CN108343777A - Motor-driven valve and refrigerating circulation system - Google Patents
Motor-driven valve and refrigerating circulation system Download PDFInfo
- Publication number
- CN108343777A CN108343777A CN201810000970.XA CN201810000970A CN108343777A CN 108343777 A CN108343777 A CN 108343777A CN 201810000970 A CN201810000970 A CN 201810000970A CN 108343777 A CN108343777 A CN 108343777A
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- externally threaded
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- motor
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Links
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000004734 Polyphenylene sulfide Substances 0.000 description 6
- 229920000069 polyphenylene sulfide Polymers 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- -1 stainless steels Chemical class 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
A kind of motor-driven valve of present invention offer and refrigerating circulation system can be such that rotor properly rotates and have high action.The rotary motion of the rotor for the inner circumferential for being accommodated in shell is transformed into linear motion by the motor-driven valve by thread binding of externally threaded item and interior threaded part, and the spool being accommodated in valve body is set to move in the axial direction based on the linear motion, and, the motor-driven valve has sleeve member, the sleeve member is formed with for the perforation of above-mentioned externally threaded item and fixed through hole, and the rotation of above-mentioned rotor is transferred to above-mentioned externally threaded item, for the difference of the inner circumferential diameter of above-mentioned through hole and the periphery diameter of above-mentioned externally threaded item, it is smaller than the externally threaded crest diameter of above-mentioned externally threaded item and the difference of the tooth bottom diameter of the internal thread of above-mentioned interior threaded part and the externally threaded tooth bottom diameter of above-mentioned externally threaded item and a side smaller in the difference of the crest diameter of the internal thread of above-mentioned interior threaded part.
Description
Technical field
The present invention relates to motor-driven valve and the refrigerating circulation system of the motor-driven valve is used.
Background technology
At present it is known that the motor-driven valve for floor air conditioner, indoor air conditioner, refrigerator etc. is (for example, referring to patent document
1).As shown in fig. 6, in the motor-driven valve 100, when stepper motor drives and rotor 103 rotates, using internal thread 131a and outside
The screw thread feeding of screw thread 121a acts on, and spool 114 moves on central axis L direction.The opening and closing of valve port 121, control are adjusted as a result,
The flow of refrigerant from the inflow of pipe fitting 111 and from the outflow of pipe fitting 112.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2012-172839 bulletins
Invention content
Problems to be solved by the invention
But in above-mentioned motor-driven valve 100, because of the gap between external screw thread 121a and internal thread 131a, it may obtain not
To the good action of motor-driven valve 100.
For example, when valve shaft 141 to be welded in the through hole 133a of sleeve member 133, as shown in fig. 7, valve shaft 141 also may be used
Shaft core can be deviateed and be fixed on the position of biasing.In this case, if external screw thread 121a and the engaged gap of internal thread 131a are big,
Rotor 103 is rotated centered on the axis of biasing, therefore the action of motor-driven valve 100 is obstructed, it is difficult to rotor 103 be made to revolve in high precision
Turn.
The purpose of the present invention is to provide rotor can be made properly to rotate and with high action motor-driven valve and make
With the refrigerating circulation system of the motor-driven valve.
Solution for solving the problem
The motor-driven valve of the present invention will be accommodated in shell by the thread binding of externally threaded item and interior threaded part
The rotary motion of the rotor in week is transformed into linear motion, and makes the spool being accommodated in valve body in axial direction based on the linear motion
Upper movement, said electric valve are characterized in that having sleeve member, which is formed with penetrates through for above-mentioned externally threaded item
And fixed through hole, and the rotation of above-mentioned rotor is transferred to above-mentioned externally threaded item, with regard to above-mentioned through hole inner circumferential diameter with
For the difference of the periphery diameter of above-mentioned externally threaded item, than externally threaded crest diameter and the above-mentioned internal thread part of above-mentioned externally threaded item
The interior spiral shell of the difference of the tooth bottom diameter of the internal thread of part and the externally threaded tooth bottom diameter and above-mentioned interior threaded part of above-mentioned externally threaded item
A smaller side is small in the difference of the crest diameter of line.
In this way, the gap between the through hole and externally threaded item of constriction sleeve member, so as to inhibit rotor to rotate
When rotor relative to shaft core core shift.Therefore, it is possible to make rotor properly rotate, it is capable of providing the motor-driven valve with high action.
In addition, the motor-driven valve of the present invention is characterized in that, with regard to the periphery diameter of the inner circumferential diameter and above-mentioned rotor of above-mentioned shell
For difference, than the internal thread of the externally threaded crest diameter and above-mentioned interior threaded part of above-mentioned externally threaded item tooth bottom diameter difference and
Larger one in the difference of the crest diameter of the externally threaded tooth bottom diameter of above-mentioned externally threaded item and the internal thread of above-mentioned interior threaded part
Fang great.
In this way, the interval in the gap between broadening shell and rotor, rotor contacts shell when so as to prevent rotor from rotating
The inside of body and rotor is slided in the inner peripheral surface of shell.
In addition, the motor-driven valve of the present invention is characterized in that above-mentioned interior threaded part is formed by resin.
Thereby, it is possible to reduce the friction coefficient of interior threaded part, durability can be improved.
In addition, the freeze cycle of the present invention includes compressor, condenser, expansion valve and evaporator etc., above-mentioned freezing follows
Loop system is characterized in that, using above-mentioned motor-driven valve as above-mentioned expansion valve.
Invention effect
In accordance with the invention it is possible to provide motor-driven valve and the use that rotor can be made properly to rotate and there is high action
The refrigerating circulation system of the motor-driven valve.
Description of the drawings
Fig. 1 is the sectional view of the motor-driven valve of embodiment.
Fig. 2 is the enlarged cross-sectional view of the thread binding part of the motor-driven valve of embodiment.
Fig. 3 is the enlarged cross-sectional view in the gap between the sleeve member of embodiment and valve shaft.
Fig. 4 is the enlarged cross-sectional view in the gap between the shell of embodiment and rotor.
Fig. 5 is the figure for indicating the inclined state of the shaft core of rotary shaft in motor-driven valve.
Fig. 6 is the sectional view of existing motor-driven valve.
Fig. 7 is the sectional view for illustrating valve shaft deviation shaft core in motor-driven valve and being fixed on the state of sleeve member.
In figure：
2-motor-driven valves, 4-rotors, the periphery of 4o-rotor, 6-valve shaft framves, 6a-tubular small diameter portion, 6d-internal thread,
The thread crest of 6m-internal thread, the Bottom of Thread of 6v-internal thread, 17-spools, 33-sleeve members, 33a-through hole,
The inner circumferential of 33i-through hole, 34-gaps, 41-valve shafts, 41a-external screw thread, the externally threaded screw thread of 41c-weld part, 41m-
Crest, the periphery of 41o-valve shaft, the externally threaded Bottom of Thread of 41v-, 60-shells, the inner circumferential of 60i-shell, 66-gaps,
68-gaps.
Specific implementation mode
Hereinafter, with reference to attached drawing, the motor-driven valve of embodiments of the present invention is illustrated.Fig. 1 indicates embodiment
The sectional view of motor-driven valve 2.In addition, in the present specification, "up" and "down" is defined in the state of Fig. 1.That is, rotor 4
In more against the top than spool 17.
In the motor-driven valve 2, in the case where forming the open side of the shell 60 of cup-shaped of tubular by the metal of nonmagnetic material
Side has been integrally connected valve body 30 by welding etc..
Here, valve body 30 is made of metals such as stainless steels, and there is valve chamber 11 in inside.In addition, solid in valve body 30
Surely the stainless steel being directly connected to valve chamber 11 or the first pipe fitting 12 made of copper are equipped with.Moreover, in the lower section of valve body 30
Inside is incorporated with the valve base part 16 for being formed with the circular valve port 16a of section.Have via valve port in 16 fixing assembling of valve base part
16a is communicated in the stainless steel of valve chamber 11 or the second pipe fitting 15 made of copper.
It is accommodated with the rotor 4 that can be rotated in the inner circumferential of shell 60, matches via sleeve member 33 in the shaft core part of rotor 4
It is equipped with valve shaft 41.The valve shaft 41 and rotor 4 combined by sleeve member 33 is ined the up-down direction integrally while rotating
It is mobile.In addition, the peripheral surface near the middle part of the valve shaft 41 is formed with external screw thread 41a.In the present embodiment, valve shaft 41
Play the function of externally threaded item.
Here, sleeve member 33 is made of metals such as stainless steels, and to be formed with the perforation penetrated through for valve shaft 41 in center
The cylindric component of hole 33a.Rotor 4 is by tools such as resin materials, the ferrite lattices such as the polyphenylene sulfide (PPS) containing magnetic powder
Magnetic raw material is formed.In addition, sleeve member 33 is fixed on rotor 4 by embedded forming.In addition, valve shaft 41 is by making valve shaft
The through hole 33a of 41 perforation sleeve members 33 simultaneously forms weld part 41c and is fixed on sleeve member 33.In this way, rotor 4 and bushing
Component 33, sleeve member 33 and valve shaft 41 are fixed respectively, and valve shaft 41 is transferred to the rotation of rotor 4.
In stator of the periphery of shell 60 configured with compositions such as not shown yoke, bobbin and coils, by rotor 4
Stepper motor is constituted with stator.
It is fixed with guide support body 52 in the ceiling face of shell 60.Guide support body 52 has cylindrical portion 53 and is formed in circle
The umbrella portion 54 of the upper end side of canister portion 53, and it is integrally formed entirely through punch process.Umbrella portion 54 is formed as and shell 60
Inside top same shape.
It cannot be fixed with valve shaft frame with the relative rotation relative to valve body 30 on the lower in the ratio sleeve member 33 of valve shaft 41
6, valve shaft frame 6 is constituted between valve shaft 41 as be described hereinafter is screwed A, and with inhibition 41 inclined function of valve shaft.
Valve shaft frame 6 is formed such as the resin material by polyphenylene sulfide (PPS), and contains addition to reduce friction coefficient
Agent.As additive, fluorine resins, the carbon fibers such as polytetrafluoroethylene (PTFE) (PTFE) etc. are used.
The tubular small diameter portion 6a of the valve shaft frame 6 including upper side, the tubular large-diameter portion 6b of lower side, it is accommodated in valve body 30
Inner peripheral portion side fitting portion 6c and round lip portions 6f.Moreover, the lip portions 6f of valve shaft frame 6 is fixed by welding etc.
In the upper end of valve body 30.In addition, being formed with the receiving room 6h for storing aftermentioned valve guide part 18 in the inside of valve shaft frame 6.
In addition, being formed with downwards to scheduled depth from the upper opening portion 6g of the tubular small diameter portion 6a of the valve shaft frame 6
Internal thread 6d.Therefore, in the present embodiment, valve shaft frame 6 plays the function of interior threaded part.Then, by being formed in valve shaft
The external screw thread 41a of 41 periphery and the internal thread 6d of the inner circumferential for the tubular small diameter portion 6a for being formed in valve shaft frame 6 are constituted and are screwed
A。
Moreover, the side perforation in the tubular large-diameter portion 6b of valve shaft frame 6 is provided with balancing orifice 51, by the balancing orifice 51,
It is connected between valve shaft frame room 83 and rotor receiving room 67 (the second back pressure chamber) in tubular large-diameter portion 6b.It is arranged in this way and presses
Hole 51 can swimmingly carry out valve shaft frame 6 by the space being connected in the space and valve shaft frame 6 of storage rotor 4 of shell 60
Shift action.
In addition, can slidably the valve configured with tubular be led relative to the receiving room 6h of valve shaft frame 6 in the lower section of valve shaft 41
To part 18.21 side of ceiling portion of the valve guide part 18 is substantially at right angles by stamping bending.Moreover, in 21 shape of ceiling portion
At there is through hole 18a.In addition, being also formed with flange part 41b in the lower section of valve shaft 41.
Here, valve shaft 41 relative to valve guide part 18 can rotate and can be passed through radially with clearance in a manner of displacement
Logical state is inserted into the through hole 18a of valve guide part 18, and flange part 41b relative to valve guide part 18 can rotate and radially
The mode for capableing of displacement is configured in valve guide part 18.In addition, valve shaft 41 inserts through hole 18a, and it is configured to flange part 41b's
Upper surface is opposed with the ceiling portion 21 of valve guide part 18.In addition, flange part 41b is bigger than the through hole 18a diameters of valve guide part 18,
To prevent valve shaft 41 from falling off.
Valve shaft 41 and valve guide part 18 can move mutually radially, to the configuration about valve shaft frame 6 and valve shaft 41
Position does not require excessively high same core installation accuracy and can obtain the same core with valve guide part 18 and spool 17.
It is provided between the ceiling portion 21 of valve guide part 18 and the flange part 41b of valve shaft 41 and is formed with perforation in central portion
The washer 70 in hole.Washer 70 is preferably high-slips resin washer or the high-slips such as the made of metal washer on high-slip surface, fluororesin
The made of metal washer of resinous coat, the various resin washers etc. containing high-slip resin.
Moreover, being accommodated with the valve spring 27 having compressed and spring base 35 in valve guide part 18.
Next, being illustrated to the size relationship that the main points of the present invention are the component for constituting motor-driven valve 2.Fig. 2 is to implement
The enlarged cross-sectional view of the thread binding part A of the motor-driven valve 2 of mode.As shown in Fig. 2, in the periphery for the valve shaft 41 for combining part A
It is formed with external screw thread 41a, internal thread 6d is formed in the inner circumferential of the tubular small diameter portion 6a of valve shaft frame 6.In addition, internal thread 6d's is interior
Diameter be designed to it is bigger than the outer diameter of external screw thread 41a, in thread crest 41m, Bottom of Thread 41v and the internal thread 6d of external screw thread 41a
It is formed with gap 66 between thread crest 6m, Bottom of Thread 6v radially respectively.
In addition, Fig. 3 is the enlarged cross-sectional view for the part of the motor-driven valve 2 of embodiment being shown in the circle B of Fig. 1.Such as Fig. 3 institutes
Show, the periphery 41o in the part for running through through hole 33a of valve shaft 41 does not form screw thread, in the through hole 33a of sleeve member 33
Inner circumferential 33i and the periphery 41o of valve shaft 41 between there are gaps 34.The gap 34 forms narrower than gap 66.That is, through hole
The difference of the inner circumferential diameter of 33a and the periphery diameter of valve shaft 41 (externally threaded item) be formed as than in difference shown in (1) below, (2) compared with
A small side is small.
(1) the crest diameter (the periphery diameter of thread crest 41m) of the external screw thread 41a of valve shaft 41 (externally threaded item) and valve shaft frame
The difference of the tooth bottom diameter (the inner circumferential diameter of Bottom of Thread 6v) of the internal thread 6d of 6 (interior threaded parts)；
(2) the tooth bottom diameter (the periphery diameter of Bottom of Thread 41v) of the external screw thread 41a of valve shaft 41 (externally threaded item) and valve shaft frame
The difference of the crest diameter (the inner circumferential diameter of thread crest 6m) of the internal thread 6d of 6 (interior threaded parts).
Moreover, Fig. 4 is the enlarged cross-sectional view for the part of the motor-driven valve 2 of embodiment being shown in the circle C of Fig. 1.Such as Fig. 4 institutes
Show in motor-driven valve 2, there is the gap 68 wider than gap 66 between the inner circumferential 60i of shell 60 and the periphery 4o of rotor 4.That is,
The side that the difference of the inner circumferential diameter of shell 60 and the periphery diameter of rotor 4 is formed as more larger than in difference shown in above-mentioned (1), (2) is big.
According to the motor-driven valve 2 of the embodiment, the gap 34 between the through hole 33a of sleeve member 33 and valve shaft 41 is made to compare
Gap 66 between external screw thread 41a and internal thread 6d is narrow, so as to inhibit the rotor 4 when rotor 4 rotates inclined relative to shaft core
Core.Thereby, it is possible to make rotor 4 properly rotate, it is capable of providing the motor-driven valve 2 with high action.
In addition, as described above, valve shaft frame 6 (interior threaded part) is formed by resins such as polyphenylene sulfides (PPS), therefore friction is
Number is low, and excellent in te pins of durability.On the other hand, with regard to generally for the component for the resin that injection moulding shapes, if considering
The distinctive change in size of ester mouldings such as dent, the deformation of warpage equidimension, line expansion, swelling caused by injection moulding, then
There is the case where being difficult to precision form more.
Therefore, in the case where using the valve shaft frame 6 of resin, production is engaged with external screw thread 41a and internal thread 6d
Raw gap 66 is easy to bigger tendency.If gap 66 becomes larger, as shown in figure 5, may not only rotor 4, but also valve shaft 41 is (outer
Screwed part) also rotated centered on the axis of biasing.
But by making the gap 34 between the through hole 33a of sleeve member 33 and valve shaft 41 than external screw thread 41a and interior spiral shell
Gap 66 between line 6d is narrow, so as to inhibit rotor 4 eccentric.Therefore, in motor-driven valve 2, by 6 (internal thread of valve shaft frame
Component) make resin system in the case of, the effect that can reduce the influence to action is more notable.
In addition, according to the motor-driven valve 2 of embodiment, the gap 68 between the inner circumferential of shell 60 and the periphery of rotor 4 is expanded
Width, and bigger than gap 66, so as to prevent the inside of the contact of rotor 4 shell 60 when rotor 4 rotate and rotor 4 in shell 60
Inner peripheral surface sliding.Therefore, it is possible to make 4 high-precision of rotor and properly rotate.
Herein, it is also considered that following situations, in the case where using the valve shaft frame 6 of resin, due to external screw thread 41a with
Gap 66 between internal thread 6d becomes larger, to which as shown in figure 5, the shaft core of rotary shaft tilts, rotor 4 contacts (ginseng with shell 60
According in circle F), and hinder the rotation of rotor 4.
But by gap 68 (with reference to Fig. 4) broadening between the inner circumferential of shell 60 and the periphery of rotor 4, gap 68 is made to compare
Gap 66 is big, though can make if in the case where valve shaft frame 6 (interior threaded part) is made resin rotor 4 not with
Shell 60 contacts.
In addition, the interval in rotor 4 and the gap 68 of shell 60 is not necessarily to excessively broadness.Therefore, even if broadening rotor 4 and shell
60 gap 68, as long as gap 68 is maintained predetermined space or less, it will be able to by the air gap of rotor 4 and coil be suppressed to compared with
It is small, the reduction of torque can be reduced.
In addition, in the motor-driven valve 2 of present embodiment, it is for the case where component different from rotor 4 with sleeve member 33
Example is illustrated, but rotor 4 and sleeve member 33 can also be used as a component and formed.In this case, the rotation of rotor 4
It is also transmitted to valve shaft 41.
In addition, in the motor-driven valve 2 of present embodiment, the case where being formed by resin with valve shaft frame 6 (interior threaded part), is
Example is illustrated, but valve shaft frame 6 can also be formed by metal.Even if valve shaft frame 6 be made of metal, as long as external screw thread 41a with
Gap 66 between internal thread 6d is big, it will be able to pass through the gap between the through hole 33a and valve shaft 41 of constriction sleeve member 33
34 come rotor when rotor being inhibited to rotate 4 relative to shaft core core shift.
In addition, the motor-driven valve 2 of present embodiment is constituted such as by compressor, condenser, expansion valve and evaporator
Refrigerating circulation system in be used as being set to expansion valve between condenser and evaporator.
Claims (4)
1. a kind of motor-driven valve will be accommodated in the inner circumferential of shell by the thread binding of externally threaded item and interior threaded part
The rotary motion of rotor is transformed into linear motion, and so that the spool being accommodated in valve body is moved in the axial direction based on the linear motion
It is dynamic,
Said electric valve is characterized in that,
Has sleeve member, which is formed with for the perforation of above-mentioned externally threaded item and fixed through hole, and will be above-mentioned
The rotation of rotor is transferred to above-mentioned externally threaded item,
It is outer than above-mentioned externally threaded item for the difference of the inner circumferential diameter of above-mentioned through hole and the periphery diameter of above-mentioned externally threaded item
The externally threaded tooth of the crest diameter of screw thread and the difference and above-mentioned externally threaded item of the tooth bottom diameter of the internal thread of above-mentioned interior threaded part
Bottom diameter and a side smaller in the difference of the crest diameter of the internal thread of above-mentioned interior threaded part are small.
2. motor-driven valve according to claim 1, which is characterized in that
For the difference of the inner circumferential diameter of above-mentioned shell and the periphery diameter of above-mentioned rotor, than the externally threaded tooth of above-mentioned externally threaded item
Push up the externally threaded tooth bottom diameter of the poor and above-mentioned externally threaded item of diameter and the tooth bottom diameter of the internal thread of above-mentioned interior threaded part with it is upper
It is big to state a side larger in the difference of the crest diameter of the internal thread of interior threaded part.
3. motor-driven valve according to claim 1 or 2, which is characterized in that
Above-mentioned interior threaded part is formed by resin.
4. a kind of refrigerating circulation system, it includes compressor, condenser, expansion valve and evaporator etc.,
Above-mentioned refrigerating circulation system is characterized in that,
Using the motor-driven valve described in any one of claims 1 to 33 as above-mentioned expansion valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-011528 | 2017-01-25 | ||
| JP2017011528A JP6691064B2 (en) | 2017-01-25 | 2017-01-25 | Motorized valve and refrigeration cycle system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108343777A true CN108343777A (en) | 2018-07-31 |
| CN108343777B CN108343777B (en) | 2019-06-18 |
Family
ID=62960617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810000970.XA Active CN108343777B (en) | 2017-01-25 | 2018-01-02 | Motor-driven valve and refrigerating circulation system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6691064B2 (en) |
| CN (1) | CN108343777B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805699A (en) * | 2019-11-22 | 2020-02-18 | 东台市高科技术创业园有限公司 | Electronic expansion valve for refrigerating system |
| CN113551048A (en) * | 2021-07-05 | 2021-10-26 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7266871B2 (en) * | 2019-09-12 | 2023-05-01 | 株式会社テージーケー | electric valve |
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| US20130206851A1 (en) * | 2012-02-10 | 2013-08-15 | Kabushiki Kaisha Saginomiya Seisakusho | Expansion valve |
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| CN113551048A (en) * | 2021-07-05 | 2021-10-26 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
| CN113551048B (en) * | 2021-07-05 | 2023-09-26 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108343777B (en) | 2019-06-18 |
| JP6691064B2 (en) | 2020-04-28 |
| JP2018119612A (en) | 2018-08-02 |
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