CN216045727U - Electromagnetic valve and gas appliance - Google Patents
Electromagnetic valve and gas appliance Download PDFInfo
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- CN216045727U CN216045727U CN202122384945.6U CN202122384945U CN216045727U CN 216045727 U CN216045727 U CN 216045727U CN 202122384945 U CN202122384945 U CN 202122384945U CN 216045727 U CN216045727 U CN 216045727U
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Abstract
The utility model relates to an electromagnetic valve and a gas appliance, wherein the electromagnetic valve comprises a valve body; a valve core; the valve opening assembly comprises a valve opening coil, and the valve opening coil drives the valve plug to enter a valve opening state after being electrified; the maintaining assembly comprises a maintaining coil, a transmission piece and a lever, wherein the lever is provided with a rotating part, a movable part and a connecting part which are movably connected with the valve body, the valve core and the transmission piece in a one-to-one correspondence manner, and the distance between the rotating part and the connecting part is greater than that between the rotating part and the movable part; the elastic piece is used for driving the valve plug to enter a valve closing state after the valve opening coil and the maintaining coil are both powered off; after the valve core is driven to enter the valve opening state by electrifying the valve opening coil, the maintaining coil is electrified, and the maintaining coil provides force for keeping the valve core in the valve opening state to the lever through the transmission piece. According to the lever principle, the electromagnetic force provided by the maintaining coil is smaller than the elastic force of the elastic piece, so that the electromagnetic force required for keeping the valve core in the valve opening state is reduced, and the power consumption is effectively reduced.
Description
Technical Field
The utility model relates to the technical field of control valves, in particular to an electromagnetic valve and a gas appliance.
Background
The electromagnetic valve is a control valve, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured.
When the traditional electromagnetic valve is in a state of keeping open the valve, the electromagnetic force generated by the electromagnetic valve needs to be larger than the elastic force for resetting the valve core, when the state lasts for a long time, more electric quantity can be consumed, and if a dry battery is used for supplying power, the service life of the dry battery can be shortened.
SUMMERY OF THE UTILITY MODEL
The first technical problem to be solved by the present invention is to provide a solenoid valve, which can effectively reduce power consumption.
A second technical problem to be solved by the present invention is to provide a gas appliance which can effectively reduce power consumption.
The first technical problem is solved by the following technical scheme:
a solenoid valve includes a valve body; a valve core; the valve opening assembly comprises a valve opening coil, and the valve opening coil drives the valve core to enter a valve opening state after being electrified; the maintaining assembly comprises a maintaining coil, a transmission piece and a lever, wherein the lever is provided with a rotating part, a movable part and a connecting part which are movably connected with the valve body, the valve core and the transmission piece in a one-to-one correspondence manner, and the distance between the rotating part and the connecting part is greater than that between the rotating part and the movable part; the elastic piece is used for driving the valve core to enter a valve closing state after the valve opening coil and the maintaining coil are both powered off; and after the valve core is driven to enter the valve opening state by electrifying the valve opening coil, electrifying the maintaining coil, wherein the maintaining coil provides force for keeping the valve core in the valve opening state to the lever through the transmission piece.
Compared with the background art, the electromagnetic valve has the beneficial effects that: when the electromagnetic valve starts to work, the valve opening coil is electrified, and current flows through the valve opening coil, so that large electromagnetic force can be generated instantly, and the valve core is switched from a valve closing state to a valve opening state quickly. After the valve core enters the valve opening state, the coil is kept electrified, and the generated electromagnetic force keeps the valve core in the valve opening state through the transmission piece and the lever. Because the distance between the rotating part and the connecting part is larger than the distance between the rotating part and the movable part, according to the lever principle, the electromagnetic force provided by the maintaining coil is smaller than the elastic force of the elastic part, and the maintaining coil can also maintain the valve core in the valve opening state, so that the electromagnetic force required for maintaining the valve core in the valve opening state is reduced, the power consumption is effectively reduced, and if a dry battery is used for supplying power, the service life of the dry battery is prolonged.
In one embodiment, the resistance of the hold-in coil is greater than the resistance of the open-valve coil; and/or, when the maintaining coil is electrified, the maintaining coil and the valve opening coil are electrified in series. Since the holding coil and the valve-opening coil have equal current, the resistance of the holding coil is greater than that of the valve-opening coil, and the electromagnetic force for holding the valve body in the valve-opening state is mainly provided by the holding coil.
In one embodiment, the valve core comprises a first fixed shaft, a first movable shaft and a bonnet, one end of the first movable shaft is detachably matched with the first fixed shaft, the other end of the first movable shaft is connected with the bonnet, and one end of the first movable shaft, which is close to the bonnet, is also movably connected with the movable part.
In one embodiment, the elastic member is located between the first moving shaft and the first fixing shaft, and two ends of the elastic member are elastically abutted to the first moving shaft and the first fixing shaft respectively.
In one embodiment, the valve opening assembly further includes a first bracket, the first bracket has a first cavity for accommodating the valve element, and the valve opening coil is wound around the periphery of the first bracket.
In one embodiment, the transmission member includes a second fixed shaft and a second movable shaft, one end of the second movable shaft is detachably engaged with the second fixed shaft, and the other end of the second movable shaft is movably connected to the connecting portion.
In one embodiment, the maintaining assembly further comprises a second bracket, the second bracket is provided with a second cavity for accommodating the transmission piece, and the maintaining coil is wound on the periphery of the second bracket.
In one embodiment, the movable portion is located between the rotating portion and the connecting portion; or, the rotating part is located between the movable part and the connecting part.
In one embodiment, a valve cavity is arranged in the valve body, a valve port communicated with the valve cavity and a through port communicated with the valve cavity are arranged on the valve body, one end of the valve core is located in the valve cavity, the valve core is used for plugging the valve port, the lever is located in the valve cavity, and the rotating part is movably connected with the side wall of the valve cavity.
The second technical problem is solved by the following technical solutions:
a gas appliance comprises the electromagnetic valve.
Compared with the background art, the gas appliance provided by the utility model has the following beneficial effects: when the electromagnetic valve starts to work, the valve opening coil is electrified, and current flows through the valve opening coil, so that large electromagnetic force can be generated instantly, and the valve core is switched from a valve closing state to a valve opening state quickly. After the valve core enters the valve opening state, the coil is kept electrified, and the generated electromagnetic force keeps the valve core in the valve opening state through the transmission piece and the lever. Because the distance between the rotating part and the connecting part is larger than the distance between the rotating part and the movable part, according to the lever principle, the electromagnetic force provided by the maintaining coil is smaller than the elastic force of the elastic part, and the maintaining coil can also maintain the valve core in the valve opening state, so that the electromagnetic force required for maintaining the valve core in the valve opening state is reduced, the power consumption is effectively reduced, and if a dry battery is used for supplying power, the service life of the dry battery is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic valve according to an embodiment of the present invention in a power-off state, where a valve core is in a valve-closed state;
FIG. 2 is a schematic structural diagram of the solenoid valve shown in FIG. 1 in a power-on state, with the valve core in an open state;
FIG. 3 is a schematic diagram of a lever of the solenoid valve shown in FIG. 1;
fig. 4 is a schematic circuit diagram of a solenoid valve according to an embodiment of the present invention.
The meaning of the reference symbols in the drawings is:
the valve body 10, the first fixed shaft 11, the first collar 111, the positioning groove 112, the first moving shaft 12, the first groove 121, the first limit groove 122, the bonnet 13, the valve opening assembly 20, the valve opening coil 21, the first bracket 22, the first guide cylinder 23, the first seal ring 24, the holding assembly 30, the holding coil 31, the transmission member 32, the lever 33, the rotating portion 331, the moving portion 332, the connecting portion 333, the moving groove 334, the connecting groove 335, the second fixed shaft 34, the second collar 341, the second moving shaft 35, the second groove 351, the second limit groove 352, the second bracket 36, the second guide cylinder 37, the second seal ring 38, the elastic member 40, the valve body 50, the valve cavity 51, the valve port 52, the through hole 53, the first magnetic guide shell 60, the first accommodating space 61, the first magnetic guide frame 62, the first magnetic guide plate 63, the first inner plate body 64, the first outer plate body 65, the first magnetic seal ring 66, the second magnetic guide shell 70, and the second accommodating space 71, a second magnetic conduction frame 72, a second magnetic conduction plate 73, a second inner plate 74, a second outer plate 75 and a second sealing ring 76.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 to 3, a solenoid valve according to an embodiment of the present invention is shown. Referring to fig. 1, the solenoid valve includes a valve core 10, a valve opening assembly 20, a maintaining assembly 30, an elastic member 40 and a valve body 50. The valve opening unit 20 includes a valve opening coil 21, and the valve plug 10 is driven to enter a valve opening state after the valve opening coil 21 is energized. The maintaining assembly 30 includes a maintaining coil 31, a transmission member 32 and a lever 33, the lever 33 has a rotating portion 331, a moving portion 332 and a connecting portion 333 movably connected with the valve body 50, the valve core 10 and the transmission member 32 in a one-to-one correspondence, and a distance L between the rotating portion 331 and the connecting portion 3332Is larger than the distance L between the rotating part 331 and the moving part 3321. The elastic member 40 is used to drive the valve body 10 to a valve-closed state after the valve-opening coil 21 and the holding coil 31 are both deenergized. When the valve element 10 is driven to the open state by energizing the valve coil 21, the valve element 10 is energized, and then the holding coil 31 is energized, and the force for holding the valve element 10 in the open state is applied to the lever 33 by the holding coil 31 via the transmission member 32.
Compared with the background art, the electromagnetic valve has the beneficial effects that: when the solenoid valve starts to operate, the valve opening coil 21 is energized, and the current flows through the valve opening coil 21, so that a large electromagnetic force is generated instantaneously, and the valve element 10 is switched from the valve closing state to the valve opening state quickly. After the valve element 10 enters the valve-open state, the coil 31 is kept energized, and the valve element 10 is held in the valve-open state by the generated electromagnetic force via the transmission 32 and the lever 33. Due to the distance L between the rotating part 331 and the connecting part 3332Is larger than the distance L between the rotating part 331 and the moving part 3321According to the principle of the lever 33, the electromagnetic force provided by the maintaining coil 31 is smaller than the elastic force of the elastic member 40, and the maintaining coil 31 can also maintain the valve core 10 in the valve-opened state, so that the electromagnetic force required for maintaining the valve core 10 in the valve-opened state is reduced, the power consumption is effectively reduced, and the service life of a dry battery is prolonged if the dry battery is used for supplying power.
Specifically, the elastic force for driving the valve body 10 into the valve-closed state by the elastic member 40 is set to F1The electromagnetic force for maintaining the valve body 10 in the valve-open state by the maintaining coil 31 is F2According to the principle of the lever 33, there is the following relation:
F1×L1＝F2×L2
if the distance length L2Is L1N times of (1), if n is greater than 1, then F2Is F1Is/are as follows
Thereby maintaining the electromagnetic force provided by the coil 31 as the elastic force of the elastic member 40
In this case, the valve body 10 can be maintained in the valve-open state.
In addition, the formula of the electromagnetic force is as follows:
wherein:
f-electromagnetic force
N-number of turns of coil
I-intensity of current
μ0Magnetic permeability in vacuum
KfMagnetic leakage coefficient
Delta-air gap length
S-magnetic circuit cross section
From the above formula analysis, under the condition that other factors such as the number of turns of the coil, the vacuum magnetic conductivity, the magnetic leakage coefficient, the air gap length, the magnetic path cross section and the like are not changed,the current required for maintaining the coil 31 is only required to be supplied to the valve-opening coil 21 alone
The valve body 10 can be maintained in the open state, and the current input to the maintaining coil 31 is small, which is advantageous in reducing the power consumption.
The resistance of the holding coil 31 is much larger than that of the valve-opening coil 21. Further, the number of turns of the holding coil 31 is larger than that of the valve-opening coil 21.
In the present embodiment, when the maintaining coil 31 is energized, the maintaining coil 31 is connected in series with the valve-opening coil 21, and the maintaining coil 31 is energized in series with the valve-opening coil 21, and since the current flowing through the maintaining coil 31 and the valve-opening coil 21 is equal in magnitude and the resistance of the maintaining coil 31 is larger than the resistance of the valve-opening coil 21, the current flowing through the maintaining coil 31 and the valve-opening coil 21 is small, and the electromagnetic force for maintaining the valve body 10 in the valve-open state is mainly provided by the maintaining coil 31.
Specifically, referring to fig. 4, a first end of the valve-opening coil 21 serves as a common terminal, the common terminal serves as a positive terminal or a negative terminal shared by the valve-opening coil 21 and the holding coil 31, a first end of the holding coil 31 serves as a holding terminal, a second end of the holding coil 31 is connected to a second end of the valve-opening coil 21, and the movable portions 332 of the valve-opening coil 21 and the holding coil 31 are led out through a lead wire to serve as valve-opening terminals. In the present embodiment, the common terminal serves as a negative terminal common to the valve-opening coil 21 and the holding coil 31, and accordingly, the valve-opening terminal serves as a positive terminal of the valve-opening coil 21, and the holding terminal serves as a positive terminal of the holding coil 31. When the valve opening terminal is electrically conducted with the public end, the valve opening coil 21 is electrified; when the sustain terminal is electrically conducted to the common terminal, the sustain coil 31 is energized.
When the solenoid valve starts to operate, the valve-opening coil 21 is energized, and at this time, the current flows through the valve-opening coil 21; alternatively, the valve opening coil 21 and the holding coil 31 may be energized simultaneously, and since the resistance of the holding coil 31 is much larger than that of the valve opening coil 21, the holding coil 31 is short-circuited, all the current flows through the valve opening coil 21, and the resistance of the valve opening coil 21 is small, so that the current of the switching coil is large, and a large electromagnetic force is instantaneously generated, and the valve body 10 is rapidly switched from the valve closing state to the valve opening state. Then, the valve opening coil 21 is deenergized, the maintaining coil 31 is energized, at this time, the valve opening coil 21 and the maintaining coil 31 are connected in series to a circuit, a current flows through the valve opening coil 21 and the maintaining coil 31, the magnitude of the current passing through the maintaining coil 31 and the valve opening coil 21 is equal, the resistance of the maintaining coil 31 is larger than that of the valve opening coil 21, the current passing through the maintaining coil 31 and the valve opening coil 21 is much smaller than that when the valve opening coil 21 is energized alone, and the electromagnetic force for maintaining the valve body 10 in the valve opening state is mainly provided by the maintaining coil 31, that is, the electromagnetic force generated by the maintaining coil 31 is transmitted to the lever 33 through the transmission member 32, so that the valve body 10 is maintained in the valve opening state. When both the valve opening coil 21 and the maintaining coil 31 are deenergized, the electromagnetic force disappears, and the valve body 10 is returned from the valve opening state to the valve closing state by the elastic member 40.
Of course, in other embodiments, the common terminal may also be used as the positive terminal shared by the valve-opening coil 21 and the maintaining coil 31, and accordingly, the valve-opening terminal is used as the negative terminal of the valve-opening coil 21, and the maintaining terminal is used as the negative terminal of the maintaining coil 31.
Of course, in another embodiment, the valve-opening coil 21 and the holding coil 31 are separately connected to a circuit, so that the holding coil 31 is in a deenergized state when the valve-opening coil 21 is energized, and the valve-opening coil 21 is in a deenergized state when the holding coil 31 is energized.
Referring to fig. 1, the valve core 10 includes a first fixed shaft 11, a first movable shaft 12 and a bonnet 13, the first movable shaft 12 is disposed coaxially with the first fixed shaft 11, one end of the first movable shaft 12 is detachably engaged with the first fixed shaft 11, the other end of the first movable shaft 12 is connected with the bonnet 13, and one end of the first movable shaft 12 close to the bonnet 13 is further movably connected with a movable portion 332 of the lever 33. The first fixed shaft 11 and the first movable shaft 12 are both iron cores, so that when the valve opening coil 21 is energized, the first movable shaft 12 is attracted to the first fixed shaft 11 by the electromagnetic force, the first movable shaft 12 moves the bonnet 13 in a direction approaching the first fixed shaft 11 against the elastic force of the elastic member 40, and the valve element 10 is switched from the closed state to the open state.
Referring to fig. 2, further, a first protruding ring 111 is disposed at one end of the first fixed shaft 11 close to the first moving shaft 12, and the first protruding ring 111 is annular. One end of the first movable shaft 12 close to the first fixed shaft 11 is provided with a first groove 121, and the first groove 121 is annular. When first moving axle 12 adsorbs mutually with first fixed axle 11, first bulge loop 111 inserts to first recess 121 in, is favorable to guaranteeing the stability of adsorbing mutually between first moving axle 12 and the first fixed axle 11. Of course, in other embodiments, a first groove 121 may be formed at one end of the first fixed shaft 11 close to the first moving shaft 12, and a first convex ring 111 for being fitted and inserted with the first groove 121 may be disposed at one end of the first moving shaft 12 close to the first fixed shaft 11.
Referring again to fig. 1, in some embodiments, the valve opening assembly 20 further includes a first bracket 22, and the first bracket 22 is provided with a first cavity for accommodating the valve core 10. The valve-opening coil 21 is wound around the outer periphery of the first holder 22. Specifically, the first support 22 is generally "I" -shaped in configuration.
In some embodiments, as shown in fig. 2, the valve opening assembly 20 further includes a first guide cylinder 23 fixed in the first cavity, the first fixed shaft 11 and the first movable shaft 12 are both disposed in the first guide cylinder 23, the first fixed shaft 11 is fixed relative to the first guide cylinder 23, and an outer wall surface of the first movable shaft 12 is in sliding fit with an inner wall surface of the first guide cylinder 23. The first guide cylinder 23 is arranged to guide the movement of the first moving shaft 12, so that the first moving shaft 12 can move linearly along a preset direction without deflection, and the movement stability of the first moving shaft 12 can be ensured.
Further, the first guide cylinder 23 and the first fixed shaft 11 are provided with a first sealing ring 24, the first sealing ring 24 is sleeved on the first fixed shaft 11, the inner peripheral wall of the first guide cylinder 23 extrudes the first sealing ring 24, and the first sealing ring 24 can enable the first fixed shaft 11 and the first guide cylinder 23 to form reliable positioning and sealing matching.
In some embodiments, as shown in fig. 1, the solenoid valve further includes a first magnetic guiding casing 60, the first magnetic guiding casing 60 has a first receiving space 61 for receiving the valve opening assembly 20 therein, and one end of the valve core 10 movably penetrates out of the first magnetic guiding casing 60, that is, the end of the first moving shaft 12 connected to the valve cap 13 extends out of the first magnetic guiding casing 60 through the first guiding cylinder 23. The first magnetic guiding shell 60 can guide the magnetic lines of force generated by the valve opening coil 21, thereby enhancing the magnetic field.
Specifically, as shown in fig. 2, the first magnetic conductive shell 60 includes a first magnetic conductive frame 62 and a first magnetic conductive plate 63. The first magnetic conduction frame 62 is U-shaped. A first accommodating space 61 is defined between the first magnetic conduction frame 62 and the first magnetic conduction plate 63, and a through hole for the end of the movable valve element 10 to pass through is formed in the first magnetic conduction plate 63. Further, the first magnetic conducting plate 63 includes a first inner plate 64 and a first outer plate 65, which are overlapped with each other, and the first inner plate 64 covers the U-shaped open end of the first magnetic conducting frame 62.
In some embodiments, the electromagnetic valve further includes a first sealing ring 66 disposed between the first magnetic conductive plate 63 and the first guide cylinder 23, the first sealing ring 66 is sleeved on the first guide cylinder 23, and the first sealing ring 66 presses the first inner plate 64 and the first outer plate 65. The arrangement of the first sealing ring 66 can effectively improve the stability and the sealing performance of the cooperation between the first guide cylinder 23 and the first inner plate 64 and the first outer plate 65.
Referring to fig. 1, the transmission member 32 is disposed in parallel with the valve core 10, the transmission member 32 includes a second fixed shaft 34 and a second movable shaft 35, the second movable shaft 35 is disposed coaxially with the second fixed shaft 34, an axial direction of the second movable shaft 35 is parallel to an axial direction of the first movable shaft 12, one end of the second movable shaft 35 is detachably engaged with the second fixed shaft 34, and the other end of the second movable shaft 35 is movably connected to the connecting portion 333 of the lever 33. Since the second stationary shaft 34 and the second moving shaft 35 are both iron cores, when the maintaining coil 31 is energized, the second moving shaft 35 is attracted to the second stationary shaft 34 by the electromagnetic force, and the second moving shaft 35 maintains the valve body 10 in the open state by the lever 33.
Further, as shown in fig. 2, a second protruding ring 341 is disposed at one end of the second fixed shaft 34 close to the second moving shaft 35, the second protruding ring 341 is annular, a second groove 351 is disposed at one end of the second moving shaft 35 close to the second fixed shaft 34, the second groove 351 is annular, and when the second moving shaft 35 and the second fixed shaft 34 attract each other, the second protruding ring 341 is inserted into the second groove 351, which is beneficial to ensuring the stability of the attraction between the second moving shaft 35 and the second fixed shaft 34. Of course, in other embodiments, the second groove 351 may be formed at one end of the second fixed shaft 34 close to the second moving shaft 35, and the second convex ring 341 for mating with the second groove 351 may be disposed at one end of the second moving shaft 35 close to the second fixed shaft 34.
In the embodiment shown in fig. 1, the rotating portion 331 and the connecting portion 333 are located at both ends of the lever 33, and the movable portion 332 is located between the rotating portion 331 and the connecting portion 333. Of course, in other embodiments, the movable portion 332 and the connecting portion 333 may be located at both ends of the lever 33, and the rotating portion 331 may be located between the movable portion 332 and the connecting portion 333. Further, referring to fig. 2 and 3, the movable portion 332 is provided with a movable groove 334, the first moving shaft 12 is provided with a first limiting groove 122, the movable groove 334 is movably sleeved on the first moving shaft 12 through the first limiting groove 122, and the movable portion 332 of the lever 33 can perform a rotational motion within a predetermined range in the first limiting groove 122 and can move along the axial direction of the first moving shaft 12 along with the first moving shaft 12. The connecting portion 333 is provided with a connecting groove 335, the second moving shaft 35 is provided with a second limiting groove 352, the connecting groove 335 is movably sleeved on the second moving shaft 35 through the second limiting groove 352, the connecting portion 333 of the lever 33 can perform a rotation movement within a preset range in the second limiting groove 352, and can move along the axial direction of the second moving shaft 35 along with the second moving shaft 35.
In some embodiments, the maintaining assembly 30 further comprises a second bracket 36, the second bracket 36 being provided with a second cavity for accommodating the transmission member 32. The maintaining coil 31 is wound around the outer periphery of the second holder 36. Specifically, the second bracket 36 is generally in an "I" configuration.
In some embodiments, the maintaining assembly 30 further includes a second guiding cylinder 37 fixed in the second cavity, the second fixed shaft 34 and the second moving shaft 35 are both disposed in the second guiding cylinder 37, the second fixed shaft 34 is fixed relative to the second guiding cylinder 37, and the outer wall surface of the second moving shaft 35 is in sliding fit with the inner wall surface of the second guiding cylinder 37. The second guide cylinder 37 is arranged to guide the movement of the second moving shaft 35, so that the second moving shaft 35 can move linearly along a preset direction without deflection, and the movement stability of the second moving shaft 35 can be ensured.
Further, a second sealing ring 38 is disposed between the second guiding cylinder 37 and the second fixed shaft 34, the second sealing ring 38 is sleeved on the second fixed shaft 34, the inner circumferential wall of the second guiding cylinder 37 presses the second sealing ring 38, and the second sealing ring 38 can enable the second fixed shaft 34 and the second guiding cylinder 37 to form reliable positioning and sealing fit.
Referring to fig. 1 again, in some embodiments, the solenoid valve further includes a second magnetic guiding casing 70, the second magnetic guiding casing 70 is disposed in parallel with the first magnetic guiding casing 60, a second accommodating space 71 is disposed in the second magnetic guiding casing 70 for accommodating the maintaining assembly 30, and one end of the transmission member 32 movably penetrates out of the second magnetic guiding casing 70, that is, one end of the second moving shaft 35 connected to the lever 33 extends out of the second magnetic guiding casing 70 through the second guiding cylinder 37. The second magnetic conductive shell 70 can guide the magnetic lines generated by the maintaining coil 31, thereby enhancing the magnetic field.
Specifically, as shown in fig. 2, the second magnetic conducting shell 70 includes a second magnetic conducting frame 72 and a second magnetic conducting plate 73. The second magnetic conduction frame 72 is arranged in a U shape. A second accommodating space 71 is defined between the second magnetic conducting plate 73 and the second magnetic conducting frame 72, and a through hole for the driving transmission member 32 to pass through is formed in the second magnetic conducting plate 73. Further, the second magnetic conducting plate 73 includes a second inner plate 74 and a second outer plate 75, which are overlapped with each other, and the second inner plate 74 covers the U-shaped open end of the second magnetic conducting frame 72. Further, the second inner panel 74 is flush with the first inner panel 64, and specifically, the second inner panel 74 is integrally formed with the first inner panel 64. The second outer plate body 75 is flush with the first outer plate body 65.
In some embodiments, the solenoid valve further includes a second sealing ring 76 disposed between the second magnetic conducting plate 73 and the second guiding cylinder 37, the second sealing ring 76 is sleeved on the second guiding cylinder 37, and the second inner plate 74 and the second outer plate 75 press the second sealing ring 76. The arrangement of the second sealing ring 76 can effectively improve the stability and the sealing performance of the cooperation between the second guide cylinder 37 and the second inner plate 74 and the second outer plate 75.
Referring again to fig. 1, the elastic member 40 is a coil spring. In the present embodiment, the elastic member 40 is located between the first moving shaft 12 and the first fixed shaft 11, and two ends of the elastic member 40 are elastically abutted to the first moving shaft 12 and the first fixed shaft 11, respectively. Specifically, a positioning groove 112 is disposed on the first fixed shaft 11, the positioning groove 112 is located at an end of the first fixed shaft 11 close to the first movable shaft 12, the elastic element 40 is accommodated in the positioning groove 112, and an end of the elastic element 40 passes through the first protruding ring 111 and elastically abuts against the first movable shaft 12.
Of course, in other embodiments, the elastic member 40 may also be located between the bonnet 13 and the first magnetically conductive shell 60. Further, the elastic element 40 is movably sleeved on the first moving shaft 12, the elastic element 40 is located between the lever 33 and the first magnetic conductive shell 60, and two ends of the elastic element 40 respectively elastically abut against the lever 33 and the first magnetic conductive shell 60.
The valve body 50 is connected to the first magnetic conductive shell 60 and the second magnetic conductive shell 70, as shown in fig. 2, a valve cavity 51 is disposed in the valve body 50, a valve port 52 communicating with the valve cavity 51 and a through hole 53 communicating with the valve cavity 51 are disposed on the valve body 50, one end of the valve core 10 is disposed in the valve cavity 51, and the valve core 10 is used for sealing the valve port 52. Further, the bonnet 13 of the valve cartridge 10 is located in the valve chamber 51 and corresponds to the valve port 52. It is understood that when the valve opening coil 21 is energized, the first moving shaft 12 and the bonnet 13 are switched from the valve-closed position to the valve-open position by the electromagnetic force, and at this time, a predetermined gap is present between the bonnet 13 and the valve port 52, so that the port 53 communicates with the valve port 52 to form a fluid passage, that is, the valve body 10 enters the valve-open state. When the maintaining coil 31 is energized, both the first fixed shaft 11 and the bonnet 13 are maintained at the valve-open position, that is, the valve body 10 is maintained in the valve-open state. When the maintaining coil 31 and the valve opening coil 21 are both de-energized, the electromagnetic force disappears, the first fixed shaft 11 and the bonnet 13 are driven by the elastic member 40 to return to the closed position, and at this time, the bonnet 13 blocks the valve port 52, the fluid passage is cut off, that is, the valve core 10 enters the closed state. The lever 33 is located in the valve chamber 51, and the rotating portion 331 of the lever 33 is movably connected with the side wall of the valve chamber 51. Specifically, a rotating groove is formed in a side wall of the valve chamber 51, the rotating portion 331 of the lever 33 is movably located in the rotating groove, and the lever 33 can rotate relative to the rotating groove.
The working principle of the electromagnetic valve is as follows:
s1: the valve opening coil 21 is energized, and the current flows through the valve opening coil 21, and the generated electromagnetic force causes the first moving shaft 12 and the second moving shaft 35 to be attracted, so that the first moving shaft 12 moves the bonnet 13 in a direction of approaching the second moving shaft 35, the bonnet 13 is moved away from the valve port 52, the valve port 52 is opened, the port 53 communicates with the valve port 52 to form a fluid passage, that is, the valve body 10 is switched from a closed state to an open state. During the process that the first moving shaft 12 drives the bonnet 13 to move towards the direction close to the second moving shaft 35, the first moving shaft 12 simultaneously drives the lever 33 to rotate counterclockwise, and the lever 33 rotates to drive the second moving shaft 35 to move towards the direction close to the second fixed shaft 34. When the valve port 52 is opened, the second movable shaft 35 contacts the second fixed shaft 34. In addition, in this step, the maintenance coil 31 may be in an energized state or a de-energized state.
S2: the maintaining coil 31 is energized, a current passes through the valve opening coil 21 and the maintaining coil 31, the generated electromagnetic force attracts the second moving shaft 35 to the second fixed shaft 34, and the second moving shaft 35 maintains the valve body 10 in the valve opened state through the lever 33. In this step, the valve-opening coil 21 may be in a power-off state.
S3: the valve opening coil 21 and the maintaining coil 31 are both de-energized, the electromagnetic force disappears when the valve core 10 is kept in the valve opening state, the elastic member 40 pushes the first moving shaft 12 to move in the direction away from the first fixed shaft 11, the first moving shaft 12 drives the valve cap 13 to close the valve port 52, that is, the valve core 10 is switched from the valve opening state to the valve closing state. During the process that the elastic member 40 pushes the first moving shaft 12 to move away from the first fixed shaft 11, the first moving shaft 12 drives the lever 33 to rotate clockwise, and the lever 33 drives the second moving shaft 35 to move away from the second fixed shaft 34 when rotating. In the valve-closed state, the lever 33 is perpendicular to the axial directions of the first fixed shaft 11 and the second fixed shaft 34.
The utility model also provides a gas appliance comprising the electromagnetic valve of any one of the embodiments.
Compared with the background art, the gas appliance of the utility model has the following beneficial effects: when the solenoid valve starts to operate, the valve opening coil 21 is energized, and the current flows through the valve opening coil 21, so that a large electromagnetic force is generated instantaneously, and the valve element 10 is switched from the valve closing state to the valve opening state quickly. After the valve element 10 enters the valve-open state, the coil 31 is kept energized, and the valve element 10 is held in the valve-open state by the generated electromagnetic force via the transmission 32 and the lever 33. Since the distance between the rotating portion 331 and the connecting portion 333 is greater than the distance between the rotating portion 331 and the movable portion 332, the electromagnetic force provided by the maintaining coil 31 is smaller than the elastic force of the elastic member 40 according to the principle of the lever 33, and the maintaining coil 31 can also maintain the valve body 10 in the valve-opened state, so that the electromagnetic force required for maintaining the valve body 10 in the valve-opened state is reduced, thereby effectively reducing the power consumption, and if a dry battery is used for supplying power, the service life of the dry battery is prolonged.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A solenoid valve, comprising:
a valve body (50);
a valve element (10);
a valve opening assembly (20) which comprises a valve opening coil (21), wherein the valve opening coil (21) drives the valve core (10) to enter a valve opening state after being electrified;
the maintaining assembly (30) comprises a maintaining coil (31), a transmission piece (32) and a lever (33), wherein the lever (33) is provided with a rotating part (331), a movable part (332) and a connecting part (333) which are movably connected with the valve body (50), the valve core (10) and the transmission piece (32) in a one-to-one correspondence manner, and the distance between the rotating part (331) and the connecting part (333) is larger than the distance between the rotating part (331) and the movable part (332);
an elastic member (40) for driving the valve element (10) into a valve-closed state after the valve-opening coil (21) and the maintaining coil (31) are both de-energized;
after the valve opening coil (21) is electrified to drive the valve core (10) to enter the valve opening state, the maintaining coil (31) is electrified, and the maintaining coil (31) provides force for keeping the valve core (10) in the valve opening state to the lever (33) through the transmission piece (32).
2. Solenoid valve according to claim 1, characterized in that the resistance of said maintaining coil (31) is greater than the resistance of said valve-opening coil (21); and/or, when the maintaining coil (31) is electrified, the maintaining coil (31) and the valve opening coil (21) are electrified in series.
3. The electromagnetic valve according to claim 1, characterized in that the valve core (10) comprises a first fixed shaft (11), a first moving shaft (12) and a valve cap (13), one end of the first moving shaft (12) is detachably engaged with the first fixed shaft (11), the other end of the first moving shaft (12) is connected with the valve cap (13), and one end of the first moving shaft (12) close to the valve cap (13) is also movably connected with the movable part (332).
4. The electromagnetic valve according to claim 3, characterized in that the elastic member (40) is located between the first moving shaft (12) and the first fixed shaft (11), and both ends of the elastic member (40) are elastically abutted with the first moving shaft (12) and the first fixed shaft (11), respectively.
5. A solenoid valve according to claim 1 or 3, characterised in that said valve-opening assembly (20) further comprises a first bracket (22), said first bracket (22) being provided with a first cavity for housing said spool (10), said valve-opening coil (21) being provided around the periphery of said first bracket (22).
6. The electromagnetic valve according to claim 1, characterized in that the transmission member (32) comprises a second fixed shaft (34) and a second movable shaft (35), one end of the second movable shaft (35) is detachably engaged with the second fixed shaft (34), and the other end of the second movable shaft (35) is movably connected with the connecting part (333).
7. The solenoid valve according to claim 1 or 6, characterized in that said retaining assembly (30) further comprises a second bracket (36), said second bracket (36) being provided with a second cavity for housing said transmission element (32), said retaining coil (31) being provided around the periphery of said second bracket (36).
8. The solenoid valve according to claim 1, characterized in that said mobile part (332) is located between said rotary part (331) and said connecting part (333); alternatively, the rotating portion (331) is located between the movable portion (332) and the connecting portion (333).
9. The electromagnetic valve according to claim 1, characterized in that a valve cavity (51) is arranged in the valve body (50), a valve port (52) communicated with the valve cavity (51) and a through port (53) communicated with the valve cavity (51) are arranged on the valve body (50), one end of the valve core (10) is positioned in the valve cavity (51), the valve core (10) is used for sealing the valve port (52), the lever (33) is positioned in the valve cavity (51), and the rotating part (331) is movably connected with the side wall of the valve cavity (51).
10. A gas appliance comprising a solenoid valve according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122384945.6U CN216045727U (en) | 2021-09-29 | 2021-09-29 | Electromagnetic valve and gas appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122384945.6U CN216045727U (en) | 2021-09-29 | 2021-09-29 | Electromagnetic valve and gas appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216045727U true CN216045727U (en) | 2022-03-15 |
Family
ID=80547418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122384945.6U Active CN216045727U (en) | 2021-09-29 | 2021-09-29 | Electromagnetic valve and gas appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216045727U (en) |
-
2021
- 2021-09-29 CN CN202122384945.6U patent/CN216045727U/en active Active
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