WO2019098804A1 - Soupape de régulation pour compresseur à capacité variable - Google Patents

Soupape de régulation pour compresseur à capacité variable Download PDF

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Publication number
WO2019098804A1
WO2019098804A1 PCT/KR2018/014242 KR2018014242W WO2019098804A1 WO 2019098804 A1 WO2019098804 A1 WO 2019098804A1 KR 2018014242 W KR2018014242 W KR 2018014242W WO 2019098804 A1 WO2019098804 A1 WO 2019098804A1
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WO
WIPO (PCT)
Prior art keywords
port
valve
plunger
capacity compressor
control valve
Prior art date
Application number
PCT/KR2018/014242
Other languages
English (en)
Korean (ko)
Inventor
박장식
강동수
홍태호
황성환
국무성
박지영
김준태
Original Assignee
동일기계공업 주식회사
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Application filed by 동일기계공업 주식회사 filed Critical 동일기계공업 주식회사
Publication of WO2019098804A1 publication Critical patent/WO2019098804A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14—Control
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • 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
    • 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

Definitions

  • the present invention relates to a control valve for a variable capacity compressor, and particularly to a control valve for a variable capacity compressor, in which a two-stage coil for accommodating and driving a part of a plunger is applied to increase concentricity between parts and increase driving force, So as to prevent the interference which may occur due to the turning of the center and to perform the valve control with high accuracy and to maximize the market competitiveness while increasing the reliability and merchability of the product It's about what you can do.
  • a compressor for a refrigerant applied to a vehicle air conditioner is driven by receiving the rotational force of the engine, the driving of the compressor depends on the rotational speed of the engine, that is, the rotational speed per minute, The rotation speed is greatly influenced.
  • the cooling control is not free, and the variable capacity compressor which performs the proper cooling by varying the discharge capacity of the refrigerant irrespective of the revolution speed per minute of the engine is widely It has been applied.
  • a swash plate is provided on a crankshaft that is rotated by receiving the rotational force of the engine, and the variable displacement compressor varies the discharge capacity of the refrigerant by appropriately adjusting the inclination angle of the swash plate.
  • a control valve is provided in the variable displacement compressor.
  • One of the conventional control valves for the variable displacement compressor is disclosed in Korean Patent Registration No. 10-933830.
  • valve body for controlling the opening and closing of the valve is provided on the opposite side of the plunger, while the plunger driven by the coil is located in the coil, the length from the plunger to the valve body is long, It is difficult to accurately maintain the concentricity and coaxiality, and vibration and noise are frequently generated as well as interference and malfunction between components.
  • the plunger since the plunger is located inside the coil, it is necessary to design the outer diameter of the plunger to be smaller than the inner diameter of the coil, so that it is difficult to obtain a high driving force at a desired level.
  • the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a control valve for a variable capacity compressor, in which a part of a plunger is accommodated and a two- The valve control can be performed with high accuracy by increasing the driving force.
  • the non-magnetic material sleeve is added to the sliding portion to reduce the influence by the magnetic force and reduce the sliding resistance.
  • the present invention provides a control valve for a variable displacement compressor that maximizes market competitiveness while increasing reliability and merchantability of the product.
  • the control valve is connected to a variable capacity compressor having a crank chamber, a discharge chamber, and a suction chamber and having a swash plate in the crank chamber, and controls the inclination angle of the swash plate through the passage switching of the refrigerant.
  • a hollow body portion having a first port, a second port, and a third port communicating with the crank chamber, the discharge chamber, and the suction chamber, respectively; And a main valve positioned to be movable along the longitudinal direction in the body portion and capable of adjusting an opening degree of a flow path formed between the first port and the second port;
  • a pressure sensitive part including a pressure sensitive member that is expandable and contractible in accordance with a pressure change of the third port to correct a position of the valve part;
  • Stage coil having a large-diameter portion and a small-diameter portion with different inner diameters and forming a magnetic force corresponding to the amount of supplied current, and a two-stage coil having one end connected to the valve portion and the other portion connected to the large-
  • a driving unit including a plunger that is inserted and retractable; And a sleeve of a non-magnetic material interposed between the inner circumferential surface of the body portion and the outer circumferential surface of the plunger so as to reduce
  • the body portion may include a main body having the first port and the second port formed therein, and a yoke having the third port and made of a paramagnetic material;
  • the sleeve may be interposed between the inner circumferential surface of the yoke and the outer circumferential surface of the plunger.
  • the pressure responsive portion includes a bellows, which is a pressure sensitive member having an elastic body therein, and is located in the plunger.
  • a bellows which is a pressure sensitive member having an elastic body therein, and is located in the plunger.
  • One side of the bellows is fixed to a core located inside the two-stage coil, It may be preferable to selectively contact the valve portion according to the position of the valve body.
  • the sleeve is supported on the core and fixed in position.
  • valve portion may further include a bypass passage for communicating the first port and the third port, so that the gap between the valve portion and the valve seat may be changed while the valve portion is advanced or retracted, thereby performing a variable orifice function .
  • the present invention can prevent the interference that may occur due to the turning of the center by increasing the concentricity and the coaxiality between the components by applying a two-stage coil for receiving and driving a part of the plunger in the control valve for the variable capacity compressor, By increasing the driving force, the valve control is performed with high accuracy. Particularly, by adding the non-magnetic material sleeve to the sliding portion, the influence by the magnetic force is reduced and the sliding resistance is reduced. And to maximize market competitiveness while increasing commerciality.
  • FIG. 1 is a perspective view showing a control valve for a variable capacity compressor according to the present invention
  • FIG. 2 is an exploded perspective view of a control valve for a variable capacity compressor according to the present invention
  • FIG. 3 is an exploded perspective view of a control valve for a variable capacity compressor according to the present invention
  • FIG. 4 is an exploded perspective view of a control valve for a variable capacity compressor according to the present invention.
  • FIG. 5 is an exploded perspective view of a control valve for a variable capacity compressor according to the present invention.
  • FIG. 6 is a sectional view showing a control valve for a variable capacity compressor according to the present invention.
  • FIG. 7 is an enlarged view of a portion A of FIG. 6 showing a case where power is not applied to a driving portion in a control valve for a variable capacity compressor according to the present invention
  • FIG. 8 is an enlarged view of a portion A in FIG. 6 showing a case where a current amount is applied to a driving portion in a control valve for a variable capacity compressor according to the present invention
  • FIG. 9 is an enlarged view of a portion A of FIG. 6 showing a case where a current amount is appropriately adjusted and applied to a drive portion in a control valve for a variable capacity compressor according to the present invention
  • Fig. 10 is an enlarged view of a portion B in Fig. 6; Fig.
  • body part 101 first port
  • main body 120 main body 120: yoke
  • valve seat 131 through hole
  • valve part 210 main valve
  • valve shaft 221 bypass passage
  • first support member 313 second support member
  • sealing 410 two-stage coil
  • FIG. 1 is a perspective view showing a control valve for a variable capacity compressor according to the present invention
  • FIG. 2 is an exploded perspective view of a part of a body portion of a control valve for a variable capacity compressor according to the present invention
  • Fig. 2 is an exploded perspective view of a control valve for a variable capacity compressor according to the present invention.
  • FIG. 4 is an exploded perspective view of a control valve for a variable capacity compressor according to the present invention in which a valve portion is disassembled;
  • FIG. 5 is an exploded perspective view of a control valve for a variable capacity compressor according to the present invention, 6 is a sectional view showing a control valve for a variable capacity compressor according to the present invention.
  • FIG. 7 is an enlarged view of a portion A of FIG. 6 showing the case where power is not applied to the driving portion in the control valve for the variable capacity compressor according to the present invention.
  • FIG. FIG. 9 is an enlarged view of a portion A in FIG. 6 showing a case where a current amount is applied to a driving portion of the valve in FIG. 6;
  • FIG. 9 is a cross- Fig. 6 is an enlarged view of a portion A in Fig.
  • FIG. 10 is an enlarged view of the portion B in FIG.
  • the control valve for a variable capacity compressor according to the present invention can prevent interference that may occur due to the center turning by increasing the concentricity and coaxiality between parts by applying a two stage coil 410 which receives and drives a part of the plunger,
  • the sleeve 500 of the non-magnetic material can be added to the sliding portion in particular to reduce the influence by the magnetic force and reduce the sliding resistance,
  • the basic feature of the technology is that it maximizes market competitiveness while increasing the reliability and merchability of the product.
  • a control valve for a variable capacity compressor is connected to a variable displacement compressor provided with a crank chamber, a discharge chamber, and a suction chamber, and having a swash plate in the crank chamber, 1.
  • a control valve for controlling an inclination angle of a swash plate by switching a flow path comprising: A hollow body portion 100 in which a first port 101, a second port 102, and a third port 103 communicating with the crank chamber, the discharge chamber, and the suction chamber are formed; And a main valve (210) positioned to be movable along the longitudinal direction in the body part (100) and capable of adjusting the opening degree of a flow path formed between the first port (101) and the second port (102) (200);
  • a pressure sensitive part 300 including a pressure sensitive member 310 which is expandable and contractible according to a pressure change of the third port 103 to correct the position of the valve part 200;
  • Stage coil 410 formed of a stepped large-diameter portion 411 and a small-diameter
  • control valve for a variable capacity compressor includes a body 100, a valve 200, a pressure sensitive part 300, a driving part 400, and a sleeve 500.
  • control valve for a variable capacity compressor is suitable for application to a known variable capacity compressor which is a key element constituting an air conditioner of a vehicle.
  • the known variable capacity compressor has a crank chamber, a discharge chamber, A suction chamber is formed.
  • variable capacity compressor corresponds to a compressor in a cooling cycle in which a compressor, a condenser, an expansion valve, and an evaporator are provided and perform cooling according to the refrigerant circulation.
  • a swash plate is provided in the crank chamber of the variable capacity compressor, and the control valve for the variable capacity compressor of the present invention is connected to the variable capacity compressor to control the inclination angle of the swash plate by switching the flow path of the refrigerant.
  • the body part 100 has a substantially hollow pipe shape.
  • the body part 100 has a basic skeleton in the control valve for a variable capacity compressor of the present invention. Or may be provided movably.
  • the body 100 may be a single body composed of only one component, or an assembly of two or more components assembled together.
  • the body part 100 is made of a single body as much as possible in consideration of ease of assembly and the like. However, if the internal shape of the body part 100 is desired to be processed easily or partially in terms of physical properties of a specific material, Will be good.
  • the body portion 100 includes a first port 101, a second port 102, and a third port (not shown) communicating with the crank chamber, the discharge chamber, and the suction chamber formed in the variable capacity compressor, 103 are formed.
  • the first port 101, the second port 102, and the third port 103 are sequentially formed on the body portion 100 from left to right in the drawing,
  • the second port 102 and the third port 103 are formed on the circumferential surface of the body part 100 in such a manner that one or more than one As shown in FIG.
  • a plurality of through holes 131 are radially formed along the rim of the valve seat 130 to allow the refrigerant to flow through the valve seat 130, And may be distributed to the first port 101.
  • the valve seat 130 may be press-fitted to the inner circumferential surface of the first port 101 in a non-adjustable position or may be screwed to adjust the fixing position of the valve seat 130,
  • a separate filter 132 may be additionally installed at the end of the first port 101 to filter the foreign substances from the refrigerant passing through the first port 101.
  • the valve seat 130 will be controlled by a gap between the valve seat 200 and the valve seat 200 to function as a variable orifice, which will be described later.
  • a generally rectangular filter frame 140 may be provided around the second port 102.
  • a porous filter not shown in the drawing may be attached to the filter frame 140, It is possible to filter out the foreign substances contained in the refrigerant flowing through the refrigerant circulation pipe 102.
  • reference numeral 105 denotes a sealing ring made of an elastic sealing material provided on the outer circumferential surface of the body part 100 to maintain airtightness.
  • a sealing ring 105 is positioned between the respective ports, 100 have been illustrated with three seals 105 applied thereto.
  • valve unit 200 may be disposed within the body 100 and be movable along the longitudinal direction.
  • the valve unit 200 may also be formed of a unitary body or an assembly .
  • the main valve 210 and the valve shaft 220 are connected to each other by screws 211.
  • the main valve 210 and the valve shaft 220 are connected to each other by a screw Or they can be integrated with each other.
  • the main valve 210 functions to regulate the opening of the flow path formed between the first port 101 and the second port 102 in the body 100 described above.
  • the main valve 210 is not only switched between a fully opened state and a fully closed state, but serves to precisely control the opening of the flow path between the opened state and the closed state as illustrated in FIG. 9 And precise control of this opening degree can be performed by the pressure-sensitive portion 300 to be described later.
  • the pressure sensing unit 300 includes a pressure sensitive member 310 that is stretchable and contractible in response to a change in peripheral pressure.
  • the pressure sensing unit 300 includes a pressure sensing member 310, (100).
  • the pressure sensitive member 310 is affected by the refrigerant pressure of the third port 103, that is, the refrigerant pressure in the suction chamber of the variable capacity compressor, So that precise control can be performed.
  • the pressure sensitive member 310 when the pressure of the refrigerant applied to the pressure sensitive member 310 is high, the pressure sensitive member 310 is contracted, and when the pressure of the refrigerant is low, the pressure sensitive member 310 is extended .
  • the expansion and contraction of the pressure sensitive member 310 affects the position control of the valve part 200.
  • the driving unit 400 corresponds to a well-known solenoid driving mechanism including a coil and a plunger. Particularly, in the present invention, And a two-stage coil 410 made up of a small-diameter portion 411 and a small-diameter portion 412.
  • the two-stage coil 410 may be provided in a cylindrical casing 440, and reference numeral 401 denotes a seal provided on an outer circumferential surface of the driving unit 400.
  • the large-diameter portion 411 having an inner diameter larger than that of the small-diameter portion 412 is formed on the inner circumferential surface of the outer circumferential surface of the two-stage coil 410 about the entire length of the two- And is formed to have a length corresponding to 1/3 to 1/2.
  • the two-stage coil 410 can be formed by making the numbers of turns of the small-diameter portion 412 and the large-diameter portion 411 different from each other.
  • the plunger 420 is positioned so as to be inserted into the two-stage coil 410.
  • the plunger 420 is moved in accordance with the magnetic force of the two- will be.
  • the plunger 420 is positioned so as to be completely accommodated in the two-stage coil 410 described above, or is not located completely out of the two-stage coil 410 described above.
  • the reason that the plunger 420 is completely accommodated in the two-stage coil 410 is that the entire length of the two-stage coil 410 is overlapped to accommodate the entire length of the plunger 420 It means.
  • the fact that the plunger 420 is located completely out of the two-stage coil 410 means that the entire length of the two-stage coil 410 is positioned so that no part of the entire length of the plunger 420 overlaps .
  • the distance between the valve portion 200 and the plunger 420 is relatively close, which is good for accurately maintaining the concentricity or coaxiality between the components.
  • the plunger 420 is too far away from the coil, It is difficult to obtain a high driving force at a desired level.
  • the plunger 420 is positioned in the two-stage coil 410, so that the desired driving force of the plunger 420 can be obtained while maintaining the concentricity and coaxiality between the components accurately.
  • the left end of the plunger 420 is connected to the outer circumferential surface of the valve shaft 220 of the valve unit 200 and the right part of the plunger 420 is connected to the large diameter portion 411 of the two- As shown in FIG.
  • the position where the plunger 420 can be fully inserted to the right in the drawing is a position where the entirety of the two-stage coil 410, which is the large-diameter portion 411 formed in the two-stage coil 410, About 1/3 to 1/2 of the length.
  • a coil spring 450 is provided between the two-stage coil 410 and the plunger 420 so that the plunger 420 moves from the two-stage coil 410 to the left side in the drawing And is elastically supported to be spaced apart.
  • a separate step 421 for contacting the coil spring 450 may be formed on the outer circumferential surface of the plunger 420.
  • the valve shaft 220 is connected to the left end of the plunger 420 such that the valve shaft 220 is integrally movable with respect to the valve shaft 220. As the plunger 420 moves, The entire body 200 can be moved together.
  • the inner circumferential surface of the body 100 and the outer circumferential surface of the plunger 420 are spaced apart from each other to reduce the influence of the magnetic force, thereby reducing the frictional resistance And a sleeve 500 of a non-magnetic material interposed therebetween.
  • the sleeve 500 is made of a non-magnetic material in the form of a hollow pipe having a thickness of about 1 mm or less, more preferably 0.5 mm or less.
  • the gap between the inner circumferential surface of the body 100 and the outer circumferential surface of the plunger 420 can be maintained constant by the sleeve 500.
  • the yoke 120 made of a paramagnetic material is further added to the body portion 100 to extend the magnetic force formed in the driving portion 400 toward the left side in the drawing where the plunger 420 is located,
  • the sleeve 500 made of a nonmagnetic material is positioned between the yoke 120 made of a paramagnetic material and the plunger 420 made of a paramagnetic material in the driving part 400.
  • the sliding resistance between the plunger 420 and the yoke 120 is reduced by locating the sleeve 500 made of non-magnetic material between the plunger 420 and the yoke 120, The role is to be effective.
  • the present applicant has measured the sliding resistance generated between the plunger 420 and the yoke 120 while increasing or decreasing the thickness of the sleeve 500. As a result, even when the thickness of the sleeve 500 is 0.1 mm, Respectively.
  • the sliding resistance between the plunger 420 and the yoke 120 can be improved by appropriately changing the thickness of the sleeve 500 without reducing the driving force of the plunger 420 It is possible to appropriately reduce it.
  • the body 100 of the present invention includes a main body 110 having the first port 101 and the second port 102 formed therein, And a yoke (120) having the third port (103) and made of a paramagnetic material;
  • the sleeve 500 is interposed between the inner circumferential surface of the yoke 120 and the outer circumferential surface of the plunger 420.
  • a second port 102 may be formed, and the third port 103 may be formed in the yoke 120.
  • the pressure sensitive part 300 includes a bellows which is a pressure sensitive member 310 having an elastic body 311 therein, and is disposed in the plunger 420 Stage coil 410.
  • the other side of the core 430 may be selectively in contact with the valve 200 according to the elongation and contraction of the bellows.
  • first and second support members 312 and 313 are provided at both ends of the bellows, which is the pressure sensitive member 310 of the pressure sensitive part 300, and an elastic body 311 is provided so as to be elastically stretched in the bellows. .
  • the elastic body 311 elastically extends the pressure of the refrigerant.
  • the pressure of the refrigerant acting on the pressure sensitive member 310 is high, .
  • the pressure sensing part 300 may be disposed within the plunger 420 so that the plunger 420 may be formed in a housing shape to accommodate the pressure sensing part 300 .
  • a through hole 422 is formed in the circumferential surface of the plunger 420 so that the refrigerant pressure of the third port 103 is smoothly applied to the pressure sensing part 300 through the plunger 420 Will be good.
  • An adjustment screw 320 is connected to the second support member 313 on the right side of the pressure sensitive part 300.
  • the adjusting screw 320 is fixed to the inner circumferential surface of the core 430, and the adjusting screw 320 is rotated to change the engaging position. As a result, It is also possible to finely adjust the support position of the pressure sensitive member 310.
  • the first support member 312 provided on the left side of the pressure sensitive portion 300 may be selectively brought into contact with the valve portion 200 according to the expansion and contraction of the bellows as the pressure sensitive member 310 .
  • valve unit 200 basically acts on the elastic body 311, the plunger 420, and the pressure sensitive part 300 in a complex manner, It becomes possible to appropriately control it.
  • the sleeve 500 is supported by the core 430 and fixed in position.
  • the sleeve 500 is positioned between the outer circumferential surface of the plunger 420 and the inner circumferential surface of the yoke 120 of the body 100, and the sleeve 500 is integrally formed with the core 430 And the yoke 120 is integrally connected to the sleeve 500, it is possible to reduce the number of assembled parts.
  • a bypass passage 221 for connecting the first port 101 and the third port 103 is additionally formed in the valve portion 200 of the valve 200, It is preferable to perform the variable orifice function while the clearance with the valve seat 130 changes during forward and backward movement.
  • variable capacity compressor In a conventional conventional variable capacity compressor, a separate orifice is provided inside or outside the body of the variable capacity compressor in order to directly discharge the refrigerant in the crankcase into the suction chamber for the purpose of effective control of the compressor.
  • the opening orifice is not provided separately and has a fixed orifice shape having a constant diameter, the compression efficiency of the variable capacity compressor is greatly reduced due to the discharge of the refrigerant in the crankcase to the suction chamber even when the fixed orifice is not required. .
  • both the main valve 210 and the valve shaft 220 are formed as a hollow body in the valve unit 200, and the first port 101 and the third port 103 can communicate with each other
  • the bypass passage 221 is formed in the valve portion 200 so that the bypass passage 221 is formed.
  • bypass passage 221 is further formed in the valve shaft 220 as shown in FIG. 6 so that the inside of the valve portion 200 and the third port 103 are communicated with each other It would be desirable to be able to do so.
  • variable orifice composed of the first port 101, the valve seat 130 and the main valve 210, the bypass passage 221 of the valve shaft 220, and the third port 103 As shown in FIG.
  • variable orifice configured as described above is adapted to automatically discharge the refrigerant in the crank chamber to the suction chamber by adjusting the clearance between the valve portion 200 and the valve seat 130 when the valve portion 200 moves back and forth .
  • the opening degree between the main valve 210 and the valve seat 130 is appropriately adjusted even when the valve portion 200 moves forward and backward by the pressure sensitive portion 300 .
  • variable orifice to the control valve for the variable displacement compressor, it is possible to greatly improve the compression efficiency of the variable displacement compressor while eliminating the existing fixed orifice.
  • control valve for a variable capacity compressor of the present invention having the above-described structure, when no power is applied to the driving unit 400, when the amount of current is 100% applied to the driving unit 400, , And each case will be separately described below.
  • the driving unit 400 When the power is not applied to the control valve for the variable capacity compressor of the present invention, the driving unit 400 does not operate, and the plunger 420 moves to the left side in the drawing by the elastic force of the coil spring 450 only.
  • valve unit 200 including the main valve 210 moves to the left through the valve shaft 220 connected to the plunger 420.
  • the amount of refrigerant discharged from the variable displacement compressor is minimized by controlling the inclination angle of the swash plate to be as small as possible as the refrigerant pressure in the crank chamber rises in the variable displacement compressor, and the variable orifice is closed, The refrigerant is not discharged.
  • valve unit 200 including the main valve 210 moves to the right through the valve shaft 220 connected to the plunger 420.
  • the main valve 210 closes the flow path between the first port 101 and the second port 102 formed in the body portion 100 as shown in FIG. 8, There is no flow of coolant through the crankcase, and in this case, the variable orifice is opened to the maximum.
  • the amount of refrigerant discharged from the variable displacement compressor is maximized by controlling the inclination angle of the swash plate as large as possible as the refrigerant pressure in the crank chamber decreases in the variable displacement compressor.
  • the refrigerant is quickly discharged to the suction chamber, effectively increasing the compression efficiency.
  • control valve for the variable capacity compressor of the present invention is appropriately regulated and supplied with power, a proper amount of current is supplied to the driving unit 400.
  • the pressure of the refrigerant in the crankcase is applied to the pressure sensing part 300.
  • the entire valve portion 200 including the main valve 210 moves through the valve shaft 220 connected to the plunger 420 in accordance with the refrigerant pressure change in the suction chamber to the left or right in the drawing will be.
  • the main valve 210 appropriately adjusts the opening degree of the flow path between the first port 101 and the second port 102 formed in the body portion 100 as shown in FIG. 9, So that the amount of refrigerant discharged from the variable displacement compressor is optimized by controlling the slope angle of the swash plate to be suitably large or small while repeatedly raising or lowering the refrigerant pressure in the crank chamber.
  • variable orifice also appropriately adjusts the opening degree between the main valve 210 and the valve seat 130 in accordance with the movement of the valve unit 200, thereby improving the compression efficiency of the variable capacity compressor It will help.
  • the control valve for variable capacity compressors performing the basic operation as described above, since only a part of the plunger 420 is located in the two-stage coil 410 as shown in FIG. 6, The distance between the valve portions 200 is relatively short so that the desired driving force of the plunger 420 can be obtained while maintaining the concentricity and the coaxiality between the components accurately.
  • the present invention it is possible to obtain a high driving force even if only a part of the plunger 420 is placed in the two-stage coil 410 by adding the yoke 120 made of the paramagnetic material,
  • the sleeve 500 made of a non-magnetic material is positioned between the yoke 120 made of a box-like material and the plunger 420 made of a box-like material in the driving unit 400, so that the plunger 420 and the yoke 120 Thereby effectively reducing the sliding resistance acting on each other.
  • the sliding portion 500 reduces the influence of the magnetic force acting between the plunger 420 and the yoke 120 and reduces the influence of the magnetic force acting between the plunger 420 and the inner peripheral surface of the yoke 120, It is possible to effectively prevent the driving force of the plunger 420 from being reduced by effectively reducing the frictional resistance of the plunger 420.
  • variable orifice is integrally formed in the control valve for the variable displacement compressor, so that the refrigerant in the crank chamber can be quickly discharged to the suction chamber as required, thereby effectively increasing the compression efficiency.
  • the present invention can prevent the interference that may occur due to the turning of the center by increasing the concentricity and the coaxiality between the components by applying a two-stage coil for receiving and driving a part of the plunger in the control valve for the variable capacity compressor, By increasing the driving force, the valve control is performed with high accuracy. Particularly, by adding the non-magnetic material sleeve to the sliding portion, the influence by the magnetic force is reduced and the sliding resistance is reduced. And to maximize market competitiveness while increasing commerciality.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Magnetically Actuated Valves (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

La présente invention concerne une soupape de régulation pour un compresseur à capacité variable, et plus particulièrement un dispositif pour : augmenter simultanément la concentricité entre des parties et augmenter la puissance d'entraînement en appliquant, à la soupape de régulation pour un compresseur à capacité variable, une bobine à deux étages destinée à recevoir une partie d'un plongeur et en excitant celle-ci ; et réaliser plus en douceur une opération en ajoutant un manchon constitué d'un matériau non magnétique. La présente invention se rapporte à la soupape de régulation, qui est reliée à un compresseur à capacité variable ayant une chambre de vilebrequin, une chambre de refoulement et une chambre d'aspiration et comprenant un disque en nutation disposé dans la chambre de vilebrequin, de manière à commander l'angle d'inclinaison du disque en nutation par le biais de la commutation d'un trajet d'écoulement de réfrigérant, la soupape de régulation comprenant : une partie de corps creux (100) dotée d'un premier orifice (101), d'un deuxième orifice (102) et d'un troisième orifice (103), lesquels communiquent respectivement avec la chambre de vilebrequin, la chambre de refoulement et la chambre d'aspiration ; une partie de soupape (200) comprenant une soupape principale (210) positionnée de manière à pouvoir se déplacer le long de la direction longitudinale à l'intérieur de la partie de corps (100), permettant ainsi de régler le degré d'ouverture d'un trajet d'écoulement formé entre le premier orifice (101) et le deuxième orifice (102) ; une partie sensible à la pression (300) comprenant un élément sensible à la pression (310) qui peut être étendu et contracté en fonction de la variation de pression du troisième orifice (103) de manière à corriger la position de la partie de soupape (200) ; une partie d'excitation (400) comprenant la bobine à deux étages (410), qui comprend une portion de grand diamètre en forme d'escalier (411) et une portion de petit diamètre (412) ayant des diamètres intérieurs différents et qui produit une force magnétique correspondant à la quantité d'un courant électrique fourni, et un plongeur (420) dont une extrémité est reliée à la partie de soupape (200) et une portion de l'autre côté est insérée dans la portion de grand diamètre (411) de la bobine à deux étages (410) de manière à être apte à avancer et à se rétracter ; et le manchon (500), qui est constitué du matériau non magnétique et interposé de manière à maintenir un état dans lequel un interstice est formé entre la surface périphérique interne de la partie de corps (100) et la surface périphérique externe du plongeur (420), de sorte que l'influence de la force magnétique est réduite, réduisant ainsi la résistance à la friction. Par conséquent, la présente invention permet d'empêcher à l'avance la génération d'interférences puisque son centre est décalé, de commander la soupape avec une grande précision et, plus spécifiquement, permet de maximiser la compétitivité sur le marché tout en augmentant la fiabilité et l'aptitude à la commercialisation d'un produit.
PCT/KR2018/014242 2017-11-20 2018-11-20 Soupape de régulation pour compresseur à capacité variable WO2019098804A1 (fr)

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KR10-2017-0155052 2017-11-20

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CN111271486A (zh) * 2020-03-01 2020-06-12 东莞海特帕沃液压科技有限公司 一种减压阀

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KR20240063626A (ko) 2022-11-03 2024-05-10 동아대학교 산학협력단 유압 압축기용 유로절환밸브

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CN111271486B (zh) * 2020-03-01 2023-04-07 山东东阀制冷科技有限公司 一种减压阀

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