CN105927549A

CN105927549A - Draining pump

Info

Publication number: CN105927549A
Application number: CN201510897687.8A
Authority: CN
Inventors: 日下直树; 滨田正吾; 富田沙祈子
Original assignee: Saginomiya Seisakusho Inc
Current assignee: Saginomiya Seisakusho Inc
Priority date: 2015-02-26
Filing date: 2015-12-08
Publication date: 2016-09-07
Anticipated expiration: 2035-12-08
Also published as: CN105927549B; JP2016156366A; JP6001709B2

Abstract

The invention provides a draining pump which can avoid the bubble invading towards the outlet even if the bubble is generated in the blade of the pump rotor and erupts from the slit of the outer wall, can reduce the noise and improve the cut-out head. The draining pump includes a pump shell including a suction inlet, an outlet and a rotor accommodating chamber, and a pump rotor rotating by a rotation driving mechanism, rotationally disposed in the rotor accommodating chamber of the pump shell and including a blade with major diameter passing by the suction inlet and given centrifugal force by the guided fluid. The pump rotor also includes a circular outer wall surrounding the blade with major diameter, and one or more medial-lateral diameter connection part disposed on part of the outer wall surrounding the periphery of upper border of the blade with major diameter. The position of the center line of the medial-lateral diameter connection part is closer than the position of the outlet to the direction of the upper border of the blade with major diameter.

Description

Draining pump

Technical field

The present invention relates to draining pump, particularly relate to can higher keeping quite property, simultaneously cutout can be made to raise The draining pump of Cheng Shangsheng.

Background technology

In air-conditioning equipment, it is known that the draining that the water by lodging in drain pan etc. are discharged to outside and arranged Pump.In such draining pump, utilize that motor makes to be contained in pump chamber has big footpath blade and path blade Pump rotor rotates, and utilizes the centrifugal force produced because of the collision with big footpath blade to make to be picked up by path blade Water disperses to blade profile direction, and discharges from outlet.

In recent years, sought the minimizing of operation noise in air-conditioning equipment, and also sought to make to be arranged at this air-conditioning equipment The operation sound of draining pump and be accompanied by this and the type of various noises that produces also reduces.Such as, even Produce because of the action of draining pump small stir the underwater sound and also can become problem.

In conventional draining pump, known following technology: as Patent Document 1, by big footpath blade Profile portion arranges ring (outer ring), it is possible to the expansion of the air layer of suppression blade interior, thus prevents from sky Being involved in of the air of gas-bearing formation, and then noise when reducing big footpath blade agitation water.

Further, also known following technology: as shown in Figure 25, Figure 39 of patent documentation 2, by outer ring A part window frame is set, make the water of the high pressure near blade outer ring flow out in pump accommodating chamber, it is thus possible to Cutout lift is enough made to rise (H-Max).

Prior art literature

Patent documentation 1: No. 3254325 description of Japan Patent

Patent documentation 2: Japanese Unexamined Patent Publication 08-210289 publication

But, in the technology shown in patent documentation 2, if the position discomfort of window frame is just, then the sky of blade interior A part for gas-bearing formation becomes bubble and sprays from window frame, enters in main body outlet, collides with outlet inwall, Thus have the problems such as noise penalty.

Summary of the invention

Therefore, even if it is an object of the invention to provide the blade interior at pump rotor to produce bubble and bubble Spray from the slit of outer wall, also be able to avoid bubble towards invading in outlet, noise can be reduced make to break simultaneously The draining pump that stream lift rises.

In order to solve above-mentioned problem, the draining pump of the present invention is characterised by possessing: pump case, and it has Suction inlet, outlet and rotor accommodating chamber；Pump rotor, it can be configured at said pump housing rotationally In above-mentioned rotor accommodating chamber, and have and give the big of centrifugal force to the fluid that is imported into by above-mentioned suction inlet Footpath blade；And rotary drive mechanism, it makes said pump rotor rotate, and said pump rotor is also equipped with: ring-type Outer wall, it surrounds around above-mentioned big footpath blade；And internal-and external diameter interconnecting part, it is above-mentioned to surround It is one or more of that a part for the above-mentioned outer wall that the mode of the periphery of the upper limb of big footpath blade is formed is arranged Internal-and external diameter interconnecting part, and the position that the position of internal-and external diameter interconnecting part is more consistent than with the centrage of above-mentioned outlet Rest against the upper limb direction of above-mentioned big footpath blade.

Further, above-mentioned internal-and external diameter interconnecting part can also be two.

Further, the section of above-mentioned internal-and external diameter interconnecting part can also be rectilinear form.

Further, the section of above-mentioned internal-and external diameter interconnecting part can also be cone-shaped.

Further, the section of above-mentioned internal-and external diameter interconnecting part can also be step shape.

Further, by above-mentioned internal-and external diameter connected component from the part of above-mentioned outer wall can also be by above-mentioned big footpath leaf Sheet supports.

Further, the parting line of the metal pattern forming above-mentioned internal-and external diameter interconnecting part can also be located at above-mentioned big footpath leaf Sheet.

And, it is also possible to it is the air conditioning system possessing above-mentioned draining pump.

The effect of invention is as follows.

According to the present invention, it is possible to provide even if the blade interior at pump rotor produces bubble and bubble from outer wall Slit sprays, it is also possible to avoid bubble to invade in outlet, it is possible to reduce noise and make on cutout lift simultaneously The draining pump risen.

Accompanying drawing explanation

Fig. 1 is the figure of the structure of an embodiment of the draining pump representing the present invention.

Fig. 2 is the top perspective view of the pump rotor of the draining pump shown in Fig. 1.

Fig. 3 is the front sectional view of the pump rotor of the draining pump shown in Fig. 1, and Fig. 3 (a) is that sundstrand pump turns Son and metal pattern and the front sectional view that represents, Fig. 3 (b) is the enlarged drawing shown in the IIIb of Fig. 3 (a), Fig. 3 (c) is the figure of the slit representing the tapered shape of section, and Fig. 3 (d) is to represent that section is step shape The figure of slit.

Fig. 4 is the figure of the IV part shown in enlarged representation Fig. 1.

Fig. 5 is the figure of the embodiment of the slit location representing the draining pump changing the present invention.

Fig. 6 is the figure representing the slit location shown in Fig. 5 with the position relationship of outlet centrage.

Fig. 7 is the slit location figure with the relation of noise of the draining pump representing the present invention.

Fig. 8 is the structure chart of the example of the air conditioning system representing the draining pump employing the present invention.

In figure:

100 draining pumps, 110 lower houses, 110a suction inlet, 110b rotor receiving portion, 110c Minor diameter part, 110d outlet, 111,511 pump rotors, 111a comb blade (big footpath blade), 111b, 511b outer wall, 111c supporting mass, 111d cross shape portion (path blade), 111e turns Sub-axle, 112,312,322,512 slits (internal-and external diameter interconnecting part), 120 upper shells, 121 drive With motor, 121a output shaft, 122 bracket for mounting, 123 O, 800 air conditioning systems, 801 indoor heat exchangers, 802 expansion valves, 803 outdoor heat exchanger, 804 compressors, 805 Drain pan, 806 draining pumps, 807 discharge outlet, 808 control panels.

Detailed description of the invention

Hereinafter, referring to the drawings embodiments of the present invention are illustrated.

In Fig. 1, draining pump 100 includes that lower component such as is constituted as staple: lower house 110；Energy Enough pump rotors 111 being configured at rotationally in lower house 110；Formed together with the inner peripheral portion of lower house 110 The upper shell 120 of rotor accommodating chamber；It is configured at the top of upper shell 120 and drives the driving of pump rotor 111 With motor 121；And at inner containment drive motor 121 and be fixed on outside together with upper shell 120 Bracket for mounting 122.

Lower house 110 is formed as having: the suction inlet 110a that tubular ground extends to the lower section of central part bottom； Rotor receiving portion 110b extended to funnel-form centered by suction inlet 110a；From rotor receiving portion 110b The minor diameter part 110c that extends to the direction orthogonal with the central axis of suction inlet 110a of upper portion side wall；And Outlet 110d from the extension of minor diameter part 110c side further out.As described later, lower house 110 One end of suction inlet 110a is such as configured at drain pan 805 (with reference to Fig. 8), outlet 110d such as with row Outlet 807 (with reference to Fig. 8) connects.

It is formed at the cylindrical portion of lower end of upper shell 120 via O 123 and the pump of lower house 110 The opening of the upper end of receiving portion 110b connects, by par and the lower house of the lower end of upper shell 120 Pump receiving portion 110b of 110 forms pump accommodating chamber.Central shape in the par of the lower end of upper shell 120 Become through hole 120a.The armature spindle 111e of pump rotor 111 described later is inserted from below towards through hole 120a, And the output shaft 121a of drive motor 121 described later is had from top connection.Therefore, pump case become by Lower house 110 and upper shell 120 are formed.

Drive motor 121 such as can use the DC of the platypelloid type of applied voltage 12V or 13V brushless Motor, it is supported on the top of upper shell 120.Further, the output shaft 121a of drive motor 121 Rotating speed also is able to control by control panel 802 (with reference to Fig. 8) described later according to delivery flow.Further, Though the diagram of omission, but upper shell 120 has air connectivity hole in multiple positions.Additionally, drive motor 121 are not limited to above-mentioned example, it is also possible to be other DC motor, the band coding that can control rotating speed AC motor, other the motors such as the shaded-pole motor of device.

Fig. 2 is the top perspective view of the pump rotor 111 of the draining pump 100 shown in Fig. 1, and Fig. 3 is Fig. 1 institute The front sectional view of the pump rotor 111 of the draining pump 100 shown, Fig. 3 (a) is sundstrand pump rotor 100 He Metal pattern 300 and the front sectional view that represents, Fig. 3 (b) is the enlarged drawing shown in the IIIb of Fig. 3 (a), Fig. 3 (c) is the figure of the slit 312 representing the tapered shape of section, and Fig. 3 (d) is to represent that section is step The figure of the slit 322 of shape.

As shown in Figure 1 to Figure 3, pump rotor 111 is such as integrally formed by resin material, and is formed as possessing: Constitute the comb blade 111a of multiple quadrangular shapes of the big footpath blade of convection cell imparting centrifugal force；With many The surrounding of individual comb blade 111a is adjacent to the ring-type outer wall 111b carrying out surrounding；To multiple comb blades The lower end of 111a and outer wall 111b carries out the supporting mass 111c of the circular cone shape supported；Towards supporting mass 111c central authorities bottom extend cross shape body and be constitute stirred fluid and pick up the path of fluid The cross shape portion 111d of blade；To supporting mass 111c central authorities top extend cylindrical shape body and It is the armature spindle 111e that is connected of the output shaft 121a with drive motor 121.Resin material is the most transparent Property material, or can also be black, the resin material of white or be mixed with the material of other colors.

Multiple comb blade 111a are such as by resin material and a bodily form such as supporting mass 111c, outer wall 111b Become, and there is rectangular section.Further, multiple comb blade 111a configure the most at substantially equal intervals, and It is configured to the interval from armature spindle 111e with regulation.Further, the height of multiple comb blade 111a is formed Be positioned in common plane for position, respective the top, the length of multiple comb blade 111a be formed as from Peripheral part is longer towards center.Additionally, the big footpath leaf being made up of multiple comb blades 111 of present embodiment The diameter of sheet isThe diameter of the minor diameter part 110c of discharge path isBut do not limit Due to this.Further, the sidewall of pump receiving portion 110b of lower house 110 and the outer wall 111b of pump rotor 111 Interval be 0.5～2.0mm, but be not limited to this.

Additionally, in the present embodiment, multiple comb leaves of quadrangular shape are employed as big footpath blade Sheet 111a, but it is not limited to this, it is possible to use cylindrical shape, multiple comb blades of other shapes, And multiple comb blade can not certainly be used, and use multiple vane plates in big footpath.Big by replacing The vane plate in footpath and use multiple comb blade, have hole when can reduce rotation, when can reduce operating The effect of noise.Further, as path blade, employ the blade of cross shape, but be not limited to This, it is possible to use other shapes, and if fluid can be picked up with big footpath blade, then it is of course possible to not shape Path blade is become to keep cylindrical shape.

Outer wall 111b is the expansion of the air layer in order to suppress blade interior and arranges, be therefore prevented from from Being involved in of the air of air layer, thus the minimizing of noise is contributed to when big footpath blade agitation water.Specifically, In the case of there is not outer wall 111b, due to after the blade that stirred out by big footpath blade the fluid of stream by court Outer extruding, so causing pressure to decline, as result, is involved in air from the air layer of blade interior.Because of volume Enter air and produce bubble, or the bubble produced ruptures in a large number, thus easily produce vibration, noise.With this Relatively, in the case of there is outer wall 111b, due to flow after reducing the blade stirred out by big footpath blade The pressure of fluid declines, it is possible to reduce the phenomenon being involved in air from air layer, as a result, it is possible to press down Make the noise during blade agitation water of big footpath.Herein, the height of outer wall 111b is to make with as big footpath blade Multiple height identical for comb blade 111a, if but the position higher than comb blade 111a, then can Enough keeping quite property.

In the draining pump 100 of the present invention, it is provided with slit 112 at the outer wall 111b of pump rotor 111.Slit 112 parts being located at outer wall 111b, become the inside and outside internal-and external diameter connection of connection outer wall 111b Portion.Slit 112 produces jet flow from the inside outward portion of outer wall 111b.Thus, the sidewall of pump accommodating chamber with The pressure in the gap between the outer wall 111b of pump rotor 111 rises, in being pushed back by the air layer of blade interior Side, and the expansion of the air layer of blade interior can be suppressed such that it is able to prevent the air from air layer It is involved in, it is possible to reduce the noise during blade agitation water of big footpath further.Further, owing to utilizing jet flow to make blade The water of the high pressure near outer ring is thus able to make cutout lift increase towards outflow in pump accommodating chamber.

As shown in Fig. 3 (a), in the case of at pump rotor 111, slit 112 is set, except not shown from Use two the segmentation moulds caved in from left and right outside the metal pattern combined up and down semicirclely, arrange in its front end The projection compareed with the shape of slit 112, it is also possible to shape with four metal patterns.Slit 112 can also Arranging throughout complete cycle, in this case, the part of the outer wall 111b separated by slit 112 is by external diameter leaf Sheet supports.Further, the parting line of the metal pattern forming slit 112 can also be located at big footpath blade.This situation Under, owing to the burr in typing portion do not cover internal-and external diameter interconnecting part, so produce prevent hinder fluid flowing this One effect.Further, as shown in Fig. 3 (b), the upper support of the slit 112 of outer wall 111b is in multiple combs Tingia sheet 111a contacts the part of outer wall 111b.Further, the shape of slit can also replace Fig. 3 (b) The slit 112 of shown rectilinear form, and as shown in Fig. 3 (c), it is the slit 312 of cone-shaped, or It can also be the slit 322 of step shape as shown in Fig. 3 (d).

Next the position of slit is illustrated with the relation of noise.

Fig. 4 is the figure of the IV part shown in enlarged representation Fig. 1.As shown in Figure 4, flow out from slit 112 Bubble towards as discharge path minor diameter part 110c direction produce.Now, if the position of slit 112 Be height that certain is certain above, then the bubble created is difficult to invade little inside portion 110c, thus reduces Noise.This is because, it is possible to if the bubble produced is invaded minor diameter part 110c, bubble is including minor diameter part The sound produced during collision in the discharge path of 110c and outlet 110d suppresses.

Fig. 5 is the figure of the embodiment of the slit location representing the draining pump changing the present invention.Such as Fig. 5 Shown in, prepare pump rotor 511 outer wall 511b by shape No1 down～6 slit location set There is each sample of slit 512, carry out the mensuration of noise.

Fig. 6 is the figure representing the slit location shown in Fig. 5 with the position relationship of outlet centrage.As Fig. 5, Shown in Fig. 6, the slit 512 of shape No1 is not groove, and becomes the shape of the upper end of the outer wall 511b that prunes Shape, and the top as the comb blade 511a of big footpath blade becomes the state not covered by outer wall 511b. Further, during the slit 512 of shape No5 becomes outlet centrage CL (Center Line) and slit The state that heart line is consistent.In the present embodiment, outlet centrage CL represents the path in discharge path The centrage of portion 110c.

Fig. 7 is the slit location figure with the relation of noise of the draining pump representing the present invention.As it is shown in fig. 7, If the position of slit 512 is than outlet centrage CL more on the lower, noise penalty, if being positioned at from outlet center Position upwards, position consistent with slit centrage for line CL then noise decrease.Further, if not groove, and Become the shape of the upper end of the outer wall 511b that prunes, and big footpath blade become the state not covered by outer wall, Then noise penalty.If this is because, there is the position not covered by outer wall, then by big footpath blade in big footpath blade The bubble produced during agitation water is extruded to pump case from this position, thus becomes the reason of noise.

Above, as use Fig. 4 to Fig. 5 to illustrate, it is known that, if outside pump rotor 111,511 Wall 111b, 511b arrange slit 112,512, and the position of slit is than outlet centrage CL and slit The consistent position of centrage is top, and than outer wall upper end on the lower, then reduce noise.

Additionally, the bar number of slit 112,512 be one, two or more all there is effect.Further, By experiment, if slit width is below 0.5mm, then have suppress blade interior bubble ejection, Reduce the effect that noise makes cutout lift rise simultaneously.Therefore, if the draining pump of present embodiment 100 is also full This condition of foot, then obtain further effect.

Fig. 8 is the structure chart of the example of the air conditioning system representing the draining pump employing the present invention.In Fig. 8, Air conditioning system 800 possesses indoor heat exchanger 801, expansion valve 802, outdoor heat exchanger 803 and pressure Contracting machine 804.As well-known, air conditioning system 800 is for switching ground to cooling operation, heating operating The indoor air conditioner (RAC) connected and constitute or air-conditioning box (PAC) etc..But, shown below Drain pan 805 and draining pump 806 be only used for cooling operation, thus also be able to be only used for freeze cycle. Air conditioning system 800 is also equipped with: is arranged at the vicinity of indoor heat exchanger 801, catches to condense and hand in Indoor Thermal Change planes 801 the drain pan 805 of water droplet etc. of steam pipe arrangement etc.；Pick up the water droplet lodging in drain pan 805 Deng draining pump 806 (corresponding with the draining pump 100 of the present invention.)；Outlet 110d with draining pump 806 Connect and to externally drained discharge outlet 807；And be connected with draining pump 806 and drive draining pump 806 Control panel 808..

Owing to being configured at indoor heat exchanger 801 for the draining pump 806 of air conditioning system 800 as constructed as above Vicinity, it requires the minimizing of operation noise, the draining pump 100 of the present invention also requires Gao An such The environment of static stability uses.

As it has been described above, according to the present invention, it is possible to provide following draining pump: the outer wall at pump rotor arrange one or The multiple slit of person, if the position making the position of slit more consistent with slit centrage than outlet centrage CL is leaned on Upper and than outer wall upper end on the lower, even if then bubble sprays from the slit of outer wall, it is also possible to avoid bubble towards row Invade in outlet, it is possible to reduce noise and make cutout lift increase simultaneously.

Claims

1. a draining pump, it is characterised in that possess:

Pump case, it has suction inlet, outlet and rotor accommodating chamber；

Pump rotor, it can be configured in the above-mentioned rotor accommodating chamber of said pump housing rotationally, and have right The fluid being imported into by above-mentioned suction inlet gives the big footpath blade of centrifugal force；And

Rotary drive mechanism, it makes said pump rotor rotate,

Said pump rotor is also equipped with:

Ring-type outer wall, it surrounds around the blade of above-mentioned big footpath；And

Internal-and external diameter interconnecting part, it is upper formed in the way of the periphery of the upper limb of encirclement above-mentioned big footpath blade State the one or more of internal-and external diameter interconnecting part that a part for outer wall is arranged, and in internal-and external diameter interconnecting part The position more consistent than with the centrage of above-mentioned outlet, the position of heart line is by the upper limb direction of above-mentioned big footpath blade.

Draining pump the most according to claim 1, it is characterised in that

Above-mentioned internal-and external diameter interconnecting part is two.

Draining pump the most according to claim 1 and 2, it is characterised in that

The section of above-mentioned internal-and external diameter interconnecting part is rectilinear form.

4. according to the draining pump described in any one of claims 1 to 3, it is characterised in that

The section of above-mentioned internal-and external diameter interconnecting part is cone-shaped.

5. according to the draining pump described in any one of Claims 1 to 4, it is characterised in that

The section of above-mentioned internal-and external diameter interconnecting part is step shape.

6. according to the draining pump described in any one of Claims 1 to 5, it is characterised in that

By above-mentioned internal-and external diameter connected component from the part of above-mentioned outer wall by above-mentioned big footpath supporting blades.

7. according to the draining pump described in any one of claim 1～6, it is characterised in that

Above-mentioned big footpath blade is located at by the parting line of the metal pattern forming above-mentioned internal-and external diameter interconnecting part.

8. an air conditioning system, it is characterised in that

Possesses the draining pump described in any one of claim 1～7.