CN113606360B - All-pass throttling electronic expansion valve - Google Patents
All-pass throttling electronic expansion valve Download PDFInfo
- Publication number
- CN113606360B CN113606360B CN202110809536.8A CN202110809536A CN113606360B CN 113606360 B CN113606360 B CN 113606360B CN 202110809536 A CN202110809536 A CN 202110809536A CN 113606360 B CN113606360 B CN 113606360B
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- sealing ring
- throttling
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- 239000008358 core component Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 57
- 238000004891 communication Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003507 refrigerant Substances 0.000 description 7
- 239000000306 component Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 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
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
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)
- Lift Valve (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, wherein the valve core component is connected to the valve seat assembly, the valve core component 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 rotor, 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 channel which is perpendicular to the central axis of the rotor and is used for realizing all-pass and a second flow channel which is used for throttling are arranged on the valve core, the first flow channel and the second flow channel are mutually parallel, a first channel which is used for only conducting the first flow channel and a second channel which is used for only conducting the second flow channel are arranged on the valve seat, and the first channel and the second flow channel are mutually perpendicular. The invention has compact structure and 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
The electronic expansion valve has been applied to household, commercial and vehicular air conditioners, in the prior art, the electronic expansion valve generally adopts a structure that a rotor of a stepping motor is connected with a valve core, radial rotation is converted into axial movement through screw transmission, and the rotor drives and follows the valve core to move radially together while rotating. The one-way throttling control is realized through the opening and closing of the valve core and the valve core seat.
At present, the heat pump type electric air conditioning system of the new energy automobile is formed by connecting an electric scroll compressor, an electronic expansion valve and a bypass electromagnetic valve in parallel, when the interior of a carriage is refrigerated and an external condenser is heated, in order to realize the large-flow of the 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 heats and the external condenser is used as an evaporator, and the 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 high, the space occupied by the whole system in the automobile is large, and in a narrow engine room of an automobile engine, the assembly and the installation of refrigeration fittings are difficult, and the debugging is inconvenient. In addition, the structure has more connecting points, the pipeline is a hard connecting pipe, the rigidity is high, and the risk of cold leakage is increased.
The specification of the Chinese patent CN110360364A discloses a full-flow electronic expansion valve, which comprises a valve seat component and a valve core component, wherein the valve core component is connected to the valve seat component, the valve seat component comprises a valve seat, the valve seat comprises a valve cavity, a first channel and a second channel, the valve cavity comprises an upper cavity, a middle cavity and a lower cavity, the upper cavity is communicated with the second channel, the lower cavity is communicated with the first channel, the upper cavity is communicated with or separated from the middle cavity through the valve core component, a piston component which is communicated with or separated from the lower cavity and the second channel is arranged in the valve cavity, the piston component is positioned between the middle cavity and the lower cavity, and an orifice which is communicated with the middle cavity and the lower cavity is arranged on the piston component. The invention integrates the functions of a conventional electronic expansion valve and an electromagnetic valve through an integrated parallel structure, but the valve seat structure is complex and inconvenient to process and manufacture.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the all-pass throttling electronic expansion valve which is compact in structure and can realize 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, wherein the valve core component is connected to the valve seat assembly, the valve core component 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 rotor, 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 channel which is perpendicular to the central axis of the rotor and is used for realizing all-pass and a second flow channel which is used for throttling are arranged on the valve core, the first flow channel and the second flow channel are mutually parallel, a first channel which is used for only conducting the first flow channel and a second channel which is used for only conducting the second flow channel are arranged on the valve seat, and the first channel and the second channel are mutually perpendicular.
In a preferred embodiment of the present invention, the first flow passage has a semicircular shape in cross section perpendicular to its central axis, and the semicircular shape has a diameter of 6 to 8mm.
In a preferred embodiment of the present invention, the second flow path includes a converging flow path and a straight flow path which are communicated with each other, a cross-sectional shape of the converging flow path perpendicular to the central axis thereof is a waist-shaped hole, a cross-sectional shape of the converging flow path parallel to the central axis thereof is a fan shape, a cross-sectional shape of the straight flow path perpendicular to the central axis thereof is a circular hole corresponding to a width of the waist-shaped hole, and a diameter of the circular hole is 1.5-1.8mm.
In a preferred embodiment of the present invention, the connection between the converging flow passage and the straight flow passage is located at the center of the valve core.
In a preferred embodiment of the invention, the first channel comprises a through hole which is arranged on the valve body and communicated with the valve cavity, a channel pipe joint is connected to the through hole in a threaded manner, a pipeline connecting groove is coaxially arranged on one side end surface of the channel pipe joint, a sealing ring mounting groove is coaxially arranged on the other side end surface of the channel pipe joint, the pipeline connecting groove is communicated with the sealing ring mounting groove through a first throttling hole, a sealing ring is arranged in the sealing ring mounting groove, the end surface of the sealing ring facing the valve cavity is a spherical sealing surface corresponding to the valve core, and a second throttling hole for conducting the first flow channel and the first throttling hole is formed in the sealing ring.
In a preferred embodiment of the invention, the second channel comprises a through hole which is arranged on the valve body and communicated with the valve cavity, a channel pipe joint is connected to the through hole in a threaded manner, a pipeline connecting groove is coaxially arranged on one side end surface of the channel pipe joint, a sealing ring mounting groove is coaxially arranged on the other side end surface of the channel pipe joint, the pipeline connecting groove is communicated with the sealing ring mounting groove through a third throttling hole, a sealing ring is arranged in the sealing ring mounting groove, the end surface of the sealing ring facing the valve cavity is a spherical sealing surface corresponding to the valve core, and a fourth throttling hole for conducting the second flow channel and the third throttling hole is formed in the sealing ring.
In a preferred embodiment of the present invention, the shape and arrangement position of the second orifice corresponds to the shape and arrangement position of the first orifice; the shape and arrangement position of the third orifice corresponds to the shape and arrangement position of the fourth orifice.
In a preferred embodiment of the invention, the sealing ring is detachably connected with the channel pipe joint by a screw, and the sealing ring is connected with the valve core in an interference fit manner.
In a preferred embodiment of the invention, the outer circumferential surface of the passage pipe joint is provided with a limit step.
In a preferred embodiment of the invention, the valve element comprises a first shaft section coaxially arranged for connection to a rotor of the valve element, a second shaft section for cooperation with a pretensioning spring in the valve element, a third shaft section for cooperation guiding with a first valve element seat in the valve element, a ball section for cooperation with a valve cavity in the valve seat, and a fifth shaft section for cooperation with a second valve element seat in the valve seat
The beneficial effects of the invention are as follows: 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 spherical valve core matched with the first flow passage and the second flow passage on the valve core and the first channel and the second channel on the valve seat, so the heat pump system using the all-pass throttling electronic expansion valve has more compact structure; furthermore, through the structural design of the first flow channel and the second flow channel, the invention realizes two working conditions of full-through and throttling, has simple structure and is convenient to manufacture and assemble; furthermore, by structural design of the valve seat, the valve core can be quickly and accurately switched between the full-through working condition and the throttling working condition through rotor driving, so that the sealing effect is good, and the control strategy is simple; furthermore, the first channel and the second channel are designed to be in a form of through holes 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 is better; furthermore, the invention facilitates the positioning and the installation of the pipe joint by arranging the limiting step on the peripheral surface of the pipe joint; furthermore, the valve core is designed into a five-section structure to be integrally formed, so that the valve core is more beneficial to assembly.
Drawings
FIG. 1 is an exemplary simple heat pump system application scenario;
FIG. 2 is a first axial view of an all-pass throttle electronic expansion valve according to the present embodiment;
FIG. 3 is a second axial view of an all-pass throttling electronic expansion valve according to the present embodiment;
FIG. 4 is a cross-sectional view of a valve body assembly of an all-pass throttling electronic expansion valve according to the present embodiment;
FIG. 5 is a spool shaft view of an all-pass throttling electronic expansion valve according to this embodiment;
FIG. 6 is an axial view of a valve element part of the full-flow throttling electronic expansion valve;
FIG. 7 is an axial view of first and third pipe joints of an all-pass throttle electronic expansion valve according to the present embodiment;
FIG. 8 is a cross-sectional view of a first, third, passage pipe joint of an all-pass throttling electronic expansion valve in accordance with the present embodiment;
FIG. 9 is an axial view of a fourth pipe joint of the all-pass throttle electronic expansion valve of the present embodiment;
FIG. 10 is a cross-sectional view of a fourth passage pipe joint of the all-pass throttle electronic expansion valve of the present embodiment;
FIG. 11 is an axial view of a second passage pipe joint of the all-pass throttle electronic expansion valve of the present embodiment;
FIG. 12 is a cross-sectional view of a second passage coupling of the all-pass throttling electronic expansion valve of the present embodiment;
FIG. 13 is a nut axial view of an all-pass throttling electronic expansion valve according to this embodiment;
FIG. 14 is a cross-sectional view of the fourth stage upper layer passage of the valve cartridge of the present embodiment (rotation start position);
FIG. 15 is a cross-sectional view of the fourth stage lower passage of the spool of the present embodiment (rotation end position);
In the figure: the valve comprises a 1-coil assembly, a 2-valve body assembly, a 3-first channel pipe joint, a 4-second channel pipe joint, a 5-third channel pipe joint, a 6-fourth channel pipe joint, a 7-rotor assembly, an 8-first valve core seat, a 9-nut, a 10-valve core, an 11-nut assembly, a 12-valve seat, a 13-second valve core seat, a 14-pretension spring, a 15-semicircular channel, a 16-waist-shaped channel, a 17-circular channel, a 18-thread, a 19-pipe joint, a 20-semicircular channel orifice, a semicircular channel of a 21-sealing ring, a 22-mounting process hole, a 23-limit step, a 24-pipe joint sealing ring, a 25-sealing ring, a 26-spherical sealing surface, a 27-sealing ring, a 28-waist-shaped channel orifice, a 29-sealing ring waist-shaped channel orifice, a 30-circular channel orifice, a 31-sealing ring circular channel, a 32-rotation starting stop and a 33-rotation stopping stop.
Detailed Description
The following describes the invention in further detail, including preferred embodiments, by way of the accompanying drawings and by way of examples of some alternative embodiments of the invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Referring to the simple heat pump system of fig. 1, when the interior of the carriage is refrigerated and the external condenser is heated, in order to realize the large-flow of the refrigerant, the electromagnetic valve with a large bypass caliber is opened at the moment, and the electronic expansion valve with a small caliber is closed; when the interior of the carriage heats and the external condenser is used as an evaporator, the refrigerant in the system needs to realize throttling when flowing, the large-caliber electromagnetic valve is closed, and the small-caliber electronic expansion valve controls the flow of the refrigerant.
In order to solve the technical problems, the invention discloses an all-through throttling electronic expansion valve for a vehicle, which can replace 1 electromagnetic valve and 1 electronic expansion valve to realize the large-flow circulation and small-flow throttling effect;
the full-through throttling electronic expansion valve shown in the attached drawing of the specification mainly comprises the following three parts:
1. and (3) a coil assembly: is arranged outside the valve core component (provides a magnetic field for the rotor to form radial rotary motion);
2. valve core component (detachably mounted on valve seat assembly through threaded connection):
1) A rotor assembly: the device comprises a rotor (which is arranged on a nut in a matched manner through a groove tooth and forms circumferential rotary motion with a coil assembly), a valve core (which is driven to rotate by the rotor), a first valve core seat and a pre-tightening spring;
2) And (3) a nut assembly: the valve seat assembly comprises a nut (the rotor assembly is matched with the groove teeth, and the nut is fixed on the valve seat assembly through the screw thread installation at the bottom of the nut assembly);
3) Sleeve pipe: the sleeve wraps the rotor assembly and the nut assembly and can be installed and inserted into the coil assembly hole;
3. Valve seat assembly: (removably mounting the spool piece by threaded connection);
1) Valve seat: 4 threaded holes and 4 stepped limiting holes are formed in the periphery, 1 threaded hole and 14 stepped limiting hole are formed in the top of the valve body, and a valve core mounting hole is formed in the bottom of the valve body;
2) Channel pipe joint: the sealing device comprises a pipe joint, an orifice, an installation process hole, a limiting step, a channel pipe joint sealing ring, a sealing ring and a sealing ring;
the full-through throttling electronic expansion valve in the embodiment comprises a valve body assembly 2 and a coil assembly 1 arranged 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 component shown in figure 6, wherein the valve core component is arranged on the valve seat assembly through threads and limited through a stepped hole; the spool assembly shown in fig. 6 includes a rotor assembly 7 and a nut assembly 11;
The rotor assembly 7 is internally provided with a valve core 10 and a rotor which are coaxially arranged, the rotor is sleeved and fixedly connected to 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 in a welding mode through a fixing part of a nut assembly 11, the rotor is fixedly connected with the valve core 10 in a welding mode, an axial rotation space exists between the rotor and the nut 9, the nut 9 is provided with a rotation start stop block 32 and a rotation end stop block 33, the rotor assembly 7 can rotate 90 degrees at the rotation start stop block 32 and the rotation end stop block 33, and the rotor assembly 7 only drives the valve core 10 to rotate around the central axis and does not axially move;
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 clearance fit with the sealing ring 22 of the 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 in a sphere shape, the center of the sphere-shaped 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 flow channel for realizing full communication and a second flow channel for throttling), the two channels are layered up and down in space and are isolated from each other and are not communicated, the channel at the upper layer is a semicircular hole 15 with a large caliber, the channel at the lower layer is small caliber and is in a herringbone shape (funnel shape), one side is a circular channel (circular hole) 17 with a small caliber, the other side is a waist-shaped hole 16 with the same diameter as the circular hole, and the flow area from the side of the waist-shaped hole 16 to the side of the circular channel 17 is gradually reduced, so that a throttling control effect can be realized; the diameter of the upper semicircular hole 15 is 6-8mm, and the diameter of the lower circular channel 17 is 1.5-1.8mm;
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 formed in the periphery of the valve seat 12, the 4 threaded holes are mutually perpendicular to form 90 degrees, and the 4 threaded holes 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 which are connected with the valve core component shown in figure 5 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 a fifth section of the valve core 10;
when the rotor assembly 7 axially rotates, the first valve core seat 8 and the nut assembly 11 form a supporting rotation function, and the fifth section of the valve core 10 and the second valve core seat 13 form a supporting rotation function, and as the nut assembly 11 and the second valve core seat 13 are made of polyphenylene sulfide wear-resistant materials, the self-lubricating valve has a 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), the sealing ring 25 is provided with a spherical sealing surface 26 and is sealed with a fourth section ball valve of the valve core 10, the spherical size is consistent with that of the fourth section ball valve of the valve core 10, the sealing ring 25 is made of polytetrafluoroethylene material with good sealing performance and good wear resistance, and the sealing ring 25 is in interference fit with the fourth section ball valve of the valve core 10; the sealing ring 25 and the channel pipe joint 19 are sealed by an O-shaped ring 27; the outside is provided with a process hole 22 convenient to install, a custom tool is inserted into the process hole 22 to enable the channel pipe joint 19 and the valve seat 12 to be installed on the valve seat assembly 2 through the threads 18, and meanwhile, the positioning is realized through matching with the position of the limit step 23 of the valve seat 12, so that the channel holes of the throttling hole and the sealing ring are aligned;
The inside of the channel pipe joint 19 is provided with an orifice for realizing corresponding flow requirements, and the size and the shape of the orifice can be set to form a 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 block 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, and the channel on the lower layer of the fourth section of the valve core 10 is not communicated, and is in a large-caliber full-flow state at the moment;
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-stage herringbone channel of the valve core fourth section, the circular channel 17 of the lower-stage herringbone channel of the valve core fourth section are communicated, and the channel of the upper-stage of the valve core 10 is not communicated, so that the valve core is in a small-caliber throttling state;
When the coil assembly 1 drives the rotor assembly 7 to rotate, the flow area between the waist-shaped hole 16 of the fourth lower section of the valve core 10 and the waist-shaped hole 29 of the channel pipe joint 19 is gradually increased from zero in the process of rotating from the rotation start stop block 32 to the rotation end stop block 33, so that the throttling control effect is realized.
It should be understood that the foregoing is only illustrative of the present invention and is not intended to limit the present invention, but is to be construed as including any modification, combination, replacement, improvement, etc. which fall within the spirit and principles of the present invention.
Claims (6)
1. The utility model provides an all-through throttle electronic expansion valve, includes disk seat assembly and case part, the case part connect in on the disk seat assembly, the case part includes rotor and the case of coaxial rigid coupling, the disk 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 and a second flow passage are arranged on the valve core, the first flow passage and the second flow passage are perpendicular to the central axis of the rotor and used for realizing full communication, the first flow passage and the second flow passage are arranged in parallel, a first passage and a second passage are arranged on the valve seat, the first passage and the second passage are used for only conducting the first flow passage, and the first passage and the second passage are perpendicular to each other; the cross section of the first flow channel perpendicular to the central axis is semicircular, and the diameter of the semicircle is 6-8mm; the second flow passage comprises a converging flow passage and a straight flow passage which are communicated with each other, the cross section of the converging flow passage perpendicular to the central axis is a waist-shaped hole, the cross section of the converging flow passage parallel to the central axis is a fan-shaped, the cross section of the straight flow passage perpendicular to the central axis is a circular hole, the circular hole corresponds to the width of the waist-shaped hole, and the diameter of the circular hole is 1.5-1.8mm; the first channel comprises a through hole which is arranged on the valve seat and communicated with the valve cavity, a channel pipe joint is connected to the through hole in a threaded manner, a pipeline connecting groove is coaxially arranged on one side end face of the channel pipe joint, a sealing ring mounting groove is coaxially arranged on the other side end face of the channel pipe joint, the pipeline connecting groove is communicated with the sealing ring mounting groove through a first throttling hole, a sealing ring is arranged in the sealing ring mounting groove, the end face of the sealing ring, facing the valve cavity, is a spherical sealing surface corresponding to the valve core, and a second throttling hole for conducting the first flow channel and the first throttling hole is formed in the sealing ring; the second channel comprises a through hole which is arranged on the valve seat and communicated with the valve cavity, a channel pipe joint is connected to the through hole in a threaded manner, a pipeline connecting groove is coaxially arranged on one side end face of the channel pipe joint, a sealing ring mounting groove is coaxially arranged on the other side end face of the channel pipe joint, the pipeline connecting groove is communicated with the sealing ring mounting groove through a third throttling hole, a sealing ring is arranged in the sealing ring mounting groove, the end face of the sealing ring, facing the valve cavity, is a spherical sealing surface corresponding to the valve core, and a fourth throttling hole for conducting the second channel and the third throttling hole is formed in the sealing ring.
2. The all-through throttling electronic expansion valve according to claim 1, characterized in that: the communication position of the convergent flow passage and the linear flow passage is positioned at the sphere center of the valve core.
3. The all-through throttling electronic expansion valve according to claim 1, characterized in that: the shape and arrangement position of the second orifice correspond to those of the first orifice; the shape and arrangement position of the third orifice corresponds to the shape and arrangement position of the fourth orifice.
4. The all-through throttling electronic expansion valve according to claim 1, characterized in that: 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 mode.
5. The all-through throttling electronic expansion valve according to claim 1, characterized in that: and a limiting step is arranged on the outer peripheral surface of the channel pipe joint.
6. The all-through throttling electronic expansion valve according to claim 1, characterized in that: the valve core comprises a first shaft section, a second shaft section, a third shaft section, a sphere section and a fifth shaft section, wherein the first shaft section is coaxially arranged and used for being connected with a rotor of a 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 sphere 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 CN113606360B (en) | 2021-07-15 | 2021-07-15 | All-pass throttling electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110809536.8A CN113606360B (en) | 2021-07-15 | 2021-07-15 | All-pass throttling electronic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113606360A CN113606360A (en) | 2021-11-05 |
| CN113606360B true CN113606360B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110809536.8A Active CN113606360B (en) | 2021-07-15 | 2021-07-15 | All-pass throttling electronic expansion valve |
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| Country | Link |
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| CN (1) | CN113606360B (en) |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA938275A (en) * | 1970-05-28 | 1973-12-11 | Matousek Stephen | Ball valve and improved seat arrangement |
| US20050092002A1 (en) * | 2000-09-14 | 2005-05-05 | Wightman David A. | Expansion valves, expansion device assemblies, vapor compression systems, vehicles, and methods for using vapor compression systems |
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