CN202327321U - Two-channel pneumatic control valve - Google Patents
Two-channel pneumatic control valve Download PDFInfo
- Publication number
- CN202327321U CN202327321U CN2011205017087U CN201120501708U CN202327321U CN 202327321 U CN202327321 U CN 202327321U CN 2011205017087 U CN2011205017087 U CN 2011205017087U CN 201120501708 U CN201120501708 U CN 201120501708U CN 202327321 U CN202327321 U CN 202327321U
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- valve
- valve body
- needle
- upper valve
- pneumatic control
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Abstract
The utility model relates to a two-channel pneumatic control valve. The structure of the two-channel pneumatic control valve is as follows: a lower valve body and the left end of an upper valve body form a pressure sensing containing cavity, and the pressure sensing containing cavity and a corrugated pipe assembly in the pressure sensing containing cavity form a pressure sensing part; a needle valve is arranged in the middle of the upper valve body and forms a pressure transmission part together with an upper valve body spring, and the needle valve and the left end of the inner hole of the upper valve body form a left valve; and the right end of the upper valve body is in interference connection with a valve base, and the valve base and a steel ball form a right valve. The two-channel pneumatic control valve provided by the utility model has the advantages that (1) positions at which the needle valve and the valve body are respectively contacted with the upper valve body spring are designed into flat surfaces, thereby preventing the upper valve body spring from distorting so as to push the needle valve to one side of the upper valve body to cause the increase of the friction force of the needle valve and the upper valve body; and (2), the thimble end of the corrugated pipe assembly is designed into a semisphere, the end of the needle valve is designed into the thimble matching of a counterbore and the corrugated pipe assembly, thereby preventing the phenomenon that the large deviation of the end part of the thimble and the center line of the corrugated pipe is generated in the corrugated pipe assembly so as to push the needle valve to one side of the upper valve body to cause the increase of the friction force of the needle valve and the upper valve body.
Description
Technical field
The utility model relates to a kind of Twin channel pneumatic control valve, particularly a kind of upper valve body and upper valve body spring contacting point shaped design are the Twin channel pneumatic control valve on plane.Belong to car air conditioner variable compressor attachment technique field.
Background technique
Recently, automobile because of its traffic convenience, riding comfortable, control characteristics such as simple, liked by masses, along with the people's lives improvement of terms, material conditions are abundant gradually, automobile just progressively gets into huge numbers of families.Under the prerequisite that ride safety of automobile property progressively improves, riding travelling comfort is also paid close attention to by the operator gradually.In the riding travelling comfort of automobile, comprise automobile riding jolt little, seat comfort, environment inside car travelling comfort etc.At present, most automobile has been installed car air conditioner and has been adjusted environment inside car, and wherein the part car air conditioner uses variable compressor, and the use of Twin channel pneumatic control valve also has very big ratio in variable compressor.
Above-mentioned Twin channel pneumatic control valve working principle in automotive air-conditioning system is following, in automotive air-conditioning system, when the air aspiration cavity Ps of compressor pressure surpasses Twin channel pneumatic control valve setting value; Pressure of inspiration(Pi) increases the bellows component compressive force; Bellows component shrinks and shortens, and needle-valve resets, and steel ball is under seating spring and compressor discharge chamber pressure P d acting in conjunction; Be pressed towards valve seat, cause exhaust cavity gas flow compressor rocker chamber passage to diminish and then close.Meanwhile, open to the air aspiration cavity passage from the rocker chamber, portion gas flows to air aspiration cavity through the rocker chamber, has reduced the pressure of rocker chamber Pc, and rocker is moved to the position that increases discharge capacity, finally reduces the temperature in the car.Otherwise when compressor air suction chamber Ps pressure reduces less than Twin channel pneumatic control valve setting value, bellows component power by compression reduces; Automatically elongation; Through needle-valve steel ball is pushed away valve seat, the compressor discharge chamber pressurized gas flow to compressor rocker chamber through valve seat, upper valve body aperture, and then cause compressor rocker cavity pressure to rise; Rocker moves to the position that reduces discharge capacity, finally reaches the effect of stablizing vehicle interior temperature.
At the Twin channel pneumatic control valve in automotive air-conditioning system during real work; Because the manufacturing conformity of part is relatively poor; And automobile is in travelling state sometimes; Always have the situation generation that vibration is jolted, the design of existing Twin channel pneumatic control valve part shape and part matching relationship each other very easily cause phenomenons such as interfering appears in part each other, friction, the resistance that stagnates.Such as: 1, when bending, perpendicularity variation appear in the upper valve body spring; Because upper valve body endoporus and needle-valve end face all have the conical surface, after upper valve body spring and upper valve body and needle-valve assembling, crooked upper valve body spring is easily with the side application of force of needle-valve to the upper valve body spring bending; So just caused needle-valve and upper valve body friction to occur, occurred interfering each other, needle-valve moves in the upper valve body endoporus and the resistance that stagnates occurs; And then cause the compressor adjustment slowly, influence the environment inside car travelling comfort.Seriously also can cause this Twin channel control valve performance failure.2, when appearring in bellows component, thimble end and bellows core line depart from when big, and bellows component is under the effect of air aspiration cavity pressure; Depart from the bellows component center line and extend, just promote needle-valve, rather than move along the little centerline hole of upper valve body to upper valve body one side shifting to a side; Frictional force between needle-valve and the upper valve body increases, and occurs interfering each other, and needle-valve moves in the upper valve body endoporus and the resistance that stagnates occurs; And then cause the compressor adjustment slowly, influence the environment inside car travelling comfort.Seriously also can cause this Twin channel control valve performance failure.
Summary of the invention
It is more reasonable that the purpose of the utility model is to propose a kind of design, moves more stable Twin channel pneumatic control valve, to overcome deficiency of the prior art.
The technical solution of the utility model: its structure comprises pressure-sensitive part, propagation of pressure part and the left valve of valve, right valve; Wherein: the left end of following valve body and upper valve body is combined into a pressure-sensitive cavity volume, with the bellows component formation pressure-sensitive part in the pressure-sensitive cavity volume; Needle-valve is installed in the middle part of upper valve body with upper valve body spring decomposition pressure transmitting portions, and the endoporus left end of needle-valve and upper valve body forms left valve; The right-hand member of upper valve body and valve seat interference fit joint, valve seat and steel ball form right valve.
The advantage of the utility model: 1) needle-valve and upper valve body are designed to the plane with upper valve body spring position contacting respectively, are distorted and push needle-valve to upper valve body one side, cause needle-valve and upper valve body frictional force to increase to prevent the upper valve body spring.2) the thimble end with bellows component is designed to hemisphere; And needle valve end is designed to counterbore cooperates with the thimble of bellows component; Because thimble end and bellows core line appear in line pipe assembly departs from big and needle-valve is pushed upper valve body one side to, cause the increase of needle-valve and upper valve body frictional force to prevent.
Description of drawings
Accompanying drawing 1 is the Twin channel pneumatic control valve structural representation that needle-valve and upper valve body and upper valve body spring contacting point are respectively the plane.
Among the figure 1 is bellows component, the 2nd, following valve body, the 3rd, upper valve body, the 4th, needle-valve, the 5th, upper valve body spring, the 6th, valve seat, the 7th, steel ball, the 8th, seating spring, the 9th, O type circle A, the 10th, O type circle B, the 11st, O type circle C, the 12nd, O type circle D.
Embodiment
Contrast accompanying drawing 1, its structure comprise pressure-sensitive part, propagation of pressure part and the left valve of valve, right valve, and wherein: following valve body 2 is combined into a pressure-sensitive cavity volume with the left end of upper valve body 3, with the bellows component 1 formation pressure-sensitive part in the pressure-sensitive cavity volume; Needle-valve 4 is installed in the middle part of upper valve body 3 with upper valve body spring 5 decomposition pressure transmitting portions, and needle-valve 4 forms left valve with the endoporus left end of upper valve body 3; The right-hand member of upper valve body 3 and valve seat 6 interference fit joint, valve seat 6 forms right valve with steel ball 7.
Bellows component 1 is placed in the cavity of the following valve body 2 in the pressure-sensitive cavity volume; Following valve body cylindrical has two apertures; The pressure of air aspiration cavity can conduct to down the inside of valve body 2; Bellows component 1 left end is fixed in the down interior edge face of valve body 2, and because of the variation of compressor air suction cavity pressure elongates or shortens, bellows component 1 thimble just promotes needle-valve 4 left and right moving.Bellows component 1 thimble end is set to hemisphere, and needle-valve 4 contacting points that cooperate with it are set to counterbore.
Described left valve comprises upper valve body 3, needle-valve 4, upper valve body spring 5; Left side valve control compressor rocker chamber flows to the gas flow of air aspiration cavity; Needle-valve 4 is installed in the middle part of upper valve body 3, and upper valve body spring 5 is enclosed within on the needle-valve 4, and its right-hand member withstands the endoporus bottom surface of upper valve body 3.Needle-valve 4 is set to the plane with needle-valve 4 contacting points, and also is set to the plane to upper valve body 3 and upper valve body spring 5 contacting points.The effect of upper valve body spring 5 is to let needle-valve 4 reset, and needle-valve 4 is because the elongating or shortening of bellows component 1, and does left and right displacement at the endoporus of upper valve body 3, and power is delivered to right-hand member.
Described right valve mechanism comprises valve seat 6, steel ball 7, seating spring 8; The right-hand member of upper valve body 3 and valve seat 6 interference fit joint are equipped with steel ball 7, seating spring 8 in the valve seat 6, steel ball 7 and the inner headed face of valve seat 6 and the valve port of a valve of through hole formation; The left end of steel ball 7 contacts with the right-hand member of needle-valve 4; Steel ball 7 right-hand members have seating spring 8 to support, and push steel ball 7, valve opening open when bellows component 1 elongation promotes needle-valve 4 displacement to the right; When bellows component 1 contraction, upper valve body spring 5 resets needle-valve 4 left, and seating spring 8 promotes steel ball 7 left, throttle down.
On upper valve body 3, the following valve body 2 O type circle A, O type circle B, O type circle C, O type circle D are installed respectively.
Working procedure
When compressor air suction chamber gas pressure increases; Bellows component 1 can shorten because of the effect of gas pressure; Needle-valve 4 under the effect of upper valve body spring 5 to left dislocation; Needle-valve 4 increases with the aperture that upper valve body 3 endoporus constitute left valve port, is increased by the throughput of rocker chamber to air aspiration cavity, has reduced the pressure in rocker chamber.Cause the compressor rocker to move to the position that increases discharge capacity, air-conditioning system is moved fast, has finally reduced the temperature in the car.
Gas pressure reduces when the compressor air suction chamber; Bellows component 1 can extend because of the effect of gas pressure; Promotion needle-valve 4 moves right and then promotes the aperture that steel ball 7 is regulated right valve port, and the gas of compressor discharge chamber gets into the rocker chamber of compressor again through the entering valve seat of upper valve body 3 right-hand members through the steel ball 7 and the right valve port of valve seat 6 formation; Thereby improved the pressure in compressor rocker chamber; Cause the compressor rocker to move to the position that reduces discharge capacity, air-conditioning system is slowly moved, and has finally stablized the temperature in the car.
Claims (6)
1. Twin channel pneumatic control valve, its structure comprise pressure-sensitive part, propagation of pressure part and the left valve of valve, right valve, and wherein: the left end of following valve body and upper valve body is combined into a pressure-sensitive cavity volume, with the bellows component formation pressure-sensitive part in the pressure-sensitive cavity volume; Needle-valve is installed in the middle part of upper valve body with upper valve body spring decomposition pressure transmitting portions, and the endoporus left end of needle-valve and upper valve body forms left valve; The right-hand member of upper valve body and valve seat interference fit joint, valve seat and steel ball form right valve.
2. Twin channel pneumatic control valve according to claim 1 is characterized in that upper valve body and upper valve body spring contacting point shaped design are the plane, and this plane is in the upper valve body endoporus and supports upper valve body spring place; Upper valve body and needle-valve contacting point shaped design are the plane, and this plane is in upper valve body and needle-valve sealing part, and needle-valve and upper valve body spring contacting point shaped design are the plane, and this plane is in needle-valve and upper valve body spring contacting point; Needle-valve and bellows component contacting point shaped design are counterbore, and this counterbore is positioned at needle-valve and bellows component contacting point.
3. Twin channel pneumatic control valve according to claim 1; It is characterized in that bellows component is placed in the cavity of the following valve body in the pressure-sensitive cavity volume; Following valve body cylindrical has two apertures, and the bellows component left end is fixed in the interior edge face of valve body down, and bellows component thimble end is set to hemisphere.
4. Twin channel pneumatic control valve according to claim 1 is characterized in that the upper valve body spring in the described left valve is to be enclosed within on the needle-valve, and the right-hand member of upper valve body spring withstands the endoporus bottom surface of upper valve body.
5. Twin channel pneumatic control valve according to claim 1; The right-hand member and the valve seat interference fit joint that it is characterized in that the upper valve body in the described right valve; Steel ball, seating spring are housed in the valve seat; The inner headed face of steel ball and valve seat and through hole form the valve port of a valve, and the left end of steel ball contacts with the right-hand member of needle-valve, and the steel ball right-hand member has seating spring to support.
6. Twin channel pneumatic control valve according to claim 1 is characterized in that upper valve body, on the valve body O type circle A, O type circle B, O type circle C, O type circle D is installed respectively down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205017087U CN202327321U (en) | 2011-12-06 | 2011-12-06 | Two-channel pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205017087U CN202327321U (en) | 2011-12-06 | 2011-12-06 | Two-channel pneumatic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327321U true CN202327321U (en) | 2012-07-11 |
Family
ID=46439300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205017087U Expired - Lifetime CN202327321U (en) | 2011-12-06 | 2011-12-06 | Two-channel pneumatic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202327321U (en) |
-
2011
- 2011-12-06 CN CN2011205017087U patent/CN202327321U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |