiment of the present invention;
fig. 9 shows a schematic cross-sectional view (high rotation speed state) of the first regulating mechanism of the embodiment of the present invention.
In the figure:
1. an upper bracket; 11. an axial extension; 12. a coil; 13. magnetic conductive sheets; 14. a bracket cover plate; 141. a wire through hole; 15. a brush;
2. a balance weight; 21. a connection end; 211. a counterweight section; 212. a hollowed-out section; 213. an adjustment tank; 2131. a high potential region; 2132. a low potential region; 2133. a modulating substance; 214. a chute; 215. a connection hole; 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 slide block; 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
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product 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 product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.
The coil and the permanent magnet are matched to adaptively identify the running state of the compressor, and the mass center of the balance weight is accurately regulated according to the magnitude of the induced voltage, so that the compressor can realize running dynamic balance under different running states. The main principle is that in the running process of the compressor, the upper bracket and the balance weight have relative motion relation, the running speed of the main shaft is converted into a current signal by generating electromagnetic induction effect through the arranged coil and the permanent magnet, and the electromagnetic valve arranged on the main balance weight is controlled to adjust the mass center of the main balance weight through the signal. The invention is described in detail below in connection with specific embodiments:
as shown in fig. 1 and 2, the present invention provides an adaptive balance adjustment assembly for adjusting dynamic balance during operation of a compressor, comprising:
the upper bracket 1, the upper bracket 1 includes the axial extension 11, there are coils 12 on the axial extension 11, connect with the brush 15 on the coil 12;
as shown in fig. 4, the balance assembly comprises a balance weight 2, the balance weight 2 is in a cylindrical structure, the inner diameter of the first end of the balance weight 2 is reduced to form a connecting end 21 for connecting with a main shaft 3, a coil 12 extends into the balance weight 2 from the second end of the balance weight 2,
the balance assembly further comprises a permanent magnet 26, the permanent magnet 26 is arranged on the balance weight 2, the permanent magnet 26 rotates along with the balance weight 2, induced voltage is generated in the coil 12, the balance weight 2 is provided with an electric brush 15 ring, and the electric brush 15 is in sliding electric 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 magnitude of the induced voltage.
When the coil 12 performs cutting magnetic induction line motion in a magnetic field, induced voltage is generated in the coil 12, the voltage 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 induced voltage and the rotation speed of the compressor can be established, the mass center of the balance weight 2 is controlled by identifying the induced voltage, and the balance coefficient is changed
Specifically, as shown in fig. 3, the lower part of the upper bracket 1 extends in the axial direction to form an axial extension 11, the upper bracket 1 further includes a magnetic conductive sheet 13 and a bracket cover 14, a plurality of coils 12 are provided, and the plurality of coils 12 are connected in series and are fitted on the outer peripheral wall of the axial extension 11 in the circumferential direction of the axial extension 11. The plurality of magnetic conductive pieces 13 are provided, each magnetic conductive piece 13 is provided corresponding to one coil 12, the plurality of magnetic conductive pieces 13 are attached to the outer peripheral wall of the axial extension 11 and cover the coil 12, and the bracket cover 14 is fixedly provided at the end of the axial extension 11 and fixes the magnetic conductive pieces 13. Preferably, a limit bump is formed on the outer peripheral wall of the axial extension 11, and a limit groove is formed on the magnetic conductive sheet 13, and the limit bump and the limit groove cooperate to limit the magnetic conductive sheet 13 in the circumferential direction of the axial extension 11. The bracket cover 14 has a circular structure, is fixed to the end of the axial extension 11 by a fastener such as a screw, and compresses the magnetic sheet 13 in the axial direction by the bracket cover 14, so that the magnetic sheet 13 is fixed to the axial extension 11. The holder cover 14 is formed with a wire hole 141 through which the brush 15 passes.
The inner diameter of the first end of the balancing weight 2 is reduced to form a connecting end 21, a connecting hole 215 is formed in the connecting end 21, the connecting hole 215 is used for being connected with the main shaft 3 of the compressor, a balancing weight section 211 and a hollowed-out section 212 are formed on the periphery of the connecting hole 215, and preferably, the balancing weight and the hollowed-out section 212 are of a semicircular arc structure.
As shown in fig. 4 and 5, a portion between the connecting end 21 and the second end of the weight 2 is sleeved outside the axial extension 11 of the upper bracket 1, a permanent magnet mounting groove 25 is formed in the end face of the second end of the weight 2, a permanent magnet 26 is embedded in the permanent magnet mounting groove 25, and a second cover plate 27 is fixedly provided at the second end of the weight 2 to close the permanent magnet mounting groove 25 and restrict the permanent magnet 26 in the permanent magnet mounting groove 25.
As shown in fig. 6, an adjustment groove 213 is formed on an end surface of the weight section 211, and the weight adjustment mechanism includes a first adjustment mechanism including an adjustment substance 2133 that is flowably provided in the adjustment groove 213, and a conduction valve 22 that is provided in the adjustment groove 213. The adjusting substance 2133 is a fluid and can flow in the adjusting tank 213 by gravity and centrifugal force, and preferably the adjusting substance 2133 is a lubricating oil having an anti-rust function and not reacting with the applied refrigerant. Preferably, a part of the adjustment groove 213 is formed on the first cover plate 28, the part located on the first cover plate 28 forms a bottom wall of the adjustment groove 213, and the bottom wall thereof 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 comprises a unidirectional conduction channel and an electromagnetic conduction channel, the unidirectional conduction channel enables the high potential area 2131 to be in unidirectional communication with the low potential area 2132, the electromagnetic conduction channel controls conduction of the low potential area 2132 to the high potential area 2131 by an electromagnetic valve, and can control conduction flow, and the electromagnetic valve is electrically connected with the brush 15 ring.
Preferably, the adjusting groove 213 is disposed along the radial direction of the connection end 21 and is located at an intermediate position in the circumferential direction of the weight section 211, the high potential region 2131 is located at a side away from the connection hole 215, the low potential region 2132 is located at a side close to the connection hole 215, the adjusting substance 2133 can flow from the high potential region 2131 into the low potential region 2132 through the unidirectional conductive passage under the action of gravity, and the adjusting substance 2133 can also flow from the low potential region 2132 into the high potential region 2131 through the electromagnetic conductive passage under the action of centrifugal force.
Further, as shown in fig. 7, the on-valve 22 includes a valve body 221, a unidirectional valve core 222 is formed on the valve body 221, a height difference exists between the high potential area 2131 and the low potential area 2132, and a diversion slope exists, the regulating substance 2133 can flow from the high potential area 2131 into the low potential area 2132 through the unidirectional valve core 222 under the action of gravity, and the unidirectional valve core 222 can also avoid the regulating substance 2133 from flowing from the low potential area 2132 into 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 is electrified to absorb the valve plates 223 to move upwards so as to open electromagnetic conduction channels on two sides of the valve body 221, and the valve plates 223 can fall back under the action of gravity when the third electromagnet 224 is powered off to close the electromagnetic conduction channels. When the electromagnetic conduction passage is opened, the regulating substance 2133 may flow back from the low potential region 2132 to the high potential region 2131, and the flow rate is controlled by controlling the opening or opening time of the electromagnetic valve.
The brush 15 includes a plurality of contact pieces, as shown in fig. 5, the brush 15 ring has a ring-shaped structure formed around the connection hole 215 on the inner end surface of the connection end 21, and correspondingly, the brush 15 ring includes a plurality of conductive rings including a forward conductive ring, a reverse conductive ring, and a bidirectional conductive ring, each contact piece abutting on one conductive ring. Specifically, the bidirectional conducting ring is an annular conducting piece, one contact piece of the electric brush 15 is abutted against the bidirectional conducting ring and is in sliding contact with the bidirectional conducting ring, electric connection can be achieved when the balance weight 2 rotates forwards and backwards, the third electromagnet 224 of the first adjusting mechanism is electrically connected with the bidirectional conducting ring, and the mass center can be adjusted through the first adjusting mechanism when the balance weight 2 rotates forwards and reversely. The forward conduction ring and the reverse conduction ring are of unidirectional conductive structures, taking the forward conduction ring as an example, a plurality of bulges or pits are formed on the forward conduction ring along the circumferential direction of the forward conduction ring, a conductive layer is arranged on the first surface of each bulge or pit, when the forward rotation is carried out, the contact piece is in sliding contact with the first surface to form electric connection, and when the reverse rotation is carried out, the contact piece is in sliding contact with the second surface to be incapable of conducting electricity. Similarly, the reverse conducting ring has a structure similar to that of the forward conducting ring, and the positions of the conducting layers are opposite, so that electric connection in reverse rotation is realized, and electric conduction in forward rotation cannot be realized.
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 chute 214, and the second adjusting mechanism includes a first electromagnet 231 and a second electromagnet 232 disposed at both ends of the chute 214, and a slider 233 slidably disposed between the first electromagnet 231 and the second electromagnet 232.
The first electromagnet 231 is electrically connected with the reverse conducting ring, the second electromagnet 232 is electrically connected with the forward conducting ring, when the balance weight 2 rotates, one of the first electromagnet 231 and the second electromagnet 232 is electrified to generate magnetism, and the sliding block 233 moves towards the electromagnet generating magnetism under the action of the magnetism so as to adjust the mass center of the balance weight 2.
Preferably, the sliding groove 214 is an arc groove formed along the circumferential direction of the connecting hole 215, and the corresponding central angle of the arc groove is smaller than or equal to 180 ° so as to shorten the distance between the sliding block 233 and the two electromagnets, so that the sliding block can be effectively adjusted.
Further, the balance assembly further includes a first cover plate 28, and an adjusting groove 213 and a sliding groove 214 are formed on the outer end surface of the connection end 21, and the first cover plate 28 is fixedly disposed on the outer wall surface of the connection 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 weight 2 is fixedly arranged on the main shaft 3 of the compressor, and the balance weight 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 the balance weight 2 is in interference fit with the main shaft 3, and is provided with a specific angle requirement, and the balance weight 2 synchronously rotates along with the main shaft 3, preferably, the specific angle is an included angle between the semicircular centroid of the balance weight part and the perpendicular line from the center axis to the center axis of the movable vortex plate, further, the included angle is generally 180 degrees, and the dynamic balance of the whole shafting is ensured according to the dynamic balance design of normal operation of the movable vortex plate. The first adjusting mechanism is intermittently opened from the low potential area 2132 to the high potential area 2131, and after the electromotive force reaches a preset threshold value, the valve 22 is opened for a short period of time to enable the adjusting substance 2133 to flow into the high potential area 2131, preferably, the adjusting mechanism is adjusted in multiple stages according to the rotating speed, only a part of the substance is allowed to pass through each time when the rotating speed reaches a specific value, and the same time is opened when the rotating speed reaches a specific value; the regulating groove 213 has a certain inclination along the length direction, in a normal state (i.e. initial state), the regulating substance 2133 is gathered in a low potential area 2132 near the axis of the main shaft 3 by the gravity action through the normally open conducting valve 22, when the main balance weight 2 runs along with the main shaft 3, the centroid regulating substance has a tendency to move from the low potential area 2132 to the high potential area 2131 due to the centrifugal force action, after the rotating speed reaches a set threshold value, the conducting valve 22 is opened for a short period of time, and a part of centroid regulating substance is placed in the high potential area 2131, so that the centroid position is changed, the balance is regulated, a plurality of thresholds can be set, and the wide-frequency-band hierarchical regulation is realized.
When the compressor has a reversing requirement, the balance coefficient needs to be changed along with the reversing requirement; the main balance weight 2 is provided with a forward and a reverse conducting brushes, the structure of the forward and reverse conducting brushes is similar to a sine function, the forward and reverse conducting brushes are different in that a conductive material is attached to one side, and the other side is an insulating material. The corresponding conducting brushes are connected with the corresponding electromagnets, so that the conducting brushes have the functions of magnetically attracting the balancing weights to adjust the mass center positions so as to realize mass center adjustment.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that this disclosure is not limited to the particular arrangements, instrumentalities and methods of implementation 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 balancing adjustment assembly for adjusting dynamic balance during operation of a compressor, 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 balance component comprises a balance block, the balance block is in a cylindrical structure, the inner diameter of the first end of the balance block is reduced to form a connecting end which is used for being connected with a main shaft of the compressor, the coil stretches into the balance block from the second end of the balance block,
the balance assembly further comprises a permanent magnet, the permanent magnet is arranged on the balance block, the permanent magnet rotates along with the balance block, induced voltage is generated in the coil, a brush ring is arranged on the balance block, and the brush is connected with the brush ring in a sliding and electric mode;
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 magnitude of the induced voltage.
2. The self-adaptive balance adjustment assembly according to claim 1, wherein a connecting hole is formed on the connecting end, a counterweight section and a hollowed-out section are formed on the periphery of the connecting hole, an adjustment groove is formed on the end face of the counterweight section,
the counterweight adjustment mechanism includes a first adjustment mechanism including an adjustment substance that is fluidly disposed within the adjustment tank, and a conduction valve disposed within the adjustment tank that divides the adjustment tank into a high potential region and a low potential region,
the conduction valve comprises a unidirectional conduction channel and an electromagnetic conduction channel,
the unidirectional conduction channel enables the high potential area to be communicated with the low potential area in one direction, the electromagnetic conduction channel controls the conduction from the low potential area to the high potential area by the electromagnetic valve and can control the conduction flow,
the electromagnetic valve is electrically connected with the electric brush ring.
3. The adaptive balance adjustment assembly of claim 2, wherein the adjustment slot is disposed radially of the connecting end and is located circumferentially intermediate the weight segments,
the high potential area is positioned at one side far away from the connecting hole, the low potential area is positioned at one side close to the connecting hole,
the regulating substance can flow from the high potential region into the low potential region through the unidirectional conduction channel under the action of gravity, and the regulating substance can also flow from the low potential region into the high potential region 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 contacts,
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 the plurality of contact pieces are in sliding contact with the forward conducting rings, the reverse conducting rings and the bidirectional conducting rings in a one-to-one correspondence.
5. The adaptive balance adjustment assembly of claim 4 wherein the weight adjustment mechanism further comprises a second adjustment mechanism, wherein the second adjustment mechanism is electrically connected to the forward conduction ring and the reverse conduction 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 defines a chute,
the second adjusting mechanism comprises a first electromagnet and a second electromagnet which are arranged at two ends of the chute, and a sliding block which is slidably arranged between the first electromagnet and the second electromagnet,
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 weight rotates, one of the first electromagnet and the second electromagnet is electrified to generate magnetism,
the sliding block moves towards the electromagnet generating magnetism under the action of magnetism.
7. The adaptive balance adjustment assembly of claim 6, wherein the chute is an arcuate slot formed along a circumference of the connecting hole, the arcuate slot corresponding to a central angle of less than or equal to 180 °.
8. The adaptive balance adjustment assembly of claim 6, wherein the balance assembly comprises a first cover plate fixedly disposed at the connection end and closing the adjustment slot and the chute.
9. The adaptive balance adjustment assembly according to any one of claims 1-8, wherein the upper bracket further comprises a magnetic conductive sheet and a bracket cover,
the plurality of coils are connected in series and attached to the outer peripheral wall of the axial extension along the circumferential direction of the axial extension,
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 is used for fixing the magnetic conductive sheet.
10. The adaptive balance adjustment assembly according to any one of claims 1-8, wherein the balance assembly further comprises a second cover plate,
the second end face of the balance block is provided with a permanent magnet mounting groove, 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 to seal the permanent magnet mounting groove.
11. A compressor, characterized by comprising the self-adaptive balance adjustment assembly according to any one of claims 1-10, wherein the upper bracket is fixedly connected with the inner peripheral wall of the shell of the compressor, the connecting end of the balance weight is fixedly arranged on a main shaft of the compressor, and the balance weight and the main shaft synchronously rotate.
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 |
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| CN202111553078.2A CN114198310B (en) | 2021-12-17 | 2021-12-17 | Self-adaptive balance adjusting assembly and compressor comprising same |
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| CN114198310A CN114198310A (en) | 2022-03-18 |
| CN114198310B true CN114198310B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001119906A (en) * | 1999-10-20 | 2001-04-27 | Kokusan Denki Co Ltd | Motor |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003021060A (en) * | 2001-07-10 | 2003-01-24 | Toyota Industries Corp | Compressor, and method and tool for balancing compressor |
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2021
- 2021-12-17 CN CN202111553078.2A patent/CN114198310B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001119906A (en) * | 1999-10-20 | 2001-04-27 | Kokusan Denki Co Ltd | Motor |
| 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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| CN114198310A (en) | 2022-03-18 |
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