A multifunctional switch seat assembly and control method thereof

Abstract

The present invention provides a multifunctional switch base assembly and a control method thereof, which solves the problems of fuel oil and gas switching safety, etc., and comprises a switch base, a switch knob and a gas switch assembly and an oil circuit switch assembly controlled by the switch knob are installed on the switch base, the gas switch assembly and the oil circuit switch assembly are connected to a control module, and the control module is connected to a battery and a high-voltage package. The present invention has the advantages of high safety and stable switching.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel switches, and in particular relates to a multifunctional switch seat assembly and a control method thereof. Background Art

[0002] The task of the fuel supply system is to prepare a certain amount and concentration of combustible mixture according to the requirements of various working conditions of the engine, and supply it to the cylinder so that it can ignite and burn near the end of compression and expand to do work. Finally, the supply system should also discharge the combustion product-exhaust gas into the atmosphere. One of the keys to dual-fuel technology is oil and gas conversion control. The fuel switch is used to switch between fuels automatically or manually, and its quality is also related to the overall performance of the equipment. Currently, the generator sets commonly used for gas (liquefied petroleum gas or natural gas) and liquid (gasoline, etc.) fuels generally include a switch seat, a valve body, and a knob. By manually operating the knob, the supply of one fuel can be cut off and the supply of another fuel can be connected at the same time to achieve switching between the two fuels. However, in actual use, the simple mechanical control valve body to achieve fuel switching has certain defects in safety and user convenience.

[0003] In order to solve the deficiencies in the prior art, people have conducted long-term explorations and proposed a variety of solutions. For example, a Chinese patent document discloses a three-fuel conversion switch [202222025966.3], which includes a housing, a valve core, a conversion switch mounting plate and a rotating handle, the lower end of the valve core is inserted into the housing, the conversion switch mounting plate is installed on the top surface of the housing, the upper end of the valve core is upwardly passed through the conversion switch mounting plate and is provided with a rotating handle that can drive the valve core to rotate, the housing is provided with an inlet nozzle and an outlet nozzle for fuel, an air inlet pipe and an air outlet pipe for gas, the valve core is provided with a guide groove for connecting the inlet nozzle and the outlet nozzle, and an LNG fuel hole and an NG fuel hole for connecting the air inlet pipe and the air outlet pipe.

[0004] The above solution solves the problem of switching between liquefied petroleum gas and liquefied natural gas to a certain extent, but the solution still has many shortcomings, such as the inability to ensure the safety of switching between fuel oil and gas. Summary of the invention

[0005] The object of the present invention is to provide a multifunctional switch seat assembly with reasonable design and high safety in use in view of the above problems.

[0006] Another object of the present invention is to provide a control method for a flexible multifunctional switch seat assembly in view of the above problems.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a multifunctional switch seat assembly, including a switch seat, on which a switch knob and a gas switch assembly and an oil circuit switch assembly whose on and off are controlled by the switch knob are installed, the gas switch assembly and the oil circuit switch assembly are connected to a control module, and the control module is connected to a battery and a high-voltage package.

[0008] In the above-mentioned multifunctional switch seat assembly, the gas switch assembly includes a second micro switch connected to the control module, and the second micro switch is connected to the gas solenoid valve and controls the opening of the gas channel.

[0009] In the above-mentioned multifunctional switch seat assembly, the control module is connected to a third micro switch, and the third micro switch controls the gas channel and the fuel channel to be closed.

[0010] In the above-mentioned multifunctional switch seat assembly, the oil circuit switch assembly includes a first micro switch and a carburetor solenoid valve connected to the control module, the switch seat is connected to the oil switch, the first micro switch controls the opening of the carburetor solenoid valve, and the oil switch controls the opening or closing of the fuel channel.

[0011] In the above-mentioned multifunctional switch seat assembly, the switch seat has a switching cavity for rotating and assembling the switch knob. The first microswitch, the second microswitch and the third microswitch are selectively triggered as the switch knob rotates. The oil switch is installed in the center of the switching cavity and is opened and closed as the switch knob rotates.

[0012] In the above-mentioned multifunctional switch seat assembly, a limit groove is provided at the bottom of the switching cavity, and a limit steel ball is installed in the limit groove through a limit spring, which can be pressed and engaged with the switch knob for limit; a ball head plunger is movably installed on the side of the switch knob, and a card slot for inserting the ball head plunger into the limit is provided on the inner side of the switching cavity, and the plug-in limit position of the ball head plunger and the card slot is opposite to the second micro switch and the first micro switch.

[0013] In the above-mentioned multifunctional switch seat assembly, a timing reset assembly is arranged between the switch knob and the switch seat; the timing reset assembly includes a reset motor installed in the switch seat, the output end of the reset motor faces upward and is connected to a reset gear set, the lower end of the switch knob has a reset gear ring meshing with the reset gear set, the reset motor is connected to the control module, and a timing switch connected to the control module is installed on the switch seat; a first guide surface is arranged on the inner side of the switch seat and is inclined relative to the radial direction of the switch seat, the ball plunger has a limit hook extending to the inside of the switch knob, and the limit hook is pressed against the first guide surface; a second guide surface is arranged on the reset gear ring, and the limit steel ball is pressed against the second guide surface.

[0014] A control method for a multifunctional switch seat assembly comprises the following steps:

[0015] S1: The switch knob is in the first position relative to the switch seat, the second micro switch is triggered, the gas solenoid valve is opened and the gas channel is opened;

[0016] S2: The switch knob rotates to the second position relative to the switch base, the third micro switch is triggered, the gas solenoid valve and the oil switch are closed, and the gas channel and the fuel channel are closed;

[0017] S3: The switch knob rotates relative to the switch base to the third position, the oil switch is closed, and the fuel channel is opened;

[0018] S4: The switch knob rotates to the fourth position relative to the switch base, the first micro switch is triggered, the carburetor solenoid valve opens, and the fuel channel opens.

[0019] In the above-mentioned control method of a multifunctional switch seat assembly, in step S1 and step S4, the high-voltage package is started and the gas or fuel oil is ignited.

[0020] In the above-mentioned control method of a multifunctional switch socket assembly, in step S2, the battery and the control module are disconnected, and the circuit connected to the control module is cut off.

[0021] In the above-mentioned control method of a multifunctional switch seat assembly, in step S3, the carburetor solenoid valve is opened.

[0022] In the above-mentioned control method of a multifunctional switch seat assembly, steps S2 and S3 press the timing switch, the reset motor starts to drive the switch knob to rotate automatically, and the control module controls the switch knob to delay switching between the second position and the third position.

[0023] Compared with the existing technology, the advantages of the present invention are: the oil switch is mechanically controlled to be on and off, and the gas and fuel channels are controlled to be on and off by solenoid valves, which improves the safety of fuel switching and the convenience of user operation compared to conventional mechanically controlled valve bodies; the switch seat assembly has a built-in limit structure, which improves the rotation limit stability of the switch knob and ensures normal on and off points; an additional fuel off state is added, which only turns off the oil switch without cutting off the power supply to the fuel solenoid valve, thereby reducing the residual fuel inside the carburetor and eliminating the need for manual oil draining; a position in which all channels are closed is added between the switching between fuel and gas to avoid safety problems caused by arbitrary switching of the two fuels. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the switch base of the present invention.

[0026] Figure 3 It is a structural expansion diagram of the present invention.

[0027] Figure 4 It is the control principle diagram of the present invention.

[0028] Figure 5 It is another structural schematic diagram of the switch base of the present invention.

[0029] Figure 6 It is a structural schematic diagram of the switch knob of the present invention.

[0030] In the figure, switch seat 1, switching chamber 11, limiting groove 12, limiting spring 13, limiting steel ball 14, ball plunger 15, slot 16, switch knob 2, gas switch assembly 3, second micro switch 31, gas solenoid valve 32, oil circuit switch assembly 4, first micro switch 41, carburetor solenoid valve 42, oil switch 43, control module 5, battery 51, high-voltage package 52, third micro switch 53, timing reset assembly 6, reset motor 61, reset gear set 62, reset gear ring 63, timing switch 64, first guide surface 65, limiting hook 66, second guide surface 67. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Embodiment 1

[0033] like Figure 1-Figure 4 As shown, a multifunctional switch seat assembly includes a switch seat 1 that cooperates with an automobile fuel system or a generator set. Different from the existing mechanical fuel switching system, in this embodiment, a switch knob 2 and a gas switch assembly 3 and an oil circuit switch assembly 4 controlled by the switch knob 2 are installed on the switch seat 1, wherein the gas switch assembly 3 adopts circuit control, and the oil circuit switch assembly 4 adopts a combination of mechanical control and circuit control. The gas switch assembly 3 and the oil circuit switch assembly 4 are connected to a control module 5, and the control module 5 is connected to a battery 51 and a high-voltage package 52. The control module 5 receives circuit signals and controls the corresponding electromagnetic valve body to be turned on and off, wherein the battery 51 supplies power to the control module 5 and other circuits, and the high-voltage package 52 cooperates with the corresponding transformer to ignite the fuel.

[0034] Specifically, the gas switch assembly 3 is controlled by a circuit, and specifically includes a second micro switch 31 connected to the control module 5. The second micro switch 31 is connected to the gas solenoid valve 32 and controls the opening of the gas channel. The gas solenoid valve 32 remains closed under normal conditions, and the gas solenoid valve 32 starts to open when the second micro switch 31 is triggered.

[0035] In order to realize the on and off of the control module 5 and the whole circuit system, the control module 5 is connected to a third micro switch 53, and the third micro switch 53 controls the closing of the gas channel and the fuel channel. The control module 5 is connected to the battery 51 for power supply under normal conditions. When the third micro switch 53 is triggered, the control module 5 is disconnected from the battery 51 and the whole circuit system and the controlled solenoid valve are closed.

[0036] Furthermore, unlike the existing mechanical oil circuit control system, the oil circuit switch assembly 4 includes a first micro switch 41 and a carburetor solenoid valve 42 connected to the control module 5, and the switch seat 1 is connected to an oil switch 43. The first micro switch 41 controls the carburetor solenoid valve 42 to open, and the oil switch 43 controls the fuel channel to open or close. The switch knob 2 rotates and drives the oil switch 43 to open or close. The oil switch 43 is connected to the external oil supply pipeline, and the carburetor solenoid valve 42 controls the internal oil circuit to open and close. The oil switch 43 has a pin shaft plugged into the switch knob 2 to control the rotation of the internal valve seat.

[0037] In addition, the switch base 1 is disc-shaped as a whole, and has a switching cavity 11 for the switch knob 2 to rotate and assemble. A ridge-shaped twist handle is left on the top of the switch knob 2, and the rotation range of the switch knob 2 is usually controlled at 180-270°. The first micro switch 41, the second micro switch 31 and the third micro switch 53 are triggered one by one as the switch knob 2 rotates. The oil switch 43 is installed in the center of the switching cavity 11 and is opened and closed as the switch knob 2 rotates. The switch knob 2 rotates at a fixed angle of 90°, 45°, 60°, 30°, etc.

[0038] At the same time, in order to improve the rotation limit stability of the switch knob 2 and ensure that it is locked after rotating to the specified position, a limit groove 12 is set at the bottom of the switching cavity 11, and a limit steel ball 14 that can press and engage with the switch knob 2 for limit is installed in the limit groove 12 through a limit spring 13; a ball plunger 15 is movably installed on the side of the switch knob 2, and a clamping groove 16 for inserting the ball plunger 15 into the limit is set on the inner side of the switching cavity 11, and the plug-in limit position of the ball plunger 15 and the clamping groove 16 is opposite to the second micro switch 31 and the first micro switch 41. The ball plunger 15 and the limit steel ball 14 both adopt a sliding telescopic structure, which uses the top pressure to embed into the corresponding groove body for limit. When the switch knob 2 rotates to the specified angle, it is frustrated. At this time, the switch knob 2 is limited to the specified position, and the internal first micro switch 41, the second micro switch 31 or the third micro switch 53 is under pressure and sends a control signal to the control module 5.

[0039] Embodiment 2

[0040] like Figure 5-Figure 6As shown, the structure, principle and specific implementation steps of this embodiment are similar to those of the first embodiment, except that, in order to achieve delayed response of the gas switch assembly 3 and the oil circuit switch assembly 4, a timing reset assembly 6 is provided between the switch knob 2 and the switch base 1. In this embodiment, the control module 5 controls the response time, and the switch knob 2 is driven by mechanical means.

[0041] In this embodiment, the timing reset component 6 is concentrated between the switch base 1 and the switch knob 2, including a reset motor 61 installed in the switch base 1, the output end of the reset motor 61 faces upward and is connected to a reset gear set 62, the lower end of the switch knob 2 has a reset gear ring 63 that meshes with the reset gear set 62, the reset motor 61 is connected to the control module 5, and a timing switch 64 connected to the control module 5 is installed on the switch base 1; the timing switch 64 is manually pressed to trigger, and the control module 5 receives the control signal, controls the reset motor 61 to rotate and drives the switch knob 2 to rotate a fixed angle.

[0042] Since there is a limiting structure between the switch knob 2 and the switch seat 1, in order to ensure that the limiting steel ball 14 and the ball plunger 15 can normally leave the working position, a first guide surface 65 is provided on the inner side of the switch seat 163 and is radially inclined relative to the switch seat 1. The ball plunger 15 has a limiting hook 66 extending to the inside of the switch knob 2, and the limiting hook 66 presses against the first guide surface 65; the reset gear ring 63 is provided with an inclined second guide surface 67, and the limiting steel ball 14 presses against the second guide surface 67. The first guide surface 65 and the second guide surface 67 guide the limiting steel ball 14 and the ball plunger 15 to slide obliquely and smoothly, reducing the resistance to their leaving the working position.

[0043] A control method for a multifunctional switch seat assembly controls a gas switch assembly 3 and an oil circuit switch assembly 4 according to the rotation angle of a switch knob 2. The switch knob 2 can rotate counterclockwise or clockwise. The following steps are clockwise rotation, and the steps are reversed to rotate counterclockwise to switch the state:

[0044] S1: In the initial state, the switch knob 2 is in the first position relative to the switch base 1, the second micro switch 31 is triggered by pressure, the gas solenoid valve 32 is opened and the gas channel is opened; the oil switch 43 and the carburetor solenoid valve 42 are both in the closed state, and this state is in the single gas supply state;

[0045] S2: When it is necessary to switch to the fuel supply state, the switch knob 2 is first rotated clockwise to the second position relative to the switch base 1, the third micro switch 53 is triggered by pressure, the gas solenoid valve 32 and the oil switch 43 are closed, the gas channel and the fuel channel are closed, and the control module 5 is also in the power-off state at this time;

[0046] S3: the switch knob 2 is rotated clockwise relative to the switch base 1 to the third position, the oil switch 43 is closed, but the fuel channel is opened. In this state, the fuel in the carburetor is mainly used up;

[0047] S4: the switch knob 2 rotates to the fourth position relative to the switch base 1, the first micro switch 41 is triggered, the carburetor solenoid valve 42 is opened, and the fuel channel is opened. At this time, the gas solenoid valve 32 is in a closed state, which is a single fuel supply state.

[0048] In addition, in step S1 and step S4, the high-pressure package 52 is started, the gas or fuel is ignited, and the high-pressure package 52 is energized synchronously with the gas solenoid valve 32 or the carburetor solenoid valve 42 to realize the fuel ignition and start the power system.

[0049] At the same time, in order to improve its safety, step S2 disconnects the battery 51 and the control module 5, and cuts off the circuit connected to the control module 5. This step mainly ensures that all circuits are closed and power is cut off during the switching process between gas and fuel to prevent the fuel from being still in a ignited state.

[0050] It can be seen that in step S3, the carburetor solenoid valve 42 is open but the oil switch 43 is closed, and the residual fuel flows in the internal fuel pipeline, and the fuel in the carburetor is fully drained and used up without manual draining. Compared with the conventional three-gear fuel switching system, the four-gear gear adopted in this embodiment avoids the intersection of fuel and gas when switching, and avoids the safety hazard caused by the backfire of the fuel inside the pipeline.

[0051] Among them, step S2 and step S3 press the timing switch 64, the reset motor 61 starts to drive the switch knob 2 to rotate automatically, and the control module 5 controls the switch knob 2 to switch between the second position and the third position with delayed switching. Under normal conditions, when the switch knob 2 switches from the third position to the second position, its response time is controlled within 2-3 seconds to ensure that the fuel in the carburetor is fully consumed.

[0052] In summary, the principle of this embodiment is that the switch base 1 and the switch knob 2 improve the limiting mode of the gas switch assembly 3 and the oil circuit switch assembly 4 in the full OFF state to avoid the failure of normal power off and closure due to unstable limiting; a fuel closing state is added, which only closes the oil switch 43 and does not cut off the power supply to the carburetor solenoid valve 42, allowing the user to use up the fuel in the carburetor in this state without manually draining the oil; the limit is set in the gas ON and gasoline ON states, and these two states must be switched through the OFF gear to avoid safety problems caused by arbitrary switching between the two fuels.

[0053] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0054] Although the terms switch base 1, switching chamber 11, limiting groove 12, limiting spring 13, limiting steel ball 14, ball plunger 15, slot 16, switch knob 2, gas switch assembly 3, second micro switch 31, gas solenoid valve 32, oil circuit switch assembly 4, first micro switch 41, carburetor solenoid valve 42, oil switch 43, control module 5, battery 51, high-voltage package 52, third micro switch 53 and the like are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A multifunctional switch base assembly, comprising a switch base (1), a switch knob (2) and a gas switch assembly (3) and an oil circuit switch assembly (4) controlled on and off by the switch knob (2) being mounted on the switch base (1), characterized in that: The gas switch assembly (3) and the oil circuit switch assembly (4) are connected to a control module (5), and the control module (5) is connected to a battery (51) and a high-voltage package (52); the gas switch assembly (3) comprises a second micro switch (31) connected to the control module (5), and the second micro switch (31) is connected to a gas solenoid valve (32) and controls the opening of a gas channel; the control module (5) is connected to a third micro switch (53), and the third micro switch (53) controls the closing of a gas channel and a fuel channel; The oil circuit switch assembly (4) comprises a first micro switch (41) and a carburetor solenoid valve (42) connected to a control module (5); the switch seat (1) is connected to an oil switch (43); the first micro switch (41) controls the carburetor solenoid valve (42) to open, and the oil switch (43) controls the fuel channel to open or close; the switch seat (1) comprises a switching cavity (11) for a switch knob (2) to be rotatably assembled; the oil switch (43) is mounted at the center of the switching cavity (11) and is opened and closed as the switch knob (2) rotates.

2. A multifunctional switch seat assembly according to claim 1, characterized in that: The first micro switch (41), the second micro switch (31) and the third micro switch (53) are selectively triggered as the switch knob (2) rotates.

3. A multifunctional switch seat assembly according to claim 2, characterized in that: A limit groove (12) is provided at the bottom of the switching cavity (11), and a limit steel ball (14) is installed in the limit groove (12) through a limit spring (13) and can be pressed against and engaged with the switch knob (2) for limit. A ball plunger (15) is movably installed on the side of the switch knob (2), and a slot (16) for inserting the ball plunger (15) for limit is provided on the inner side of the switching cavity (11), and the plug-in limit position of the ball plunger (15) and the slot (16) is opposite to the second micro switch (31) and the first micro switch (41).

4. A multifunctional switch seat assembly according to claim 3, characterized in that: A timing reset component (6) is arranged between the switch knob (2) and the switch base (1); the timing reset component (6) comprises a reset motor (61) installed in the switch base (1); the output end of the reset motor (61) faces upward and is connected to a reset gear set (62); the lower end of the switch knob (2) comprises a reset gear ring (63) meshing with the reset gear set (62); the reset motor (61) is connected to the control module (5); and a timing switch (64) connected to the control module (5) is installed on the switch base (1); a first guide surface (65) is arranged radially and tilted relative to the switch base (1) on the inner side of the switch base (1); the ball plunger (15) comprises a limit hook (66) extending to the inside of the switch knob (2); the limit hook (66) presses against the first guide surface (65); a second guide surface (67) is arranged tilted on the reset gear ring (63); and the limit steel ball (14) presses against the second guide surface (67).

5. A control method for the multifunctional switch seat assembly according to any one of claims 1 to 4, characterized in that: The steps include: S1: the switch knob (2) is in the first position relative to the switch base (1), the second micro switch (31) is triggered, the gas solenoid valve (32) is opened, and the gas passage is opened; S2: the switch knob (2) is rotated relative to the switch base (1) to the second position, the third micro switch (53) is triggered, the gas solenoid valve (32) and the oil switch (43) are closed, and the gas channel and the fuel channel are closed; S3: the switch knob (2) is rotated relative to the switch base (1) to the third position, the oil switch (43) is closed, and the fuel channel is opened; S4: The switch knob (2) is rotated relative to the switch base (1) to the fourth position, the first micro switch (41) is triggered, the carburetor solenoid valve (42) is opened, and the fuel channel is opened.

6. A control method for a multifunctional switch seat assembly according to claim 5, characterized in that: In the steps S1 and S4, the high-voltage package (52) is started and the gas or fuel oil is ignited; in the step S2, the storage battery (51) and the control module (5) are disconnected and the circuit connected to the control module (5) is cut off; and in the step S3, the carburetor solenoid valve (42) is opened.

7. The control method of a multifunctional switch seat assembly according to claim 5, characterized in that: In the steps S2 and S3, the timing switch (64) is pressed, the reset motor (61) is started to drive the switch knob (2) to rotate automatically, and the control module (5) controls the switch knob (2) to switch between the second position and the third position with a delayed delay.

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