JP2023540876A - Throttle valve device - Google Patents

Abstract

A valve seat (10) in which a first accommodation chamber is provided, and a throttle valve core (20) provided in the first accommodation chamber and provided with a first orifice (21) and a second orifice (22a) or a flow hole (22b). ) and a first filter body (41) covering a first positioning flange (42) and a first orifice (21), the first positioning flange (42) abutting a first end of the throttle valve core (20). The first filtration assembly (40) includes a second filter body (51) and a second locating flange (52), the second locating flange (52) abutting the second end of the throttle valve core (20) and the second locating flange (52). The second filter body (51) includes a second filtration assembly (50) covering a second orifice (22a) or flow hole (22b). [Selection diagram] Figure 1

Description

Related Applications This application claims priority to a Chinese patent application filed on September 7, 2020, with application number 202021936061.6 and whose invention is titled "throttle valve device." All contents are incorporated by reference into this application.

TECHNICAL FIELD This application relates to the technical field of throttles, and more particularly to a throttle valve device.

A throttle valve device is a valve that controls fluid flow by changing the cross-sectional area or length of the throttle. To prevent the fluid from being contaminated with impurities, it is necessary to install a filter screen to filter the fluid within the orifice or flow hole in the throttle valve core. In conventional throttle valve devices, when a filter screen is provided at one end away from the connecting pipe, there is no contact effect with the connecting pipe, so a step is usually provided on the outer wall of the throttle valve core and the filter screen is brought into contact with the step. , and by covering the end of the throttle valve core away from the connecting pipe, filtration is carried out on that end, but this affects the normal use of the throttle valve core to some extent, and the throttle valve In order to fit the core into the filter mesh, it is necessary to reduce its size, which places higher demands on processing accuracy.At the same time, it is necessary to provide a step on the outer wall of the throttle valve core, which makes the processing process more laborious. It takes.

Based on this, the present application is concerned that the throttle valve device in the related art affects the normal use of the throttle valve core, and by making the throttle valve core smaller, the requirements for processing accuracy are higher, and at the same time the throttle valve In order to overcome the drawback that the machining process is also more labor-intensive due to the need to provide a step on the outer wall of the core, the following throttle valve device is provided.

Its technical aspects are as follows.
The throttle valve device is
a valve seat provided with a first storage chamber, and a first connection port and a second connection port that communicate with the first storage chamber, respectively;
A first orifice is provided at a first end, a flow hole communicating with the first orifice is provided at a second end, and the first end is located at an end where the first connection port is located. proximate the second end, a throttle valve core proximate to the end where the second connection port is located;
a first filter body; and a first positioning flange provided on the outer periphery of the first filter body, the first positioning flange abutting a first end of the throttle valve core, and the first filter body having a first positioning flange disposed on an outer periphery of the first filter body; a filtration assembly;
a second filter body; and a second positioning flange provided on the outer periphery of the second filter body, the second positioning flange abutting the second end of the throttle valve core, and the second filter body covering the flow hole. including an assembly;
The distance between the first locating flange and the second locating flange is greater than or equal to the length of the first orifice, or the distance between the first locating flange and the second locating flange is greater than or equal to the length of the flow hole. be.

The throttle valve device of this technical aspect can realize the assembly of the filter net without providing a step on the outer wall of the throttle valve core, which simplifies the processing process of the throttle valve core, and at the same time Because filtration is performed on that end without the need to cover the end of the wick away from the connecting pipe with a filter screen, in other words, one end of the throttle valve wick away from the connecting pipe is placed inside the filter screen. Since there is no need for intrusion, the outer diameter of that end of the throttle valve core is prevented from being reduced, reducing processing difficulty and increasing the effective filtration area of the filtration assembly.

Specifically, when assembling the throttle valve device according to the present technical aspect, the second filtration assembly, the throttle valve core, and the first filtration assembly are sequentially inserted into the first housing chamber from the first connection port, or After assembling the second filtration assembly, the throttle valve core, and the first filter assembly, the second positioning flange is inserted into the first housing chamber through the first connection port, and a step is provided at a position near the second end of the throttle valve core. Rather than contacting the second end of the throttle valve core, the second positioning flange is brought into direct contact with the second end of the throttle valve core so that the second filter body covers the flow hole, thereby achieving a filtration effect on the fluid. Finally, by inserting a connecting pipe that matches the diameter of the first connecting port into the first connecting port and bringing the tip of the connecting pipe into contact with the first positioning flange, the connecting pipe and the first throttle valve core are connected. The pressing action forces the first positioning flange between the connecting pipe and the throttle valve core, serving to position the first filtration assembly, while at the same time causing the first filter body to cover the first orifice so that the fluid Achieves filtration effect against As a result, this technical aspect not only eliminates the need for additional processing on the throttle valve core, but also has a double filtration effect, reducing the difficulty of processing while ensuring the filtration effect. .

In one embodiment, the throttle valve further includes a connecting pipe, the connecting pipe is engaged and connected to the first connecting port, and the end of the connecting pipe abuts the first positioning flange or the second positioning flange.

In one embodiment, the inner wall of the valve seat is provided with a first positioning step corresponding to the second positioning flange, and the end of the connecting pipe abuts the first positioning flange.

In one embodiment, the first positioning flange and the second positioning flange are positioning holders that extend along the radial direction of the throttle valve.

In one embodiment, the first filter body is a cap-like filter screen provided with a groove, the first positioning flange is a positioning holder fixed to the mouth of the groove, and/or the second filter body is a cap-shaped filter net provided with a groove, and the second positioning flange is a positioning holder fixed to the mouth of the groove.

In one embodiment, the concave direction of the groove in the first filter body is away from the throttle valve core, and/or the concave direction of the groove in the second filter body is away from the throttle valve core.

In one embodiment, the first positioning flange directly abuts the first end of the throttle valve core, or a second positioning step is provided on the outer wall of the first end of the throttle valve core close to the throttle valve core; The positioning flange abuts the second positioning step.

In one embodiment, the throttle valve core further includes an intermediate orifice disposed between the first orifice and the flow hole, the intermediate orifice communicating with the first orifice and the flow hole.

In one embodiment, the throttle valve core includes a fixed valve core provided with a second receiving chamber and a movable valve core provided within the second receiving chamber, and the first orifice is provided at a first end of the fixed valve core. , the flow hole is provided at the second end of the fixed valve core, the first orifice and the flow hole both communicate with the second storage chamber, the movable valve core is provided with a third orifice, and the third orifice is connected to the second end of the fixed valve core. It communicates with both the first orifice and the second storage chamber.

The throttle valve core of the present technical aspect does not need to enter the inside of the second filter body, and one end close to the second filter screen is the end where the second storage chamber is provided, so such a setting of the present technical aspect is possible. Therefore, since there is no need to reduce the outer diameter of that end of the throttle valve core, the space of the second accommodation chamber is secured to some extent, and the size of the movable valve core is also maximized. It is easier to process, and it is easier to ensure machining accuracy, so the difficulty of machining decreases. On the other hand, when in operation, the larger size of the movable valve core also reduces the risk of overturning during operation to some extent, so such an engagement between the second filtration assembly and the throttle valve core in this embodiment is advantageous. The matching relationship also ensures the operational reliability of the entire throttle valve device.

In one embodiment, the outer wall of the second storage chamber matches the inner diameter of the first storage chamber.

In one embodiment, the first positioning flange abuts the first end of the fixed valve core, or a third positioning step is provided on the outer wall of the first end of the fixed valve core close to the fixed valve core, and the first positioning flange The flange abuts the third positioning step.

In one example, the distance between the first filtration assembly and the second filtration assembly is 5 mm or more.

The drawings forming part of the present application are for the purpose of providing a further understanding of the present application, the schematic examples of the present application and their description are for the interpretation of the present application, It is not intended to unduly limit this application.

Below, in order to more clearly explain the technical aspects of the embodiments of the present application, drawings used in the explanation of the embodiments will be briefly introduced. It is clear to those skilled in the art that other drawings can be derived based on these drawings without any creative effort.

FIG. 2 is a schematic diagram of the configuration of a throttle valve device according to Example 1 of the present application. FIG. 2 is a schematic diagram of the configuration of a throttle valve core described in Example 1 of the present application. FIG. 2 is an exploded schematic diagram of the throttle valve core described in Example 1 of the present application. FIG. 2 is a schematic configuration diagram of a throttle valve device according to Example 2 of the present application. FIG. 2 is a schematic diagram of the configuration of a throttle valve core according to Example 2 of the present application. FIG. 2 is an exploded schematic diagram of a throttle valve core according to Example 2 of the present application.

10 valve seat, 11 first connection port, 12 second connection port, 13 first positioning step, 20 throttle valve core, 21 first orifice, 22a second orifice, 22b flow hole, 23 fixed valve core, 231 positioning part, 232 third positioning step, 24 movable valve core, 30 connecting pipe, 40 first filtration assembly, 41 first filter body, 42 first positioning flange, 50 second filtration assembly, 51 second filter body, 52 second positioning flange .

In order to make the above objectives, features, and advantages of the present application more clear and easy to understand, specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, various specific details are set forth to provide a thorough understanding of the present application. However, the present application may be implemented in many other ways different from those described herein, and similar modifications can be made by those skilled in the art without departing from the content of the present application. It is not limited by the specific examples disclosed below.

Example 1
The throttle valve device as shown in FIGS. 1 to 3 is
a valve seat 10 provided with a first storage chamber, and a first connection port 11 and a second connection port 12 that communicate with the first storage chamber, respectively;
The first orifice 21 is provided in the first storage chamber, the first orifice 21 is provided in the second end, the flow hole 22b is provided in communication with the first orifice 21, and the first connection port 11 is located in the first end. a throttle valve core 20 whose second end is close to the end where the second connection port 12 is located;
a connection pipe 30 that is engaged and connected to the first connection port 11 and whose end portion abuts the first filtration assembly 40 and is fitted and engaged with the first connection port 11 in this embodiment;
It includes a first filter body 41 and a first positioning flange 42 provided on the outer periphery of the first filter body 41, the first positioning flange 42 is located between the connection pipe 30 and the throttle valve core 20, and the first filter body 41 is a first filtration assembly 40 covering the first orifice 21;
The second filter body 51 includes a second positioning flange 52 provided on the outer periphery of the second filter body 51, the second positioning flange 52 contacts the second end of the throttle valve core 20, and the second filter body 51 a second filtration assembly 50 covering hole 22b. Both the first filter main body 41 and the second filter main body 51 in this embodiment are filter nets.

The distance between the first positioning flange 42 and the second positioning flange 52 is greater than or equal to the length of the first orifice 21, or the distance between the first positioning flange 42 and the second positioning flange 52 is a flow hole. 22b or more.

In the throttle valve device of this embodiment, the filter screen can be assembled without providing a step on the outer wall of the throttle valve core 20, so the processing process of the throttle valve core 20 is simplified, and at the same time, Since the end of the throttle valve core 20 away from the connection pipe 30 is filtered without the need to cover that end with a filter net, that is, the end of the throttle valve core 20 away from the connection pipe 30 is filtered. Since it is not necessary to insert one end into the inside of the filter screen, the outer diameter of that end of the throttle valve core 20 is prevented from becoming small, the difficulty of processing is reduced, and the effective filtration area of the filtration assembly is increased.

Specifically, when assembling the throttle valve device of this embodiment, the second filtration assembly 50, the throttle valve core 20, and the first filtration assembly 40 are sequentially inserted into the first housing chamber from the first connection port 11. Alternatively, after assembling the second filtration assembly 50, the throttle valve wick 20, and the first filtration assembly 40, the first filtration assembly 50, the throttle valve wick 20, and the first filtration assembly 40 are inserted into the first housing chamber through the first connection port 11, and placed near the second end of the throttle valve core 20. Rather than bringing the second positioning flange 52 into contact with the second positioning flange 52 by providing a step, the second positioning flange 52 is brought into direct contact with the second end of the throttle valve core 20 so that the second filter body 51 covers the flow hole 22b. This achieves a filtration effect on the fluid. Finally, by inserting the connecting pipe 30 that matches the diameter of the first connecting port 11 into the first connecting port 11 and bringing the tip of the connecting pipe 30 into contact with the first positioning flange 42, the connecting pipe 30 and Due to the pressing action with the first throttle valve core 20, the first positioning flange 42 is pressed between the connecting pipe 30 and the throttle valve core 20, which serves to position the first filtration assembly 40, and at the same time, the first filter The main body 41 covers the first orifice 21 to achieve a filtration effect on the fluid. As a result, this embodiment not only eliminates the need for additional processing on the throttle valve core 20, but also has a double filtration effect, which reduces the difficulty of processing and at the same time ensures the filtration effect. There is.

The valve of this embodiment is designed to facilitate positioning of the throttle valve core 20 and the first filtration assembly 40 to be assembled later by preventing the second filtration assembly 50 from moving after being attached to the valve seat 10. A first positioning step 13 corresponding to the second positioning flange 52 is provided on the inner wall of the seat 10 . The first locating step 13 and the first locating flange 42 abut and engage, thereby restricting the first locating flange 42 and preventing the first filtration assembly 40 from moving.

In another embodiment, the inner diameter at the position of the first positioning step 13 in the first accommodation chamber of the valve seat 10 is made smaller to correspond to the first positioning flange 42 without providing the additional first positioning step 13. By doing so, it may serve to limit the first positioning flange 42.

In other embodiments, the end of the connecting pipe 30 and the second filtration assembly 50 may abut, i.e. the second end of the throttle valve wick is close to the end where the first connection port is located; The connecting pipe 30 and the second positioning flange 52 may be brought into contact with each other by attaching the first end close to the end where the second connection port is located.

The first positioning flange 42 and the second positioning flange 52 described in this embodiment are provided as positioning holders extending along the radial direction of the throttle valve.

The first filter main body 41 of this embodiment is a cap-shaped filter net provided with a groove, and the first positioning flange 42 is a positioning holder fixed to the mouth of the groove. In other embodiments, the first filter body 41 may have other shapes.

Specifically, since the concave direction of the concave groove of the first filter body 41 is in the direction away from the throttle valve core 20, the distance between the first filter body 41 and the second filter body 51 is increased to achieve a good condition. It is possible to achieve a great filtration effect.

Similarly, the second filter main body 51 of this embodiment is a cap-shaped filter net provided with a groove, and the second positioning flange 52 is a positioning holder fixed to the mouth of the groove. In other embodiments, the shape of the second filter body 51 may be provided in other shapes.

Furthermore, since the concave direction of the concave groove of the second filter body 51 of this embodiment is the direction away from the throttle valve core 20, the distance between the first filter body 41 and the second filter body 51 may be further increased. There is. The throttle valve core 20 of this embodiment includes a fixed valve core 23 provided with a second accommodation chamber, and a movable valve core 24 provided within the second accommodation chamber, that is, the throttle valve core 20 of this embodiment includes: Under both of the two working conditions of cooling and heating, the throttle valve core structure can be realized, the fixed valve core 23 includes the first orifice 21 and the flow hole 22b, and the first orifice 21 is the fixed valve core 23. The second end of the fixed valve core 23 is a flow hole 22b, and both the first orifice 21 and the flow hole 22b communicate with the second storage chamber. is one end near the connecting pipe 30. A third orifice is provided in the movable valve core 24, and the third orifice communicates with both the first orifice 21 and the second storage chamber to provide fluid penetration.

The throttle valve core 20 of this embodiment does not need to enter the inside of the second filter main body 51, and one end near the second filter net is the end where the second storage chamber is provided. Due to this setting, there is no need to reduce the outer diameter of the end of the throttle valve core 20, so a certain amount of space is secured in the second accommodation chamber, and the size of the movable valve core 24 is maximized, making it possible to accommodate large-sized movable valve cores. The valve core 24 is easier to process, and it is easier to ensure the accuracy of the process, so the difficulty level of the process is reduced. On the other hand, during operation, the large size of the movable valve core 24 also reduces the risk of overturning during operation to a certain extent, so that the second filtration assembly 50 and the throttle valve core 20 of this embodiment are connected to each other. Such an engagement relationship also ensures operational reliability of the entire throttle valve device.

The outer wall of the second storage chamber in this embodiment matches the inner diameter of the first storage chamber so as to maximize the space of the second storage chamber. In addition, a positioning portion 231 that engages with the second positioning flange 52 is provided at the opening of the second storage chamber of the fixed valve core 23 of this embodiment near the second filter assembly 50 . The positioning part 231 is a positioning ring that is inclined toward the central axis of the second storage chamber, and the edge of the positioning ring and the second positioning flange 52 are brought into contact and engaged, so that the throttle valve core 20 and the second filtration are connected to each other. The stability of contact with the assembly 50 is further ensured.

A third positioning step 232 is provided on the outer wall of the first end of the fixed valve core 23 of this embodiment near the first filter assembly 40, and the first positioning flange 42 abuts the third positioning step 232. That is, when the length of the valve seat 10 is limited by inserting the end where the first orifice 21 is located into the first filter body 41, the first positioning flange 42 and the second positioning flange 52 Shorten the distance between to save length space. In addition, since the first end of the fixed valve core 23 of this embodiment is used not for providing the second accommodation chamber but for providing the first orifice 21, the outer diameter of the first end of the fixed valve core 23 is Even if it is made smaller and a step is formed, it does not affect its own function, but rather can serve as a space saver if necessary.

In other embodiments, the third positioning step 232 may not be provided, and the first positioning flange 42 and the first end of the fixed valve core 23 may directly abut. Specifically, settings should be made according to actual requirements.

In order to achieve a good filtration effect, the distance between the first filtration assembly 40 and the second filtration assembly 50 in this embodiment is 5 mm or more.

Example 2
As shown in FIGS. 4 to 6, the structure and principle of this embodiment are similar to those of embodiment 1, but the throttle valve core 20 of this embodiment is provided with only a fixed valve core, and A second orifice 22 a is provided at the second end of the valve core 20 , the second orifice 22 a is a flow hole, and the first positioning flange 42 abuts against the first end of the throttle valve core 20 .

Alternatively, in other embodiments, a first end of the throttle valve core 20 proximate to the first filtration assembly 40 is provided with a second locating step, and the first locating flange 42 abuts the second locating step.

Note that in other embodiments, the throttle valve core further includes an intermediate orifice provided between the first orifice 21 and the second orifice 22a, and the intermediate orifice communicates the first orifice 21 and the second orifice 22a. However, the first orifice 21, the intermediate orifice, and the second orifice 22a are provided in the shape of a stepped hole so as to satisfy the requirements for the aperture.

The technical features of the embodiments described above can be combined in any way, and to simplify the explanation, all possible combinations of the technical features of the embodiments described above are not explained. Any combination of features, unless inconsistent, should be considered within the range described herein.

The examples described above are merely illustrative of some embodiments of the present application, and although the descriptions thereof are relatively specific and detailed, they should therefore be understood as limiting the scope of the claims of the application. Shouldn't. It must be pointed out that those skilled in the art may make some modifications and improvements without departing from the spirit of the present application, but all of them fall within the protection scope of the present application. Therefore, the scope of protection of the patent of this application shall be subject to the scope of the appended claims.

In the description of this application, "center", "vertical direction", "horizontal direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", "Diameter" The orientation or positional relationship indicated by terms such as "direction" or "circumferential direction" is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating and simplifying the explanation of this application. and are not to be construed as limiting the present application, as they are not intended to indicate or imply that the depicted devices or elements necessarily have a particular orientation or must be constructed and operated in a particular orientation. I want you to understand.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and do not indicate or imply relative importance or number of technical features illustrated. shall not be understood as specifying. Thereby, the characteristics limited by "first" and "second" can explicitly include at least one of the characteristics or implicitly include the characteristics. In the description of this application, "plurality" means at least two, such as two, three, etc., unless there is a clear and specific limitation.

In this application, unless there are express provisions and limitations, the terms "mounting", "connected to each other", "connection", "fixing" etc. should be interpreted in a broad sense, e.g. may be connected removably or integrally, may be mechanically connected, may be electrically connected, may be directly connected to each other, They may be indirectly connected to each other through an intermediate medium, or may be an internal communication of two elements or an interaction relationship between two elements, unless otherwise specified. Those skilled in the art can understand the specific meanings of the above terms in this application depending on the specific situation.

In this application, unless expressly specified and limited, a first feature being "above" or "below" a second feature does not mean that the first and second features are in direct contact; The first and second features may be in indirect contact via an intermediate medium. Furthermore, the fact that the first feature is "above", "above", and "above" the second feature means that the first feature is directly above or diagonally above the second feature, or that the first feature is simply the first feature. may represent that the horizontal height of is higher than the second feature. The first feature being "below", "beneath", and "beneath" the second feature means that the first feature is directly below or diagonally below the second feature, or simply horizontal to the first feature. It may represent that the height is lower than the second feature.

Note that when an element is said to be "fixed" or "provided" to another element, it may be directly on the other element, or there may be an intervening element. When an element is referred to as "connected" to another element, it may be directly connected to another element or intervening elements may be present at the same time. The terms "vertical", "horizontal", "above", "below", "left", "right" and similar expressions used in this text are for descriptive purposes only and are exclusive It does not represent an embodiment.

Claims (10)

a valve seat provided with a first storage chamber, and a first connection port and a second connection port that communicate with the first storage chamber, respectively;
a throttle valve core provided in the first housing chamber, having a first orifice at a first end, and a flow hole communicating with the first orifice at a second end;
a first filter body; and a first positioning flange provided on the outer periphery of the first filter body, the first positioning flange abutting a first end of the throttle valve core, and the first filter body a first filtration assembly covering the orifice;
a second filter body; and a second positioning flange provided on the outer periphery of the second filter body, the second positioning flange abuts a second end of the throttle valve core, and the second filter body is arranged in the flow hole. a second filtration assembly covering the
The distance between the first locating flange and the second locating flange is greater than or equal to the length of the first orifice, or the distance between the first locating flange and the second locating flange is greater than or equal to the length of the first orifice, or the distance between the first locating flange and the second locating flange is equal to A throttle valve device that is longer than the length of the hole. The throttle valve further includes a connecting pipe, the connecting pipe is engaged with and connected to the first connecting port, and an end of the connecting pipe abuts the first positioning flange or the second positioning flange. Item 1. The throttle valve device according to item 1. The throttle valve device according to claim 2, wherein an inner wall of the valve seat is provided with a first positioning step corresponding to the second positioning flange, and an end of the connecting pipe abuts the first positioning flange. The throttle valve device according to claim 1, wherein the first positioning flange and the second positioning flange are positioning holders that extend along the radial direction of the throttle valve. The first filter body is a cap-shaped filter net provided with a groove, the first positioning flange is a positioning holder fixed to the mouth of the groove, and/or the second filter body is The throttle valve device according to claim 1, wherein the filter is a cap-shaped filter screen provided with a groove, and the second positioning flange is a positioning holder fixed to the mouth of the groove. The first positioning flange may directly abut the first end of the throttle valve core, or a second positioning step may be provided on an outer wall of the first end of the throttle valve core near the throttle valve core, and a second positioning step may be provided on the outer wall of the first end of the throttle valve core, The throttle valve device according to claim 5, wherein the positioning flange abuts the second positioning step. The throttle valve core further includes an intermediate orifice provided between the first orifice and the flow hole, and the intermediate orifice communicates between the first orifice and the flow hole. Throttle valve device. The throttle valve core includes a fixed valve core provided with a second accommodation chamber, and a movable valve core provided in the second accommodation chamber, and the first orifice is provided at a first end of the fixed valve core, The flow hole is provided at a second end of the fixed valve core, the first orifice and the flow hole both communicate with the second storage chamber, the movable valve core is provided with a third orifice, and the movable valve core is provided with a third orifice, The throttle valve device according to claim 1, wherein the third orifice communicates with both the first orifice and the second storage chamber. The throttle valve device according to claim 8, wherein an outer wall of the second storage chamber matches an inner diameter of the first storage chamber. 10. A throttle valve arrangement according to any preceding claim, wherein the distance between the first filtration assembly and the second filtration assembly is 5 mm or more.

Images