WO2012114420A1 - Equipement de refroidissement, et moteur et inverseur équipés de l'équipement de refroidissement - Google Patents

Equipement de refroidissement, et moteur et inverseur équipés de l'équipement de refroidissement Download PDF

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Publication number
WO2012114420A1
WO2012114420A1 PCT/JP2011/053651 JP2011053651W WO2012114420A1 WO 2012114420 A1 WO2012114420 A1 WO 2012114420A1 JP 2011053651 W JP2011053651 W JP 2011053651W WO 2012114420 A1 WO2012114420 A1 WO 2012114420A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
motor
cooling device
housing
refrigerant pipe
Prior art date
Application number
PCT/JP2011/053651
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English (en)
Japanese (ja)
Inventor
横山篤
荒井雅嗣
Original Assignee
株式会社日立製作所
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.)
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Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP2013500720A priority Critical patent/JP5676737B2/ja
Priority to PCT/JP2011/053651 priority patent/WO2012114420A1/fr
Publication of WO2012114420A1 publication Critical patent/WO2012114420A1/fr

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20927—Liquid coolant without phase change
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets

Definitions

  • the present invention relates to a cooling device, and a motor and an inverter including the cooling device, and more particularly to a cooling device having a high cooling performance, and a motor and an inverter including the cooling device.
  • Patent Documents 1 and 2 disclose techniques for improving the cooling performance of such electric devices.
  • the motor cooling device disclosed in Patent Document 1 cools the motor by providing a frame on the outside of the motor and a cooling jacket on the frame, and circulating the refrigerant in the cooling jacket.
  • a relatively high cooling performance can be ensured by cooling the motor using a refrigerant that can be cooler than the cooling water.
  • the refrigerant flow path is formed by combining the members constituting the motor case, when high-pressure refrigerant flows in the refrigerant flow path, the refrigerant leaks from the connection portion between the members, and the cooling performance May be reduced.
  • a refrigerant flow path formed by combining members such as aluminum, it is necessary to improve the sealing performance of the connecting portion between the members, and it is extremely difficult to ensure high sealing performance against the high-pressure refrigerant. .
  • the cooling performance of the motor is improved by improving the sealing performance of the cooling water flow path. Efficiency can be increased.
  • the motor outer peripheral surface and the cooling water pipe having a circular cross section are in line contact, a gap exists between the motor and the cooling water pipe, and the thermal resistance between the motor outer peripheral surface and the cooling water pipe increases. Therefore, for example, even if a relatively low temperature refrigerant is used instead of the cooling water, a sufficient cooling effect cannot be obtained.
  • the pipe when the refrigerant flowing inside the pipe is cooler than the atmosphere around the motor, the pipe is exposed to the atmosphere around the motor, so that the refrigerant that should cool the motor is heated from the surrounding atmosphere. May be absorbed, and the cooling efficiency of the motor may be reduced.
  • the present invention has been made in view of the above problems, and the object of the present invention is to efficiently convert the heat of the electric device into the refrigerant when the electric device such as a motor is cooled using the refrigerant of the refrigeration cycle. Another object is to provide a cooling device capable of transmitting, and a motor and an inverter including the cooling device. Furthermore, a cooling device capable of effectively preventing the heat of the atmosphere around the cooling device from being absorbed by the refrigerant and ensuring higher cooling performance, and a motor and an inverter including the cooling device are provided. It is to provide.
  • a cooling device is a cooling device including a refrigerant pipe that cools an object to be cooled with a refrigerant, and the refrigerant pipe is formed into a plane shape as a whole with a long pipe.
  • One surface side of the surface shape is covered with a housing, and the other surface side is a contact portion with the object to be cooled, and the gap between the housing and the contact portion has a thermal conductivity higher than that of air.
  • It is a cooling device characterized by being filled with a substance having a high content.
  • the refrigerant pipe with a small number of connection portions formed as a whole with a long pipe as a whole, even when a high-pressure refrigerant of a refrigeration cycle is used for cooling an object to be cooled such as an electric device. It is possible to suppress the leakage of the refrigerant from the refrigerant flow path and suppress the deterioration of the cooling performance of the cooling device.
  • the refrigerant pipe is arranged in contact with the object to be cooled, so that the refrigerant can be arranged close to the object to be cooled, and the object to be cooled can be efficiently
  • the object to be cooled can be cooled by absorbing the heat released from.
  • a gap partially existing between the object to be cooled can be filled with the substance, and the heat released from the object to be cooled can be efficiently transferred to the refrigerant in the refrigerant pipe via the substance.
  • the cooling performance of the cooling device can be further enhanced.
  • the heat released from the object to be cooled can be efficiently obtained by filling the gap that can be generated between the refrigerant pipe and the object to be cooled with a substance having high thermal conductivity. Therefore, it is possible to transmit to the refrigerant in the refrigerant pipe, and to suppress an increase in the temperature of the object to be cooled, thereby realizing efficient operation of the object to be cooled.
  • Example 1 of the cooling device which concerns on this invention, and is the longitudinal cross-sectional view which showed the state applied to the motor.
  • FIG. 10 is a longitudinal sectional view in which an inverter is disposed between the motor and the cooling device shown in FIG. 9.
  • Example 1 and 2 show a first embodiment of a cooling device according to the present invention, which shows a state applied to a motor.
  • a motor 1000 shown in FIG. 1 is roughly composed of a motor main body 100 and a cooling device 200 for cooling the motor main body 100.
  • the motor main body 100 includes a rotating rotor 1 and a stator 2 disposed around the rotor 1 and wound with a coil 3, and a motor case 11 for housing them.
  • the motor body 100 includes a motor cover 12 having a rotation angle sensor 13 on the inner surface 12 ⁇ / b> A on the side, and the motor cover 12 is attached to the side surface of the motor case 11, so that the rotor 1 accommodated inside the motor body 100. And the stator 2 are protected from the external environment.
  • a signal such as the rotation speed of the rotor 1 detected by the rotation angle sensor 13 is transmitted to a rotation control device (not shown) and used to control the rotation of the rotor 1.
  • bearings 14 and 15 are provided between the motor case 11 and the rotor 1 and between the motor cover 12 and the rotor 1, and when the motor case 11 is fixedly attached to a vehicle or the like. In other words, the rotor 1 can rotate about the rotation axis L with respect to the motor case 11 and the motor cover 12.
  • a cooling device 200 for cooling the motor body 100 is disposed outside the motor body 100.
  • the cooling device 200 cools and circulates the refrigerant pipe 21 that is spirally configured to come into contact with the outer peripheral surface 11A of the motor case 11, the housing 26 that covers the outer peripheral side of the refrigerant pipe 21, and the refrigerant R.
  • a cooling device 20 constituting a refrigeration cycle, which is a kind of thermodynamic cycle, that is, a compressor 20A, a heat exchanger 20B, and a refrigerant pump 20C.
  • the refrigerant pipe 21 has fewer connection parts than a refrigerant flow path constituted by other parts formed by combining a plurality of members, for example, there are few seal members such as rubber used for the connection parts.
  • the refrigerant hardly leaks from the seal portion, and even when a high-pressure refrigerant circulates in the refrigerant pipe 21 through the refrigeration equipment 20 or the like, excellent sealing performance and non-leakage can be ensured.
  • the refrigerant pipe 21 has a substantially oval cross section at a portion located on the outer peripheral surface 11A of the motor case 11, and a cross section at a portion that directly contacts the outer peripheral surface 11A is linear and flat.
  • the cross-sectional shape of the refrigerant pipe 21 includes a polygonal shape such as a substantially triangular shape or a substantially quadrangular shape in addition to the illustrated elliptical shape.
  • a refrigerant discharge part 22 and a refrigerant supply part 23 extending in parallel with the direction of the rotation axis L of the rotor 1 are provided at both ends of the refrigerant pipe 21 wound spirally along the outer peripheral surface 11A of the motor case 11. Then, the refrigerant R that has absorbed the heat radiated from the motor main body 100 through the spiral refrigerant pipe 21 is sent to the refrigeration equipment 20 via the refrigerant discharge part 22 and the refrigerant hose 24 attached to the refrigerant discharge part 22. It is configured as follows.
  • the heat of the refrigerant R is released to the outside by the compressor 20 ⁇ / b> A, the heat exchanger 20 ⁇ / b> B, and the like described above, and the cooled refrigerant R is again supplied by the refrigerant pump 20 ⁇ / b> C via the refrigerant hose 25 and the refrigerant supply unit 23.
  • the refrigeration cycle is configured to be pressure-fed to the refrigerant pipe 21 around the motor body 100.
  • the cooling device 200 is made of a non-metallic material (for example, resin) that covers the refrigerant pipe 21, a part of the refrigerant discharge part 22, the refrigerant supply part 23, and the outer peripheral surface 11A of the motor case 11 (motor main body 100).
  • a housing 26 is further provided. Of the region defined by the inner peripheral surface 26A of the housing 26 and the outer peripheral surface 11A of the motor case 11, a region other than the refrigerant pipe 21, that is, the housing 26, the refrigerant pipe 21, and the motor case.
  • the space between the 11 contacting portions 21 ⁇ / b> A is filled with a substance F having a higher thermal conductivity than air, in particular, a fluid F having a high fluidity.
  • the fluid F is also filled in a gap 29 existing between the refrigerant pipe 21 and the outer peripheral surface 11 ⁇ / b> A of the motor case 11.
  • the fluid F (substance) is a liquid or a resin, and examples of the liquid include an antifreeze and an inert liquid having high thermal conductivity. Examples of the resin include a high thermal conductivity resin.
  • this fluid F has fluidity
  • the refrigerant R can be circulated only by the refrigerant pump 20C. Even when the cooling performance of the refrigeration cycle is lowered in this way, the refrigerant R can be cooled by the heat radiation from the surface of the cooling device 200, so that the cooling device 200 is operated efficiently, Temperature rise can be suppressed.
  • a procedure (process) for assembling the motor 1000 provided with the cooling device 200 will be described.
  • a procedure for assembling the motor main body 100 first, a rotor 1, a stator 2 around which a coil 3 is wound, and a motor case 11 having a bearing 14 at one end are prepared. Thereafter, the stator 2 is inserted into the motor case 11 until the step 16 provided on the inner peripheral surface of the motor case 11 and the corner of the stator 2 abut, and then the bearing 14 provided on the motor case 11 and the rotor 1 The rotor 1 is inserted until the step 4 comes into contact. Then, the motor cover 12 having the bearing 15 and the rotation angle sensor 13 disposed on one surface in advance is attached to the motor case 11.
  • the cooling device 200 is assembled in a process different from the process of assembling the motor body 100. First, after the refrigerant pipe 21 is formed in a substantially spiral shape, the refrigerant discharge part 22 and the refrigerant supply part 23 are formed with both ends of the refrigerant pipe 21 being linear. Then, the housing 26 is attached so as to cover a part of the refrigerant pipe 21, the refrigerant discharge part 22, and the refrigerant supply part 23.
  • the cooling device 200 is moved in the direction of the rotation axis L of the rotor 1 (arrow A direction) so as to cover the outer peripheral surface 11A of the motor main body 100 assembled in the above procedure, and the cooling device 200 is attached to the motor main body 100 to be integrated.
  • the flat surface of the refrigerant pipe 21 is disposed so as to contact the outer peripheral surface 11 ⁇ / b> A of the motor case 11.
  • a fluid F having a thermal conductivity higher than that of air is injected into the housing 26 from a fluid inlet 26B (see FIG. 2) provided in the housing 26.
  • the region defined by the peripheral surface 26A is filled with the fluid F.
  • the air gap 29 exists in the outer peripheral surface 11 ⁇ / b> A of the refrigerant pipe 21 and the motor case 11.
  • the fluid F enters the gap 29, and the gap 29 can be filled with the fluid F.
  • a refrigerant hose 24 is attached to the refrigerant discharge part 22 and connected to the refrigeration equipment 20 (compressor 20A, heat exchanger 20B, refrigerant pump 20C).
  • the refrigerant pump 20 ⁇ / b> C is connected to a refrigerant hose 25 attached to the refrigerant supply unit 23.
  • the fluid F when removing the cooling device 200 from the motor main body 100, the fluid F can be discharged
  • FIG. 2 for example, when a resin is used as the fluid F and the resin is solidified, a step of discharging the fluid F from the fluid outlet 26C becomes unnecessary.
  • the fluid inlet 26B and the fluid outlet 26C can be provided at any position of the housing 26.
  • the motor main body 100 and the cooling device 200 are individually assembled and separated after being integrated, so that the cooling device 200 can be separated from the motor main body 100 without disassembling the motor main body 100, for example. It can be detached, and the assembly and maintenance of the motor body 100 and the cooling device 200 can be improved.
  • FIG. 2 schematically shows the piping of the refrigerant pipe in the motor of the first embodiment.
  • a refrigerant pipe 21 is spirally wound around the motor case 11, and the refrigerant R supplied from the refrigerant supply unit 23 via the refrigerant hose 25 rotates the rotor 1 in the refrigerant pipe 21. It flows spirally around the axis L, and is discharged from the refrigerant discharge port 22 to the outside of the housing 26.
  • adjacent refrigerant pipes 21 are in contact with each other and are wound around the motor case 11 in a spiral shape.
  • the rotor 1 is rotationally driven by an inverter circuit (not shown), so that the refrigerant pipe having high hermeticity is mainly produced even when the copper loss of the stator 2 is converted into heat and the stator 2 generates heat.
  • 21 is arranged close to or in contact with the outer peripheral surface 11A of the motor main body 100, and the refrigerant pipe 21 having a sealed structure that hardly leaks the high-pressure refrigerant R flowing through the refrigeration equipment 20 of the refrigeration cycle is used.
  • the released heat (mainly heat generated from the stator 2) can be efficiently absorbed by the refrigerant R.
  • the heat released from the motor main body 100 can be efficiently transmitted to the refrigerant R in the refrigerant pipe 21 via the motor case 11 (in the direction of the arrow X1).
  • an area 29 defined by the outer peripheral surface 11A of the motor case 11 and the inner peripheral surface 26A of the housing 26, in particular, a gap 29 that can be generated between the outer peripheral surface 11A of the motor case 11 and the refrigerant pipe 21 is a fluid F.
  • the heat generated in the stator 2 and transferred to the motor case 11 can be efficiently transferred through the fluid F in the gap 29.
  • the heat can be transmitted to the refrigerant R in the pipe 21 (in the direction of the arrow X2), and the heat released from the motor body 100 can be effectively released to the outside of the motor body 100.
  • the refrigerant pipe 21 having a large shape variation due to manufacturing variation or the like is used by filling the region such as the gap 29 with the fluid F having high fluidity, the fluid F has the shape variation.
  • the area can be filled with the fluid F easily and uniformly.
  • the heat released from the motor main body 100 can be transmitted via the fluid F having a high thermal conductivity, it is not necessary to attach the refrigerant pipe 21 firmly to the motor case 11. . Therefore, the pressure acting when the refrigerant pipe 21 is attached can be reduced, so that the refrigerant pipe 21 can be prevented from being damaged, and the cooling device 200 can be removed from the motor body 100 and maintained separately.
  • the refrigerant pipe 21 can be easily detached from the motor case 11, and the maintainability thereof can be further improved.
  • the motor body 100 is driven at a relatively low temperature. That is, in such a case, the temperature of the refrigerant R circulating in the refrigerant pipe 21 is generally lower than the outside air temperature of the motor 1000.
  • the housing 26 is made of a material having high thermal conductivity such as metal, the low-temperature refrigerant R in the refrigerant pipe 21 absorbs the heat of the outside air and the temperature of the refrigerant R rises, and the cooling device The cooling efficiency of 200 may be reduced.
  • the housing 26 is made of a non-metallic material having a relatively low thermal conductivity, and the heat exchange between the refrigerant R and the outside air is suppressed, so that the temperature of the refrigerant R becomes the atmospheric temperature. Even when the temperature is relatively lower than the above, the heat absorption effect of the housing 26 can suppress the heat absorption of the refrigerant R to suppress the temperature rise of the refrigerant R, thereby suppressing the decrease in the cooling efficiency of the cooling device 200.
  • Example 2 3 and 4 show a second embodiment of the cooling device according to the present invention, which shows a state applied to a motor.
  • the motor main body used in Example 2 is the same as the motor main body 100 used in Example 1, the same code
  • the cooling device 300 according to the second embodiment shown in FIG. 3 is mainly shown in FIG. 1 in that adjacent refrigerant pipes 31 wound around the outer peripheral surface 11A of the motor main body 100 are arranged at a predetermined interval. This is different from the cooling device 200 of the first embodiment.
  • the cooling device 300 also includes a circulation path 331 for circulating the fluid F in the housing 36, a fluid pump 330A for the circulation path 331, and a radiator 330 for cooling the fluid F during circulation.
  • the refrigerant pipe 31 is wound around the outer peripheral surface 11A of the motor main body 100 at a predetermined interval, so that the fluid F existing in the gap 29 of the first embodiment, for example, is adjacent to the refrigerant pipe 31. It can flow radially outward with respect to the outer peripheral surface 11 ⁇ / b> A of the motor body 100 through a flow path (gap) 39 formed between them. Thereby, the fluid F can ensure the heat-transfer path
  • the motor main body 100 can be directly cooled by the fluid F without becoming high temperature, and the motor main body 100 can be efficiently cooled.
  • FIG. 4 schematically shows the piping of the refrigerant pipe in the motor of the second embodiment.
  • the refrigerant pipes 31 are wound around the refrigerant pipes 31 that are adjacent to each other outside the motor case 11 of the motor main body 100 at intervals.
  • a fluid outlet 332 for circulating the fluid F to the circulation path 331 is provided above the housing 36, and the fluid F circulated from the circulation path 331 is disposed below the housing 36.
  • the housing 36 is provided with a fluid inlet 36B and a fluid outlet 36C for injecting the fluid F.
  • the fluid outlet 332 and the fluid inlet 333 can also be used as a fluid inlet or a fluid outlet for injecting the fluid F into the housing 36.
  • the refrigerant pipes 31 are arranged at intervals to increase the fluidity of the fluid F in the housing 36, and the circulation path 331 for circulating and cooling the fluid F is provided.
  • the fluid F that can become high temperature in the housing 36 can be efficiently cooled to improve the cooling efficiency of the cooling device 300.
  • the heat dissipated when the rotor 1 rotates is mainly above the motor main body 100 ( The fluid F that has been radiated upward (in the vertical direction) and has reached a high temperature in the housing 36 also flows upward in the vertical direction.
  • the fluid F in the vertically upper part is relatively high in temperature with respect to the fluid F in the vertically lower part. Therefore, as shown in the figure, by providing a fluid outlet 332 to the circulation path 331 vertically above, the fluid F that can become high temperature in the housing 36 can be efficiently sent to the radiator 330 for cooling. .
  • the fluid F cooled by the radiator 330 can be returned to the housing 36 through the fluid inlet 333 provided vertically below the housing 36 to achieve efficient circulation.
  • the operating efficiency of 300 can be further increased.
  • the fluid outlet 332 of the circulation path 331 is arranged on the vertical upper side of the housing 36, and the fluid inlet 33 is set vertically. It is preferable to provide the lower side.
  • the compressor 30A and the refrigerant pump 30C of the refrigeration device 30 are stopped and only the fluid pump 330A is used. Can be driven. That is, the heat released from the motor main body 100 is absorbed by the fluid F in the flow path 39 in the housing 36, the fluid F is sent to the circulation path 331, and heat is exchanged by the radiator 330 to dissipate heat to the outside air.
  • the cooling of the motor main body 100 can be suppressed without cooling the motor main body 100 with the refrigerant R, so that the cooling device 300 can be operated efficiently.
  • Example 3 5 and 6 show a third embodiment of the cooling device according to the present invention, which shows a state applied to a motor.
  • the motor main body used in this Example 3 is the same as that of the motor main body 100 used in Example 1, the same code
  • the heat radiated when the rotor 1 rotates is mainly the motor.
  • Heat is dissipated upward (vertically upward) of the main body 100, and the fluid F that has reached a high temperature in the housing 46 also flows vertically upward.
  • the fluid F in the vertically upward direction particularly flows vertically downward. The temperature becomes relatively high with respect to the body F.
  • the refrigerant pipes 41 are concentrated on the upper side of the motor body 100 in the vertical direction.
  • the heat dissipated from the motor main body 100 can be efficiently transmitted to the refrigerant R in the refrigerant pipe 41, and the fluid F on the vertically upper side can be efficiently cooled by the refrigerant R. Therefore, the cooling device 400 can be reduced in size and weight while maintaining the cooling performance of the cooling device 400, and thus the motor 3000 can be reduced in size and weight.
  • FIG. 6 schematically shows the piping of the refrigerant pipe 41 of the motor 3000 shown in FIG.
  • the refrigerant pipe 41 is mainly disposed so as to be substantially parallel to the rotation axis L of the rotor 1 and meanders (zigzag) outside the motor case 11 in the circumferential direction. Are arranged in a plane shape as a whole.
  • the refrigerant supply unit 43 and the refrigerant discharge unit 42 can be provided at different positions on the outer peripheral surface 11A of the motor main body 100, and either the same direction in the rotation axis L direction of the motor main body 100 or the opposite direction. It can also be provided in the direction.
  • the refrigerant supply section 43 and the refrigerant discharge section 42 are provided in the same direction in the direction of the rotation axis L of the motor main body 100, so that the refrigerant pipe 41 is mounted in the state where the housing 46 is attached to the motor main body 100.
  • the cap 46B and the like can be pulled out (in the direction of arrow C) from the outer peripheral surface 11A of the motor main body 100 and removed.
  • the refrigerant pipe 41 can be separated without disassembling the motor main body 100 and the housing 46, and the assemblability and maintainability of the cooling device 400 can be further improved.
  • the cross-sectional shape of the refrigerant pipe 41 can be the same cross-sectional shape as in the first and second embodiments, that is, a cross-sectional shape that can come into surface contact with the outer peripheral surface of the motor case 11.
  • FIG. 7 schematically shows another embodiment of the refrigerant pipe piping in the motor of the third embodiment.
  • the refrigerant pipe 41 is mainly disposed so as to be perpendicular to the rotation axis L of the motor body 100, and is disposed so as to meander the outside of the motor case 11 in the direction of the rotation axis L.
  • the refrigerant supply unit 43 and the refrigerant discharge unit 42 can be provided in the same position on the outer peripheral surface 11 ⁇ / b> A of the motor case 11 in the direction opposite to the rotation axis L of the motor body 100.
  • the refrigerant R absorbs heat radiated from the motor main body 100 and heat of the fluid F, and enters the refrigeration equipment 40 via the refrigerant hose 44 attached to the housing 46. Then, it is cooled by the compressor 40A, the heat exchanger 40B, etc. of the refrigeration equipment 40, and is again pumped to the refrigerant pipe 41 via the refrigerant hose 45 by the refrigerant pump 40C.
  • the refrigerant pipe 41 and the refrigerant hoses 44 and 45 are connected via a housing cap 46B, and the housing 46 is sealed by the housing cap 46B.
  • Example 3 a circulation path for circulating the fluid F, a fluid pump, a radiator for cooling the fluid F, and the like are not provided.
  • the circulation path 47 in a region defined by the outer peripheral surface 11A of the motor case 11 and the inner peripheral surface 46A of the housing 46, the heat is absorbed and the temperature becomes relatively high, and the specific gravity is reduced.
  • the body F flows vertically upward, is cooled by the refrigerant R provided vertically above, and the fluid F having a higher specific gravity flows vertically downward. That is, the fluid F is circulated by the circulation passage 47 provided around the motor body 100 by natural convection utilizing the specific gravity difference of the fluid F in the housing 46 without using a circulation path or a pump. Can do.
  • the fluid pump or the like is not necessary, and further simplification of the configuration and size reduction of the physique can be achieved.
  • the refrigerant pipes 41 arranged on the outer peripheral surface 11A of the motor case 11 are spaced apart from each other as shown in FIG.
  • the flow path (gap) 49 for the fluid F is formed.
  • the refrigerant pipe 41 having a circular cross section shown in the figure can be configured in the same manner as in the first and second embodiments so that the refrigerant pipe 41 and the outer peripheral surface 11A of the motor main body 100 are brought into surface contact.
  • FIG. 8 is a fourth embodiment of the cooling device according to the present invention, and shows a state applied to an inverter, with a part cut away so that the inside of the inverter main body 150 and the cooling device 500 can be seen. It is a thing.
  • the inverter 4000 shown in the figure is generally composed of an approximately rectangular parallelepiped inverter main body 150 and a cooling device 500 for cooling the inverter main body 150.
  • the inverter main body 150 includes a substrate 112, an inverter case 111, and an electric element 101 made of a semiconductor element or a passive element.
  • the electric element 101 is placed on the substrate 112 and covered with the inverter case 111.
  • a cooling device 500 for cooling the inverter main body 150 is disposed on the outer peripheral side of the inverter main body 150 (on the upper surface 111A side of the inverter case 111).
  • the cooling device 500 includes a refrigerant pipe 51, a housing 56 made of a nonmetallic material for covering the outside of the refrigerant pipe 51, and a refrigeration apparatus 50 (which constitutes a refrigeration cycle for cooling and circulating the refrigerant R).
  • the compressor 50A, the heat exchanger 50B, and the refrigerant pump 50C) are generally configured.
  • the refrigerant pipe 51 is meandering (zigzag) so as to come into contact with the upper surface 111 ⁇ / b> A of the inverter case 111 and is arranged in a planar shape as a whole.
  • the refrigerant pipe 51 has the same configuration as the first embodiment in the contact portion 51A that contacts the upper surface 111A of the inverter case 111, and the upper surface 111A of the refrigerant pipe 51 and the inverter case 111. Are in surface contact.
  • the refrigerant pipe 51 in the housing 56 is disposed above the electric element 101 such as a transistor having a particularly large calorific value, so that the heat radiated from the electric element 101 can be efficiently transferred to the refrigerant R in the refrigerant pipe 51. Can be communicated to.
  • the refrigerant pipe 51 may be provided on the lower surface of the inverter main body 150 or may be provided so as to go around the inverter main body 150.
  • a refrigerant discharge part 52 and a refrigerant supply part 53 are provided at both ends of the refrigerant pipe 51 provided on the upper surface 111A of the inverter case 111, and the electric element 101 passes through the refrigerant pipe 51.
  • the refrigerant R that has absorbed the heat released from the refrigerant is sent to the refrigeration equipment 50 of the refrigeration cycle via the refrigerant discharge part 52 and the refrigerant hose 54 attached to the refrigerant discharge part 52.
  • the heat of the refrigerant R is released to the outside by the compressor 50A, the heat exchanger 50B, etc., and the refrigerant R cooled by the refrigerant R is again supplied to the refrigerant R through the refrigerant hose 55 and the refrigerant supply unit 53 by the refrigerant pump 50C. It is pumped to the pipe 51.
  • the cooling device 500 includes a region other than the refrigerant pipe 51 among regions defined by the inner peripheral surface 56A of the housing 56 and the upper surface 111A of the inverter case 111, that is, a contact portion 51A between the housing 56 and the refrigerant pipe 51.
  • the space between them is filled with the fluid F, and similarly to the second embodiment, a circulation path 551, an inverter 550, and a fluid pump 550A are provided.
  • the fluid F that has reached a high temperature in the housing 56 is sent to the circulation path 551 via the fluid outlet 552, and is heat-exchanged by the radiator 550 connected to the circulation path 551.
  • the cooled fluid F is pumped into the housing 56 via the fluid inlet 553 by the fluid pump 550A.
  • the adjacent refrigerant pipes 51 provided on the upper surface 111A of the inverter main body 150 are arranged at intervals from each other and flow from the inverter case 111. A heat transfer path for heat transferred to the body F is secured.
  • FIG. 9 is a fifth embodiment of the cooling device according to the present invention, and shows a state applied to a motor.
  • the motor main body used in the fifth embodiment has the same configuration as that of the motor main body 100 used in the first to fourth embodiments. Therefore, the same reference numerals are given and detailed description thereof is omitted.
  • the illustrated motor 5000 includes a circulation path 661 for circulating the fluid F in the housing 66, a fluid pump 660A, and a radiator 660 for cooling the fluid F.
  • the motor body 100 and the housing 66 of the cooling device 600 are integrally formed by an integral housing 69 in which a circulation path 67 is provided around the outer peripheral surface 11A of the motor case 11.
  • the housing 66 of the cooling device 600 and the circulation path 67 are connected by a connection path 72.
  • the fluid F that has flowed through the housing 66 and absorbed the heat released from the motor main body 100 is sent to the circulation path 67 by the connection path 72.
  • the fluid F flows around the motor body 100 along the circulation path 67 while further absorbing heat released from the motor body 100, and is provided in the circulation path 661 via the fluid outlet 662.
  • the heat is transferred to the pump 660A, the heat is radiated to the outside air by the radiator 660, and the cooled fluid F is sent to the heat exchanger 70 via the fluid inlet 663. To be pumped.
  • the heat exchanger 70 is provided in the housing 66 of the cooling device 600 through which the fluid F flows. That is, when flowing through the circulation path 67 provided on the outer peripheral surface 11 ⁇ / b> A of the motor main body 100, the fluid F that is heated to the heat dissipated from the motor main body 100 and sent to the heat exchanger 70 via the radiator 660 is Further, the heat exchanger 70 further cools by the refrigeration equipment 60 of the refrigeration cycle. That is, heat exchange is performed between the refrigerant R in the refrigerant pipe 61A supplied to the heat exchanger 70 via the refrigerant supply unit 63A and the fluid F flowing through the circulation path 661, and the fluid F further To be cooled.
  • the refrigerant R that has absorbed the heat of the fluid F is transferred to the refrigeration cycle cooling device 60 (the compressor 60A, the heat exchanger 60B, and the refrigerant pump 60C) connected to the refrigerant hose 64A via the refrigerant discharge portion 62A. Then, the pressure is again sent to the refrigerant pipe 61 in the housing 66 through the refrigerant hose 65 and the refrigerant supply unit 63.
  • the refrigerant R that has absorbed the heat of the motor main body 100 with the refrigerant pipe 61 arranged in, for example, a zigzag shape in the housing 66 is sent to the refrigerant hose 64 via the refrigerant discharge part 62 and supplied with the refrigerant hose 65A. It is sent to the heat exchanger 70 via the part 63A.
  • the fluid F cooled by the refrigerant R in the refrigerant pipe 61A is sent into the housing 66 through the connection path 71 and is radiated from the motor main body 100 while flowing in the housing 66 as described above.
  • the heat is absorbed and supplied again to the circulation path 67 disposed around the motor main body 100 by the connection path 72, and the motor main body 100 is cooled.
  • the fluid F in the housing 66 is circulated using the circulation path 661 and the like, and the fluid F used for cooling the motor main body 100 by the heat exchanger 70 and the refrigerant R in the refrigerant pipe 61A Since the fluid F flowing in the housing 66 of the cooling device 600 can be cooled more efficiently and the flow rate of the flowing fluid F can be further suppressed, the entire fluid F can be reduced. Thus, the fluid F can be cooled with good responsiveness.
  • FIG. 10 shows an arrangement in which an inverter is interposed between the motor and the cooling device shown in FIG. 9, and the cooling device is applied to an inverter main body 150 and a motor main body 100 that are integrated.
  • the illustrated inverter main body 150 is the same as the inverter main body 150 used in the fourth embodiment, and thus the same reference numerals are given and detailed description thereof is omitted.
  • the motor main body 100 and the inverter 150 are integrated with each other by an integral housing 69 of the motor main body 100, and a cooling device 600A is attached to the upper side.
  • the inverter main body 150 between the motor main body 100 and the cooling device 600A, the heat dissipated from the inverter main body 150 by the cooling device 600A can be absorbed, and the motor main body 100 and the inverter main body can be absorbed. Both 150 can be cooled. Moreover, compared with the case where the motor main body 100 and the inverter main body 150 are separately disposed and cooled by the cooling device, the length of the piping of the fluid F flowing through the entire motor 5000A can be suppressed, and the entire motor 5000A can be reduced. Smaller and lighter can be achieved.
  • the heat capacity of the fluid F is reduced by reducing the overall flow rate of the fluid F, thereby cooling the fluid F with high responsiveness.
  • the cooling efficiency of the cooling device 600A can be increased.
  • the inverter main body 150 may be attached to the opposite side of the motor main body 100 to which the cooling device is attached, or the cooling device may be interposed between the motor main body 100 and the inverter main body 150.
  • FIG. 11 shows another embodiment of the piping of the refrigerant pipe shown in FIG.
  • the inside of the housing 66 of the cooling device 600B is filled with only the fluid F, the fluid F is circulated through the circulation paths 67 and 661, and cooled by heat exchange in the radiator 660, so that the motor The main body 100 and the inverter main body 150 can also be cooled.
  • the heat exchanger 70 is provided in the motor 5000B, and the heat radiated from the motor main body 100 and the inverter main body 150 and absorbed by the fluid F flows into the refrigerant pipe 61A in the heat exchanger 70. It is transmitted to R and radiated to the outside of the motor 5000B.
  • the cooling performance of the cooling device is improved while using a refrigerant pipe having a sealed structure in which high-pressure refrigerant is difficult to leak.
  • the heat radiated from the body can be efficiently radiated to the outside.
  • the to-be-cooled body can be efficiently operated while suppressing the temperature rise of the to-be-cooled body.
  • by optimizing the arrangement of the refrigerant pipes it is possible to reduce the size and weight of the cooling device, and it is possible to reduce the overall size of the cooling device even when it is attached to an electric device or the like.
  • the cooling device detachable from the electric device without disassembling the electric device such as a motor, inverter, battery, etc., it is possible to improve the assemblability and maintainability of the electric device that is the cooling device and the cooled object. it can.
  • the present invention is not limited to the first to fifth embodiments described above, and includes various modifications.
  • the first to fifth embodiments described above are described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
  • a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
  • control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. In practice, it may be considered that almost all the components are connected to each other.

Abstract

L'invention concerne un équipement de refroidissement capable de transférer efficacement la chaleur d'un corps à refroidir, par exemple un équipement électrique, à un frigorigène à l'intérieur de tuyaux frigorigènes, et capable d'empêcher efficacement la chaleur dans l'air enveloppant l'équipement de refroidissement d'être absorbé par le frigorigène, ce qui assure une plus grande efficacité du refroidissement. L'invention concerne également un moteur et un inverseur équipés de l'équipement de refroidissement. L'équipement de refroidissement (200) est équipé de tuyaux frigorigènes (21) qui refroidissent le moteur (100) au moyen du frigorigène (R). Les tuyaux frigorigènes (21) sont de longs tuyaux dont la forme est dans l'ensemble plate. Un côté de la forme plate est recouvert d'un boîtier (26), l'autre côté servant de section de contact venant au contact du moteur (100). L'espace entre le boîtier (26) et la section de contact est rempli d'un matériau (F) dont la conductivité est supérieure à l'air.
PCT/JP2011/053651 2011-02-21 2011-02-21 Equipement de refroidissement, et moteur et inverseur équipés de l'équipement de refroidissement WO2012114420A1 (fr)

Priority Applications (2)

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JP2013500720A JP5676737B2 (ja) 2011-02-21 2011-02-21 冷却装置、及び、該冷却装置を備えたモータとインバータ
PCT/JP2011/053651 WO2012114420A1 (fr) 2011-02-21 2011-02-21 Equipement de refroidissement, et moteur et inverseur équipés de l'équipement de refroidissement

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PCT/JP2011/053651 WO2012114420A1 (fr) 2011-02-21 2011-02-21 Equipement de refroidissement, et moteur et inverseur équipés de l'équipement de refroidissement

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JP2015180151A (ja) * 2014-03-19 2015-10-08 中国電力株式会社 閉鎖循環冷媒の冷却装置
KR20160028711A (ko) * 2014-09-04 2016-03-14 한온시스템 주식회사 전동 압축기
JP2017011946A (ja) * 2015-06-25 2017-01-12 株式会社日立製作所 回転電機、並びに回転電機の冷却システム
WO2019098224A1 (fr) * 2017-11-17 2019-05-23 三菱自動車工業株式会社 Dispositif de refroidissement pour machine électrique rotative
CN115603517A (zh) * 2022-10-17 2023-01-13 浙江威本工贸有限公司（Cn） 一种环保高效节能汽车发电机

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CN111614209A (zh) * 2020-07-10 2020-09-01 合肥巨一动力系统有限公司 一种应用于电驱系统中的自动调温散热水道

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JPH07288949A (ja) * 1994-04-13 1995-10-31 Nippondenso Co Ltd 車両駆動用電動機
JPH07322640A (ja) * 1994-05-27 1995-12-08 Nippondenso Co Ltd インバータ
JPH08251872A (ja) * 1995-03-10 1996-09-27 Yaskawa Electric Corp モータの冷却装置
JP2001169501A (ja) * 1999-11-11 2001-06-22 Hilti Ag 電気モータ

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JPH04364379A (ja) * 1991-06-10 1992-12-16 Mitsubishi Electric Corp インバータ装置
JPH07288949A (ja) * 1994-04-13 1995-10-31 Nippondenso Co Ltd 車両駆動用電動機
JPH07322640A (ja) * 1994-05-27 1995-12-08 Nippondenso Co Ltd インバータ
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015180151A (ja) * 2014-03-19 2015-10-08 中国電力株式会社 閉鎖循環冷媒の冷却装置
KR20160028711A (ko) * 2014-09-04 2016-03-14 한온시스템 주식회사 전동 압축기
KR102130404B1 (ko) * 2014-09-04 2020-07-07 한온시스템 주식회사 전동 압축기
JP2017011946A (ja) * 2015-06-25 2017-01-12 株式会社日立製作所 回転電機、並びに回転電機の冷却システム
WO2019098224A1 (fr) * 2017-11-17 2019-05-23 三菱自動車工業株式会社 Dispositif de refroidissement pour machine électrique rotative
CN115603517A (zh) * 2022-10-17 2023-01-13 浙江威本工贸有限公司（Cn） 一种环保高效节能汽车发电机
CN115603517B (zh) * 2022-10-17 2023-06-02 浙江威本工贸有限公司 一种环保高效节能汽车发电机

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