WO2024154435A1 - 電磁弁 - Google Patents
電磁弁 Download PDFInfo
- Publication number
- WO2024154435A1 WO2024154435A1 PCT/JP2023/042065 JP2023042065W WO2024154435A1 WO 2024154435 A1 WO2024154435 A1 WO 2024154435A1 JP 2023042065 W JP2023042065 W JP 2023042065W WO 2024154435 A1 WO2024154435 A1 WO 2024154435A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solenoid
- pipe
- mounting hole
- valve
- main valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
- F16K31/408—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston the discharge being effected through the piston and being blockable by an electrically-actuated member making contact with the piston
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- 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
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- 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
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- 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
- F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/13—Vibrations
Definitions
- This disclosure relates to solenoid valves.
- JP 2014-152848 A discloses a solenoid valve with a differential pressure valve for use in a heat pump cycle.
- the main valve seat is open when the solenoid is not energized, and when the solenoid is energized (ON), the movable iron core is attracted to the fixed iron core, the plunger descends, and the main valve body closes the main valve seat.
- Pulse width modulation (PWM) control is sometimes used to control solenoid valves in order to save power.
- PWM control is a method of controlling the power applied to the load by fixing the frequency of a square wave and varying the proportion of time that the voltage is high (duty ratio), and is also called duty control.
- the purpose of this disclosure is to suppress the generation of noise and vibration in solenoid valves.
- the solenoid valve includes a solenoid having a coil wound thereon, an attractor disposed inside the solenoid, a plunger connected to a valve body and attracted to the attractor when current is applied to the solenoid, a pipe disposed inside the solenoid and accommodating the plunger, a first support portion disposed overlapping one axial end of the solenoid, and a second support portion disposed overlapping the other axial end of the solenoid, a first mounting hole and a second mounting hole into which the pipe is fitted, respectively, are formed in the first support portion and the second support portion, and the first mounting hole abuts against one radial side of the outer periphery of the pipe.
- a first mounting hole and a second mounting hole are formed in the housing, into which the pipe that houses the plunger is respectively fitted.
- the first mounting hole abuts one side of the outer periphery of the pipe in the radial direction.
- the pipe is constrained to the housing in the radial direction. This suppresses vibration of the pipe even if the plunger rapidly attaches to and detaches from the suction element when the solenoid is PWM controlled.
- the first mounting hole and the second mounting hole have the same diameter, and the center of the first mounting hole and the center of the second mounting hole are offset in the radial direction of the pipe.
- the centers of the first and second mounting holes which have the same diameter, are offset from each other in the radial direction of the pipe, so that when the pipe is inserted into the first and second mounting holes, one radial side of the outer periphery of the pipe abuts against the first mounting hole.
- the first mounting hole and the second mounting hole have the same diameter.
- the housing has a plate-shaped connecting portion that connects the first support portion and the second support portion, and the first mounting hole abuts against the outer periphery of the pipe on one side in a direction parallel to the connecting portion.
- the fifth aspect is a solenoid valve according to any one of the first to fourth aspects, in which the second mounting hole abuts against the other radial side of the outer periphery of the pipe.
- FIG. 1 is a cross-sectional view showing an expansion valve including a solenoid valve according to an embodiment of the present invention.
- FIG. 2 is an enlarged cross-sectional view showing the solenoid valve according to the embodiment.
- FIG. 2 is a perspective view showing a configuration of a part of the solenoid valve according to the embodiment.
- FIG. FIG. 1 is a cross-sectional view showing an expansion valve including a solenoid valve according to an embodiment of the present invention.
- FIG. 2 is an enlarged cross-sectional view showing the solenoid valve according to the embodiment.
- FIG. 2 is a perspective view showing a configuration of a part of the solenoid valve according to the embodiment.
- a solenoid valve 100 according to this embodiment is attached to an expansion valve 200 of a refrigeration cycle of an automotive air conditioner, for example.
- the solenoid valve 100 has a solenoid 70, an attractor 80, a plunger 50, a pipe 51, and a housing 70c.
- the solenoid 70 is a member around which a coil 70a is wound and which generates a magnetic force when electricity is applied.
- the coil 70a is provided with, for example, a connection terminal 72 ( Figure 3).
- the attractor 80 is a magnetic body disposed inside the solenoid 70, for example a movable iron core.
- the plunger 50 is connected to a valve shaft 60, which is an example of a valve body, and is attracted to the attractor 80 when electricity is applied to the solenoid 70.
- the pipe 51 is provided inside the solenoid 70 and is a bottomed member that houses the plunger 50.
- the solenoid valve 100 controls the opening and closing of the flow of fluid between a fluid inlet (not shown) and outlet 32 in the expansion valve 200 by opening and closing the main valve section 10.
- the inlet and outlet 32 are formed in a valve main body 30 serving as a valve body, and a main valve chamber 33 is provided between the inlet and outlet 32.
- the main valve chamber 33 is connected to the inlet.
- the main valve body 40 is housed within the main valve chamber 33 so as to be slidable in the axial direction (the up and down direction in FIG. 2; hereinafter, sometimes simply referred to as "up and down").
- the valve main body 30 is made of a metal member such as aluminum, an aluminum alloy, or brass.
- the main valve body 40 has a main valve member 43 and a main valve packing 41.
- the main valve member 43 is made of a metal material such as aluminum, stainless steel, or brass.
- the main valve body 40 is supported inside the main valve chamber 33 of the valve body 30 so that it can slide along the axial direction.
- the main valve section 10 is disposed below the main valve body 40 in FIG. 2, i.e., on one side in the sliding direction.
- the main valve section 10 is composed of the main valve body 40 and a main valve seat 35 formed between the inlet and outlet 32 of the valve body 30.
- a packing section that opens and closes the main valve seat 35 is provided on the underside of the main valve packing 41 of the main valve body 40.
- a pilot valve portion 20 is configured on the other side of the sliding direction of the main valve body 40 (upper side in the illustrated embodiment).
- a pilot valve seat 42 is provided on the upper surface of the main valve packing 41. The pilot valve seat 42 is opened and closed by the pilot valve portion 20 formed at the tip (the tip opposite the head 62).
- the pilot valve packing which is the portion in FIG. 2 where the pilot valve seat 42 is provided, is not essential, and the pilot valve seat portion may be formed directly on the main valve member 43, and the packing portion on the lower side may be attached to the main valve member 43.
- the packing portion that opens and closes the lower main valve seat 35 and the portion where the pilot valve seat 42 is provided on the upper side may each be attached to the main valve member 43 as separate members.
- a pilot passage 45 extending along the axial direction is formed in the vertical center of the main valve body 40.
- a pilot valve seat 42 is provided at the upper end of the pilot passage 45 in FIG. 2.
- a cylindrical main valve member 43 fits onto the outer surface of the main valve packing 41.
- a pilot passage 45 is formed in the main valve packing 41.
- the main valve body 40 also has a pressure equalizing hole (not shown), which is a through hole extending along the axial direction.
- the pressure equalizing hole connects the main valve chamber 33 and the pilot valve chamber 34.
- the pressure equalizing hole equalizes the pressure in the main valve chamber 33 and the pilot valve chamber 34, allowing the main valve body 40 to be opened and closed easily.
- a pipe 51 that is open downward is disposed in the center of the upper part of the solenoid valve 100.
- the pipe 51 is a cylindrical member having a ceiling and a side wall. The end of the side wall of the pipe 51 opposite the ceiling is attached to the suction element 80. Specifically, the lower end of the pipe 51 in FIG. 2 is open, and can be fixed to the suction element 80 (described later) by appropriate means such as crimping or welding.
- the plunger 50 is housed inside the pipe 51.
- the plunger 50 is a cylindrical member having a bottom 50a and a side wall 50b.
- the bottom 50a of the plunger 50 is located on the side of the pilot valve seat 42.
- a through hole 50c is formed in the bottom 50a.
- the plunger 50 is made of, for example, magnetic stainless steel.
- the material of the plunger is not limited to stainless steel, but is a magnetic material.
- the plunger 50 is provided inside the pipe 51 so that it can slide freely along the axial direction by the operation of the solenoid 70.
- the pilot valve seat 42 is opened and closed by the valve shaft 60.
- the valve shaft 60 has a head 62 and a shaft portion 63.
- the pilot valve portion 20 is provided at the tip of the shaft portion 63 (the tip portion opposite the head 62).
- the head 62 of the valve shaft 60 is disposed inside the plunger 50.
- the head 62 has a larger diameter than the shaft portion 63 in the radial direction of the valve shaft 60.
- the diameter of the shaft portion 63 is slightly smaller than the diameter of the through hole 50c of the plunger 50. Therefore, when the shaft portion 63 is inserted into the through hole 50c of the plunger 50, it protrudes from the bottom portion 50a outside the plunger 50 toward the valve seat.
- a spring 44 is provided between the ceiling of the pipe 51 and the head 62 of the valve shaft 60.
- the valve shaft 60 is pressed against the plunger 50 by the elastic force of the spring 44 provided, for example, inside the pipe 51.
- the plunger 50 slides up and down inside the pipe 51 together with the valve shaft 60 due to the operation of the solenoid 70.
- An attractor 80 is provided as a means for driving the plunger 50 by the operation of the solenoid 70.
- the attractor 80 is, for example, a magnetic material, and when electricity is applied to the solenoid 70 by an appropriate control means (not shown), a magnetic field is generated, which overcomes the elastic force of the spring 52 and attracts the magnetic plunger 50 downward.
- the aspirator 80 has a multi-stage cylindrical shape with through holes formed at the top and bottom, and the pipe 51 is attached to it. In this state, the aspirator 80 is inserted or screwed into the upper large diameter hole 30a formed in the valve body 30. Then, a male screw 71 is inserted into a through hole formed in the protruding part 70d of the solenoid 70 inserted into the outer periphery of the pipe 51, and screwed into the female screw formed in the valve body 30, so that the aspirator 80 is pressed and fixed to the valve body 30.
- the cylindrical shape of the aspirator 80 is roughly composed of an upper small diameter part 81 and a lower large diameter part 82. The lower open end of the pipe 51 is fixed to the small diameter part 81, and the large diameter part 82 is fixed to the valve body 30 as described above. The plunger 50 is stored in the pipe 51 fixed to the small diameter part 81 so that it can slide up and down.
- a cylindrical main valve body accommodating portion (space portion) 82a is formed inside the large diameter portion 82 of the suction element 80.
- the main valve body 40 is accommodated in this main valve body accommodating portion 82a so that it can slide up and down.
- the main valve body 40 is lifted upward in the main valve chamber 33 by the elastic force of the main valve body spring 46.
- the space is divided into upper and lower portions by the main valve body 40, so that the lower portion of the space becomes the main valve chamber 33 and the upper portion becomes the pilot valve chamber 34.
- the gap between the large diameter portion 82 of the suction element 80 and the valve body 30 is appropriately sealed with an O-ring 83.
- the small diameter portion 81 and the large diameter portion 82 of the suction element 80 are one member and form an integral cylindrical member with a step between them.
- the small diameter portion 81 and the large diameter portion 82 may be formed from separate members and fixed together by appropriate means (not shown).
- the suction element 80 can attract and drive the plunger 50 when electricity is applied to the solenoid 70.
- the member that drives the plunger 50 by suction and houses the main valve body 40 so that it can slide up and down is referred to as the suction element. It does not matter whether the suction element 80 is formed from one member or multiple members.
- the solenoid 70 is fitted to the outer peripheral surface of the pipe 51.
- This solenoid 70 has a coil 70a, a bobbin 70b, and a housing 70c.
- the coil 70a is wound around the bobbin 70b.
- the housing 70c is made of a magnetic material.
- the housing 70c surrounds the bobbin 70b.
- a protrusion 70d is formed that protrudes outward from the coil 70a on the side opposite the pipe 51.
- the housing 70c has a first support part 91 arranged to overlap one axial end of the solenoid 70, and a second support part 92 arranged to overlap the other axial end of the solenoid 70, and surrounds the coil 70a.
- the housing 70c is formed, for example, in a U-shape by the first support part 91, the second support part 92, and a connecting part 93 that connects the first support part 91 and the second support part 92.
- the first support portion 91 and the second support portion 92 are formed with a first mounting hole 91a and a second mounting hole 92a, into which the pipe 51 is respectively inserted.
- the first support portion 91 is further formed with a notch 91b to suppress interference with the connection terminal 72.
- the second support portion 92 is further provided with two protrusions 70d.
- the protrusions 70d are each formed with a through hole 70e.
- the male screw 71 ( Figure 2) is adapted to be inserted into the through hole 70e.
- the second support portion 92 is also provided with two protrusions 70f for positioning the coil 70a.
- the first mounting hole 91a abuts against one radial side of the outer periphery of the pipe 51.
- the second mounting hole 92a abuts against the other radial side of the outer periphery of the pipe 51.
- the first mounting hole 91a and the second mounting hole 92a are circular and have the same diameter, and the center C1 of the first mounting hole 91a and the center C2 of the second mounting hole 92a are offset in the radial direction of the pipe 51.
- the center C1 of the first mounting hole 91a is offset to the left of the center C2 of the second mounting hole 92a.
- the state in which the second mounting hole 92a abuts against the other radial side of the outer periphery of the pipe 51 includes the state in which the second mounting hole 92a abuts against the suction element 80, as shown in FIG. 2.
- the pipe 51 may be extended downward to surround the outer periphery of the suction element 80. In this case, the second mounting hole 92a abuts against the pipe 51.
- the second support part 92 in which the second mounting hole 92a is formed, is fixed to the valve body 30 by a male screw 71 or the like, so that the first mounting hole 91a abuts against one radial side of the outer periphery of the pipe 51, and the second mounting hole 92a does not abut against the other radial side of the outer periphery of the pipe 51.
- this misalignment is 3 to 9% of the hole diameter. If the misalignment falls below this range, the pipe 51 will not be sufficiently restrained by the housing 70c, making it difficult to suppress vibration. If the misalignment exceeds this range, it will be difficult to fit the pipe 51 into the first mounting hole 91a and the second mounting hole 92a.
- the expansion valve 200 has a structure in which a solenoid valve 100 is attached.
- the structure of the expansion valve 200 is common, so it will be briefly described.
- the expansion valve 200 has a valve body 30, a first passage 11 through which refrigerant passes from the condenser and receiver of the refrigeration cycle to the evaporator, and a second passage 12 through which refrigerant passes from the evaporator to the compressor, which are formed in the valve body 30 and spaced apart from each other above and below.
- the solenoid valve 100 is attached so as to be able to open and close the inlet and outlet 32 of the first passage 11.
- An O-ring 39a is attached to the adjustment screw 39, ensuring an airtight state with the valve body 30.
- the adjustment screw 39 and the pressure spring 32d adjust the opening degree of the valve body 32b relative to the orifice 32a.
- the inlet of the first passage 11 is connected to the main valve portion 10, and when the solenoid valve 100 is open, it is connected to the valve chamber 28 through the passage 26.
- the valve body 30 is formed with a bolt hole 30b for mounting the expansion valve 200 to the installation location.
- the valve body 30 is formed with a small diameter hole 37 and a hole 38 with a larger diameter than the small diameter hole 37, which penetrate the second passage 12 and are coaxial with the orifice 32a, in order to apply a driving force to the valve body 32b to open and close the orifice 32a depending on the outlet temperature of the evaporator.
- a power element part 36 which acts as a heat-sensing part, is fixed to the upper end of the valve body 30.
- the power element section 36 has a heat sensing rod 36f that slides within a large diameter hole 38 and a small diameter hole 37 in response to the displacement of the diaphragm 36a to provide a driving force.
- the top of the heat sensing rod 36f abuts against the underside of the diaphragm 36a, and the bottom end of the heat sensing rod 36f abuts against the valve body 32b.
- the heat sensing rod 36f is a valve body driving rod.
- the valve body driving rod may be configured by arranging multiple heat sensing rods in series.
- FIG. 2 shows a state in which the solenoid 70 (coil 70a) is not energized. In this case, no suction force is generated in the suction element 80, so the plunger 50 is lifted upward in the pipe 51 by the elastic force of the spring 52, and the pilot valve portion 20 is in an open state. In addition, the main valve body 40 is lifted upward in the main valve chamber 33 by the elastic force of the main valve body spring 46, and the main valve portion 10 is in an open state.
- the pilot passage 45 When the pilot passage 45 is closed, the only passage that connects the pilot valve chamber 34 and the main valve chamber 33 is the pressure equalizing hole (not shown), and there is no pressure difference between the two valve chambers.
- the spring 44 further pushes the main valve body 40 downward and slides to its lowest point, the main valve body 40 abuts against the main valve seat 35, closing the main valve section 10. This also closes the main valve section 10, closing the flow path and preventing the flow of refrigerant, etc. from the inlet to the outlet 32.
- the pilot valve chamber 34 is connected to the outlet 32 via the pilot passage 45 provided in the center of the main valve body 40, and the pressure in the pilot valve chamber 34 transitions from high to low pressure.
- the main valve body 40 moves upward and separates from the main valve seat 35, opening the valve.
- the expansion valve 200 controls the flow of the refrigerant, etc.
- a first mounting hole 91a and a second mounting hole 92a are formed in the housing 70c, into which the pipe 51 that houses the plunger 50 is respectively fitted.
- the first mounting hole 91a abuts against one radial side of the outer periphery of the pipe 51
- the second mounting hole 92a abuts against the other radial side of the outer periphery of the pipe 51.
- the pipe 51 is constrained to the housing 70c in the radial direction. This suppresses vibration of the pipe 51 even if the plunger 50 is attached to and detached from the suction element 80 at high speed when the solenoid 70 is PWM controlled.
- the centers C1, C2 of the first mounting hole 91a and the second mounting hole 92a which have the same diameter, are offset from each other in the radial direction of the pipe 51, so that when the pipe 51 is inserted into the first mounting hole 91a and the second mounting hole 92a, one radial side of the outer periphery of the pipe 51 abuts against the first mounting hole 91a, and the other radial side of the outer periphery of the pipe 51 abuts against the second mounting hole 92a.
- vibration of the pipe 51 can be suppressed.
- the solenoid valve 100 can control the opening and closing of the expansion valve 200.
- an improved solenoid valve is provided.
- first mounting hole 91a and the second mounting hole 92a are circular and have the same diameter, the shape is not limited to circular. It is sufficient that the pipe 51 is restrained to the housing 70c by abutting the inner periphery of the first mounting hole 91a and the second mounting hole 92a in a staggered manner.
- the ceiling portion of the pipe 51 may be made of a separate member. In other words, the pipe 51 may be constructed by combining a cylindrical portion and a ceiling portion.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
図1、図2において、本実施形態に係る電磁弁100は、例えば自動車用空調機の冷凍サイクルの膨張弁200に取り付けて用いられる。
図1において、膨張弁200には電磁弁100が取り付けられる構造となっている。膨張弁200の構造は一般的なものであるので、簡単に説明する。膨張弁200は、弁本体30と、冷凍サイクルのコンデンサ、レシーバからエバポレータに向かう冷媒の通る第一の通路11、及びエバポレータからコンプレッサに向かう冷媒の通る第二の通路12が弁本体30に上下に離間して形成されている。電磁弁100は、第一の通路11における流入口と流出口32との間を開閉できるように取り付けられている。
本実施形態は、上記のように構成されており、以下その作用について説明する。ここでは、電磁弁100が冷凍サイクルの膨張弁200に適用されている場合を例にとる。図2は、ソレノイド70(コイル70a)へ通電されていない状態を示している。この場合、吸引子80には吸引力は発生しないから、スプリング52の弾発力により、プランジャ50はパイプ51内を上方に持ち上げられ、パイロット弁部20は開状態とされている。また主弁体40は、主弁体スプリング46の弾発力により主弁室33内で上方に持ち上げられ、主弁部10は開状態とされている。
以上、本開示の実施形態の一例について説明したが、本開示の実施形態は、上記に限定されるものでなく、上記以外にも、その主旨を逸脱しない範囲内において種々変形して実施可能であることは勿論である。
本明細書に記載されたすべての文献、特許出願、および技術規格は、個々の文献、特許出願、および技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。
Claims (5)
- コイルが巻回されたソレノイドと、
前記ソレノイドの内側に配置される吸引子と、
弁体に連結され、前記ソレノイドへの通電により前記吸引子に吸引されるプランジャと、
前記ソレノイドの内側に設けられ、前記プランジャを収容するパイプと、
前記ソレノイドの軸方向の一端に重ねて配置される第1支持部、及び前記ソレノイドの軸方向の他端に重ねて配置される第2支持部を有し、前記第1支持部及び前記第2支持部に前記パイプがそれぞれ嵌入される第1取付孔及び第2取付孔が形成され、前記第1取付孔は前記パイプの外周における径方向の一方側に当接するハウジングと、
を有する電磁弁。 - 前記第1取付孔の中心と前記第2取付孔の中心とが、前記パイプの径方向にずれている請求項1に記載の電磁弁。
- 前記第1取付孔及び前記第2取付孔は互いに同径である請求項1又は2に記載の電磁弁。
- 前記ハウジングは、前記第1支持部と前記第2支持部とを連結する板状の連結部を備え、
前記第1取付孔は、前記連結部に平行な方向の一方側で、前記パイプの外周に当接する請求項1に記載の電磁弁。 - 前記第2取付孔は、前記パイプの外周における径方向の他方側に当接する請求項1に記載の電磁弁。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112023005636.6T DE112023005636T5 (de) | 2023-01-20 | 2023-11-22 | Elektromagnetisches Ventil |
| US19/115,896 US20260055823A1 (en) | 2023-01-20 | 2023-11-22 | Electromagnetic valve |
| CN202380066620.2A CN120513360A (zh) | 2023-01-20 | 2023-11-22 | 电磁阀 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023-007640 | 2023-01-20 | ||
| JP2023007640A JP7773216B2 (ja) | 2023-01-20 | 2023-01-20 | 電磁弁 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024154435A1 true WO2024154435A1 (ja) | 2024-07-25 |
Family
ID=91955546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/042065 Ceased WO2024154435A1 (ja) | 2023-01-20 | 2023-11-22 | 電磁弁 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20260055823A1 (ja) |
| JP (1) | JP7773216B2 (ja) |
| CN (1) | CN120513360A (ja) |
| DE (1) | DE112023005636T5 (ja) |
| WO (1) | WO2024154435A1 (ja) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112171U (ja) * | 1979-02-02 | 1980-08-07 | ||
| JPS5618480U (ja) * | 1979-07-23 | 1981-02-18 | ||
| JP2006147853A (ja) * | 2004-11-19 | 2006-06-08 | Fuji Koki Corp | 電磁弁 |
| JP2011021670A (ja) * | 2009-07-15 | 2011-02-03 | Hitachi Automotive Systems Ltd | 電磁弁 |
| JP2015040624A (ja) * | 2013-08-23 | 2015-03-02 | 株式会社アドヴィックス | 電磁弁とそれを用いたブレーキ液圧制御装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5640513B2 (ja) * | 2010-07-13 | 2014-12-17 | パナソニック株式会社 | 冷却装置およびこれを用いた電子機器 |
-
2023
- 2023-01-20 JP JP2023007640A patent/JP7773216B2/ja active Active
- 2023-11-22 US US19/115,896 patent/US20260055823A1/en active Pending
- 2023-11-22 DE DE112023005636.6T patent/DE112023005636T5/de active Pending
- 2023-11-22 CN CN202380066620.2A patent/CN120513360A/zh active Pending
- 2023-11-22 WO PCT/JP2023/042065 patent/WO2024154435A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112171U (ja) * | 1979-02-02 | 1980-08-07 | ||
| JPS5618480U (ja) * | 1979-07-23 | 1981-02-18 | ||
| JP2006147853A (ja) * | 2004-11-19 | 2006-06-08 | Fuji Koki Corp | 電磁弁 |
| JP2011021670A (ja) * | 2009-07-15 | 2011-02-03 | Hitachi Automotive Systems Ltd | 電磁弁 |
| JP2015040624A (ja) * | 2013-08-23 | 2015-03-02 | 株式会社アドヴィックス | 電磁弁とそれを用いたブレーキ液圧制御装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2024103356A (ja) | 2024-08-01 |
| DE112023005636T5 (de) | 2025-11-13 |
| JP7773216B2 (ja) | 2025-11-19 |
| US20260055823A1 (en) | 2026-02-26 |
| CN120513360A (zh) | 2025-08-19 |
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