CN101294579A - Drain pump, and air conditioner provided therewith - Google Patents
Drain pump, and air conditioner provided therewith Download PDFInfo
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- CN101294579A CN101294579A CNA2008101102401A CN200810110240A CN101294579A CN 101294579 A CN101294579 A CN 101294579A CN A2008101102401 A CNA2008101102401 A CN A2008101102401A CN 200810110240 A CN200810110240 A CN 200810110240A CN 101294579 A CN101294579 A CN 101294579A
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Abstract
The invention relates to a drain pump and an air conditioner with the same. is provided that reduces the operating noise when the head is low. The drain pump has a pump casing, and an impeller. The pump casing has a drain inlet for sucking in drain water at a lower end part and a drain outlet for discharging drain water at a side part. The impeller has a shaft part disposed extending in a vertical direction inside the pump casing, a main blade disposed on the outer circumferential side of the shaft part, an auxiliary blade disposed on the lower side of the main blade, and a disc shaped dish part disposed between the main blade and the auxiliary blade. The dish part has an annular partition part extending upward from the outer circumferential edge part of the main blade, which is disposed at a position lower than the upper end part of the partition part. The drain pump can reduce the operating noise of a drain pump when the head is low.
Description
The present invention is that application number is 200480012906.X (PCT/JP2004/017773), and the applying date is on November 30th, 2004, and denomination of invention is divided an application for the Chinese invention patent application of " draining pump and have the air bells conditioner of this draining pump ".
Technical field
The present invention relates to a kind of draining pump and have the air bells conditioner of this draining pump.
Background technique
In air bells conditioner, be provided with draining pump, so that when cooling operation and during dry operating, the draining that produces in heat exchanger is discharged.This draining pump is built in for example Figure 14, Figure 15 and the ceiling imbedded formula air bells conditioner 1 shown in Figure 16.Here, Figure 14 is the stereoscopic figure (omission ceiling board) of air bells conditioner 1.Figure 15 is the summary sectional side view of air bells conditioner 1, is the A-A sectional drawing of Figure 16.Figure 16 is the summary section plan of air bells conditioner 1, is the B-B line sectional drawing of Figure 15.
At the downside of heat exchanger 6, dispose the drainage tray 7 that is used for being received in the draining that heat exchanger 6 produced, drainage tray 7 is installed in the bottom of shell 2.Drainage tray 7 has: inlet hole 71, and it forms with the suction port 31 of decoration panel 3 and is communicated with; Blow out hole 72, it forms corresponding with the blow-off outlet 32 of decoration panel 3; And draining receiving groove 73, its downside at heat exchanger 6 forms, and is used to receive draining.In addition, in the inlet hole 71 of drainage tray 7, dispose horn mouth 5, above-mentioned horn mouth 5 is used for the impeller 41 from suction port 31 inhaled airs guiding gas fan 4.And, in the draining receiving groove 73 of drainage tray 7, do not dispose the part (particularly, blowing out between the hole 72) of heat exchanger 6, dispose the draining pump 308 that the draining that accumulates in the draining receiving groove 73 is discharged to the outside of shell 2.This draining pump 308 is connected by the discharge tube (not shown) that is configured in shell 2 outsides.
Such draining pump 308 mainly has as shown in figure 17: pump case 81, be provided with draining suction port 81a in the underpart, and be provided with draining exhaust port 81b at sidepiece; Impeller 382 is configured in the pump case 81, and is that the center can rotate with the axial region 91 that extends along Vertical direction in pump case 81; Motor 83 is configured in the upside of pump case 81, and axial region 91 rotations of drives impeller 382.In the side of motor 83, motor is installed installs with accessory 89, motor is installed the shell 2 that is used for draining pump 308 is installed in air bells conditioner 1 with accessory 89.Here, Figure 17 is the side view (illustrating the section of pump case 81) of existing draining pump 308.In addition, the P-P line is made as the spin axis of the axial region 91 of impeller 382.
As Figure 18 and shown in Figure 19, impeller 382 is mainly by constituting with the bottom: the axial region 91 that is connected with the live axle of motor 83; Be configured in the primary blades 392 in the main part 84a; Be configured in the auxiliary blade 94 of the downside of primary blades 392; And discoid tray portion 93, be configured between primary blades 392 and the auxiliary blade 94, and be provided with the opening portion 93a that constitutes by the ring-type through hole in the central.Here, Figure 18 is the enlarged view of the pump case 81 of expression Figure 17.Figure 19 is the planimetric map (omitting motor 83 and housing lid 85 in the diagram) of existing draining pump 308.
In draining pump 308 with this structure, when drive motor 83, impeller 82 rotates with prescribed direction, so the part of the 84b of suction portion is submerged under the water surface of the draining in the draining receiving groove 73 that accumulates in drainage tray 7, therefore, accumulate in the draining in the draining receiving groove 73, be inhaled into from draining suction port 81a by auxiliary blade 94, in the 84b of suction portion, rise, arrive main part 84a.And, arrive the draining of main part 84a, by primary blades 392 boosted after, discharge to the outside of the shell 2 of air bells conditioner 1 from draining exhaust port 81b by the 84c of discharge nozzle portion.Specifically, from the draining that draining exhaust port 81b discharges, discharge by outside that is configured in shell 2 and the discharge tube that is connected with the 84c of discharge nozzle portion.In this structure, the water surface that rises to main part 84a is blocked down haply by tray portion 93, and a part of barred is restricted the mobile of draining, and the draining that contacts with primary blades 392 is discharged from (for example, referring to Patent Document 1,2,3 and 4).
But draining pump 308 does not stop, but can regulate discharge flow rate by water level h (with reference to Figure 18).That is, when water level h descended, the discharge flow rate of draining pump 308 reduced, and when water level h rose, discharge flow rate increased.In addition, when water level h rises to a certain water level, just arrive maximum discharge flow rate, even water level h rises to more than or equal to above-mentioned a certain water level, discharge flow rate can not change yet.Therefore, even under the situation that the production of the draining in heat exchanger 6 changes, at the production of draining and the water level of discharge flow rate balance, above-mentioned draining pump 308 also can runs steadily.
Here, in the main part 84a of draining pump 308, decline along with water level h, air layer is concentric circles with the axial region 91 with primary blades 392 and enlarges (with reference to the gas-liquid interface X of Figure 18 and Figure 19), therefore the useful area that send the water work done of primary blades 392 will reduce, and the discharge flow rate of draining pump 308 reduces.On the contrary, when water level h rose, because air layer dwindles, the useful area that send the water work done of primary blades 392 will become greatly, and the discharge flow rate of draining pump 308 increases.So the structure of existing draining pump 308 is to regulate discharge flow rate by water level h.
In addition, for example, according to the condition that is provided with that is connected the discharge tube on the draining exhaust port 81b (piping length, internal diameter or height etc.), back pressure can diminish sometimes.In this case, because the lift step-down of draining pump 308 enlarges so air layer is concentric circles ground with the axial region 91 with primary blades 392.
Generally, the pump of the form that such draining pump 308 and impeller are not had by water logging is fully compared, because the part of configuration primary blades 392 forms the gas-liquid interface of air and water, so pump efficiency is low, and running noise is big.And this running noise mainly produces by primary blades 392 agitation air layers, and air layer enlarges to the outer circumferential side of primary blades 392 more, and it is big more that acceleration just becomes.Particularly, when low lift, the gas-liquid interface of air and water (with reference to the gas-liquid interface Y of Figure 18 and Figure 19) expands the high peripheral part of peripheral velocity to, therefore, can produce very large running noise.The gas fan 4 of air regulator 1 for low air quantity and air conditioning chamber in quietly under the situation, this running noise becomes problem especially.
Relative therewith, as shown in figure 20, for by making gas-liquid interface Y successfully flow through the upper end portion of separating part 93b, reduce running noise, adopted such impeller 382: (specifically in primary blades 392, the the 1st and the 2nd blade 395,396) peripheral part, and only the upper portion (part between blade height H1 and the pallet height H2 promptly) in the upper end portion of separating part 93b is provided with rake 395a, 396a.Yet,, can not reduce running noise fully even in this case.
Patent documentation 1: the spy opens flat 10-115294 communique
Patent documentation 2: the spy opens the 2000-80996 communique
Patent documentation 3: the spy opens the 2000-240581 communique
Patent documentation 4: the spy opens the 2001-342984 communique
Summary of the invention
The objective of the invention is to reduce the running noise of the draining pump when low lift.
One of the present invention's draining pump has housing and impeller.Housing is provided with the draining suction port that is used for suction drain in its underpart, be provided with the draining exhaust port that is used to discharge draining at its sidepiece.Impeller has: the axial region that extends configuration in housing along Vertical direction; Be configured in the primary blades of axial region outer circumferential side; Be configured in the auxiliary blade of primary blades downside; And, be configured between primary blades and the auxiliary blade and be provided with the discoid tray portion of opening in central authorities.Tray portion also has the ring-type separating part that extends upward from its outer periphery portion.The outer periphery portion of primary blades is configured in than on the low position, the upper end portion of separating part.
In such draining pump, because the outer periphery of the primary blades that peripheral velocity is high are configured in than on the low position, separating part upper end portion, therefore when low lift, even the gas-liquid interface at air and water expands under the situation of the high peripheral part of peripheral velocity, also can relax the collision between the peripheral part of gas-liquid interface and primary blades, can reduce running noise.Particularly, under the operating condition of low water level and situation that the operating condition of low lift overlaps, can more effectively reduce running noise.
And, owing to be configured in the locational part lower, be that peripheral velocity is high and to the outer periphery portion of the big primary blades of running noise influence than separating part upper end portion, therefore relax near the primary blades outer periphery portion gas-liquid interface and the collision between the primary blades; And in interior perimembranous, the effect of the collision that relaxes gas-liquid interface and primary blades is reduced, can send the useful area of water work done to guarantee primary blades, thereby can suppress the reduction of draining pump performance to greatest extent the smaller primary blades of the influence of running noise.
Therefore, use this draining pump, can suppress the reduction of pump performance, and can reduce the running noise when low lift.
The present invention's two draining pump, on one of the present invention's draining pump basis, the outer periphery portion of primary blades be configured in than the inner peripheral surface of separating part more close in the side in week.
In this draining pump, because the outer periphery portion of primary blades is configured in than the separating part inner peripheral surface of tray portion one side in more close interior week, and the diameter of primary blades is less than the diameter of tray portion inner peripheral surface, therefore, can improve the gas-liquid interface of mitigation primary blades outer periphery portion and the effect of the collision between the primary blades.
The present invention's three draining pump, one of the present invention or two draining pump basis on, primary blades, with along with its peripheral part near outer periphery portion, blade height gradually the mode of step-down tilt.
In this draining pump, because the blade height of primary blades peripheral part is along with near outer periphery portion step-down gradually, therefore at the peripheral part of primary blades, be easy to guarantee that primary blades can send the useful area of water work done, thereby can further suppress the reduction of draining pump performance.
The present invention's four draining pump has housing and impeller.Housing is provided with the draining suction port that is used for suction drain in its underpart, be provided with the draining exhaust port that is used to discharge draining at its sidepiece.Impeller has: the axial region that extends configuration in housing along Vertical direction; Be configured in the primary blades of axial region outer circumferential side; Be configured in the auxiliary blade of primary blades downside; And, be configured between primary blades and the auxiliary blade and be provided with the discoid tray portion of opening in the central.Primary blades forms, along with from its inner circumference edge portion near outer periphery portion, blade height is step-down gradually.
In such draining pump and since the blade height of primary blades along with from its inner circumference edge portion near outer periphery portion step-down gradually, therefore, no matter be when low lift, the gas-liquid interface of air and water expands under the situation of the high peripheral part of peripheral velocity; Perhaps when low lift, water level rises, and compares with the situation that water level is low, and gas-liquid interface is positioned under the situation of perimembranous, can both relax the collision between the peripheral part of gas-liquid interface and primary blades.
Therefore, use this draining pump, even under the situation of the change in location that causes gas-liquid interface because of SEA LEVEL VARIATION, the running noise in the time of also reducing low lift.
The present invention's five draining pump has housing and impeller.Housing is provided with the draining suction port that is used for suction drain in its underpart, be provided with the draining exhaust port that is used to discharge draining at its sidepiece.Impeller has: the axial region that extends configuration in housing along Vertical direction; Be configured in the primary blades of axial region outer circumferential side; Be configured in the auxiliary blade of primary blades downside; And, be configured between primary blades and the auxiliary blade and be provided with the discoid tray portion of opening in the central.Primary blades is formed with the jog of blade height with concavo-convex variation at least at peripheral part.
In such draining pump, owing to be formed with jog at the high primary blades peripheral part of peripheral velocity, therefore, even when low lift, the gas-liquid interface of air and water expands under the situation of the high peripheral part of peripheral velocity, also can relax the collision between the peripheral part of gas-liquid interface and primary blades, and can reduce running noise.Particularly, under the operating condition of low water level and situation that the operating condition of low lift overlaps, can reduce running noise effectively.
And, also be formed with under the situation of jog in the interior perimembranous of primary blades, no matter be when low lift, the gas-liquid interface of air and water expands under the situation of the high peripheral part of peripheral velocity; Perhaps when low lift, water level rises, and compares with the situation that water level is low, and gas-liquid interface is positioned under the situation of perimembranous, can both relax the collision between the peripheral part of gas-liquid interface and primary blades.
Therefore, in this draining pump, even under the situation about changing in the position that causes gas-liquid interface because of SEA LEVEL VARIATION, the running noise in the time of also reducing low lift.
The present invention's six draining pump has: housing, be provided with the draining suction port that is used for suction drain in the underpart of this housing, and be provided with the draining exhaust port that is used to discharge draining at the sidepiece of this housing; Impeller has: the axial region that extends configuration in described housing along Vertical direction; Be configured in the primary blades of described axial region outer circumferential side; Be configured in the auxiliary blade of described primary blades downside; Be configured between described primary blades and the described auxiliary blade and be provided with the discoid tray portion of opening in central authorities; Described tray portion also has the ring-type separating part that extends upward from the outer periphery portion of this tray portion; It is characterized in that the interior perimembranous of described primary blades is configured in the position higher than the upper end portion of described separating part, and the outer periphery portion of described primary blades is configured in the position lower than the upper end portion of described separating part.
In such draining pump, owing to can improve the gas-liquid interface of mitigation primary blades peripheral part and the effect of the collision between the primary blades, therefore, the running noise in the time of further being reduced in low lift and low water level.
The present invention's seven air bells conditioner has: heat exchanger; Drainage tray is used for accumulating in the draining that this heat exchanger produces; And, one of the present invention that the draining that accumulates in the drainage tray is discharged～each described draining pump of six.
In this air bells conditioner, owing to when discharge accumulates in draining in the drainage tray, used the little draining pump of running noise when low lift, thereby, can reduce the noise of air bells conditioner integral body.
Description of drawings
Fig. 1 is near the enlarged view the pump case of the related draining pump of expression the present invention the 1st mode of execution.
Fig. 2 is the planimetric map (having omitted motor and housing lid among the figure) of the related draining pump of the present invention's the 1st mode of execution.
Fig. 3 is illustrated under the condition of various water levels and lift, the plotted curve of the measured value of draining pump monomer running noise.
Fig. 4 is the plotted curve of the lift measured value under the various rotating speeds of expression.
Fig. 5 is near the enlarged view the pump case of the related draining pump of expression the present invention the 2nd mode of execution.
Fig. 6 is the planimetric map (having omitted motor and housing lid among the figure) of the related draining pump of the present invention's the 2nd mode of execution.
Fig. 7 is near the enlarged view the pump case of the related draining pump of expression the present invention the 3rd mode of execution.
Fig. 8 is the planimetric map (diagram has been omitted motor and housing lid) of the related draining pump of the present invention's the 3rd mode of execution.
Fig. 9 is the side view of the related draining pump impeller of another mode of execution of the present invention.
Figure 10 is the side view of the related draining pump impeller of another mode of execution of the present invention.
Figure 11 is the side view of the related draining pump impeller of another mode of execution of the present invention.
Figure 12 is the side view of the related draining pump impeller of another mode of execution of the present invention.
Figure 13 is the side view of the related draining pump impeller of another mode of execution of the present invention.
Figure 14 is the stereoscopic figure of ceiling flush type air bells conditioner.
Figure 15 is the summary sectional side view of ceiling flush type air bells conditioner, is the A-A sectional drawing of Figure 16.
Figure 16 is the summary section plan of ceiling flush type air bells conditioner, is the B-B sectional drawing of Figure 15.
Figure 17 is the side view (illustrating the section of pump case) of existing draining pump.
Figure 18 is near the enlarged view the pump case of expression Figure 17.
Figure 19 is the planimetric map (having omitted motor and housing lid among the figure) of existing draining pump.
Figure 20 is the side view of impeller of the draining pump of another conventional example.
Label declaration
1: air bells conditioner, 6: heat exchanger, 7: drainage tray,
8,108,208: draining pump, 81: pump case (housing),
81a: the draining suction port, 81b: the draining exhaust port,
82,182,282: impeller, 91: axial region,
92,192,292: primary blades, 93: tray portion,
93a: opening portion (opening), 93b: separating part,
94: auxiliary impeller, H1: blade height, H2: pallet height
Embodiment
Below, with reference to the accompanying drawings, draining pump of the present invention is described and has the mode of execution of the air bells conditioner of this draining pump.
(the 1st mode of execution)
(1) draining pump structure and action
Fig. 1 and Fig. 2 represent that air bells conditioner 1 is (with reference to the draining pump 8 of employed the present invention's the 1st mode of executions such as Figure 14～Figure 16).Here, Fig. 1 is near the enlarged view the pump case 81 of the related draining pump 8 of expression the present invention the 1st mode of execution.Fig. 2 is the planimetric map (having omitted motor 83 and housing lid 85 in the diagram) of the related draining pump 8 of the present invention's the 1st mode of execution.In addition, except impeller 82, draining pump 8 has the structure identical with existing draining pump 308, therefore, omits its explanation.
The height and position of the 1st blade 95 upper end portions (below, as shown in Figure 1, from the height of the upper end portion of upper-end surface to the 1 blade 95 of opening portion 93a and the 2nd blade 96 as blade height H1), except the rake 95a that forms at its peripheral part, has identical height from perimembranous in it to peripheral part.In addition, the blade height H1 of the upper end portion of the 2nd blade 96 except the rake 96a that forms on the peripheral part, has the height identical with the 1st blade 95 from perimembranous in it to peripheral part.But the same with the primary blades 392 of existing draining pump 308, when seeing impeller 82 from the side, except the rake 96a of primary blades 92, primary blades 92 is upwards more side-prominent than the upper end portion (specifically, pallet height H2) of separating part 93b.
In addition, rake 95a, 96a are that the part by the peripheral part that cuts the 1st blade 95 and the 2nd blade 96 forms, and have along with near outer periphery portion, and blade height H1 is the tilted shape of step-down gradually.In addition, the outer periphery portion of rake 95a, 96a is configured in than on the low position, the upper end portion of separating part 93b.
In addition, rake 95a, 96a are cut into: make the external diameter of the 1st blade 95 and the 2nd blade 96 littler than the outside dimension D of separating part 93b, in addition, make the external diameter of the 1st blade 95 and the 2nd blade 96 littler than the inner peripheral surface diameter d of separating part 93b.Therefore, the outer periphery portion of the 1st blade 95 and the 2nd blade 96 is configured in than separating part 93b inner peripheral surface one side in more close interior week.In addition, as shown in Figure 1, rake 95a, 96a can be the shapes that straight line tilts, and also can be the tilted shapes that is curved surface.
In the draining pump 8 with the primary blades 92 that forms this rake 95a, 96a, the same with the inside of the main part 84a of existing draining pump 308, along with the reduction of water level h, air layer is concentric circles with the axial region 91 with primary blades 92 and enlarges.Particularly when low lift, the gas-liquid interface of air and water (with reference to the gas-liquid interface Y of Fig. 1 and Fig. 2) expands the high peripheral part of peripheral velocity to.
But, in draining pump 8, because the peripheral part in primary blades 92 is formed with rake 95a, 96a, therefore the peripheral part of primary blades 92 is configured in the position lower than the upper end portion of separating part 93b, the peripheral part of primary blades 92 and the collision between the gas-liquid interface Y can be relaxed, thereby primary blades 92 agitation air layers can be reduced and the running noise that produces.
In addition, because the part that disposes on than low position, the upper end portion of separating part 93b, be peripheral velocity height and, therefore, can relax near the outer periphery portion of primary blades 92 gas-liquid interface Y and the collision between the primary blades the outer periphery portion of the big primary blades 92 of running noise influence; And, in interior perimembranous, reduce to relax the effect of the collision between gas-liquid interface and the primary blades to the smaller primary blades 92 of running noise influence, can send the useful area of water work done to guarantee primary blades 92.And then the discharge flow rate that can suppress draining pump 8 reduces, and can suppress the reduction of pump performance to greatest extent.
In addition, in draining pump 8, because the outer periphery portion of primary blades 92 is configured in than the more close interior all sides of the inner peripheral surface of the separating part 93b of tray portion 93, therefore can be relaxed the gas-liquid interface Y of primary blades 92 outer periphery portions and the effect of the collision between the primary blades 92 reliably.
And, in draining pump 8, because the blade height H1 of primary blades 92 peripheral parts is along with near outer periphery portion step-down gradually, therefore at the peripheral part of primary blades 92, be easy to guarantee that primary blades 92 can send the useful area of water work done, thereby can further suppress the reduction of the pump performance of draining pump 8.
So, in such draining pump 8, in the reduction that suppresses pump performance, can reduce the running noise when low lift.And, during owing to the draining in the drainage tray 7 that lodges in air bells conditioner 1 in discharge, use such draining pump that running noise is little when low lift 8, therefore can reduce the noise of air bells conditioner 1 integral body, the gas fan 4 of air bells conditioner 1 for the situation of low air quantity or air conditioning chamber in quietly under the situation, be not easy to produce the problem that influences mood because of the draining pump running noise.
(2) experimental example
The following describes the draining pump 8 with primary blades 92 and have the draining pump 308 of existing primary blades 392 and the experimental result that the lift of one of the running noise of draining pump monomer and pump performance is surveyed, above-mentioned primary blades 92 has rake 95a, the 96a of present embodiment.Here, Fig. 3 be illustrated under the condition of various water levels and lift, the plotted curve of the measured value of draining pump monomer running noise.Fig. 4 is the plotted curve that is illustrated in the lift measured value under the various rotating speeds.In addition, as existing draining pump, prepare as shown in figure 18 draining pump with primary blades of not being with rake (following) and draining pump as shown in figure 20 (below regard conventional example 2 as) with primary blades of being with rake 395a, 395b as conventional example 1, carried out the actual measurement of running noise and lift, above-mentioned rake 395a, 395b only be formed on primary blades on the part of separating part 93b upper end portion upside.
In the draining pump of conventional example 1, as shown in Figure 3, under the condition of low water level and low lift, running noise maximum (about 46dBA), under the condition of high water level and low lift, running noise is reduced to and is about 43dBA, when lift further becomes big, present running noise and be reduced to tendency about 30dBA.In addition, about lift, as shown in Figure 4,, present the tendency that the upper right corner raises along with the increase of rotating speed.In addition, in the draining pump of conventional example 2, as shown in Figure 3, though compare with conventional example 1, improved the running noise under the condition of low water level and low lift, but under the condition of low water level and low lift, running noise is big (about 42dBA) still, under the condition of high water level and low lift, running noise is reduced to and is about 40dBA, when lift further increases, presents running noise and is reduced to tendency about 30dBA.
On the other hand, in the draining pump 8 of present embodiment, as shown in Figure 3, under the condition of low water level and low lift, running noise is than the running noise of the draining pump of conventional example 1 and conventional example 2 little (about 32dBA), under the condition of high water level and low lift, running noise is increased to and is about 37dBA (still, under the same conditions, little than the draining pump running noise of conventional example 1 and conventional example 2), when lift further becomes big, present running noise and be reduced to tendency about 30dBA.In addition, about lift, as shown in Figure 4, though slightly littler than the draining lift of pump of conventional example 1,,, present the tendency that the upper right corner raises along with the increase of rotating speed.
Here, under low water level and low lift condition, the reason that running noise is littler than the draining pump running noise of conventional example 1 is, as mentioned above, because be formed with rake 95a, 96a at the peripheral part of primary blades 92.In addition, be that the shape of formed rake is different on formed rake 95a, 96a on the primary blades 92 of the draining pump 8 of present embodiment and primary blades at the draining pump of conventional example 2 than the little reason of running noise of the draining pump of conventional example 2.Specifically, its reason is, formed rake 95a, 96a on the primary blades 92 of the draining pump 8 of present embodiment, its outer periphery portion is configured in the position lower than the upper end portion of separating part 93b, but, formed rake 395a, 395b on the primary blades of the draining pump of conventional example 2, only on the part of separating part 93b upper end portion upside, forming in above-mentioned primary blades.And, in the draining pump 8 of present embodiment, because the outer periphery portion of primary blades 92 is configured in than the separating part 93b inner peripheral surface of tray portion 93 side in more close interior week, therefore, can infer, can improve the gas-liquid interface Y of the outer periphery portion that relaxes primary blades 92 and the effect of the collision between the primary blades 92.In addition, under the condition of high water level and low lift, the reason that running noise increases is that the interior perimembranous of primary blades 92 is identical with the shape of the draining pump primary blades 392 of conventional example 1 and conventional example 2.
About lift, owing on primary blades 92, be formed with rake 95a, 96a, therefore primary blades 92 can send the useful area of water work done to become smaller slightly, but, owing to can guarantee the useful area of perimembranous in the primary blades 92, therefore, lift can remain on than on the smaller degree of the draining lift of pump of conventional example 1, and can suppress the reduction of the pump performance of draining pump 8 to greatest extent.
So, draining pump 8 as present embodiment, by the outer periphery portion of primary blades 92 is configured in the position lower than the upper end portion of separating part 93b, can suppress the reduction of pump performance, and when low lift, particularly under low lift operating condition and situation that the low water level operating condition overlaps, be confirmed to be and reduce running noise effectively.
(the 2nd mode of execution)
(1) draining pump structure and action
Fig. 5 and Fig. 6 show at air bells conditioner 1 (the related draining pump 108 of employed the present invention's the 2nd mode of execution in reference to Figure 14～Figure 16) etc.Here, Fig. 5 is near the enlarged view the pump case 81 of the related draining pump 108 of expression the present invention the 2nd mode of execution.Fig. 6 is the planimetric map (having omitted motor 83 and housing lid 85 among the figure) of the related draining pump 108 of the present invention's the 2nd mode of execution.In addition, except impeller 182, draining pump 108 has the structure identical with existing draining pump 308, therefore omits its explanation.
The height and position of the 1st blade 195 upper end portions (below, as shown in Figure 5, from the height of the upper end portion of upper-end surface to the 1 blade 195 of opening portion 93a and the 2nd blade 196 as blade height H1) form, along with near outer periphery portion (specifically from the inner circumference edge portion of the 1st blade 195, the upper end portion of separating part 93b outer periphery portion), blade height H1 is step-down gradually.That is,, and on the 1st blade 95 of the 1st mode of execution, only on peripheral part, form rake at the rake of the formation on the whole 195a of the 1st blade 195.In addition, the blade height H1 of the upper end portion of the 2nd blade 196 is the same with the 1st blade 195, along with from its inner circumference edge portion near outer periphery portion, blade height H1 is step-down gradually.That is, the 2nd blade 196 be formed with rake 196a on the whole, and on the 2nd blade 96 of the 1st mode of execution, only on peripheral part, form rake.In addition, the outer periphery portion of the 1st blade 195 and the 2nd blade 196, be configured in the upper end portion of separating part 93b (specifically, pallet height H2) on the position of equal height, the outer periphery portion of the 1st blade 195 and the 2nd blade 196 is configured in the position lower than the upper end portion of separating part 93b unlike rake 95a, the 96a of the 1st mode of execution.In addition, (specifically, the outer periphery portion from the outer circumferential face of axial region 91 to separating part 93b) forms from the inner circumference edge portion of primary blades 192 towards outer periphery portion for these rakes 195a, 196a, therefore, compare with rake 95a, the 96a of the 1st mode of execution, tilt relatively gentlyer.So, the 1st blade 195 and the 2nd blade 196, the blade height H1 on peripheral part is lower than the blade height of interior perimembranous.In addition, rake 195a, 196a can be the shapes that straight line as shown in Figure 5 tilts, and also can be the tilted shapes that is curved surface.
But, in draining pump 108, because the rake of formation on the whole 195a, 196a in primary blades 192, the blade height H1 of peripheral part is lower than the blade height of interior perimembranous, and can relax the collision between the peripheral part of gas-liquid interface Y and primary blades 192, thereby can reduce primary blades 192 agitation air layers and the running noise that produces.
And, when water level h rises, air layer dwindles (with reference to the gas-liquid interface X of Fig. 5 and Fig. 6), even at this moment wait, by the rake 195a, the 196a that form on the whole in primary blades 192, the collision between gas-liquid interface X and the primary blades 192 can be relaxed, and primary blades 192 agitation air layers can be reduced and the running noise that produces.
So, in such draining pump 108, no matter be that the gas-liquid interface of air and water expands under the situation of the high peripheral part of peripheral velocity when low lift; Still when low lift, water level rises, compare with the situation that water level is low, gas-liquid interface is positioned under the situation of perimembranous, can both relax the collision between gas-liquid interface and the primary blades 192, thereby, even under the situation about changing because of SEA LEVEL VARIATION in the position of gas-liquid interface, the running noise in the time of also reducing low lift.In addition, during owing to the draining in the drainage tray 7 that lodges in air bells conditioner 1 in discharge, use such draining pump that running noise is little when low lift 108, therefore can reduce the noise of air bells conditioner 1 integral body, the gas fan 4 of air bells conditioner 1 for the situation of low air quantity or air conditioning chamber in quietly under the situation, be not easy to produce the problem that influences mood because of the draining pump running noise.
(2) experimental example
Below, utilize Fig. 3 and Fig. 4, draining pump 108 with primary blades 192 and the draining pump 308 with existing primary blades 392 are described, to the experimental result that the lift of one of the running noise of draining pump monomer and pump performance is surveyed, above-mentioned primary blades 192 has rake 195a, the 196a of present embodiment.
As shown in Figure 3, the draining pump 108 of present embodiment, under the condition of low water level and low lift, running noise is littler than the running noise of the draining pump of conventional example 1 and conventional example 2, (about 36dBA, but, under the same conditions, running noise than the draining pump 8 of the 1st mode of execution is big), under the condition of high water level and low lift, running noise be reduced to be about 35dBA (and, under the same conditions, running noise than the draining pump 108 of the 1st mode of execution is little), when lift further becomes big, present running noise and be reduced to tendency about 30dBA.In addition, as shown in Figure 4, lift is than the draining lift of pump of conventional example 1 slightly little (still, being identical degree with the lift of the draining pump 108 of the 1st mode of execution), and along with the increase of rotating speed, is the tendency that the upper right corner raises.
Here, under low water level and low lift condition, the reason that running noise is littler than the draining pump running noise of conventional example 1 as mentioned above, is to be formed with rake 195a, 196a because of the peripheral part in primary blades 192.And running noise is than the big reason of running noise of the draining pump 8 of the 1st mode of execution, being rake 195a, 196a tilts gently than rake 95a, the 96a of the 1st mode of execution, and, primary blades 192 outer periphery portions are not configured in the position lower than the upper end portion of separating part 93b, relax the gas-liquid interface of primary blades 192 peripheral parts and the effect of the collision between the primary blades 192, be lower than rake 95a, the 96a of the 1st mode of execution slightly.Under the condition of low water level and low lift, the reason that running noise is littler than the running noise of the draining pump of conventional example 2 is, not only on the peripheral part of primary blades 192, and is formed with rake 195a, 196a on the whole in primary blades 192.In addition, under the condition of high water level and low lift, the reason that running noise reduces is, primary blades 92 is formed with rake 195a, 196a on the whole, different with the primary blades 92 of the primary blades of the draining pump of conventional example 1 and conventional example 2 and the 1st mode of execution draining pump 8, can obtain relaxing the effect of the collision of the gas-liquid interface of interior perimembranous of primary blades 192 and primary blades 192.
About lift, owing on primary blades 192, be formed with rake 195a, 196a, primary blades 192 can send the useful area of water work done smaller slightly, but, primary blades 92 be formed with rake 195a, 196a on the whole, its result, can guarantee the useful area of primary blades 192 peripheral parts, therefore, the same with the draining pump 8 of the 1st mode of execution, that is, lift only is in than on the smaller slightly degree of the draining lift of pump of conventional example 1, and can suppress the reduction of the pump performance of draining pump 108 to greatest extent.
So, draining pump 108 as present embodiment, by the rake of formation on the whole 195a, 196a in primary blades 192, can suppress the reduction of pump performance, not only when low lift and low water level, when low lift and high water level, also be confirmed to be and have the effect that reduces running noise, as a result, can obtain the little effect of variation of the running noise that the variation because of lift and water level causes.
(the 3rd mode of execution)
(1) draining pump structure and action
Fig. 8 and Fig. 7 show air bells conditioner 1 (with reference to related draining pumps 208 of employed the present invention's the 3rd mode of execution such as Figure 14～Figure 16).Here, Fig. 7 is near the enlarged view the pump case 81 of the related draining pump 208 of expression the present invention the 3rd mode of execution.Fig. 8 is the planimetric map (having omitted motor 83 and housing lid 85 among the figure) of the related draining pump 208 of the present invention's the 3rd mode of execution.In addition, except impeller 282, draining pump 208 has the structure identical with existing draining pump 308, therefore, omits its explanation.
Owing to be formed with jog 295a, therefore the height and position of the 1st blade 295 upper end portions is (as follows, as shown in Figure 7, from the height of upper-end surface to the 1 blade 295 of opening portion 93a and the 2nd blade 296 as blade height H1), the integral body from the inner circumference edge portion of the 1st blade 295 to outer periphery portion is with concavo-convex variation.In addition owing to be formed with jog 296a, the therefore blade height H1 of the 2nd blade 296 upper end portions, from the inner circumference edge portion of the 2nd blade 296 to outer periphery portion integral body with concavo-convex variation.
In the present embodiment, jog 295a, 296a are the pyramidal wave shape, and its outermost perimembranous has tilted shape (below be called rake 295b, 296b), along with near outer periphery portion, make blade height H1 step-down gradually.This rake 295b, 296b form by a part that cuts the 1st blade 295 and the 2nd blade 296 peripheral parts, and its outer periphery portion is configured in the low position, upper end portion (specifically, pallet height H2) than separating part 93b.
In addition, rake 295b, 296b are cut into: make the external diameter of the 1st blade 295 and the 2nd blade 296 littler and littler than the inner peripheral surface diameter d of separating part 93b than the outside dimension D of separating part 93b.Therefore, the outer periphery portion of the 1st blade 295 and the 2nd blade 296 is configured in than separating part 93b inner peripheral surface one side in more close interior week.In addition, the shape of jog 295a, 296a is not limited to present embodiment, can be rectangular wave shape or sine wave shape.
But, in draining pump 208, because the peripheral part in primary blades 292 is formed with jog 295a, 296a (specifically, rake 295b, 296b), make the outer periphery of primary blades 292 be configured in the position lower than the upper end portion of separating part 93b, and can relax the collision between the peripheral part of gas-liquid interface Y and primary blades 292, thus the same with the draining pump 8 of the 1st mode of execution, can reduce the running noise that produces because of primary blades 292 agitation air layers.
And, when water level h rises, air layer dwindles (with reference to the gas-liquid interface X of Fig. 7 and Fig. 8), but, even at this moment wait, as jog 295a, the 296a of present embodiment under situation about forming on primary blades 292 integral body, the same with the draining pump 108 of the 2nd mode of execution, by means of jog 295a, 296a, can relax the collision between gas-liquid interface X and the primary blades 292, and can reduce the running noise that produces because of primary blades 292 agitation air layers.
In addition, during owing to the draining in the drainage tray 7 that lodges in air bells conditioner 1 in discharge, used such draining pump that running noise is little when low lift 208, therefore, can reduce the noise of air bells conditioner 1 integral body, the gas fan 4 of air bells conditioner 1 for the situation of low air quantity or air conditioning chamber in quietly under the situation, be not easy to produce the problem that influences mood because of the draining pump running noise.
(other mode of executions)
More than, though with reference to the accompanying drawings, embodiments of the present invention have been described,, concrete structure is not limited to these mode of executions, without departing from the spirit and scope of the present invention, can change.
The variation of (1) the 1st mode of execution
In the draining pump 8 of the 1st mode of execution, constitute the primary blades 92 of impeller 82, because it is littler than separating part 93b inner peripheral surface diameter d that rake 95a, 96a are cut into, therefore the outer periphery portion of the 1st blade 95 and the 2nd blade 96 is configured in than the inner peripheral surface of separating part 93b one side in more close interior week.But as shown in Figure 9, rake 95a, 96a also can form, and its outer periphery portion is connected on the inner peripheral surface of separating part 93b.
Even in this case, because the outer periphery portion of the 1st blade 95 and the 2nd blade 96 is configured in the position lower than the upper end portion of separating part 93b, therefore, is speculated as, compare with the draining pump of conventional example 1 and conventional example 2, can reduce the running noise when low lift.
In addition, in the draining pump 8 of the 1st mode of execution, constitute the primary blades 92 of impeller 82, though having, rake 95a, 96a make blade height H1 along with near the peripheral portion tilted shape of step-down linearly, but as shown in figure 10, the part of the peripheral part of the 1st blade 95 and the 2nd blade 96 also can be the shape that cuts with polyline shaped, perhaps as shown in figure 11, the part of the 1st blade 95 and the 2nd blade 96 peripheral parts also can be the shape that vertically cuts as the crow flies.
Even in this case, because the outer periphery portion of the 1st blade 95 and the 2nd blade 96 is configured in the position lower than the upper end portion of separating part 93b, therefore, is speculated as, compare with the draining pump of conventional example 1 and conventional example 2, can reduce the running noise when low lift.
The variation of (2) the 2nd mode of executions
In the draining pump 108 of the 2nd mode of execution, constitute the primary blades 192 of impeller 182, because rake 195a, 196a form, from the inner circumference edge portion of the 1st blade 195 and the 2nd blade 196 (specifically to outer periphery portion, upper end portion in the outer periphery portion of separating part 93b), in primary blades 192 on the whole, blades height is step-down gradually, thereby can relax the collision between gas-liquid interface X, Y and the primary blades 192 reliably, and the running noise (with reference to Fig. 3) can be reduced in low lift the time.But, as shown in figure 12, the same with rake 95a, the 96a of the 1st mode of execution, also the outer periphery portion of rake 195a, 196a can be configured in than low position, separating part 93b upper end portion, simultaneously, rake 195a, 196a also can be cut into, and be shorter than separating part 93b inner peripheral surface diameter d.
In this case, owing to can improve the gas-liquid interface of mitigation primary blades 92 peripheral parts and the effect of the collision between the primary blades 92, therefore, be speculated as the running noise in the time of further to be reduced in low lift and low water level.
The variation of (3) the 3rd mode of executions
In the primary blades 292 of the formation impeller 282 of the draining pump 208 of the 3rd mode of execution, rake 295a, the part that 296a cuts the 1st blade 295 and the 2nd blade 296 peripheral parts in the following way forms: make the external diameter of the 1st blade 295 and the 2nd blade 296 littler than the outside dimension D of separating part 93b, and can relax the gas-liquid interface Y of primary blades 292 peripheral parts and the collision between the primary blades 292 reliably, running noise when being reduced in low lift and low water level significantly (with reference to Fig. 3), but, as shown in figure 13, rake 295a, 296a also can form, the part of the 1st blade 295 and the 2nd blade 296 peripheral parts is cut towards the outer periphery portion of separating part 93b, and need not make the outside dimension D of the external diameter of the 1st blade 295 and the 2nd blade 296 less than separating part 93b.
So, though it is little to relax the effect of gas-liquid interface on primary blades 292 peripheral parts and the collision between the primary blades 292, yet, be speculated as, also can obtain the effect that the running noise with draining pump 108 same degree of the 2nd mode of execution reduces.
According to the present invention, can reduce the running noise of the draining pump when low lift.
Claims (2)
1. draining pump has:
Housing is provided with the draining suction port that is used for suction drain in the underpart of this housing, be provided with the draining exhaust port that is used to discharge draining at the sidepiece of this housing;
Impeller has: the axial region that extends configuration in described housing along Vertical direction; Be configured in the primary blades of described axial region outer circumferential side; Be configured in the auxiliary blade of described primary blades downside; Be configured between described primary blades and the described auxiliary blade and be provided with the discoid tray portion of opening in central authorities;
Described tray portion also has the ring-type separating part that extends upward from the outer periphery portion of this tray portion;
It is characterized in that the interior perimembranous of described primary blades is configured in the position higher than the upper end portion of described separating part, and the outer periphery portion of described primary blades is configured in the position lower than the upper end portion of described separating part.
2. air bells conditioner has:
Heat exchanger;
Drainage tray is used for accumulating in the draining that described heat exchanger produces; And
The draining pump of claim 1 record of the draining discharge in the described drainage tray will be accumulated in.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003406758 | 2003-12-05 | ||
| JP2003-406758 | 2003-12-05 | ||
| JP2004050132A JP3711998B2 (en) | 2003-12-05 | 2004-02-25 | Drain pump and air conditioner equipped with the same |
| JP2004-050132 | 2004-02-25 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480012906.XA Division CN1788165B (en) | 2003-12-05 | 2004-11-30 | Drain pump and air conditioner with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101294579A true CN101294579A (en) | 2008-10-29 |
| CN101294579B CN101294579B (en) | 2011-04-06 |
Family
ID=36785098
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480012906.XA Expired - Fee Related CN1788165B (en) | 2003-12-05 | 2004-11-30 | Drain pump and air conditioner with the same |
| CN2008101102401A Expired - Fee Related CN101294579B (en) | 2003-12-05 | 2004-11-30 | Drain pump, and air conditioner provided therewith |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480012906.XA Expired - Fee Related CN1788165B (en) | 2003-12-05 | 2004-11-30 | Drain pump and air conditioner with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN1788165B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087207A (en) * | 2020-08-24 | 2022-02-25 | 浙江三花商用制冷有限公司 | Fluid discharge device |
| CN114688083A (en) * | 2022-04-28 | 2022-07-01 | 宁波方太厨具有限公司 | Blade, impeller with blade, fan system and range hood |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6374150B2 (en) * | 2013-09-10 | 2018-08-15 | 株式会社鷺宮製作所 | Low head small drain pump |
| JP6001709B2 (en) * | 2015-02-26 | 2016-10-05 | 株式会社鷺宮製作所 | Drain pump |
| JP6375285B2 (en) * | 2015-11-18 | 2018-08-15 | 株式会社不二工機 | Drainage pump |
| WO2020194555A1 (en) * | 2019-03-26 | 2020-10-01 | 東芝キヤリア株式会社 | Indoor unit of air conditioner |
| CN114962346A (en) * | 2022-06-29 | 2022-08-30 | 江西镁淇实业有限公司 | Efficient treatment chamber for textile manufacturing process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3580329B2 (en) * | 1995-08-29 | 2004-10-20 | 株式会社不二工機 | Drainage pump |
| JP4267118B2 (en) * | 1999-01-27 | 2009-05-27 | 株式会社不二工機 | Drainage pump |
-
2004
- 2004-11-30 CN CN200480012906.XA patent/CN1788165B/en not_active Expired - Fee Related
- 2004-11-30 CN CN2008101102401A patent/CN101294579B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087207A (en) * | 2020-08-24 | 2022-02-25 | 浙江三花商用制冷有限公司 | Fluid discharge device |
| CN114688083A (en) * | 2022-04-28 | 2022-07-01 | 宁波方太厨具有限公司 | Blade, impeller with blade, fan system and range hood |
| CN114688083B (en) * | 2022-04-28 | 2023-02-28 | 宁波方太厨具有限公司 | Blade, impeller applying same, fan system and range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1788165B (en) | 2011-04-13 |
| CN1788165A (en) | 2006-06-14 |
| CN101294579B (en) | 2011-04-06 |
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