CN201723776U - Semi-enclosed electric linear motion type 4-way reversing valve - Google Patents
Semi-enclosed electric linear motion type 4-way reversing valve Download PDFInfo
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- CN201723776U CN201723776U CN2010202142752U CN201020214275U CN201723776U CN 201723776 U CN201723776 U CN 201723776U CN 2010202142752 U CN2010202142752 U CN 2010202142752U CN 201020214275 U CN201020214275 U CN 201020214275U CN 201723776 U CN201723776 U CN 201723776U
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Abstract
The utility model discloses a semi-enclosed electric linear motion type reversing valve, which is characterized in that a valve core is arranged in a valve body, the valve body is provided with four connection pipe mouths connected with a refrigerating system pipe, the left side of the valve core is provided with a pin hole, a piston pin of the valve core is arranged in the pin hole, and both ends thereof are fixed by a locking nut and a locking snap spring; the piston pin of the valve core is sleeved in a connecting hole of a link mechanism, and both sides thereof are clamped by the locking snap spring; and the other end of the link mechanism is sleeved in a motor shaft, a link lantern ring and the motor shaft are clamped together via a motor shaft key, and the tail end of the motor shaft is fixed by a locknut. The utility model is in a semi-enclosed motor-driven structure, can effectively avoid refrigerant leakage, does not need motive seal design for preventing leakage such as open type shaft seal and the like, does not need to adopt gas differential pressure to achieve reversing, does not need a pilot valve and a pressure line, does not need to reverse after reaching the reversing differential pressure, effectively simplifies a 4-way valve and the structure, reduces leakage points, and simplifies the control of a central air conditioning heat pump host.
Description
Technical field:
The utility model relates to a kind of valve that is applicable to refrigeration and air-conditioning equipment, relates in particular to a kind of semi-enclosed electric rectilinear movement type four-way change-over valve.
Background technique:
The jumbo four-way change-over valve of Shi Yonging mainly is divided into two kinds in the market: the four-way change-over valve of staggered form runner piston cylinder operator four-way change-over valve, the design of inner slide block type U type runner, these two kinds of four-way change-over valves all are straight line motions of realizing spool by the height pressure reduction of refrigeration system inside, reach refrigeration and heat the purpose that circulation is switched.
The four-way change-over valve of first kind of staggered form runner piston type design, its main structure is made up of main valve, pilot valve and signal tube, piston adopts high-intensity antifriction metal (AFM) manufacturing, valve chest is by the seamless steel pipe manufacturing, piston and enclosure interior surface need to make that through technologies such as high-precision turning, correct grinding, honing and cooperation mills piston can be in the free unobstructed slip of enclosure interior, gap between piston and the inwall can not be too small can not be excessive, required precision is very high, and excesssive gap then causes leakage quantity increase in the high and low pressure side; The gap is too small, the slight deformation in the welding process then, the intrusion of impurity promptly causes faults such as piston increases at the valve inner moving resistance, commutation is malfunctioning, four-way valve is stuck, in order to reduce the interior leakage of high and low pressure side refrigeration agent, the requirement on machining accuracy of piston type four-way change-over valve is very high, also need to grind out the oily passage of intersection simultaneously, sealing effect in reaching more effectively by oil seal, the characteristics of this class four-way valve are: 1. integral body all is to be formed by the steel manufacturing, volume and weight is all very big, and the assembling in unit is inconvenient relatively; 2. the cooperation requirement on machining accuracy height between the valve inner moving element requires than higher the turbidity test of thermal distortion in the welding process and system; In a single day 3. the situation of seizure of piston occurs, the piston return need be taken time and effort, need dismounting four-way valve both sides end cap, make the four-way valve return by mechanical forces; 4. owing to adopt the cross-channel design, the flowpath pressure loss is very little, and is very little to the influence of systematic function, its pressure loss even only be equivalent to the flowing pressure loss of fluid in elbow of pipeline.
Second kind is the four-way change-over valve of inner slide block type U type runner design, its main structure is by main valve, pilot valve and signal tube are formed, housing adopts brass bar or brass tube to process, the move left and right of the slide block of the teflon by a U type structure, U type mouth is connected with the mouth of pipe of different refrigeration system respectively in moving process, realize commutation function, outlet pipe and condenser are connected under the refrigeration mode, sucking pipe and vaporizer are connected, outlet pipe and vaporizer are connected under the heating mode, sucking pipe and condenser are connected, the slide block both sides of U type runner are connected with the mobile end cap of both sides by connecting rod, mobile end cap moves in enclosure interior, and it is that brass ingot manufacturing by teflon-coated forms, and opens oil in the bottom of end cap and reveals aperture, realize the move left and right of U type runner slide block by the pressure difference on the end cap, the characteristics of this class four-way valve are: 1. integral body is by brass and teflon manufacturing, and volume and weight is all little a lot of than first kind of four-way change-over valve, and is easy for installation in unit; 2. motive sealing all is to adopt brass and teflon to seal, and teflon itself has good selflubricating mechanism, and therefore the drag losses in runner slide block moving process is less, stuck situation seldom occurs; 3. the requirement on machining accuracy between the valve inner moving element is not so good as first kind of four-way change-over valve height, does not need so much grinding process that arrives, processing cost can effectively reduce; 4. little owing to material weight, compact structure, in case it is stuck the four-way valve spool to occur, the method by raising commutation pressure reduction is forced in the low voltage side venting can make the four-way valve return effectively, processing procedure is simpler; 5. universal component design for jumbo four-way change-over valve, needs a plurality of four-way change-over valve parallel connections, therefore nonsynchronous situation that commutates can occur; 6. owing to adopt the design of U type runner, there is bigger local pressure loss in runner, and the performance loss that causes is also bigger.
The structure of two kinds of four-way change-over valves all is to rely on internal differential pressure to promote the action of spool, the design of mechanical structure is comparatively simple, but following shortcoming is arranged also: 1. because the spool weight and volume is all big, need very big Driving force, in case it is ineffective to produce commutation, spool is stuck in the middle of the valve body, then keep in repair and the very difficulty that resets all, if the spool action is asynchronous, also can cause high low pressure gas to gang up, promptly if the ineffective situation that commutates, the gas pressure that promotes valve core movement will not exist, and four-way change-over valve can't proper functioning; 2. must design guarantee enough commutation pressure reduction, just might guarantee the four-way valve regular event, when heating operation, must first running refrigerating circulation, make height pressure reduction reach commutation pressure after, just move and heat circulation; 3. the straight line of spool moves the surface friction drag that need overcome between spool and the valve seat, and common design is the valve core material that adopts exhaust band oil lubrication or adopt selflubricating.
The model utility content:
The utility model provides a kind of semi-enclosed electric rectilinear movement type four-way change-over valve at the deficiencies in the prior art.
For realizing above purpose, the technical solution adopted in the utility model is:
A kind of semi-enclosed electric rectilinear movement type four-way change-over valve, the water side evaporator outlet interface tube when the outer pipe interface of the air-cooled vaporizer when the air-cooled condenser inlet tube interface during by end cover, spool, linkage mechanism, valve body, actuating motor, valve core piston pin, compressor air-discharging interface tube, refrigeration mode, heating mode, refrigeration mode, inlet tube interface, compressor air suction interface tube, locking nut, locking jump ring, motor axle key, the electric machine support of the water side condenser under the heating mode are formed; End cover is installed at two ends, the valve body left and right sides, valve inner is equipped with spool, valve body is provided with four connection mouths of pipe that are connected with the refrigeration system pipe, four uniform being welded on the valve body of connecting tube, the water side evaporator outlet interface tube when the outer pipe interface of the air-cooled vaporizer when the air-cooled condenser inlet tube interface when being compressor air-discharging interface tube, refrigeration mode respectively, heating mode, refrigeration mode, inlet tube interface, the compressor air suction interface tube of the water side condenser under the heating mode; The left side of spool is provided with pin-and-hole, and the valve core piston pin is installed in the pin-and-hole, and two ends are fixed with locking nut and locking jump ring, and the valve core piston pin is fixed on the spool, prevent that it from skidding off the valve core piston pin-and-hole; The valve core piston guide is contained in the attachment hole of linkage mechanism, and both sides prevent that with locking jump ring chucking linkage mechanism from sliding on the valve core piston pin; The other end of linkage mechanism is inserted in the motor shaft, by the motor axle key connecting rod collar and motor shaft is snapped together, and the terminal lock nut that adopts of motor shaft is fixed.
Described motor shaft, linkage mechanism, wrist pin guarantee at grade when mounted.
The effect of described valve core piston pin is that spool, linkage mechanism and actuating motor are linked together.
Described valve body, spool, linkage mechanism, actuating motor constitute enclosed valve assembly structure.
The utlity model has following main feature: 1. to have gas flow area big for spool, and the advantage that performance loss is little has important energy saving and falls this effect; 2. what traditional four-way change-over valve adopted is the gas differential pressure commutation, because volume and weight is bigger, need to increase pilot valve and pressure inlet tube, should guarantee minimum and maximum commutation pressure reduction during commutation, the motor-driven structure of this employing does not need to adopt gas differential pressure to realize commutation, does not need pilot valve and pressure inlet tube, not needing to reach earlier commutation pressure reduction commutates again, effectively simplify four-way valve and structure, reduced leakage point, simplified the control of central air-conditioner heat pump main frame; 3. the structure that the structure that adopts semi-enclosed type machine to drive drives than open-type electric machine, can avoid freezing medium leakage effectively, axle envelope that does not need opening type etc. prevents that the motive sealing that leaks outside from designing, and compares with full-enclosed structure, can dismantle easily and keep in repair.
Description of drawings:
Fig. 1 is the utility model internal cross section structural representation;
Fig. 2 is an A-A sectional drawing among the utility model Fig. 1;
Fig. 3 is a B-B sectional drawing among the utility model Fig. 1;
Fig. 4 is a C-C sectional drawing among the utility model Fig. 1;
Fig. 5 is the utility model valve core structure figure;
Fig. 6 is the utility model refrigeration mode lower valve core nozzle position figure D-D;
Fig. 7 is the utility model heating mode lower valve core nozzle position figure E-E;
Embodiment:
A kind of semi-enclosed electric linear type four-way change-over valve is by end cover 1, spool 2, linkage mechanism 3, valve body 4, actuating motor 5, end cover 6, valve core piston pin 7, air-cooled condenser suction tude interface 8 during refrigeration mode (or the air-cooled vaporizer muffler interface under the heating mode), compressor air-discharging interface tube 9, the muffler interface 10 of the water side vaporizer under the refrigeration mode (or the water side condenser suction tude interface under the heating mode), compressor air suction interface tube 11, locking nut 12, locking jump ring 13, motor axle key 14, electric machine support 15 is formed; As Fig. 1,3, shown in 4, valve body 4 is provided with four connection mouths of pipe that are connected with the refrigeration system pipe, air-cooled condenser suction tude interface 8 when being refrigeration mode respectively (or the air-cooled vaporizer muffler interface under the heating mode), compressor air-discharging interface tube 9, the muffler interface 10 of the water side vaporizer under the refrigeration mode (or the water side condenser suction tude interface under the heating mode), compressor air suction interface tube 11, four uniform being welded on the valve body 4 of connecting tube, each mouth of pipe is interval 90 degree on circumferential direction, when piston valve core turns to position shown in the B-B figure, D and C are communicated with, E and S are communicated with, show that four-way valve is in refrigerating state, D is the compressor exhaust pipe connection mouth, C is a fin tube condenser trach head pipe connection mouth, E is a water side vaporizer sucking pipe connection mouth, and S is the compressor suction duct connection mouth.Under refrigerating state, the High Temperature High Pressure exhaust of compressor flows to the C mouth and enters into the trach head pipe of fin tube condenser through the D mouth, the refrigerant gas of refrigeration agent High Temperature High Pressure is condensed into the refrigerant liquid of High Temperature High Pressure in condenser, the two-phase mix refrigerant advances the water inlet side vaporizer after the decrease temperature and pressure in throttle mechanism, gasification is the overheated gas of low-temp low-pressure behind the heat of the refrigeration agent two-phase mixture absorption refrigerating water of low-temp low-pressure, refrigerant gas flows to the S mouth through the E mouth, promptly turn back to the intakeport of compressor, in compression, the refrigerant gas of low-temp low-pressure is compressed to high-temperature high-pressure state once more, realizes refrigeration cycle.When piston valve core turns to the C-C position of Fig. 4, D and E are communicated with, S and C are communicated with, showing that four-way valve is in heats the position, this moment, C was a finned-tube evaporator muffler connection mouth, E is a water side condenser tracheae connection mouth, the exhaust of compressor will flow to the E mouth and enter into the tracheal entrance of water side condenser through the D mouth, in the water side condenser, after the refrigerant gas of the High Temperature High Pressure that compressor is discharged is condensed into refrigerant liquid, flowing through, decrease temperature and pressure is the refrigeration agent two-phase mixture of low-temp low-pressure in the throttling arrangement again, gasification was overheated refrigerant gas after the refrigeration agent two-phase mixture entered into the heat of air cooling fin pipe evaporator absorbing environmental, refrigerant gas flows to the S mouth through the C mouth, promptly turns back to the intakeport of compressor, realizes heating circulation.Valve body 4 inner grindings are smooth, process shallow chevron shaped oily passage after grinding is finished, and the structure of spool 2 is the cross-channel formula, and spool 2 adopts cast inblocks to form, and after fine finishing, spool 2 grinds and oily runner processing with valve body 4 contact position places.As Fig. 2, shown in Figure 5, the left side of spool 2 is provided with pin-and-hole, valve core piston pin 7 is installed in the pin-and-hole, two ends are fixing with locking nut 12 and locking jump ring 13, valve core piston pin 7 is fixed on the spool 2, prevent that it from skidding off valve core piston pin-and-hole 7, before 7 installations of valve core piston pin, valve core piston pin 7 is sleeved in the attachment hole of linkage mechanism 3, both sides tighten with locking jump ring 13, prevent that linkage mechanism 3 from sliding on valve core piston pin 7, the other end of linkage mechanism 3 is inserted in the motor shaft, by motor axle key 14 the connecting rod collar and motor shaft are snapped together, the terminal lock nut that adopts of motor shaft is fixed described motor shaft, linkage mechanism 3, valve core piston pin 7 guarantees at grade when mounted, when guaranteeing that actuating motor 5 rotates, linkage mechanism 3 can easily move, after each parts installation on the motion, with actuating motor 5 and electric machine support 15 lockings.
The utlity model has simple in structure, easy to operate, volume is little, energy savings, the advantage such as reduce cost, and has great promotional value.
Claims (3)
1. semi-enclosed electric rectilinear movement type four-way change-over valve, the water side evaporator outlet interface tube when the outer pipe interface of the air-cooled vaporizer when the air-cooled condenser inlet tube interface during by end cover, spool, linkage mechanism, valve body, actuating motor, valve core piston pin, compressor air-discharging interface tube, refrigeration mode, heating mode, refrigeration mode, inlet tube interface, compressor air suction interface tube, locking nut, locking jump ring, motor axle key, the electric machine support of the water side condenser under the heating mode are formed; It is characterized in that: valve inner is equipped with spool, valve body is provided with four connection mouths of pipe that are connected with the refrigeration system pipe, four uniform being welded on the valve body of connecting tube, the water side evaporator outlet interface tube when the outer pipe interface of the air-cooled vaporizer when the air-cooled condenser inlet tube interface when being compressor air-discharging interface tube, refrigeration mode respectively, heating mode, refrigeration mode, inlet tube interface, the compressor air suction interface tube of the water side condenser under the heating mode; The left side of spool is provided with pin-and-hole, and the valve core piston pin is installed in the pin-and-hole, and two ends are fixed with locking nut and locking jump ring; The valve core piston guide is contained in the attachment hole of linkage mechanism, and both sides tighten with the locking jump ring; The other end of linkage mechanism is inserted in the motor shaft, by the motor axle key connecting rod collar and motor shaft is snapped together, and the terminal lock nut that adopts of motor shaft is fixed.
2. a kind of semi-enclosed electric rectilinear movement type four-way change-over valve according to claim 1, it is characterized in that: described motor shaft, linkage mechanism, wrist pin guarantee at grade when mounted.
3. a kind of semi-enclosed electric rectilinear movement type four-way change-over valve according to claim 1, it is characterized in that: described valve body, spool, linkage mechanism, actuating motor constitute enclosed valve assembly structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202142752U CN201723776U (en) | 2010-05-29 | 2010-05-29 | Semi-enclosed electric linear motion type 4-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202142752U CN201723776U (en) | 2010-05-29 | 2010-05-29 | Semi-enclosed electric linear motion type 4-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201723776U true CN201723776U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202142752U Expired - Fee Related CN201723776U (en) | 2010-05-29 | 2010-05-29 | Semi-enclosed electric linear motion type 4-way reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201723776U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242815A (en) * | 2011-05-03 | 2011-11-16 | 王志林 | Heat pump air-conditioning water system switching device |
| CN106015649A (en) * | 2016-08-03 | 2016-10-12 | 联合阀业（深圳）有限公司 | Cross valve |
| CN106050781A (en) * | 2016-07-21 | 2016-10-26 | 北京玖鼎力源科技有限公司 | Hydraulic high-frequency energy-saving servo valve |
| CN109405342A (en) * | 2018-12-17 | 2019-03-01 | 无锡职业技术学院 | Four-way reversing valve and heat-exchange system including the four-way reversing valve |
-
2010
- 2010-05-29 CN CN2010202142752U patent/CN201723776U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242815A (en) * | 2011-05-03 | 2011-11-16 | 王志林 | Heat pump air-conditioning water system switching device |
| CN106050781A (en) * | 2016-07-21 | 2016-10-26 | 北京玖鼎力源科技有限公司 | Hydraulic high-frequency energy-saving servo valve |
| CN106015649A (en) * | 2016-08-03 | 2016-10-12 | 联合阀业（深圳）有限公司 | Cross valve |
| CN109405342A (en) * | 2018-12-17 | 2019-03-01 | 无锡职业技术学院 | Four-way reversing valve and heat-exchange system including the four-way reversing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20130529 |