CN218582370U - Switching valve - Google Patents
Switching valve Download PDFInfo
- Publication number
- CN218582370U CN218582370U CN202222606627.4U CN202222606627U CN218582370U CN 218582370 U CN218582370 U CN 218582370U CN 202222606627 U CN202222606627 U CN 202222606627U CN 218582370 U CN218582370 U CN 218582370U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- connecting pipe
- valve
- hole
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model belongs to the technical field of refrigeration plant, concretely relates to diverter valve. A switching valve comprising, a valve body; the valve cavity is arranged in the valve body, the cylinder wall of the valve body is provided with a through hole, and the edge of the through hole is provided with an extension sleeve connected with the valve body; a valve seat; the valve seat is positioned in the valve cavity and connected with the inner wall of the valve body; the valve seat is provided with a valve seat hole corresponding to the extension sleeve; taking over the pipe; one end of the connecting pipe penetrates through the extension sleeve and then extends into the valve seat hole, and the other end of the connecting pipe is positioned outside the valve body; the inner wall of the extension sleeve and the inner wall of the valve seat hole are hermetically connected with the outer wall of the connecting pipe. The utility model discloses newly-increased extension cover on the valve body can make the takeover and extend set sealing connection, avoids the refrigerant outflow valve body external.
Description
Technical Field
The utility model belongs to the technical field of refrigeration plant, concretely relates to diverter valve.
Background
In an air conditioning system, a switching valve is adopted to realize the function of switching between cooling and heating.
The structure of the existing switching valve is shown in fig. 1, and the switching valve comprises a valve body 01, a valve seat 02 and a connecting pipe 03, wherein the valve body 01 is provided with a valve body hole, the valve seat 02 is provided with a valve seat hole, the valve body hole and the valve seat hole are equal in size and are in one-to-one correspondence, and the connecting pipe 03 penetrates through the valve body hole and then is installed in the valve seat hole of the valve seat 02. When manufacturing, firstly, the welding ring is put into the valve seat hole; then aligning the valve body holes with the valve seat holes one by one, assembling the connecting pipe 03 penetrating through the valve body holes to the valve seat holes and enabling the connecting pipe 03 to abut against the welding ring; and then, heating and melting the welding ring, filling the gap between the connecting pipe 03 and the valve seat 02 with the melted welding flux through capillary action, filling the gap between the valve seat 02 and the valve body 01, and simultaneously enabling the welding flux to flow into the gap between the valve body 01 and the connecting pipe 03 so as to connect the connecting pipe 03 and the valve body 01.
However, the following phenomena often occur in the switching valve during welding:
the contact area between the arc surface of the valve body 01 and the arc surface of the valve seat 02 is large, and solder cannot be guaranteed to fill all gaps between the valve seat 02 and the valve body 01, so that broken welding occurs between the valve body 01 and the valve seat 02; especially, after the valve body 01 or the valve seat 02 is deformed due to processing, the distance between the arc surface of the valve body 01 and the arc surface of the valve seat 02 is increased, and effective welding cannot be performed through the welding flux. The contact area of the connecting pipe 03 and the valve body 01 is small, so that the connecting pipe 03 and the valve body 01 are welded firmly, and a gap is formed between the connecting pipe 03 and the valve body 01. The refrigerant can flow out of the valve body 01 through the gap between the valve seat 02 and the valve body 01 and the gap between the connecting pipe 03 and the valve body 01.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem, a switching valve is provided.
In order to realize the technical purpose, the utility model adopts the following technical scheme:
a switching valve comprises a switching valve body and a valve body,
a valve body; the valve cavity is arranged in the valve body, a through hole is formed in the wall of the valve body, and an extension sleeve connected with the valve body is arranged at the edge of the through hole;
a valve seat; the valve seat is positioned in the valve cavity and connected with the inner wall of the valve body; the valve seat is provided with a valve seat hole corresponding to the extension sleeve;
taking over a pipe; one end of the connecting pipe penetrates through the extension sleeve and then extends into the valve seat hole, and the other end of the connecting pipe is positioned outside the valve body; the inner wall of the extension sleeve and the inner wall of the valve seat hole are hermetically connected with the outer wall of the connecting pipe.
Furthermore, a first welding ring is sleeved outside the connecting pipe, and the first welding ring is attached to the opening end, far away from the valve seat, of the extension sleeve; the welding flux of the first welding ring flows into a gap between the inner wall of the extension sleeve and the outer wall of the connecting pipe.
Furthermore, a second welding ring is arranged in the valve seat hole, the second welding ring is positioned at one end of the connecting pipe or close to one end of the connecting pipe, and welding flux of the second welding ring flows into a gap between the inner wall of the valve seat hole and the outer wall of the connecting pipe.
Furthermore, the joint of the valve seat and the extension sleeve is a chamfer, and an accommodating cavity is formed among the chamfer, the outer wall of the connecting pipe and the valve seat; the accommodating cavity is used for accommodating the melted solder of the first welding ring and/or the second welding ring.
Further, the valve seat bore comprises a first bore section and a second bore section, the first bore section having an inner diameter greater than the second bore section; a step surface is arranged between the first hole section and the second hole section and is abutted against one end of the connecting pipe; the inner wall of first hole section is equipped with the recess, and the second welds the ring and is located the recess and is located between disk seat and the takeover.
Further, the valve seat bore comprises a first bore section and a second bore section, the first bore section having an inner diameter greater than the second bore section; a stepped surface is arranged between the first hole section and the second hole section, a groove is formed in the stepped surface, and the second welding ring is located between the groove and one end of the connecting pipe.
Further, the inner diameter of the first hole section is larger than that of the second hole section; a stepped surface is arranged between the first hole section and the second hole section, and the second welding ring is positioned between the stepped surface and one end of the connecting pipe; the second bore section has a stepped inner wall.
Further, the length of the extension sleeve extending along the radial direction of the valve body and outwards of the valve body is L, and the length is more than 5mm and more than 0.5mm.
Furthermore, the number of the extension sleeve, the number of the connecting pipe and the number of the valve seat holes are three and are respectively in one-to-one correspondence.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The utility model discloses newly-increased extension cover on the valve body makes takeover and extends cover sealing connection, avoids the refrigerant outflow valve body external.
(2) The welding area of the connecting pipe of the utility model is divided into two parts, one part of the connecting pipe is welded with the extending sleeve through the welding flux after the first welding ring is melted, the other part of the connecting pipe is welded with the valve seat through the welding flux after the second welding ring is melted, and the two parts of welding parts do not influence each other and synergistically enhance the firmness of the welding of the connecting pipe; the first welding ring and the second welding ring are used, so that full welding or sealing welding is not needed between the valve seat and the valve body.
(3) The arrangement of the accommodating cavity can prevent the excessive solder of the first welding ring and the excessive solder of the second welding ring from flowing into the gap between the valve body and the valve seat, so that the welding sealing performance of the connecting pipe and the valve seat is ensured, and the welding sealing performance of the connecting pipe and the extension sleeve is ensured.
(4) The structural arrangement of the valve seat hole can prevent the solder of the second welding ring from flowing to the upper surface of the valve seat.
Drawings
FIG. 1 is a block diagram of a prior art switching valve;
FIG. 2 is an overall structure view of the switching valve;
FIG. 3 is a view of the valve body;
FIG. 4 is a valve seat structure view;
FIG. 5 is a view of the valve seat orifice;
FIG. 6 is a view showing a connection structure of a nipple and a valve seat;
FIG. 7 is a view showing another coupling structure of the adapter tube and the valve seat;
FIG. 8 is a view showing the connection structure of other connecting pipes and valve seats;
in the figure, a valve body 1, a valve cavity 11, a through hole 12, an extension sleeve 13, a valve seat 2, a valve seat hole 21, a first hole section 211, a second hole section 212, a stepped surface 213, a groove 214, a connecting pipe 3, a first welding ring 4, a second welding ring 5, a chamfer 6 and a containing cavity 7 are arranged.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
As shown in fig. 2 to 8, a switching valve includes a valve body 1, a valve seat 2, and a nipple 3. Wherein, the valve cavity 11 is arranged in the valve body 1, the cylinder wall of the valve body 1 is provided with a through hole 12, and the edge of the through hole 12 is provided with an extension sleeve 13 connected with the valve body 1. The valve seat 2 is located in the valve chamber 11. The valve seat 2 is provided with a valve seat hole 21 corresponding to the extension sleeve 13. One end of the connecting pipe 3 penetrates through the extension sleeve 13 and then extends into the valve seat hole 21, and the other end is positioned outside the valve body 1. The extension sleeve 13 and the valve seat hole 21 are connected with the connecting pipe 3 in a sealing way. The extension sleeve 13 and the valve body 1 can be of an integrated structure, and the extension sleeve 13 can be processed on the valve body 1 by adopting a stamping tool. The welding length between the extension sleeve 13 and the connecting pipe 3 is long, and the welding is easy, so that the refrigerant in the valve cavity 11 is prevented from flowing out of the valve body 1. The problem that in the figure 1, the connecting pipe 03 and the valve body 01 are not welded tightly to cause the refrigerant to flow out of the valve body 01 is solved. Because the connection pipe 3 and the extension sleeve 13 are welded tightly, the refrigerant cannot flow out of the valve body 1.
The connecting pipe 3 is sleeved with a first welding ring 4, and the first welding ring 4 is attached to the opening end of the extension sleeve 13 far away from the valve seat 2. The solder of the first solder ring 4 flows into the gap between the inner wall of the extension sleeve 13 and the outer wall of the adapter tube 3. The first welding ring 4 of the embodiment is positioned outside the valve body 1, so that the installation is easy, and the time required by the whole machining of the switching valve can be shortened. The welding flux melted by the first welding ring 4 can enter between the extension sleeve 13 and the connecting pipe 3 under the capillary action, so that the problem that the refrigerant flows out of the valve body 1 is solved, namely the problem that the refrigerant leaks out is solved. A second welding ring 5 is arranged in the valve seat hole 21, and the second welding ring 5 is positioned at one end of the connecting pipe 3 or close to one end of the connecting pipe 3. The welding flux melted by the second welding ring 5 can enter a gap between the inner wall of the valve seat hole 21 and the outer wall of the connecting pipe 3 under the capillary action, so that the problem that the refrigerant leaks from the valve seat hole 21 and flows into the adjacent valve seat hole is solved, namely the problem of internal leakage of the refrigerant is solved. The first welding ring 4 is combined with the second welding ring 5, so that full welding or sealing welding is not needed between the valve seat 2 and the valve body 1, and small-area welding materials or no welding materials can be filled between the valve seat 2 and the valve body 1.
The junction of the valve seat 2 and the extension sleeve 13 is a chamfer 6, an accommodating cavity 7 is formed among the chamfer 6, the outer wall of the connecting pipe 3 and the valve seat 2, and the accommodating cavity 7 is used for accommodating the melted welding flux of the first welding ring 4 and/or the second welding ring 5. If the accommodating cavity 7 is not arranged, the solder melted by the first welding ring 4 enters the gap between the valve body 1 and the valve seat 2 under the capillary action, so that less solder is left between the extension sleeve 13 and the connecting pipe 3, the welding sealing performance between the extension sleeve 13 and the connecting pipe 3 is weakened, and the refrigerant is easy to flow out of the valve body 1. Similarly, if the accommodating cavity 7 is not provided, the solder melted by the second welding ring 5 enters the gap between the valve body 1 and the valve seat 2 under the capillary action, so that less solder is left between the inner wall of the valve seat hole 21 and the outer wall of the connecting pipe 3, the welding sealing performance between the valve seat hole 21 and the connecting pipe 3 is weakened, the refrigerant between the adjacent valve seat holes 21 is easy to mix with each other, and the normal use of the switching valve is affected. The accommodating cavity 7 can prevent excessive solder melted by the first welding ring 4 from entering a gap between the valve body 1 and the valve seat 2, ensure that sufficient solder exists between the connecting pipe 3 and the extension sleeve 13, and ensure the sealing performance of welding between the connecting pipe 3 and the extension sleeve 13. Similarly, the accommodating cavity 7 can prevent excessive solder melted by the second welding ring 5 from entering the gap between the valve body 1 and the valve seat 2, so that sufficient solder is ensured between the connecting pipe 3 and the valve seat 2, and the sealing performance of welding between the connecting pipe 3 and the valve seat 2 is ensured. Therefore, in the present embodiment, one welding ring in the existing structure is adjusted to be two, and in addition, the arrangement of the accommodating cavity 7 fully ensures the sealing performance of the welding between the connection pipe 3 and the extension sleeve 13 and the sealing performance of the welding between the connection pipe 3 and the valve seat 2.
In order to further improve the stability of the connection between the valve seat 2 and the valve body 1, the valve seat 2 and the valve body 1 can be fixed through spot welding. The connection stability between the valve seat 2 and the valve body 1 can also be improved by the interference fit of the connecting pipe 3 and the extension sleeve 13 and the interference fit of the connecting pipe 3 and the valve seat hole 21. One or both of the two modes can be selected.
As shown in fig. 5 and 6, in one embodiment, the valve seat bore 21 includes a first bore section 211 and a second bore section 212, and the first bore section 211 has a larger inner diameter than the second bore section 212. A stepped surface 213 is provided between the first bore section 211 and the second bore section 212, and the stepped surface 213 abuts against the end of the adapter 3. The inner wall of the first hole section 211 is provided with a groove 214, and the second welding ring 5 is positioned in the groove 214 and between the valve seat 2 and the adapter 3. The first hole section 211 and the second hole section 212 are straight hole sections. Before welding, the second welding ring 5 is placed in the groove 214, and then one end of the connecting pipe 3 is inserted into the first hole section 211, so that the connecting pipe 3 is tightly matched with the inner wall of the first hole section 211, and the end part of the connecting pipe 3 is abutted to the stepped surface 213. The second welding ring 5 is melted by heating means such as brazing in a furnace and moves downwards through capillary action to fill a gap between the connecting pipe 3 and the valve seat 2. Since the end of the adapter 3 abuts against the stepped surface 213, the solder does not move upward to the upper surface of the valve seat 2 because it has a certain resistance to the flowing solder.
As another example, as shown in fig. 7, the valve seat bore 21 includes a first bore section 211 and a second bore section 212, and the first bore section 211 has a larger inner diameter than the second bore section 212. A stepped surface 213 is arranged between the first hole section 211 and the second hole section 212, a groove 214 is arranged on the stepped surface 213, and the second welding ring 5 is arranged between the groove 214 and one end of the adapter 3. Before welding, the second welding ring 5 is placed on the stepped surface 213, and then one end of the connecting pipe 3 is inserted into the first hole section 211, so that the outer wall of the connecting pipe 3 is tightly matched with the inner wall of the first hole section 211, and the end part of the connecting pipe 3 is abutted to the second welding ring 5. The second welding ring 5 is melted by heating means such as brazing in a furnace and moves downwards through capillary action to fill a gap between the connecting pipe 3 and the valve seat 2. Due to the existence of the groove 214 at the stepped surface 213, a part of the solder can be accommodated, and the solder is prevented from moving upwards to the upper surface of the valve seat 2. The groove 214 is V-shaped, and one side of the V-shape and one side wall of the first hole section 211 are located on the same plane; the other surface faces the second welding ring 5 and is propped against the second welding ring 5, and the V-shaped groove can effectively prevent the solder in the second welding ring 5 from continuously flowing towards the upper surface of the valve seat 2.
As a further example, as shown in fig. 8, the valve seat bore 21 includes a first bore section 211 and a second bore section 212, and the first bore section 211 has a larger inner diameter than the second bore section 212. A stepped surface 213 is provided between the first bore section 211 and the second bore section 212, and the second welding ring 5 is located between the stepped surface 213 and the end of the nipple 3. The second bore section 212 has a stepped inner wall. Before welding, the second welding ring 5 is placed on the stepped surface 213, and then one end of the connecting pipe 3 is inserted into the first hole section 211, so that the outer wall of the connecting pipe 3 is in tight fit with the inner wall of the first hole section 211, and the end part of the connecting pipe 3 is abutted to the second welding ring 5. The second welding ring 5 is melted by heating means such as brazing in a furnace and moves downwards through capillary action to fill a gap between the connecting pipe 3 and the valve seat 2. Due to the existence of the stepped inner wall of the second hole section 212, the solder flow length can be increased, and the solder is prevented from moving upwards to the upper surface of the valve seat 2.
In order to ensure the welding firmness between the extension sleeve 13 and the connecting pipe 3, the length of the extension sleeve 13 extending out of the valve body 1 along the radial direction of the valve body 1 is L, and the length is more than 5mm and more than 0.5mm. In order to verify the optimal length of the L, the L is taken as different length values, the different length values are continuously tested and verified, the sealing performance of the solder between the extension sleeve 13 and the connecting pipe 3 under the different length values is analyzed, and the welding sealing performance between the extension sleeve 13 and the connecting pipe 3 can be ensured and the cost can be considered only when the length of 5mm is larger than that of L and larger than 0.5mm.
The number of the extension sleeve 13, the adapter tube 3 and the valve seat hole 21 is three, and the extension sleeve, the adapter tube and the valve seat hole correspond to one another respectively. The three connecting pipes respectively correspond to a connecting pipe D, a connecting pipe S and a connecting pipe E of the switching valve.
The machining method of the switching valve comprises the following steps:
s1: processing an extension sleeve 13 on the cylinder wall of the valve body 1 along the radial direction of the valve body 1;
s2: mounting the valve seat 2 into the valve body 1 with the valve seat bore 21 of the valve seat 2 aligned with the extension sleeve 13;
s3: the end part of the adapter tube 3 is inserted into the valve seat hole 21 after penetrating the extension sleeve 13;
s4: sleeving the first welding ring 4 outside the connecting pipe 3, and enabling the first welding ring 4 to abut against the opening end of the extension sleeve 13 far away from the valve seat 2;
s5: placing a second welding ring 5 in the first through hole of the valve seat 2, and placing the second welding ring 5 at one end of the connecting pipe 3 or close to one end of the connecting pipe 3;
s6: and brazing the assembled valve body 1, wherein the first welding ring 4 and the second welding ring 5 are melted in the brazing process, the melted welding flux of the first welding ring 4 flows into the space between the connecting pipe 3 and the extension sleeve 13, and the melted welding flux of the second welding ring 5 flows into the space between the valve seat 2 and the connecting pipe 3.
In step S1, the joint between the extension sleeve 13 and the valve body 1 is machined to form a chamfer 6. The processing length L of the extension sleeve 13 is more than 5mm and more than L and more than 0.5mm.
In the step S2, the valve seat 2 and the valve body 1 may be fixed by spot welding to improve the stability of connection between the valve seat 2 and the valve body 1. In step S3, the adapter 3 is in interference fit with the extension sleeve 13, and the adapter 3 is in interference fit with the valve seat hole 21, so as to improve the stability of the connection between the valve seat 2 and the valve body 1. One or both of the two modes can be selected.
The step S2 comprises the steps of,
s21: the valve seat hole 21 is processed into two sections, namely a first hole section 211 and a second hole section 212; the inner diameter of the first hole section 211 is larger than that of the second hole section 212, and a stepped surface 213 is formed between the first hole section 211 and the second hole section 212;
s22: the inner wall of the first hole section 211 is processed into a groove 214, or the inner wall of the second hole section 212 is processed into a step shape, or the groove 214 is processed into a step surface.
In step S5, when the groove 214 is machined on the inner wall of the first hole section 211, the second welding ring 5 is placed in the groove 214 and between the valve seat 2 and the adapter 3; when the stepped surface 213 is processed with the groove 214, the second welding ring 5 is positioned between the groove 214 and the end of the adapter 3; when the inner wall of the second hole section 212 is processed into a step shape, the second welding ring 5 is located between the step surface 213 between the first hole section 211 and the second hole section 212 and the end of the adapter 3.
In step S6, the melted solder of the first welding ring 4 is used to weld the adapter 3 and the extension sleeve 13, and the melted solder of the second welding ring 5 is used to weld the adapter 3 and the valve seat 2.
The embodiments of the present invention have been described in detail, and those skilled in the art can easily understand that there are various changes in the embodiments according to the idea of the present invention, and such changes should be considered as the protection scope of the present invention.
Claims (10)
1. A switching valve, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a valve body (1); a valve cavity (11) is arranged in the valve body (1), a through hole (12) is formed in the wall of the valve body (1), and an extension sleeve (13) connected with the valve body (1) is arranged at the edge of the through hole (12);
a valve seat (2); the valve seat (2) is positioned in the valve cavity (11); the valve seat (2) is provided with a valve seat hole (21) corresponding to the extension sleeve (13);
a connecting pipe (3); one end of the connecting pipe (3) penetrates through the extension sleeve (13) and then extends into the valve seat hole (21), and the other end of the connecting pipe is positioned outside the valve body (1); the connecting pipe (3) is connected with the extension sleeve (13) in a sealing mode, and the connecting pipe (3) is connected with the valve seat hole (21) in a sealing mode.
2. The switching valve according to claim 1, characterized in that: a first welding ring (4) is sleeved outside the connecting pipe (3), and the first welding ring (4) is attached to the opening end, far away from the valve seat (2), of the extending sleeve (13); the welding flux of the first welding ring (4) flows into a gap between the inner wall of the extension sleeve (13) and the outer wall of the connecting pipe (3).
3. The switching valve according to claim 2, characterized in that: a second welding ring (5) is arranged in the valve seat hole (21), the second welding ring (5) is positioned at one end of the connecting pipe (3) or close to one end of the connecting pipe (3), and the welding flux of the second welding ring (5) flows into a gap between the inner wall of the valve seat hole (21) and the outer wall of the connecting pipe (3).
4. The switching valve according to claim 3, characterized in that: a chamfer (6) is arranged at the joint of the valve seat (2) and the extension sleeve (13), and an accommodating cavity (7) is formed among the chamfer (6), the outer wall of the connecting pipe (3) and the valve seat (2); the accommodating cavity (7) is used for accommodating the melted solder of the first welding ring (4) and/or the second welding ring (5).
5. The switching valve according to claim 1, characterized in that: the valve seat (2) and the valve body (1) are fixed through spot welding, and/or the connecting pipe (3) is in interference fit with the extending sleeve (13) and the connecting pipe (3) is in interference fit with the valve seat hole (21).
6. The switching valve according to claim 3, characterized in that: the valve seat bore (21) comprises a first bore section (211) and a second bore section (212), the first bore section (211) having a larger inner diameter than the second bore section (212); a step surface (213) is arranged between the first hole section (211) and the second hole section (212), and the step surface (213) is propped against one end of the connecting pipe (3); the inner wall of the first hole section (211) is provided with a groove (214), and the second welding ring (5) is positioned in the groove (214) and between the valve seat (2) and the connecting pipe (3).
7. The switching valve according to claim 3, characterized in that: the valve seat bore (21) comprises a first bore section (211) and a second bore section (212), the first bore section (211) having a larger inner diameter than the second bore section (212); stepped surfaces (213) are arranged between the first hole sections (211) and the second hole sections (212), grooves (214) are formed in the stepped surfaces (213), and the second welding rings (5) are located between the grooves (214) and one ends of the connecting pipes (3).
8. The switching valve according to claim 3, characterized in that: the valve seat bore (21) comprises a first bore section (211) and a second bore section (212), the first bore section (211) having a larger inner diameter than the second bore section (212); a step surface (213) is arranged between the first hole section (211) and the second hole section (212), and the second welding ring (5) is positioned between the step surface (213) and one end of the connecting pipe (3); the second bore section (212) has a stepped inner wall.
9. The switching valve according to any one of claims 1 to 8, characterized in that: the length of the extension sleeve (13) extending along the radial direction of the valve body (1) and outward of the valve body (1) is L, and the length is more than 5mm and more than 0.5mm.
10. The switching valve according to any one of claims 1 to 8, characterized in that: the number of the extension sleeve (13), the number of the connecting pipe (3) and the number of the valve seat holes (21) are three and are respectively in one-to-one correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222606627.4U CN218582370U (en) | 2022-09-30 | 2022-09-30 | Switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222606627.4U CN218582370U (en) | 2022-09-30 | 2022-09-30 | Switching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218582370U true CN218582370U (en) | 2023-03-07 |
Family
ID=85366397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222606627.4U Active CN218582370U (en) | 2022-09-30 | 2022-09-30 | Switching valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218582370U (en) |
-
2022
- 2022-09-30 CN CN202222606627.4U patent/CN218582370U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110459832B (en) | Heat exchange device | |
| CN110459830B (en) | Heat exchange device | |
| KR102323398B1 (en) | Welded construction of the inlet and outlet pipes of the heat exchanger | |
| CN201475535U (en) | Thin-wall stainless steel pipeline socket soldering connecting structure | |
| CN218582370U (en) | Switching valve | |
| CN218582371U (en) | Switching valve | |
| CN108506548B (en) | Electronic expansion valve | |
| CN111397406A (en) | Plate heat exchanger | |
| CN117847278A (en) | Switching valve and processing method thereof | |
| EP0809082B1 (en) | Oil cooler with improved coolant hose connection | |
| US6648375B1 (en) | Pilot insert seal for a tube fitting | |
| US20050062285A1 (en) | Hydraulic port weld stud | |
| CN113865163A (en) | Stainless steel liquid separator, air conditioner and manufacturing method of stainless steel liquid separator | |
| EP3575660B1 (en) | Connector to connect two portions of a fluid refrigerant circuit | |
| CA2679252A1 (en) | One-piece elbow hydraulic fitting designed for electric arc stud welding | |
| CN102486356A (en) | Connection method for pipe seat connector of micro-channel heat exchanger | |
| JPH02301681A (en) | Manufacture of compressor | |
| CN117847279A (en) | Switching valve and manufacturing method thereof | |
| CN219852728U (en) | Air conditioner piping connection joint | |
| CN218582255U (en) | Valve module | |
| CN114749775B (en) | Embedded connecting pipe structure and assembly welding method thereof | |
| CN218208231U (en) | Pipeline connecting structure on four-way reversing valve | |
| CN207961872U (en) | A kind of connecting pipe and three-way pipe | |
| CN112475671B (en) | Take gas protection device's thin-walled tube and header angle welded assembly fixture | |
| JP7398560B2 (en) | electronic expansion valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |