WO2023153151A1 - 膨張弁 - Google Patents
膨張弁 Download PDFInfo
- Publication number
- WO2023153151A1 WO2023153151A1 PCT/JP2023/001185 JP2023001185W WO2023153151A1 WO 2023153151 A1 WO2023153151 A1 WO 2023153151A1 JP 2023001185 W JP2023001185 W JP 2023001185W WO 2023153151 A1 WO2023153151 A1 WO 2023153151A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bracket
- case
- lower case
- partition member
- expansion 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/10—Welded housings
- F16K27/102—Welded housings for 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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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
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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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
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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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
- F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
Definitions
- the present disclosure relates to an expansion valve that adjusts the flow rate of refrigerant in a refrigeration cycle.
- Patent Document 1 describes an electronic expansion valve on which an electric board is mounted.
- the rotor that drives the valve body of the electronic expansion valve is arranged in a space formed inside a cylindrical sleeve.
- An electrical board is located on the exterior of the sleeve that controls the operation of the electronic expansion valve.
- An electrical board is arranged in a space formed between the sleeve and the case.
- the internal space of the sleeve contains a high-pressure refrigerant whose pressure is reduced by an electronic expansion valve.
- the sleeve is a member that forms a partition against the high-pressure refrigerant.
- the present disclosure aims to provide an expansion valve having a structure capable of suppressing eccentricity of the case.
- An expansion valve includes a body, a valve body, a rotor, an electric substrate, a partition member, a case, an O-ring, a bracket, and a fastening member.
- the body forms a coolant channel.
- the valve body adjusts the degree of opening of the coolant channel inside the body.
- the rotor drives the valve body.
- An electrical board controls the rotation of the rotor.
- the partition member has a cylindrical shape that accommodates the rotor, and is fixed to the body coaxially with the valve body.
- the case is arranged outside the partition member, accommodates the electric board, and has a cylindrical portion coaxial with the partition member.
- the O-ring is arranged between the cylindrical portion and the partition member to prevent liquid from entering the interior of the case.
- the bracket has a body-side portion that extends in a direction parallel to the axial direction of the partition member and is fastened and fixed to the body, and a case-side portion that extends in a direction different from the axial direction of the partition member and is attached to the case.
- the fastening member fastens and fixes the bracket to the body at the body side portion.
- the case and bracket form an allowable structure that allows movement of the bracket with respect to the case in the fastening direction of the fastening member.
- FIG. 1 is an overall configuration diagram of a vapor compression refrigeration cycle of a first embodiment
- FIG. It is a front view showing an expansion valve of a 1st embodiment. It is a sectional view showing an expansion valve of a 1st embodiment.
- FIG. 4 is a cross-sectional view showing part of the expansion valve of the first embodiment, showing a state in which the gap between the lower case and the valve body is within tolerance.
- FIG. 4 is a cross-sectional view showing part of the expansion valve of the first embodiment, showing a state where the gap between the lower case and the valve body is out of tolerance.
- It is an exploded perspective view showing an expansion valve of a 1st embodiment.
- FIG. 4 is a perspective view showing a detent structure between a lower case and a bracket in the expansion valve of the first embodiment
- FIG. 4 is a front view showing a state in which the bracket is pressed against the body by a jig during assembly of the expansion valve of the first embodiment
- FIG. 11 is a perspective view showing a detent structure between a lower case and a bracket in the expansion valve of the second embodiment
- FIG. 11 is a perspective view showing a detent structure between a lower case and a bracket in the expansion valve of the second embodiment
- FIG. 11 is a cross-sectional view showing a detent structure between a lower case and a bracket in the expansion valve of the third embodiment
- FIG. 11 is a cross-sectional view showing a rotation preventing structure between a lower case and a bracket in an expansion valve according to a fourth embodiment; It is a front view which shows the expansion valve of 5th Embodiment. It is a front view which shows the expansion valve of 6th Embodiment.
- FIG. 11 is a side view showing an expansion valve of a sixth embodiment;
- FIG. 11 is a plan view showing a bracket of an expansion valve of a sixth embodiment;
- FIG. 14 is a cross-sectional view showing part of the expansion valve of the seventh embodiment, showing a state where the gap between the lower case and the valve body is within tolerance.
- FIG. 20 is a cross-sectional view showing part of the expansion valve of the eighth embodiment, showing a state where the gap between the lower case and the valve body is out of tolerance.
- the expansion valve of this embodiment is applied to the expansion valve 20 of the vapor compression refrigeration cycle 10 shown in FIG.
- a vapor compression refrigeration cycle 10 is applied to a vehicle air conditioner.
- a vehicle air conditioner is applied to an electric vehicle that obtains a driving force for running the vehicle from an electric motor for running.
- the vapor compression refrigeration cycle 10 has a compressor 11, a condenser 12, an expansion valve 20 and an evaporator 14.
- the compressor 11 is an electric compressor that sucks, compresses, and discharges refrigerant.
- Freon-based refrigerant for example, R134a
- a vapor compression refrigeration cycle is a subcritical cycle in which the pressure of the refrigerant on the high pressure side does not exceed the critical pressure of the refrigerant.
- the condenser 12 condenses the refrigerant discharged from the compressor 11 by exchanging heat with cooling water or air.
- the expansion valve 20 decompresses and expands the refrigerant condensed by the condenser 12 .
- the evaporator 14 exchanges heat with air to evaporate the refrigerant decompressed and expanded by the expansion valve 20 .
- the expansion valve 20 is an electric expansion valve whose valve body is driven by an electric actuator.
- the expansion valve 20 has a body portion 21, a lower case 22, an upper case 23 and a bracket 24.
- the body portion 21 has a valve body 211, a valve body 212, a partition member 213, and the like.
- the valve body 211 is a block-shaped member.
- the valve body 211 is formed with a refrigerant inlet 211a, a refrigerant flow path 211b, a valve seat 211c, and a refrigerant outlet 211d.
- the valve body 211 accommodates a valve body 212 and a screw mechanism (not shown).
- a driving force from the rotor 25 is transmitted to the valve body 212 via a screw mechanism (not shown).
- the screw mechanism converts the rotary motion of the rotor 25 into linear motion and transmits it to the valve body 212 .
- the valve body 212 approaches or separates from the valve seat 211c, thereby adjusting the opening degree of the refrigerant flow path 211b. .
- the coolant flows through the coolant flow path 211b, the coolant is decompressed and expanded by the throttling action in the gap between the valve body 212 and the valve seat 211c.
- the partition member 213 is a rotor housing member that houses the rotor 25 .
- the partition member 213 is formed in a cylindrical shape from metal such as stainless steel.
- the partition member 213 is arranged coaxially with the valve body 212 .
- One end (upper end in FIG. 3) of the partition member 213 is closed.
- the other end (lower end in FIG. 3) of the partition member 213 is open and in close contact with the valve body 211 . Therefore, the high-pressure refrigerant before decompression exists in the internal space of the partition member 213, and the partition member 213 serves as a partition between the refrigerant sealed circuit containing the high-pressure refrigerant and the outside.
- an O-ring is arranged between the partition member 213 and the valve body 211, and the male screw formed on the outer peripheral surface of the partition member 213 and the female screw formed on the inner peripheral surface of the valve body 211 are connected. By fastening, the partition member 213 and the valve body 211 are sealed and fixed.
- the rotor 25 When the coil 26 is energized, the rotor 25 rotates and generates driving force for driving the valve body 212 .
- the rotor 25 has a plurality of magnetic poles in the direction of rotation of the rotor 25 itself.
- the coil 26 generates a magnetic field that rotates the rotor 25 when energized.
- the rotor 25 and coil 26 constitute a stepping motor.
- the lower case 22 is a member that houses the coil 26, the partition member 213, the magnetic flux sensor 27 and the control board 28.
- the lower case 22 is arranged outside the partition member 213 and forms a waterproof case together with the upper case 23 .
- a cylindrical portion 22a into which the partition member 213 is coaxially inserted is opened.
- a sealing structure with an O-ring 29 is provided in the gap between the cylindrical portion 22 a of the lower case 22 and the partition member 213 .
- the O-ring 29 is a sealing member arranged between the cylindrical portion 22 a and the partition member 213 to prevent liquid from entering the lower case 22 .
- the outer peripheral surface of the lower case 22 is formed with an insertion groove 22b into which the bracket 24 is inserted.
- the insertion groove 22b extends in a direction perpendicular to the axial direction of the valve body 212 (horizontal direction in FIG. 3).
- the upper surface of the valve body 211 is formed with a body groove 211e into which the lower end of the lower case 22 is fitted.
- the depth dimension Dc of the body groove 211 e is the same as the gap tolerance between the valve body 211 and the lower case 22 .
- the gap dimension Dg between the valve body 211 and the lower case 22 is equal to or less than the tolerance.
- the inspection of whether or not the gap dimension Dg between the valve body 211 and the lower case 22 is equal to or less than the tolerance is carried out by inspecting whether light irradiated from the side is transmitted to the opposite side as indicated by the white arrows in FIGS. It is determined whether or not
- the gap dimension Dg between the valve body 211 and the lower case 22 exceeds the tolerance, the lower end of the lower case 22 is not positioned within the body groove 211e of the valve body 211 as shown in FIG. , the light irradiated from the side is transmitted to the opposite side.
- the gap dimension Dg between the valve body 211 and the lower case 22 is equal to or less than the tolerance
- the lower end of the lower case 22 is positioned within the body groove 211e of the valve body 211, as shown in FIG. Therefore, the light irradiated from the side does not pass through to the opposite side. Therefore, it is possible to reliably inspect whether or not the gap dimension Dg between the valve body 211 and the lower case 22 is equal to or less than the tolerance.
- the coil 26 is arranged coaxially with the rotor 25 and the partition member 213 radially outside the rotor 25 and the partition member 213 .
- the coil 26 is formed with a holding portion 26a for holding the magnetic flux sensor 27.
- the holding portion 26a is integrally molded with molding resin that seals the wire of the coil 26.
- the magnetic flux sensor 27 is a magnetic flux density detection unit that detects magnetic flux density.
- the magnetic flux sensor 27 is a magnetic flux change detector that detects magnetic flux changes accompanying the rotation of the rotor 25 .
- the magnetic flux sensor 27 Since the magnetic flux sensor 27 is held by the coil 26 , the positional accuracy of the magnetic flux sensor 27 with respect to the rotor 25 can be improved compared to the case where the magnetic flux sensor 27 is held by the lower case 22 . Therefore, the detection accuracy of the magnetic flux density by the magnetic flux sensor 27 can be improved.
- the control board 28 is an electric board that controls the energization of the coil 26 based on the detection signal of the magnetic flux sensor 27 .
- the upper case 23 is a lid member for sealing the lower case 22 .
- Lower case 22 and upper case 23 are made of resin.
- the lower case 22 and the upper case 23 are fixed by laser welding. As a result, the lower case 22 and the upper case 23 are liquid-tightly sealed, and water is prevented from entering electrical control components such as the control board 28 and the magnetic flux sensor 27 .
- the bracket 24 is a member used to fix the lower case 22 to the valve body 211.
- the bracket 24 has a flat plate shape bent in an L shape.
- the bracket 24 has a body side portion 24a extending toward the valve body 211 and a case side portion 24b extending toward the lower case 22 side.
- the body side portion 24 a extends in a direction parallel to the axial direction of the partition member 213 .
- the case-side portion 24 b extends in a direction orthogonal to the axial direction of the partition member 213 .
- the bending angle of the bracket 24 is 90 degrees (in other words, right angle).
- the outer shape of the bracket 24 is line-symmetrical.
- Bracket 24 is made of stainless steel.
- a screw hole 24c is provided in the body side portion 24a.
- a side surface of the valve body 211 is provided with a female screw hole 211f.
- the bracket 24 is fastened and fixed to the valve body 211 with a body-side screw 30 .
- a notch 24d having a shape corresponding to the insertion groove 22b of the lower case 22 is formed in the case-side portion 24b. A portion of the case-side portion 24b near the notch portion 24d is inserted into the insertion groove 22b of the lower case 22 .
- the notch 24d of the bracket 24 and the insertion groove 22b of the lower case 22 form a detent structure. As shown in FIG. 7, the notch 24d of the bracket 24 and the insertion groove 22b of the lower case 22 have polygonal shapes corresponding to each other, thereby forming a detent structure.
- the bracket 24 can be inserted into the insertion groove 22b of the lower case 22 from a plurality of directions. .
- the bracket 24 and the lower case 22 can be used for other products to achieve common use of parts.
- the fitting of the bracket 24 into the insertion groove 22b of the lower case 22 is a clearance fit that allows the bracket 24 to move in the insertion direction.
- a gap is provided between the insertion groove 22b of the lower case 22 and the bracket 24 in both the width direction and the thickness direction of the bracket 24 .
- a portion 24e protruding from the insertion groove 22b (hereinafter referred to as a protruding portion 24e) has a line-symmetrical shape.
- the bracket 24 is inserted into the insertion groove 22b of the lower case 22. As shown in FIG. Since the fitting of the bracket 24 into the insertion groove 22b of the lower case 22 is a clearance fit, the bracket 24 can move in the insertion direction with respect to the lower case 22 in this state.
- the lower case 22 and bracket 24 are assembled to the valve body 211 of the main body portion 21 .
- the bracket 24 is fastened and fixed to the valve body 211 while pressing the protruding portion 24e of the bracket 24 against the valve body 211 side (lower side in FIG. 8) with the jig 40 as indicated by the white arrow in FIG. .
- the screw hole 24c of the bracket 24 and the female screw hole 211f of the valve body 211 are used to fasten and fix the body-side screw 30. As shown in FIG.
- the bracket 24 is fastened and fixed to the valve body 211 in a state in which the bracket 24 has a degree of freedom in the insertion direction with respect to the lower case 22 . can be assembled into Therefore, biased compression of the O-ring 29 can be suppressed.
- the jig 40 presses the bracket 24 toward the valve body 211 (lower side in FIG. 8). Fixed. As a result, it is possible to prevent the lower case 22 from moving in the fastening direction (horizontal direction in FIG. 8) after the bracket 24 is fastened and fixed to the valve body 211 .
- the coil 26 is assembled to the lower case 22 .
- the magnetic flux sensor 27 is attached to the holding portion 26 a of the coil 26 .
- the control board 28 is assembled to the lower case 22 .
- the terminals of the control board 28 are connected to the terminals of the coil 26 and the lead wires of the magnetic flux sensor 27 are soldered to the control board 28 .
- the upper case 23 is assembled to the lower case 22 by laser welding and the lid is closed.
- the assembly of the expansion valve 20 is completed through the above steps.
- the bracket 24 has a body side portion 24a that extends in a direction parallel to the axial direction of the partition member 213 and is fastened and fixed to the valve body 211 by a fastening member 30, and a direction that is different from the axial direction of the partition member 213. and a case-side portion 24b that extends upward and is attached to the lower case 22.
- the bracket 24 is fastened and fixed to the valve body 211 by a fastening member 30 in a direction orthogonal to the axial direction of the partition member 213 at the body side portion 24a.
- the lower case 22 and the bracket 24 form an allowable structure that allows movement of the bracket 24 with respect to the lower case 22 in the fastening direction of the fastening member 30 .
- the bracket 24 has a protruding portion 24e that protrudes from the lower case 22 when viewed from the axial direction of the partition member 213. According to this, when the bracket 24 is fastened and fixed to the valve body 211, the bracket 24 can be fastened and fixed to the valve body 211 while the protruding portion 24e is pressed against the valve body 211 side by an external force. Therefore, it is possible to prevent the lower case 22 from moving in the fastening direction (horizontal direction in FIG. 8) after the bracket 24 is fastened and fixed to the valve body 211 .
- the permissive structure that permits movement of the bracket 24 has an insertion groove 22b.
- the insertion groove 22b is formed in the lower case 22 into which the bracket 24 is inserted.
- the fitting between the bracket 24 and the insertion groove 22b is a clearance fit that allows movement of the bracket 24 with respect to the lower case 22 in the fastening direction. This allows movement of the bracket 24 with respect to the lower case 22 in the fastening direction of the fastening member 30 .
- the insertion groove 22b is formed on the outer peripheral surface of the lower case 22, and the bracket 24 is formed with a notch 24d corresponding to the shape of the insertion groove 22b. This simplifies the structure for allowing movement of the bracket 24 .
- the insertion groove 22b and the notch 24d form a detent structure that prevents the bracket 24 from rotating with respect to the lower case 22 in the direction around the axis of the partition member 213. According to this, it is possible to prevent the lower case 22 from rotating with respect to the valve body 211 in the direction around the axis of the partition member 213 after assembly.
- the coil 26 is formed with a holding portion 26 a that holds the magnetic flux sensor 27 . According to this, since the magnetic flux sensor 27 is held by the coil 26 , the positional accuracy of the magnetic flux sensor 27 with respect to the rotor 25 can be improved as compared with the case where the magnetic flux sensor 27 is held by the lower case 22 . Therefore, the detection accuracy of the magnetic flux density by the magnetic flux sensor 27 can be improved.
- the notch 24d of the bracket 24 and the insertion groove 22b of the lower case 22 have polygonal shapes corresponding to each other, thereby forming a detent structure.
- the notch 24d of the bracket 24 and the insertion groove 22b of the lower case 22 have uneven shapes that mesh with each other, thereby forming a detent structure.
- the notch 24d of the bracket 24 is formed with a concave shape, and the insertion groove 22b of the lower case 22 is formed with a convex shape.
- the notch 24d of the bracket 24 is formed with a convex shape, and the insertion groove 22b of the lower case 22 is formed with a concave shape. According to these embodiments, it is possible to reliably exhibit the anti-rotation function.
- the notch 24d of the bracket 24 and the insertion groove 22b of the lower case 22 have polygonal shapes corresponding to each other, thereby forming a detent structure.
- a case-side screw 31 fastened to the lower case 22 forms a detent structure.
- a pedestal 22d is formed on the lower case 22.
- a female screw hole 22c into which the case-side screw 31 is fastened is formed in the base 22d.
- the bracket 24 is formed with a pedestal hole 24f into which the pedestal 22d is inserted.
- the thickness of the pedestal 22 d is greater than the thickness of the bracket 24 .
- the inner diameter of the base hole 24f is larger than the outer diameter of the base 22d.
- the case-side screw 31 is fastened to the female screw hole 22c, so that the bracket 24 has a degree of freedom in the horizontal direction of FIG. It is assembled to the lower case 22 in this state.
- bracket 24 since the bracket 24 is assembled to the lower case 22 using the case-side screws 31, the bracket 24 can be reliably assembled to the lower case 22.
- the bracket 24 is attached to the lower case 22 with the case-side screws 31, but in this embodiment, the bracket 24 is attached to the lower case 22 by heat welding as shown in FIG. In FIG. 12, the shape of the lower case 22 before thermal welding is indicated by a chain double-dashed line.
- a pin 22g is formed on the pedestal 22d of the lower case 22 before thermal welding.
- the pedestal 22d is inserted into the pedestal hole 24f of the bracket 24, and the pin 22g is heated and melted while the washer 32 made of metal (for example, made of stainless steel) is inserted into the pin 22g.
- the bracket 24 is attached to the lower case 22 with a degree of freedom in the horizontal direction of FIG.
- the bracket 24 is attached to the lower case 22 by heat welding, so the bracket 24 can be reliably attached to the lower case 22 .
- the bending angle of the bracket 24 is 90 degrees (in other words, a right angle), but in this embodiment, the bending angle of the bracket 24 is an acute angle as shown in FIG.
- the angle formed by the surface of the valve body 211 with which the bracket 24 abuts and the direction in which the insertion groove 22b of the lower case 22 extends is 90 degrees. Therefore, the bending angle of the bracket 24 is smaller than the angle formed by the surface of the valve body 211 with which the bracket 24 abuts and the direction in which the insertion groove 22b of the lower case 22 extends.
- bracket 24 when the bracket 24 is fastened and fixed to the valve body 211 with the body-side screws 30, the bracket 24 presses the lower case 22 toward the valve body 211 (lower side in FIG. 13). This allows movement of the bracket 24 with respect to the lower case 22 in the direction of fastening by the fastening member 30 (horizontal direction in FIG. 13).
- the insertion groove 22b extends in a direction orthogonal to the axial direction of the partition member 213, and the bracket 24 is positioned between a portion fastened and fixed to the valve body 211 and a portion attached to the lower case 22. , and the bending angle of the bracket 24 is an acute angle.
- the bracket 24 when the bracket 24 is fastened and fixed to the valve body 211, the bracket 24 can press the lower case 22 against the valve body 211 side. Therefore, it is possible to prevent the lower case 22 from moving in the fastening direction (horizontal direction in FIG. 13) after the bracket 24 is fastened and fixed to the valve body 211 .
- the pressing portion 24g is formed by twisting and plastically deforming a part of the bracket 24 as indicated by the arrow in FIG. 15 after fastening and fixing the bracket 24 to the valve body 211.
- the bracket 24 is formed with a notch 24h for facilitating plastic deformation.
- the bracket 24 has a pressing portion 24g bent to press the lower case 22 against the valve body 211 side. According to this, after the bracket 24 is fastened and fixed to the body 211, the lower case 22 can be restrained from moving in the fastening direction (horizontal direction in FIG. 14).
- the upper surface of the valve body 211 is formed with the body groove 211e into which the lower end of the lower case 22 is fitted.
- a body notch 211g into which the lower end of the lower case 22 is fitted is formed on the upper surface of the body 211 .
- the depth dimension Dc of the body notch 211g is the same as the gap tolerance between the valve body 211 and the lower case 22.
- the bending angle of the bracket 24 is acute, and the angle between the surface of the valve body 211 with which the bracket 24 abuts and the direction in which the insertion groove 22b of the lower case 22 extends is 90 degrees.
- the bending angle of the bracket 24 may be 90 degrees, and the angle between the surface of the valve body 211 with which the bracket 24 abuts and the direction in which the insertion groove 22b of the lower case 22 extends may be an obtuse angle.
- the bending angle of the bracket 24 is smaller than the angle formed by the surface of the valve body 211 with which the bracket 24 abuts and the direction in which the insertion groove 22b of the lower case 22 extends.
- the bracket 24 presses the lower case 22 against the valve body 211 side when fastening and fixing to the valve body 211 side. Accordingly, movement of the valve body 211 after the bracket 24 is fastened and fixed to the valve body 211 can be suppressed.
- valve body 212 is driven by the stepping motor having the rotor 25 and the coil 26, but various motors may be employed as the electric actuator that drives the valve body 212.
- the vapor compression refrigeration cycle 10 is applied to a vehicle air conditioner, but the application target of the vapor compression refrigeration cycle 10 is not limited to this.
- the vapor compression refrigeration cycle 10 may be applied to stationary air conditioners, refrigeration equipment, water heaters, and the like.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Electromagnetism (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Valve Housings (AREA)
Abstract
Description
本実施形態の膨張弁は、図1に示す蒸気圧縮式冷凍サイクル10の膨張弁20に適用されている。蒸気圧縮式冷凍サイクル10は、車両用空調装置に適用されている。車両用空調装置は、車両走行用の駆動力を走行用の電動モータから得る電気自動車に適用されている。
上記実施形態では、ブラケット24の切欠部24dおよび下ケース22の挿入溝22bが互いに対応する多角形形状を有していることによって回り止め構造が形成されている。
上記実施形態では、ブラケット24の切欠部24dおよび下ケース22の挿入溝22bが互いに対応する多角形形状を有していることによって回り止め構造が形成されている。本実施形態では、図11に示すように、下ケース22に締結されたケース側ネジ31によって回り止め構造が形成されている。
上記第3実施形態では、ブラケット24がケース側ネジ31によって下ケース22に組み付けられるが、本実施形態では、図12に示すように、ブラケット24が熱溶着によって下ケース22に組み付けられる。図12では、熱溶着を行う前の下ケース22の形状を二点鎖線で示している。
上記実施形態では、ブラケット24の屈曲角度は90度(換言すれば直角)になっているが、本実施形態では、図13に示すように、ブラケット24の屈曲角度は鋭角になっている。
上記第1実施形態では、ブラケット24をバルブボデー211に締結固定する際にブラケット24のはみ出し部24eを治具40でバルブボデー211側に押しつけることによって下ケース22をバルブボデー211側に押しつける。これに対して、本実施形態では、図14~16に示すように、ブラケット24の押付部24gによって下ケース22をバルブボデー211側(図14~15では下方側)に押しつける。
上記第1実施形態では、バルブボデー211の上面に、下ケース22の下端が嵌まり込むボデー溝211eが形成されているが、本実施形態では、図17~図18に示すように、バルブボデー211の上面に、下ケース22の下端が嵌まり込むボデー切欠部211gが形成されている。
Claims (8)
- 冷媒流路(211b)を形成するボデー(211)と、
前記冷媒流路の開度を調整する弁体(212)と、
前記弁体を駆動するロータ(25)と、
前記ロータの回転を制御する電気基板(28)と、
前記ボデーに固定され、前記ロータを収容する円筒状の隔壁部材(213)と、
前記隔壁部材の外部に配置されて前記電気基板を収容し、前記隔壁部材と同軸状の円筒部(22a)を有するケース(22)と、
前記円筒部と前記隔壁部材との間に配置され、前記ケースの内部への液体の侵入を抑制するOリング(29)と、
前記隔壁部材の軸方向と平行な方向に延びて前記ボデーに締結固定されるボデー側部位(24a)と、前記隔壁部材の軸方向とは異なる方向に延びて前記ケースに取り付けられるケース側部位(24b)とを有するブラケット(24)と、
前記ブラケットを前記ボデー側部位にて前記ボデーに締結固定する締結部材(30)とを備え、
前記ケースおよび前記ブラケットは、前記締結部材による締結方向において前記ケースに対する前記ブラケットの動きを許容する許容構造(22b、24b)を形成している膨張弁。 - 前記ブラケットは、前記隔壁部材の軸方向から見たときに前記ケースからはみ出すはみ出し部(24e)を有している請求項1に記載の膨張弁。
- 前記許容構造は、前記ケースに形成され、前記ブラケットが挿入される挿入溝(22b)を有しており、
前記ブラケットと前記挿入溝との嵌め合いは、前記締結方向において前記ケースに対する前記ブラケットの動きを許容する隙間嵌めになっている請求項1または2に記載の膨張弁。 - 前記挿入溝は、前記ケースの外周面に形成されており、
前記ブラケットには、前記挿入溝の形状に対応する切欠部(24d)が形成されている請求項3に記載の膨張弁。 - 前記挿入溝および前記切欠部は、前記ブラケットが前記ケースに対して前記隔壁部材の軸回り方向に回転することを防止する回り止め構造を形成している請求項4に記載の膨張弁。
- 前記挿入溝は、前記隔壁部材の軸方向と直交する方向に延びており、
前記ブラケットは、前記ボデーに締結固定される部位と、前記ケースに取り付けられる部位との間で屈曲した板形状を有しており、
前記ブラケットの屈曲角度は鋭角である請求項3ないし5のいずれか1つに記載の膨張弁。 - 前記ブラケットは、前記ケースを前記ボデー側に押し付けるように曲げられた押付部(24g)を有している請求項1ないし6のいずれか1つに記載の膨張弁。
- 前記ケースに収容され、前記ロータを回転させる磁界を発生するコイル(26)と、
前記ロータの回転に伴う磁束の変化を検出する磁束センサ(27)とを備え、
前記コイルには、前記磁束センサを保持する保持部(26a)が形成されている請求項1ないし7のいずれか1つに記載の膨張弁。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380020817.2A CN118679338B (zh) | 2022-02-10 | 2023-01-17 | 膨胀阀 |
| JP2023580132A JP7609308B2 (ja) | 2022-02-10 | 2023-01-17 | 膨張弁 |
| DE112023000884.1T DE112023000884T5 (de) | 2022-02-10 | 2023-01-17 | Expansionsventil |
| US18/796,010 US12222172B2 (en) | 2022-02-10 | 2024-08-06 | Expansion valve |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2022-019562 | 2022-02-10 | ||
| JP2022019562 | 2022-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| US18/796,010 Continuation US12222172B2 (en) | 2022-02-10 | 2024-08-06 | Expansion valve |
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| Publication Number | Publication Date |
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| WO2023153151A1 true WO2023153151A1 (ja) | 2023-08-17 |
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| PCT/JP2023/001185 Ceased WO2023153151A1 (ja) | 2022-02-10 | 2023-01-17 | 膨張弁 |
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| US (1) | US12222172B2 (ja) |
| JP (1) | JP7609308B2 (ja) |
| CN (1) | CN118679338B (ja) |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004239428A (ja) * | 2003-01-17 | 2004-08-26 | Saginomiya Seisakusho Inc | 電動弁 |
| JP2006112522A (ja) * | 2004-10-14 | 2006-04-27 | Saginomiya Seisakusho Inc | 電動弁 |
| JP2007024206A (ja) * | 2005-07-19 | 2007-02-01 | Fuji Koki Corp | 電動弁 |
| WO2009037724A1 (ja) * | 2007-09-18 | 2009-03-26 | Fujikin Incorporated | 小型流量制御弁 |
| JP2010014277A (ja) * | 2009-08-28 | 2010-01-21 | Fuji Koki Corp | 電動弁 |
| KR20200043566A (ko) * | 2018-10-17 | 2020-04-28 | (주)신한전기 | 냉난방 시스템용 전자식 팽창밸브 |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2335766A1 (fr) * | 1975-12-18 | 1977-07-15 | Legris France Sa | Perfectionnement aux robinets a tige de manoeuvre tournante |
| US4683453A (en) * | 1985-11-25 | 1987-07-28 | Automatic Switch Company | Solenoid actuator with fastener |
| JP2000220762A (ja) * | 1998-11-25 | 2000-08-08 | Toyota Motor Corp | 電磁弁 |
| US6651851B2 (en) * | 1999-09-15 | 2003-11-25 | Technical Concepts, Llc | System and method for dispensing soap |
| US6789781B2 (en) * | 2001-03-16 | 2004-09-14 | Entegris, Inc. | Reinforced diaphragm valve |
| JP4587983B2 (ja) * | 2006-03-29 | 2010-11-24 | ジヤトコ株式会社 | ソレノイドバルブの取付構造 |
| DE102009046618B4 (de) * | 2009-11-11 | 2023-09-21 | Zf Friedrichshafen Ag | Vorrichtung zur Befestigung und Kontaktierung von Stellgliedern |
| US8789807B2 (en) * | 2011-02-09 | 2014-07-29 | Kmc Controls, Inc. | Quick disconnect actuator mounting |
| US8632054B2 (en) * | 2011-02-23 | 2014-01-21 | Honeywell International Inc. | Valve actuator assembly with tool-less interconnect |
| CN204042125U (zh) * | 2014-08-07 | 2014-12-24 | 浙江新劲空调设备有限公司 | 热力膨胀阀连接结构 |
| CN106711533B (zh) | 2015-07-17 | 2019-08-27 | 浙江三花汽车零部件有限公司 | 热交换装置 |
| PL3327397T3 (pl) | 2015-07-17 | 2022-12-12 | Zhejiang Sanhua Automotive Components Co., Ltd. | Urządzenie do wymiany ciepła |
| CN107620824B (zh) * | 2016-07-14 | 2020-04-03 | 浙江三花汽车零部件有限公司 | 电子膨胀阀 |
| CN107763284B (zh) | 2016-08-18 | 2023-07-11 | 浙江三花智能控制股份有限公司 | 电子膨胀阀、控制系统以及控制系统的控制方法 |
| CN108119699B (zh) * | 2016-11-30 | 2021-12-07 | 盾安环境技术有限公司 | 一种导阀和主阀体连接结构及车用空调系统电子膨胀阀 |
| JP7049367B2 (ja) | 2017-05-09 | 2022-04-06 | ジャージャン サンフア オートモーティヴ コンポーネンツ カンパニー リミテッド | 電子膨張弁、熱管理ユニット、冷却システム及び電子膨張弁の製造方法 |
| JP6941507B2 (ja) * | 2017-08-31 | 2021-09-29 | 株式会社キッツエスシーティー | アクチュエータ用電磁弁の取付構造とアクチュエータ付きバルブ |
| JP2020041658A (ja) | 2018-09-13 | 2020-03-19 | 株式会社不二工機 | 複合弁 |
| CN213335059U (zh) * | 2020-05-19 | 2021-06-01 | 法雷奥汽车空调湖北有限公司 | 一种电子膨胀阀和热管理组件 |
| CN113758063B (zh) * | 2020-05-19 | 2023-07-25 | 法雷奥汽车空调湖北有限公司 | 一种电子膨胀阀、热管理组件及汽车空调系统 |
| CN212692177U (zh) * | 2020-05-19 | 2021-03-12 | 法雷奥汽车空调湖北有限公司 | 一种电子膨胀阀、热管理组件及汽车空调系统 |
-
2023
- 2023-01-17 CN CN202380020817.2A patent/CN118679338B/zh active Active
- 2023-01-17 JP JP2023580132A patent/JP7609308B2/ja active Active
- 2023-01-17 DE DE112023000884.1T patent/DE112023000884T5/de active Pending
- 2023-01-17 WO PCT/JP2023/001185 patent/WO2023153151A1/ja not_active Ceased
-
2024
- 2024-08-06 US US18/796,010 patent/US12222172B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004239428A (ja) * | 2003-01-17 | 2004-08-26 | Saginomiya Seisakusho Inc | 電動弁 |
| JP2006112522A (ja) * | 2004-10-14 | 2006-04-27 | Saginomiya Seisakusho Inc | 電動弁 |
| JP2007024206A (ja) * | 2005-07-19 | 2007-02-01 | Fuji Koki Corp | 電動弁 |
| WO2009037724A1 (ja) * | 2007-09-18 | 2009-03-26 | Fujikin Incorporated | 小型流量制御弁 |
| JP2010014277A (ja) * | 2009-08-28 | 2010-01-21 | Fuji Koki Corp | 電動弁 |
| KR20200043566A (ko) * | 2018-10-17 | 2020-04-28 | (주)신한전기 | 냉난방 시스템용 전자식 팽창밸브 |
Also Published As
| Publication number | Publication date |
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| US12222172B2 (en) | 2025-02-11 |
| DE112023000884T5 (de) | 2024-12-05 |
| US20240393068A1 (en) | 2024-11-28 |
| JP7609308B2 (ja) | 2025-01-07 |
| JPWO2023153151A1 (ja) | 2023-08-17 |
| CN118679338A (zh) | 2024-09-20 |
| CN118679338B (zh) | 2025-04-29 |
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