A throttle valve, control method thereof, power equipment and vehicle

Abstract

The present invention relates to the technical field of transportation tools, and discloses a throttle valve, a control method thereof, a power device and a vehicle. The throttle valve comprises: a valve body and a valve core assembly, wherein the valve body has a pipeline, and the valve core is arranged in the pipeline; wherein the valve core assembly comprises an annular disc and a solid disc, the solid disc is arranged in a through hole of the annular disc, and both the annular disc and the solid disc can rotate around the same axis, and the axis is parallel to the cross section of the pipeline; the outer contour of the annular disc matches the inner contour of the pipeline, and the outer contour of the solid disc matches the inner contour of the through hole of the annular disc. If the flow span requirement is large, the solid disc and the annular disc are controlled to rotate synchronously; if the flow span requirement is small, the annular disc is fixed at a position where the opening is 0%, and the rotation of the solid disc is controlled separately; if the flow span requirement is between the first two, the annular disc is fixed at a position where the opening is between 0% and the maximum, and the rotation of the solid disc is controlled separately.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation tools, and in particular to a throttle valve, a control method thereof, a power device and a vehicle. Background Art

[0002] Most existing throttle valves adopt a single-disc design, which makes it difficult to achieve fine-grained control of the entire area over a large flow span.

[0003] from Figure 1 It can be found that under the same driving pressure difference, the small diameter throttle valve can achieve the control of small flow (the area below flow 2), and the change slope is slow. At the same time, due to the small diameter, the local loss is large, so it is impossible to achieve a higher flow when the valve body is fully open; the large diameter throttle valve can achieve good control of large flow (the area above flow 1), but the control accuracy is difficult to meet the performance requirements under the demand of small flow. Summary of the invention

[0004] The invention discloses a throttle valve, a control method thereof, a power device and a vehicle, which are used to realize full-area fine control of a large flow span.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] In a first aspect, a throttle valve is provided, the throttle valve comprising: a valve body and a valve core assembly, the valve body having a pipeline, the valve core being arranged in the pipeline; wherein the valve core assembly comprises an annular disc and a solid disc, the solid disc being located in a through hole of the annular disc, the annular disc and the solid disc both being rotatable around the same axis, the axis being parallel to a cross section of the pipeline; the outer contour of the annular disc matches the inner contour of the pipeline, and the outer contour of the solid disc matches the inner contour of the through hole of the annular disc. When the throttle valve is used to control the fluid flow, if the flow span requirement is large, the solid disc and the annular disc are controlled to rotate synchronously to adjust the flow; if the flow span requirement is small, the annular disc is fixed at a position where the opening is 0%, and the solid disc is controlled to rotate separately to adjust the flow; if the flow span requirement is between the first two, the annular disc is fixed at a position where the opening is 0% and the maximum, and the solid disc is controlled to rotate separately to adjust the flow; thereby achieving refined control of the entire area with a large flow span.

[0007] Optionally, the solid disc is a circular disc.

[0008] Optionally, the annular disc is rotatably connected to the valve body around the axis, and the solid disc is rotatably connected to the valve body around the axis.

[0009] Optionally, one end of the axis of the annular disc is connected to a first driver for driving the annular disc to rotate; one end of the axis of the solid disc is connected to a second driver for driving the solid disc to rotate.

[0010] Optionally, the second driver is rotationally engaged within the first driver.

[0011] Optionally, the second driver and the first driver are arranged on both sides of the solid disc and are rotatably fitted in the annular disc.

[0012] In a second aspect, a control method for the throttle valve described in the above technical solution is provided, the method comprising: when Q>Q1, executing control mode one, in which the annular disc and the solid disc are controlled to rotate synchronously around the axis; when Q<Q2, executing control mode two, in which the annular disc is controlled to be fixed and parallel to the cross-section of the pipeline, and the solid disc is controlled to rotate around the axis to adjust the flow; when Q2≤Q≤Q1, executing control mode three, in which the annular disc is controlled to be fixed and the angle between the annular disc and the cross-section of the pipeline is an acute angle, and the solid disc is controlled to rotate around the axis; wherein Q represents the flow span requirement, Q1 represents the first flow threshold, and Q2 represents the second flow threshold.

[0013] The control method has the same advantages as the above-mentioned throttle valve over the prior art, which will not be described in detail here.

[0014] Optionally, the method specifically includes: determining whether Q is greater than Q1, if so, executing control mode one, if not, determining whether Q is less than Q2; when determining whether Q is less than Q2, if so, executing control mode two, if not, executing control mode three.

[0015] In a third aspect, a power device is provided, the power device comprising a throttle valve as described in any of the above technical solutions.

[0016] The advantages of the power device described above and the throttle valve described above relative to the prior art are the same and will not be described in detail here.

[0017] In a fourth aspect, a vehicle is provided, the vehicle comprising the power equipment described in the above technical solution.

[0018] The advantages of the vehicle and the above-mentioned power equipment over the prior art are the same and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the characteristic relationship between different openings and flow rates of a butterfly valve in the prior art under the same boundary conditions;

[0020] Figure 2 A schematic diagram of the structure of a throttle valve provided in an embodiment of the present application;

[0021] Figure 3 for Figure 2 Schematic diagram of control mode 1 of the throttle valve shown;

[0022] Figure 4 for Figure 2 Schematic diagram of control mode 2 of the throttle valve shown;

[0023] Figure 5 for Figure 2 Schematic diagram of control mode three of the throttle valve shown;

[0024] Figure 6 for Figure 2 An axial schematic diagram of a first type of valve core in the throttle valve shown;

[0025] Figure 7 for Figure 2 A schematic axial diagram of a second type of valve core in the throttle valve shown;

[0026] Figure 8 A logic diagram showing a method for controlling a throttle valve provided in an embodiment of the application. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] refer to Figures 1 to 7The throttle valve provided in the embodiment of the present application includes: a valve body 1 and a valve core assembly, the valve body 1 has a pipeline, and the valve core is arranged in the pipeline; wherein the valve core assembly includes an annular disc 2 and a solid disc 3, the solid disc 3 is located in the through hole of the annular disc 2, and the annular disc 2 and the solid disc 3 can both rotate around the same axis, and the axis is parallel to the cross-section of the pipeline; the outer contour of the annular disc 2 matches the inner contour of the pipeline, and the outer contour of the solid disc 3 matches the inner contour of the through hole of the annular disc 2. When the throttle valve is used to control the fluid flow, if the flow span requirement is large, the solid disc 3 and the annular disc 2 are controlled to rotate synchronously to adjust the flow, and the characteristics exhibited are the flow characteristics of a large-diameter throttle valve, thereby achieving fine control of large flow; if the flow span requirement is small, the annular disc 2 is fixed at a position where the opening is 0%, and the rotation of the solid disc 3 is independently controlled to adjust the flow, and the characteristics exhibited are the flow characteristics of a small-diameter throttle valve, thereby achieving fine control of small flow; if the flow span requirement is between the first two, the annular disc 2 is fixed at a position where the opening is 0% and the maximum, and the rotation of the solid disc 3 is independently controlled to adjust the flow; achieving fine control of the entire area of ​​a large flow span.

[0029] In a specific embodiment, the solid disc 3 is an annular disc 2 so as to adapt to the inner contour of the circular pipeline of the valve body 1, so as to control the flow opening of the circular disc 2 to the greatest extent under control mode two and control mode three, and ensure that the flow in each radial direction is consistent.

[0030] In a specific embodiment, the annular disc 2 is rotatably connected to the valve body 1 around an axis, and the solid disc 3 is rotatably connected to the valve body 1 around an axis, so as to facilitate the stable combination of the annular disc 2 and the solid disc 3, which is beneficial to ensure the matching accuracy between the two, so as to ensure that there is no gap or a small gap between the two in the control mode to prevent fluid leakage.

[0031] In a specific embodiment, one end of the annular disc 2 on the axis is connected to a first driver 4 for driving the annular disc 2 to rotate; one end of the solid disc 3 on the axis is connected to a second driver 5 for driving the solid disc 3 to rotate.

[0032] In a specific embodiment, the second driver 5 is rotationally fitted in the first driver 4 to ensure the precise fit between the annular disc 2 and the solid disc 3 .

[0033] In a specific embodiment, the second driver 5 and the first driver 4 are arranged on both sides of the solid disc 3 and rotatably engaged in the annular disc 2 to provide sufficient arrangement space for the second driver 5 and the first driver 4 respectively, so as to provide sufficient motor driving force.

[0034] Based on the same inventive concept, Figure 8 The embodiment of the present application also provides a control method for the throttle valve of the above technical solution, which includes: when Q>Q1, executing control mode 1, in which the annular disc 2 and the solid disc 3 are controlled to rotate synchronously around the axis, and the characteristics of the performance are the flow characteristics of a large-diameter throttle valve, and the fine control of large flow can be achieved; when Q<Q2, executing control mode 2, in which the annular disc 2 is controlled to be fixed and parallel to the cross section of the pipeline, and the solid disc 3 is controlled to rotate around the axis to adjust the flow, and the characteristics of the performance are the flow characteristics of a small-diameter throttle valve, so that the fine control of small flow can be achieved; when Q2≤Q≤Q1, executing control mode 3, in which the annular disc 2 is controlled to be fixed and the angle between the annular disc 2 and the cross section of the pipeline is an acute angle, and the solid disc 3 is controlled to rotate around the axis; wherein Q represents the flow span requirement, Q1 represents the first flow threshold, and Q2 represents the second flow threshold. The fine control of the entire area of ​​the large flow span is achieved.

[0035] In a specific embodiment, reference Figure 8 The above method specifically includes: judging whether Q is greater than Q1, if so, executing control mode one, if not, judging whether Q is less than Q2; judging whether Q is less than Q2, if so, executing control mode two, if not, executing control mode three.

[0036] Based on the same inventive concept, an embodiment of the present application provides a power device, and the power device includes the throttle valve of the above embodiment.

[0037] When the throttle valve is used to control the fluid flow, if the flow span requirement is large, the solid disc 3 and the annular disc 2 are controlled to rotate synchronously to adjust the flow, and the characteristics of the performance are the flow characteristics of a large-diameter throttle valve, so that fine control of large flow can be achieved; if the flow span requirement is small, the annular disc 2 is fixed at a position with an opening of 0%, and the rotation of the solid disc 3 is controlled alone to adjust the flow, and the characteristics of the performance are the flow characteristics of a small-diameter throttle valve, so that fine control of small flow can be achieved; if the flow span requirement is between the first two, the annular disc 2 will be fixed at a position between an opening of 0% and the maximum, and the rotation of the solid disc 3 will be controlled alone to adjust the flow; to achieve full-area fine control of large flow spans.

[0038] Based on the same inventive concept, an embodiment of the present application provides a vehicle, which includes the power equipment of the above embodiment.

[0039] When the throttle valve is used to control the fluid flow, if the flow span requirement is large, the solid disc 3 and the annular disc 2 are controlled to rotate synchronously to adjust the flow, and the characteristics of the performance are the flow characteristics of a large-diameter throttle valve, so that fine control of large flow can be achieved; if the flow span requirement is small, the annular disc 2 is fixed at a position with an opening of 0%, and the rotation of the solid disc 3 is controlled alone to adjust the flow, and the characteristics of the performance are the flow characteristics of a small-diameter throttle valve, so that fine control of small flow can be achieved; if the flow span requirement is between the first two, the annular disc 2 will be fixed at a position between an opening of 0% and the maximum, and the rotation of the solid disc 3 will be controlled alone to adjust the flow; to achieve full-area fine control of large flow spans.

[0040] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A throttle valve, characterized in that: include: A valve body and a valve core assembly, wherein the valve body has a pipeline, and the valve core is arranged in the pipeline; wherein, The valve core assembly includes an annular disc and a solid disc, the solid disc is located in the through hole of the annular disc, and both the annular disc and the solid disc can rotate around the same axis, and the axis is parallel to the cross section of the pipeline; The outer contour of the annular disc matches the inner contour of the pipeline, and the outer contour of the solid disc matches the inner contour of the through hole of the annular disc; The annular disc is rotatably connected to the valve body around the axis, and the solid disc is rotatably connected to the valve body around the axis; One end of the axis of the annular disc is connected to a first driver for driving the annular disc to rotate; One end of the axis of the solid disc is connected to a second driver for driving the solid disc to rotate; The second driver is rotationally engaged in the first driver; or, The second driver and the first driver are arranged on both sides of the solid disc and are rotatably fitted in the annular disc; The throttle valve has three control modes to achieve full-area refined control of a large flow span; when the throttle valve is in control mode one, the solid disc and the annular disc rotate synchronously around the axis; when the throttle valve is in control mode two, the annular disc is fixed at a position where the opening is 0%, and the solid disc rotates around the axis; when the throttle valve is in control mode three, the annular disc is fixed at a position where the opening is between 0% and the maximum, and the solid disc rotates around the axis.

2. The throttle valve according to claim 1, characterized in that: The solid disc is a circular disc.

3. A throttle valve control method according to claim 1, characterized in that: include: When Q>Q1, control mode 1 is executed, in which the annular disc and the solid disc are controlled to rotate synchronously around the axis; When Q<Q2, control mode 2 is executed, in which the annular disc is controlled to be fixed and parallel to the cross section of the pipeline, and the solid disc is controlled to rotate around the axis to adjust the flow rate; When Q2≤Q≤Q1, control mode three is executed, in which the annular disc is controlled to be fixed, and the angle between the annular disc and the cross section of the pipeline is an acute angle, and the solid disc is controlled to rotate around the axis; Wherein, Q represents the flow span requirement, Q1 represents the first flow threshold, and Q2 represents the second flow threshold.

4. The control method according to claim 3, characterized in that: The method specifically comprises: Determine whether Q is greater than Q1. If so, execute control mode 1. If not, determine whether Q is less than Q2. When judging whether Q is less than Q2, if so, control mode 2 is executed, and if not, control mode 3 is executed.

5. A power device, characterized in that: A throttle valve comprising any one of claims 1 to 2.

6. A vehicle, characterized in that: Includes the power equipment described in claim 5.

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