CN102425675A - Automotive air-conditioning refrigerating cone sealing valve core - Google Patents
Automotive air-conditioning refrigerating cone sealing valve core Download PDFInfo
- Publication number
- CN102425675A CN102425675A CN2011103864191A CN201110386419A CN102425675A CN 102425675 A CN102425675 A CN 102425675A CN 2011103864191 A CN2011103864191 A CN 2011103864191A CN 201110386419 A CN201110386419 A CN 201110386419A CN 102425675 A CN102425675 A CN 102425675A
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- Prior art keywords
- seat
- valve
- valve core
- valve cover
- seal
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Abstract
The invention discloses an automotive air-conditioning refrigerating cone sealing valve core, which comprises a valve core rod, a restoring spring, a valve cover seat, a pipe wall sealing ring and a valve core sealing seat; the center of the valve cover seat is provided with a guiding hole and an air inlet cavity; the valve core is sleeved in the guiding holes of the restoring spring and the valve cover seat; the valve core rod is screwed in a core rod screw hole of the valve core seat through a thread connecting section at the lower end of the valve core rod; the lower end face of the valve cover seat is a conical sealing face; and an O-shaped sealing ring is arranged between the upper end face of the axial step of the valve core seat and the conical sealing face of the valve cover seat. The sealing face of the valve cover seat is changed into the conical sealing face, the O-shaped sealing ring is arranged between the upper end face of the axial step of the valve core seat and the conical sealing face of the valve cover seat, and the O-shaped sealing ring can be automatically in contact with the conical sealing faces of the valve core seat and the valve cover seat under the action of the restoring spring, so that the sealing requirement can be met and the coaxiality of the valve core rod and the valve cover seat can be ensured.
Description
Technical field
The present invention relates to refrigerated air-conditioning system, relate in particular to automobile refrigerating air-conditioning gas circuit spool.
Background technique
In the automobile refrigerating air-conditioning, all gas path control valve must be arranged, otherwise just can't just can't proper functioning to car air conditioner.Existing automobile refrigerating air-conditioning spool is for being mostly shape metallic leak-proof structure, and is as shown in Figure 1, and it comprises valve core rod 1, Returnning spring 2, valve cover seat 3, tube wall seal ring 4 and seal spool seat 5; On the cylindrical of valve cover seat 3, be provided with outside thread, guiding cylindrical and seal groove; The lower end surface of valve cover seat 3 is a sealing surface, is provided with pilot hole and the air-inlet cavity that matches with valve core rod 1 at the center of valve cover seat 3, and outside thread matches with the internal thread of control valve seat 7; Upper end at valve core rod 1 is provided with limited step; Hypomere is provided with the section of being threaded, and valve core rod 1 is sleeved in the pilot hole of Returnning spring 2 and valve cover seat 3, on seal spool seat 5, is provided with axial step and coupling shaft; Axial step and coupling shaft coaxial line; Be provided with the core bar screw at the center of coupling shaft, valve core rod 1 is rotated with in the core bar screw of seal spool seat 5 through the outside thread of its lower end, between the lower end surface of the upper-end surface of the axial step of seal spool seat 5 and valve cover seat 3, forms sealing configuration.
The sealability of the automobile air-conditioning refrigeration spool of this structure not only depends on the machining accuracy of part; And depend on assembly precision; The sealing reliability of spool is bad with stability; If assembly precision does not reach requirement, valve core rod 1 and the axis of the combination of seal spool seat 5 and the lower end surface out of plumb of valve cover seat 3 will leak gas.
Summary of the invention
The purpose of this invention is to provide a kind of automobile air-conditioning refrigeration conical surface seal spool.
The technological scheme that the present invention takes is:
A kind of automobile air-conditioning refrigeration conical surface seal spool comprises valve core rod, Returnning spring, valve cover seat, tube wall seal ring and seal spool seat, on the cylindrical of valve cover seat, is provided with outside thread, guiding cylindrical and seal groove; The lower end surface of valve cover seat is a conical seal (contact) face; Be provided with pilot hole and the air-inlet cavity that matches with valve core rod at the center of valve cover seat, outside thread matches with the internal thread of control valve seat, is provided with limited step in the upper end of valve core rod; Hypomere is provided with the section of being threaded; Valve core rod is sleeved in the pilot hole of endoporus and valve cover seat of Returnning spring, on the seal spool seat, is provided with axial step and coupling shaft, axial step and coupling shaft coaxial line; Be provided with the core bar screw at the center of coupling shaft; Valve core rod is rotated with in the core bar screw of seal spool seat through the section of being threaded of its lower end, it is characterized in that: the lower end surface of said valve cover seat is a conical seal (contact) face, between the conical seal (contact) face of the upper-end surface of the axial step of seal spool seat and valve cover seat, is provided with O-ring seals.
Further, on the coupling shaft of seal spool seat, be provided with notch, O-ring seals is installed in the notch.
Owing to change the lower end surface of valve cover seat into conical seal (contact) face, between the conical seal (contact) face of the upper-end surface of the axial step of seal spool seat and valve cover seat, be provided with O-ring seals.Like this, under the effect of Returnning spring, O-ring seals just can contact with the conical seal (contact) face of seal spool seat with the valve cover seat automatically, can satisfy seal request, can guarantee that again valve core rod is coaxial with the valve cover seat, thereby improve its reliability and stability.
Description of drawings
Fig. 1 is the prior art constructions schematic representation;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the structural representation of valve cover seat;
Fig. 4 is the structural representation of seal spool seat;
Among the figure: the 1-valve core rod; The 2-Returnning spring; 3-valve cover seat; 4-tube wall seal ring; 5-seal spool seat; 6-O shape seal ring; The 7-control valve seat; The 31-outside thread; The 32-cylindrical that leads; The 33-seal groove; The 34-conical seal (contact) face; The 35-pilot hole; The 36-air-inlet cavity; The 51-axial step; The 52-coupling shaft; 53-core bar screw; The 54-notch.
Embodiment
Illustrate embodiment of the present invention below:
A kind of automobile air-conditioning refrigeration conical surface seal spool; Like Fig. 2, Fig. 3 and shown in Figure 4, comprise valve core rod 1, Returnning spring 2, valve cover seat 3, tube wall seal ring 4, seal spool seat 5 and O-ring seals 6, on the cylindrical of valve cover seat 3, be provided with outside thread 31, guiding cylindrical 32 and seal groove 33; Be provided with conical seal (contact) face 34 in the lower end of valve cover seat 3; Be provided with pilot hole 35 and air-inlet cavity 36 at the center of valve cover seat 3, outside thread 31 matches with the internal thread of control valve seat 7, is provided with limited step in the upper end of valve core rod 1; Hypomere is provided with the section of being threaded; Valve core rod 1 is sleeved in the pilot hole 35 of Returnning spring 2 and valve cover seat 3, on seal spool seat 5, is provided with axial step 51 and coupling shaft 52, axial step 51 and coupling shaft 52 coaxial lines; Be provided with core bar screw 53 at the center of coupling shaft 52; Valve core rod 1 is rotated with in the core bar screw 53 of seal spool seat 5 through the section of being threaded of its lower end, and the lower end surface of said valve cover seat 3 is a conical seal (contact) face 34, between the conical seal (contact) face 34 of the upper-end surface of the axial step 51 of seal spool seat 5 and valve cover seat 3, is provided with O-ring seals 6; On the coupling shaft 52 of seal spool seat 5, be provided with notch 54, O-ring seals 6 is installed in the notch 54.
Claims (2)
1. automobile air-conditioning refrigeration conical surface seal spool; Comprise valve core rod (1), Returnning spring (2), valve cover seat (3), tube wall seal ring (4) and seal spool seat (5); On the cylindrical of valve cover seat (3), be provided with outside thread (31), guiding cylindrical (32) and seal groove (33); The lower end surface of valve cover seat (3) is conical seal (contact) face (34); Be provided with pilot hole (35) and the air-inlet cavity (36) that matches with valve core rod (1) at the center of valve cover seat (3), outside thread (31) matches with the internal thread of control valve seat (7), is provided with limited step in the upper end of valve core rod (1); Hypomere is provided with the section of being threaded; Valve core rod (1) is sleeved in the pilot hole (35) of endoporus and valve cover seat (3) of Returnning spring (2), on seal spool seat (5), is provided with axial step (51) and coupling shaft (52), axial step (51) and coupling shaft (52) coaxial line; Be provided with core bar screw (53) at the center of coupling shaft (52); Valve core rod (1) is rotated with in the core bar screw (53) of seal spool seat (5) through the section of being threaded of its lower end, it is characterized in that: the lower end surface of said valve cover seat (3) is conical seal (contact) face (34), between the conical seal (contact) face (34) of the upper-end surface of the axial step (51) of seal spool seat (5) and valve cover seat (3), is provided with O-ring seals (6).
2. according to the said automobile air-conditioning refrigeration conical surface seal of claim 1 spool, it is characterized in that: on the coupling shaft (52) of seal spool seat (5), be provided with notch (54), O-ring seals (6) is installed in the notch (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103864191A CN102425675A (en) | 2011-11-29 | 2011-11-29 | Automotive air-conditioning refrigerating cone sealing valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103864191A CN102425675A (en) | 2011-11-29 | 2011-11-29 | Automotive air-conditioning refrigerating cone sealing valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102425675A true CN102425675A (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103864191A Pending CN102425675A (en) | 2011-11-29 | 2011-11-29 | Automotive air-conditioning refrigerating cone sealing valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102425675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016748A (en) * | 2012-11-30 | 2013-04-03 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double-seal type lift valve for piston volume tube |
-
2011
- 2011-11-29 CN CN2011103864191A patent/CN102425675A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016748A (en) * | 2012-11-30 | 2013-04-03 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double-seal type lift valve for piston volume tube |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120425 |