Throttle valve device

Abstract

a throttle valve core (20) provided in the first chamber and having a first orifice (21) and a second orifice (22a) or a flow hole (22b); a first filtering assembly (40) including a first positioning flange (42) and a first filter body (41) covering the first orifice (21), the first positioning flange (42) abutting a first end of the throttle valve core (20); and a second filtering assembly (50) including a second filter body (51) and a second positioning flange (52), the second positioning flange (52) abutting a second end of the throttle valve core (20), the second filter body (51) covering the second orifice (22a) or the flow hole (22b).

Description

[Technical field]

[0001] Related Applications This application claims priority to a Chinese patent application filed on September 7, 2020, bearing application number 202021936061.6 and entitled "Throttling Valve Device", the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of throttling, and in particular to throttling valve devices. [Background technology]

[0003] A throttle valve device is a valve that controls the flow of a fluid by changing the cross-sectional area of ​​the throttle or the length of the throttle. In order to prevent the fluid from being contaminated by impurities, a filter net needs to be installed to filter the fluid in the orifice or flow hole in the throttle valve core. In the conventional throttle valve device, when the filter net is installed at one end away from the connecting pipe, there is no abutting effect of the connecting pipe, so the filter net is usually made to be in contact with the step on the outer wall of the throttle valve core, and the end of the throttle valve core away from the connecting pipe is covered to filter the end, which affects the normal use of the throttle valve core to a certain extent, and the throttle valve core needs to be made small in size to fit into the filter net, so the requirements for processing accuracy are higher, and the processing process is more laborious because the outer wall of the throttle valve core needs to be made to be in a step. Summary of the Invention

[0004] Based on this, the present application provides the following throttle valve device in order to overcome the disadvantages that the throttle valve device in the related art affects the normal use of the throttle valve core, and that by making the throttle valve core smaller, the requirements for processing accuracy are higher, and at the same time, a step needs to be provided on the outer wall of the throttle valve core, making the processing process more labor-intensive.

[0005] The 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 each connected to the first storage chamber; a throttle valve core disposed in the first chamber, the throttle valve core having a first end with a first orifice and a second end with a flow hole communicating with the first orifice, the first end being close to an end where the first connection port is located and the second end being close to an end where the second connection port is located; a first filtration assembly including a first filter body and a first positioning flange provided on an 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 covering a first orifice; 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; The distance between the first positioning flange and the second positioning flange is equal to or greater than the length of the first orifice, or the distance between the first positioning flange and the second positioning flange is equal to or greater than the length of the flow hole.

[0006] The throttle valve device of this technical aspect can assemble the filter screen without creating a step on the outer wall of the throttle valve core, thereby simplifying the processing process of the throttle valve core. At the same time, filtration is performed on the end of the throttle valve core remote from the connecting pipe without needing to cover that end with a filter screen, i.e., there is no need to insert the end of the throttle valve core remote from the connecting pipe into the inside of the filter screen. This prevents the outer diameter of that end of the throttle valve core from becoming smaller, reduces the difficulty of processing, and increases the effective filtration area of ​​the filtration assembly.

[0007] Specifically, when assembling the throttle valve device of this technical aspect, the second filtration assembly, the throttle valve core, and the first filtration assembly are sequentially inserted into the first accommodating chamber from the first connection port, or the second filtration assembly, the throttle valve core, and the first filtration assembly are assembled and then inserted into the first accommodating chamber from the first connection port, and the second positioning flange is directly abutted against the second end of the throttle valve core, rather than being abutted against the second positioning flange by providing a step at a position close to the second end of the throttle valve core, so that the second filter body covers the flow hole, thereby achieving a filtering effect on the fluid. Finally, a connecting pipe that matches the diameter of the first connection port is inserted into the first connection port, and the tip of the connecting pipe is abutted against the first positioning flange, so that the pressing action between the connecting pipe and the first throttle valve core presses the first positioning flange between the connecting pipe and the throttle valve core, thereby playing a role in positioning the first filtration assembly, and at the same time, the first filter body covers the first orifice, thereby achieving a filtering effect on the fluid. As a result, this technical aspect not only eliminates the need for additional processing on the throttle valve core, but also has a double filtering effect, thereby reducing the difficulty of processing while ensuring the filtering effect.

[0008] In one embodiment, the throttle valve further includes a connecting pipe, the connecting pipe is engaged and connected to the first connecting port, and an end of the connecting pipe abuts against the first positioning flange or the second positioning flange.

[0009] 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 against the first positioning flange.

[0010] In one embodiment, the first positioning flange and the second positioning flange are positioning holders extending radially along the throttle valve.

[0011] In one embodiment, the first filter body is a cap-shaped filter screen having a groove, the first positioning flange is a positioning holder fixed to the groove mouth of the groove, and / or the second filter body is a cap-shaped filter screen having a groove, and the second positioning flange is a positioning holder fixed to the groove mouth of the groove.

[0012] In one embodiment, the concave direction of the groove of the first filter body is away from the throttle valve core, and / or the concave direction of the groove of the second filter body is away from the throttle valve core.

[0013] In one embodiment, the first positioning flange directly abuts against 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, and the first positioning flange abuts against the second positioning step.

[0014] In one embodiment, the throttle core further includes an intermediate orifice disposed between the first orifice and the flow hole, the intermediate orifice communicating between the first orifice and the flow hole.

[0015] In one embodiment, the throttle valve core includes a fixed valve core provided with a second accommodating chamber, and a movable valve core provided in the second accommodating chamber, 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, both the first orifice and the flow hole are connected to the second accommodating chamber, and the movable valve core is provided with a third orifice, which is connected to both the first orifice and the second accommodating chamber.

[0016] The throttle valve core of the present technical aspect does not need to enter the inside of the second filter body, and the end close to the second filter screen is the end where the second housing chamber is provided, so that such a setting of the present technical aspect does not require the outer diameter of the throttle valve core at that end to be reduced, so that the space of the second housing chamber is secured to a certain extent, and the size of the movable valve core is also maximized, and a large-sized movable valve core is easier to process and easier to ensure processing accuracy, so that the processing difficulty is reduced. Meanwhile, when operating, the large-sized movable valve core also reduces the risk of rollover to a certain extent, so that such an engagement relationship between the second filtration assembly and the throttle valve core of this embodiment also ensures the operational reliability of the entire throttle valve device.

[0017] In one embodiment, the outer wall of the second chamber matches the inner diameter of the first chamber.

[0018] In one embodiment, the first positioning flange abuts against 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 abuts against the third positioning step.

[0019] In one embodiment, the distance between the first filtration assembly and the second filtration assembly is greater than or equal to 5 mm. [Brief description of the drawings]

[0020] The drawings constituting a part of this application are intended to provide a further understanding of the application, and the schematic examples and the description thereof are intended to interpret the application and are not intended to unduly limit the application.

[0021] In the following, in order to more clearly explain the technical aspects in the embodiments of the present application, drawings used in the description of the embodiments are briefly introduced. However, the drawings in the following description are only some embodiments of the present application, and it is obvious that those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0022] [Figure 1]1 is a schematic diagram showing the configuration of a throttle valve device described in Example 1 of the present application. [Diagram 2] FIG. 2 is a schematic diagram showing the configuration of a throttle valve core described in Example 1 of the present application. [Diagram 3] FIG. 2 is an exploded schematic view of the throttle valve core described in Example 1 of the present application. [Figure 4] FIG. 4 is a schematic diagram showing the configuration of a throttle valve device described in Example 2 of the present application. [Diagram 5] FIG. 4 is a schematic diagram showing the configuration of a throttle valve core described in Example 2 of the present application. [Figure 6] FIG. 2 is an exploded schematic view of a throttle valve core described in Example 2 of the present application.

[0023] 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 portion, 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. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] In order to make the above-mentioned objects, features and advantages of the present application clearer and easier to understand, the following describes in detail the specific embodiments of the present application with reference to the drawings. In the following description, various specific details are described in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other aspects different from those described herein, and those skilled in the art can make similar improvements without going against the content of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] Example 1 The throttle valve device as shown in Figs. a valve seat 10 provided with a first storage chamber and a first connection port 11 and a second connection port 12 each connected to the first storage chamber; a throttle valve core 20 provided in the first chamber, the first end of which is provided with a first orifice 21, the second end of which is provided with a flow hole 22b communicating with the first orifice 21, the first end being close to the end where the first connection port 11 is located, and the second end being close to the end where the second connection port 12 is located; a connection pipe 30 which is engaged with and connected to the first connection port 11 and whose end abuts against the first filter assembly 40, and which is inserted and engaged with the first connection port 11 in this embodiment; A first filtration assembly 40 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 being located between the connecting pipe 30 and the throttle valve core 20, and the first filter body 41 covers the first orifice 21; The second filter assembly 50 includes a second filter body 51 and a second positioning flange 52 provided on the outer periphery of the second filter body 51, the second positioning flange 52 abuts against the second end of the throttle valve core 20, and the second filter body 51 covers the flow hole 22b. In this embodiment, the first filter body 41 and the second filter body 51 are both filter nets.

[0026] 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 greater than or equal to the length of the flow hole 22b.

[0027] In the throttle valve device of this embodiment, the filter screen can be attached without providing a step on the outer wall of the throttle valve core 20, thereby simplifying the processing process of the throttle valve core 20. At the same time, filtering is performed on the end of the throttle valve core 20 remote from the connecting pipe 30 without covering that end with a filter screen. In other words, there is no need to insert the end of the throttle valve core 20 remote from the connecting pipe 30 into the inside of the filter screen. This prevents the outer diameter of that end of the throttle valve core 20 from becoming smaller, reduces the difficulty of processing, and increases the effective filtering area of ​​the filtering assembly.

[0028] Specifically, when assembling the throttle valve device of this embodiment, the second filtering assembly 50, the throttle valve core 20 and the first filtering assembly 40 are sequentially inserted into the first accommodating chamber through the first connecting port 11, or the second filtering assembly 50, the throttle valve core 20 and the first filtering assembly 40 are assembled and then inserted into the first accommodating chamber through the first connecting port 11, and instead of abutting against the second positioning flange 52 by providing a step at a position close to the second end of the throttle valve core 20, the second positioning flange 52 is directly abutted against the second end of the throttle valve core 20, and the second filter body 51 covers the flow hole 22b, thereby achieving the filtering effect on the fluid. Finally, the connecting pipe 30, which is matched to the bore of the first connecting port 11, is inserted into the first connecting port 11, and the tip of the connecting pipe 30 is brought into contact with the first positioning flange 42, so that the pressing action between the connecting pipe 30 and the first throttle valve core 20 presses the first positioning flange 42 between the connecting pipe 30 and the throttle valve core 20, thereby playing a role in positioning the first filtering assembly 40, and at the same time, the first filter body 41 covers the first orifice 21, thereby achieving a filtering effect on the fluid. As a result, this embodiment not only does not require additional processing on the throttle valve core 20, but also has a double filtering effect, thereby reducing the processing difficulty and ensuring the filtering effect.

[0029] In order to prevent the second filtering assembly 50 from moving after being attached to the valve seat 10, thereby facilitating the positioning of the throttle valve core 20 and the first filtering assembly 40 to be assembled later, the inner wall of the valve seat 10 in this embodiment is provided with a first positioning step 13 corresponding to the second positioning flange 52. The first positioning step 13 and the first positioning flange 42 abut and engage with each other to restrict the first positioning flange 42 and prevent the first filtering assembly 40 from moving.

[0030] In other embodiments, the role of limiting the first positioning flange 42 may be achieved by reducing the inner diameter at the position of the first positioning step 13 in the first storage chamber of the valve seat 10 so as to correspond to the first positioning flange 42, without providing an additional first positioning step 13.

[0031] In another embodiment, the end of the connecting pipe 30 and the second filtering assembly 50 may be abutted, i.e., the second end of the throttle valve core may be adjacent to the end where the first connecting port is located and the first end may be installed adjacent to the end where the second connecting port is located, so that the connecting pipe 30 and the second positioning flange 52 are abutted.

[0032] 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.

[0033] In this embodiment, the first filter body 41 is a cap-shaped filter net having a groove, and the first positioning flange 42 is a positioning holder fixed to the groove mouth of the groove. In other embodiments, the first filter body 41 may have other shapes.

[0034] Specifically, since the concave direction of the groove of the first filter body 41 is the direction away from the throttle valve core 20, the distance between the first filter body 41 and the second filter body 51 can be increased to achieve a good filtering effect.

[0035] Similarly, the second filter body 51 of the present embodiment is a cap-shaped filter screen having a groove, and the second positioning flange 52 is a positioning holder fixed to the groove mouth of the groove. In other embodiments, the second filter body 51 may have other shapes.

[0036] In addition, the concave direction of the groove of the second filter body 51 of this embodiment is a direction away from the throttle valve core 20, so that the distance between the first filter body 41 and the second filter body 51 is further increased. The throttle valve core 20 of this embodiment includes a fixed valve core 23 with a second accommodation chamber and a movable valve core 24 installed in the second accommodation chamber, that is, the throttle valve core 20 of this embodiment can realize a throttle valve core structure in both of the two working conditions of cooling and heating, the fixed valve core 23 includes a first orifice 21 and a flow hole 22b, the first orifice 21 is installed at a first end of the fixed valve core 23, the second end of the fixed valve core 23 is the flow hole 22b, the first orifice 21 and the flow hole 22b are both connected to the second accommodation chamber, and the first end of the fixed valve core 23 is an end close to the connecting pipe 30. The movable valve core 24 is provided with a third orifice, which is in communication with both the first orifice 21 and the second chamber, thereby achieving the effect of allowing the fluid to pass through.

[0037] The throttle valve core 20 of this embodiment does not need to enter the inside of the second filter body 51, and the end close to the second filter screen is the end where the second chamber is provided, so that such a setting of this embodiment does not require the outer diameter of the throttle valve core 20 at that end to be reduced, so that the space of the second chamber is secured to a certain extent, and the size of the movable valve core 24 is also maximized, and a large-sized movable valve core 24 is easier to process and easier to ensure processing accuracy, so that the processing difficulty is reduced. Meanwhile, the large-sized movable valve core 24 reduces the risk of rollover to a certain extent during operation, so that such an engagement relationship between the second filter assembly 50 and the throttle valve core 20 of this embodiment also ensures the operating reliability of the entire throttle valve device.

[0038] The outer wall of the second chamber in this embodiment is consistent with the inner diameter of the first chamber, so as to maximize the space of the second chamber. In addition, the opening of the second chamber close to the second filter assembly 50 of the fixed valve core 23 in this embodiment is provided with a positioning portion 231 that engages with the second positioning flange 52. The positioning portion 231 is a positioning ring inclined toward the central axis of the second chamber, and the edge of the positioning ring and the second positioning flange 52 abut and engage with each other, which further ensures the abutment stability between the throttle valve core 20 and the second filter assembly 50.

[0039] In this embodiment, the fixed valve core 23 has a third positioning step 232 on the outer wall of the first end close to the first filtering assembly 40, and the first positioning flange 42 abuts against the third positioning step 232. That is, the end where the first orifice 21 is located is recessed into the first filter body 41, so that when the length of the valve seat 10 is limited, the distance between the first positioning flange 42 and the second positioning flange 52 is shortened to save space in length. In addition, since the first end of the fixed valve core 23 in this embodiment is used to provide the first orifice 21, not to provide the second receiving chamber, the outer diameter of the first end of the fixed valve core 23 is reduced to form a step, but this does not affect its function, but can play the role of saving space as needed.

[0040] In another embodiment, the third positioning step 232 may not be provided, and the first positioning flange 42 may directly abut against the first end of the fixed valve core 23. Specifically, it is set according to actual requirements.

[0041] In order to achieve a good filtering effect, the distance between the first filtering assembly 40 and the second filtering assembly 50 in this embodiment is equal to or greater than 5 mm.

[0042] Example 2 As shown in Figures 4 to 6, the structure and principle of this embodiment are similar to those of embodiment 1, except that the throttle valve core 20 of this embodiment only has a fixed valve core, and a second orifice 22a is provided at the second end of the throttle valve core 20, and the second orifice 22a is a flow hole, and a first positioning flange 42 abuts against the first end of the throttle valve core 20.

[0043] Alternatively, in another embodiment, the throttle valve core 20 is provided at its first end close to the first filtration assembly 40 with a second locating step, and the first locating flange 42 abuts against the second locating step.

[0044] In addition, in another embodiment, the throttle valve core further includes an intermediate orifice provided between the first orifice 21 and the second orifice 22a, the intermediate orifice communicates with the first orifice 21 and the second orifice 22a, and the first orifice 21, the intermediate orifice and the second orifice 22a are provided in the shape of a stepped hole so as to meet the throttling requirements.

[0045] Each of the technical features of the above-mentioned embodiments may be combined in any combination. For the sake of brevity, not all possible combinations of each of the technical features in the above-mentioned embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, all of them should be considered within the scope described in this specification.

[0046] The above examples merely show some embodiments of the present application, and although the description is relatively specific and detailed, it should not be understood as limiting the scope of the claims of the application. It should be noted that those skilled in the art can make some modifications and improvements without departing from the spirit of the present application, all of which are within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the scope of the attached claims.

[0047] In the description of this application, it should be understood that the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate and simplify the description of this application, and do not indicate or imply that the devices or elements shown necessarily have to be configured and operated in a particular orientation, and should not be construed as limiting this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying a relative importance or as implicitly designating the number of technical features depicted. Thus, a feature qualified with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "plurality" means at least two, e.g., two, three, etc., unless explicitly and specifically limited.

[0049] In this application, unless otherwise clearly specified and limited, the terms "attached", "connected to each other", "connected", "fixed" and the like should be interpreted in a broad sense, for example, may be fixedly connected, detachably connected, or integral, may be mechanically connected, may be electrically connected, may be directly connected to each other, may be indirectly connected to each other through an intermediate medium, may be an internal communication between two elements, or an interaction relationship between two elements, unless otherwise clearly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In this application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact with each other, or that the first and second features are in indirect contact with each other through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than that of the second feature.

[0051] It should be noted that when an element is "fixed" or "mounted" on another element, it may be directly on the other element, or there may be intervening elements present. When an element is "connected" to another element, it may be directly connected to the other element, or there may be intervening elements present at the same time. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions are used for descriptive purposes only and do not represent the only embodiment.

Claims

1. a valve seat provided with a first storage chamber and a first connection port and a second connection port each communicating with the first storage chamber; a throttle valve core provided in the first chamber, the throttle valve core having a first orifice at a first end and a flow hole communicating with the first orifice at a second end; a first filtration assembly including a first filter body and a first positioning flange provided on an 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 covering the first orifice; a second filter body; and a second positioning flange provided on an outer periphery of the second filter body, the second positioning flange abutting a second end of the throttle valve core, and the second filter body covering the flow hole; a distance between the first positioning flange and the second positioning flange is equal to or greater than a length of the first orifice, or a distance between the first positioning flange and the second positioning flange is equal to or greater than a length of the flow hole; At least a portion of the first orifice is disposed within the first filter body.

2. 2. The throttle valve device according to claim 1, further comprising a connecting pipe, the connecting pipe being engaged and connected to the first connection port, and an end of the connecting pipe abutting against the first positioning flange or the second positioning flange.

3. 3. 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 against the first positioning flange.

4. 2. The throttle valve device according to claim 1, wherein the first positioning flange and the second positioning flange are positioning holders extending along a radial direction of the throttle valve.

5. The throttle valve device according to claim 1, wherein the first filter body is a cap-shaped filter screen having a groove formed therein, the first positioning flange is a positioning holder fixed to the groove mouth of the groove, and / or the second filter body is a cap-shaped filter screen having a groove formed therein, and the second positioning flange is a positioning holder fixed to the groove mouth of the groove.

6. 6. The throttle valve device according to claim 5, wherein the first positioning flange directly abuts against 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, and the first positioning flange abuts against the second positioning step.

7. 2. The throttle valve device according to claim 1, wherein 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.

8. 2. The throttle valve device according to claim 1, wherein the throttle valve core includes a fixed valve core having a second chamber and a movable valve core provided in the second chamber, 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, both of the first orifice and the flow hole are connected to the second chamber, and the movable valve core is provided with a third orifice, and the third orifice is connected to both the first orifice and the second chamber.

9. 9. The throttle valve device of claim 8, wherein an outer diameter of the second chamber corresponds to an inner diameter of the first chamber.

10. 10. The throttle valve device according to claim 1, wherein the distance between the first and second filtering assemblies is greater than or equal to 5 mm.

Images