JPH0441154A - Cooling device for built-in motor - Google Patents
Cooling device for built-in motorInfo
- Publication number
- JPH0441154A JPH0441154A JP14970190A JP14970190A JPH0441154A JP H0441154 A JPH0441154 A JP H0441154A JP 14970190 A JP14970190 A JP 14970190A JP 14970190 A JP14970190 A JP 14970190A JP H0441154 A JPH0441154 A JP H0441154A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- main shaft
- refrigerant
- temperature
- cooling
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 43
- 239000003507 refrigerant Substances 0.000 claims abstract description 39
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000009834 vaporization Methods 0.000 abstract 2
- 230000008016 vaporization Effects 0.000 abstract 2
- 239000006200 vaporizer Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 230000037431 insertion Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、旋盤等の工作機械の駆動源として用いるビル
トインモータの冷却装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cooling device for a built-in motor used as a drive source for a machine tool such as a lathe.
(従来の技術)
一般にこの種のビルトインモータは、第4図に概略的に
示すごとく、ハウジング(A)の胴部(B)内に、ステ
ータ(C)及びロータ(D)をもつモータ(E)と、該
モータ(E)で駆動される主軸(F)及び該主軸(F)
を支持する軸受(Gl)(G2)を内装し、前記主軸(
F)の少なくとも軸方向一端側を、前記ハウジング(A
)の側壁(H)から突出させ、該突出端部にキャックな
どを組付けるようにしている。(Prior Art) Generally, this type of built-in motor is a motor (E) having a stator (C) and a rotor (D) in a body (B) of a housing (A), as schematically shown in FIG. ), a main shaft (F) driven by the motor (E), and the main shaft (F)
Bearings (Gl) (G2) that support the main shaft (
At least one end in the axial direction of the housing (A
) is made to protrude from the side wall (H), and a cap or the like is assembled to the protruding end.
また以上のビルトインモータの冷却装置とし5ては、同
じく第4図に示すごとく、前記ハウジング(A)の外周
に外筒(I)を配置して、該外筒(I)と前記ハウジン
グ(A)との間に前記モータ(E)の冷却部(J)を設
けて、該冷却部(J)を冷却装置の蒸発器として用い、
該冷却部(J)での冷媒の蒸発作用により前記モータ(
E)を冷却して、発熱による前記主軸(F)の熱膨張を
抑制し、加工精度の向上を図っており、また出願人にあ
っても既に同様の構造の冷却装置を実施例として出願し
ている。(特願平2−103738号)
(発明が解決しようとする課題)
ところで、前記ビルトインモータにあっては、駆動時、
特に前記ステータ(C)とロータ(D)との間が発熱し
易いのであるが、前記した冷却装置にあっては、前記ハ
ウジング(A)の外周に、該ハウジング(A)とは別途
形成した外筒(I)を組付けて、この外筒(I)と前記
ハウジング(A)との間に冷却部(J)を形成している
ため、それだけ部品点数及び組付手間が増大するのは勿
論のこと、前記ハウジング(A)の外方から該ハウジン
グ(A)を介して前記モータ(E)及び主軸(F)の冷
却が行われるので、本来制御すべき主軸(F)の温度と
冷却部(J)での蒸発温度との間に温度差が生じ、その
ため前記主軸(F)を外気温度(室温)に正確に制御出
来ないし、また前記ハウジング(A)を介して冷却する
ものであるから冷却効率が悪く、従って前記モータ(E
)の発熱部位を確実に冷却しようとすれば、蒸発温度を
低下させて冷却性能を高めねばならず、反面、斯くのご
とく冷媒の蒸発温度を低下させるとなると、前記外筒(
I)の外壁面等に露が発生する問題もある。Further, as the cooling device 5 for the above built-in motor, as shown in FIG. ), a cooling part (J) of the motor (E) is provided between the motor (E), and the cooling part (J) is used as an evaporator of the cooling device;
The motor (
E) to suppress thermal expansion of the spindle (F) due to heat generation, thereby improving machining accuracy, and the applicant has already filed an application for a cooling device with a similar structure as an example. ing. (Patent Application No. 2-103738) (Problem to be Solved by the Invention) By the way, in the built-in motor, when driving,
In particular, heat is likely to be generated between the stator (C) and the rotor (D), but in the cooling device described above, a Since the outer cylinder (I) is assembled and the cooling part (J) is formed between this outer cylinder (I) and the housing (A), the number of parts and assembly time increase accordingly. Of course, since the motor (E) and the main shaft (F) are cooled from the outside of the housing (A) through the housing (A), the temperature and cooling of the main shaft (F), which should originally be controlled, is There is a temperature difference between the evaporation temperature at section (J) and the main shaft (F) cannot be accurately controlled to the outside temperature (room temperature), and it is also cooled through the housing (A). Therefore, the cooling efficiency of the motor (E
In order to reliably cool the heat generating part of the outer cylinder ( ), it is necessary to lower the evaporation temperature to improve the cooling performance.
There is also the problem of dew forming on the outer wall surface of I).
本発明は以上の実情に鑑みて開発したものであって、目
的とするところは、主軸温度と冷却部の蒸発温度との差
を小さく出来、結霧等の発生を抑制しながら前記ビルト
インモータの発熱部位を効率よく冷却出来るビルトイン
モータの冷却装置を提供することにある。The present invention was developed in view of the above-mentioned circumstances, and aims to reduce the difference between the main shaft temperature and the evaporation temperature of the cooling section, suppress the generation of fog, etc., and improve the temperature of the built-in motor. An object of the present invention is to provide a cooling device for a built-in motor that can efficiently cool a heat generating part.
(課題を解決するための手段)
本発明は前記目的を達成するため、ハウジング(1)の
胴部(11)内に、ステータ(21)及ヒロータ(22
)をもつモータ(2)と、該モータ(2)で駆動される
主軸(3)及び該主軸(3)を支持する軸受(31)(
32)を内装し、前記主軸(3)の少なくとも軸方向一
端側を、前記ハウジング(1)の側壁(13)から突出
させたビルトインモータの冷却装置であって、前記胴部
(11)における前記モータ(2)の軸方向一側と他側
とに、前記ステータ(21)とロータ(22)とのエア
ギャップ(23)を介して連通ずる冷媒入口室(4a)
と冷媒出口室(4b)とを設けて、前記胴部(11)内
に、冷凍機の蒸発器として前記モータ(2)を冷却する
冷却部(4〕を形成したのである。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a stator (21) and a hero (22) in the body (11) of the housing (1).
), a main shaft (3) driven by the motor (2), and a bearing (31) supporting the main shaft (3).
32) internally, and at least one axial end side of the main shaft (3) protrudes from the side wall (13) of the housing (1), the cooling device comprising: A refrigerant inlet chamber (4a) communicating with one axial side and the other side of the motor (2) via an air gap (23) between the stator (21) and the rotor (22).
and a refrigerant outlet chamber (4b), and a cooling section (4) for cooling the motor (2) as an evaporator of the refrigerator is formed in the body (11).
(作 用 )
本発明によれば、モータ(2)を内装したハウジング(
1)の胴部(11)内が冷却部(4)として構成される
ので、前記モータ(2)のステータ(21)及びロータ
(22)と前記主軸(3)とが直接冷却されて、これら
各部材の冷却効率を高く出来ると共に、前記冷却部(4
)での冷媒の蒸発温度と主軸(3)の温度との差を小さ
く出来、従って前記ハウジング(1)の外面に結露が生
じるのを抑制出来ながら前記主軸(3)の温度を外気温
度に制御でき、前記主軸(3)の熱膨張差の低減を図る
ことが可能となるのである。(Function) According to the present invention, the housing (
Since the inside of the body (11) of the motor (1) is configured as a cooling section (4), the stator (21) and rotor (22) of the motor (2) and the main shaft (3) are directly cooled. In addition to increasing the cooling efficiency of each member, the cooling section (4
) can reduce the difference between the evaporation temperature of the refrigerant and the temperature of the main shaft (3), thereby controlling the temperature of the main shaft (3) to the outside temperature while suppressing dew condensation on the outer surface of the housing (1). This makes it possible to reduce the difference in thermal expansion of the main shaft (3).
(実 施 例 )
以下、本発明にかかるビルトインモータの冷却装置の実
施例を図面に従って説明する。(Example) Hereinafter, an example of a cooling device for a built-in motor according to the present invention will be described with reference to the drawings.
図において(M)は、ハウジング(1)にモータ(2)
を内装したビルトインモータであって、旋盤(図示せず
)のチャックの駆動源として用いるようにしている。In the figure (M) shows the motor (2) attached to the housing (1).
This is a built-in motor that is used as a drive source for the chuck of a lathe (not shown).
前記ハウジング(1)は円筒状の胴部(11)と、該胸
部(11)の一端開口を閉鎖して、後記する主軸(3)
の挿通孔(12)を備えた第1側壁(13)と、前記胴
部(11)の他端開口を閉鎖する第2側壁(14)とか
らなる。The housing (1) includes a cylindrical body (11) and a main shaft (3) which will be described later by closing one end opening of the chest (11).
It consists of a first side wall (13) provided with an insertion hole (12), and a second side wall (14) that closes the other end opening of the body (11).
また前記モータ(2)は、前記胴部(11)の内周面に
固定のステータ(21)と該ステータ(21)に対し回
転するロータ(22)とから構成され、該ロータ(22
)の軸芯部に主軸(3)の長さ方向一端側を挿嵌固定す
ると共に、該主軸(3)の長さ方向他端側を前記挿通孔
(12)を介して前記第1側壁(13)の外方に突出さ
せ、その突出端部に旋盤のチャックを組付けるようにし
ている。The motor (2) is composed of a stator (21) fixed to the inner peripheral surface of the body (11) and a rotor (22) that rotates with respect to the stator (21).
One longitudinal end of the main shaft (3) is inserted and fixed into the shaft core of the main shaft (3), and the other longitudinal end of the main shaft (3) is inserted into the first side wall (12) through the insertion hole (12). 13) is made to protrude outward, and the chuck of the lathe is assembled to the protruding end.
また前記主軸(3)は、その両端部を第1、第2軸受(
31)(32)を介して前記胴部(11)に回転自由に
支持している。Further, the main shaft (3) has both ends thereof supported by first and second bearings (
31) It is rotatably supported on the body part (11) via (32).
しかして本発明は、前記胴部(11)内における前記モ
ータ(2)の軸方向一側と他側とに、前記ステータ(2
1)とロータ(22)とのエアギャップ(23)を介し
て連通ずる冷媒入口室(4a)と冷媒出口室(4b)と
を設けて、前記胴部(11)内に、冷凍機(5)の蒸発
器とじて前記モータ(2)を冷却する冷却部(4)を設
けるのである。Accordingly, in the present invention, the stator (2) is provided on one side and the other side in the axial direction of the motor (2) in the body (11).
A refrigerant inlet chamber (4a) and a refrigerant outlet chamber (4b) are provided in the body (11) and communicate with each other through an air gap (23) between the refrigerant (1) and the rotor (22). ) is provided with a cooling section (4) that cools the motor (2) as well as an evaporator.
第1図に示す実施例では、前記冷媒入口室(4a)を、
前記胴部(11)内における前記モータ(2)と前記第
1側壁(13)側に位置する第1軸受(31)との間に
、また前記冷媒出口室(4b)を、前記胴部(11)内
における前記モータ(2)と前記第2側壁(14)側に
位置する第2軸受(32)との間にそれぞれ設けている
。In the embodiment shown in FIG. 1, the refrigerant inlet chamber (4a) is
The refrigerant outlet chamber (4b) is located between the motor (2) in the body (11) and the first bearing (31) located on the first side wall (13) side. 11) between the motor (2) and a second bearing (32) located on the second side wall (14) side.
また前記冷凍機(5)は、圧縮機(51)、ファン(5
2)を付設する凝縮器(53)、感温膨張弁で構成する
膨張機構(54)を備えた既知構造のものであって、前
記膨張機構(54)の出口側の液配管(55)を前記冷
媒入口室(4a)に、また前記圧縮機(51)の吸入側
のガス配管(56)を前記冷媒出口側室(4b)にそれ
ぞれ接続し、前記液配管(65)から供給される液冷媒
を前記冷却部(4)内で蒸発させるようにして、該冷却
部(4)を前記冷凍機(5)の蒸発器として用いるよう
にしている。The refrigerator (5) also includes a compressor (51), a fan (5
2), and an expansion mechanism (54) consisting of a temperature-sensitive expansion valve. A gas pipe (56) on the suction side of the compressor (51) is connected to the refrigerant inlet chamber (4a) and a gas pipe (56) on the suction side of the compressor (51) is connected to the refrigerant outlet side chamber (4b), and liquid refrigerant is supplied from the liquid pipe (65). is evaporated in the cooling section (4), and the cooling section (4) is used as an evaporator of the refrigerator (5).
また前記冷凍機(5)には、第1図に示すように、前記
冷却部(4)の出口管(41)と前記圧縮機(51)の
吸入側に接続される前記ガス配管(56)との間に、オ
リフィス等で構成する減圧機構(57)を介装する一方
、前記膨張機構(54)を構成する感温膨張弁の感温筒
(58)及び均圧管(59)を、前記減圧機構(57)
の出口側と前記圧縮機(1)の吸入側との間の前記ガス
配管(56)に設置している。As shown in FIG. 1, the refrigerator (5) also includes the gas pipe (56) connected to the outlet pipe (41) of the cooling section (4) and the suction side of the compressor (51). A pressure reducing mechanism (57) consisting of an orifice etc. is interposed between the temperature sensitive cylinder (58) of the temperature sensitive expansion valve and the pressure equalizing pipe (59) constituting the expansion mechanism (54). Decompression mechanism (57)
The gas pipe (56) is installed between the outlet side of the compressor (1) and the suction side of the compressor (1).
また第1図に示す実施例では、前記胴部(11)内にお
ける前記第1軸受(31)と前記第1側壁(13)との
間に、該第1側壁(13)の挿通孔(12)内周面と前
記主軸(3)外周面との隙間を閉鎖するメカニカルシー
ル(6)を介Hしている。Further, in the embodiment shown in FIG. 1, an insertion hole (12) of the first side wall (13) is provided between the first bearing (31) and the first side wall (13) in the body (11). ) A mechanical seal (6) is provided to close the gap between the inner peripheral surface and the outer peripheral surface of the main shaft (3).
前記メカニカルシール(6)は、第2図に示すように、
前記胴部(11)内に嵌合する環状スチール部材(61
)と、該スチール部材(61)の側端に接触する環状カ
ーボン部材(62)と、前記主軸(3)の外周に密着す
る筒状ゴム部材(63)と、前記カーボン部材(62)
及びゴム部材(63)を保持するホルダー(64)と、
該ホルダー(64)を前記環状スチール部材(61)側
に付勢させるコイルスプリング(65)と、前記主軸(
3)に固定されて前記スプリング(65)の一端を受は
止めるばね受け(66)とからなる既知構造のものであ
って、前記スプリング(65)を介して前記カーボン部
材(62)を前記スチール部材(61)に弾性的に圧接
させると共に、この圧接部には図示していないが潤滑油
を供給して、油膜を発生させることで、前記ノ1ウジン
グ(1)内の機密性を保持し、冷媒の漏れが生じないよ
うにしている。The mechanical seal (6), as shown in FIG.
an annular steel member (61) that fits within the body (11);
), an annular carbon member (62) in contact with the side end of the steel member (61), a cylindrical rubber member (63) in close contact with the outer periphery of the main shaft (3), and the carbon member (62).
and a holder (64) that holds the rubber member (63);
a coil spring (65) that biases the holder (64) toward the annular steel member (61);
3) and a spring receiver (66) fixed to the spring (65) to receive one end of the spring (65). The airtightness inside the housing (1) is maintained by elastically pressing the member (61) and supplying lubricating oil (not shown) to this press-contact portion to generate an oil film. , to prevent refrigerant leakage.
次に以上の構成からなる冷却装置の作用を説明する。Next, the operation of the cooling device having the above configuration will be explained.
前記冷凍機(5)の前記凝縮器(53)で凝縮された高
圧液は、前記膨張機構(54)で中間圧力に減圧された
後、前記冷却部(4)の冷媒入口室(4a)に導入され
、前記冷媒入口室(4a)と、前記エアギャップ(23
)及び前記冷媒出口室(4b)において蒸発すると共に
、前記冷媒出口室(4b)から排出される湿り状態の冷
媒は、前記減圧機構(57)で所定の吸入圧に減圧され
て再び前記圧縮機(1)に吸入されるのである。The high-pressure liquid condensed in the condenser (53) of the refrigerator (5) is reduced to an intermediate pressure in the expansion mechanism (54), and then transferred to the refrigerant inlet chamber (4a) of the cooling section (4). is introduced into the refrigerant inlet chamber (4a) and the air gap (23
) and the wet refrigerant that is evaporated in the refrigerant outlet chamber (4b) and discharged from the refrigerant outlet chamber (4b) is reduced in pressure to a predetermined suction pressure by the pressure reducing mechanism (57), and is then returned to the compressor. (1) is inhaled.
しかして前記冷却部(4)内での冷媒の蒸発作用により
、前記モータ(2)を構成するステータ(21)とロー
タ(22)、前記主軸(3)、更には前記第1、第2軸
受(31)(32)が直接冷却されるのであって、従っ
てこれら各部材を効率良く冷却出来るのであり、また前
記冷媒の蒸発温度を、制御すべき前記主軸(3)の温度
に調整して、その差を小さく出来るから、前記ハウジン
グ(1)の外面に結露が生じるのを抑制出来ながら、前
記主軸(3)の温度を外気温度に制御出来るのである。Therefore, due to the evaporation action of the refrigerant in the cooling section (4), the stator (21) and rotor (22) that constitute the motor (2), the main shaft (3), and also the first and second bearings. (31) and (32) are directly cooled, so each of these members can be efficiently cooled, and the evaporation temperature of the refrigerant is adjusted to the temperature of the main shaft (3) to be controlled, Since the difference can be made small, the temperature of the main shaft (3) can be controlled to the outside temperature while suppressing dew condensation on the outer surface of the housing (1).
従って前記主軸(3)の熱膨張差の低減を図ることが出
来るのである。Therefore, it is possible to reduce the difference in thermal expansion of the main shaft (3).
以上の実施例では、前記冷却N(4)に導入される冷媒
により前記第1、第2軸受(31)(32)をも冷却す
るようにしたが、例えば前記第1、第2軸受(31)(
32)が耐冷媒性の低い材料から形成されている場合に
は、第3図に示すように、前記メカニカルシール(6)
を、軸受(31)(32)の内側、つまりモータ(2)
側にその配役位置を変更するのが望ましい。In the above embodiment, the first and second bearings (31) and (32) are also cooled by the refrigerant introduced into the cooling N(4). )(
If the mechanical seal (6) is made of a material with low refrigerant resistance, as shown in FIG.
, inside the bearings (31) (32), that is, the motor (2)
It is desirable to change its casting position to the side.
即ち第3図に示す実施例では、前記第2側壁(14)に
も挿通孔(15)を形成して、前記主軸(3)の軸方向
両端部を前記第1、第2側壁(13)(14)の各挿通
孔(12)(15)を介してハウジング(1)の外方に
突出させたものであって、かかる構造のものでは、前記
挿通孔(12)(15)の内側に前記メカニカルシール
(8)(6)を設けるのであるが、第3図では前記各メ
カニカルシール(8)(8)を前記第1軸受(31)及
び第2軸受(32)に対し、前記モータ(2)側に設け
、これらメカニカルシール(8)(6)との間に前記冷
媒入口室(4a)、前記冷媒出口室(4b)とを形成し
、前記冷媒入口室(4a)及び冷媒出口室(4b)に導
入される冷媒が前記各軸受(31)(32)に接触しな
いようにしている。That is, in the embodiment shown in FIG. 3, an insertion hole (15) is also formed in the second side wall (14), and both axial ends of the main shaft (3) are inserted into the first and second side walls (13). (14) is made to protrude outward from the housing (1) through each of the insertion holes (12) and (15). The mechanical seals (8) and (6) are provided, and in FIG. 3, the mechanical seals (8) and (8) are connected to the motor ( 2), and the refrigerant inlet chamber (4a) and the refrigerant outlet chamber (4b) are formed between the mechanical seals (8) and (6), and the refrigerant inlet chamber (4a) and the refrigerant outlet chamber The refrigerant introduced into (4b) is prevented from contacting each of the bearings (31) and (32).
(発明の効果)
以上のことく本発明は、ハウジング(1)の胴部(工1
)におけるモータ(2)の軸方向一側と他側とに、該モ
ータ(2)を構成するステータ(21)とロータ(22
)とのエアギャップ(23)を介して連通ずる冷媒入口
室(4a)と冷媒出口室(4b)とを設けて、前記胴部
(11)内に、冷凍機の蒸発器として前記モータ(2)
を冷却する冷却部(4)を形成したことにより、前記冷
却部に導入される冷媒の蒸発作用で、前記モータ(2)
及び前記主軸(3)を直接冷却することが出来るので、
これら各部材を効率良く冷却出来ると共に、冷却部(4
)における蒸発温度を、制御すべき主軸(3)の温度に
近づけられるため、前記ハウジング(1)の外面に結露
が生じるのを抑制することが出来ながら、前記主軸(3
)の温度を外気温度に制御出来るのであり、従って前記
主軸(3)の熱膨張差を低減して工作機械の加工精度を
高めることが出来るのである。(Effects of the Invention) As described above, the present invention has the following advantages:
), a stator (21) and a rotor (22) constituting the motor (2) are disposed on one side and the other side in the axial direction of the motor (2).
) is provided with a refrigerant inlet chamber (4a) and a refrigerant outlet chamber (4b) communicating with the motor (2) as an evaporator of the refrigerator. )
By forming the cooling part (4) that cools the motor (2), the evaporation effect of the refrigerant introduced into the cooling part cools the motor (2).
And since the main shaft (3) can be directly cooled,
In addition to being able to efficiently cool each of these components, the cooling section (4
) can be brought close to the temperature of the main shaft (3) to be controlled, so that it is possible to suppress the formation of dew condensation on the outer surface of the housing (1).
) can be controlled to the outside temperature, and therefore, the difference in thermal expansion of the spindle (3) can be reduced and the machining accuracy of the machine tool can be improved.
第1図は本発明にかかるビルトインモータの冷却装置の
一実施例を示す断面図、第2図は要部の拡大断面図、第
3図は別の実施例を示す断面図、第4図は先に出願した
冷却装置の一例を示す断面図である。
(1)・・・・・・ハウジング
(11)・・・・胴部
(2)・・・・・・モータ
(21)・・・・ステータ
(22)・・・・ロータ
(23)・・・・エアギャップ
(3)・・・・・・主軸
(31)(32)・・・・軸受
(4)・・・・・・冷却部
(4a)・・・・冷媒入口室
(4b)・・・・冷媒出口室
1帖
第2図
第3図FIG. 1 is a cross-sectional view showing one embodiment of a built-in motor cooling device according to the present invention, FIG. 2 is an enlarged cross-sectional view of main parts, FIG. 3 is a cross-sectional view showing another embodiment, and FIG. It is a sectional view showing an example of the cooling device which applied earlier. (1) Housing (11) Body (2) Motor (21) Stator (22) Rotor (23) ...Air gap (3) ...Main shaft (31) (32) ...Bearing (4) ...Cooling section (4a) ...Refrigerant inlet chamber (4b) ... Refrigerant outlet chamber 1 tatami Figure 2 Figure 3
Claims (1)
21)及びロータ(22)をもつモータ(2)と、該モ
ータ(2)で駆動される主軸(3)及び該主軸(3)を
支持する軸受(31)(32)を内装し、前記主軸(3
)の少なくとも軸方向一端側を、前記ハウジング(1)
の側壁(13)から突出させたビルトインモータの冷却
装置であって、前記胴部(11)における前記モータ(
2)の軸方向一側と他側とに、前記ステータ(21)と
ロータ(22)とのエアギャップ(23)を介して連通
する冷媒入口室(4a)と冷媒出口室(4b)とを設け
て、前記胴部(11)内に、冷凍機の蒸発器として前記
モータ(2)を冷却する冷却部(4)を形成したことを
特徴とするビルトインモータの冷却装置。1) A stator (
A motor (2) having a rotor (21) and a rotor (22), a main shaft (3) driven by the motor (2), and bearings (31) and (32) supporting the main shaft (3) are installed inside the main shaft. (3
) at least one axial end side of the housing (1)
A cooling device for a built-in motor protruding from a side wall (13) of the motor (13) in the body (11).
A refrigerant inlet chamber (4a) and a refrigerant outlet chamber (4b) that communicate with each other via an air gap (23) between the stator (21) and the rotor (22) are provided on one side and the other side in the axial direction of 2). A cooling device for a built-in motor, characterized in that a cooling section (4) for cooling the motor (2) as an evaporator of a refrigerator is formed in the body section (11).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14970190A JPH0441154A (en) | 1990-06-07 | 1990-06-07 | Cooling device for built-in motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14970190A JPH0441154A (en) | 1990-06-07 | 1990-06-07 | Cooling device for built-in motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0441154A true JPH0441154A (en) | 1992-02-12 |
Family
ID=15480931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14970190A Pending JPH0441154A (en) | 1990-06-07 | 1990-06-07 | Cooling device for built-in motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0441154A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1134640A (en) * | 1997-07-24 | 1999-02-09 | Denso Corp | Vehicle air conditioner |
KR100544004B1 (en) * | 1998-12-31 | 2006-04-06 | 두산인프라코어 주식회사 | Cooling device for a built in motor |
KR100609631B1 (en) * | 2004-01-12 | 2006-08-08 | 인하대학교 산학협력단 | combined bearings for air spindle with single body |
-
1990
- 1990-06-07 JP JP14970190A patent/JPH0441154A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1134640A (en) * | 1997-07-24 | 1999-02-09 | Denso Corp | Vehicle air conditioner |
KR100544004B1 (en) * | 1998-12-31 | 2006-04-06 | 두산인프라코어 주식회사 | Cooling device for a built in motor |
KR100609631B1 (en) * | 2004-01-12 | 2006-08-08 | 인하대학교 산학협력단 | combined bearings for air spindle with single body |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101311317B1 (en) | Air cycle refrigeration and cooling system, and turbine unit for the air cycle refrigeration and cooling | |
WO2017183644A1 (en) | Turbo compressor and turbo refrigerator provided with same | |
US3514225A (en) | Motor driven compressors for refrigerating machines | |
JP2008190376A (en) | Turbine unit for air cycle refrigerating machine | |
JP2007162493A (en) | Compression expansion turbine system | |
JPH0441154A (en) | Cooling device for built-in motor | |
JP2008202477A (en) | Compressor | |
KR100349479B1 (en) | scroll compressor | |
JP2007056710A (en) | Turbine unit for air cycle refrigeration and cooling | |
US20050013701A1 (en) | Fluid machine served as expansion device and compression device | |
JP2007162492A (en) | Compression expansion turbine system | |
JP2002048066A (en) | Closed compressor | |
JP2007285158A (en) | Electric compressor | |
JP4513633B2 (en) | Compressor | |
JP2004251173A (en) | Compressor with closed type motor | |
JP2007162491A (en) | Compression expansion turbine system | |
JP2001200791A (en) | Hermetically sealed compressor and cooling method for hermetically sealed compressor | |
KR102610711B1 (en) | A turbo motor that engages two or more airfoil journal bearings and rotors into the air gap between the stator and the rotor | |
KR102402028B1 (en) | Drive motor cooling system | |
JP2019211036A (en) | Electromagnetic clutch and gas compressor | |
JPH0419037A (en) | Machine tool cooling device | |
JP2008184973A (en) | Compressor and air conditioner using the same | |
JP2005344683A (en) | Hermetic compressor | |
JPH0357895A (en) | Scroll type fluid machine | |
JP6311189B2 (en) | Electromagnetic clutch and gas compressor |