CN103161990B - Solenoid valve - Google Patents
Solenoid valve Download PDFInfo
- Publication number
- CN103161990B CN103161990B CN201210509517.4A CN201210509517A CN103161990B CN 103161990 B CN103161990 B CN 103161990B CN 201210509517 A CN201210509517 A CN 201210509517A CN 103161990 B CN103161990 B CN 103161990B
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- Prior art keywords
- helical spring
- solenoid valve
- spring
- plunger
- attractor
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- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 17
- 238000004804 winding Methods 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 12
- 239000012530 fluid Substances 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
- F16K31/0658—Armature and valve member being one single element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/10—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with additional mechanism between armature and closure member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
- Springs (AREA)
- Fluid-Driven Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention provides and a kind ofly possess helical spring and can the solenoid valve of reliably action, this helical spring is difficult to generation and buckles, because buckling, the side-play amount caused diminishes, and can prevent spring from stretching out from spring mounting hole, can prevent spring from sandwiching between attractor and plunger when being energized.This solenoid valve possesses: utilize the energising of electromagnetic coil (18) to carry out moving and make the plunger (44) of valve body (12) action; The attractor (32) configured in the mode opposed with plunger (44); Be arranged on being formed between the spring mounting hole (50) of attractor (32) side and attractor (32) and the helical spring (48) afterburning to plunger (44) to valve seat (60) direction of plunger (44), the dense curling part that adjacent coiler part reels with the state be mutually close to be set at the intermediate portion of helical spring (48) and divide (48a).
Description
Technical field
The present invention relates to solenoid valve, especially relate to and possess helical spring solenoid valve, between the spring mounting hole that this helical spring is arranged on the attractor side being formed at plunger and attractor, and afterburning to valve seat direction to plunger.
Background technique
In the past, such as, the guide electromagnetic valve possessing pilot valve is formed as shown in Figure 9.
That is, as shown in Figure 9, solenoid valve 100 possesses the control device 104 of the piston 102 had as main valve.In addition, the control device 104 of this solenoid valve 100 possesses the electromagnetic coil 108 inserted for drive portion 106.
And electromagnetic coil 108 is molded resin 112 with the bobbin 110 being wound with spiral in the mode of the surrounding surrounding bobbin 110 and is molded.Further, electromagnetic coil 108 is installed on the inside of magnet frame frame 114, is fixed on drive portion 106 by magnet frame frame 114.
That is, the drive portion patchhole 120 of the drive portion patchhole 118 that the central part that drive portion 106 is inserted in the base plate 116 of magnet frame frame 114 is formed and bobbin 110.And clamping bolt 130, via the bolt-inserting hole 128 of central part of upper plate portion 126 being formed at magnet frame frame 114, is screwed with the internal thread 124 on top of the attractor 122 being formed at drive portion 106.
Thus, electromagnetic coil 108 inserts and is fixed on drive portion 106, constitutes the control device 104 of solenoid valve 100.
In addition, drive portion 106 possesses plunger housing 132, also possesses the plunger 134 that can move up and down in this plunger housing 132.And be provided with helical spring 138 between attractor 122 and plunger 134, this helical spring 138 is by afterburning to piston 102 for the direction of plunger 134 downwards namely to valve seat 150.
That is, as shown in the enlarged view of Figure 10 (A), helical spring 138 is arranged between the spring mounting hole 140 being formed at the side of attractor 122 of plunger 134 and attractor 32.
In addition, Figure 10 expands helical spring 138 and illustrates with the gap of spring mounting hole 140.Illustrate state of buckling described later turgidly.
Further, solenoid valve 100 is configured to, and possesses valve body 142, and valve chamber 146 adduction being formed at upside valve body 144 is placed with piston 102, and piston 102 leaves the valve seat 150 that contact is formed at downside valve body 148.
In addition, at the middle body of this piston 102, be formed with the first guiding path 152 of up/down perforation, be provided with the pintle valve seat 154 as guide's valve seat on the top of this first guiding path 152.And in the lower end of plunger 134, projecting have the needle-valve body 156 as guide valve blocks leaving this pintle valve seat 154 of contact.
On the other hand, at downside valve body 148, be formed with the first side stream 158 of the inflow such as the fluid that such as makes refrigeration agent and the second side stream 160 for displacement fluids.
In addition, at downside valve body 148, valve port 162 is formed with at valve seat 150 as mentioned above.
And, be configured to: be formed with slit 164 in the periphery of piston 102, gap between the inwall utilizing the valve chamber 146 of this slit 164 and piston 102 and upside valve body 144, form the secondary stream 166 of ring-type, thus the valve chamber 146 of upside valve body 144 is communicated with first side stream 158 side.
Such solenoid valve 100 is cutting off under the state to the energising of electromagnetic coil 108, and plunger 134 utilizes the active force of helical spring 138 to move to the direction leaving attractor 122.
Thus, the needle-valve body 156 being formed at the lower end of plunger 134 moves to the direction abutted with the pintle valve seat 154 on top of the first guiding path 152 being formed at piston 102, thus closes first guiding path 152.
In addition, moved to the direction leaving attractor 122 by this plunger 134, piston 102 abuts with the valve seat 150 being formed at downside valve body 148, and the valve port 162 being formed at valve seat 150 is closed.
In this condition, as the fluid of on high-tension side first side stream 158 via the secondary stream 166 of periphery being formed at piston 102, flow into the valve chamber 146 of upside valve body 144, valve chamber 146 becomes high pressure, becomes piston 102 to the direction abutted with valve seat 150 by the state of reinforcing.
On the other hand, by being energized to the electromagnetic coil 108 of solenoid valve 100, the active force that plunger 134 overcomes helical spring 138 moves to attractor 122 direction.
Thus, the needle-valve body 156 being formed at the lower end of plunger 134 moves to the direction of pintle valve seat 154 on the top leaving the first guiding path 152 being formed at piston 102, and first guiding path 152 is opened.
Its result, is configured to: the high-pressure liquid in the valve chamber 146 of upside valve body 144, via first guiding path 152, is expelled to the second side stream 160 as low voltage side.Thus, the pressure drop in valve chamber 146, utilize with as the differential pressure of the fluid of on high-tension side first side stream 158, piston 102 to lift off a seat 150 direction move, valve port 162 is opened.
But, in such solenoid valve 100, in order to fully guarantee the flow flowed out from valve port 162, need to make the displacement distance (range of lift) of the piston 102 apart from valve seat 150 be enlarged to more than certain proportion relative to the bore of valve port 162, the solenoid valve that bore is larger, the displacement distance of piston 102 is larger.In addition, the displacement distance of piston 102 is larger, and the displacement distance of plunger 134 also needs similarly to increase, and in the occasion of the large solenoid valve of the displacement distance of such plunger 134, needs the helical spring 138 using lengthwise.
But as shown in Figure 10 (B), under the state that helical spring 138 compresses, helical spring 138 easily becomes the state of buckling.
Thus, by being energized to the electromagnetic coil 108 of solenoid valve 100, when the active force that plunger 134 overcomes helical spring 138 moves to attractor 122 direction, under the state that the active force overcoming helical spring 138 at plunger 134 abuts with attractor 122, the part 138a that buckles becoming this helical spring 138 sandwiches the state between plunger 134 and attractor 122.
Therefore, in such a state, there is plunger 134 and be not close to the situation of (absorption) with attractor 122.In this case, though exist piston 102 to lift off a seat 150 direction move, the worry of the state that valve port 162 also cannot be opened.
In addition, as shown in the dotted line of the expression stroke of Fig. 3 described later and the figure of load relationship, buckle if produce, then from the starting point A that buckles, the relation of stroke and load becomes disproportionate relation (so-called linear relationship), such as, when load characteristic declines, stop energising even if exist, plunger 134 does not leave attractor 122 yet, and piston 102 cannot the worry of close port 162.
Further, in such a state, the energising because of electromagnetic coil 108 produces so-called magnetism sound, also becomes the reason of noise (noise).
Therefore, all the time, in order to prevent buckling, the movable part of plunger, that is, the helical spring part of helical spring attractor side all makes end circle (close volume).But, only when side arranges end circle, when helical spring being installed to during assembling the spring mounting hole of plunger, likely helical spring being assembled in the other direction, in this case, the effect preventing from buckling cannot being obtained.
Therefore, at patent documentation 1(Japanese Unexamined Patent Publication 59-105664 publication) in, as shown in figure 11, propose the following helical spring 200 formed, form dense curling part in the both end sides of the middle body 202 of this helical spring 200 and divide 204, dividing 204 to prevent by these dense curling parts and buckle, preventing helical spring 200 from sandwiching between attractor and plunger when being energized simultaneously.
In addition, at patent documentation 2(Japanese Patent Publication 04-093577 publication) in, as shown in the skeleton diagram of Figure 12, helical spring 300 is formed by top spring 302 and these two springs of below spring 304, further, between spring 302 and these two springs of below spring 304, spring is installed up and inserts fixing part 306.
Thus, by using top spring 302 and these two springs of below spring 304, the spring not forming spring (not playing function as spring) is set betwixt and inserts fixing part 306, as shown in Figure 12 (A) ~ (C), the length of spring section shortens, so the side-play amount caused because buckling diminishes, and can preventing spring from stretching out from spring mounting hole, preventing spring from sandwiching between attractor and plunger when being energized.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 59-105664 publication
Patent documentation 2: Japanese Patent Publication 04-093577 publication
Patent documentation 3: Japan Patent No. 4016370 publication
But, in the helical spring 200 disclosed in patent documentation 1, the dense curling part being arranged at the both end sides of the middle body 202 of helical spring 200 is utilized to divide 204, can prevent from buckling, sandwiching, but play the part of function as spring and be defined in middle body 202, so as the decrease in efficiency of spring.
In addition, the spring function of regulation is realized if want, then have to add the total length of long helix spring 200, need to lengthen the total length being used for the spring mounting hole inserted for helical spring 200, processing spended time and artificial, further, according to circumstances also may need the length adding long-plunger, the size of solenoid valve self becomes large.
In addition, in the helical spring 200 of patent documentation 2, there is top spring 302 and insert portion 306 with these two springs of below spring 304 and spring, component number quantitative change is many, and assembling operation becomes loaded down with trivial details, and cost also uprises.
Therefore, the result that inventors of the present invention make great efforts to study is, find that the dense curling part reeled with the state be mutually close to by arranging adjacent coiler part at helical spring intermediate portion divides, the length of spring section shortens, thus the side-play amount caused because buckling diminishes, and, can prevent spring from stretching out from spring mounting hole, sandwich between attractor and plunger when preventing spring to be energized, thus complete the present invention.
In addition, at patent documentation 3(Japan Patent No. 4016370 publication) in, as shown in figure 13, propose the helical spring 400 of the following unequal-interval formed, this helical spring 400 by the both end sides coil portion 402,404 dredging volume in both end sides, and is formed in the central coil portion 406 of the close volume of central part.
But, in the helical spring 400 of such unequal-interval, the spring constant in both end sides coil portion 402,404 and central coil portion 406 changes, the stroke shown in figure of the expression stroke of Fig. 3 of the present application and the relation of load and the disproportionate relation of relation (so-called linear relationship) of load, be difficult to control.
Summary of the invention
The present invention completes in view of such present situation, its object is to provide following solenoid valve, this solenoid valve possess be difficult to produce buckle, the side-play amount that causes because buckling diminishes and the helical spring that can prevent spring from stretching out from spring mounting hole, can prevent between attractor when sandwiching energising and plunger, and this solenoid valve can reliably action.
In addition, the object of the present invention is to provide and can reduce number of components, make assembling operation easy, reduce cost, and the size of solenoid valve self can not be increased and compact solenoid valve.
The present invention is in order to realize above-mentioned such problem of the prior art and object and complete, and solenoid valve of the present invention possesses: utilize the energising of electromagnetic coil to carry out moving and make the plunger of valve body action; With the attractor that the mode opposed with above-mentioned plunger configures; And be arranged between the spring mounting hole being formed at attractor side of above-mentioned plunger and attractor, and the helical spring to valve seat direction to plunger reinforcing, the feature of above-mentioned solenoid valve is, at above-mentioned helical spring intermediate portion, the dense curling part that adjacent coiler part reels with the state be mutually close to is set and divides.
By such formation, the dense curling part not forming spring (not playing function as spring) is set at helical spring intermediate portion and divides, become and configure the identical state of the occasion of two springs with in its both sides in the mode of connecting up and down.
Therefore, use the situation of short spring identical with overlap, the length of spring section shortens, and buckles so be difficult to generation.Thereby, it is possible to provide following solenoid valve, the side-play amount namely, because buckling caused diminishes, and, can preventing helical spring from stretching out from spring mounting hole, can preventing helical spring from sandwiching between attractor and plunger when being energized, can action message.
Further, can provide following solenoid valve, namely, number of components also tails off, and assembling operation is easy, can reduce cost, and, the compact solenoid valve of solenoid valve own dimensions can not be increased.
In addition, the feature of solenoid valve of the present invention is, the coil diameter that above-mentioned helical spring dense curling part divides divide with dense curling part beyond the coil diameter of part identical.
That is, in helical spring, if helical spring total length be L, when setting helical spring coil diameter as D, if aspect ratio L/D exceedes the value of regulation, then the distortion caused because buckling sharply increases.
Therefore, divide if arrange at helical spring intermediate portion the dense curling part not forming spring (not playing function as spring), then aspect ratio is L/2D, can be in below the value that causes and buckle.
In this case, the dense curling part not increasing the intermediate portion of pinion head spring divides and also can prevent from buckling.
In addition, the feature of solenoid valve of the present invention is, the coil diameter that above-mentioned helical spring dense curling part divides divide than dense curling part beyond the coil diameter of part large, be configured to above-mentioned helical spring dense curling part and divide and guided by the inner peripheral surface of above-mentioned spring mounting hole.
By such formation, the helical spring dense curling part that coil diameter is large divide due to helical spring dense curling part divide by spring be filled with hole inner peripheral surface guide and become not easily produce buckle.
In addition, the feature of solenoid valve of the present invention is, above-mentioned attractor possesses chimeric projecting portion, and this chimeric projecting portion is projecting to plunger side, and chimeric with above-mentioned helical spring attractor side end.
By such formation, the chimeric projecting portion of attractor is chimeric with helical spring attractor side end, so the helical spring part exposed from helical spring spring mounting hole is fixed, is difficult to generation and buckles.
In addition, the feature of solenoid valve of the present invention is, the coil diameter that above-mentioned helical spring dense curling part divides divide than dense curling part beyond the coil diameter of part little, above-mentioned attractor possesses the projecting guide shaft parts projecting to plunger side, and above-mentioned helical spring dense curling part divides and guided by the periphery of the projecting guide shaft parts of above-mentioned attractor.
By such formation, the helical spring dense curling part of little coil diameter divides the periphery of the projecting guide shaft parts being attracted son to guide, and buckles so helical spring is difficult to generation.
In addition, the feature of solenoid valve of the present invention is, above-mentioned helical spring dense curling part divides the middle body being formed in helical spring total length.
Like this, if helical spring dense curling part divides the middle body being formed at helical spring total length, then as shown in the solid line of the figure of the expression stroke of Fig. 3 and the relation of load, the pass of stroke and load is proportionate relationship (so-called linear relationship), and load characteristic can not change.
In addition, the feature of solenoid valve of the present invention is, above-mentioned helical spring dense curling part divides position from the middle body of helical spring total length to attractor side that be formed in and offset from.
Like this, helical spring dense curling part divides the position that also can be formed in and offset from the middle body of helical spring total length to attractor side.
In addition, the feature of solenoid valve of the present invention is, above-mentioned helical spring dense curling part divides position from the middle body of helical spring total length to plunger side that be formed in and offset from.
Like this, helical spring dense curling part divides the position that also can be formed in and offset from the middle body of helical spring total length to plunger side.
In addition, the feature of solenoid valve of the present invention is, is formed with multiple above-mentioned helical spring dense curling part divides at helical spring intermediate portion in the mode be separated on helical spring length direction.
By such formation, at helical spring intermediate portion, being divided by the dense curling part of (not the playing function as spring) that do not form spring is formed multiple at helical spring length direction discretely, thus use the situation of multiple short spring identical with overlap, because the length of spring section shortens, buckle so be difficult to generation.
In addition, the feature of solenoid valve of the present invention is, in above-mentioned helical spring, helical spring total length is set to L, when helical spring coil diameter is set to D, the mode being in the scope of 0.8 ~ 4.0 with aspect ratio L/D is divided to form above-mentioned dense curling part.
By such formation, aspect ratio L/D is difficult to produce distortion because buckling, and can be in below the value that causes and buckle, be difficult to generation and buckle.
Effect of the present invention is as follows.
According to the present invention, divide by arranging the dense curling part not forming spring (not playing function as spring) at helical spring intermediate portion, thus become and configure the identical state of the occasion of two springs with in its both sides in the mode of connecting up and down.
Therefore, use the situation of short spring identical with overlap, because the length of spring section shortens, be therefore difficult to generation and buckle.Thereby, it is possible to provide following solenoid valve, the side-play amount namely, because buckling caused diminishes, and, can preventing helical spring from stretching out spring mounting hole, can preventing spring from sandwiching between attractor and plunger when being energized, can reliably action.
Further, can provide following solenoid valve, namely, number of components tails off, and assembling operation is easy, can reduce cost, and, the size of solenoid valve itself, compact solenoid valve can not be increased.
Accompanying drawing explanation
Fig. 1 is the outline longitudinal section of solenoid valve of the present invention.
Fig. 2 is the enlarged partial sectional view of the solenoid valve representing Fig. 1.
Fig. 3 is the figure of an example of the relation representing stroke and load.
Fig. 4 represents other the enlarged partial sectional view of solenoid valve of embodiment of the present invention.
Fig. 5 represents other the enlarged partial sectional view of solenoid valve 10 of embodiment of the present invention.
Fig. 6 represents other the enlarged partial sectional view of solenoid valve 10 of embodiment of the present invention.
Fig. 7 represents other the enlarged partial sectional view of solenoid valve 10 of embodiment of the present invention.
Fig. 8 is the enlarged partial sectional view of the solenoid valve 10 representing other embodiments of the invention.
Fig. 9 is the outline longitudinal section of existing solenoid valve.
Figure 10 is the enlarged partial sectional view of the solenoid valve of Fig. 9.
Figure 11 is the outline longitudinal section of existing solenoid valve.
Figure 12 is the helical spring outline longitudinal section of existing solenoid valve.
Figure 13 is the helical spring outline longitudinal section of existing solenoid valve.
In figure:
10-solenoid valve, 12-piston, 14-control device, 16-drive portion, 18-electromagnetic coil, 20-bobbin, 22-molding resin, 24-magnet frame frame, 26-base plate, 28-drive portion patchhole, 30-drive portion patchhole, 32-attractor, 32a-chimeric projecting portion, 32b-projecting guide shaft parts, 34-internal thread, 36-upper plate portion, 38-bolt-inserting hole, 40-clamping bolt, 42-plunger housing, 44-plunger, 48-helical spring, 48-helical spring, 48a-dense curling part divides, 48b, 48c, 48d, 48e-spring section, 50-spring mounting hole, 50a-inner peripheral surface, 52-valve body, 54-upside valve body, 56-valve chamber, 58-downside valve body, 60-valve seat, 62-first guiding path, 64-pintle valve seat, 66-needle-valve body, 68-first side stream, 70-second side stream, 72-valve port, 74-slit, 76-secondary stream, 100-solenoid valve, 102-piston, 104-control device, 106-drive portion, 108-electromagnetic coil, 110-bobbin, 112-molding resin, 114-magnet frame frame, 116-base plate, 118-drive portion patchhole, 120-drive portion patchhole, 122-attractor, 124-internal thread, 126-upper plate portion, 128-bolt-inserting hole, 130-clamping bolt, 132-plunger housing, 134-plunger, 138-helical spring, 138a-part of buckling, 140-spring mounting hole, 142-valve body, 144-upside valve body, 146-valve chamber, 148-downside valve body, 150-valve seat, 152-first guiding path, 154-pintle valve seat, 156-needle-valve body, 158-first side stream, 160-second side stream, 162-valve port, 164-slit, 166-secondary stream, 200-helical spring, 202-middle body, 204-dense curling part divides, 300-helical spring, 302-top spring, 304-below spring, portion inserted by 306-spring, 400-helical spring, 402-both end sides coil portion, 406-central coil portion.
Embodiment
Below, based on accompanying drawing, embodiments of the present invention (embodiment) are described in detail.
(embodiment 1)
Fig. 1 is the outline longitudinal section of solenoid valve of the present invention, Fig. 2 is the enlarged partial sectional view of the solenoid valve of Fig. 1, Fig. 2 (A) represents under the state of the energising cutting off electromagnetic coil, plunger leaves attractor, do not produce the enlarged partial sectional view of the state of buckling, Fig. 2 (B) represents under the state of the energising starting electromagnetic coil, create the enlarged partial sectional view of the state of buckling, Fig. 2 (C) represents to be energized to electromagnetic coil, the enlarged partial sectional view of the state that plunger abuts with attractor, Fig. 3 is the figure of the relation representing stroke and load.
In FIG, reference character 10 entirety illustrates solenoid valve of the present invention.
The solenoid valve 10 of embodiments of the invention 1 is the guide electromagnetic valve possessing pilot valve, forms as shown in Figure 1.
That is, as shown in Figure 1, solenoid valve 10 possesses control device 10, and this control device 10 possesses the piston 12 as main valve.In addition, the control device 14 of this solenoid valve 10 possesses the electromagnetic coil 18 inserted for drive portion 16.
And electromagnetic coil 18 possesses the bobbin 20 being wound with spiral, be molded by molding resin 22 in the mode of surrounding the surrounding of bobbin 20.Further, electromagnetic coil 18 is installed on the inside of magnet frame frame 24, is fixed on drive portion 16 by magnet frame frame 24.
That is, in the drive portion patchhole 30 being formed at the drive portion patchhole 28 of central part of base plate 26 of magnet frame frame 24, bobbin 20, drive portion 16 has been inserted.And, on the internal thread 34 being formed at the top of attractor 32 of drive portion 16, via the bolt-inserting hole 38 of central part of upper plate portion 36 being formed at magnet frame frame 24, be screwed clamping bolt 40.
Thus, electromagnetic coil 18 driven part 16 is inserted and fixes, and constitutes the control device 14 of solenoid valve 10.
In addition, drive portion 16 possesses plunger housing 42, possesses the plunger 44 that can move up and down in this plunger housing 42.And be provided with helical spring 48 between attractor 32 and plunger 44, by plunger 44 downwards, that is, the direction to valve seat 60 is afterburning to piston 12 for this helical spring 48.
That is, as shown in the enlarged view of Fig. 2 (A), helical spring 48 is arranged between the spring mounting hole 50 being formed at attractor 32 side of plunger 44 and attractor 32.
In addition, Fig. 2 illustrates helical spring 48 and spring mounting hole 50 gap with expanding.Illustrate state of buckling described later turgidly.
Further, solenoid valve 10 is configured to, and possesses valve body 52, in the valve chamber 56 being formed at upside valve body 54, contain piston 12, and piston 12 leaves or contact the valve seat 60 being formed at downside valve body 58.
In addition, be formed with the first guiding path 62 of up/down perforation at the middle body of this piston 12, be provided with the pintle valve seat 64 as guide's valve seat on the top of this first guiding path 62.And be provided with needle-valve body 66 highlightedly in the lower end of plunger 44, this needle-valve body 66 leaves as with this pintle valve seat 64 guide valve blocks contacted.
On the other hand, at downside valve body 58, be formed with the first side stream 68 of the inflow such as the fluid that makes such as refrigeration agent and the second side stream 70 for displacement fluids.
In addition, as mentioned above, at downside valve body 58, valve seat 60 is formed with valve port 72.
And, slit 74 is formed in the periphery of piston 12, gap between the inwall utilizing the valve chamber 56 of this slit 74 and piston 12 and upside valve body 54, defines the secondary stream 76 of ring-type, and the valve chamber 56 being configured to upside valve body 54 is communicated with first side stream 68 side.
Such solenoid valve 10 is cutting off under the state to the energising of electromagnetic coil 18, and plunger 44 utilizes the active force of helical spring 48 to move to the direction leaving attractor 32.
Thus, the needle-valve body 66 being formed at the lower end of plunger 44 moves to the direction abutted with the pintle valve seat 64 on top of the first guiding path 62 being formed at piston 12, closes first guiding path 62.
In addition, utilize this plunger 44 to the movement in direction leaving attractor 32, piston 12 abuts with the valve seat 60 being formed at downside valve body 58, and the valve port 72 being formed at valve seat 60 is closed.
In this condition, as on high-tension side first side stream 68 fluid via be formed at piston 12 periphery secondary stream 76 flow into upside valve body 54 valve chamber 56, valve chamber 56 becomes high pressure, becomes piston 12 to the direction abutted with valve seat 60 by the state of reinforcing.
On the other hand, by being energized to the electromagnetic coil 18 of solenoid valve 10, the active force that plunger 44 overcomes helical spring 48 moves to the direction of attractor 32.
Thus, the needle-valve body 66 being formed at the lower end of plunger 44 moves to the direction of pintle valve seat 64 on the top leaving the first guiding path 62 being formed at piston 12, and first guiding path 62 is opened.
Its result, the fluid of the high pressure in the valve chamber 56 of upside valve body 54 is expelled to the second side stream 70 as low voltage side via first guiding path 62.Thus, the pressure drop in valve chamber 56, utilize with as the differential pressure of the fluid of on high-tension side first side stream 68, piston 12 to lift off a seat 60 direction move, valve port 72 is opened.
But, in such solenoid valve 10, in order to fully guarantee the flow flowing out valve port 72 as described above, the displacement distance of plunger 44 must be increased, needing the helical spring 48 using lengthwise.
But under the compressive state of helical spring 48, shown in prior art Figure 10 (B) described above, helical spring 48 easily becomes the state of buckling.
Therefore, in the present application, as shown in Figure 2 (A) shows, the dense curling part carrying out reeling with the state that adjacent coiler part is close to mutually in the intermediate portion setting of helical spring 48 divides 48A.
In addition, in the present invention, " dense curling part divides " refers to as shown in Figure 2 (A) shows, adjacent coiler part carries out the state reeled with the state be mutually close to, the part of function is not played as helical spring, not only refer to the state that adjacent coiler part is close to completely mutually, also comprise the situation that adjacent coiler part has gap mutually slightly.
But according to JISB2704-1, as shown in Figure 2 (A) shows, the total length of helical spring 48 is set to L, when the coil diameter of helical spring 48 is set to D, consider the situation of buckling, aspect ratio L/D needs to be set to less than 4.0.
Such as, when the coil diameter D=φ 3mm of helical spring 48, the total length L=18mm of helical spring 48, following situation is become.
(1) as existing solenoid valve 100, as shown in Figure 10 (A), when the intermediate portion of helical spring 138 do not arrange dense curling part divide, aspect ratio L/D=18/3=6.0.
(2) solenoid valve of the present invention 10 is as shown in Figure 2 (A) shows such, when the intermediate portion of helical spring 48 be provided with dense curling part divide 48a, aspect ratio L/D=(L/2)/D=9/3=3.0.
Therefore, as existing solenoid valve 100, when the intermediate portion of helical spring 138 do not arrange dense curling part divide, aspect ratio L/D=6.0, beyond 4.0 of the CLV ceiling limit value as proper range.
On the other hand, as solenoid valve 10 of the present invention when the intermediate portion of helical spring 48 be provided with dense curling part divide 48a, aspect ratio L/D=3.0, is in proper range.
Thus, even the helical spring that aspect ratio L/D is larger, dividing by arranging dense curling part at intermediate portion, also can effectively prevent from buckling.
That is, in helical spring 48, the total length of helical spring 48 is set to L, when the coil diameter of helical spring 48 is set to D, if when aspect ratio L/D exceedes specified value, the distortion caused because buckling sharply increases.
Therefore, if arrange at the intermediate portion of helical spring 48 dense curling part not forming spring (not as spring play function) to divide 48a, then aspect ratio becomes L/2D, below the value that it can be made to be in cause and buckle.In this case, the dense curling part without the need to increasing the intermediate portion of pinion head spring 48 as embodiment 2 described later divides 48a also can prevent from buckling.
By such formation, the dense curling part not forming spring (not as spring play function) is set at the intermediate portion of helical spring 48 and divides 48a, become and configure the identical state of the situation of two spring sections 48b, 48c with in its both sides in the mode of connecting up and down.
Therefore, use the situation of short spring identical with overlap, the length of spring section (48b, 48c) shortens, so be difficult to generation to buckle (with reference to Fig. 2 (B)).Thus, the side-play amount caused of buckling diminishes, and, can prevent helical spring 48 from stretching out from spring mounting hole 50.Thereby, it is possible to helical spring 48 sandwiches (Fig. 2 (C) reference) between attractor 32 and plunger 44 when preventing energising, can provide can the solenoid valve 10 of reliably action.
Further, components number also tails off, and assembling operation is easy, can reduce cost, and, the size of solenoid valve itself can not be increased, compact solenoid valve 10 can be provided.
In addition, in solenoid valve 10 of the present invention, as shown in the solid line of the expression stroke of Fig. 3 and the relation of load, can not produce and buckle, the pass of stroke and load is proportionate relationship (so-called linear relationship), and load characteristic can not change.Its result, compared with the situation (dotted line of Fig. 3) of buckling with creating in the past, there will not be the abnormal worry of action.
In addition, in the solenoid valve 10 of this embodiment, as shown in Figure 2 (A) shows, the dense curling part of helical spring 48 divides 48a to be formed at the middle body of the total length of helical spring 48.
Like this, if if the dense curling part of helical spring 48 divides 48a to be formed at the middle body of the total length of helical spring 48, then as shown in the solid line of the figure of the expression stroke of Fig. 3 and the relation of load, the pass of stroke and load is proportionate relationship (so-called linear relationship), and load characteristic can not change.
In addition, as shown in Figure 4 (A), the dense curling part of helical spring 48 divides 48a also can be formed at the position offset to attractor 32 side from the middle body of the total length of helical spring 48.
In this case, as shown in the solid line of the figure of the expression stroke of Fig. 3 and the relation of load, being formed with the pass of load is proportionate relationship (so-called linear relationship), do not change to make load characteristic, as shown in Figure 4 (A), by the method for winding of the coil of the spring section 48c of plunger 44 side compared with the method for winding of the coil of the spring section 48b of attractor 32 side, increase the number of turn, or closeer method for winding.
In addition, in contrast, as shown in Fig. 4 (B), the dense curling part of helical spring 48 divides 48a also can be formed at the position offset to plunger 44 side from the middle body of the total length of helical spring 48.
In this case, as shown in the solid line of the figure of the expression stroke of Fig. 3 and the relation of load, the pass of stroke and load is proportionate relationship (so-called linear relationship), do not change to make load characteristic, as shown in Fig. 4 (B), as long as make the method for winding of the coil of the spring section 48b of attractor 32 side compared to the method for winding of the coil of the spring section 48c of plunger 44 side, increase the number of turn, or closeer method for winding.
Even arbitrary a kind of situation in Fig. 2, Fig. 4, be difficult to make to buckle produce, in helical spring 48, the total length of helical spring 48 is being set to L, when the coil diameter of helical spring 48 is set to D, the dense curling part that the mode being in the scope of 0.8 ~ 4.0 with aspect ratio L/D forms helical spring 48 divides 48a can (also identical in following embodiment).
(embodiment 2)
Fig. 5 is the enlarged partial sectional view of the solenoid valve 10 representing an alternative embodiment of the invention, Fig. 5 (A) represents cutting off under the state to the energising of electromagnetic coil, plunger leaves attractor, for producing the enlarged partial sectional view of the state of buckling, Fig. 5 (B) represents starting under the state be energized to electromagnetic coil, create the enlarged partial sectional view of the state of buckling, Fig. 5 (C) represents that plunger is connected to the enlarged partial sectional view of the state of attractor to electromagnetic coil energising.
The formation of the solenoid valve 10 of this embodiment is substantially identical with the solenoid valve 10 shown in embodiment 1, and mark identical reference marks to identical component parts, description is omitted.
In the solenoid valve 10 of this embodiment, as shown in Fig. 5 (A), the dense curling part of helical spring 48 divide the coil diameter D1 of 48a divide than dense curling part beyond the coil diameter D2 of spring section (48b, 48c) large.
Thus, the dense curling part being configured to helical spring 48 divides 48a to be guided by the inner peripheral surface 50a of spring mounting hole 50.
By such formation, as shown in Fig. 5 (A) ~ Fig. 5 (C), the dense curling part of the helical spring 48 that coil diameter is large divides 48a to be guided by the inner peripheral surface 50a of spring mounting hole 50, is difficult to generation and buckles.
(embodiment 3)
Fig. 6 is the enlarged partial sectional view of the solenoid valve 10 representing an alternative embodiment of the invention, Fig. 6 (A) represents under the state of the energising cutting off electromagnetic coil, plunger leaves attractor, do not produce the enlarged partial sectional view of the state of buckling, Fig. 6 (B) represents electromagnetic coil energising, the enlarged partial sectional view of the state that plunger abuts with attractor.
The structure of the solenoid valve 10 of this embodiment is substantially identical with the solenoid valve 10 shown in embodiment 1, and mark identical reference marks for identical component parts, description is omitted.
In the solenoid valve 10 of this embodiment, as shown in Fig. 6 (A), attractor 32 possesses the chimeric projecting portion 32a of roughly conical shape, and this chimeric projecting portion 32a is projecting to plunger 44 side, and chimeric with the attractor side end of helical spring 48.
By such formation, as shown in Fig. 6 (A) ~ Fig. 6 (B), the chimeric projecting portion 32a of attractor 32 is embedded in the attractor side end of helical spring 48, so the part being exposed to the helical spring 48 of the spring mounting hole 50 of helical spring 48 is fixed, becomes and is difficult to generation and buckles.
In this case, the chimeric projecting portion 32a being arranged at plunger 44 side of attractor 32 highlightedly can be wholely set with attractor 32, in addition, also can be made up of other parts, and by such as welding, be pressed into, the known fixation method such as screw-in fixes.
(embodiment 4)
Fig. 7 (A) is other the outline longitudinal section of solenoid valve of embodiment of the present invention, and Fig. 7 (B) represents that under the state of the energising cutting off electromagnetic coil, plunger leaves attractor, does not produce the enlarged partial sectional view of the state of buckling.
The structure of the solenoid valve 10 of this embodiment is substantially identical with the solenoid valve 10 shown in embodiment 1, and mark identical reference marks for identical component parts, description is omitted.
In the solenoid valve 10 of this embodiment, as shown in Fig. 7 (A), the dense curling part of helical spring 48 divide the coil diameter D1 of 48a divide than dense curling part beyond the coil diameter D2 of spring section (48b, 48c) little.
In addition, as shown in Fig. 7 (A) ~ Fig. 7 (B), attractor 32 possesses the projecting guide shaft parts 32b being provided projectingly on plunger 44 side.And the periphery that the dense curling part of helical spring 48 divides 48a to be attracted the projecting guide shaft parts 32b of son 32 guides.
In addition, the projecting guide shaft parts 32b being provided projectingly on plunger 44 side of attractor 32 can be arranged integratedly with attractor 32, in addition, other parts also can be had to form, and fix with above-mentioned such known fixation method.
By such formation, as shown in Fig. 7 (A) ~ Fig. 7 (B), the periphery that the dense curling part with the helical spring 48 of little coil diameter divides 48a to be attracted the projecting guide shaft parts 32b of son 32 guides, and buckles so be difficult to generation in helical spring 48.
(embodiment 5)
Fig. 8 is the enlarged partial sectional view of the solenoid valve 10 representing an alternative embodiment of the invention.
The structure of the solenoid valve 10 of this embodiment is substantially identical with the solenoid valve 10 shown in embodiment 1, and mark identical reference marks numbering for identical component parts, description is omitted.
In the solenoid valve 10 of this embodiment, as shown in Fig. 8 (A), the dense curling part of helical spring 48 divides 48a to be provided with multiple at the intermediate portion of helical spring 48 discretely along the length direction of helical spring 48, in the solenoid valve 10 of this embodiment, is formed with three dense curling parts and divides 48a.
By such formation, at the intermediate portion of helical spring 48, form multiple (not playing function as spring) dense curling part not formed spring in the mode be separated at the length direction of helical spring 48 and divide 48a, thus it is identical with the scheme that the multiple short spring of overlap carries out using, because the length of spring section (48b, 48c, 4bd) shortens, be difficult to generation buckle so become.
In this case, as shown in Fig. 8 (A), with regard to the method for winding of the spring section (48b, 48c, 4bd) beyond dense curling part divides, the method for winding of spring section 48b is set to B, the method for winding of spring section 48c is set to C, the method for winding of spring section 48d is set to D, their pass is made to be B=C=D, this is because wish that spring constant is constant, as as shown in the solid line of the figure of the expression stroke of Fig. 3 and the relation of load, the relation of stroke and load becomes proportionate relationship (so-called linear relationship), and load characteristic does not change.
But, also can make the method for winding C of the method for winding B of spring section 48b, spring section 48c, the uneven method for winding such as the pass of the method for winding D of spring section 48d is such as C > B=D.
In addition, in the solenoid valve 10 of the embodiment of this Fig. 8 (A), the dense curling part of helical spring 48 divides the quantity of 48a to be two, but as shown in Fig. 8 (B), the dense curling part that also can arrange more than three divide 48a and dense curling part divide beyond spring section (48b, 48c, 4bd, 48e).
Further, as shown in Fig. 8 (C), also can omit and be positioned at the spring section 48e beyond dividing by the dense curling part of plunger 44 side, make being positioned at of helical spring 48 divide 48a to use as so-called end circle by the dense curling part of plunger 44 side simultaneously.
Above, the preferred embodiment of the present invention is illustrated, but the present invention is not limited thereto, such as, be applied to the guide electromagnetic valve possessing pilot valve in the above-described embodiments, but also can be applied to other solenoid valves etc., in the scope not departing from object of the present invention, carry out various change.
Industrial utilizes possibility
The present invention is applicable to possess following helical spring solenoid valve, and this helical spring is arranged between the spring mounting hole being formed at attractor side of plunger and attractor, and afterburning to plunger to valve seat direction.
Claims (9)
1. a solenoid valve, it possesses:
Utilize the energising of electromagnetic coil to carry out moving and make the plunger of valve body action;
With the attractor that the mode opposed with above-mentioned plunger configures; And
Be arranged between the spring mounting hole being formed at attractor side of above-mentioned plunger and attractor, and the helical spring to valve seat direction to plunger reinforcing,
The feature of above-mentioned solenoid valve is,
At above-mentioned helical spring intermediate portion, the dense curling part not formed spring that adjacent coiler part reels with the state be mutually close to is set and divides,
Above-mentioned helical spring characteristic is the relation of stroke and load is proportionate relationship,
The discontiguous state of inner circle wall of the periphery that above-mentioned helical spring divides with above-mentioned dense curling part and above-mentioned spring mounting hole is configured.
2. solenoid valve according to claim 1, is characterized in that,
The coil diameter that above-mentioned helical spring dense curling part divides divide with dense curling part beyond the coil diameter of part identical.
3. solenoid valve according to claim 1 and 2, is characterized in that,
Above-mentioned attractor possesses chimeric projecting portion, and this chimeric projecting portion is projecting to plunger side, and chimeric with above-mentioned helical spring attractor side end.
4. solenoid valve according to claim 1, is characterized in that,
The coil diameter that above-mentioned helical spring dense curling part divides divide than dense curling part beyond the coil diameter of part little,
Above-mentioned attractor possesses the projecting guide shaft parts projecting to plunger side,
Above-mentioned helical spring dense curling part divides and is guided by the periphery of the projecting guide shaft parts of above-mentioned attractor.
5., according to the solenoid valve described in claim 1 or 2, it is characterized in that,
Above-mentioned helical spring dense curling part divides the middle body being formed in helical spring total length.
6., according to the solenoid valve described in claim 1 or 2, it is characterized in that,
Above-mentioned helical spring dense curling part divides position from the middle body of helical spring total length to attractor side that be formed in and offset from.
7. solenoid valve according to claim 1 and 2, is characterized in that,
Above-mentioned helical spring dense curling part divides position from the middle body of helical spring total length to plunger side that be formed in and offset from.
8. solenoid valve according to claim 1 and 2, is characterized in that,
Be formed with multiple above-mentioned helical spring dense curling part at helical spring intermediate portion in the mode be separated on helical spring length direction to divide.
9. solenoid valve according to claim 1 and 2, is characterized in that,
In above-mentioned helical spring, helical spring total length is set to L, when helical spring coil diameter is set to D, the mode being in the scope of 0.8 ~ 4.0 with aspect ratio L/D is divided to form above-mentioned dense curling part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-270400 | 2011-12-09 | ||
| JP2011270400A JP5557396B2 (en) | 2011-12-09 | 2011-12-09 | solenoid valve |
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| CN103161990A CN103161990A (en) | 2013-06-19 |
| CN103161990B true CN103161990B (en) | 2015-11-18 |
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| CN201210509517.4A Active CN103161990B (en) | 2011-12-09 | 2012-12-03 | Solenoid valve |
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| JP (1) | JP5557396B2 (en) |
| KR (1) | KR101464333B1 (en) |
| CN (1) | CN103161990B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013225530A1 (en) * | 2013-12-11 | 2015-06-25 | BSH Hausgeräte GmbH | Household appliance with a solenoid valve |
| DE102014226064A1 (en) * | 2014-12-16 | 2016-06-16 | Robert Bosch Gmbh | valve means |
| JP6377590B2 (en) * | 2015-10-06 | 2018-08-22 | 株式会社鷺宮製作所 | Electromagnetic valve drive control device and electromagnetic valve provided with electromagnetic valve drive control device |
| KR102570954B1 (en) * | 2016-12-15 | 2023-08-28 | 주식회사 에스 씨디 | Clutch and drain motor comprising same |
| KR102570957B1 (en) * | 2017-01-12 | 2023-08-28 | 주식회사 에스 씨디 | Solenoid valve and drain motor including same |
| JP2018200821A (en) * | 2017-05-29 | 2018-12-20 | 株式会社エンプラス | Electric contactor and socket for electrical component |
| CN110242759A (en) * | 2019-07-16 | 2019-09-17 | 苏州市富尔达科技股份有限公司 | A kind of door closer flow path solenoid valve and automatically controlled door closer |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5557396B2 (en) | 2014-07-23 |
| KR101464333B1 (en) | 2014-11-21 |
| JP2013122273A (en) | 2013-06-20 |
| CN103161990A (en) | 2013-06-19 |
| KR20130065594A (en) | 2013-06-19 |
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