CN113606360A - Full-through throttling electronic expansion valve - Google Patents
Full-through throttling electronic expansion valve Download PDFInfo
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- CN113606360A CN113606360A CN202110809536.8A CN202110809536A CN113606360A CN 113606360 A CN113606360 A CN 113606360A CN 202110809536 A CN202110809536 A CN 202110809536A CN 113606360 A CN113606360 A CN 113606360A
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- flow passage
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- sealing ring
- passage
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- 239000008358 core component Substances 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 49
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 12
- 239000003507 refrigerant Substances 0.000 description 8
- 239000000306 component Substances 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
- F16K11/0873—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug the plug being only rotatable around one spindle
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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
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
- F16K11/0873—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug the plug being only rotatable around one spindle
- F16K11/0876—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug the plug being only rotatable around one spindle one connecting conduit having the same axis as the spindle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an all-pass throttling electronic expansion valve, which comprises a valve seat assembly and a valve core component, the valve core component is connected on the valve seat assembly and comprises a rotor and a valve core which are coaxially and fixedly connected, the rotor drives the valve core to rotate around the central axis of the valve core, the valve seat assembly comprises a valve seat, a valve cavity is arranged in the valve seat, the valve core is a sphere, the shape of the valve cavity corresponds to that of the valve core, a first flow passage which is perpendicular to the central axis of the rotor and used for realizing full communication and a second flow passage used for throttling are arranged on the valve core, the first flow passage and the second flow passage are arranged in parallel, a first passage for communicating only the first flow passage and a second passage for communicating only the second flow passage are arranged on the valve seat, and the first passage and the second flow passage are arranged perpendicularly to each other. The invention not only has compact structure, but also can realize the effects of large-flow circulation and small-flow throttling.
Description
Technical Field
The invention discloses an electronic expansion valve, belongs to the technical field of expansion valves, and particularly discloses an all-pass throttling electronic expansion valve.
Background
Electronic expansion valves have been used in domestic, commercial and automotive air conditioners, and in the prior art, electronic expansion valves generally adopt a structure that a rotor of a stepping motor is connected with a valve core, and the rotor rotates in the radial direction into axial motion through thread transmission, and the rotor rotates while driving and moving in the radial direction along with the valve core. The one-way throttle control is realized by opening and closing the valve core and the valve core seat.
At present, a heat pump type electric air conditioning system of a new energy automobile is formed by connecting an electric scroll compressor, an electronic expansion valve and a bypass electromagnetic valve in parallel to form a heat pump system, when a carriage is internally refrigerated and an external condenser is heated, in order to realize large-flow of a refrigerant, the bypass electromagnetic valve with a large caliber is opened, and the electronic expansion valve with a small caliber is closed; when the interior of the carriage is heated, the external condenser is used as an evaporator, when a refrigerant flows in the system, the refrigerant in the system needs to be throttled, the large-caliber electromagnetic valve is closed, and the small-caliber electronic expansion valve controls the flow of the refrigerant.
Because the electronic expansion valve and the electromagnetic valve are in parallel connection and are independently arranged in the system, the manufacturing cost is higher, the occupied space of the whole system in an automobile is larger, and in a narrow engine room of an automobile engine, the assembly and installation of refrigeration accessories are difficult and the debugging is inconvenient. In addition, the structure has more connecting points, the pipeline is a rigid connecting pipe, the rigidity is high, and the risk of cold leakage is increased.
The specification of the chinese invention patent CN110360364A discloses a full-flow electronic expansion valve, which comprises a valve seat assembly and a valve core assembly, wherein the valve core assembly is connected to the valve seat assembly, the valve seat assembly comprises a valve seat, the valve seat comprises a valve cavity, a first passage and a second passage, the valve cavity comprises an upper cavity, a middle cavity and a lower cavity, the upper cavity is communicated with the second passage, the lower cavity is communicated with the first passage, the upper cavity and the middle cavity are communicated or separated through the valve core assembly, a piston assembly communicating or separating the lower cavity and the second passage is arranged in the valve cavity, the piston assembly is positioned between the middle cavity and the lower cavity, and a throttle hole communicating the middle cavity and the lower cavity is arranged on the piston assembly. The invention integrates the functions of the conventional electronic expansion valve and the electromagnetic valve into a whole through an integrated parallel structure, but the valve seat structure is complex and is not convenient to process and manufacture.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an all-pass throttling electronic expansion valve which is compact in structure and can achieve the effects of large-flow circulation and small-flow throttling.
The invention discloses an all-pass throttling electronic expansion valve, which comprises a valve seat assembly and a valve core component, the valve core component is connected on the valve seat assembly and comprises a rotor and a valve core which are coaxially and fixedly connected, the rotor drives the valve core to rotate around the central axis of the valve core, the valve seat assembly comprises a valve seat, a valve cavity is arranged in the valve seat, the valve core is a sphere, the shape of the valve cavity corresponds to that of the valve core, a first flow passage which is perpendicular to the central axis of the rotor and used for realizing full communication and a second flow passage used for throttling are arranged on the valve core, the first flow passage and the second flow passage are arranged in parallel, a first passage for communicating only the first flow passage and a second passage for communicating only the second flow passage are arranged on the valve seat, and the first passage and the second passage are arranged perpendicularly to each other.
In a preferred embodiment of the present invention, a cross-sectional shape of the first flow channel perpendicular to a central axis thereof is a semicircle having a diameter of 6 to 8 mm.
In a preferred embodiment of the present invention, the second flow passage includes a convergent flow passage and a linear flow passage which are communicated with each other, a cross-sectional shape of the convergent flow passage perpendicular to a central axis thereof is a kidney-shaped hole, a cross-sectional shape of the convergent flow passage parallel to the central axis thereof is a sector, a cross-sectional shape of the linear flow passage perpendicular to the central axis thereof is a circular hole corresponding to a width of the kidney-shaped hole, and a diameter of the circular hole is 1.5 to 1.8 mm.
In a preferred embodiment of the present invention, the connection between the convergent channel and the linear channel is located at the center of the valve body.
In a preferred embodiment of the present invention, the first passage includes a through hole provided in the valve body and communicating with the valve chamber, the through hole is screwed with a passage pipe joint, a pipe connecting groove is coaxially provided on one end surface of the passage pipe joint, a seal ring mounting groove is coaxially provided on the other end surface, the pipe connecting groove and the seal ring mounting groove communicate with each other through a first orifice, a seal ring is provided in the seal ring mounting groove, an end surface of the seal ring facing the valve chamber is a spherical seal surface corresponding to the valve element, and a second orifice for communicating the first flow passage and the first orifice is provided in the seal ring.
In a preferred embodiment of the present invention, the second passage includes a through hole provided in the valve body and communicating with the valve chamber, the through hole is in threaded connection with a passage pipe joint, a pipe connecting groove is coaxially provided on one side end surface of the passage pipe joint, a sealing ring mounting groove is coaxially provided on the other side end surface, the pipe connecting groove and the sealing ring mounting groove are communicated through a third orifice, a sealing ring is provided in the sealing ring mounting groove, an end surface of the sealing ring facing the valve chamber is a spherical sealing surface corresponding to the valve core, and a fourth orifice for communicating the second flow passage and the third orifice is provided on the sealing ring.
In a preferred embodiment of the present invention, the shape and the arrangement position of the second throttle hole correspond to those of the first throttle hole; the shape and the arrangement position of the third orifice correspond to those of the fourth orifice.
In a preferred embodiment of the present invention, the sealing ring is detachably connected to the channel pipe joint by a screw, and the sealing ring is connected to the valve body in an interference fit manner.
In a preferred embodiment of the present invention, the channel pipe joint is provided with a limit step on an outer circumferential surface thereof.
In a preferred embodiment of the present invention, the valve core comprises a first shaft section, which is coaxially arranged and is used for connecting a rotor of the valve core component, a second shaft section, which is used for being matched with a pre-tightening spring in the valve core component, a third shaft section, which is used for being matched and guided with a first valve core seat in the valve core component, a ball section, which is matched with a valve cavity in the valve seat, and a fifth shaft section, which is used for being matched with a second valve core seat in the valve seat
The invention has the beneficial effects that: the invention has compact structure, convenient assembly and simple control, and the electronic expansion valve can replace 1 electromagnetic valve and 1 electronic expansion valve to realize large-flow circulation and small-flow throttling effect by selecting the structural design of the ball valve core matched with the first flow passage and the second flow passage on the valve core and the first passage and the second passage on the valve seat, so that the structure of a heat pump system using the all-pass throttling electronic expansion valve is more compact; furthermore, the structure design of the first flow passage and the second flow passage enables the two working conditions of full communication and throttling to be realized, and the structure is simple and convenient to manufacture and assemble; furthermore, the valve core can be quickly and accurately switched between the full-through working condition and the throttling working condition through the driving of the rotor by the structural design of the valve seat, so that the sealing effect is good, and the control strategy is simple; furthermore, the first channel and the second channel are designed in a mode that the through holes are matched with the channel pipe joint, and the channel pipe joint is provided with the sealing ring mounting groove, the pipeline connecting groove and the throttling hole positioned between the sealing ring mounting groove and the pipeline connecting groove, so that the throttling effect of the invention is better; furthermore, the limiting steps are arranged on the outer peripheral surface of the channel pipe joint, so that the positioning and the installation are facilitated; furthermore, the valve core is designed into a five-section structure to be integrally formed, so that assembly is facilitated.
Drawings
FIG. 1 is an exemplary simplified heat pump system application scenario;
FIG. 2 is a first axial view of an all-pass electronic expansion valve according to an embodiment of the present invention;
FIG. 3 is a second axial view of an all-pass electronic expansion valve according to an embodiment of the present invention;
FIG. 4 is a sectional view of a valve body assembly of an all-pass electronic expansion valve according to the present embodiment;
FIG. 5 is a valve plug axial view of an all-pass electronic expansion valve according to the present embodiment;
FIG. 6 is an axial view of a valve core component of the all-pass electronic expansion valve according to the present embodiment;
fig. 7 is an axial view of the first and third channel joints of an all-pass electronic expansion valve according to the present embodiment;
fig. 8 is a sectional view of the joints of the first and third passages of the all-pass electronic expansion valve according to the embodiment;
fig. 9 is an axial view of a fourth passage pipe joint of the all-pass electronic expansion valve according to the embodiment;
fig. 10 is a sectional view of a fourth passage pipe joint of the all-pass electronic expansion valve according to the embodiment;
fig. 11 is an axial view of a second passage pipe joint of an all-pass throttle electronic expansion valve according to the embodiment;
fig. 12 is a sectional view of a second channel joint of an all-pass electronic expansion valve according to the present embodiment;
FIG. 13 is an axial view of a nut of an all-pass electronic expansion valve according to an embodiment of the present invention;
FIG. 14 is a sectional view of an upper passage of a fourth stage of the spool according to the present embodiment (rotation start position);
FIG. 15 is a sectional view of the lower passage of the fourth stage of the spool according to the present embodiment (rotation end position);
in the figure: 1-coil assembly, 2-valve body assembly, 3-first channel pipe joint, 4-second channel pipe joint, 5-third channel pipe joint, 6-fourth channel pipe joint, 7-rotor assembly, 8-first valve core seat, 9-nut, 10-valve core, 11-nut assembly, 12-valve seat, 13-second valve core seat, 14-pre-tightening spring, 15-semicircular channel, 16-waist-shaped channel, 17-circular channel, 18-thread, 19-pipe joint, 20-semicircular channel throttling hole, 21-semicircular channel of sealing ring, 22-installation process hole, 23-limiting step, 24-pipe joint sealing ring, 25-sealing ring, 26-spherical sealing surface, 27-sealing ring, 28-waist channel orifice, 29-waist channel of sealing ring, 30-round channel orifice, 31-round channel of sealing ring, 32-rotation start stop, 33-rotation end stop.
Detailed Description
The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings and by way of illustration of some alternative embodiments of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Referring to the simple heat pump system shown in fig. 1, when the interior of a carriage is refrigerated and an external condenser is heated, in order to realize large-flow of a refrigerant, a bypass large-caliber electromagnetic valve is opened, and a small-caliber electronic expansion valve is closed; when the interior of a carriage is heated, the external condenser is used as an evaporator, when a refrigerant flows in the system, the refrigerant in the system needs to be throttled, the large-caliber electromagnetic valve is closed, and the small-caliber electronic expansion valve controls the flow of the refrigerant, and the technical scheme has the defects that 1 electromagnetic valve and 1 electronic expansion valve occupy large space and are complex to control.
In order to solve the technical problems, the invention discloses an all-pass throttling electronic expansion valve for a vehicle, which can replace 1 electromagnetic valve and 1 electronic expansion valve to realize the effects of large-flow circulation and small-flow throttling;
the full-through throttle electronic expansion valve shown in the attached drawings of the specification is mainly composed of the following three parts:
1. a coil assembly: the magnetic valve is arranged outside the valve core component (provides a magnetic field for the rotor to form radial rotary motion);
2. valve element part (detachably mounted on valve seat assembly by threaded connection):
1) a rotor assembly: the valve comprises a rotor (which is arranged on a nut in a matched manner through groove teeth and is matched with a coil assembly to form circumferential rotation motion), a valve core (which is driven to rotate through the rotor), a first valve core seat and a pre-tightening spring;
2) a nut component: the valve seat assembly comprises a nut (matched with the rotor assembly through groove teeth and fixedly arranged on the valve seat assembly through threads at the bottom of the nut assembly);
3) sleeving a sleeve: the sleeve wraps the rotor component and the nut component and can be installed and inserted into the hole of the coil assembly;
3. valve seat assembly: (removably mounting the spool member by a threaded connection);
1) valve seat: 4 threaded holes and 4 stepped limiting holes are arranged on the periphery of the valve body, 1 threaded hole and 1 stepped limiting hole are arranged at the top of the valve body, and a valve core mounting hole is arranged at the bottom of the valve body;
2) a channel pipe joint: the device comprises a pipe joint, a throttling hole, an installation process hole, a limiting step, a channel pipe joint sealing ring, a sealing ring and a sealing ring;
the all-pass throttle electronic expansion valve in the embodiment comprises a valve body assembly 2 and a coil assembly 1 installed on the valve body assembly 2, wherein the coil assembly 1 is connected with the valve body assembly through a clamping piece and a screw.
The valve body assembly 2 comprises a valve seat assembly and a valve core part shown in the attached figure 6, wherein the valve core part is arranged on the valve seat assembly through threads and is limited through a stepped hole; the core component shown in figure 6 comprises a rotor assembly 7 and a nut assembly 11;
a valve core 10 and a rotor which are coaxially arranged are arranged in the rotor assembly 7, the rotor is sleeved and fixedly connected on the outer side of the valve core 10, a nut 9 is arranged between the valve core 10 and the rotor, the nut 9 is fixedly connected with a valve seat 12 through a fixing part of a nut assembly 11 in a welding mode, the rotor is fixedly connected with the valve core 10 in a welding mode, an axial rotating space is formed between the rotor and the nut 9, a rotating starting stop block 32 and a rotating ending stop block 33 are arranged on the nut 9, the rotor assembly 7 can rotate 90 degrees at the rotating starting stop block 32 and the rotating ending stop block 33, and the rotor assembly 7 only drives the valve core 10 to rotate around the central axis thereof without axial movement;
the valve core 10 is machined by stainless steel and comprises five sections, wherein the first section is fixedly connected with the rotor assembly 7 in a welding mode, the second section is matched with the pre-tightening spring 14, the third section is in clearance fit with the first valve core seat 8, the fourth section is in interference fit with a sealing ring 22 of a channel pipe joint 19, and the fifth section is in clearance fit with the second valve core seat 13;
the fourth section of the valve core 10 is arranged to be spherical, the center of the spherical valve core 10 is positioned at the central shaft of the rotor assembly 7, the valve core 10 is provided with two channels (namely a first channel for realizing full communication and a second channel for throttling), the two channels are layered up and down in space and are not mutually isolated and communicated, the channel at the upper layer is a semicircular hole 15 with a large caliber, the channel at the lower layer is a small caliber and is shaped like a Chinese character 'ren' (funnel), one side of the circular channel (circular hole) 17 with a small caliber is arranged at the lower layer, the other side of the circular channel (circular hole) 16 with the same diameter as the circular hole is arranged at the other side of the circular channel, the through flow area from the side of the waist-shaped hole 16 to the side of the circular channel 17 is gradually reduced, and the throttling control effect can be realized; the diameter of the upper layer semicircular hole 15 is 6-8mm, and the diameter of the lower layer circular channel 17 is 1.5-1.8 mm;
the valve seat assembly comprises a valve seat 12, a first channel pipe joint 3, a second channel pipe joint 4, a third channel pipe joint 5 and a fourth channel pipe joint 6;
4 threaded holes and 4 stepped limiting holes are arranged on the periphery of the valve seat 12, the 4 threaded holes are mutually perpendicular to form a 90-degree angle and are respectively connected with 4 channel pipe joints 19 through threads 18; the top of the valve seat 12 is provided with 1 threaded hole and 1 stepped limiting hole, and the threaded hole and the valve core part shown in the attached figure 5 are connected through threads; the bottom of the valve seat 12 is provided with a valve core 10 mounting hole, a second valve core seat 13 is arranged in the mounting hole, and the second valve core seat 13 is made of polyphenylene sulfide wear-resistant material and is in clearance fit with the fifth section of the valve core 10;
when rotor subassembly 7 carried out axial rotation, first valve core case 8 formed the support rotation effect with nut component 11, and the fifth section of case 10 forms the support rotation effect with second valve core case 13, because nut component 11 and second valve core case 13 all adopt polyphenylene sulfide wear-resistant material, have good self-lubricating effect.
The channel pipe joint 19 and the valve seat 12 are sealed through a pipe joint sealing ring 24 (O-shaped ring), a sealing ring 25 is provided with a spherical sealing surface 26 to realize sealing with a fourth section ball valve of the valve core 10, the size of the sphere is consistent with that of the fourth section of the valve core 10, the sealing ring 25 is made of polytetrafluoroethylene materials with good sealing performance and wear resistance, and the sealing ring 25 and the fourth section of the valve core 10 are in interference fit; the sealing ring 25 and the channel pipe joint 19 are sealed through an O-shaped ring 27; a process hole 22 convenient to mount is formed in the outer portion of the valve seat assembly, a customized tool is inserted into the process hole 22, so that the channel pipe joint 19 and the valve seat 12 are mounted on the valve seat assembly 2 through threads 18, and meanwhile, the positioning is realized by matching with the position of a limiting step 23 of the valve seat 12, so that the throttling hole is aligned with the channel hole of the sealing ring;
the inside of the channel pipe joint 19 is provided with an orifice for realizing the corresponding flow demand, and the size and the shape of the orifice can be set to form the customized throttling effect;
when the coil assembly 1 drives the rotor assembly 7 to rotate, when the rotor assembly 7 is close to the rotation starting stop 32 of the nut assembly 11, the semicircular channel orifice 20, the semicircular channel 21 of the sealing ring and the semicircular channel 15 on the upper layer of the fourth section of the valve core are communicated, the channel on the lower layer of the fourth section of the valve core 10 is not communicated, and at the moment, the large-caliber full-circulation state is realized;
when the coil assembly 1 drives the rotor assembly 7 to rotate, when the rotor assembly 7 is close to the rotation stop block 33 of the nut assembly 11, the waist-shaped channel throttling hole 28, the waist-shaped channel 29 of the sealing ring, the circular channel throttling hole 30, the waist-shaped channel 16 of the lower layer of the fourth section of the valve core in the shape of the Chinese character 'ren', the circular channel 17 of the lower layer of the fourth section of the valve core in the shape of the Chinese character 'ren' are communicated, the channel of the upper layer of the fourth section of the valve core 10 is not communicated, and at the moment, the small-caliber throttling state is realized;
when the coil assembly 1 drives the rotor assembly 7 to rotate, in the process from the rotation start stop 32 to the rotation end stop 33, the flow area of the kidney-shaped hole 16 at the lower layer of the fourth section of the valve core 10 and the kidney-shaped hole 29 of the passage pipe joint 19 is gradually increased from zero, so that the effect of controlling throttling is realized.
It should be understood that the above-mentioned embodiments are merely exemplary of the present invention, and not restrictive, and that any modifications, combinations, substitutions, improvements, etc. made within the spirit and scope of the present invention are included in the present invention.
Claims (10)
1. The utility model provides a full-through throttle electronic expansion valve, includes valve seat assembly and case part, the case part connect in on the valve seat assembly, the case part includes the rotor and the case of coaxial rigid coupling, the valve seat assembly includes the disk seat, be provided with the valve pocket in the disk seat, its characterized in that: the valve core is a sphere, the shape of the valve cavity corresponds to that of the valve core, a first flow passage which is perpendicular to the central axis of the rotor and used for realizing full communication and a second flow passage which is used for throttling are arranged on the valve core, the first flow passage and the second flow passage are arranged in parallel, a first passage which is used for only communicating the first flow passage and a second passage which is used for only communicating the second flow passage are arranged on the valve seat, and the first passage and the second passage are arranged in perpendicular.
2. The all-pass electronic expansion valve according to claim 1, wherein: the cross section of the first flow channel, which is perpendicular to the central axis of the first flow channel, is semicircular, and the diameter of the semicircle is 6-8 mm.
3. The all-pass electronic expansion valve according to claim 1, wherein: the second flow passage comprises a convergence flow passage and a linear flow passage which are communicated with each other, the cross section of the convergence flow passage, which is perpendicular to the central axis of the convergence flow passage, is in the shape of a kidney-shaped hole, the cross section of the convergence flow passage, which is parallel to the central axis of the convergence flow passage, is in the shape of a fan, the cross section of the linear flow passage, which is perpendicular to the central axis of the linear flow passage, is in the shape of a circular hole, the circular hole corresponds to the width of the kidney-shaped hole, and the diameter of the circular hole is 1.5-1.8 mm.
4. The all-pass electronic expansion valve according to claim 3, wherein: the communication position of the convergence flow channel and the straight flow channel is positioned in the center of the valve core.
5. The all-pass electronic expansion valve according to claim 1, wherein: the first passage comprises a through hole which is formed in the valve body and communicated with the valve cavity, a passage pipe joint is connected to the through hole in a threaded mode, a pipeline connecting groove is coaxially arranged on one side end face of the passage pipe joint, a sealing ring mounting groove is coaxially arranged on the other side end face of the passage pipe joint, the pipeline connecting groove and the sealing ring mounting groove are communicated through a first throttling hole, a sealing ring is arranged in the sealing ring mounting groove, the end face, facing the valve cavity, of the sealing ring is a spherical sealing face corresponding to the valve core, and a second throttling hole which is used for communicating the first flow passage and the first throttling hole is formed in the sealing ring.
6. The all-pass electronic expansion valve according to claim 1, wherein: the second passageway including set up in on the valve body with the through hole of valve pocket intercommunication, threaded connection has the passageway coupling on the through hole, the coaxial sealing ring mounting groove that is provided with on the coaxial pipeline spread groove that is provided with on the terminal surface of one side of passageway coupling, the opposite side terminal surface, the pipeline spread groove with through third orifice intercommunication between the sealing ring mounting groove, be provided with the sealing ring in the sealing ring mounting groove, the sealing ring is towards the terminal surface of valve pocket for the spherical sealed face corresponding with the case, offer on the sealing ring and be used for switching on the second runner with the third leads the fourth orifice of throttle.
7. The all-pass electronic expansion valve according to claim 5 or 6, wherein: the shape and the arrangement position of the second throttle hole correspond to those of the first throttle hole; the shape and the arrangement position of the third orifice correspond to those of the fourth orifice.
8. The all-pass electronic expansion valve according to claim 5 or 6, wherein: the sealing ring is detachably connected with the channel pipe joint through a screw, and the sealing ring is connected with the valve core in an interference fit manner.
9. The all-pass electronic expansion valve according to claim 5 or 6, wherein: and the outer peripheral surface of the channel pipe joint is provided with a limiting step.
10. The all-pass electronic expansion valve according to claim 1, wherein: the valve core comprises a first shaft section, a second shaft section, a third shaft section, a ball section and a fifth shaft section, wherein the first shaft section is coaxially arranged and used for being connected with a rotor of the valve core component, the second shaft section is used for being matched with a pre-tightening spring in the valve core component, the third shaft section is used for being matched and guided with a first valve core seat in the valve core component, the ball section is matched with a valve cavity in a valve seat, and the fifth shaft section is used for being matched with a second valve core seat in the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110809536.8A CN113606360A (en) | 2021-07-15 | 2021-07-15 | Full-through throttling electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110809536.8A CN113606360A (en) | 2021-07-15 | 2021-07-15 | Full-through throttling electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113606360A true CN113606360A (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110809536.8A Pending CN113606360A (en) | 2021-07-15 | 2021-07-15 | Full-through throttling electronic expansion valve |
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| Country | Link |
|---|---|
| CN (1) | CN113606360A (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE767865A (en) * | 1970-05-28 | 1971-11-29 | Whitey Research Tool Co | ADVANCED BALL VALVES |
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