WO2017047338A1 - Compresseur électrique hermétique - Google Patents

Compresseur électrique hermétique Download PDF

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Publication number
WO2017047338A1
WO2017047338A1 PCT/JP2016/074591 JP2016074591W WO2017047338A1 WO 2017047338 A1 WO2017047338 A1 WO 2017047338A1 JP 2016074591 W JP2016074591 W JP 2016074591W WO 2017047338 A1 WO2017047338 A1 WO 2017047338A1
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WO
WIPO (PCT)
Prior art keywords
stator
fit
press
shrink
fitting
Prior art date
Application number
PCT/JP2016/074591
Other languages
English (en)
Japanese (ja)
Inventor
郁男 江崎
茂樹 三浦
創 佐藤
小川　真
将成 宇野
紘史 島谷
Original Assignee
三菱重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to CN201680037659.1A priority Critical patent/CN107709775A/zh
Priority to EP16846209.1A priority patent/EP3315774A4/fr
Publication of WO2017047338A1 publication Critical patent/WO2017047338A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • 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
    • 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

Definitions

  • the present invention relates to a sealed electric compressor in which a compression mechanism and an electric motor for driving the compression mechanism are built in a cylindrical sealed housing.
  • a rotary type or scroll type etc. type having a compression mechanism and an electric motor for driving the compression mechanism in a cylindrical closed housing
  • An electric compressor is used.
  • a stator (stator) of an electric motor is formed by laminating a plurality of annular punched and formed electromagnetic steel sheets to form a stator core of a predetermined thickness, and winding a coil winding thereon.
  • the stator is fixedly installed by shrink fitting or press fitting on the inner peripheral surface of the closed housing.
  • Patent Document 1 discloses a pair of upper and lower end portions of the outer peripheral edge of the stator fixed to upper and lower ring-shaped intermediate members, and the ring-shaped intermediate member is shrink-fit to the inner peripheral surface of the sealed housing.
  • the expansion groove portion extending in the cylinder axial direction is provided at a plurality of locations in the circumferential direction by partially expanding the inner diameter with respect to the portion where the stator on the sealed housing side is shrink-fit, and a portion that does not contact the outer periphery of the stator What is formed is shown.
  • Patent Document 2 in the plurality of bulging grooves provided in the circumferential direction, the closed housing and the stator core do not contact each other and are not shrink-fit or press-fit, but the stator core is Since the clamping force is applied from substantially the entire circumferential direction in the entire range in the thickness direction, the reduction effect of the compressive stress and the magnetic loss is small, and the improvement effect of the motor efficiency is limited. Further, in the cases shown in Patent Documents 3 and 4, since the shape of the stator core has to be changed, there is a problem that influence on the magnetic performance and the motor performance of the stator can not be avoided.
  • the present invention has been made in view of such circumstances, and does not change the shape of the stator core of the stator and does not particularly increase the size of the hermetic housing, and the compression at the time of shrink fitting or press fitting of the stator.
  • An object of the present invention is to provide a sealed electric compressor capable of reducing stress and magnetic loss and improving motor efficiency.
  • the sealed type electric compressor of the present invention adopts the following means. That is, the sealed electric compressor according to one aspect of the present invention is fixedly installed by shrink-fitting or press-fitting in the sealed housing, a cylindrical sealed housing, a compression mechanism fixedly installed in the sealed housing, And an electric motor for driving the compression mechanism through a drive shaft, wherein the electric motor is shrink-fit or press-fitted into the inner peripheral surface of the sealed housing only in a partial range h in the thickness direction of the stator.
  • the remaining part is made noncontact with the inner peripheral surface of the housing by expanding the inner diameter of the sealed housing.
  • only a partial range h in the thickness direction of the stator is shrink-fit or press-fit to the inner peripheral surface of the closed housing, and the remaining portion is expanded in diameter on the inner peripheral surface of the closed housing.
  • the thickness dimension of the stator so that the minimum holding force necessary for fixedly installing the electric motor in the sealed housing can be secured because the housing is configured to be noncontact with the inner circumferential surface of the housing. Only fit a part of the area h into the inner circumferential surface of the sealed housing by shrink fitting or press fitting, and do not shrink fit or press fit the remaining part, so as not to be in contact with the inner circumferential surface of the housing.
  • the motor efficiency can be improved to improve the motor performance without affecting the magnetic performance of the stator.
  • the diameter of only the portion of the sealed housing corresponding to the installation site of the stator may be enlarged, and the enlargement of the sealed housing and hence the sealed electric compressor can be avoided.
  • the thickness direction range h of the stator which is shrink fitted or pressed into the inner peripheral surface of the hermetic housing, is all
  • the thickness L is in the range of 0.05 L to 0.75 L with respect to the dimension L.
  • the thickness direction range h of the stator to be shrink-fit or press-fit on the inner peripheral surface of the hermetic housing is in the range of 0.05 L to 0.75 L with respect to the total thickness direction dimension L. Therefore, the compressive stress and magnetic loss due to the shrink fitting or press fitting can be reduced as much as possible while securing the holding force necessary for fixing and installing the electric motor. That is, by setting the range h in which the stator is shrink-fit or press-fit to 0.05L or more of the total thickness dimension L, the minimum necessary stator holding power is ensured, and the range h in which the shrink-fit or press-fit is performed.
  • the total thickness dimension L equal to or less than 0.75 L, compressive stress and magnetic loss of the stator due to shrink fitting or press fitting can be sufficiently reduced. Therefore, it is not necessary to change the shape of the stator, and it is possible to improve the motor efficiency and improve the motor performance while not affecting the magnetic performance.
  • the thickness direction range h in which the pressure fitting or press fitting is performed on the inner peripheral surface of the hermetic housing of the stator is The stator may have one end, another end, both ends, or a central portion in the thickness direction of the stator.
  • the thickness direction range h to be shrink-fit or press-fit on the inner peripheral surface of the closed housing of the stator is one end portion in the thickness direction of the stator, the other end portion, both end portions, the central portion Since the thickness direction range h in which the stator is shrink-fit or press-fit is one of the one end portion, the other end portion, both end portions or the center portion in the thickness direction of the stator, It may be set to an optimum position in consideration of diameter expansion processing, a contact distance at the time of inserting the stator into a shrink fit position of the sealed housing or a press fit position, and the like.
  • the shrink fit or press fit range h any of one end part, the other end part, both end sites, and the center part in the thickness direction of the stator, the mutual contact when inserting in the shrink fit or press fit position of the sealed housing Since the distance can be shortened, in particular the press-in can be facilitated.
  • At least a partial area h of the stator is shrink-fit or press-fit in the inner peripheral surface of the hermetic housing.
  • the portion corresponding to the portion to be cut is an inner diameter D having a shrink fit or press fit allowance, and the other part has the same inner diameter D as the shrink fit or press fit portion according to its position, the inner diameter D1 into which the stator can be inserted, Alternatively, the inner diameter D2 is larger than that.
  • the inner peripheral surface of the sealed housing has an inner diameter D having a shrink fit margin or a press fit margin, at least a portion corresponding to a portion where the partial range h of the stator is shrink fit or press fit;
  • the other part has the same inner diameter D as the shrink-fit or press-in part, the inner diameter D1 where the stator can be inserted, or the larger inner diameter D2, so the partial range h in the thickness direction of the stator Can be fixed by shrink-fitting or press-fitting on the inner peripheral surface of the sealed housing having an inner diameter D having a shrink-fit or press-fit margin, and the other part of the sealed housing is shrink-fitted or Insert the stator smoothly into the sealed housing by setting the same inner diameter D as the press-in portion and the inner diameter D2 which can be inserted or larger than the inner diameter D1 of the stator, It can be shrink fit or press fit in a fixed portion. Therefore, the stator can be fixedly installed without increasing the size of the closed housing
  • only a partial range h of the thickness dimension of the stator can be provided on the inner peripheral surface of the sealed housing so as to ensure the minimum holding force necessary for fixedly installing the electric motor in the sealed housing.
  • Compression stress and magnetic force due to shrink-fit or press-fit of the stator, by shrink-fit or press-fit against the housing and installing the remaining portion in non-contact with the inner circumferential surface of the housing without shrink-fit or press-fit Because losses can be minimized, motor efficiency can be improved to improve motor performance without affecting the magnetic performance of the stator in any way.
  • the diameter of only the portion of the sealed housing corresponding to the installation site of the stator may be enlarged, and the enlargement of the sealed housing and hence the sealed electric compressor can be avoided.
  • FIG. 1 is a longitudinal sectional view of a hermetic electric compressor according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view corresponding to aa in FIG. It is a longitudinal cross-sectional view of the sealed type electric compressor of other embodiment (1). It is a longitudinal cross-sectional view of the hermetic type electric compressor of other embodiment (2). It is a longitudinal cross-sectional view of the sealed type electric compressor of other embodiment (3). It is a graph which shows the relationship between the magnetic loss by the shrinkage fit of the stator in the said sealed type electric compressor and stator holding power, and a shrinkage fit range rate.
  • FIG. 1 is a longitudinal sectional view of a hermetic electric compressor according to a first embodiment of the present invention
  • FIG. 2 is a view corresponding to the aa cross section thereof
  • FIG. 6 is a schematic view of the hermetic electric compressor. A graph showing the relationship between the magnetic loss due to the shrink fit of the stator and the stator holding power and the shrink fit range ratio is shown.
  • hermetic-type electric compressor 1 a rotary-type hermetic electric compressor is exemplified as the hermetic-type electric compressor 1, but the invention is not limited to this, and the same applies to other types of hermetic-type electric compressor such as a scroll type. Of course it can be applied to
  • the hermetic electric compressor 1 includes a cylindrical hermetic housing 2 whose upper and lower ends are sealed by covers 3 and 4.
  • the electric motor 5 is fixedly installed in the upper part of the inside, and the electric motor 5 is electrically driven in the lower part.
  • a compression mechanism (rotary compression mechanism) 6 driven by a motor 5 is fixedly installed.
  • a plurality of mounting legs 7 are provided on the lower outer periphery of the sealed housing 2, and a sealed terminal 8 is provided on the upper part of the sealed housing 2 for supplying power to the electric motor 5 through the cover 3. ing.
  • a suction pipe 9 is connected to the lower part of the closed housing 2 for drawing the low pressure refrigerant gas returned from the refrigeration cycle side into the compression mechanism 6 via an accumulator (not shown).
  • a discharge pipe 10 is provided in the upper part of the closed housing 2 so as to penetrate the cover 3, and the high-temperature and high-pressure refrigerant gas compressed by the compression mechanism 6 can be discharged to the outside (refrigerating cycle).
  • the electric motor 5 is composed of a stator (stator) 11 and a rotor (rotor) 12, and the stator 11 is fixedly installed by shrink fitting or press-fitting on the inner peripheral surface of the sealed housing 2.
  • the drive shaft 13 is integrally coupled to the rotor 12, and the rotational drive force can be transmitted to the compression mechanism 6 via the drive shaft 13.
  • An eccentric portion 14 is provided at a lower portion of the drive shaft 13 in correspondence with the installation position of the rolling piston 19 of the compression mechanism 6.
  • the compression mechanism (rotary compression mechanism) 6 forms a cylinder chamber 16, and a cylinder body 15 fixedly installed in the sealed housing 2 at a position corresponding to the eccentric portion 14 of the drive shaft 13, and upper and lower surfaces of the cylinder body 15 And the upper bearing 17 and the lower bearing 18 which rotatably support the drive shaft 13, and the eccentric portion 14 of the drive shaft 13 are rotatably fitted to the cylinder chamber 16.
  • a rolling piston that rotates inside, a groove (not shown) slidably fitted in a groove (not shown) provided in the cylinder main body 15, and a vane (not shown) etc. that divides the inside of the cylinder chamber 16 into a suction side and a discharge side And is configured.
  • the compression mechanism 6 of such a configuration is well known.
  • a low pressure refrigerant gas is drawn into the cylinder chamber 16 of the compression mechanism 6 from the suction pipe 9 through the suction port 20.
  • the refrigerant gas is compressed by the rotation of the rolling piston 19 and then discharged into the discharge chamber 21 through a discharge port and a discharge valve (not shown), and then discharged into the closed housing 2 from there.
  • the high temperature and high pressure refrigerant gas discharged into the sealed housing 2 passes through the refrigerant passage and the like provided between the inner peripheral surface of the sealed housing 2 and the outer peripheral surface of the stator 11 of the electric motor 5 to the upper space in the sealed housing 2 It is led and discharged through the discharge pipe 10 to the outside (the refrigeration cycle side).
  • An oil pump 22 is provided at the lower end portion of the drive shaft 13, and lubricating oil filled in the bottom portion of the sealed housing 2 via an oil supply hole 23 or the like provided in the drive shaft 13 is It is possible to supply oil to lubricating parts such as bearings and sliding parts.
  • the stator 11 of the electric motor 5 reduces compression stress and magnetic loss (iron loss) at the time of shrink fitting or press fitting on the inner peripheral surface of the sealed housing 2, and motor efficiency In order to improve the following, it is shrink-fit or press-fit as follows.
  • the stator 11 of the electric motor 5 is formed by punching and forming electromagnetic steel plates in an annular shape, laminating a plurality of them to form a stator iron core 11A of a predetermined thickness L, and winding a coil winding 11B around its teeth portion It is. Since the stator core 11A here is shrink-fit or press-fit on the inner peripheral surface of the closed housing 2, the outer shape is not particularly deformed, and has a cylindrical shape.
  • the inner peripheral surface of the sealed housing 2 to which the stator core 11A of the stator 11 is shrink-fit or press-fit is formed by burning only a partial range h (h1) of the full thickness dimension L of the stator 11 to the inner peripheral surface of the housing
  • the inner diameter of the press-fitting portion 2A corresponding to the partial range h (h1) is D
  • the remaining portion has the same inner diameter D as the shrink-fitting or press-fitting portion 2A according to its position.
  • the inner diameter of the sealed housing 2 is such that the inner diameter of the shrink fit or press fit portion 2A of the stator 11 is the inner diameter D having a shrink fit margin or press fit margin, compared to the shrink fit or press fit portion 2A.
  • the inner diameter of the lower portion 2B is the same as the inner diameter D as the shrink-fit or press-fit portion 2A, and the inner diameter D of the upper portion 2C is smaller than the shrink-fit or press-fit portion 2A before welding the cover 3
  • the inner diameter D1 (D1> D) or an inner diameter D2 (D2> D1) larger than the inner diameter D1 (D1> D) is set so that the stator 11 can be inserted in this state.
  • the graph shown in FIG. 6 shows the relationship between the magnetic loss and the stator holding power due to the shrink fitting of the stator 11 in the hermetic motor compressor 1 and the shrink fitting range ratio (h (h1) / L).
  • the thickness direction range h (h1) of the stator 11 to be shrink-fitted or press-fit is set to the dimension L of the entire thickness direction of the stator 11 However, it is necessary to make it 0.05L or more. Further, in order to sufficiently reduce the compressive stress and magnetic loss of the stator 11 due to the shrink fitting or press fitting, the thickness direction range h (h1) of the stator 11 to be shrink fitted or press fitted is the dimension of the entire thickness direction of the stator 11 It is necessary to set it as 0.75 L or less to L. A more preferable range h (h1) is 1 / 3L ⁇ h (h1) ⁇ 1 / 2L.
  • the following effects can be obtained.
  • the compression mechanism 6 when the compression mechanism 6 is driven through the drive shaft 13 by supplying electric power to the electric motor 5 and rotating the rotor 12, low pressure refrigerant gas is supplied through the suction pipe 9 After being drawn into the cylinder chamber 16 of the compression mechanism 6 and compressed by the rotation of the rolling piston 19, it is discharged into the discharge chamber 21 through a discharge port and a discharge valve (not shown).
  • the high-temperature and high-pressure compressed gas is discharged from the discharge chamber 21 into the inside of the sealed housing 2, and then, is passed through the refrigerant passage formed between the inner peripheral surface of the closed housing 2 and the outer peripheral surface of the stator 11.
  • the air is led to the upper space of the fuel cell and discharged from there through the discharge pipe 10 to the refrigeration cycle side.
  • the electric motor 5 is rotated at a controlled rotational speed and keeps driving the compression mechanism 6.
  • the stator 11 When assembling the electric motor 5, the stator 11 is inserted into the sealed housing 2 before welding the cover 3, and a shrink fit or press-fit range h which is a partial range of the thickness direction dimension L of the stator 11 (H1) needs to be shrink-fit or press-fit to the shrink-fit or press-fit portion 2A of the sealed housing 2, and thereafter, the electric motor 5 is integrated in the closed housing 2 by incorporating the rotor 12 integrated with the drive shaft 13. It will be incorporated inside.
  • a partial range h (h1) of the thickness direction of the stator 11 of the electric motor 5 is shrink-fit or press-fit on the inner peripheral surface of the shrink-fit or press-fit portion 2A of the sealed housing 2
  • the inner diameter of the sealed housing 2 is expanded (expanded to D1 or D2) so that the inner peripheral surface of the housing is not in contact. That is, when the dimension in the entire thickness direction of the stator 11 is L, only the shrink fit or press fit range h (h1) which is a part thereof is set as the shrink fit or press fit range, “0.05L ⁇ h (h1) ⁇
  • the range is set to 0.75 L, preferably, “1/3 L ⁇ h (h1) ⁇ 1/2 L”.
  • h (h1) of the thickness direction dimension of the stator 11 is sealed so that the minimum holding force necessary for fixing and installing the electric motor 5 in the sealed housing 2 can be secured.
  • the diameter of only a part of the hermetic housing 2 corresponding to the installation site of the stator 11 may be enlarged, and the enlargement of the hermetic housing 2 and hence the hermetic electric compressor 1 can be avoided. Furthermore, since the remaining portion of the stator 11 which is not shrink-fit or press-fit is not in contact with the inner circumferential surface of the hermetic housing 2 due to the gap S, the magnetic excitation force on the stator 11 side is propagated to the hermetic housing 2 It is also possible to suppress the generation of noise due to noise.
  • the shrink fit or press-fit range h (h1) of the stator 11 with respect to the dimension L in the entire thickness direction of the stator 11 is in the range of 0.05L ⁇ h (h1) ⁇ 0.75L, preferably 1 / 3L ⁇ Since h (h1) ⁇ 1/2, the compressive stress and magnetic loss of the stator 11 by shrink fitting or press fitting are as much as possible while securing the holding force necessary for fixing and installing the electric motor 5. It can be made smaller. That is, by setting the range h (h1) in which the stator 11 is shrink-fit or press-fit to 0.05 L or more of the total thickness dimension L, the minimum necessary stator holding power is secured, and the shrink-fit or press-fit is performed. By setting the range h (h1) to be equal to or less than 0.75 L of the total thickness direction dimension L, the compressive stress and magnetic loss of the stator 11 due to shrink fitting or press fitting can be sufficiently reduced.
  • the press-fit portion 2A corresponding to the portion of the inner circumferential surface of the sealed housing 2 on which the partial range h (h1) of the stator 11 is shrink-fitted or press-fitted is the inside diameter D having a shrink-fit or press-fit allowance.
  • the lower part 2B of the shrink fit or press fit portion 2A has the same inner diameter D as the shrink fit or press fit part 2A, and the upper part 2C has an inner diameter D1 that the stator 11 can insert or larger D2
  • the lower part 2B of the shrink fit or press fit portion 2A has the same inner diameter D as the shrink fit or press fit part 2A
  • the upper part 2C has an inner diameter D1 that the stator 11 can insert or larger D2
  • a partial range h (h1) in the thickness direction of the stator 11 is fixed by shrink-fitting or press-fitting on the inner peripheral surface of the sealed housing 2 having an inner diameter D having a shrink-fit or press-fit margin.
  • the other part 2B, 2C of the sealed housing 2 has the same inner diameter D as the shrink-fit or press-in part 2A and the inner diameter D1 for inserting the stator 11 or the inner diameter D2 larger than that.
  • the stator 11 can be smoothly inserted from the upper end portion of the closed housing 2 with 3 removed, and can be shrink-fit or press-fit to the shrink-fit or press-fit portion 2A.
  • the diameter of the closed housing 2 is not particularly increased by appropriately enlarging the diameter of only the upper part 2C of the necessary part of the closed housing 2, for example, the upper part 2C than the shrink fit or press fit part 2A of the closed housing 2.
  • the stator 11 can be fixedly installed, and the enlargement of the sealed housing 2 and hence the sealed electric compressor 1 can be avoided.
  • one end portion on the upper end side is set as a partial range h (h1) to be shrink-fit or press-fit with respect to the full thickness direction dimension L of the stator 11
  • h partial range
  • the stator 11 can be inserted from the upper end of the sealed housing 2 and can be shrink fit or press fit.
  • the other end portion on the lower end side is set as a partial range h (h 2) for shrink fitting or press fitting;
  • the inner diameter of the shrink fit or press fit portion 2D is an inner diameter D having a shrink fit margin or a press fit margin, and the inner diameter of the upper portion 2E is the same inner diameter D as the shrink fit or press fit portion 2D than the shrink fit or press fit portion 2D.
  • the inner diameter D1 (D1> D) or an inner diameter D2 larger than that (D2> D1) is adopted.
  • only the lower half of the sealed housing 2 may have a gap S between the outer periphery of the stator 11 and the diameter may be increased so as not to contact each other. , And may be shrink-fit or press-fit.
  • the inner diameter of the shrink-fit or press-fit portion 2G or 2H is an inner diameter D having a shrink-fit or press-fit allowance, and the inner diameter of any one of the upper portion 2I and the lower portion 2J than the shrink-fit or press-fit portion 2G or 2H is Since the same inner diameter D may be used as the shrink-fit or press-fit portions 2G and 2H, the same inner diameter D or an inner diameter D1 larger than that (D1> D) or an inner diameter D2 larger than D1 (D2> D1), and the other inner diameter The inner diameter D1 (D1> D) or a larger inner diameter D2 (D2> D1) to which the stator 11 can be easily inserted before welding the covers 3 and 4 is used.
  • the gap S is made between the outer periphery of the stator 11 It is set as the set up.
  • the same effect as that of the first embodiment can be obtained.
  • the total holding power due to the partial ranges h3 and h4 in which shrinkage fitting or press fitting is set separately in plural places fixes the electric motor 5 to the sealed housing 2 It should be possible to ensure the minimum holding power necessary for installation.
  • the central region excluding both end portions is set as a partial range h (h5) for shrink fitting or press fitting;
  • the inner diameter of the fitting or press-in portion 2L is an inner diameter D having a shrink-fitting or press-in allowance, and the inner diameters of the upper portion 2M and the lower portion 2N are easier to insert the stator 11 than the shrink-fitting or press-in portion 2L.
  • the gap S is set between the outer periphery of the stator 11 and the inner periphery D1.
  • the same effects as those of the first embodiment can be obtained by adopting the configuration as described above.
  • the inner diameter of the upper portion 2M and the lower portion 2N of the sealed housing 2 corresponding to the remaining portion excluding the partial range h (h5) of the stator 11 may be D2, and the inner diameter of the other portions may be D1.
  • the thickness direction range h (sintered or press-fit into the inner peripheral surface of the sealed housing 2 of the stator 11)
  • the thickness direction range h (h1 to h5) in which the stator 11 is shrink-fitted or press-fitd by setting h1 to h5) to one of the one end portion, the other end portion, both end portions and the center portion in the thickness direction of the stator 11. ) May be set at any one of the one end portion, the other end portion, both end portions or the central portion in the thickness direction of the stator 11, and diameter expansion processing of the sealed housing 2 or shrink fitting position of the stator 11 or It becomes possible to set to the optimal position which considered the contact distance etc. at the time of inserting in a press-fit position.
  • the setting of the thickness direction range h (h1 to h5) in which the stator 11 is shrink-fitted or press-fit can be given freedom, and it is selected when determining the outer shape of the sealed housing 2 and the fixing structure of the stator 11.
  • the degree of freedom can be secured.
  • the shrink-fit or press-fit range h (h1 to h5) is any one of the one end portion, the other end portion, both end portions, and the center portion in the thickness direction of the stator 11, the shrink fit or press-fit of the sealed housing 2 The distance of contact with one another upon insertion into the position can be reduced and in particular the press-in can be made easier.
  • the present invention is not limited to the invention according to the above-described embodiment, and appropriate modifications can be made without departing from the scope of the invention.
  • the above-mentioned embodiment explained an example applied to a single cylinder rotary type closed type electric compressor 1 as an example of the closed type electric compressor 1, it is not limited to this but a multi-cylinder rotary A variety of other enclosed electric compressors of the enclosed type in which the electric motor 5 is fixedly installed in the enclosed electric compressor or the enclosed housing 2, for example, the scroll type enclosed electric compressor or the electric
  • the present invention can be widely applied to a multistage compressor or the like incorporating a plurality of compression mechanisms driven by the motor 5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

La présente invention réduit une contrainte de compression et les pertes magnétiques au cours de l'ajustement par frettage ou de l'ajustement par pressage d'un stator, et améliore le rendement du moteur, sans qu'il soit nécessaire de changer la forme d'un noyau de stator du stator et sans agrandir un boîtier scellé de manière significative. Un compresseur électrique hermétique (1), dans lequel un moteur électrique (5) et un mécanisme de compression (6) sont installés de manière fixe à l'intérieur d'un boîtier scellé cylindrique (2), et le mécanisme de compression (6) peuvent être entraînés par le moteur électrique (5) par l'intermédiaire d'un arbre d'entraînement (13), le moteur électrique (5) étant installé par ajustement par frettage ou ajustement par pressage de sorte que seule une plage partielle (h1 ou h5) du moteur dans le sens de l'épaisseur du stator (11) soit fixée sur une surface périphérique interne du boîtier scellé (2), et la partie restante du moteur est dans un état de non-contact avec la surface périphérique interne du boîtier en raison de l'expansion du diamètre intérieur du boîtier scellé (2).
PCT/JP2016/074591 2015-09-17 2016-08-24 Compresseur électrique hermétique WO2017047338A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680037659.1A CN107709775A (zh) 2015-09-17 2016-08-24 密闭型电动压缩机
EP16846209.1A EP3315774A4 (fr) 2015-09-17 2016-08-24 Compresseur électrique hermétique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-184054 2015-09-17
JP2015184054A JP6151324B2 (ja) 2015-09-17 2015-09-17 密閉型電動圧縮機

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WO2017047338A1 true WO2017047338A1 (fr) 2017-03-23

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PCT/JP2016/074591 WO2017047338A1 (fr) 2015-09-17 2016-08-24 Compresseur électrique hermétique

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JP (1) JP6151324B2 (fr)
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6925519B2 (ja) * 2018-05-09 2021-08-25 三菱電機株式会社 回転電機
CN112018928B (zh) * 2019-05-31 2023-06-27 日本电产株式会社 马达及包含该马达的电气设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04339185A (ja) * 1991-05-14 1992-11-26 Sanyo Electric Co Ltd 密閉型圧縮機
US20060133944A1 (en) * 2004-12-17 2006-06-22 Doepker Roy J Scroll machine with brushless permanent magnet motor
JP2010174772A (ja) * 2009-01-30 2010-08-12 Panasonic Corp 密閉型圧縮機
JP2014117090A (ja) * 2012-12-11 2014-06-26 Mitsubishi Heavy Ind Ltd 電動機、及び、電動機一体型圧縮機

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3598647B2 (ja) * 1996-04-24 2004-12-08 株式会社デンソー 密閉型電動圧縮機
TW552352B (en) * 1999-06-29 2003-09-11 Sanyo Electric Co Sealed rotary compressor
JP4816358B2 (ja) * 2006-09-19 2011-11-16 ダイキン工業株式会社 モータおよび圧縮機
JP2010041852A (ja) * 2008-08-06 2010-02-18 Daikin Ind Ltd 固定子、モータ、及び圧縮機
JP5978456B2 (ja) * 2011-09-26 2016-08-24 パナソニックＩｐマネジメント株式会社 電動圧縮機
US20130251551A1 (en) * 2012-03-23 2013-09-26 Bitzer Kuehlmaschinenbau Gmbh Compressor shell with multiple diameters
JP2014214669A (ja) * 2013-04-25 2014-11-17 株式会社豊田自動織機 電動圧縮機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04339185A (ja) * 1991-05-14 1992-11-26 Sanyo Electric Co Ltd 密閉型圧縮機
US20060133944A1 (en) * 2004-12-17 2006-06-22 Doepker Roy J Scroll machine with brushless permanent magnet motor
JP2010174772A (ja) * 2009-01-30 2010-08-12 Panasonic Corp 密閉型圧縮機
JP2014117090A (ja) * 2012-12-11 2014-06-26 Mitsubishi Heavy Ind Ltd 電動機、及び、電動機一体型圧縮機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3315774A4 *

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JP2017057807A (ja) 2017-03-23
EP3315774A1 (fr) 2018-05-02
JP6151324B2 (ja) 2017-06-21
EP3315774A4 (fr) 2018-07-25
CN107709775A (zh) 2018-02-16

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