CN1297780C - Magnetic latching solenoid valve for safe protection device of combustion equipment - Google Patents
Magnetic latching solenoid valve for safe protection device of combustion equipment Download PDFInfo
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- CN1297780C CN1297780C CNB001307789A CN00130778A CN1297780C CN 1297780 C CN1297780 C CN 1297780C CN B001307789 A CNB001307789 A CN B001307789A CN 00130778 A CN00130778 A CN 00130778A CN 1297780 C CN1297780 C CN 1297780C
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Abstract
The present invention relates to a gas electromagnetic valve which is provided with a push type manual operation mechanism with an automatic reset function, a magnet keeping electromagnet hermetically arranged in a gas valve cavity, and a cut-off valve machine device. A handle is pushed so that the electromagnetic valve is in a magnetic keeping normally open valve position. When a reverse excitation coil DZF of magnet keeping electromagnet is switched on by pulse, the electromagnetic valve automatically cut off a gas source. An iron core is made of low-carbon steel, and the present invention has the advantages of simple and mature technology and structure, low manufacture cost, compact volume and high reliable work. When the valve is turned off, the DC pulse power of 1.5 V to 3V and 0.2 A /0.02s is consumed.
Description
Technical field
The present invention is dividing an application of Chinese invention patent application CN98111838.0.Original application day: 1998.01.23; Application number: 98111838.0; Denomination of invention: the preparation method of flame sensor and combustion utensile safety protector.
The present invention relates to a kind of combustion gas blowout protection magnetic valve of combustion utensile safety protector, particularly a kind of magnetic holding solenoid valve belongs to the electromagnet and the mechanical magnetic valve field of electricity.
Background technology
In the prior art, CN89105949.0 provides a kind of technical scheme of magnetic holding type tractive electromagnet.Its main weak point is: this is a kind of general technical scheme that relates to magnetic-holding electric magnet, and magnetic structure is unreasonable, lacks manual-operating mechanism, can't very use in the narrow space at the burner gas valve.But DE-A1-19723653 provides the combustion utensile safety protector of a kind of reverse energization with the quick closedown magnetic valve; its main weak point is: must increase a cut-out circuit of being made up of DC5V/1A dc source, relay, printed circuit board (PCB) traditional hot galvanic couple/magnetic valve is carried out reverse excitation, cause the long defective of valve-closing time so as to improvement hot thermocouple inertia.Its complex structure, cost costliness and valve-closing time still reach time-delay in 1～2 second.Having the long valve thermal inertia of opening when igniting delays time.
Summary of the invention
The objective of the invention is to overcome the weak point of above-mentioned prior art; the magnetic holding solenoid valve that provides a kind of combustion utensile safety protector to use; it has manually drives valve, opens not power consumption under the valve state, only consumes when closing valve 3V; 0.15 the pulsed operation electric current about～0.2A/20mS, its structure and technology are simple ripe, with low cost, volume is small and exquisite, work is highly reliable.
Purpose of the present invention can realize by following measure:
The magnetic holding solenoid valve of combustion utensile safety protector, the axis part of valve is provided with a cavity, the middle part of cavity is provided with a control mouth, the one side is a gas inlet, opposite side is the gas outlet, a handle, one can axially-movable connecting rod, a washer that links with the connecting rod rigidity, a spring constitutes the automatic reset mechanism of magnetic valve handle/connecting rod, described connecting rod passes valve body and makes the cavity of described magnetic valve and valve body space outerpace keep essential air-tightness by one or more sealing device, a magnetic-holding electric magnet, comprise upper magnet yoke [1], fixing magnetic core [2], permanent magnet [3], side magnetic yoke [4], lower yoke [5], solenoid [6], bobbin [7], moving [8] and back-moving spring [9] unshakable in one's determination, central axis with fixing magnetic core [2] and moving [8] unshakable in one's determination is a symmetry axis, be formed on geometry, the installation site, structural behaviour, the symmetrical work magnetic circuit in magnetic property aspect, wherein permanent magnetic circuit is closed symmetrical magnetic circuits when electromagnetic actuation, permanent-magnet line and the main flux of the electromagnetism magnetic line of force pass moving [8] unshakable in one's determination and the fixing main working gas gap between the magnetic core [2] and parallel each other in the described magnetic circuit, the polarity on two planes up and down of permanent magnet [3] that is installed in the central axis both sides is opposite each other, central part in lower yoke [5] is provided with the guide rail bearing that moving [8] unshakable in one's determination insertion is slided, it has the inboard vertical plane of regularization, it is characterized in that: described magnetic-holding electric magnet [200] is sealed to be installed on the bottom valve seat [205] of described cavity, the described side magnetic yoke [4] of described magnetic-holding electric magnet [200] is a cylindric magnetic conductor, be provided with an axle center hole [32] at the bottom of the cylinder, a smooth outer pole-face [23] is arranged at the bottom of the cylinder, the open top end position of cylindric magnetic conductor is provided with an inner stopper [61] and the smooth seam inner edge surface [62] and the annular lip [63] of inner stopper, also is provided with on the annular lip of described inner stopper [63] more than two and turns over riveting pressure point [64] in uniform; The described upper magnet yoke [1] of described magnetic-holding electric magnet [200] be one with the long-pending suitable unitary circular yoke of described cylindric magnetic conductor projection plane, its central part is provided with described fixedly magnetic core [2], the axis part in described fixedly magnetic core [2] outside also is provided with the cylinder [38] of an evagination, and a nut [16] cooperates a cored screw [15] that cylinder [38] and described magnetic-holding electric magnet [200] are fixed on the described valve seat [205]; The described lower yoke [5] of described magnetic-holding electric magnet [200] is a circular orifice that is provided with central axis hole, the outside of its central axis hole is provided with the circular described guide rail bearing [51] of an evagination, by the pressurization interference fit described lower yoke [5] is imbedded the described seam inner edge surface [62] of described side magnetic yoke [4], its best magnitude of interference is no less than 0.02mm; The described moving iron core [8] of described magnetic-holding electric magnet [200] links with a valve rod [10] rigidity, the other end of valve rod [10] is installed the supporting plate [12] that a rigid material is made, the valve plug [11] that a flexible material is made is installed on the outer side plane of supporting plate [12], push described handle [201] and surpass the impulse stroke [δ] of described magnetic-holding electric magnet [200], described magnetic holding solenoid valve be magnetic remain on zero-power open valve position and a maintenance suitable axial air gap [Δ H '] between the outside end face of the inner side end of connecting rod [202] and valve rod [10]; The described moving iron core [8] of described magnetic-holding electric magnet [200] also is provided with the confined planes [81] of control described moving iron core [a 8] impulse stroke [δ] at the end near described guide rail bearing [51]; The described solenoid [6] of described magnetic-holding electric magnet [200] is that the reverse excitation of tens of milliseconds of pulsewidths is closed valve coil [DZF]; The iron core of described magnetic-holding electric magnet [200] uses mild steel or electrical pure iron or other ferrimagnet to make.
Between the described moving iron core [8] of described magnetic-holding electric magnet [200] and the central axis hole of described bobbin [7], and all reserve enough the air gaps [33] that produces the air bag damping phenomena when eliminating described moving iron core [8] axially-movable at the described solenoid [6] of described magnetic-holding electric magnet and the inner wall space of the cylindric magnetic conductor of the described magnetic-holding electric magnet of sealing.
On the mating surface of described moving iron core [8] outboard end, be provided with an annular groove, fill sealing ring or sealed solid filler [53] in described groove, the sealing load that constitutes thus between described moving iron core [8] and the described guide rail bearing [51] is the sealing device that is slidingly matched of 1-5Kpa.
On the inboard mating surface of described guide rail bearing [51], be provided with an annular groove, fill sealing ring or sealed solid filler [53] in described groove, the sealing load that constitutes thus between described moving iron core [8] and the described guide rail bearing [51] is the sealing device that is slidingly matched of 1-5Kpa.
A stuffing-box housing [57] fixes the outside top in described guide rail bearing [51], fill sealing ring or sealed solid filler [53] in stuffing-box housing [57], the sealing load that constitutes thus between described moving iron core [8] and the described guide rail bearing [51] is the sealing device that is slidingly matched of 1-5Kpa.
At the bottom of the cylinder of described side magnetic yoke [4], described upper magnet yoke [1] and cored screw [15] be provided with through wires hole [37], described electromagnetic valve coil [DZF] draw that lead is drawn thus and with encapsulant [17] with itself and described magnetic holding solenoid valve seal isolation.
Compared with the prior art the present invention has following advantage:
1. circuit structure and production technology are simple, and volume is small and exquisite.
2. cheap for manufacturing cost.
3. defencive function is reasonable, and manually opened magnetic valve realizes that no power consumption magnetic keeps operation, and flame-out accident is protected fast, than 9 times of existing national standard (gas instantaneous water heater) raising speed.
4. the Overall Power Consumption of one four duration and degree of heating burner when normal combustion is about 3V/1.5 μ A or 4.5V/3 μ A, reduces about 4000 times than the power consumption of conventional AC induction type flame sensor.
5. through the operation of the keying about 3000 times more than 2 years, prove that the cmos circuit and the magnetic holding solenoid valve work of the present invention's proposition is all very reliable.
6. can under the prerequisite that does not change existing combustion gas tool machine product basic structure, implement the present invention.
Description of drawings
Accompanying drawing drawing explanation of the present invention:
Fig. 1. magnetic holding solenoid valve example structure schematic diagram.
Fig. 2. magnetic holding solenoid valve electromagnet embodiment.
Fig. 3. the moving unshakable in one's determination and guide rail bearing sealing device structure embodiment of magnetic holding solenoid valve.
Fig. 4. combustion utensile safety protector embodiment.
The specific embodiment
The invention will be further elaborated below in conjunction with accompanying drawing.
Fig. 1 shows magnetic holding solenoid valve example structure schematic diagram of the present invention.
Whole valve body is fixedly installed on the interior spatial structure of burner.The cut-off type magnetic holding solenoid valve that (relevant burner partly this figure omission is not painted) described in the present embodiment magnetic valve is a bi-bit bi-pass.The axis part of valve is provided with a cavity, and the one side communicates with air inlet 216, and the middle part of cavity is provided with a control mouth 217, and it communicates with the gas outlet 218 of cavity opposite side.The magnetic-holding electric magnet 200 of a magnetic valve is sealed to be installed on the bottom valve seat 205 of cavity, it has the valve rod 10 of an axially-movable, one by spring 9, annexes such as supporting plate are installed the other end that the sheet valve plug 11 of locating is installed in valve rod 10, in the upper end of cavity with the control interruption-forming, with valve rod 10 same axle center, be provided with a through hole 243 at the top of valve body 204, the connecting rod 202 of an axially-movable passes from through hole 243, and their cross-sectional area should match each other and make cavity and valve body space outerpace keep certain air-tightness by one or more fixing seal devices 233 that are installed in through-hole wall.Washer 203 rigidity are attached on the valve rod, are provided with a spring 231 between washer and the control mouth, and under the spring tension effect, connecting rod 202 moves laterally and be spacing by the upper end inner side plane institute of washer and cavity.A handle 201 is installed in an end of the connecting rod that stretches out valve body, and 637 1 enough operation height Δ H of the hole of the burner guidance panel 602 of emerging, and the other end of connecting rod 202 and sheet valve plug 11 and valve rod 10 leave a suitable axial air gap Δ H '.Under nature, sheet valve plug 11 is closed described control mouthfuls 217 under the tension force effect of spring 9, and this moment, the air inlet and the gas outlet of magnetic valve were tightly cut off, as Fig. 1 a) shown in.Manually push handle 201 and connecting rod 202, force sheet valve plug 11 and valve rod 10 to move axially to the inside and clash into described valve rod 10 and drive moving unshakable in one's determination 8 motions to the inside of described magnetic-holding electric magnet 200 simultaneously and coincide with fixing magnetic core 2, whole connecting rod, handle return to reset condition after loosing one's grip under the tension force effect of spring 231, but this moment is closed because of the polarization magnetic circuit of described electromagnet, so the control mouth of air inlet after opening is communicated with the gas outlet, what described magnetic holding solenoid valve promptly was in no power consumption manually drives valve position, as Fig. 1 b) shown in.
Fig. 2 shows the embodiment of the magnetic-holding electric magnet of magnetic holding solenoid valve of the present invention.
It is a new invention that forms through further improving on the granted patent CN89105949.0 basis that the inventor obtains.
As seen from Figure 1, shown in Fig. 2 only be the combustion utensile safety protector magnetic valve core partly: i.e. the parts profilograph of cut-off type magnetic holding solenoid valves such as described magnetic-holding electric magnet 200 and described valve rod 10, sheet valve plug 11, back-moving spring 9.As a complete described safety protective valve, Fig. 2 has omitted traditional valve body, valve seat, connecting rod, connecting rod sealing device and operating grip.Wherein, upper magnet yoke 1, permanent magnet 3, side magnetic yoke 4, lower yoke 5, guide rail bearing 51, fixedly magnetic core 2, moving unshakable in one's determination 8 constitutes the polarization magnetic circuit of magnetic-holding electric magnets 200; And side magnetic yoke 4, lower yoke 5, guide rail bearing 51, moving unshakable in one's determination 8, the fixing electromagnetic circuit of the exhausted magnetosheath pipe 21 formation magnetic-holding electric magnets 200 of magnetic core 2, solenoid 6 and punching, more detailed description can be consulted the CN89105949.0 literature content.Described side magnetic yoke 4 is magnetic conductors cylindraceous, and a smooth outer pole-face 23 is arranged at the bottom of the cylinder, is provided with an axle center hole 32 at the bottom of the cylinder, the diameter in hole than the slightly larger in diameter of described fixedly magnetic core 2 some.The top at the uncovered position of cylinder is provided with an inner stopper 61 and smooth seam inner edge surface 62, and the axial height of seam exceeds about 1 to 2 millimeter of the thickness of lower yoke 5.A bobbin 7 axially is installed in the described cylinder, solenoid 6 be one flat around reverse magnet exciting coil DZF.The end of bobbin 7 is the exhausted magnetosheath pipes 21 (can certainly be made into an individual part) of a punching, and it is sleeved on fixedly on the magnetic core 2 and passes axle center hole 32.Be installed in parallel outside side magnetic yoke between the pole-face 23 and upper magnet yoke 1 at the polarized permanent magnet 3 of thickness direction, as seen by above-mentioned, because the existence of the exhausted magnetosheath pipe 21 of punching, permanent magnet 3 is unlikely formation magnet short-cut path.Moving unshakable in one's determination 8 is smooth cylinders, its pole-face and the fixing work pole-face 80 of the pole-face formation electromagnet of magnetic core 2.Moving unshakable in one's determination 8 present the face of cylinder of two different-diameters on axial height, the wherein close fixedly face of cylinder of magnetic core 2 one sides has main axial height and big slightly diameter; The intersection, the face of cylinder of two different-diameters forms the confined planes 81 that moving 8 impulse strokes unshakable in one's determination of control are no more than the δ value.Described lower yoke 5 is whole orifice plates of a circle, its axis part is provided with the guide rail bearing 51 of an evagination, it has smooth inner surface, with good being slidingly matched of moving 8 formation unshakable in one's determination, the sliding gap 52 of joining is generally tens of microns, making the whole orifice plate of described circle by the weight cooperation is that lower yoke 5 is imbedded in the seam inner edge surface 62 of side magnetic yoke 4, and its best magnitude of interference is not less than 0.02 millimeter.At this moment because the annular lip 63 of inner stopper still exceeds about 1 to 2 millimeter of the outer edge surface of lower yoke 5, for the purpose of the location, on described annular lip 63, also be provided with uniform, be no less than more than two in turn over riveting pressure point 64.When moving back and forth, moving iron core 8 forms unsuitable air bag damping phenomena in order to eliminate in the axis hole of bobbin 7, the present invention's regulation, at the cylinder inner wall space of bobbin 7, must be reserved with enough air-gaps 33 with the side magnetic yoke 4 of moving iron core 8 and bobbin 7 and solenoid 6 and sealing.A valve rod 10 is rigidly connected with moving unshakable in one's determination 8, back-moving spring 9 is sleeved on outside valve rod and the guide rail bearing 51, valve rod 11 is provided with necessary cannelure, and sheet valve plug 11, pad 13, key pin 14 and the metal masthead 34 of back-moving spring locating flange 35, rigid tray 12, flexibility is installed respectively.For magnetic property and the processing technology of improving described magnetic-holding electric magnet, described fixedly magnetic core 2 can be a complete magnetic conductor with upper magnet yoke 1, is welded into an integral body after also can making respectively.Axis part place in described fixedly magnetic core 2 outsides, also be provided with the cylinder 38 of an evagination, rely on to expand riveting or be threaded will assemble all-in-one-piece magnetic-holding electric magnet 200 and cored screw 15 and nut 16 by cylinder 38 and is coupled to one and be fixed on the valve seat 205.Solenoid 6 draw electric wire 19 after passing the through wires hole 37 of side magnetic yoke 4 and upper magnet yoke 1, thereby with encapsulant 17 with the inner space of cored screw 15 and permanent magnet 3 and upper magnet yoke 1 and fixedly between the magnetic core 2 redundant space of formation all fill up and guarantee that magnetic holding solenoid valve has enough air-tightness.At last, join inside that gap invade electromagnet by moving unshakable in one's determination 8 with the cunning of guide rail bearing 51 formation in order to prevent impurity such as the tar in the combustion gas, little water droplet, molysite, the present invention also is provided with at the outboard end place that described cunning is joined the gap and is mounted in guide rail bearing or the moving surperficial annular groove unshakable in one's determination or is locked in sealing ring or sealed solid filler 53 in the stuffing-box housing, and specific embodiments can be referring to node A and shown in Figure 3.
Fig. 3 shows the moving iron core of magnetic holding solenoid valve of the present invention and the guide rail bearing cunning is joined the various embodiment schemes that sealing ring or airtight and watertight padding are set between the face.
Because the burner gaseous-pressure is generally all very low, its value is about about 1-5kpa, and sealing device of the present invention requires lower than the sealing device described in the common mechanical engineering, its main purpose is that the impurity that prevents the solid shape such as tar, the globule, molysite class black dirt in the combustion gas is joined the gap from described cunning and invaded electromagnet inside, and the pole-face of electromagnet can not finely be coincide.Fig. 3 has shown the structure of Fig. 2 node A: by 1a) as seen, be provided with the annular groove of a level at the end of guide rail bearing 51 medial surface, be provided with the sealing ring 53 of solid material making in the groove even also add the certain solid lubricant 54 of notes, push after moving unshakable in one's determination 8, join gap 52 and obturage sliding thereby sealing ring 53 is subjected to slight compression.Fig. 3 c), Fig. 3 e) shown in scheme described cannelure is arranged on moving unshakable in one's determination 8 outer surface, and for the purpose of easy to assembly, all sealing devices of Fig. 3 are equipped with to make installs fit-up gap 55 easily.Fig. 3 b), Fig. 3 H Fig. 3 F Fig. 3 D))) then show the embodiment of another kind of encapsulation scheme: be provided with sealing ring or sealed solid filler 53 at the top of guide rail bearing 51, it is locked within the stuffing-box housing 57.Element 57 can fix in the outside of guide rail bearing groove 56, as Fig. 3 b) shown in.Also can be fastened on the upper magnet yoke 5, as Fig. 3 D with screw 58) shown in.Can also utilize back-moving spring 9 and locating flange 59 to be fixed, as Fig. 3 F) shown in.Certainly can also filler 53 be squeezed and sealed sliding is joined the gap with traditional binding thread 60, as Fig. 3 H) shown in.
Fig. 4. combustion utensile safety protector embodiment.
This is the WO98/33019 that proposes of the inventor and the combustion utensile safety protector embodiment of Chinese invention patent application CN98111838.0.
It has the flame sensor 801 of CN98111838.0 claim 5 regulation, in the present embodiment, also adopt the CMOS phase inverter and the feedback network of two cascades to form auto-excitation type electric oscillator 101, about Fig. 5, Fig. 1 embodiment explanation that element number, circuit structure and the operation principle of described flame sensor 01 and described electro coupled oscillator 101 can be consulted CN98111838.0, present embodiment no longer gives repetition.Different with CN98111838.0 Fig. 8 embodiment is: the burner gas control valve interlocking switch LK of present embodiment is the moving pass of running jointly of one group of one pole, and it is connected when opening valve position, disjunction when closing valve position, and switch LK seals in power supply E
1The negative or positive electrode main circuit in.Co simulate test circuit 808 is by the low values of resistors R of a number kilo-ohm
cBe composed in series and be attempted by on node 108 and the G point with a making button LAC.During the simulated accident state, only need press LAC and surpass the setting time-delay, level amplitude discriminator 106 is the CMOS inverter ic
4Output export 1 level emergency logic signal immediately, control module circuit 8001 and accident performance element circuit 8002 will start work on time.About the formation of described control module circuit 8001 with accident " is stopped working " and the operation principle of accident " short circuit " can be consulted related description such as Fig. 5 of CN98111838.0 and Fig. 8, present embodiment is omitted and is no longer repeated.In the present embodiment, only the CMOS hex inverter chip of a CD4069 of needs can satisfy whole requirements of flame sensor 801 and 8001 pairs of IC circuit of control module circuit, this shows that its structure is very ingenious, simple and cheap.
By CN98111838.0 claims and specification as seen, magnetic holding solenoid valve provided by the invention is installed on the air inlet lateral line of described burner or burner burner, magnetic holding solenoid valve provided by the invention can also be installed on the burner fuel gas source air intake branch in addition.
When burner takes place flame-out accident, flame probe by the gas accidentses such as electric conductor short circuit beyond the flame, flame sensor 801 sends accident level 1 signal, control circuit 8001 sends the monostable triggering signal of tens of milliseconds of pulsewidths after time-delay in 4 to 7 seconds, power driving circuit 804 conductings, the reverse excitation of magnetic holding solenoid valve is closed valve coil DZF conducting, and magnetic holding solenoid valve discharges and close the fuel gas source of described burner automatically.
Obviously; present embodiment mainly provides accident " to stop working " and two kinds of basic protections of accident " short circuit "; but as long as with other sensor; for example earthquake, combustion liquid or signal of sensor such as gaseous-pressure superpressure, smog be adjusted into 1 level signal (the present invention is all by the positive logic design) and be connected to described node 109 ' or node e on, just can carry out simple to the defencive function of combustion utensile safety protector of the present invention and effectively expansion.The CN98111838.0 that for further details, please refer to inventor's proposition discloses the explanation of relevant Fig. 8 embodiment in the text.
In addition, open text of one of basic patent of the present invention ZL89105949.0 and mandate text all show: the present invention can adopt mild steel to make the iron core of magnetic-holding electric magnet.
Claims (6)
1. the magnetic holding solenoid valve of combustion utensile safety protector; the axis part of valve is provided with a cavity; the middle part of cavity is provided with a control mouth; the one side is a gas inlet; opposite side is the gas outlet; a handle; one can axially-movable connecting rod; a washer that links with the connecting rod rigidity; a spring constitutes the automatic reset mechanism of magnetic valve handle/connecting rod; described connecting rod passes valve body and makes the cavity of described magnetic valve and valve body space outerpace keep essential air-tightness by one or more sealing device; a magnetic-holding electric magnet; comprise upper magnet yoke [1]; fixing magnetic core [2]; permanent magnet [3]; side magnetic yoke [4]; lower yoke [5]; solenoid [6]; bobbin [7]; moving [8] and back-moving spring [9] unshakable in one's determination; central axis with fixing magnetic core [2] and moving [8] unshakable in one's determination is a symmetry axis; be formed on geometry; the installation site; structural behaviour; the symmetrical work magnetic circuit in magnetic property aspect; wherein permanent magnetic circuit is closed symmetrical magnetic circuits when electromagnetic actuation; permanent-magnet line and the main flux of the electromagnetism magnetic line of force pass moving [8] unshakable in one's determination and the fixing main working gas gap between the magnetic core [2] and parallel each other in the described magnetic circuit; the polarity on two planes up and down of permanent magnet [3] that is installed in the central axis both sides is opposite each other; central part in lower yoke [5] is provided with the guide rail bearing that moving [8] unshakable in one's determination insertion is slided; it has the inboard vertical plane of regularization, it is characterized in that:
Described magnetic-holding electric magnet [200] is sealed to be installed on the bottom valve seat [205] of described cavity, the described side magnetic yoke [4] of described magnetic-holding electric magnet [200] is a cylindric magnetic conductor, be provided with an axle center hole [32] at the bottom of the cylinder, a smooth outer pole-face [23] is arranged at the bottom of the cylinder, the open top end position of cylindric magnetic conductor is provided with an inner stopper [61] and the smooth seam inner edge surface [62] and the annular lip [63] of inner stopper, also is provided with on the annular lip of described inner stopper [63] more than two and turns over riveting pressure point [64] in uniform;
The described upper magnet yoke [1] of described magnetic-holding electric magnet [200] be one with the long-pending suitable unitary circular yoke of described cylindric magnetic conductor projection plane, its central part is provided with described fixedly magnetic core [2], the axis part in described fixedly magnetic core [2] outside also is provided with the cylinder [38] of an evagination, and a nut [16] cooperates a cored screw [15] that cylinder [38] and described magnetic-holding electric magnet [200] are fixed on the described valve seat [205];
The described lower yoke [5] of described magnetic-holding electric magnet [200] is a circular orifice that is provided with central axis hole, the outside of its central axis hole is provided with the circular described guide rail bearing [51] of an evagination, by the pressurization interference fit described lower yoke [5] is imbedded the described seam inner edge surface [62] of described side magnetic yoke [4], its best magnitude of interference is no less than 0.02mm;
The described moving iron core [8] of described magnetic-holding electric magnet [200] links with a valve rod [10] rigidity, the other end of valve rod [10] is installed the supporting plate [12] that a rigid material is made, the valve plug [11] that a flexible material is made is installed on the outer side plane of supporting plate [12], push described handle [201] and surpass the impulse stroke [δ] of described magnetic-holding electric magnet [200], described magnetic holding solenoid valve be magnetic remain on zero-power open valve position and a maintenance suitable axial air gap [Δ H '] between the outside end face of the inner side end of connecting rod [202] and valve rod [10];
The described moving iron core [8] of described magnetic-holding electric magnet [200] also is provided with the confined planes [81] of control described moving iron core [a 8] impulse stroke [δ] at the end near described guide rail bearing [51];
The described solenoid [6] of described magnetic-holding electric magnet [200] is that the reverse excitation of tens of milliseconds of pulsewidths is closed valve coil [DZF];
The iron core of described magnetic-holding electric magnet [200] uses mild steel or electrical pure iron or other ferrimagnet to make.
2. according to the magnetic holding solenoid valve of claim 1 regulation, it is characterized in that: between the described moving iron core [8] of described magnetic-holding electric magnet [200] and the central axis hole of described bobbin [7], and all reserve enough the air gaps [33] that produces the air bag damping phenomena when eliminating described moving iron core [8] axially-movable at the described solenoid [6] of described magnetic-holding electric magnet and the inner wall space of the cylindric magnetic conductor of the described magnetic-holding electric magnet of sealing.
3. according to the magnetic holding solenoid valve of claim 1 regulation, it is characterized in that: on the mating surface of described moving iron core [8] outboard end, be provided with an annular groove, fill sealing ring or sealed solid filler [53] in described groove, the sealing load that constitutes thus between described moving iron core [8] and the described guide rail bearing [51] is the sealing device that is slidingly matched of 1-5Kpa.
4. according to the magnetic holding solenoid valve of claim 1 regulation, it is characterized in that: on the inboard mating surface of described guide rail bearing [51], be provided with an annular groove, fill sealing ring or sealed solid filler [53] in described groove, the sealing load that constitutes thus between described moving iron core [8] and the described guide rail bearing [51] is the sealing device that is slidingly matched of 1-5Kpa.
5. according to the magnetic holding solenoid valve of claim 1 regulation, it is characterized in that: a stuffing-box housing [57] fixes the outside top in described guide rail bearing [51], fill sealing ring or sealed solid filler [53] in stuffing-box housing [57], the sealing load that constitutes thus between described moving iron core [8] and the described guide rail bearing [51] is the sealing device that is slidingly matched of 1-5Kpa.
6. according to the magnetic holding solenoid valve of claim 1 regulation, it is characterized in that: at the bottom of the cylinder of described side magnetic yoke [4], described upper magnet yoke [1] and cored screw [15] be provided with through wires hole [37], described electromagnetic valve coil [DZF] draw that lead is drawn thus and with encapsulant [17] with itself and described magnetic holding solenoid valve seal isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001307789A CN1297780C (en) | 1998-01-23 | 1998-01-23 | Magnetic latching solenoid valve for safe protection device of combustion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001307789A CN1297780C (en) | 1998-01-23 | 1998-01-23 | Magnetic latching solenoid valve for safe protection device of combustion equipment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98111838 Division CN1073700C (en) | 1997-01-24 | 1998-01-23 | Preparation method for flame sensor and combustion utensile safety protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1341825A CN1341825A (en) | 2002-03-27 |
| CN1297780C true CN1297780C (en) | 2007-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001307789A Expired - Fee Related CN1297780C (en) | 1998-01-23 | 1998-01-23 | Magnetic latching solenoid valve for safe protection device of combustion equipment |
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| CN (1) | CN1297780C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102010039011A1 (en) * | 2010-08-06 | 2012-02-09 | BSH Bosch und Siemens Hausgeräte GmbH | Multiple actuator for gas appliances |
| CN102568734A (en) * | 2012-03-26 | 2012-07-11 | 无锡隆盛科技有限公司 | Flux concentrating ring |
| CN104565391B (en) * | 2014-12-31 | 2017-05-24 | 浙江亿斯特阀门有限公司 | Anti-vibration solenoid valve |
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| CN87206281U (en) * | 1987-04-08 | 1987-12-30 | 肖建平 | Dual-purpose safety kitchen range for cooking and heating water |
| CN1050463A (en) * | 1989-09-05 | 1991-04-03 | 张凡 | Magnetic holding type tractive electromagnet and control circuit thereof |
| CN2125782U (en) * | 1992-01-14 | 1992-12-23 | 轻工业部自动化仪表科学研究所 | Double-winding gas-range extinction protective device |
| CN2177199Y (en) * | 1992-07-14 | 1994-09-14 | 重庆峡江通用设备工业公司 | Ionization extinction protector for household gas burning quick-acting water heater |
| DE19723653A1 (en) * | 1996-06-05 | 1997-12-11 | Lg Electronics Inc | Safety disconnector e.g for commercial and domestic gas-burning apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206281U (en) * | 1987-04-08 | 1987-12-30 | 肖建平 | Dual-purpose safety kitchen range for cooking and heating water |
| CN1050463A (en) * | 1989-09-05 | 1991-04-03 | 张凡 | Magnetic holding type tractive electromagnet and control circuit thereof |
| CN2125782U (en) * | 1992-01-14 | 1992-12-23 | 轻工业部自动化仪表科学研究所 | Double-winding gas-range extinction protective device |
| CN2177199Y (en) * | 1992-07-14 | 1994-09-14 | 重庆峡江通用设备工业公司 | Ionization extinction protector for household gas burning quick-acting water heater |
| DE19723653A1 (en) * | 1996-06-05 | 1997-12-11 | Lg Electronics Inc | Safety disconnector e.g for commercial and domestic gas-burning apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1341825A (en) | 2002-03-27 |
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Address after: 518034 Shenzhen City, Guangdong province Futian District Hongli West Road Municipal compound 29, 301 Patentee after: Zhang Fan Address before: 610081 No. 23, No. 63, Zhang Jia alley, Chengdu, Sichuan, Jinniu District Patentee before: Zhang Fan |
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