CN102536838A

CN102536838A - Draining pump for air conditioner

Info

Publication number: CN102536838A
Application number: CN2011103061253A
Authority: CN
Inventors: 小野寺康明
Original assignee: Saginomiya Seisakusho Inc
Current assignee: Saginomiya Seisakusho Inc
Priority date: 2010-12-16
Filing date: 2011-09-30
Publication date: 2012-07-04
Anticipated expiration: 2031-09-30
Also published as: CN102536838B; JP2012127281A; JP5285055B2

Abstract

The invention relates to a draining pump for an air conditioner. The draining pump aims at assembling motor portion (10) with precise concentricity and verticality, thus to reduce the noises of the water, motor, and vibration. Upon the cover housing (6) of the pump portion (20), a guiding portion (62) is formed winding the central shaft (L2) of the pump portion (20) and a vertical wall (63) is formed at the periphery thereof. The cylindric side (11a1) of the bearing cover (11a) (bearing portion) upon the bearing assembly formed upon the motor portion (10) is jogged inside the guiding surface (62b) of the upper end of the guiding portion (62). The flat portion (12a1) of the flange (12a) at the periphery of the bearing assembly (1) abuts against the joint surface at the upper end of the vertical wall (63) of the cover housing (6), thereby fixing the motor portion (10) and the pump portion (20).

Description

The use in refrigeration system draining pump

Technical field

The present invention relates to be used for discharging the use in refrigeration system draining pump of the water of the dish that uncovers that accumulates in air conditioner.

Background technique

In the past, for the use in refrigeration system draining pump, for example TOHKEMY 2002-48084 communique (patent documentation 1) and the disclosed pump of TOHKEMY 2000-80996 communique (patent documentation 2) were arranged.This draining pump disposes the small leaf (auxiliary blade) with the impeller Construction integration in being formed at the suction port cylindraceous of pump chamber bottom; Aspirate the water the dish that uncovers through making this small leaf rotate, thereby utilize the major diameter blade that is arranged on small leaf top that the water that aspirates is discharged to the outside from suction port.

Patent documentation 1: TOHKEMY 2002-48084 communique

Patent documentation 2: TOHKEMY 2000-80996 communique

Yet the pump portion that being used to of pump chamber makes the motor part of the DC brushless motor of impeller rotation etc. and have a pump chamber makes respectively, then this motor part is being assembled in the pump portion.But because the gap of each component of motor part and the influence of tolerance errors, centrad that each component of motor part and pump portion when assembling (lid housing, pump chamber housing, impeller) are mutual and perpendicularity etc. will produce deviation.When producing this deviation, especially during the centrad skew of impeller and main body (lid housing, pump chamber housing), will produce increase and the pump vibration bad influence such as increase greatly of increase, the motor sound of wheel blade noise.

Summary of the invention

Therefore, problem of the present invention is exactly to make the impeller rotation of pump portion through motor part, thereby is undertaken by said pump portion with high-precision centrad and perpendicularity motor part and pump portion being fitted together in the use in refrigeration system draining pump of suction and discharge of water.

For solving above-mentioned problem; The present invention program one use in refrigeration system draining pump; It makes the impeller rotation of pump portion through motor part, and with suction and discharge that said pump portion carries out water, it is characterized in that; Said motor portion possesses inside is equipped with the bearing of the live axle of motor, protrudes in the bearing portion of said pump portion side with this live axle, and in said pump portion side, be positioned at the periphery of above-mentioned bearing portion and the par that constitutes by face with the live axle quadrature of said motor; And said pump portion possess extend be arranged on the said motor side and be positioned at said pump portion central shaft around guide portion, and in the position of leaving laterally from guide sections and extension be arranged on the longitudinal wall of said motor side; The above-mentioned bearing portion of said motor portion has the cylindric side that is made up of the surface of revolution that with above-mentioned live axle is running shaft; The guide sections of said pump portion has and is formed at apart from the equidistant locational guide surface of the central shaft of said pump portion, and the above-mentioned longitudinal wall of said pump portion has with the orthogonality of center shaft of said pump portion and is positioned at the bearing surface on the circumference of central shaft; The above-mentioned cylindric side of the bearing portion of said motor portion is entrenched in the above-mentioned guide surface of guide portion of said pump portion; And under the state of the above-mentioned bearing surface butt of the above-mentioned longitudinal wall of above-mentioned par that makes said motor portion and said pump portion, said motor portion is fixed in the said pump portion.

The use in refrigeration system draining pump of scheme two is in the use in refrigeration system draining pump of scheme one record; It is characterized in that; The above-mentioned longitudinal wall of said pump portion is a drum; This pump portion has the outer wall of the drum that is formed at above-mentioned longitudinal wall periphery, on the different amount position of above-mentioned central shaft, is being formed with slit respectively on above-mentioned longitudinal wall and the above-mentioned outer wall, utilizes this longitudinal wall and outer wall to constitute double walled labyrinth structure.

The use in refrigeration system draining pump of scheme three is characterized in that said motor portion is the DC brushless motor in the use in refrigeration system draining pump of scheme one or scheme two records, this DC brushless motor has the stator circuit portion that is formed with stator unit in resin molded.

Effect of the present invention is; Use in refrigeration system draining pump according to scheme one; Since the telescoping part of the bearing portion through motor part and the guide portion of pump portion with bearing fixing on the central shaft of pump portion; The abutment portion of the bearing surface of the par through motor part and the longitudinal wall of pump portion is fixed under the state of the orthogonality of center shaft of the par of motor part and pump portion; Thereby make the live axle of motor part and the central shaft of pump portion as one man carry out the decision at center, can reduce the centrad of motor part and pump portion and the skew of perpendicularity.In addition, owing on live axle, utilize nearest bearing portion to carry out the decision at center, and the longitudinal wall of pump portion is in the position of leaving laterally from guide portion, thereby centrad and verticality precision increase.

Use in refrigeration system draining pump according to scheme two; Except the effect of scheme one; Because the underwater sound that utilizes labyrinth structure to make to prevent pump etc. leaks into the outside,, thereby become simple for the structure that obtains these two effects simultaneously with the structure of longitudinal wall as the part of this labyrinth structure.

Use in refrigeration system draining pump according to scheme three; Except scheme one or two effect; Owing on bearing portion being set directly at resin molded of stator unit integrally formed, can guarantee the precision of the centrad of motor part, thereby centrad and verticality precision further increase.

Description of drawings

Fig. 1 is the partial, partially-cross-sectioned side-elevation view of the use in refrigeration system draining pump of mode of execution of the present invention.

Fig. 2 is the bearing unit and the stereogram that covers housing of the use in refrigeration system draining pump of this mode of execution.

Fig. 3 is the sectional block diagram of summary situation of major component of the use in refrigeration system draining pump of this mode of execution of expression.

Among the figure:

The 1-bearing unit, 11-frame, 11a-bearing cap (bearing portion), the cylindric side of 11a1-, 12-inner housing, 12a-lip portions; The 12a1-par, 14-bearing, 3-stator circuit portion, 31-stator unit, the resin molded portion of 32-, 41-live axle; 5-pump chamber housing, 6-covers housing, 62-guide portion, 62a-grooving, 62b-guide surface, 63-longitudinal wall; The 63a-bearing surface, 63b-slit, 64-outer wall, 64b-slit, 7-impeller, 71-axle embedding part; The 10-motor part, 20-pump portion, 30-fixing part (carriage), L1-axle, L2-central part.

Embodiment

Below, with reference to accompanying drawing, the mode of execution of use in refrigeration system draining pump of the present invention is described.Fig. 1 is the partial, partially-cross-sectioned side-elevation view of the use in refrigeration system draining pump of this mode of execution, and Fig. 2 is the bearing unit of this use in refrigeration system draining pump and the stereogram of lid housing, and Fig. 3 is the sectional block diagram of summary situation of the major component of this use in refrigeration system draining pump of expression.In addition, Fig. 1 is corresponding with the A-A cross section of Fig. 2, and Fig. 3 is corresponding with the B-B cross section of Fig. 2.In following explanation, also abbreviate the use in refrigeration system draining pump as " draining pump ".This draining pump has motor part 10, pump portion 20 and fixing part (carriage) 30.

Motor part 10 have pump portion 20 sides bearing unit 1, with bearing unit 2, stator circuit portion 3 and the rotor 4 of pump portion 20 opposite sides.Bearing unit 1 assembles inner housing 12, the oily member 13 of guarantor and the bearing 14 of the frame 11 of slim circular tank shape, slim circular tank shape.Frame 11 forms with the punch process of inner housing 12 through plate, and frame 11 has as " bearing portion " the bearing cap 11a that covers bearing 14 in the central authorities of discoid bottom.In addition, inner housing 12 has lip portions 12a at peripheral end.And, be fitted in the inner housing 12 through frame 11, thus the external shell of frame 11 and inner housing 12 formation bearing uniies 1.At this, the lip portions 12a of the bottom of frame 11 and inner housing 12 becomes same, and the face of pump portion 20 sides of this lip portions 12a constitutes par 12a1 (with reference to Fig. 2).

The live axle 41 of rotor 4 utilizes bearing 14 to support and connects bearing cap 11a, and it protrudes in pump portion 20 sides.In addition, bearing cap 11a protrudes in pump portion 20 sides to cover bearing 14 such shapes, and it is the cylindric side 11a1 that the surface of revolution of running shaft constitutes that its peripheral part becomes by the axle L1 with live axle 41.In addition, the lip portions 12a of inner housing 12 is positioned at pump portion 20 sides, and the par 12a1 of this lip portions 12a constitutes the axle L1 plane orthogonal with live axle 41.In addition, bearing unit 2 also is the structure same with bearing unit 1, and is supporting the upper end of live axle 41.

In stator circuit portion 3 is embedded in resin molded 32 with stator unit 31 and not shown circuit board and constitute.Form with BMC (Bulk Molding compound, bulk moulding material) resin for resin molded 32.This BMC resin is in unsaturated polyester, to have mixed the packing of glass fibre and the moulding material that calcium carbonate (bulking agent) is made bulk (bulk).And, after stator unit 31 grades are placed mould,, pressurize again, heat treated and integrally formed through this BMC resin is filled in the mould.

In stator circuit portion 3, be formed with through hole 3a,

bearing unit

1,2 is configured in the opening portion of through hole 3a, and rotor 4 is arranged in this through hole 3a.So stator unit 31 constitutes the three-phase DC brushless motor with rotor 4.

Pump portion 20 has slim columnar pump chamber housing 5 that is made of resin and the columnar lid housing 6 that is made of resin.On pump chamber housing 5, be formed with the suction port 51 in the not shown dish that uncovers that is configured in air conditioner, and the exhaust port 52 that connects not shown discharge tube.In addition, be formed with not shown embedding part, install and fix pump chamber housing 5 and lid housing 6 through this embedding part being buckled in the underpart of covering housing 6 at three places of pump chamber housing 5 peripheries.In pump chamber housing 5, be provided with impeller 7.Impeller 7 has an embedding part 71, and below this embedding part 71, has four tabular small leaf 72 that extend along the direction of central axis L 2, and this small leaf 72 is configured in the suction port 51.And axle embedding part 71 is fixed on the live axle 41 of motor part 10.In addition; Between axle embedding part 71 and small leaf 72, have and form the roughly open circles cone-plate 73 of the ring-type of inverted cone-shaped; Impeller 7 rotates through motor part 10; Through small leaf 72 in suction port 51 inward turnings then make uncover the dish in waterborne being raised in the suction port 51, these water because of centrifugal force to open circles cone-plate 73 side shiftings.Then, the water in the pump chamber housing 5 rotates through this open circles cone-plate 73, and water is discharged from exhaust port 52 because of its centrifugal force.

In the central authorities of lid housing 6, around the central axis L 2 of pump portion 20, be formed with dehydration portion 61, extend to motor part 10 sides from this dehydration portion 61 and be provided with guide portion 62.Guide portion 62 is cylindrical, is formed with vertical grooving 62a (with reference to Fig. 2) at its two positions.Thus, guide portion 62 be positioned at pump portion 20 central axis L 2 around.The inboard of guide portion 62 upper ends and central axis L 2 with pump portion 20 are that the cylindric side 11a1 of the above-mentioned bearing cap 11a of axle is in a ratio of the slightly little concentric circular-arc guide surface 62b (with reference to Fig. 2) of diameter.This guide surface 62b is formed on apart from central axis L 2 on equidistant position.

In addition, on lid housing 6, be formed with the longitudinal wall cylindraceous 63 that extends setting to motor part 10 sides in the position of leaving laterally from guide portion 62.The end face of motor part 10 sides of this longitudinal wall 63 and central axis L 2 quadratures of pump portion 20, and become the bearing surface 63a (with reference to Fig. 2) that is positioned on this central axis L 2 circumference on every side.And this bearing surface 63a is the lip part 12a butt with the inner housing 12 of the above-mentioned bearing unit 1 of motor 10 in its full week.In addition, on longitudinal wall 63, be formed with the slit 63b of the position that is positioned at 180 ° each other.In addition, also be formed with a plurality of vertical raised line 63c in the periphery of longitudinal wall 63.

Have again, on lid housing 6, form the outer wall cylindraceous 64 of oriented motor part 10 sides extension setting in the periphery of longitudinal wall 63.Periphery at this outer wall 64 is formed with the 64a of convex portion that is installed on two positions.In addition, on outer wall 64, leaving 90 ° position, be formed with and be positioned at the slit 64b that leaves 180 ° of positions each other from the slit 63b of longitudinal wall 63.

Through above structure, the bearing cap 11a of motor part 10 sides is embedded in the upper end portion of the guide portion 62 of pump portion 20 sides, motor part 10 is configured in the upper end of pump portion 20.And, make fixing part (carriage) 30 and motor part 10 chimeric, the installation convex 30a of portion of this fixing part (carriage) 30 is docked with the 64a of convex portion of lid housing 6, utilize tapping screw N that fixing part (carriage) 30 covered on the housing 6 with screw.

Under this assembled state; The cylindric side 11a1 of bearing cap 11a is entrenched in the guide surface 62b of guide portion 62 of pump portion 20; Two guide portion 62 betweens respect to one another have two grooving 62a; Owing to be that resin is processed, so guide surface 62b utilizes its elastic force to push cylindric side 11a1 and fixes.Thus; The telescoping part of the bearing cap 11a through motor part 10 sides and the guide portion 62 of pump portion 20 and bearing 14 is fixed on the central axis L 2 of pump portion 20; The par 12a1 (lip portions 12a) that utilizes motor part 10 is fixed under the state of central axis L 2 quadratures of the par of motor part 10 12a1 and pump portion 20 with the abutment portion of the bearing surface 63a of the longitudinal wall 63 of pump portion 20, thereby the central axis L 2 of live axle of motor part 10 41 and pump portion 20 is as one man carried out the decision at center.Therefore, can reduce motor part 10 and the centrad of pump portion 20 and the skew of perpendicularity.Therefore, in pump portion 20, can make the impeller 7 and the gap of each one of lid housing 6 around central axis L 2, keep certain, can reduce the underwater sound, motor sound and chatter.In addition, on live axle 41, utilize the cylindric side 11a1 of nearest bearing cap 11a (bearing portion) to carry out the decision at center.In addition, the installation convex 30a of portion, the fixing of 64a that utilize tapping screw N to carry out mainly are to fix with the mode of mutual extrusion in axle L2 (L1) direction, are not to carry out the decision of position, the decision at center.

In the above-described embodiment, the par 12a1 of motor part 10 sides of the bearing surface 63a institute butt of longitudinal wall 63 is positioned at the periphery (lip portions 12a) that one has the bearing unit 1 of bearing cap 11a.That is, by the center of guide portion 62 decision with by the vertical of bearing surface 63a decision because to be utilization carry out as the bearing unit 1 of a body component of motor part 10 sides, thereby precision further improves.

In pump portion 20, longitudinal wall 63 and outer wall 64 are formed with the space between it.In addition, be formed with except that the slit of longitudinal wall 63 on 90 ° of alternate diverse locations, also having two slit 63b of longitudinal wall 63 and two slit 64b of outer wall 64 around axle L2.Therefore, become the labyrinth structure that leads to the outside through the space between slit 63b, longitudinal wall 63 and the outer wall 64, slit 64b from longitudinal wall 63 inboard spaces.Therefore, can reduce the main underwater sound that in suction port 51, produces and leak into the outside from slit 64b.Have again, because on longitudinal wall 63, the space side between longitudinal wall 63 and outer wall 64 is formed with a plurality of raised line 63c, thereby can utilize this raised line 63c to carry out the scattering and the absorption of sound, can further reduce the underwater sound, motor sound and chatter and leak into the outside.

In above mode of execution; In motor part 10 is embedded in resin molded 32 with stator unit 31 and circuit board and constitute, have good water resistence and corrosion resistance, but as motor part; Also can be that stator unit and circuit board, rotor etc. are contained in the type in the motor casing; In this case, have from motor casing itself or from motor casing with the outstanding bearing portion of live axle, can likewise carry out the decision at center with mode of execution.

Claims

1. use in refrigeration system draining pump, it makes the impeller rotation of pump portion through motor part, and carries out the suction and the discharge of water with said pump portion, it is characterized in that,

Said motor portion possess inside be equipped with motor live axle bearing and protrude in the bearing portion of said pump portion side with this live axle; And in said pump portion side, be positioned at the periphery of above-mentioned bearing portion and the par that constitutes by face with the live axle quadrature of said motor; And

Said pump portion possess extend be arranged on the said motor side and be positioned at said pump portion central shaft around guide portion, and in the position of leaving laterally from guide sections and extension be arranged on the longitudinal wall of said motor side,

The above-mentioned bearing portion of said motor portion has the cylindric side that is made up of the surface of revolution that with above-mentioned live axle is running shaft; The guide sections of said pump portion has and is formed at apart from the equidistant locational guide surface of the central shaft of said pump portion; The above-mentioned longitudinal wall of said pump portion has with the orthogonality of center shaft of said pump portion and is positioned at the bearing surface on the circumference of central shaft

The above-mentioned cylindric side of the bearing portion of said motor portion is entrenched in the above-mentioned guide surface of guide portion of said pump portion; And under the state of the above-mentioned bearing surface butt of the above-mentioned longitudinal wall of above-mentioned par that makes said motor portion and said pump portion, said motor portion is fixed in the said pump portion.

2. use in refrigeration system draining pump according to claim 1 is characterized in that,

The above-mentioned longitudinal wall of said pump portion is a drum; This pump portion has the outer wall of the drum that is formed at above-mentioned longitudinal wall periphery; On the different amount position of above-mentioned central shaft, be formed with slit respectively on above-mentioned longitudinal wall and the above-mentioned outer wall, utilizing this longitudinal wall and outer wall to constitute double walled labyrinth structure.

3. use in refrigeration system draining pump according to claim 1 and 2 is characterized in that,

Said motor portion is the DC brushless motor, and this DC brushless motor has the stator circuit portion that is formed with stator unit in resin molded.