CN1015574B - Adjustable device for flow - Google Patents

Abstract

The present invention relates to a flow rate regulating device 50 which comprises an element 52 forming a chamber, wherein the element 52 is covered by an elastic material tube 54, and the element 52 and the elastic material tube 54 form a flowing path from an inlet 60 to an outlet 62. The flowing path forms a first flowing chamber 56.1 and a second flowing chamber 56.2 which are composed of elastic tubes. The first flowing chamber 56.1 and the second flowing chamber 56.2 are made into a type that the tubes deviate inwards when fluid flows through each chamber so as to reduce the flowing cross section of each chamber.

Description

Adjustable device for flow

The present invention relates to flow regulator.The flow regulator that particularly relates to the fluid stream that is used for regulating the fluid source that changes from pressure.

Flow regulator can be used for a lot of fields.For example, can be used for irrigation system to regulate the current of each sprinkler head in this system or jetting device.The shortcoming of these systems is that the hydraulic pressure of each sprinkler head depends on several factors, and for example, this sprinkler head is from the distance of water main, guides to flow rate the arm of this sprinkler head and the height of sprinkler head (on the soil of slope or fluctuating) from water main.If neither one flow regulation on each sprinkler head, the flow rate of each sprinkler head will differ greatly, and this does not wish to occur significantly.

The example of another energy use traffic regulating device is the domestic hot water system, wherein usually is provided with mixing valve and comes to come mixed hot water and cold water to obtain temperature required water by giving certainty ratio.The pressure surge of hot water or cold water is directed at this ratio fluctuation, causes water temperature that undesirable fluctuation takes place.If used flow regulator, just can reduce to minimum to the undesirable fluctuation of water temperature.

According to the present invention, a kind of flow regulator is provided, it includes the formation import, outlet and a device that is directed at the stream of outlet from import, this stream forms a first-class chamber and flows the chamber in second of downstream, first-class chamber, first-class chamber is formed by one first wall that can flexibly be offset at least in part, this wall is to come configuration like this, make its interior circulation section that has dwindled first-class chamber to skew to first-class chamber, the second stream chamber is formed by one second wall that can flexibly be offset at least in part, this wall is to come configuration like this, makes its interior circulation section that has dwindled the second stream chamber to skew to the second stream chamber.

Described device is plenum chamber of side formation outside the wall of first and second resiliently deflectables further, and this plenum chamber follow-up mouthful fluid is communicated with.

The structure of this flow regulator can be such, and promptly when the wall of first and second resiliently deflectables was in their non-migration state, the circulation section of first-class chamber was little than the second stream chamber.

Each wall that can be offset can be formed by the film of elastomeric material.

This device can contain a member that forms the chamber, two outwardly open depressions are wherein arranged, these walls that can be offset are by forming with the elastomeric material pipe that covers each depression round this member, and respectively this chamber is formed by a corresponding depression and that part of elastomer tube that covers it.

The structure of flow regulator can be such, promptly in use, has at least one to produce eddy current in these stream chambers.Like this, having a stream chamber at least can be short-coarse cylinder shape, and the wall that can be offset accordingly forms an end of respective streams chamber, and this stream tangentially enters corresponding stream chamber, and stream axially leaves corresponding stream chamber.

At least the part streams beyond the formation first and second stream chambers can be taked tortuous flow path.

That part of stream that is directed at the second stream chamber from first-class chamber can be taked tortuous flow path.

The present invention may extend to the irrigation jetting device that includes as above-mentioned flow regulator.

The present invention now describes in detail with reference to accompanying drawing by embodiment.Wherein:

Fig. 1 is the planimetric map of partly vertically cutting open according to the flow regulator of first embodiment of the invention;

Fig. 2 be among Fig. 1 along the section of II-II line, magnification ratio draws;

Fig. 3 be among Fig. 1 along the section of III-III line, draw with the ratio identical with Fig. 2;

Fig. 4 is the vertical view according to the member of the formation chamber of the flow regulator of second embodiment of the invention;

Fig. 5 is that flow regulator also illustrates an elastomer tube that forms the part of this device along the section of V-V line among Fig. 4;

Fig. 6 is that flow regulator among Fig. 4 is along the longitudinal profile of VI-VI line;

Fig. 7 is the planimetric map according to the member of the formation chamber of the flow regulator of third embodiment of the invention;

Fig. 8 be flow regulator among Fig. 7 along the longitudinal profile of VIII-VIII line, the elastomer tube on member in place also is shown;

Fig. 9 be among Fig. 8 along the section of IX-IX line, magnification ratio draws;

Figure 10 be among Fig. 8 along the section of X-X line, draw with the ratio identical with Fig. 9;

Figure 11 is along the section of XI-XI line, to draw with Fig. 9 ratio identical with Figure 10 among Fig. 8;

Figure 12 illustrates the flow regulator according to fourth embodiment of the invention, and part is vertically cut open;

Figure 13 is along the section of X III-X III line among Figure 12;

Figure 14 is a vertical view that forms the member of chamber according to the flow regulator of fifth embodiment of the invention, and (with the longitudinal profile) elastomer tube that forms the part of this device also is shown;

Figure 15 is the backplan of member of the formation chamber of Figure 14;

Figure 16 is along the sectional view of X VI-X VI line among Figure 14 and Figure 15.

At first referring to Fig. 1 to 3, label 10 is flow regulators, and it includes shell 12, at an end of shell 12 a threaded extremity piece 14 is arranged, and at the other end of shell 12 a threaded extremity piece 16 is arranged.Extremity piece 14 has an inlet passage 18 to be directed at shell 12 inside from import 20, and extremity piece 16 has an exit passageway 22, is directed at outlet 24 from shell 12 inside.Extremity piece 16 has a joint 25 to stretch into shell 12 inside, is connecting the member 26 that forms the chamber on joint.Member 26 includes the ring set of a metal or plastic material, and it is made into hourglass shape as shown in fig. 1.Elastomeric material pipe 28 slides over member 26 outsides, and an end is pressed on the joint 25.The diameter of joint 25 is than the normal internal diameter bigger (internal diameter when promptly pipe loosens) of pipe 28, so an end of pipe is slightly enlarged and is close on the joint.At label 30 places, two offsides of member 26 form waist, and leave an end 32 places of joint 25 at member, and the distance between two offsides of member 26 is substantially equal to the normal internal diameter of pipe 28.In the zone between joint 25 and waist 30, and waist 30 and holding in the zone between 32, the distance between two offsides of member 26 is greater than the normal internal diameter of pipe 28.It is flat that this just will manage 28 supports, forms two flat stream chambers, i.e. a first-class chamber 34.1 and second a stream chamber 34.2 near joint 25 near end 32.Two Room 34.1 are all formed by two walls 36 relative, resiliently deflectable respectively with 34.2.In end 32, waist 30 and joint 25 these zones, it is circular basically that the section of pipe 28 keeps.

Flow regulator 10 is used in the irrigation system.During use, extremity piece 14 is connected to pressure water source, and extremity piece 16 is connected to the flusher (not shown).Water enters shell 12 from the water source through import 20 and path 18.From here, it by chamber 34.1 and 34.2, arrives the openend of inflow pipe 28 in flusher through path 22 and outlet 24 then.The space inboard and that manage between 28 outsides of shell 12 forms plenum chamber or hole 38, and it and import 20 are communicated with, and therefore are subjected to the pressure at water source.

The state anhydrous when mobile in device, that pipe 28 will be as shown in Fig. 2 and 3, the pressure in the outside equates in the pipe 28.

When current through the chamber 34.1 and 34.2 the time, the pressure in the chamber 34.1 and 34.2 will descend with respect to the static pressure in hole 38 according to the sharp principle of known venturi.This makes wall 36 to bias internal, and is adjacent to each other, thereby has dwindled the circulation section of chamber 34.1 and 34.2.Chamber 34.1 dwindling of circulation section will be limited the current that lead to outlet 24, cause the pressure in the chamber 34.2 further to reduce.Dwindling and the current of restricted passage chamber 34.1 of the circulation section of chamber 34.2 will be increased the pressure in the chamber 34.1 like this.The two relative walls 36 that will make first Room 34.1 that increase of the pressure in the chamber 34.1 move outward once more.Stream chamber 34.1 and 34.2 this resonant dwindle and enlarge regulating the current that pass through device 10, thereby when the hydraulic pressure of import 20 changes on a large scale, can also keep the flow rate substantially constant.

Be appreciated that can and manage 28 with joint 25, member 26 is arranged in the water main, only termination case 16 picked out that in the case, shell 12 and termination case 14 can save.

Referring now to Fig. 4 to 6,, label 50 is flow regulators, and it includes the member 52 and the elastomeric material pipe 54 on member 52 in place that form the chamber.Member 52 has the section of rectangle haply, and is formed with two depressions 56.1 and 56.2 on two opposite faces.Have a perforate 58 from cave in 56.1 extend to the depression 56.2.In addition, there is a groove 60 to import depression 56.1, and a path 62 arranged from 56.2 other ends that are directed at member that cave in from an end of member 52.

When pipe 54 on member 52 when in place, it will cave in and 56.1 form first-class chambers and will cave in and 56.2 form the second stream chamber, it is also with the inlet passage of a first-class chamber of importing of groove 60 formation.

As seen, the degree of depth of depth ratio second depression 56.2 of first depression 56.1 is little from Fig. 5 and 6, thereby the circulation section of first-class chamber will be less than the circulation section of the second stream chamber.In examples of implementation, second depression, 56.2 the degree of depth approximately is 1.7 times of the degree of depth of first depression 56.1.

The work of flow regulator 50 is identical with the device shown in Fig. 1 to 3 10.This device is arranged to like this, makes the outside of pipe 54 bear source pressure.Current enter first-class chamber 56.1 through inlet passage 60, enter the second stream chamber 56.2 by perforate 58 from here, pass through exit passageway 62 more from here to (for example) flusher.Current by first-class chamber 56.1 will make the pressure in the first-class chamber descend.This will make again by the bottom of the wall 64 of managing 54 resiliently deflectables that form towards depression 56.1 and curve inwardly, thereby dwindle the circulation section of first-class chamber.Equally, the current by the second stream chamber 56.2 will make the wall 66 by pipe 54 resiliently deflectables that form curve inwardly towards depression 56.2 bottom, thereby dwindle the second circulation section that flows the chamber.

Referring now to Fig. 7 to 11,, the flow regulator 70 that illustrates includes one and forms the member 72 of chamber and elastomeric material pipe 74 in place on member 72.Member 72 has a center necklace 76, in a side of necklace 76 four longitudinally extending grooves 78.1 that are spaced apart along periphery is arranged, and at the opposite side of necklace 76 four longitudinally extending grooves 78.2 that are spaced apart along periphery is arranged.Groove 78.2 slightly is deeper than groove 78.1.Groove 78.1 each slit 80 and corresponding groove 78.2 that all pass through on the necklace 76 are communicated with.

When on member 72 when in place, pipe 74 forms a first-class chamber with each groove 78.1, and each groove 78.2 is formed one second stream chamber, and the circulation section of stream chamber 78.1 is slightly less than the circulation section of stream chamber 78.2.

The work of flow regulator 70 is identical with flow regulator 50 in being shown in Fig. 4 to 6, and its difference is in now has four parallel streams, each stream to include a first-class chamber 78.1, corresponding slit 80 and the corresponding second stream chamber 78.2.

Referring now to Figure 12 and 13,, a member 90 that forms the chamber is shown, it is similar to the member 52 shown in Fig. 4 to 6 in some respects, and same or corresponding part is denoted by the same reference numerals.In member 90, groove 60 tangentially enters depression 56.1.In addition, perforate 58 is not directly stretched in the depression 56.2 but is imported in one second groove 92 on the opposite of member 90, and second groove tangentially imports in the depression 56.2 again.At last, path 62 is not radially derived from 56.2 the side of caving in, but the central opening 94 from 56.2 the bottom of caving in is derived.When elastomer tube 54 was in place on member 90, it formed groove 92 stream that is directed at stream chamber 56.2 from stream chamber 56.1.Label 96 expression shells (omitting among Figure 13) wherein are equipped with member 90, can be connected to water main to this device from here.It is to make the current by first and second Room 56.1 and 56.2 produce eddy current that inlet passage is arranged to tangentially enter the effect that respectively flows chamber 56.1 and 56.2.This will limit current to a greater degree than the structure shown in Fig. 4 to 6.The structure that in Figure 12 and 13, shows thereby can be applied to only to need to hang down the occasion of flow rate.For example perhaps can be applied in the drip irrigation appliance, the stream that this device only needs reduced size is with by less flow, but less stream is stopped up by the external foreign material in supplying water easily, thereby has to adopt the device of large-size.

Referring now to Figure 14 to 16,, a member 100 that forms the chamber is shown, it is similar to the member 90 shown in Figure 12 and 13 in some respects, and same or corresponding part is denoted by the same reference numerals.In member 100, depression 56.1 and 56.2 all be disposed in member same (on) on the side.The perforate 58 of deriving from 56.1 the center of caving in is directed at the opposite side of member 90, enters first zigzag channel that is being communicated with perforate 58 and depression 56.2.Zigzag channel is formed by each groove that is covered by elastomer tube 54 on the member 100.The first of zigzag channel is formed by the groove 102.1 that is positioned at member 100 downsides, and groove 102.1 is divided into two strands, separates after converging again, and imports in each groove 102.2 of the horizontal relatively side of member two.Each groove 102.2 imports the groove 102.3 that is arranged in the member upside, and groove 102.3 has two strands, separates after they converge again, and imports in each groove 102.4 of the horizontal relatively side of member two.Each groove 102.4 imports the groove 102.5 that is arranged in the member bottom side, and groove 102.5 has two strands, and they converge and import the groove 102.6 that is arranged in a horizontal side of member.Groove 102.6 is directed at the upside of member, and it tangentially enters second depression 56.2 from here.The center drilling 94 of deriving from second depression 56.2 enters second zigzag channel that is formed by the groove 104 that is arranged in the element downside, and groove 104 has two strands, and it converges and imports in the perforate 106.Perforate 106 is directed at outlet 62 again.Zigzag channel allows can obtain lower flow rate and don't cause the circulation section of stream too narrow in the design.

Have vertical wall though stream chamber 56.1 and 56.2 all illustrates, discovery is provided with the chamber of skew wall can improve flow regulation, so the size of each chamber reduces along leaving each direction that can be offset wall.

The suitable work of flow regulator of the present invention is decided by respectively to flow the sensitivity of chamber, and in other words, promptly the circulation section of each chamber reduces and makes the degree that increases by their flow rate.Sensitivity especially is decided by to be offset the span of wall and the degree of depth of chamber.Therefore, the ratio of the span of chamber and the degree of depth is the appraisal of sensitivity.The chamber of upstream should be sensitiveer than the chamber in downstream, and between upstream chamber sensitivity and downstream chamber's sensitivity a correct ratio should be arranged.This available spline fit method draws optimum value.For example, earlier the degree of depth of upstream chamber is adjusted until drawing required flow rate.Subsequently, can adjust the degree of depth of downstream chamber until drawing required flow regulation.

These two stream chambers do not need to separate with the wall of entity as can be seen, and can be at work by pipe form two walls that can be offset independently, two parts in another downstream form.

Claims (9)

1, a kind of flow regulator, it comprises contains import (20 of formation, 60), an outlet (24,62) and a device that is directed at the stream of outlet from import, this stream is formed by a wall that can flexibly be offset at least in part, it is characterized in that this stream forms a first-class chamber (34.1,56.1,78.1) and second a stream chamber (34.2 that is positioned at downstream, first-class chamber, 56.2,78.2), first-class chamber is at least in part by one first wall that can flexibly be offset (36,54,64,74) form, this wall is configured to and makes its bias internal to first-class chamber dwindle the circulation section of first-class chamber, the second stream chamber is at least in part by one second wall that can flexibly be offset (36,54,66,74) form, this wall is configured to and makes its interior circulation section that has dwindled the second stream chamber to skew to the second stream chamber.

2, by the flow regulator of claim 1, it is characterized in that described device further forms a plenum chamber (38) in the outside of first and second walls that can flexibly be offset, this plenum chamber follow-up mouthful fluid is communicated with.

3, by claim 1 or 2 flow regulator, it is characterized in that it being configured to the circulation section that makes first-class chamber (56.1), to flow the circulation section of chamber (56.2) than second when first and second walls that can flexibly be offset are in their non-migration state little.

4, by the flow regulator of claim 1 or 2, it is characterized in that each described wall that is offset is formed by the film of an elastomeric material.

5, press the flow regulator of claim 4, it is characterized in that described device includes a member (52,72,90,100) that forms the chamber, two outwards open depressions (56.1,56.2,78.1,78.2) are wherein arranged, these walls that can be offset are by forming around the pipe (54,74) of this member with the elastomeric material that covers each depression, and respectively cave in accordingly by one and that part of elastomer tube that covers it is formed in this chamber.

6,, it is characterized in that it is configured to make it in these stream chambers, have at least one to produce eddy current in use by claim 1 or 2 flow regulator.

7, press the flow regulator of claim 6, it is characterized in that in these stream chambers, having at least one to be short-coarse cylinder shape, the wall that can be offset accordingly forms an end of respective streams chamber, and this stream tangentially enters corresponding stream chamber, and this stream axially leaves corresponding stream chamber.

8,, it is characterized in that the part streams (102.1 to 102.2,104) beyond the formation first and second stream chambers are taked tortuous flow path at least by the flow regulator of claim 1 or 2.

9,, it is characterized in that being directed at the second that part of stream (102.1 to 102.6) that flows the chamber from first-class chamber takes tortuous flow path by the flow regulator of claim 8.

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