Valve mechanism

Abstract

The valve device (100) includes a valve body unit (10), a mounting seat (11), and a valve seat (20), and further includes a fastening member (30), in which a limiting step (111) is drilled in the mounting seat (11) along an axial direction perpendicular to the mounting hole (21), a connecting hole (22) communicating with the mounting hole (21) is drilled in the side surface of the valve seat (20), and one end of the fastening member (30) is inserted into the mounting hole (21) from the connecting hole (22) and abuts against the limiting step (111).

Description

[Technical field]

[0001] TECHNICAL FIELD This application relates to the field of refrigeration, and more particularly, to valve gear. [Background technology]

[0002] The valve device is an important component of the cooling equipment, and mainly plays the role of throttling and reducing pressure. The valve device includes components such as a valve body unit, a sleeve, a guide sleeve, a valve stem assembly, a nut sleeve, and a driving mechanism, in which the sleeve is mounted on the valve body unit, a valve port is drilled in the valve body unit, the nut sleeve and the guide sleeve are mounted on the valve body unit, and the valve stem assembly is mounted in the guide sleeve, and the driving mechanism moves along the guide sleeve and the nut sleeve to open and close the valve port, thereby achieving the purpose of throttling and reducing pressure.

[0003] In conventional valve gears, the positional relationship between the valve seat and the valve body unit is determined by the limiting member, and usually, the contact of the limiting member can only limit the axial movement of the valve body unit away from the valve seat, so it is not possible to completely ensure that the positional relationship between the valve seat and the valve body unit will not change, which will further affect the normal operation of the valve gear. Summary of the Invention

[0004] According to each embodiment of the present application, a valve device is provided that can realize simultaneous fixing of a valve seat and a valve body unit in the axial and radial directions.

[0005] The present application provides the following technical aspects. The valve device includes a valve body unit, a mounting seat, and a valve seat, the valve seat being provided with a mounting hole, the mounting seat being attached to the valve body unit, one end of the valve body unit adjacent to the mounting seat being inserted into the mounting hole, the mounting seat being attached to the mounting hole together with the valve body unit, the valve body unit including a stator, a rotor, a nut sleeve, and a spindle assembly, the stator, the rotor, and the nut sleeve being cooperated to move the spindle assembly, the valve device further including a fastening member, and the mounting seat being provided with a limit step along an axial direction perpendicular to the mounting hole. Installation A connection hole communicating with the mounting hole is drilled in the side surface of the valve seat, and one end of the fastening member is inserted into the mounting hole from the connection hole and abuts against the limiting step.

[0006] In one embodiment, the limiting step includes a first surface and a second surface, and an included angle between the first surface and the second surface is defined as A. do.

[0007] In one embodiment, the axial direction of the fastening member and the first surface are abutted against one another and the radial direction of the fastening member is restrainingly engaged with the second surface.

[0008] In one embodiment, the end face of the fastening member and the first surface are abutted against one another and the outer circumferential surface of the fastening member is restrainingly engaged with the second surface.

[0009] In one embodiment, the first surface and the second surface intersect and the included angle A is a right angle.

[0010] In one embodiment, the first surface is planar and parallel to the axis of the mounting hole and / or the second surface is planar and perpendicular to the axis of the mounting hole.

[0011] In one embodiment, the height of the first surface is H1 along the axial direction of the valve body unit, the maximum length of the second surface is H2 along the radial direction of the valve body unit, and the diameter of the fastening member is D, where H1, H2, and D satisfy the relationship 0.5D≦H1≦2D, 0.3D≦H2≦D.

[0012] In one embodiment, the fastening member is a bolt or screw.

[0013] In one embodiment, the number of the connecting holes is two, and the two connecting holes are spaced apart on the same side of the valve seat, and the number of the fastening members is the same as the number of the connecting holes.

[0014] In one embodiment, the number of connecting holes is two, and the two connecting holes are provided on different sides of the valve seat, and there are two limit steps on the mounting seat. Installation Each limit step corresponds to one connection hole, and the number of fastening members is the same as the number of connection holes.

[0015] In one embodiment, the number of the limiting steps is at least two, and the at least two limiting steps are spaced apart along the circumferential direction of the mounting seat.

[0016] It will be understood that by arranging the four limiting steps at intervals along the circumferential direction of the mounting seat, mounting and assembly between the valve body unit and the valve seat is facilitated.

[0017] In one embodiment, the mounting seat is fitted to the valve body unit and is fixedly connected to the valve body unit.

[0018] Compared with the prior art, the valve device has a limiting step so that the fastening member abuts in both the axial and radial directions, thereby preventing the valve body unit from rotating relative to the valve seat or moving up and down in the axial direction relative to the valve seat. This realizes simultaneous fixation of the valve seat and the valve body unit in the axial and circumferential directions, which not only stabilizes positioning but also improves the assembly effect and the operating stability of the valve device. [Brief description of the drawings]

[0019] To better explain the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more drawings, in which additional details or examples used to explain the drawings should not be considered as limiting the scope of the disclosed inventions, the embodiments and / or examples described herein, and any of the best modes of these inventions as understood herein.

[0020] [Figure 1] 1 is an exploded structural schematic diagram of a valve device according to some embodiments. [Diagram 2] 1 is a schematic assembly diagram of one view of a valve device according to some embodiments. FIG. [Diagram 3]1A and 1B are structural schematic diagrams of a valve body unit according to some embodiments. [Figure 4] 1 is a structural schematic diagram of a mounting seat according to some embodiments. [Diagram 5] 1 is a schematic cross-sectional view of a valve device according to some embodiments; FIG. [Figure 6] 4 is a schematic cross-sectional view of a valve device according to some embodiments; FIG. [Figure 7] 4 is a cross-sectional structural schematic diagram of a valve device according to some embodiments from another perspective. FIG.

[0021] In the drawings, the meanings of the symbols are as follows: 100 valve device, 10 valve body unit, 11 mounting seat, 111 limiting step, 1111 first surface, 1112 second surface, 112 through hole, 12 valve body, 13 spindle assembly, 14 sleeve, 15 valve port, 20 valve seat, 21 mounting hole, 22 connection hole, 30 fastening member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, in combination with the drawings in the embodiments of the present application, the technical aspects in the embodiments of the present application will be clearly and completely described, but it is clear that the described embodiments may not be all the embodiments, but may be some of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative efforts belong to the protection scope of the present application.

[0023] It should be noted that when an assembly is referred to as being "mounted" to another assembly, it may be directly on top of the other assembly, or there may be an assembly between them. When an assembly is referred to as being "mounted" to another assembly, it may be directly on top of the other assembly, or there may be an assembly between them at the same time. When an assembly is referred to as being "fixed" to another assembly, it may be directly fixed on top of the other assembly, or there may be an assembly between them at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. Herein, the terms used in the specification of this application are merely intended to describe specific embodiments and are not intended to limit this application. As used herein, the term "and / or" includes any and all combinations of one or more of the listed elements.

[0025] 1 to 7, the present application provides a valve apparatus 100 applied in an air conditioning and refrigeration system to regulate the flow rate and pressure of a fluid medium.

[0026] Specifically, the valve device 100 includes a valve body unit 10, a mounting seat 11, and a valve seat 20, the valve seat 20 is provided with a mounting hole 21, the mounting seat 11 is attached to the valve body unit 10, one end of the valve body unit 10 adjacent to the mounting seat 11 enters the mounting hole 21, the mounting seat 11 is attached to the mounting hole 21 together with the valve body unit 10, the valve device 100 further includes a fastening member 30, and the mounting seat 11 has a limiting step 111 along an axial direction perpendicular to the mounting hole 21. Installation A connection hole 22 communicating with the mounting hole 21 is drilled in the side surface of the valve seat 20, and one end of the fastening member 30 is inserted from the connection hole 22 into the mounting hole 21 and abuts against the limiting step 111.

[0027] It should be noted that in the conventional valve device, the positional relationship between the valve seat and the valve body unit is determined by the limiting member, and the contact of the limiting member can only limit the axial movement of the valve body unit away from the valve seat, so that the positional relationship between the valve seat and the valve body unit cannot be completely ensured and the normal operation of the valve device is affected. Meanwhile, in the present embodiment, the limiting step 111 is provided so that the fastening member 30 abuts in both the axial and radial directions, so that the valve body unit 10 cannot rotate relative to the valve seat 20 and cannot move up and down in the axial direction relative to the valve seat 20, and the valve seat 20 and the valve body unit 10 are simultaneously fixed in the axial and circumferential directions, which not only stabilizes the positioning but also improves the assembly effect, and improves the operation stability of the valve device 100.

[0028] As shown in Figures 1 and 5, the valve body unit 10 includes a valve body 12, a spindle assembly 13, and a sleeve 14, a valve opening 15 is provided in the valve body 12, the spindle assembly 13 is attached to the valve body 12 and can move relative to the valve body 12 so as to open and close the valve opening 15, one end of the sleeve 14 covers the valve body 12, and one end of the spindle assembly 13 away from the valve body 12 enters into the sleeve 14.

[0029] It is understood that the valve body unit 10 includes, in addition to the above-mentioned components, components such as a stator, a rotor, a nut sleeve, etc., and these above-mentioned components work together to move the spindle assembly 13, thereby realizing adjustment of the opening degree of the valve port 15. Of course, the specific mounting positions of each of the above-mentioned components are well known in the art, and will not be described in detail here.

[0030] 1 to 3, the mounting seat 11 is fitted into the valve body 12 and fixedly connected to the valve body 12, thereby realizing the attachment between the valve body 12 and the mounting seat 11 and preventing the mounting seat 11 from falling off the valve body 12 and affecting the normal operation of the valve device 100. Of course, in other embodiments, the mounting seat 11 and the valve body 12 may be connected by screws, welding, etc.

[0031] Optionally, a through hole 112 is drilled in the mounting seat 11 , and one end of the valve body 12 is inserted into the through hole 112 and fixedly connected to the through hole 112 .

[0032] As shown in Figures 4 to 7, the limiting step 111 includes a first surface 1111 and a second surface 1112, an end face of the fastening member 30 and the first surface 1111 abut against each other, and an outer peripheral surface of the fastening member 30 is limitingly engaged with the second surface 1112. When the valve body unit 10 rotates relative to the valve seat 20, the end face of the fastening member 30 abuts against the first surface 1111 to restrict the valve body unit 10 from rotating relative to the valve seat 20, and when the valve body unit 10 moves up and down relative to the valve seat 20, the outer peripheral surface of the fastening member 30 abuts against the second surface 1112 to restrict the valve body unit 10 from moving up and down relative to the valve seat 20, thereby realizing simultaneous fixation of the valve seat 20 and the valve body unit 10 in the axial and circumferential directions.

[0033] Optionally, the first surface 1111 is either a flat surface or a curved surface, and the second surface 1112 is either a flat surface or a curved surface. Specifically, in this embodiment, the first surface 1111 is a flat surface, and the second surface 1112 is also a flat surface. It is understood that selecting a flat surface not only makes it easier to process, but also makes the manufacture more convenient, and when the flat surface abuts against the fastening member 30, the contact surface is larger, that is, the abutment stability of both is better.

[0034] Furthermore, the first surface 1111 and the second surface 1112 intersect, and the included angle between the first surface 1111 and the second surface 1112 is defined as A, and the included angle A between the first surface 1111 and the second surface 1112 can be selected in the range of 30 degrees to 160 degrees. It is understood that this included angle A is undesirable if it is too small or too large, and if it is too small, it becomes difficult for the fastening member 30 to penetrate into one end of the mounting hole 21 and abut against the first surface 1111, and if it is too large, the stroke of the fastening member 30 entering the mounting hole 21 becomes long, the contact area with the first surface 1111 becomes small, and the abutment stability between them becomes poor.

[0035] Optionally, in this embodiment, the first surface 1111 and the second surface 1112 intersect with each other and the included angle A is a right angle, the first surface 1111 is parallel to the axis of the valve body unit 10, and the second surface 1112 is perpendicular to the axis of the valve body unit 10, and the axis of the connecting hole 22 is also perpendicular to the axis of the valve body unit 10, so that the end face of the fastening member 30 and the first surface 1111 abut in a surface-contact manner, and the outer peripheral surface of the fastening member 30 abuts against the second surface 1112 in close contact, which further stabilizes the abutment between the fastening member 30 and the first surface 1111 and the second surface 1112, and further improves the reliability of the restriction of the entire valve body unit 10.

[0036] It is understood that the first surface 1111 and the second surface 1112 intersect with each other, and the included angle A between the first surface 1111 and the second surface 1112 is a right angle, which allows the first surface 1111 and the second surface 1112 to be more closely attached to the end surface and outer peripheral surface of the fastening member 30, thereby further improving the fixing performance between the valve body unit 10 and the valve seat 20.

[0037] Furthermore, along the axial direction of the valve disc unit 10, the height of the first surface 1111 is H1, along the radial direction of the valve disc unit 10, the maximum length of the second surface 1112 is H2, and the diameter of the fastening member 30 is D, where H1, H2, and D satisfy the relational expressions of 0.5D≦H1≦2D and 0.3D≦H2≦D. In this way, the fastening member 30 abuts against the limiting step 111, thereby further enhancing the stable fixing performance between the valve disc unit 10 and the valve seat 20, and ensuring the reliability of the limit in the axial and circumferential directions of the valve seat 20.

[0038] It should be noted that if the height H1 of the first surface 1111 and the maximum length H2 of the second surface 1112 are too small, the force-receiving area of ​​the fastening member 30 that contacts the fastening member 30 is too small, and the fastening member 30 is easily separated from the limiting step 111, which leads to a limiting failure and affects the normal operation of the valve device 100. On the other hand, if the height H1 of the first surface 1111 and the maximum length H2 of the second surface 1112 are too large, the limiting step 111 is not provided on the mounting seat 11. Installation This makes it more difficult to achieve the desired results, resulting in wasted material and increased processing costs.

[0039] Generally speaking, the maximum length H2 of the second surface 1112 should be limited based on the overall length of the fastening member 30, but in this application, it is limited using the diameter D of the fastening member 30, mainly because the diameter D of the fastening member 30 affects the shear force, i.e., the maximum length H2 of the second surface 1112 mainly affects the axial fixing performance of the fastening member 30, and the larger the diameter D of the fastening member 30, the larger the shear force required to bend the fastening member 30 here, so H2 here needs to be limited by the diameter D of the fastening member 30.

[0040] In one embodiment, the number of limiting steps 111 is four, and the four limiting steps 111 are arranged at intervals along the circumferential direction of the mounting seat 11 and arranged in four directions of the mounting seat 11 respectively, so that the fastening member 30 can abut against any one of the limiting steps 111, that is, the valve body unit 10 can be installed at multiple angles when installed, which makes installation more convenient.

[0041] Optionally, in order to improve the restriction reliability of the valve body unit 10, the number of fastening members 30 may be the same as the number of limiting steps 111, that is, the number of fastening members 30 is four, and the four fastening members 30 are arranged on the four faces of the valve seat 20, and the four fastening members 30 simultaneously enter the mounting hole 21 from four different directions and abut against the corresponding limiting steps 111 respectively.

[0042] In another embodiment, the number of connection holes 22 is two, and the two connection holes 22 are spaced apart on the same side of the valve seat 20, and the number of fastening members 30 is the same as the number of connection holes 22, i.e., there are also two fastening members 30, and the two fastening members 30 respectively enter the mounting hole 21 from the connection holes 22 and abut against the same limiting step 111, i.e., the number of limiting step 111 is one.

[0043] In another embodiment, the number of the connection holes 22 is two, and the two connection holes 22 are provided on different sides of the valve seat 20, and the mounting seat 11 has two limiting steps 111. Installation One connection hole 22 corresponds to each limiting step 111, and the number of fastening members 30 is the same as the number of connection holes 22. Two fastening members 30 enter the mounting hole 21 from the connection holes 22 on different sides of the valve seat 20 and abut against different limiting steps 111.

[0044] Optionally, in this embodiment, the two connecting holes 22 may be located on two adjacent side surfaces of the valve seat 20, or may be located on two opposing side surfaces of the valve seat 20, and at the same time, the limiting step 111 is also located in the mounting seat 11 accordingly.

[0045] Optionally, the fastening member 30 can use a bolt or a screw, that is, the fastening member 30 and the valve seat 20 are screwed together. Screwing not only simplifies the structure, but also makes it convenient to install and remove, and facilitates inspection and maintenance.

[0046] The technical features of the above-mentioned embodiments can be combined in any manner. For the sake of simplicity, all possible combinations of the technical features in the above-mentioned embodiments have not been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered as being within the scope described in this specification.

[0047] The above embodiments 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 utility model patent. It should be noted that those skilled in the art can make some further modifications and improvements without departing from the idea of ​​the present application, all of which belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be pursuant to the scope of the appended claims. The technical features of the above embodiments can be arbitrarily combined, and for the sake of simplicity, all possible combinations of the technical features in the above embodiments have not been described, but as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0048] The above embodiments merely show some embodiments of the present application, and the description is specific and detailed, but should not be understood as limiting the scope of the application. It should be noted that those skilled in the art can make some further modifications and improvements without departing from the spirit of the present application, all of which belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of the appended claims.

Claims

1. A valve device comprising a valve body unit, a mounting seat, and a valve seat, the valve seat having a mounting hole formed therein, the mounting seat being attached to the valve body unit, one end of the valve body unit adjacent to the mounting seat being inserted into the mounting hole, the mounting seat being attached to the mounting hole together with the valve body unit, the valve body unit comprising a stator, a rotor, a nut sleeve, and a spindle assembly, the stator, the rotor, and the nut sleeve being cooperated to move the spindle assembly, The valve seat further includes a fastening member, the fastening member having a limiting step disposed along an axial direction perpendicular to the mounting hole, the side surface of the valve seat having a connection hole communicating with the mounting hole, and one end of the fastening member being inserted from the connection hole into the mounting hole and abutting against the limiting step, The limiting step includes a first surface and a second surface, and an included angle between the first surface and the second surface is defined as A.

2. 2. The valve device according to claim 1, wherein an axial portion of the fastening member and the first surface abut one another, and a radial portion of the fastening member and the second surface abut one another.

3. 3. The valve assembly of claim 2, wherein an end face of the fastening member and the first surface abut one another, and an outer peripheral surface of the fastening member and the second surface abut one another.

4. 4. The valve device according to claim 1, wherein the first surface and the second surface intersect, and the included angle A is a right angle.

5. the first surface is planar and parallel to the axis of the mounting hole; 4. A valve device according to claim 1, wherein the second surface is planar and perpendicular to the axis of the mounting hole.

6. The height of the first surface along the axial direction of the valve body unit is H １ and the maximum length of the second surface along the radial direction of the valve body unit is H ２ the diameter of the fastening member is defined as D; and H １ , H ２ , and D is 0.5D≦H １ ≦2D, 0.3D≦H ２ The valve device according to claim 1 , wherein the relational expression: ≦D is satisfied.

7. 2. The valve assembly of claim 1, wherein the fastener member and the valve seat are threadedly engaged.

8. The number of the connection holes is two, and the two connection holes are provided on the same side surface of the valve seat at an interval; 2. The valve device according to claim 1, wherein the number of said fastening members is the same as the number of said connecting holes.

9. A valve device comprising a valve body unit, a mounting seat, and a valve seat, a mounting hole being drilled in the valve seat, the mounting seat being attached to the valve body unit, one end of the valve body unit adjacent to the mounting seat entering the mounting hole, the mounting seat being attached together with the valve body unit within the mounting hole, the valve body unit comprising a stator, a rotor, a nut sleeve, and a spindle assembly, the stator, the rotor and the nut sleeve cooperating to move the spindle assembly, The valve seat further includes a fastening member, the fastening member having a limiting step disposed along an axial direction perpendicular to the mounting hole, the side surface of the valve seat having a connection hole communicating with the mounting hole, and one end of the fastening member being inserted from the connection hole into the mounting hole and abutting against the limiting step, The number of the connection holes is two, and the two connection holes are provided on different side surfaces of the valve seat; Two limiting steps are provided on the mounting seat, and one of the connection holes corresponds to each limiting step; A valve device, characterized in that the number of said fastening members is the same as the number of said connecting holes.

10. A valve device comprising a valve body unit, a mounting seat, and a valve seat, a mounting hole being drilled in the valve seat, the mounting seat being attached to the valve body unit, one end of the valve body unit adjacent to the mounting seat fitting into the mounting hole, the mounting seat being attached together with the valve body unit within the mounting hole, the valve body unit comprising a stator, a rotor, a nut sleeve, and a spindle assembly, the stator, the rotor and the nut sleeve acting in cooperation to move the spindle assembly, The valve seat further includes a fastening member, the fastening member having a limiting step disposed along an axial direction perpendicular to the mounting hole, the side surface of the valve seat having a connection hole communicating with the mounting hole, and one end of the fastening member being inserted from the connection hole into the mounting hole and abutting against the limiting step, A valve device, characterized in that the number of the limiting steps is at least two, and the at least two limiting steps are arranged at intervals along the circumferential direction of the mounting seat.

11. A valve device comprising a valve body unit, a mounting seat, and a valve seat, a mounting hole being drilled in the valve seat, the mounting seat being attached to the valve body unit, one end of the valve body unit adjacent to the mounting seat fitting into the mounting hole, the mounting seat being attached together with the valve body unit within the mounting hole, the valve body unit comprising a stator, a rotor, a nut sleeve, and a spindle assembly, the stator, the rotor and the nut sleeve acting in cooperation to move the spindle assembly, The valve seat further includes a fastening member, the fastening member having a limiting step disposed along an axial direction perpendicular to the mounting hole, the side surface of the valve seat having a connection hole communicating with the mounting hole, and one end of the fastening member being inserted from the connection hole into the mounting hole and abutting against the limiting step, The valve device, characterized in that the mounting seat is fitted into the valve body unit and fixedly connected to the valve body unit.

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