Gas flow electronically controlled regulating valve

Abstract

The utility model provides a kind of gas flow electric control regulating valve, comprising: gas valve body;Valve seat, press pack in the gas valve body channel, the valve seat upper end is equipped with guide sleeve, flow regulating rod is installed in the guide sleeve;Regulating valve body, install in the gas valve body one side, regulating valve body is equipped with adjusting wheel main shaft;Among them, the middle sleeve of adjusting wheel main shaft has adjusting wheel, the one end of adjusting wheel main shaft is connected motor, the other end press pack magnetic steel, the outside of the magnetic steel is equipped with adjusting wheel angle sensor.The utility model provides a kind of gas flow electric control regulating valve by increasing adjusting wheel angle sensor, by adjusting wheel same flow regulating rod linkage, adjusting wheel angle sensor signal is converted into the opening signal of flow regulating rod, finally realizes the electric signal closed loop control of flow regulating rod opening, and it is more reliable and safe to operate motor.

Description

Technical Field

[0001] This utility model relates to the field of gas control valve technology, and in particular to a gas flow electronically controlled regulating valve. Background Technology

[0002] Currently used gas control valves for general-purpose engines employ a stepper motor to directly drive an adjusting rod to extend and retract, controlling the opening of the valve seat orifice to regulate engine gas flow. This control method requires a stable power supply system; for example, the engine needs a battery to power the control system. When the engine is powered on, the stepper motor drives the adjusting rod to a fixed position as the initial opening. Without a battery, the self-generated power supply is intermittent, which can cause the stepper motor to fail to reset, resulting in the engine malfunctioning. During normal engine operation, power fluctuations and the characteristics of the stepper motor can also cause it to skip steps, ultimately preventing the engine from functioning properly. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides a gas flow electronically controlled regulating valve, comprising:

[0004] Gas valve body;

[0005] A valve seat is press-fitted onto the gas valve body channel, and a guide sleeve is installed at the upper end of the valve seat, with a flow regulating rod installed in the guide sleeve;

[0006] A regulating valve body is installed on one side of the gas valve body, and a regulating wheel spindle is installed on the regulating valve body;

[0007] The main shaft of the adjusting wheel has an adjusting wheel fitted in the middle. One end of the main shaft is connected to a motor, and the other end is press-fitted with a magnet. An adjusting wheel angle sensor is installed on the outside of the magnet.

[0008] In some embodiments, the front end of the flow regulating rod that mates with the valve seat is machined with a taper or a curved surface, or the end face of the rod is aligned with the end face of the valve seat to control the flow rate.

[0009] In some embodiments, the outer edge of the regulating wheel is made of a variable diameter. The regulating wheel is driven by the rotation of a motor to rotate the main shaft of the regulating wheel, thereby controlling the opening degree between the flow regulating rod and the valve seat.

[0010] In some embodiments, the regulating wheel and the flow regulating rod are connected by a linkage or a rack and pinion to achieve flow control by displacement of the flow regulating rod.

[0011] In some embodiments, the central hole of the adjusting wheel and the main shaft of the adjusting wheel are provided with a flat fit to prevent the adjusting wheel from rotating.

[0012] In some embodiments, two diaphragm gaskets are installed on the upper end of the flow regulating rod, and a rubber diaphragm is sandwiched between the two diaphragm gaskets. The flow regulating rod and the rubber diaphragm are locked together by a diaphragm nut to achieve a seal.

[0013] In some embodiments, the outer edge of the adjusting wheel contacts the end face of the diaphragm nut, a vacuum tube is installed on the adjusting valve body, one end of the vacuum tube communicates with the vacuum chamber, and the other end communicates with the engine intake through a hose; the direction of the transverse hole of the vacuum tube is on the back of the rubber diaphragm.

[0014] In some embodiments, one end of the valve seat is connected to an exhaust pipe, which is connected to the engine's intake manifold via a hose, and the other end of the valve seat is connected to the intake passage.

[0015] In some embodiments, bearings are installed at both ends of the main shaft of the adjusting wheel, and the bearings have their own sealing rings to isolate the vacuum chamber from the outside.

[0016] In some embodiments, a gas switch solenoid valve is installed on the gas valve body to control the on / off of external gas; a gas force sensor is installed on the gas valve body and connected to the gas intake passage through a process channel.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The gas flow electronic control regulating valve provided by this utility model adds an regulating wheel angle sensor, and through the linkage between the regulating wheel and the flow regulating rod, converts the regulating wheel angle sensor signal into the flow regulating rod opening signal, and finally realizes closed-loop control of the flow regulating rod opening by electrical signal, making the engine operation more reliable and safe. Attached Figure Description

[0019] Figure 1 This is a front view of the gas flow electronically controlled regulating valve shown in an embodiment of this utility model;

[0020] Figure 2 This is a left view of the gas flow electronically controlled regulating valve shown in an embodiment of the present utility model;

[0021] Figure 3 for Figure 2 The left view of the electrically controlled gas flow regulating valve shown in the figure;

[0022] Figure 4 This is a right view of the gas flow electronically controlled regulating valve shown in an embodiment of the present utility model;

[0023] Figure 5 This is a bottom view of the gas flow electronically controlled regulating valve shown in an embodiment of the present utility model;

[0024] Figure 6 This is a top view of the electrically controlled gas flow regulating valve shown in an embodiment of the present utility model;

[0025] Figure 7 for Figure 1 A cross-sectional view of the electrically controlled gas flow regulating valve in the BB direction shown in the figure;

[0026] Figure 8 for Figure 4 A cross-sectional view of the electrically controlled gas flow regulating valve AA shown in the figure;

[0027] Figure 9 A three-dimensional structural schematic diagram of the gas flow electronically controlled regulating valve shown in this embodiment of the utility model;

[0028] In the attached figures, the following labels are used:

[0029] 1-Gas valve body;

[0030] 2-Valve seat;

[0031] 3-Guide sleeve;

[0032] 4-Flow regulating lever;

[0033] 5-Regulating valve body;

[0034] 6-Adjusting wheel main shaft;

[0035] 7-Adjusting wheel;

[0036] 701-Nut;

[0037] 8-Motor;

[0038] 9-Magnetic steel;

[0039] 10 - Adjustment wheel angle sensor;

[0040] 401 - Diaphragm gasket;

[0041] 402 - Rubber diaphragm;

[0042] 403 - Diaphragm Nut;

[0043] 11-Vacuum tube;

[0044] 12-Vacuum tube horizontal hole;

[0045] 13-Exhaust pipe;

[0046] 14 - Intake passage;

[0047] 601-Bearing;

[0048] 602 - Sealing ring;

[0049] 15-Gas switch solenoid valve;

[0050] 16-Gas force sensor;

[0051] 17-Gas intake manifold;

[0052] 18 - Vacuum chamber;

[0053] 19-Return spring. Detailed Implementation

[0054] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of this utility model, but it is not intended to limit the scope of protection of the appended claims of this utility model.

[0055] The specification and subsequent claims use certain terms to refer to specific components or parts. Those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same component or part. This specification and subsequent claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout the specification and subsequent claims are open-ended and should be interpreted as "including but not limited to". Furthermore, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0056] It should be noted that in the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", as well as "about", "approximately", "substantially", "left and right", etc., indicating the orientation or positional relationship or parameters, are all based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0057] See Figure 1-9This utility model provides a gas flow electronically controlled regulating valve, comprising: a gas valve body 1; a valve seat 2, press-fitted onto the channel of the gas valve body 1, a guide sleeve 3 mounted on the upper end of the valve seat 2, and a flow regulating rod 4 installed in the guide sleeve 3; a regulating valve body 5, mounted on one side of the gas valve body 1, and an regulating wheel spindle 6 mounted on the regulating valve body 1; wherein, an regulating wheel 7 is fitted on the middle of the regulating wheel spindle 6 and fixed by a nut 701, one end of the regulating wheel spindle 6 is connected to a motor 8, and a magnet 9 is press-fitted onto the other end, and an regulating wheel angle sensor 10 is mounted on the outside of the magnet 9.

[0058] In this embodiment, the front end of the flow regulating rod 4 that mates with the valve seat 2 is machined with a taper or a curved surface, or the end face of the valve seat 2 is used to control the flow rate.

[0059] In this embodiment, the outer edge of the adjusting wheel 7 adopts a variable diameter method. The adjusting wheel 7 drives the main shaft 6 of the adjusting wheel to rotate through the rotation of the motor 8, so as to control the opening degree of the flow regulating rod 4 and the valve seat 2.

[0060] In this embodiment, in addition to changing the flow rate in the manner described above, the regulating wheel 7 and the flow regulating rod 4 can also be connected by a linkage or rack and pinion, which can also achieve flow rate control by displacement of the flow regulating rod.

[0061] In this embodiment, the middle hole of the adjusting wheel 7 and the main shaft 6 of the adjusting wheel are provided with a flat fit to prevent the adjusting wheel 7 from rotating.

[0062] In this embodiment, two diaphragm gaskets 401 are installed on the upper end of the flow regulating rod 4, and a rubber diaphragm 402 is sandwiched between the two diaphragm gaskets 401. The flow regulating rod 4 and the rubber diaphragm 402 are locked together by the diaphragm nut 403 to achieve a seal.

[0063] In this embodiment, the outer edge of the adjusting wheel 7 is in contact with the end face of the diaphragm nut 403. A vacuum tube 11 is installed on the regulating valve body 1. One end of the vacuum tube 11 is connected to the vacuum chamber 18, and the other end is connected to the engine intake through a hose. The direction of the horizontal hole 12 of the vacuum tube is on the back of the rubber diaphragm 402 to prevent the instantaneous high pressure caused by engine backfire from directly impacting the rubber diaphragm 402.

[0064] In this embodiment, one end of the valve seat 2 is connected to the exhaust pipe 13, which is connected to the engine's intake manifold via a flexible hose. The other end of the valve seat 2 is connected to the intake passage 14. Bearings 601 are installed at both ends of the adjusting wheel spindle 6, and each bearing 601 has a built-in sealing ring 602 to isolate the vacuum chamber from the outside.

[0065] In this embodiment, a gas switch solenoid valve 15 is installed on the gas valve body 1 to control the on / off of external gas; a gas force sensor 16 is installed on the gas valve body 1 and is connected to the gas inlet 17 through a process channel to collect gas pressure.

[0066] The gas flow electronic control regulating valve described in this embodiment can be used in parallel in multiple groups to meet the needs of multi-cylinder engines.

[0067] When the engine is operating in gas mode, the basic working process and principle of the electronically controlled gas flow regulating valve provided in this embodiment are as follows:

[0068] When a batteryless engine is started manually, the engine's magneto and power module begin to generate electricity to power the ECU and the gas flow electronic control valve.

[0069] The ECU opens the gas switch solenoid valve based on the input signal;

[0070] The ECU compares the preset target angle signal of the adjustment wheel with the angle signal of the currently acquired adjustment wheel angle sensor based on the input signal.

[0071] The input signals include: speed signal, temperature signal, TPS signal, intake pressure signal, atmospheric pressure signal, fuel pressure signal, angle signal from the regulating wheel angle sensor, and other signals.

[0072] If the target adjustment wheel angle signal is greater than the currently acquired adjustment wheel angle signal, the ECU outputs a command to control the motor to drive the adjustment wheel to rotate (e.g., clockwise) until the deviation between the target angle signal and the currently acquired angle signal is within the preset range, at which point the motor stops rotating and enters the anti-rotation mode.

[0073] If the target adjustment wheel angle signal is greater than the currently acquired adjustment wheel angle signal, the ECU outputs a command to control the motor to drive the adjustment wheel to rotate (counterclockwise) until the deviation between the target angle signal and the currently acquired angle signal is within the preset range, at which point the motor stops rotating and enters the anti-rotation mode.

[0074] When the regulating wheel is turned to the corresponding position, the flow regulating rod and valve seat also open to the corresponding degree. This allows the flow rate to be adjusted to the corresponding degree according to different engine operating conditions, ensuring normal engine operation.

[0075] Because the outlet pipe of the electronically controlled gas flow regulating valve is connected to the engine intake manifold, during the intake stroke of the engine, a large negative pressure is generated in the intake manifold at the lower end of the rubber diaphragm through the pipe. If the vacuum chamber is exposed to atmospheric pressure or is sealed, a differential pressure will be generated in the intake manifold chamber of the rubber diaphragm. If the differential pressure is large, it will overcome the pressure of the return spring 19, and the flow regulating rod will move towards the valve seat. Thus, the opening in the direction of flow reduction is no longer controlled by the regulating wheel. Based on the above-mentioned problems, this design connects a negative pressure pipe to the vacuum chamber of the diaphragm, which is connected to the engine intake manifold. In this way, during the intake stroke of the engine, both chambers of the rubber diaphragm generate negative pressure simultaneously. Due to the combined force of the return spring and the gas pressure, the force of the rubber diaphragm in the intake manifold direction is greater than the force of the vacuum chamber. Thus, during the intake stroke, the end face of the diaphragm nut is always in contact with the outer edge of the regulating wheel, ensuring precise control of the gas flow and normal engine operation.

[0076] The gas flow electronically controlled regulating valve provided in this embodiment employs a variable diameter regulating wheel and adds an regulating wheel angle sensor to one end of the regulating wheel's main shaft. The angle signal from the regulating wheel angle sensor is converted into an opening signal for the flow regulating rod. This allows for real-time monitoring of the flow regulating rod's opening signal. Even with a battery-less engine, simply pulling the crankshaft to start the engine can quickly generate power to the gas flow electronically controlled regulating valve. The ECU can then receive the angle signal from the regulating wheel angle sensor and drive the stepper motor to the corresponding set opening, eliminating the need for a lengthy reset process each time power is applied and after power failure, as required in the original technology. After the engine is running normally, if the motor controlling the regulating wheel experiences step loss, it can be quickly corrected by collecting the angle signal from the regulating wheel angle sensor, solving the problem of stepper motor step loss in the original technology. The gas passage is sealed and isolated from the regulating wheel drive module by a rubber diaphragm, better preventing the risk of gas leakage. The gas flow electronically controlled regulating valve provided in this embodiment allows for more precise control.

[0077] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A gas flow electronically controlled regulating valve, characterized in that: include: Gas valve body; A valve seat is press-fitted onto the gas valve body channel, and a guide sleeve is installed at the upper end of the valve seat, with a flow regulating rod installed in the guide sleeve; A regulating valve body is installed on one side of the gas valve body, and a regulating wheel spindle is installed on the regulating valve body; The main shaft of the adjusting wheel has an adjusting wheel fitted in the middle. One end of the main shaft is connected to a motor, and the other end is press-fitted with a magnet. An adjusting wheel angle sensor is installed on the outside of the magnet.

2. The electronically controlled gas flow regulating valve according to claim 1, wherein: The flow rate is controlled by machining a tapered or curved surface at the front end of the part of the flow regulating rod that mates with the valve seat, or by having the end face of the rod facing the valve seat.

3. The electronically controlled gas flow regulating valve according to claim 1, wherein: The outer edge of the regulating wheel adopts a variable diameter method. The main shaft of the regulating wheel is driven to rotate by the rotation of the motor to control the opening degree between the flow regulating rod and the valve seat.

4. The electronically controlled gas flow regulating valve of claim 1, wherein: The regulating wheel and the flow regulating rod are connected by a linkage or a rack and pinion to achieve flow control by displacement of the flow regulating rod.

5. The electronically controlled gas flow regulating valve of claim 1, wherein: The adjusting wheel has a flat-shaped fit between its central hole and its main shaft to prevent it from rotating.

6. The electronically controlled gas flow regulating valve of claim 1, wherein: Two diaphragm gaskets are installed on the upper end of the flow regulating rod, and a rubber diaphragm is sandwiched between the two diaphragm gaskets. The flow regulating rod and the rubber diaphragm are locked together by a diaphragm nut to achieve a seal.

7. The gas flow electronically controlled regulating valve according to claim 6, characterized in that: The outer edge of the adjusting wheel contacts the end face of the diaphragm nut. A vacuum tube is installed on the adjusting valve body. One end of the vacuum tube communicates with the vacuum chamber, and the other end communicates with the engine intake through a hose. The direction of the horizontal hole of the vacuum tube is on the back of the rubber diaphragm.

8. The gas flow electronically controlled regulating valve according to claim 1, characterized in that: One end of the valve seat is connected to the exhaust pipe, which is connected to the engine's intake manifold via a flexible hose, and the other end of the valve seat is connected to the intake passage.

9. The gas flow electronically controlled regulating valve according to claim 1, characterized in that: The main shaft of the adjusting wheel is equipped with bearings at both ends, and the bearings have their own sealing rings to isolate the vacuum chamber from the outside.

10. The gas flow electronically controlled regulating valve according to claim 1, characterized in that: The gas valve body is equipped with a gas switch solenoid valve to control the on / off of external gas; the gas valve body is also equipped with a gas force sensor, which is connected to the gas intake passage through a process channel.

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