CN102734162A - Motor-driven compressor - Google Patents

Motor-driven compressor Download PDF

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Publication number
CN102734162A
CN102734162A CN2012100847945A CN201210084794A CN102734162A CN 102734162 A CN102734162 A CN 102734162A CN 2012100847945 A CN2012100847945 A CN 2012100847945A CN 201210084794 A CN201210084794 A CN 201210084794A CN 102734162 A CN102734162 A CN 102734162A
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CN
China
Prior art keywords
vibration
electric motor
waveform
motor
compressing mechanism
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Pending
Application number
CN2012100847945A
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Chinese (zh)
Inventor
横井健二
水藤健
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Toyota Industries Corp
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Toyoda Automatic Loom Works Ltd
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Publication date
Application filed by Toyoda Automatic Loom Works Ltd filed Critical Toyoda Automatic Loom Works Ltd
Publication of CN102734162A publication Critical patent/CN102734162A/en
Pending legal-status Critical Current

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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
    • F04C29/06—Silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/12—Vibration
    • 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
    • F04C23/008—Hermetic pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A motor-driven compressor includes an electric motor (23), a compression mechanism (32), which compresses gas by being driven by the electric motor (23), and a body (KT) accommodating the electric motor (23) and the compression mechanism (32). The motor-driven compressor includes a motor control section (51), which drives the electric motor (23) by controlling power supply to the electric motor (23), a vibration control section (52), which generates a waveform in a phase opposite to the waveform of vibration predicted to be generated in the body (KT) due to the driving of the electric motor (23), and a vibration applying device (45a-45c), which is located on the body (KT) and applies vibration in the opposite phase generated by the vibration control section (52) to the body (KT).

Description

Motor compressor
Technical field
The present invention relates to a kind of motor compressor that drives noise that reduces.
Background technique
In the motor vehicle driven by mixed power or electric vehicle of installation electric motor as the driving source of propelled vehicles of existing technology, when the vehicle temporary parking, reduce the noise that produces owing to electrical motor driven through making electric motor be in off working state.In the vehicle such as hybrid vehicle, motor compressor is mounted to the drive condition that makes regardless of the electric motor that is used to advance, and air-conditioning all can use.
Yet if motor compressor is installed on the vehicle such as hybrid vehicle, because when the electric motor that is used for propelled vehicles was not worked, motor compressor was driven, noise can become a problem.Proposed to offset the muffling device of the driving noise of compressor about this problem, seen that japanese laid-open patent is open: No.4-334713.
According to this disclosed muffling device, the opposite sound of the phase place of the driving noise that from loudspeaker output and compressor, produces is to offset the driving noise of compressor.Thus, muffling device can be suppressed to outside driven compressor noise.
In this muffling device, need near the body of compressor, loudspeaker be set discretely with compressor.On the other hand, in comprising the automobile in recent years of hybrid vehicle, a large amount of parts are installed on the ground that need conform to the complexity of vehicle control.The problem in the space of new parts has appearred fully guaranteeing being used to placing as a result.Therefore, muffling device is difficult to be installed on the vehicle dividually with compressor.
Summary of the invention
Correspondingly, an object of the present invention is to provide a kind of can be provided with and can suppress the motor compressor of noise with the mode of saving the space.
In order to realize aforesaid purpose and, a kind of motor compressor be provided that said motor compressor comprises electric motor, compressing mechanism, body, motor control device, waveform generation portion and at least one vibration application devices according to one aspect of the present invention.Said compressing mechanism by said electrical motor driven with pressurized gas.Said body holds said electric motor and said compressing mechanism.Said motor control device is supplied with the electric power of said electric motor through control and is driven said electric motor.The opposite waveform of waveform phase of the vibration that said waveform generation portion's generation and the driving of being predicted because of said electric motor will produce in said body.Said vibration application devices is arranged on the said body, and applies the vibration with the said waveform that is opposite phase that is produced by said waveform generation portion to said body.
Others of the present invention and advantage will be from below in conjunction with becoming clear the description of carrying out as the accompanying drawing shown in the example of the principle of the invention.
Description of drawings
With reference to following description and accompanying drawing to current preferred implementation, can understand the present invention and purpose and advantage best, in the accompanying drawings:
Figure 1A is the schematic side elevation of motor compressor;
Figure 1B is the schematic, elevational view of motor compressor;
Fig. 2 is the sectional view along the line 2-2 institute intercepting among Figure 1B;
Fig. 3 is the schematic side elevation according to the motor compressor of another mode of execution;
Embodiment
With reference to Figure 1A, Figure 1B and Fig. 2 the electric scroll compressor 10 according to an embodiment of the invention is described below.In the following description, fore-and-aft direction is defined as the direction of the arrow Y1 among Figure 1A.Above-below direction is defined as the direction of the arrow Y2 among Figure 1A.Likewise, left and right directions is defined as the direction of the arrow Y3 among Figure 1B.
Shown in Figure 1A and Figure 1B, be used for the assembly department 13 that motor compressor 10 is fixed to base portion 12 is formed on the housing 11 of motor compressor 10.In this embodiment, the body KT of housing 11 and assembly department 13 formation motor compressors 10.Base portion 12 is internal faces of driving source chamber, and this driving source chamber housing is as the motor of the driving source that is used for vehicle driving in for example hybrid vehicle or the electric vehicle.Assembly department 13 is fixed by the fastening piece such as bolt, and contacts with base portion 12 as the distal face 13a of contacting part.
As shown in Figure 2, housing 11 comprises the cylindrical shape first housing structure 11a and the cylindrical shape second housing structure 11b that extends and have an end of sealing along fore-and-aft direction that extends and have an end of sealing along fore-and-aft direction.The first and second housing structure 11a, 11b are interfixed by the fastened tools such as bolt.The first housing structure 11a and the second housing structure 11b form through pack alloy.
In the first housing structure 11a, be formed with to be used to suck and treat the gas that compresses through motor compressor 10---promptly, refrigerant gas---suction bole 14.In addition, be arranged among the first housing structure 11a as the rotating shaft 15 of output shaft and extend along fore-and-aft direction.It is 15 axis L rotation around the shaft that rotating shaft 15 is supported for by bearing 16 and bearing 17, and bearing 16 and bearing 17 are arranged at the two ends of rotating shaft 15 respectively.Permanent magnet embedded rotor 20 is fixed in the rotating shaft 15 and integrally rotates with rotating shaft 15.
In addition, tooth 21a is formed on the inner peripheral surface of the first housing structure 11a around rotor 20.Stator coil 21b reels around each tooth 21a.Tooth 21a and stator coil 21b form stator 21.In this embodiment, electric motor 23 is made up of rotating shaft 15, rotor 20 and stator 21.Electric motor 23 in this mode of execution is to have three kinds of coils---promptly, U phase coil, V phase coil and W phase coil---as the three-phase ac synchronous motor of stator coil 21b.
Electric motor 23 is contained in the motor holding chamber 24 of the first housing structure 11a.The bearing 17 of supporting revolving shaft 15 front sides is arranged on the partition 25, the motor holding chamber 24 that partition 25 limits among the first housing structure 11a.The front end of rotating shaft 15 inserts and passes the patchhole 25a that is formed in the partition 25.
On the front-end face of rotating shaft 15, be formed with eccentric shaft 15a in the off-centered position of axis L with respect to rotating shaft 15.The moving vortex body member 30 that eccentric shaft 15a supports as movable member through bearing 27.Moving vortex body member 30 comprises dish type substrate 30a and the moving vortex body part 30b that extends forward from substrate 30a.Moving vortex body member 30 when rotating shaft 15 rotations around the shaft 15 axis L spiral, promptly carry out circumnutation, be restricted around rotatablely moving of eccentric shaft 15a simultaneously.
Decide the opening end that vortex body member 31 is fixed on the first housing structure 11a.Decide that vortex body member 31 comprises dish type substrate 31a, the cylindrical shape periphery wall 31b that extends from the peripheral portion of substrate 31a and decide vortex body part 31c from what substrate 31a extended back in the inboard of periphery wall 31b.The distal face of periphery wall 31b is engaged to the anterior face of partition 25.Substrate 31a, periphery wall 31b and the partition 25 of deciding vortex body member 31 limit vortex body receiving cavity 33.The intercommunicating pore 25b that motor holding chamber 24 is communicated with vortex body receiving cavity 33 is formed in the partition 25.
Moving vortex body member 30 and decide vortex and 31 be arranged so that moving vortex body part 30b and decide vortex body part 31c and in vortex body receiving cavity 33, cooperatively interact between all, and feasiblely move vortex body part 30b and decide vortex body part 31c distal face separately and on opposite side, contact with substrate 30a, the 31a of vortex body member 30,31.Thus, the substrate 30a and the moving vortex body part 30b of moving vortex body member 30 and decide the substrate 31a of vortex body member 31 and decide vortex body part 31c in vortex body receiving cavity 33, to limit compression chamber 34.In this embodiment, move vortex body member 30 and decide vortex body member 31 formation compressing mechanisms 32.
Be used for the suction chamber 35 that gas is introduced compression chamber 34 is limited between the outermost perimembranous of moving vortex body part 30b of the periphery wall 31b that decides vortex body member 31 and moving vortex body member 30.Suction chamber 35 is connected to intercommunicating pore 25b through suction channel 36.
Limit discharge side 37 through engaging the second housing structure 11b and deciding vortex body member 31 in the place ahead of deciding vortex body member 31.Centre at substrate 31a in deciding vortex body member 31 is formed with the tap hole 31d that compression chamber 34 is connected to discharge side 37.
The expulsion valve 40 that constitutes by the pilot valve of opening/closing tap hole 31d be arranged on decide vortex body member 31 with discharge side 37 facing surfaces on.Expulsion valve 40 prevents to be back to compressing mechanism 32 from the pressurized gas that compressing mechanism 32 is discharged.In addition, the baffle plate 41 of regulating the aperture of expulsion valve 40 is fixed on the side relative with discharge side 37 of deciding vortex body member 31.Expulsion valve 40 is between sealing station and open position, operating on the fore-and-aft direction, at sealing station, through contacting and seal tap hole 31d with deciding vortex body member 31, at open position, when baffle plate 41 promotes, opens tap hole 31d when being compressed gas.
In addition, in the second housing structure 11b, be formed with the pressurized gas of discharging in the discharge side 37---promptly, higher pressure refrigerant gas---tap hole 42.
When being supplied to the motivational drive rotating shaft 15 of electric motor 23, moving vortex body member 30 passes through eccentric shaft 15a around the axis of deciding vortex body member 31---promptly, the axis L of rotating shaft 15---spiral.Compression chamber 34 is from the vortex body part 30b of two vortex body members 30,31, the outer circumferential central authorities motion of 31c, and the motion of spiraling through moving vortex body member 30 simultaneously reduces volume.Thereby the gas that is drawn into compression chamber 34 from suction chamber 35 is compressed.Afterwards, the gas by compressing mechanism 32 compressions is expelled to discharge side 37 through expulsion valve 40 from tap hole 31d.
In addition, along with the operation of compressing mechanism 32, through the suction bole 14 suction gases of the first housing structure 11a.The gas that sucks passes intercommunicating pore 25b and suction channel 36, and is introduced in suction chamber 35.In addition, be expelled to pressurized gas in the discharge side 37 is discharged into motor compressor 10 from tap hole 42 outside.
In addition, because the driving of electric motor 23, each the parts place in the motor compressor 10 vibrates, and body KT is correspondingly vibration also.For example, frequency equal electric motor 23 the vibration of rotating speed because the driving of electric motor 23 and be passed to body KT from electric motor 23.
Mainly on perpendicular to the above-below direction of axis L and on left and right directions, that frequency equals electric motor 23 vibration of rotating speed is through moving vortex body member 30 15 the spiraling motion of axis L and be passed to body KT from compressing mechanism 32 around the shaft.Because the vortex body part 30b of vortex body member 30,31, the fricative vibration between the 31c are passed to body KT from compressing mechanism 32.Frictional noise is produced by this vibration.Place, the top of the compressing mechanism 32 on the outer surface of body KT is that the distal face 13a with assembly department 13 separates position farthest, also is the position that vibration becomes maximum.
Along with pressurized gas is discharged from expulsion valve 40, the vibration that frequency equals the rotating speed of electric motor 23 is passed to body KT and main direction forwards, backwards from expulsion valve 40.
Then; Shown in Figure 1A and Figure 1B, piezoelectric device 45a, assembly department piezoelectric device 45b and last piezoelectric device 45c are as the vibration application devices that applies vibration to housing 11 before being provided with for the outer surface of the body KT of motor compressor 10---such as housing 11 and assembly department 13---.Each piezoelectric device 45a to 45c is the laminated piezoelectric actuator of range upon range of a plurality of piezoelectric devices, and through applying vibration according to the voltage expansion that is applied to housing 11.
In more detail, preceding piezoelectric device 45a is arranged on the outer surface of housing 11 and at the position that forms discharge side 37.In addition, preceding piezoelectric device 45a is set on fore-and-aft direction, align with tap hole 31d and expulsion valve 40, that is, when when the front is seen, preceding piezoelectric device 45a is set in the face of tap hole 31d and expulsion valve 40.Preceding piezoelectric device 45a applies the vibration on the fore-and-aft direction through voltage application to body KT.
In addition, assembly department piezoelectric device 45b is arranged on the outer surface of the assembly department 13 on the left side of motor compressor 10.Assembly department piezoelectric device 45b applies the vibration on the left and right directions through voltage application to body KT.
Last piezoelectric device 45c be arranged on the outer surface of housing 11 in the position of compressing mechanism 32 and on housing 11 outsides perpendicular to the upper side position place on the above-below direction of the rotating shaft 15 of electric motor 23.Last piezoelectric device 45c is arranged on the distal face 13a position farthest apart from assembly department 13 on the outer surface of body KT.Last piezoelectric device 45c provides the vibration on the above-below direction through voltage application to body KT.
Next, the motor driven structure of motor compressor 10 is described according to Figure 1A and Figure 1B.
Shown in Figure 1A and Figure 1B, motor compressor 10 has controller 50, the operation of the motor compressor 10 that controller 50 controls are mounted thereon.Controller 50 comprises through control supplies with the motor control device 51 that drives electric motor 23 to the electric power of electric motor 23 and through applying the vibration control portion 52 that voltage is controlled the expansion operation for each piezoelectric device 45a to 45c.
Electric motor 23 is connected to motor control device 51 with vibration control portion 52.Motor control device 51 comprises the inverter circuit that is made up of the switching member such as IGBT (igbt).Motor control device 51 will be threephase AC from the power conversions that DC electrical source provides, and according to from the speed command of outside through by means of vector control each switching member of on/off and electric power is provided to electric motor 23.More specifically, motor control device 51 is estimated the rotating speed and the rotor-position of the rotor 20 of electric motor 23 through based on the calculating from the voltage of the output current of inverter current or inverter circuit.Then, motor control device 51 produces the drive waveform signal such as PWM (PWM) signal based on estimated rotor-position and rotating speed, and each switching member of the drive waveform signal on/off inverter circuit that passes through to be produced.
Vibration control portion 52 comprises the ROM of the CPU, storage computer program and the various characteristics figure that carry out various computational processes and the RAM of interim storage such as information such as CPU result of calculation.Vibration control portion 52 is based on the waveform that calculates and predict the vibration that estimation just produces in body KT owing to the driving of electric motor 23 through the state of a control of 52 pairs of electric motors 23 of motor control device.Describe the operation of vibration control portion 52 below in detail.
The rotating speed of the ROM of vibration control portion 52 storage electric motor 23---promptly, the revolution of time per unit---and with body KT in the related waveform prognostic chart of waveform of the vibration that produces.This waveform prognostic chart is directed against the position of each piezoelectric device 45a to 45c and prepares.Each waveform prognostic chart is set based on the actual measured value according to the vibrational waveform of the position of each the piezoelectric device 45a to 45c on the outer surface of body KT of the rotating speed of electric motor 23.
The waveform prognostic chart of piezoelectric device 45a before use is used for can be confirmed the vibrational waveform on the fore-and-aft direction of the position of preceding piezoelectric device 45a based on the rotating speed of electric motor 23.Use is used for the waveform prognostic chart of assembly department piezoelectric device 45b, can confirm the vibrational waveform on the left and right directions of the position of assembly department piezoelectric device 45b based on the rotating speed of electric motor 23.Use is used for the waveform prognostic chart of piezoelectric device 45c, can confirm the vibrational waveform on the above-below direction on the last piezoelectric device 45c based on the rotating speed of electric motor 23.
Vibration control portion 52 is based on the rotating speed reference waveform prognostic chart from 51 inputs of motor control device, and prediction is at the vibrational waveform of the body KT of the position of each piezoelectric device 45a to 45c.In addition, vibration control portion 52 is based on the vibration phase of the rotor-position prediction of importing from motor control device 51 at the body KT of the position of each piezoelectric device 45a to 45c.As stated, are the vibrations that rotating speed produced that combine electric motor 23 by the vibration that operation produced of electric motor 23, compressing mechanism 32 and expulsion valve 40, and can be from the phase place of the angle position prediction vibration of the rotor 20 of electric motor 23.
Based on the vibration phase and the waveform of the position prediction that is directed against each piezoelectric device 45a to 45c, vibration control portion 52 produces the waveform of opposite phases.Then, based on the waveform of the opposite phase that is produced, vibration control portion 52 is applied to body KT through applying voltage to each piezoelectric device 45a to 45c with the vibration of opposite phase.In addition, 52 each the piezoelectric device 45a to 45c of control of vibration control portion are so that produce the amplitude vibration identical with the vibration of being predicted.Thus, the vibration control portion 52 in this mode of execution is as waveform generation portion.
The operation of the motor compressor 10 with above structure is described subsequently.
Before piezoelectric device 45a with phase place with opposite towards the oscillating component of fore-and-aft direction and be applied to body KT with the vibration of being predicted that will in the residing position of preceding piezoelectric device 45a, produce has a same-amplitude on fore-and-aft direction vibration.Thus, offset the vibration on fore-and-aft direction in the vibration that is produced among the body KT through preceding piezoelectric device 45a.
Assembly department piezoelectric device 45b with phase place with opposite towards the oscillating component of left and right directions and be applied to body KT with the vibration of being predicted that will in the position of assembly department piezoelectric device 45b, produce has a same-amplitude on left and right directions vibration; That is, be applied to assembly department 13.Thus, offset the vibration on left and right directions in the vibration that is produced among the body KT through assembly department piezoelectric device 45b.
Similarly, last piezoelectric device 45c with phase place with opposite towards the oscillating component of above-below direction and be applied to body KT with the vibration of being predicted that will in the position of last piezoelectric device 45c, produce has a same-amplitude on above-below direction vibration.Thus, offset the vibration on above-below direction in the vibration that is produced among the body KT through last piezoelectric device 45c.
Therefore, this mode of execution can be realized following advantage:
(1) through each piezoelectric device 45a to 45c, with waveform with predicted because the driving of the electric motor 23 and opposite vibration of waveform phase of the vibration that will in body KT, produce is applied to body KT.As a result, offset the vibration that in body KT, produces by the driving of electric motor 23.Thus, can suppress the noise that produces among the body KT.In addition, because each piezoelectric device 45a to 45c is arranged on the body KT, therefore need the equipment that suppress noise be set dividually with motor compressor 10.Therefore, can motor compressor 10 be set with the mode of saving the space, and can suppress the noise of motor compressor 10.
(2) assembly department piezoelectric device 45b is arranged on one of them assembly department 13.Therefore, can advantageously suppress the vibration of generation in the assembly department 13.Thus, can further suppress the noise diffusion that causes owing to the vibration propagation to base portion 12 from assembly department 13.
(3) preceding piezoelectric device 45a is arranged on the outer surface of body KT and in the position of discharge side 37.Therefore, compare with the configuration of preceding piezoelectric device 45a in discharge side 37, the volume of discharge side 37 does not reduce.In addition, can more advantageously be suppressed at the vibration that is produced when pressurized gas is discharged into discharge side 37.Thus, can further suppress generating noise.
(4) preceding piezoelectric device 45a is arranged on the outer surface of body KT and is arranged on the direction of operating of expulsion valve 40---promptly, on fore-and-aft direction---in the face of expulsion valve 40.Therefore, can more advantageously suppress because the vibration that operation produced of expulsion valve 40.Thus, can further suppress generating noise.
(5) go up on the outer surface that piezoelectric device 45c is arranged at body KT and in the position of compressing mechanism 32, and go up piezoelectric device 45c be arranged at motor compressor 23 perpendicular to the outside on the direction of the axis L of rotating shaft 15.Thereby, the vibration that is produced when the moving vortex body member 30 that can more advantageously suppress to constitute compressing mechanism 32 spirals---that is, 15 axis L spirals around the shaft---.Thus, can further suppress generating noise.
(6) in addition, last piezoelectric device 45c is arranged at the distal face 13a position farthest apart from assembly department 13.Thus, can more advantageously suppress the vibration of body KT, this vibration is along with the distance from the distal face 13a of the assembly department that is fixed to base portion 12 13 increases and increases.Thus, can further suppress generating noise.
(7) apply and the opposite vibration of being predicted of vibration phase to body KT through each piezoelectric device 45a to 45c in separately position.Thus, than applying vibration to body KT, can more effectively offset this vibration with common waveform through piezoelectric device 45a to 45c.
(8) by each piezoelectric device 45a to 45c be applied on the fore-and-aft direction, on the left and right directions and the vibration on the above-below direction.Thus, can offset the vibration on all directions that produces among the body KT.Thus, can further suppress generating noise.
(9) vibration control portion 52 waveform of predicting the vibration that produces among the body KT based on the rotating speed and the rotor-position of electric motor 23, and produce the opposite waveform of phase place.Thus; Even the running state of electric motor 23 changes continuously; The rotating speed or the rotor-position that are electric motor 23 change continuously, still can dope the waveform of the vibration that produces among the body KT continuously, and can the vibration opposite with the vibration phase of being predicted be applied to body KT.Thus, can advantageously suppress generating noise.
Should be appreciated that can be under the situation that does not break away from the spirit and scope of the present invention, with following form embodiment of the present invention.
Vibration control portion 52 can be configured to can be based on carrying out feedback control by the vibrational waveform of the detected body KT of vibration transducer on the body KT that is arranged on motor compressor 10.As shown in Figure 3, for example, the vibration transducer 60a to 60c that each free piezoelectric device forms is placed on the position of piezoelectric device 45a to 45c respectively, and is connected to vibration control portion 52.Then, vibration control portion 52 is based on the vibrational waveform by the detected body KT of vibration transducer 60a to 60c, and the feasible amplitude by the detected vibration of each vibration transducer 60a to 60c of the waveform that modified phase is opposite diminishes.In this case, vibration control portion 52 is as waveform modification portion.According to this configuration, will be by the phase place that vibration control portion 52 produces opposite waveform modification become to make and diminish that promptly the amplitude of vibration diminishes by the detected vibration of each vibration transducer 60a to 60c.Thus, predict the vibration of the waveform that the waveform phase vibrated is opposite, can further suppress the vibration that produces among the body KT through revising the opposite waveform of this phase place except applying with institute.If use the sensor that can detect the vibration on fore-and-aft direction, left and right directions and above-below direction as vibration transducer, can use a sensor to substitute vibration transducer 60a to 60c so.
Other actuator that comprises piston and electric motor can act on the vibration application devices.
Can omit one or two piezoelectric device among the piezoelectric device 45a to 45c.Perhaps, can use four or more a plurality of piezoelectric device.That is, but the vibration application devices the quantity appropriate change.
Piezoelectric device 45a to 45c can be arranged in the body KT.For example, piezoelectric device 45a to 45c can be arranged on the partition 25 or be arranged on the internal surface of the second housing structure 11b that forms discharge side 37.In addition, the piezoelectric device distal face 13a that can be arranged at assembly department 13 goes up and the vibration application devices can be arranged between this distal face 13a and the base portion 12.Through above configuration, can be applied to the vibration on the above-below direction to body KT, and can suppress the vibration propagation to base portion 12 from body KT.As stated, but appropriate change vibration applies the position of portion.
In motor compressor 10, can use the rotating speed of speed probe detection electric motor 23, and motor control device 51 can be based on controlling the power supply to electric motor 23 by the detected rotating speed of speed probe.In this case, the waveform of the vibration that in body KT, produces calculated and predicted in vibration control portion 52 can based on by the detected rotating speed of speed probe.
Vibration control portion 52 can be based on holding the moment of torsion that takes place such as in the temperature in the zone of the controller 50 of inverter circuit or the electric motor 23, the waveform of the vibration that prediction produces in body KT, and produce the opposite waveform of phase place.In this case, can use waveform prognostic chart that this temperature is associated in vibrational waveform or the waveform prognostic chart that this moment of torsion is associated in vibrational waveform.
Vibration control portion 52 can be through calculating rather than using the waveform prognostic chart to come the waveform of the vibration of prediction generating in body KT.
Motor control device 51 can be arranged in the separate controller with vibration control portion 52.Controller 50 also can be used as other controller and uses.
The present invention can implement in having the motor compressor of different institutions, such as use electric motor 23 as diapragm compressor, rotary compressor or the oblique tray type compressor etc. of driving source in enforcement.
Thus, embodiment of this specification and mode of execution should be regarded as illustrative rather than restrictive, and the invention is not restricted to details listed among this paper, but can retrofit within the scope of the appended claims or in the equivalents.

Claims (10)

1. motor compressor comprises:
Electric motor (23);
Compressing mechanism (32), said compressing mechanism (32) is driven with pressurized gas by said electric motor (23);
Body (KT), said body (KT) hold said electric motor (23) and said compressing mechanism (32); And
Motor control device (51), said motor control device (51) are supplied with the electric power of said electric motor (23) through control and are driven said electric motor (23),
Said motor compressor is characterised in that:
Waveform generation portion (52), said waveform generation portion (52) produces the opposite waveform of waveform phase of the vibration that will in said body (KT), produce with the driving of being predicted because of said electric motor (23); And
At least one vibrates application devices (45a-45c); Said at least one vibration application devices (45a-45c) is arranged on the said body (KT), and applies the vibration with the said waveform that is opposite phase that is produced by said waveform generation portion (52) to said body (KT).
2. motor compressor according to claim 1 is characterized in that:
Vibration detecting part (60a-60c), said vibration detecting part (60a-60c) detects the vibration that in said body (KT), is produced by the driving of said electric motor (23); And
Waveform modification portion (52); The said waveform that is opposite phase that is produced by said waveform generation portion (52) is revised based on the testing result of said vibration detecting part (60a-60c) by said waveform modification portion (52), makes to reduce through the detected vibration of said vibration detecting part (60a-60c).
3. motor compressor according to claim 1 is characterized in that:
Said body (KT) comprises assembly department (13), and said assembly department (13) is fixed to base portion (12) with said body (KT), and
Said at least one vibration application devices (45a-45c) is arranged on the said assembly department (13).
4. according to each described motor compressor in the claim 1 to 3, it is characterized in that:
Said body (KT) has outer surface and discharge side (37), and the said compressing mechanism (32) of pressurized gas from said body (KT) is discharged in the said discharge side (37), and
Said at least one vibration application devices (45a-45c) is arranged on the said outer surface of said body (KT) and at the position that forms said discharge side (37).
5. motor compressor according to claim 4 is characterized in that:
Expulsion valve (40), said expulsion valve (40) is arranged in the said discharge side (37), and prevents to be back to said compressing mechanism (32) from the pressurized gas that said compressing mechanism (32) is discharged,
Wherein, said at least one vibration application devices (45a-45c) is set in the face of said expulsion valve (40).
6. according to each described motor compressor in the claim 1 to 3, it is characterized in that:
Said electric motor (23) comprises output shaft (15),
Said body (KT) has outer surface,
Said compressing mechanism (32) comprises movable link (30), and said movable link (30) is fixed to the said output shaft (15) of said electric motor (23) and spirals around the axis of said output shaft (15) in company with the driving of said electric motor (23),
Said at least one vibration application devices (45a-45c) is directed on the direction vertical with the said output shaft (15) of said electric motor (23), and is arranged on the said outer surface of said body (KT) and at the position that said compressing mechanism (32) are set.
7. motor compressor according to claim 6 is characterized in that:
Said electric motor (23) comprises the rotor (20) that is fixed to said output shaft (15), and the phase place of the vibration that from the said body of angle position prediction (KT) of said rotor (20), produces of said waveform generation portion (52).
8. according to each described motor compressor in the claim 1 to 3, it is characterized in that:
Said body (KT) comprises assembly department (13), and said assembly department (13) is fixed to base portion (12) with said body (KT), and said body (KT) has outer surface, and
Said at least one vibration application devices (45a-45c) be arranged on the said outer surface of said body (KT) and with said assembly department (13) in base portion (12) contacting part separate position farthest.
9. according to each described motor compressor in the claim 1 to 3, it is characterized in that:
Said waveform generation portion (52) predicts the waveform of the vibration that produces in the said body (KT) based on the rotating speed of said electric motor (23).
10. according to each described motor compressor in the claim 1 to 3, it is characterized in that:
Said at least one vibration application devices (45a-45c) comprises the piezoelectric device (45a-45c) that applies vibration according to the voltage that is applied through expansion to said body (KT).
CN2012100847945A 2011-03-31 2012-03-27 Motor-driven compressor Pending CN102734162A (en)

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EP2505840A2 (en) 2012-10-03
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KR20120112138A (en) 2012-10-11
US20120251361A1 (en) 2012-10-04

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