JP2013194621A - Drainage pump - Google Patents

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JP2013194621A
JP2013194621A JP2012063219A JP2012063219A JP2013194621A JP 2013194621 A JP2013194621 A JP 2013194621A JP 2012063219 A JP2012063219 A JP 2012063219A JP 2012063219 A JP2012063219 A JP 2012063219A JP 2013194621 A JP2013194621 A JP 2013194621A
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motor
receiving member
pump
drainage pump
support portion
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JP5999942B2 (en
JP2013194621A5 (en
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Tomoya Kato
友也 加藤
Katsushi Sato
克司 佐藤
Hisashi Sato
永 佐藤
Kenji Yamakai
健治 山開
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Fujikoki Corp
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Fujikoki Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a drainage pump for reducing paddling sound and vibration by suppressing eccentricity of a rotary blade connected to a molded motor with respect to a pump body.SOLUTION: A drainage pump 1 includes a rotary blade 30 stored in a pump body 10, wherein a reception member 50 is fixed to an upper part of the pump body 10. A molded motor 100 is supported to a motor support part 70 of the reception member 50. A lower bearing 130 of the molded motor 100 is pressed in a bearing support part 74 of the reception member 50. An output shaft 140 of the molded motor 100 is inserted in a hole of a mounting shaft 32 of the rotary blade 30.

Description

本発明は、エアコン室内機に装備されてドレン水を排出する排水ポンプに関する。   The present invention relates to a drainage pump that is provided in an air conditioner indoor unit and discharges drain water.

パッケージエアコン等の天井埋め込み型エアコンの室内機においては、冷媒がエバポレータで凝縮する際に生じるドレン水をドレンパンに貯留し、このドレン水を排水ポンプで吸い上げて室外へ向けて送り出している。   In indoor units of ceiling-embedded air conditioners such as packaged air conditioners, drain water generated when refrigerant condenses in an evaporator is stored in a drain pan, and the drain water is sucked up by a drain pump and sent out to the outside.

下記の特許文献１は、ポンプの回転羽根の駆動源をモールドモータで構成した排水ポンプを開示している。
この排水ポンプは、回転羽根を回転自在に収容するポンプ本体と、回転羽根を駆動するモールドモータと、ポンプ本体の上部に固着されてモールドモータを支持する受け部材と、受け部材の上部に固着されて受け部材との間にモールドモータの収容室を形成するカバーとを備えている。
モールドモータは、ステータ、回路基板等が絶縁樹脂でモールド封止されるために、滴下水等に対して耐水効果を発揮することができる。 The following Patent Document 1 discloses a drainage pump in which a drive source of a rotary blade of a pump is configured by a mold motor.
The drainage pump includes a pump body that rotatably accommodates rotating blades, a mold motor that drives the rotating blades, a receiving member that is fixed to an upper portion of the pump body and supports the mold motor, and is fixed to an upper portion of the receiving member. And a cover for forming a housing space for the molded motor between the receiving member and the receiving member.
Since the stator, the circuit board, and the like are molded and sealed with an insulating resin, the mold motor can exhibit a water resistance effect against dripping water or the like.

特開２０１０−２７５９７２号公報JP 2010-275972 A

上述した公報に開示された排水ポンプにあっては、モールドモータは、受け部材と、これにスナップフィットで結合されるカバーとによって形成される収容室内に収容され、モールドモータの駆動軸がポンプ本体内の回転羽根の連結軸に設けた穴に圧入されて回転羽根を支持する構成となっている。   In the drainage pump disclosed in the above-mentioned publication, the mold motor is housed in a housing chamber formed by a receiving member and a cover coupled to this by a snap fit, and the drive shaft of the mold motor is the pump body. The rotary blades are press-fitted into holes provided in the connecting shafts of the rotary blades to support the rotary blades.

上述した構造にあっては、モールドモータを収容する収容室の内側面とモールドモータの外周面との間に僅かなクリアランスが存在する。これにより、排水ポンプの運転中にモールドモータが受け部材に対して径方向に移動して回転羽根がポンプ本体に対して偏心するため、回転羽根の周囲に形成される隙間の大きさが不均一になり、水かき音や振動の増加原因となる。
そこで本発明の目的は、上述した不都合を解消する排水ポンプを提供することにある。 In the above-described structure, there is a slight clearance between the inner surface of the storage chamber that houses the mold motor and the outer peripheral surface of the mold motor. As a result, the mold motor moves in the radial direction with respect to the receiving member during operation of the drainage pump, and the rotating blades are eccentric with respect to the pump body, so the size of the gap formed around the rotating blades is uneven. This causes an increase in web noise and vibration.
Therefore, an object of the present invention is to provide a drainage pump that eliminates the above-mentioned disadvantages.

上記目的を達成するために、本発明の排水ポンプは、回転羽根を収容するポンプ本体と、回転羽根を駆動するモールドモータと、ポンプ本体の上部に固着されてモールドモータを支持する受け部材と、受け部材の上部に固着されて受け部材との間にモールドモータの収容室を形成するカバーとを備えた排水ポンプであって、受け部材は、ポンプ本体の上部の開口部を覆う蓋部と、蓋部と一体的に形成されるとともに上面が開口した筒状のモータ支持部とを含み、モータ支持部は、モールドモータのモータ本体の下面を支持するとともに前記モータ本体の外周面に近接する本体支持部と、前記モータ本体から下方に突出する下軸受が圧入される筒状の軸受支持部とを有するものである。   In order to achieve the above object, the drainage pump of the present invention includes a pump body that accommodates the rotating blades, a mold motor that drives the rotating blades, a receiving member that is fixed to the upper portion of the pump body and supports the mold motor, A drainage pump having a cover fixed to the upper part of the receiving member and forming a housing for the molded motor between the receiving member and the receiving member, a lid that covers the opening of the upper part of the pump body; And a cylindrical motor support portion formed integrally with the lid portion and having an upper surface opened. The motor support portion supports the lower surface of the motor body of the molded motor and is close to the outer peripheral surface of the motor body. A support portion and a cylindrical bearing support portion into which a lower bearing protruding downward from the motor body is press-fitted.

そして、カバーを受け部材にスナップフィット形式で固着する取付具を備えるものとすることができる。
また、カバーが、受け部材に固着された状態でモールドモータを下方に押圧する押え部を備えるようにすることが好ましい。 The cover may be provided with a fixture that is fixed to the receiving member in a snap-fit manner.
Moreover, it is preferable that the cover includes a pressing portion that presses the mold motor downward while being fixed to the receiving member.

本発明の排水ポンプは、受け部材に形成した筒状の軸受支持部にモールドモータの下軸受を圧入してモータを支持するので、排水ポンプ運転中にモールドモータが受け部材に対して径方向に移動することがない。したがって、回転羽根のポンプ本体に対する偏心量が小さくなり、水かき音と振動の低減を図ることができる。   Since the drainage pump of the present invention supports the motor by press-fitting the lower bearing of the molded motor into the cylindrical bearing support portion formed on the receiving member, the molded motor is in a radial direction with respect to the receiving member during the drainage pump operation. There is no movement. Therefore, the amount of eccentricity of the rotary blade with respect to the pump main body is reduced, and it is possible to reduce the web noise and vibration.

本発明の排水ポンプの正面図。The front view of the drainage pump of this invention. 本発明の排水ポンプの縦断面図。The longitudinal cross-sectional view of the drainage pump of this invention. 図１のＡ−Ａ断面図。AA sectional drawing of FIG. 図１のＢ−Ｂ断面図。BB sectional drawing of FIG. モールドモータの部品図。Part drawing of a molded motor.

図１に示すように、排水ポンプ１はポンプ本体１０を備え、ポンプ本体１０は、吸込口１２，ポンプ室１４及び吐出口１６を有する。ポンプ室１４内には回転羽根３０が装備され、回転羽根３０は、取付軸３２，小径羽根３４及び大径羽根（図示せず）を有する。
ポンプ本体１０は合成樹脂で構成され、上方に突出する２個の取付脚２０を有し、この取付脚２０に対して受け部材５０がスナップフィット形式で固着される。 As shown in FIG. 1, the drainage pump 1 includes a pump body 10, and the pump body 10 has a suction port 12, a pump chamber 14, and a discharge port 16. A rotary blade 30 is provided in the pump chamber 14, and the rotary blade 30 has an attachment shaft 32, a small diameter blade 34, and a large diameter blade (not shown).
The pump body 10 is made of synthetic resin and has two mounting legs 20 projecting upward. A receiving member 50 is fixed to the mounting legs 20 in a snap-fit manner.

受け部材５０は合成樹脂で形成され、ポンプ本体１０の上面の開口部を覆う蓋部５２を有する。蓋部５２の中央に設けた貫通穴５４に回転羽根３０の取付軸３２が挿入され、ポンプ本体１０と受け部材５０の間にはＯリング４０が嵌装される。また、蓋部５２には２個の凸部５６が形成されており、これらは受け部材５０を取付脚２０にスナップフィットする際に利用される。   The receiving member 50 is formed of a synthetic resin and has a lid portion 52 that covers the opening on the upper surface of the pump body 10. The mounting shaft 32 of the rotary blade 30 is inserted into a through hole 54 provided in the center of the lid portion 52, and an O-ring 40 is fitted between the pump body 10 and the receiving member 50. In addition, two convex portions 56 are formed on the lid portion 52, and these are used when the receiving member 50 is snap-fitted to the mounting leg 20.

受け部材５０の上部にはモータ支持部７０が設けられている。モータ支持部７０は上端に本体支持部７２を有し、本体支持部７２と蓋部５２は一対の外側支柱６０と一対の内側支柱６２とにより連結される。モータ支持部７０にはモールドモータ１００が支持される。   A motor support portion 70 is provided on the upper portion of the receiving member 50. The motor support portion 70 has a main body support portion 72 at the upper end, and the main body support portion 72 and the lid portion 52 are connected by a pair of outer struts 60 and a pair of inner struts 62. A mold motor 100 is supported on the motor support portion 70.

図５はモールドモータ１００の部品構成を示す。モールドモータ１００はモータコアなどを樹脂でモールドしたモータ本体１１０と、出力軸１４０を回転自在に支持する上軸受１２０及び下軸受１３０を備える。上軸受１２０は、フレーム１２２とフレーム１２２内に装備される軸受本体１２３を有する。下軸受１３０も、同様に、フレーム１３２とフレーム１３２内に装備される軸受本体１３３を有する。   FIG. 5 shows a component configuration of the molded motor 100. The molded motor 100 includes a motor body 110 in which a motor core or the like is molded with resin, and an upper bearing 120 and a lower bearing 130 that rotatably support the output shaft 140. The upper bearing 120 includes a frame 122 and a bearing body 123 that is provided in the frame 122. Similarly, the lower bearing 130 has a frame 132 and a bearing body 133 mounted in the frame 132.

本体支持部７２は有底筒状に形成され、モータ本体１１０の下面を支持するとともにモータ本体１１０の外周面に近接する。本体支持部７２の底部７６の中央部には円筒状の軸受支持部７４が形成される。モールドモータ１００の下軸受１３０はこの軸受支持部７４に圧入される。   The main body support portion 72 is formed in a bottomed cylindrical shape, supports the lower surface of the motor main body 110 and is close to the outer peripheral surface of the motor main body 110. A cylindrical bearing support 74 is formed at the center of the bottom 76 of the main body support 72. The lower bearing 130 of the molded motor 100 is press-fitted into the bearing support portion 74.

モールドモータ１００の出力軸１４０は、回転羽根３０の取付軸３２の中心部に設けた有底の穴に挿入され、出力軸１４０と取付軸３２の間には水切板４２が取り付けられる。   The output shaft 140 of the mold motor 100 is inserted into a bottomed hole provided at the center of the mounting shaft 32 of the rotary blade 30, and a draining plate 42 is mounted between the output shaft 140 and the mounting shaft 32.

モータ支持部７０の上部には有蓋円筒状のカバー８０が覆せられ、スナップフィット形式の取付具９０により受け部材５０に固着される。カバー８０は合成樹脂で形成されており、排水ポンプ１を室内ユニットに取り付けるための取付部８２を有する。取付部８２は取り付け用の貫通穴を有し、この貫通穴を介してビス等により室内ユニットに固着される。カバー８０の中央部には上軸受収容部８４が形成されている。また、カバー８０の頂壁内面に形成される押え部８６は、カバー８０が受け部材５０に固着された状態でモールドモータ１００の上面を押圧してモールドモータ１００を本体支持部７２の底部に圧接するので、振動を抑制することができる。   A covered cylindrical cover 80 is covered on the upper portion of the motor support portion 70, and is fixed to the receiving member 50 by a snap-fit attachment 90. The cover 80 is made of synthetic resin and has an attachment portion 82 for attaching the drainage pump 1 to the indoor unit. The attachment portion 82 has a through hole for attachment, and is fixed to the indoor unit with a screw or the like through the through hole. An upper bearing housing portion 84 is formed at the center of the cover 80. Further, the pressing portion 86 formed on the inner surface of the top wall of the cover 80 presses the upper surface of the mold motor 100 in a state where the cover 80 is fixed to the receiving member 50 and presses the mold motor 100 against the bottom portion of the main body support portion 72. Therefore, vibration can be suppressed.

本発明の排水ポンプは、受け部材５０の軸受支持部７４にモールドモータ１００の下軸受１３０を圧入することにより、モールドモータ１００が受け部材５０に対して径方向に移動するのを防ぐことができる。これによって、回転羽根３０とポンプ本体１０との同軸性が向上して回転羽根３０の周囲に形成される隙間の大きさが均一になるので、モールドモータ１００や回転羽根３０の振動が低減し、また回転羽根３０の水かき音も低減する。   The drainage pump of the present invention can prevent the mold motor 100 from moving in the radial direction with respect to the receiving member 50 by press-fitting the lower bearing 130 of the molded motor 100 into the bearing support portion 74 of the receiving member 50. . As a result, the coaxiality between the rotary blade 30 and the pump body 10 is improved, and the size of the gap formed around the rotary blade 30 becomes uniform, so that vibrations of the mold motor 100 and the rotary blade 30 are reduced. Further, the web noise of the rotary blade 30 is also reduced.

１ 排水ポンプ
１０ ポンプ本体
１２ 吸込口
１４ ポンプ室
１６ 吐出口
２０ 取付脚
３０ 回転羽根
３２ 取付軸
３４ 小径羽根
４０ Ｏリング
４２ 水切板
５０ 受け部材
５２ 蓋部
５４ 貫通穴
５６ 凸部
６０ 外側支柱
６２ 内側支柱
７０ モータ支持部
７２ 本体支持部
７４ 軸受支持部
７６ 底部
８０ カバー
８２ 取付部
８４ 上軸受収容部
８６ 押え部
９０ 取付具
１００ モールドモータ
１１０ モータ本体
１２０ 上軸受
１２２ フレーム
１３０ 下軸受
１３２ フレーム
１４０ 出力軸 DESCRIPTION OF SYMBOLS 1 Drain pump 10 Pump main body 12 Suction port 14 Pump chamber 16 Discharge port 20 Mounting leg 30 Rotating blade 32 Mounting shaft 34 Small diameter blade 40 O-ring 42 Drain plate 50 Receiving member 52 Cover part 54 Through-hole 56 Convex part 60 Outer support | pillar 62 Inner side Post 70 Motor support portion 72 Main body support portion 74 Bearing support portion 76 Bottom portion 80 Cover 82 Mounting portion 84 Upper bearing housing portion 86 Pressing portion 90 Mounting tool 100 Mold motor 110 Motor main body 120 Upper bearing 122 Frame 130 Lower bearing 132 Frame 140 Output shaft

Claims (3)

回転羽根を収容するポンプ本体と、前記回転羽根を駆動するモールドモータと、前記ポンプ本体の上部に固着されて前記モールドモータを支持する受け部材と、前記受け部材の上部に固着されて前記受け部材との間に前記モールドモータの収容室を形成するカバーとを備えた排水ポンプであって、
前記受け部材は、前記ポンプ本体の上部の開口部を覆う蓋部と、該蓋部と一体的に形成されるとともに上面が開口した筒状のモータ支持部とを含み、
前記モータ支持部は、前記モールドモータのモータ本体の下面を支持するとともに前記モータ本体の外周面に近接する本体支持部と、前記モータ本体から下方に突出する下軸受が圧入される筒状の軸受支持部とを有することを特徴とする排水ポンプ。 A pump main body that accommodates the rotating blades, a mold motor that drives the rotating blades, a receiving member that is fixed to an upper portion of the pump main body and supports the mold motor, and an upper portion of the receiving member that is fixed to the receiving member. A drainage pump provided with a cover that forms a storage chamber of the molded motor between,
The receiving member includes a lid that covers an opening at the top of the pump body, and a cylindrical motor support that is formed integrally with the lid and has an upper surface that is open.
The motor support portion is a cylindrical bearing that supports the lower surface of the motor body of the molded motor and is press-fitted with a body support portion that is close to the outer peripheral surface of the motor body and a lower bearing that protrudes downward from the motor body. A drainage pump comprising a support portion. 前記カバーを前記受け部材にスナップフィット形式で固着する取付具を備えることを特徴とする請求項１記載の排水ポンプ。   The drainage pump according to claim 1, further comprising an attachment for fixing the cover to the receiving member in a snap-fit manner. 前記カバーは、前記受け部材に固着された状態で前記モールドモータを下方に押圧する押え部を備えることを特徴とする請求項１又は２記載の排水ポンプ。   3. The drainage pump according to claim 1, wherein the cover includes a pressing portion that presses the mold motor downward while being fixed to the receiving member. 4.
JP2012063219A 2012-03-21 2012-03-21 Drainage pump Active JP5999942B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105099011A (en) * 2014-05-23 2015-11-25 株式会社不二工机 Stator assembly, magnetic rotor type motor with stator assembly, and pump
JP2018025188A (en) * 2016-08-09 2018-02-15 合利美股▲分▼有限公司 Drainage pump for air conditioner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6754333B2 (en) * 2017-08-04 2020-09-09 株式会社鷺宮製作所 Drainage pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11236893A (en) * 1998-02-19 1999-08-31 Kunimori Kagaku Co Ltd Drain pump
JP2008190469A (en) * 2007-02-06 2008-08-21 Fuji Koki Corp Drain pump
JP2010275972A (en) * 2009-05-29 2010-12-09 Fuji Koki Corp Drainage pump
JP2012127281A (en) * 2010-12-16 2012-07-05 Saginomiya Seisakusho Inc Drainage pump for air conditioner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11236893A (en) * 1998-02-19 1999-08-31 Kunimori Kagaku Co Ltd Drain pump
JP2008190469A (en) * 2007-02-06 2008-08-21 Fuji Koki Corp Drain pump
JP2010275972A (en) * 2009-05-29 2010-12-09 Fuji Koki Corp Drainage pump
JP2012127281A (en) * 2010-12-16 2012-07-05 Saginomiya Seisakusho Inc Drainage pump for air conditioner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105099011A (en) * 2014-05-23 2015-11-25 株式会社不二工机 Stator assembly, magnetic rotor type motor with stator assembly, and pump
KR20150135073A (en) * 2014-05-23 2015-12-02 가부시기가이샤 후지고오키 Stator assembly, magnet rotor type motor with stator assembly and pump
JP2015223045A (en) * 2014-05-23 2015-12-10 株式会社不二工機 Stator assembly and magnet rotor type motor including the same and pump
KR102305049B1 (en) * 2014-05-23 2021-09-27 가부시기가이샤 후지고오키 Stator assembly, magnet rotor type motor with stator assembly and pump
JP2018025188A (en) * 2016-08-09 2018-02-15 合利美股▲分▼有限公司 Drainage pump for air conditioner

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