JP2005002827A - Refrigerant pump and cooling device - Google Patents
Refrigerant pump and cooling device Download PDFInfo
- Publication number
- JP2005002827A JP2005002827A JP2003164986A JP2003164986A JP2005002827A JP 2005002827 A JP2005002827 A JP 2005002827A JP 2003164986 A JP2003164986 A JP 2003164986A JP 2003164986 A JP2003164986 A JP 2003164986A JP 2005002827 A JP2005002827 A JP 2005002827A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- rotor
- refrigerant
- refrigerant pump
- electric motor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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Classifications
-
- 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
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/0085—Prime movers
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
Abstract
Description
【0001】
【発明の属する技術分野】
本発明は、高発熱の半導体素子等の冷却を冷媒の蒸発、凝縮の相変化を用いて効率よく行なう冷却装置およびこの装置に用いるオイルレスの冷媒ポンプに関するものである。
【0002】
【従来の技術】
従来の冷媒ポンプとしては、固定子と回転子の位置が同じであった。図3は前記特許文献1に記載された従来の縦断面図を示すものである。図3において固定子31の位置は回転子32と同じ位置の構成になっていた(例えば、特許文献1参照)。
【0003】
また、従来の冷媒ポンプとしては軸受の内側にブッシュを挿入したタイプがあった。図4は前記特許文献2に記載された従来の縦断面図を示すものである。図4において軸受41の内側に高価なブッシュ42が挿入された構成になっていた(例えば、特許文献2参照)。
【0004】
【特許文献1】
特公平7−47957号公報(第4頁、図1)
【特許文献2】
特開平3−233188号公報(第2頁、図1)
【0005】
【発明が解決しようとする課題】
以上のような従来の冷媒ポンプにおいては、固定子の位置と回転子の位置が同じであるため、スラスト力を駆動軸偏芯部の下で受けるのか、上で受けるのか決まらないため上下両面の研磨加工が必要であった。また、一方向に押されていないため駆動軸がふらつき騒音を発生する課題があった。
【0006】
また、従来の冷媒ポンプにおいては、軸受の内側に高価なブッシュを挿入しているためコストアップの要因になる課題があった。また、軸受部に潤滑オイルを使用した場合、このオイルが冷却システム内に流通し、特に冷却板において内部表面にオイルが付着し、熱伝達を悪くしていた。
【0007】
【課題を解決するための手段】
この課題を解決するために本発明は、密閉容器の外側に取付けた電動機部の固定子と、前記密閉容器の内側に設けた電動機部の回転子と、前記回転子の回転力をポンプ機構部に伝達する駆動軸を設け、前記固定子の位置を前記回転子よりも前記ポンプ機構部側に設置したものである。
また、密閉容器の外側に取付けた電動機部の固定子と、前記密閉容器の内側に設けた電動機部の回転子と、前記回転子の回転力をポンプ機構部に伝達する駆動軸を設け、前記駆動軸あるいはその軸受け、若しくはその両方の表面に
浸炭処理または窒化処理を用いたものである。
【0008】
この構成をなすことにより、駆動軸をポンプ機構部に押すスラスト力を得、駆動軸段付き部下端で安定して接触し、信頼性の高い冷媒ポンプを構成することができる。
【0009】
また、駆動軸の表面を浸炭処理あるいは窒化処理を行っているため信頼性の高い安価な軸受構造を得ることができ、冷媒ポンプ内をオイルレスで構成でき、高性能の冷却装置を構成することができる。
【0010】
【発明の実施の形態】
以下本発明の実施の形態について図面を参照しながら説明する。
【0011】
(実施の形態1)
図1は本発明の実施の形態1における冷媒ポンプの断面図である。
【0012】
密閉容器1の外側には電動機部の固定子2が取り付けられており内側には電動機部の回転子4が配置されている。前記電動機部の固定子2の中心2aは前記電動機部の回転子4の中心4aよりもポンプ機構部5側に距離Lだけ近づいて設置されている。
【0013】
回転子4の回転力は駆動軸3によりポンプ機構部5に伝えられる。また、ポンプ機構部5は密閉容器1に固定されており前記駆動軸3、シリンダー軸受け部7、ポンプ部品8および吸入板6で構成されている。また、シリンダー軸受け7は前記駆動軸3の軸受けとポンプ室を形成するシリンダーとを兼ねている。また、駆動軸3の表面には浸炭処理または窒化処理を行っており冷媒ポンプ内はオイルレスで構成されている。
【0014】
図2は、本発明の実施の形態1における本発明のオイルレスの冷媒ポンプを用いた半導体冷却装置の冷凍サイクル図である。図2において高発熱体である半導体素子を冷却するための冷却板21とコンデンサー22、オイルレスの冷媒ポンプ23を繋いで冷凍サイクルを構成している。またコンデンサー22はファン24でもって冷却される構成になっており、冷凍サイクル内には冷媒が封入されている。冷媒の流れはまずコンデンサー22より出てきた液冷媒をオイルレスの冷媒ポンプ23でもって冷却板21に送られ、高発熱の半導体素子の熱を奪い冷却板21の中で液冷媒から蒸気冷媒に相変化を起こす。次に蒸気冷媒はコンデンサー22に送られ、ファン24でもって冷却され蒸気冷媒から液冷媒に相変化を起こす。
【0015】
かかる構成によれば電動機部の固定子2の中心2aが回転子4の中心4aよりもポンプ機構部に近い位置に設置されているため、電動機部に通電されると回転子4を図の右側に押すスラスト力が発生し、前記回転子4に固定されている駆動軸3が図の右側に押され駆動軸段付き部端面3aが吸入板6と常に安定した接触をした状態となり、一方で、面3bは接触圧力が極めて小さいかあるいは接触しないので、駆動軸端面3aの研磨加工のみで足り、安価な駆動軸が得られる。また、駆動軸のふらつきによって発生する騒音も低減する効果が得られる。
【0016】
また、上記の構成並びに駆動軸表面を浸炭処理または窒化処理を施した構成の、冷媒ポンプ内をオイルレスで構成でき、冷凍サイクル内にオイルが混合し、冷媒と被冷却物(この場合は冷却板)の間の熱伝達率が低下することにより生ずる、冷却性能の低下を低減できる効果が得られる。
【0017】
【発明の効果】
以上のように、本発明は、密閉容器の外側に取付けた電動機部の固定子と、前記密閉容器の内側に設けた電動機部の回転子と、前記回転子の回転力をポンプ機構部に伝達する駆動軸を設け、前記固定子の位置を前記回転子よりも前記ポンプ機構部側に設置したものである。
【0018】
また本発明は、ポンプ機構部のポンプ部品の端面を挟んで囲う2面の内、電動機部に面した面の表面仕上げ精度が他の面の表面仕上げの精度よりも高くしたものである。
【0019】
また本発明は、表面仕上げに浸炭処理または窒化処理を用いたものである。
【0020】
また本発明は、密閉容器の外側に取付けた電動機部の固定子と、前記密閉容器の内側に設けた電動機部の回転子と、前記回転子の回転力をポンプ機構部に伝達する駆動軸を設け、前記駆動軸あるいはその軸受け、若しくはその両方の表面に浸炭処理または窒化処理を用いたものである。
【0021】
さらに本発明は、上記のいずれかに記載の冷媒ポンプを用い、且つ潤滑オイルを用いない冷媒循環式の冷却装置を構成したものである。
【0022】
上記の構成をなすことにより、スラスト力を駆動軸の一端で受けることが出来、片面の研磨加工で足り、安価な軸受を得ることができる。
【0023】
また、オイルレスで冷媒ポンプを構成することが出来、軸受部にオイルを使用した場合に冷凍サイクル内に流通するオイルによる熱伝達の低下を無くすることができ、高性能の冷却装置を得ることが出来る。
【図面の簡単な説明】
【図1】本発明の実施の形態1における冷媒ポンプの断面図
【図2】本発明の実施の形態1における冷凍サイクル図
【図3】従来の冷媒ポンプの断面図
【図4】従来の冷媒ポンプの断面図
【符号の説明】
1 密閉容器
2 電動機部の固定子
3 駆動軸
4 電動機部の回転子
5 ポンプ機構部
6 吸入板
7 シリンダー軸受
8 ポンプ部品
21 冷却板
22 コンデンサー
23 オイルレスの冷媒ポンプ
24 ファン[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooling device that efficiently cools a semiconductor element or the like with high heat generation by using a phase change of evaporation and condensation of a refrigerant, and an oilless refrigerant pump used in this device.
[0002]
[Prior art]
As a conventional refrigerant pump, the positions of the stator and the rotor are the same. FIG. 3 shows a conventional longitudinal sectional view described in Patent Document 1. In FIG. In FIG. 3, the position of the
[0003]
Further, as a conventional refrigerant pump, there is a type in which a bush is inserted inside a bearing. FIG. 4 shows a conventional longitudinal sectional view described in Patent Document 2. In FIG. In FIG. 4, an
[0004]
[Patent Document 1]
Japanese Examined Patent Publication No. 7-47957 (page 4, FIG. 1)
[Patent Document 2]
JP-A-3-233188 (2nd page, FIG. 1)
[0005]
[Problems to be solved by the invention]
In the conventional refrigerant pump as described above, since the position of the stator and the position of the rotor are the same, it is not determined whether the thrust force is received under the drive shaft eccentric part or the upper part. Polishing was necessary. In addition, since the drive shaft is not pushed in one direction, there is a problem that the drive shaft fluctuates and generates noise.
[0006]
Moreover, in the conventional refrigerant pump, since an expensive bush is inserted inside the bearing, there is a problem that causes an increase in cost. In addition, when lubricating oil is used for the bearing portion, this oil circulates in the cooling system, and particularly, the oil adheres to the inner surface of the cooling plate, which deteriorates heat transfer.
[0007]
[Means for Solving the Problems]
In order to solve this problem, the present invention provides a stator of an electric motor unit attached to the outside of a sealed container, a rotor of an electric motor unit provided on the inner side of the sealed container, and a rotational force of the rotor to a pump mechanism unit. A drive shaft is provided for transmission, and the position of the stator is set closer to the pump mechanism part than the rotor.
Further, the stator of the electric motor part attached to the outside of the sealed container, the rotor of the electric motor part provided inside the sealed container, and a drive shaft for transmitting the rotational force of the rotor to the pump mechanism part, Carburizing treatment or nitriding treatment is used on the surface of the drive shaft or its bearing, or both.
[0008]
With this configuration, it is possible to obtain a thrust force that pushes the drive shaft against the pump mechanism and stably contacts the lower end of the step portion with the drive shaft, thereby forming a highly reliable refrigerant pump.
[0009]
Also, because the surface of the drive shaft is carburized or nitrided, a highly reliable and inexpensive bearing structure can be obtained, the inside of the refrigerant pump can be configured without oil, and a high-performance cooling device can be configured. Can do.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
(Embodiment 1)
FIG. 1 is a cross-sectional view of a refrigerant pump according to Embodiment 1 of the present invention.
[0012]
The stator 2 of the electric motor part is attached to the outside of the hermetic container 1, and the rotor 4 of the electric motor part is arranged on the inner side. The center 2a of the stator 2 of the motor unit is installed closer to the
[0013]
The rotational force of the rotor 4 is transmitted to the
[0014]
FIG. 2 is a refrigeration cycle diagram of the semiconductor cooling device using the oilless refrigerant pump of the present invention in the first embodiment of the present invention. In FIG. 2, a refrigeration cycle is configured by connecting a
[0015]
According to such a configuration, since the center 2a of the stator 2 of the motor unit is installed at a position closer to the pump mechanism unit than the center 4a of the rotor 4, when the motor unit is energized, the rotor 4 is connected to the right side of the figure. The
[0016]
In addition, the inside of the refrigerant pump having the above-described configuration and the configuration in which the surface of the drive shaft is carburized or nitrided can be configured oilless, and the oil is mixed in the refrigeration cycle, and the refrigerant and the object to be cooled (in this case, the cooling target) The effect of reducing the decrease in cooling performance caused by the decrease in the heat transfer coefficient between the plates) can be obtained.
[0017]
【The invention's effect】
As described above, according to the present invention, the stator of the motor unit attached to the outside of the sealed container, the rotor of the motor unit provided inside the sealed container, and the rotational force of the rotor are transmitted to the pump mechanism unit. And a position of the stator is set closer to the pump mechanism than the rotor.
[0018]
In the present invention, the surface finishing accuracy of the surface facing the electric motor portion out of the two surfaces sandwiching the end surface of the pump part of the pump mechanism portion is higher than the surface finishing accuracy of the other surfaces.
[0019]
In the present invention, carburizing treatment or nitriding treatment is used for surface finishing.
[0020]
According to another aspect of the present invention, there is provided a stator of an electric motor unit attached to the outside of the hermetic container, a rotor of an electric motor unit provided on the inner side of the hermetic container, and a drive shaft that transmits the rotational force of the rotor to the pump mechanism unit. And carburizing treatment or nitriding treatment is used on the surface of the drive shaft or its bearing, or both.
[0021]
Furthermore, this invention comprises the refrigerant | coolant circulation type cooling device which uses the refrigerant pump in any one of the above, and does not use lubricating oil.
[0022]
With the above configuration, a thrust force can be received at one end of the drive shaft, and polishing on one side is sufficient, and an inexpensive bearing can be obtained.
[0023]
In addition, an oil-less refrigerant pump can be configured, and when oil is used for the bearing, it is possible to eliminate a decrease in heat transfer due to the oil circulating in the refrigeration cycle, and to obtain a high-performance cooling device. I can do it.
[Brief description of the drawings]
1 is a cross-sectional view of a refrigerant pump according to a first embodiment of the present invention. FIG. 2 is a refrigeration cycle diagram according to a first embodiment of the present invention. FIG. 3 is a cross-sectional view of a conventional refrigerant pump. Cross section of pump 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Airtight container 2 Stator of
Claims (5)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003164986A JP4168844B2 (en) | 2003-06-10 | 2003-06-10 | Refrigerant pump and cooling device |
TW093108867A TW200506204A (en) | 2003-06-10 | 2004-03-31 | Refrigerant pump and cooling device employing same |
US10/814,712 US20040253127A1 (en) | 2003-06-10 | 2004-03-31 | Refrigerant pump and cooling device employing same |
CN200410033559.0A CN1573117A (en) | 2003-06-10 | 2004-04-06 | Refrigerant pump and cooling device employing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003164986A JP4168844B2 (en) | 2003-06-10 | 2003-06-10 | Refrigerant pump and cooling device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005002827A true JP2005002827A (en) | 2005-01-06 |
JP4168844B2 JP4168844B2 (en) | 2008-10-22 |
Family
ID=33508828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003164986A Expired - Fee Related JP4168844B2 (en) | 2003-06-10 | 2003-06-10 | Refrigerant pump and cooling device |
Country Status (4)
Country | Link |
---|---|
US (1) | US20040253127A1 (en) |
JP (1) | JP4168844B2 (en) |
CN (1) | CN1573117A (en) |
TW (1) | TW200506204A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101315080B (en) * | 2008-05-13 | 2011-09-07 | 深圳市雅尔典科技有限公司 | Full sealing type refrigerant fluid pump and its application in high-rise storied house refrigerating system |
US8513839B1 (en) * | 2009-05-05 | 2013-08-20 | John L Larson | Fan with damper |
US7800262B1 (en) * | 2009-05-05 | 2010-09-21 | John Leo Larson | Centrifugal drop fan and valve with sliding motor |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2832800B2 (en) * | 1993-10-22 | 1998-12-09 | 日立建機株式会社 | Plain bearing assembly |
JP2000011005A (en) * | 1998-06-17 | 2000-01-14 | Hitachi Ltd | Data analyzing method and its device and computer- readable recording medium recorded with data analytical program |
JP3614694B2 (en) * | 1999-01-22 | 2005-01-26 | 松下電器産業株式会社 | Method and apparatus for applying pressure to both-end bearing structure of direct drive shaft of motor and hermetic compressor using them |
US20040215522A1 (en) * | 2001-12-26 | 2004-10-28 | Eder Jeff Scott | Process optimization system |
JP2003314469A (en) * | 2002-04-24 | 2003-11-06 | Matsushita Electric Ind Co Ltd | Refrigerant pump |
US7426559B2 (en) * | 2002-05-09 | 2008-09-16 | International Business Machines Corporation | Method for sequential coordination of external database application events with asynchronous internal database events |
US7490085B2 (en) * | 2002-12-18 | 2009-02-10 | Ge Medical Systems Global Technology Company, Llc | Computer-assisted data processing system and method incorporating automated learning |
US20040128204A1 (en) * | 2002-12-27 | 2004-07-01 | Cihla Virgil F. | Systems for procuring products in a distributed system |
US20040164961A1 (en) * | 2003-02-21 | 2004-08-26 | Debasis Bal | Method, system and computer product for continuously monitoring data sources for an event of interest |
-
2003
- 2003-06-10 JP JP2003164986A patent/JP4168844B2/en not_active Expired - Fee Related
-
2004
- 2004-03-31 US US10/814,712 patent/US20040253127A1/en not_active Abandoned
- 2004-03-31 TW TW093108867A patent/TW200506204A/en unknown
- 2004-04-06 CN CN200410033559.0A patent/CN1573117A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP4168844B2 (en) | 2008-10-22 |
US20040253127A1 (en) | 2004-12-16 |
CN1573117A (en) | 2005-02-02 |
TW200506204A (en) | 2005-02-16 |
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