CN111810480B - Reversing valve and manufacturing method thereof - Google Patents
Reversing valve and manufacturing method thereof Download PDFInfo
- Publication number
- CN111810480B CN111810480B CN201910293533.6A CN201910293533A CN111810480B CN 111810480 B CN111810480 B CN 111810480B CN 201910293533 A CN201910293533 A CN 201910293533A CN 111810480 B CN111810480 B CN 111810480B
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- valve
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- wall
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- 238000003466 welding Methods 0.000 claims abstract description 37
- 238000003780 insertion Methods 0.000 claims abstract description 30
- 230000037431 insertion Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 210000002445 nipple Anatomy 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000005555 metalworking Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/10—Welded housings
- F16K27/105—Welded housings for gate valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a reversing valve and a manufacturing method thereof, wherein a valve body part comprises a valve seat and a first connecting pipe, the valve seat is fixedly connected with the first connecting pipe, the valve seat comprises a first valve seat hole, the first valve seat hole comprises a first hole section, the inner diameter of the first hole section is smaller than that of the second hole section, the first connecting pipe comprises an insertion section, a welding material is arranged between the outer wall of the insertion section and the inner wall of the first hole section, an annular containing cavity is arranged between the outer wall of the insertion section and the inner wall of the second hole section, and at least part of the annular containing cavity is provided with the welding material. By the arrangement, the extrusion force of the valve seat to the connecting pipe can be reduced.
Description
Technical Field
The invention relates to the technical field of fluid control, in particular to a reversing valve and a manufacturing method thereof.
Background
In the current air conditioning system, a reversing valve is adopted to realize the conversion function of refrigeration and heating. The reversing valve comprises a valve seat and a connecting pipe. When the valve seat is assembled with the adapter, the valve seat may be deformed by the extrusion force of the adapter.
Therefore, how to reduce the pressing force of the valve seat against the adapter tube at the time of assembly provides an improved subject for those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a reversing valve to reduce the pressing force of a valve seat against a nipple.
In order to achieve the above object, the reversing valve provided by the invention comprises a valve body part and a sliding block part, wherein the valve body part comprises a valve seat, a valve body and a first connecting pipe, the valve seat is fixedly connected with the first connecting pipe, the reversing valve is characterized in that the valve seat comprises a first valve seat hole, the first valve seat hole comprises a first hole section and a second hole section, the inner diameter of the first hole section is smaller than that of the second hole section, the first connecting pipe comprises an insertion section positioned in the first valve seat hole, a welding material is arranged between the outer wall of the insertion section and the inner wall of the first hole section, an annular accommodating cavity is arranged between the outer wall of the insertion section and the inner wall of the second hole section, and at least part of the annular accommodating cavity is provided with the welding material.
The reversing valve provided by the invention comprises a valve seat and a first connecting pipe, wherein the valve seat is fixedly connected with the first connecting pipe, the valve seat comprises a first valve seat hole, the first valve seat hole comprises a first hole section, the inner diameter of the first hole section is smaller than that of the second hole section, the first connecting pipe comprises an insertion section, a welding material is arranged between the outer wall of the insertion section and the inner wall of the first hole section, an annular containing cavity is arranged between the outer wall of the insertion section and the inner wall of the second hole section, and at least part of the annular containing cavity is provided with the welding material. By the arrangement, the extrusion force of the valve seat to the connecting pipe can be reduced.
The invention also provides a manufacturing method of the reversing valve with the functions, which comprises the following steps:
Step A: preparing a valve body, a first connecting pipe and a sliding block component; preparing a valve seat, namely, metalworking a metal material into a blank of the valve seat, and turning the blank of the valve seat into a first valve seat hole comprising a first hole section and a second hole section, wherein the inner diameter of the first hole section is smaller than that of the second hole section;
and (B) step (B): placing welding materials into the first valve seat hole, and inserting the insertion section of the first connecting pipe into the first hole section for tight fit to form a pre-welding assembly;
step C: welding the pre-welding assembly, wherein the welding material is melted after being heated, and fills the space between the outer wall of the insertion section and the inner wall of the first hole section and the space between the outer wall of the insertion section and the inner wall of the second hole section to form a valve body part;
step D: and assembling the valve body part and the sliding block part to form the reversing valve.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a reversing valve according to the present invention;
FIG. 2 is an enlarged schematic view of the portion I of FIG. 1;
FIG. 3a is a schematic cross-sectional view of a valve seat of the reversing valve of FIG. 1;
FIG. 3b is a schematic cross-sectional view of the valve seat K-K' of FIG. 3;
Fig. 4 is an enlarged partial schematic view of a valve seat of another reversing valve according to the present invention.
Detailed Description
The invention provides a reversing valve, which is used for reducing the extrusion force of a valve seat received by a connecting pipe.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
FIG. 1 is a schematic cross-sectional view of a reversing valve according to the present invention; FIG. 2 is an enlarged schematic view of the portion I of FIG. 1; FIG. 3a is a schematic cross-sectional view of a valve seat of the reversing valve of FIG. 1; FIG. 3b is a schematic cross-sectional view of the valve seat K-K' of FIG. 3.
As shown in fig. 1, 2, 3a and 3b, the reversing valve includes a valve body member 1 and a slider member 2, and the valve body member 1 includes a valve seat 11, a valve body 12 and a nipple 13. The valve body 12 is tubular in structure with a valve cavity 120. The slider member 2 and the valve seat 11 are disposed in the valve chamber 120, and the valve seat 11 is welded to the valve body 12. The valve seat 11 is made of metal material by metal processing, the cross section outline of the valve seat 11 is D-shaped, the upper surface 114 of the valve seat 11 is a plane, the valve seat 11 is provided with a first valve seat hole 111, a second valve seat hole 112 and a third valve seat hole 113, and the first valve seat hole 111, the second valve seat hole 112 and the third valve seat hole 113 are arranged on the valve seat 11 in parallel. The connecting pipes 13 comprise a D connecting pipe, a first connecting pipe 131, a second connecting pipe 132 and a third connecting pipe 133, wherein the first connecting pipe 131 is arranged in the first valve seat hole 111, the second connecting pipe 132 is arranged in the second valve seat hole 112, the third connecting pipe 133 is arranged in the third valve seat hole 113, and the D connecting pipe is arranged on one side of the valve body 12 far away from the valve seat 11. The slider part 2 is able to slide on the upper surface 114 of the valve seat 11 to control the communication and closure between the D/first/second/third nipple and the valve chamber 10, and between the respective nipple (D/first/second/third nipple).
In this embodiment, the first valve seat hole 111 includes a first hole section 1111 and a second hole section 1112, the first hole section 1111 is a straight hole section, that is, the inner diameters of the first hole section 1111 are equal, the inner diameter of the first hole section 1111 is smaller than the inner diameter of the second hole section 1112, the first adapter tube 131 includes an insertion section 1310 located in the first valve seat hole 111, and the first adapter tube 131 is inserted into the first valve seat hole 111 before welding, so that the outer wall of the insertion section 1310 is tightly matched with the inner wall of the first hole section 1111. Tight fit here means: the insert section 1310 is secured to the first bore section 1111 by an interference fit; or insert segment 1310 is positioned with first hole segment 1111 by a transition fit, such as by virtue of the ovality of insert segment 1310 maintaining both positions. As long as the fixing is achieved before welding. In addition, the outer wall of the insertion section 1310 of the first adapter tube 131 is in clearance fit with the inner wall of the second bore section 1112 before welding, i.e. an annular receiving cavity 1110 is provided between the outer wall of the insertion section 1310 and the inner wall of the second bore section 1112. The reversing valve further includes a weld material 3, at least a portion of the annular receiving cavity 1110 having the weld material 3 therein. The welding material in this embodiment is formed by melting the weld ring by high-temperature heating such as brazing in a furnace, and then solidifying the weld ring by penetrating into the annular accommodating cavity 1110.
Since the working face (i.e., the upper surface) of the valve seat of the reversing valve is difficult to rework after welding, once the valve seat is deformed, there is a possibility of leakage inside the sliding seal pair formed by the upper surface of the valve seat and the slider member. Especially when the adapter tube and the valve seat are made of stainless steel with higher strength, the extrusion force of the adapter tube to the valve seat is larger, and the possibility of deformation of the valve seat is higher.
In the reversing valve provided in this embodiment, the first valve seat hole 111 includes a first hole section 1111 and a second hole section 1112, the first connecting tube 131 includes an insertion section 1310 located in the first valve seat hole 111, an outer wall of the insertion section 1310 is tightly matched and fixed with an inner wall of the first hole section 1111, and an outer wall of the insertion section 1310 is in clearance fit with an inner wall of the second hole section 1112. So set up, the cooperation length of first takeover 131 and disk seat 11 is short relative to the switching-over valve among the background art, and the cooperation section is in the disk seat 11 physically moreover, can reduce the extrusion force of first takeover 131 to both sides, especially can reduce extrusion bending moment to can reduce the risk of disk seat 11 atress deformation.
Further, when the first hole section 112 and the first connecting tube 131 are in an interference fit manner, the interference between the first hole section 112 and the first connecting tube 131 is set to be less than 0.2mm. That is, the value of the outer diameter of the first adapter tube 131 greater than the inner diameter of the first bore section 112 is less than 0.2mm. If the interference is too large, the difficulty in assembling the first adapter tube 131 and the valve seat 11 is increased, and the extrusion force of the first adapter tube 131 to two sides is increased after the assembly, so that the valve seat 11 is deformed.
As shown in fig. 2, 3a and 3b, the second hole section 1112 is a straight hole section, that is, the inner diameters of the second hole section 1112 are equal, the second hole section 1112 is in clearance fit with the insertion section 1310 of the first adapter tube 131, and the distance D1 between the inner wall of the second hole section 1112 and the outer wall of the insertion section 1310 is less than 0.15mm. If the distance is set too large, the welding material is not filled sufficiently, and the welding quality between the first adapter tube 131 and the valve seat 11 is affected.
Fig. 4 is an enlarged partial schematic view of a valve seat of another reversing valve according to the present invention.
As shown in FIG. 4, the second hole section 1112' is a variable diameter hole section, i.e., the second hole section 1112' has an inner diameter that increases in a direction away from the first hole section 1111, and a maximum distance between an inner wall of the second hole section 1112' and an outer wall of the insertion section 1310 is 0.05mm < D2 < 0.2mm. This has the advantage of enabling the welding material to fill the annular receiving cavity 1110 to the maximum, improving the quality of the welding of the first adapter 131 to the valve seat 11'.
Further, as shown in fig. 1, defining the length of the first hole section 1111 to be matched with the insertion section 1310 of the first adapter tube 131 as H, 1.5 < H < 2mm is satisfied. If the fitting length H is too long, the force receiving surface of the valve seat 11 is too large and is easily affected by the pressing force from the first adapter 131 to cause deformation; if the fitting length H is too short, the fixing reliability of the first adapter 131 before welding is affected.
In this embodiment, the valve seat 11, the valve body 12 and the connection tube 13 are made of stainless steel materials, the valve seat 11 is welded to the valve body 12, and the valve seat 11 is welded to the connection tube 13.
As shown in fig. 2, 3a, 3b, the first valve seat bore 111 further includes a valve port segment 1113, the valve port segment 1113 including a first valve port 1114, the first valve port 1114 communicating with the first nipple 131. The valve port segment 1113 is disposed at an upper end of the valve seat 11, i.e., an end proximate to the upper surface 114, and the second bore segment 1112 is disposed at a lower end of the valve seat 11, with the first bore segment 1111 being disposed between the valve port segment 1113 and the second bore segment 1112.
As shown in fig. 1 and 3a, the valve body part 1 further includes a second connection pipe 132 and a third connection pipe 133, the valve seat 11 further includes a second valve seat hole 112 and a third valve seat hole 113 disposed parallel to the first valve seat hole 111, and the second valve seat hole 112 and the third valve seat hole 113 have the same structure as the first valve seat hole 111, that is, the second valve seat hole 112 and the third valve seat hole 113 also have stepped hole sections, and the matching manner of the stepped hole sections and the connection pipes is the same. The second valve seat hole 112 is welded to the second adapter tube 132, and the third valve seat hole 113 is welded to the third adapter tube 133. The second valve port 1120 of the second valve seat bore 112 communicates with the second nipple 132, and the third valve port 1130 of the third valve seat bore 113 communicates with the third nipple 133. The slider member 2 is capable of clearance sliding engagement with the upper surface 114 of the valve seat 11, and as shown in FIG. 1, the second valve port 1120 is positioned between the first valve port 1114 and the third valve port 1130, and is switched between: the valve chamber 120 communicates with a first valve port 1114, and a second valve port 1120 communicates with a third valve port 1130; the valve chamber 120 communicates with a third valve port 1130 and the first valve port 1114 communicates with a second valve port 1120.
The following describes a method for manufacturing the reversing valve of the present embodiment, including the following steps:
Step A: preparing the valve body 12, the first adapter 131 and the slider part 2; preparing a valve seat 11, performing metal machining on a metal material (such as a custom profile) to form a blank of the valve body 12, and performing turning on the blank to form a first valve seat hole 111 comprising a first hole section 1111 and a second hole section 1112, wherein the inner diameter of the first hole section 1111 is smaller than that of the second hole section 1112;
And (B) step (B): placing welding material 3 into the first valve seat bore 111, inserting the insert section 1310 of the first adapter tube 131 into the first bore section 1111 for a tight fit to form a pre-welded assembly;
Step C: welding the pre-welding assembly, and melting the welding material 3 after heating and filling between the outer wall of the insert section 1310 and the inner wall of the first hole section 1111 and between the outer wall of the insert section 1310 and the inner wall of the second hole section 1112 to form a valve body part 1;
step D: the valve body part 1 and the sliding block part 2 are assembled to form the reversing valve.
Further, the step a further includes: the second connecting pipe 132 and the third connecting pipe 133 are prepared, the blank is machined to form a second valve seat hole 112 and a third valve seat hole 113 which are arranged in parallel with the first valve seat hole 111, and the second valve seat hole 112 and the third valve seat hole 113 have the same structure as the first valve seat hole 111.
Further, the valve seat 11, the valve body 12, the first connecting tube 131, the second connecting tube 132, and the third connecting tube 133 are all made of stainless steel materials, and the step B further includes: inserting the second adapter tube 132 into the second valve seat hole 112 for tight fitting, and inserting the third adapter tube 133 into the third valve seat hole 113 for tight fitting, thereby forming the pre-welded assembly; the pre-welded assembly is placed in a furnace welding device and welded at one time to form the valve body part 1.
The reversing valve and the method for manufacturing the same of the present embodiment are described in detail above, so that those skilled in the art can make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The reversing valve comprises a valve body part and a sliding block part, wherein the valve body part comprises a valve seat, a valve body and a first connecting pipe, the valve seat is fixedly connected with the first connecting pipe, the reversing valve is characterized in that the valve seat comprises a first valve seat hole, the first valve seat hole comprises a first hole section and a second hole section, the inner diameter of the first hole section is smaller than that of the second hole section, the first connecting pipe comprises an insertion section positioned in the first valve seat hole, and the insertion section of the first connecting pipe is in tight fit with the first hole section;
A welding material is arranged between the outer wall of the insertion section and the inner wall of the first hole section, an annular accommodating cavity is arranged between the outer wall of the insertion section and the inner wall of the second hole section, and at least part of the annular accommodating cavity is provided with the welding material;
The first valve seat hole further comprises a valve port section, the valve port section comprises a first valve port, the valve port section is arranged at the upper end of the valve seat, the second hole Duan Sheyu is arranged at the lower end of the valve seat, and the first hole section is arranged between the valve port section and the second hole section.
2. The reversing valve of claim 1, wherein the second bore section has an inner diameter equal to a distance D1 < 0.15mm between an inner wall of the second bore section and an outer wall of the insert section.
3. The reversing valve of claim 1, wherein the second bore section has an inner diameter that increases in a direction away from the first bore section, a maximum distance between an inner wall of the second bore section and an outer wall of the insert section being 0.05mm < D2 < 0.2mm.
4. A reversing valve according to claim 1, wherein a length H defining said first bore section for cooperation with said insert section is 1.5mm < H < 2mm.
5. The reversing valve of claim 1, wherein the valve body member further comprises a second nipple, a third nipple, the valve seat further comprises a second valve seat bore and a third valve seat bore disposed in parallel with the first valve seat bore, the second valve seat bore, the third valve seat bore being identical in structure to the first valve seat bore, the second valve seat bore being fixedly connected to the second nipple, the third valve seat bore being fixedly connected to the third nipple, the second valve seat bore comprising a second valve port, the third valve seat bore comprising a third valve port, the second valve port being located between the first valve port and the third valve port, the slider member being slidably engageable with the valve seat to switch between: the valve cavity of the reversing valve is communicated with the first valve port, and the second valve port is communicated with the third valve port; the valve cavity is communicated with the third valve port, and the first valve port is communicated with the second valve port.
6. A reversing valve according to any one of claims 1 to 5, wherein the valve seat, the valve body and the first adapter tube are all made of stainless steel material, the valve seat is welded to the valve body, and the valve seat is welded to the first adapter tube.
7. A method for manufacturing a reversing valve according to any one of claims 1 to 6, comprising the steps of:
Step A: preparing a valve body, a first connecting pipe and a sliding block component; preparing a valve seat, namely, metalworking a metal material into a blank of the valve seat, and turning the blank of the valve seat into a first valve seat hole comprising a first hole section and a second hole section, wherein the inner diameter of the first hole section is smaller than that of the second hole section;
and (B) step (B): placing welding materials into the first valve seat hole, and inserting the insertion section of the first connecting pipe into the first hole section for tight fit to form a pre-welding assembly;
step C: welding the pre-welding assembly, wherein the welding material is melted after being heated, and fills the space between the outer wall of the insertion section and the inner wall of the first hole section and the space between the outer wall of the insertion section and the inner wall of the second hole section to form a valve body part;
step D: and assembling the valve body part and the sliding block part to form the reversing valve.
8. The method of manufacturing a reversing valve according to claim 7, wherein step a further includes: preparing a second connecting pipe and a third connecting pipe, and turning the blank into a second valve seat hole and a third valve seat hole which are arranged in parallel with the first valve seat hole, wherein the second valve seat hole, the third valve seat hole and the first valve seat hole have the same structure.
9. The method of manufacturing a reversing valve according to claim 8, wherein the valve seat, the valve body, and the first, second, and third connecting pipes are made of stainless steel materials, and the step B further includes: inserting the second connecting pipe into the second valve seat hole for tight fit, and inserting the third connecting pipe into the third valve seat hole for tight fit to form the pre-welding assembly; and placing the pre-welding assembly into a furnace welding device for one-time welding to manufacture the valve body part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293533.6A CN111810480B (en) | 2019-04-12 | 2019-04-12 | Reversing valve and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293533.6A CN111810480B (en) | 2019-04-12 | 2019-04-12 | Reversing valve and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111810480A CN111810480A (en) | 2020-10-23 |
| CN111810480B true CN111810480B (en) | 2024-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910293533.6A Active CN111810480B (en) | 2019-04-12 | 2019-04-12 | Reversing valve and manufacturing method thereof |
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| CN (1) | CN111810480B (en) |
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| CN104565440A (en) * | 2013-10-10 | 2015-04-29 | 日立空调·家用电器株式会社 | Refrigerant switching valve and equipment comprising same |
| CN107035909A (en) * | 2016-02-03 | 2017-08-11 | 浙江三花制冷集团有限公司 | A kind of magnetic valve |
| CN106956053A (en) * | 2017-03-06 | 2017-07-18 | 东莞市迈纳斯航空技术有限公司 | A vacuum brazing method for titanium alloy pipelines |
| CN108571604A (en) * | 2017-03-10 | 2018-09-25 | 浙江三花制冷集团有限公司 | A kind of one-way control valve and its manufacturing method |
| CN108953675A (en) * | 2017-05-18 | 2018-12-07 | 浙江三花制冷集团有限公司 | A kind of reversal valve and its manufacturing method |
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| CN111810480A (en) | 2020-10-23 |
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Effective date of registration: 20220819 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Applicant after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 R & D building of Zhejiang Sanhua refrigeration group, xialiquan village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Applicant before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
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