CN115962330A

CN115962330A - Valve device

Info

Publication number: CN115962330A
Application number: CN202111193254.6A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2023-04-14

Abstract

The invention discloses a valve device, which comprises a guide sleeve and a valve seat, wherein the valve seat is provided with a mounting hole; the guide sleeve is provided with a first step surface, part of the guide sleeve is positioned in the mounting hole, the first step surface is abutted against the outer end face of the valve seat, a welding seam groove is formed between the guide sleeve and the part, with the aperture matched with that of the mounting hole, of the guide sleeve and/or the valve seat, an opening channel is formed, and the opening channel is communicated with the welding seam groove. By adopting the structure, when welding, the welding flux positioned in the valve seat can flow along the welding seam groove, and when the welding flux overflows through the opening channel, the welding is finished, and the welding end point can be visually judged; when the solder overflows from the opening channel, the solder is effectively filled between the guide sleeve and the valve seat, and the effectiveness of the quality of the solder can be quickly confirmed.

Description

Valve device

Technical Field

The invention relates to the technical field of refrigeration control, in particular to a valve device.

Background

The valve device, such as an electronic expansion valve, generally comprises a guide sleeve and a valve seat, wherein the valve seat is provided with a mounting hole, and the guide sleeve is inserted into the mounting hole and fixedly connected with the guide sleeve and the valve seat by welding in an assembling state. The welding quality is not easy to be visually checked from the outside after the welding of the guide sleeve and the valve seat is finished.

Disclosure of Invention

The invention aims to provide a valve device, wherein the welding end point and the welding quality of a guide sleeve and a valve seat can be intuitively judged.

In order to solve the technical problem, the invention provides a valve device, which comprises a guide sleeve and a valve seat, wherein the valve seat is provided with a mounting hole; the guide sleeve is provided with a first step surface, part of the guide sleeve is positioned in the mounting hole, the first step surface is abutted against the outer end face of the valve seat, a welding seam groove is formed between the guide sleeve and the part, with the aperture matched with that of the mounting hole, of the guide sleeve and/or the valve seat, an opening channel is formed, and the opening channel is communicated with the welding seam groove.

By adopting the structure, the welding seam groove is formed between the guide sleeve and the mounting hole, the opening channel is formed on the guide sleeve and/or the valve seat, when welding is carried out, the welding flux positioned in the valve seat can flow along the welding seam groove, when the welding flux overflows through the opening channel, the welding is finished, and a worker can judge the welding end point relatively intuitively; when the solder overflows from the open channel, the solder is effectively filled in the whole axial range of the part, matched with the aperture, of the guide sleeve and the mounting hole, and the working personnel can conveniently and quickly confirm the effectiveness of the weld quality.

The invention also provides a valve device, which comprises a guide sleeve and a valve seat, wherein the valve seat is provided with a mounting hole; the inner hole wall of the mounting hole is provided with a second step surface, part of the guide sleeve is positioned in the mounting hole and is abutted against the second step surface, a welding seam groove is formed between the guide sleeve and the part, matched with the inner diameter of the mounting hole, of the guide sleeve, and an outlet of the welding seam groove is exposed.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a valve assembly provided in the present invention;

FIG. 2 is a schematic view of one embodiment of the guide sleeve of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of another embodiment of the guide sleeve of FIG. 1;

FIG. 5 is a cross-sectional view of one embodiment of the valve seat of FIG. 1;

FIG. 6 is a cross-sectional view of another embodiment of the valve seat of FIG. 1;

FIG. 7 is a schematic structural view of another embodiment of a valve apparatus provided in accordance with the present invention;

FIG. 8 is a cross-sectional view of one embodiment of the valve seat of FIG. 7.

The reference numerals in fig. 1-8 are illustrated as follows:

1, a guide sleeve, 11 a first step surface and 12 annular notches;

2, chamfering the valve seat, the mounting hole 21, the second step surface 211, the outer end surface 22 and the 23;

3, welding seam grooves;

4 an open channel;

5, taking over.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are identical or similar in structure and/or function, and do not denote any particular limitation as to order and/or importance.

Example one

Referring to fig. 1 to 6, fig. 1 is a schematic structural view of an embodiment of a valve device according to the present invention, fig. 2 is a schematic structural view of an embodiment of a guide sleeve in fig. 1, fig. 3 is a sectional view of fig. 2, fig. 4 is a schematic structural view of another embodiment of a guide sleeve in fig. 1, fig. 5 is a sectional view of an embodiment of a valve seat in fig. 1, and fig. 6 is a sectional view of another embodiment of a valve seat in fig. 1.

As shown in fig. 1 to 3, the present invention provides a valve device, which includes a guide sleeve 1 and a valve seat 2, wherein the valve seat 2 is provided with a mounting hole 21; the outer wall surface of the guide sleeve 1 is provided with a first step surface 11, in an assembly state, the guide sleeve 1 is partially inserted into the mounting hole 21, the first step surface 11 is abutted against the outer end surface 22 of the valve seat 2, a welding seam groove 3 is formed between the guide sleeve 1 and the part, with the adaptive aperture, of the mounting hole 21, an opening channel 4 is formed on the guide sleeve 1 and/or the valve seat 2, and the opening channel 4 is communicated with the welding seam groove 3.

The part with the adaptive aperture refers to the part with the basically consistent radial sizes of the guide sleeve 1 and the mounting hole 21, and in the inserting state, the outer wall surface of the guide sleeve 1 and the inner hole wall of the mounting hole 21 can be attached or matched with each other with a relatively small gap.

By adopting the structure, the welding seam groove 3 is formed between the guide sleeve 1 and the mounting hole 21, the opening channel 4 is formed on the guide sleeve 1 and/or the valve seat 2, when welding is carried out, the welding flux positioned in the valve seat 2 can flow along the welding seam groove 3, when the welding flux overflows through the opening channel 4, the welding is finished, and a worker can judge the welding end point relatively intuitively; when the solder overflows from the opening channel 4, the solder is effectively filled in the whole axial range of the adaptive part of the aperture of the guide sleeve 1 and the aperture of the mounting hole 21, and the quick confirmation of the effectiveness of the welding seam quality can be conveniently carried out by workers.

The abutting engagement between first step face 11 and outer end face 22 may then optimize the coaxiality of the assembly.

As shown in fig. 2, the weld groove 3 may be provided on the outer wall surface of the guide sleeve 1; alternatively, as shown in fig. 6, the weld groove 3 may also be provided on the inner hole wall of the mounting hole 21; or, the weld groove 3 may also exist on the outer wall surface of the guide sleeve 1 and the inner hole wall of the mounting hole 21.

Likewise, as shown in fig. 4, the open passage 4 may be provided to the first step face 11; alternatively, as shown in fig. 6, the open passage 4 may also be provided on the outer end face 22 of the valve seat 2; still alternatively, the open passage 4 may also exist at both the first step face 11 and the outer end face 22.

It should be noted that, the shape of the weld groove 3 and the shape of the open channel 4 are not limited in the embodiments of the present invention, and in implementation, a person skilled in the art may set the shapes according to specific needs as long as the requirements of use can be met. In the embodiment of the drawings, the bead groove 3 may be linear as shown in fig. 2, or the bead groove 3 may be spiral as shown in fig. 6.

Further, as shown in fig. 3 and 5, a first corner position may be formed between the outer wall surface of the guide sleeve 1 and the first step surface 11, a second corner position may be formed between the inner wall surface of the mounting hole 21 and the outer end surface 22, the first corner position and the second corner position are disposed opposite to each other, and an annular groove is formed therebetween, and the weld groove 3 may communicate with the open channel 4 through the annular groove.

With the arrangement, the opening channel 4 is not required to be directly communicated with the welding seam groove 3, the installation direction of the guide sleeve 1 is not required to be deliberately kept when the guide sleeve 1 is assembled, and the installation of the guide sleeve 1 can be simpler; and a circle of solder filling area can be formed between the first corner position and the second corner position, which has positive significance for ensuring the reliability of welding.

It will be understood that the above-mentioned annular groove may not be present, and in this case, the installation direction of the guide sleeve 1 needs to be controlled so that the open channel 4 can be directly communicated with the weld groove 3.

The above-mentioned annular groove 3 may be formed by providing a radially inwardly extending annular notch 12 at a first corner location; alternatively, the annular groove 3 may be formed by providing a chamfer 23 at the second corner; still alternatively, the above-mentioned ring-shaped cut 12 and the chamfer 23 may also be present simultaneously, to jointly form the above-mentioned annular groove 3.

With continued reference to fig. 1, the valve device further comprises two connection pipes 5 connected to the valve seat 2 for the inflow and outflow of fluid.

Example two

Referring to fig. 7-8, fig. 7 is a schematic structural view of another embodiment of a valve device according to the present invention, and fig. 8 is a schematic structural view of an embodiment of a valve seat shown in fig. 7.

As shown in fig. 7 and 8, the present invention further provides a valve device, which includes a guide sleeve 1 and a valve seat 2, wherein the valve seat 2 is provided with a mounting hole 21; the inner hole wall of the mounting hole 21 can be formed with a second step surface 211, in an assembling state, part of the guide sleeve 1 is positioned in the mounting hole 21 and is abutted against the second step surface 211, a welding seam groove 3 is formed between the guide sleeve 1 and the part matched with the inner diameter of the mounting hole 21, and an outlet of the welding seam groove 3 is exposed.

Different from the first embodiment, the guide sleeve 1 in the present embodiment does not axially abut against the outer end surface 22 of the valve seat 2, but axially abuts against the second step surface 211 formed on the inner hole wall of the mounting hole 21, so as to ensure the axial insertion position of the guide sleeve 1 relative to the valve seat 2 and the coaxiality of the two.

In the embodiment, the outlet of the welding seam groove 3 can be exposed, the solder in the valve seat 2 can flow along the welding seam groove 3 during welding, when the solder overflows from the outlet of the welding seam groove 3, the welding is finished, and a worker can judge the welding end point relatively intuitively; when the solder overflows from the outlet of the welding seam groove 3, the solder is effectively filled in the whole axial range of the part where the aperture of the guide sleeve 1 is matched with that of the mounting hole 21, and the welding seam quality can be quickly confirmed by workers.

The installation position and the structural shape of the weld groove 3 are defined in the first embodiment, and a repetitive description is not given here.

Further, a second corner position can be formed between the inner hole wall of the mounting hole 21 and the outer end face 22, an annular groove can be formed between the second corner position and the outer wall face of the guide sleeve 1, and the annular groove is communicated with the welding seam groove 3, so that a circle of welding material filling area is formed at the second corner position, and the welding reliability can be further effectively ensured.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and embellishments can be made without departing from the principle of the present invention, and these modifications and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. The valve device comprises a guide sleeve (1) and a valve seat (2), wherein the valve seat (2) is provided with a mounting hole (21), and is characterized in that a first step surface (11) is formed on the guide sleeve (1), part of the guide sleeve (1) is located in the mounting hole (21), the first step surface (11) is abutted to an outer end surface (22) of the valve seat (2), a welding seam groove (3) is formed between the guide sleeve (1) and the mounting hole (21) in a hole diameter matching part, an opening channel (4) is formed on the guide sleeve (1) and/or the valve seat (2), and the opening channel (4) is communicated with the welding seam groove (3).

2. The valve device according to claim 1, wherein a first corner position is formed between the outer wall surface of the guide bush (1) and the first step surface (11), a second corner position is formed between the inner hole wall of the mounting hole (21) and the outer end surface (22), the first corner position and the second corner position are oppositely arranged with an annular groove formed therebetween, and the weld groove (3) is communicated with the open channel (4) through the annular groove.

3. A valve device according to claim 2, characterized in that the outer wall surface of the guide sleeve (1) is provided with a radially inwardly extending ring cut (12) at said first corner position; alternatively, the first and second electrodes may be,

and a chamfer (23) is arranged at the second corner position.

4. A valve device according to any one of claims 1-3, characterized in that the weld groove (3) is linear or spiral.

5. The valve device according to claim 4, wherein the weld groove (3) is provided on an outer wall surface of the guide bush (1) or an inner wall surface of the mounting hole (21).

6. The valve device comprises a guide sleeve (1) and a valve seat (2), wherein the valve seat (2) is provided with a mounting hole (21), and the valve device is characterized in that a second step surface (211) is formed on the inner hole wall of the mounting hole (21), part of the guide sleeve (1) is located in the mounting hole (21) and abutted against the second step surface (211), a welding seam groove (3) is formed between the guide sleeve (1) and the part matched with the inner diameter of the mounting hole (21), and the outlet of the welding seam groove (3) is exposed.

7. Valve device according to claim 6, characterized in that the weld groove (3) is linear or helical.

8. The valve device according to claim 6, characterized in that a second corner position is formed between the inner hole wall of the mounting hole (21) and the outer end face (22), and an annular groove is formed between the second corner position and the outer wall surface of the guide sleeve (1), and the annular groove is communicated with the weld groove (3).