KR101815634B1 - Electric control valve of variable displacement compressor - Google Patents

Electric control valve of variable displacement compressor Download PDF

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Publication number
KR101815634B1
KR101815634B1 KR1020150190660A KR20150190660A KR101815634B1 KR 101815634 B1 KR101815634 B1 KR 101815634B1 KR 1020150190660 A KR1020150190660 A KR 1020150190660A KR 20150190660 A KR20150190660 A KR 20150190660A KR 101815634 B1 KR101815634 B1 KR 101815634B1
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KR
South Korea
Prior art keywords
pressure port
valve
control valve
electronic control
guide
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KR1020150190660A
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Korean (ko)
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KR20170079755A (en
Inventor
황만익
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주식회사 뉴로스
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Priority to KR1020150190660A priority Critical patent/KR101815634B1/en
Priority to PCT/KR2016/015537 priority patent/WO2017116194A1/en
Publication of KR20170079755A publication Critical patent/KR20170079755A/en
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Publication of KR101815634B1 publication Critical patent/KR101815634B1/en

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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
    • F04B27/10—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 having stationary cylinders
    • F04B27/1009—Distribution members
    • 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
    • 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
    • F04B27/0804—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 having rotary cylinder block
    • F04B27/0821—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 having rotary cylinder block component parts, details, e.g. valves, sealings, lubrication
    • F04B27/0839—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 having rotary cylinder block component parts, details, e.g. valves, sealings, lubrication valve means, e.g. valve plate
    • 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
    • F04B27/10—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 having stationary cylinders
    • 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
    • F04B27/16—Control of pumps with stationary cylinders
    • F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • 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
    • F04B27/20—Control of pumps with rotary cylinder block
    • F04B27/22—Control of pumps with rotary cylinder block by varying the relative positions of a swash plate and a cylinder block
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • 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
    • 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
    • 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
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The present invention relates to an electronic control valve of a variable capacity compressor, and more particularly to a valve body in which a crank chamber pressure port, a discharge pressure port and a suction pressure port are formed, and a valve body in which the discharge pressure port is connected to the crank chamber pressure port And a hollow guide which opens only one of the first passage connected to the crank chamber pressure port and the second passage connected to the suction pressure port, and a solenoid closing the other side of the valve portion In the electronic control valve, a variable capacity compressor having improved linearity of pressure and improved precision of control by being formed to be able to adjust the bellows tension so that the guide is resiliently supported to the solenoid side by rotation of a tension adjusting portion closing one end of the valve portion To an electronic control valve.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electronic control valve for a variable displacement compressor,

The present invention relates to an electronic control valve of a variable capacity compressor, and more particularly to a valve body in which a crank chamber pressure port, a discharge pressure port and a suction pressure port are formed, and a valve body in which the discharge pressure port is connected to the crank chamber pressure port And a hollow guide which opens only one of the first passage connected to the crank chamber pressure port and the second passage connected to the suction pressure port, and a solenoid closing the other side of the valve portion In the electronic control valve, a variable capacity compressor having improved linearity of pressure and improved precision of control by being formed to be able to adjust the bellows tension so that the guide is resiliently supported to the solenoid side by rotation of a tension adjusting portion closing one end of the valve portion To an electronic control valve.

2. Description of the Related Art Generally, an air conditioner for an automobile includes a variable capacity compressor which is driven by an engine and compresses a refrigerant and whose discharge amount is changed according to a cooling demand amount, a condenser which condenses the refrigerant discharged from the compressor, An electronic expansion valve which is expanded to change a degree of opening according to an amount of refrigerant discharged from the compressor and a state in which a gas and a liquid are mixed with each other and a latent heat of evaporation when the refrigerant is vaporized to cool the ambient air and then return the refrigerant to the compressor An evaporator, and a control unit for controlling a refrigerant discharge amount of the compressor according to an air conditioning environment such as an indoor temperature and an outdoor temperature input from various sensors installed in the indoor and outdoor of the vehicle, and an air conditioning condition input by the user.

When the air conditioner configured as described above is operated, the controller controls the air conditioner such as the indoor air temperature and the outdoor temperature transmitted from the various sensors, the indoor air temperature set by the user, the function of heating or cooling, The refrigerant discharge amount is changed.

In the above-described air conditioner, the variable displacement swash plate type compressor generally uses a pressure control valve for adjusting the inclination angle of the swash plate to control the refrigerant discharge amount. Recently, an electronic control valve (Hereinafter referred to as " ECV ").

In the case of the variable displacement swash plate type compressor in which the ECV is adopted, the slope of the swash plate is changed by the ECV duty or the applied current value to the ECV, and the refrigerant discharge amount of the compressor is determined according to the slope of the swash plate.

Related technology is disclosed in Korean Patent Publication No. 2011-0040207 (published on Apr. 20, 2011, titled: drive control method of variable capacity swash plate type compressor).

On the other hand, although the electromagnetic control valve used in the variable capacity compressor as described above is slightly different in structure depending on the structure of the compressor and the like, the basic principle is almost the same, Will now be described. The configuration of such a control valve is also substantially known, and will be schematically described as a part mainly related to the present invention.

An example of an electronic control valve of a conventional variable capacity compressor shown in Fig. 1 is developed by a Japanese company T, and a relief valve 40 is provided inside the crank chamber pressure port 21, the discharge pressure port 22 A valve body 20 formed with a suction pressure port 23, and a solenoid 30.

1 (a), when the solenoid 30 is turned on, the suction pressure port 23 is communicated from the crank chamber pressure port 21 to the solenoid 30 The crank chamber pressure port 21 is communicated from the discharge pressure port 22 as shown in FIG. 1 (b).

An example of such an electronic control valve of the conventional variable capacity compressor has an advantage that the cost is low.

Another example of the conventional electronic control valve of the variable capacity compressor shown in Fig. 2 is developed by a company E of Japan. The bellows 70 is provided inside the bellows 70, And a suction port 53 formed with a crank chamber pressure port 51, a discharge pressure port 52, and a suction pressure port 53. The crank chamber pressure port 51, the discharge pressure port 52, (50), and a solenoid (60).

2 (a), when the solenoid 60 is turned on, the suction pressure port 53 communicates with the crank chamber pressure port 51, and the solenoid 60 The crank chamber pressure port 51 communicates with the discharge pressure port 52 as shown in FIG. 2 (b).

Accordingly, the electronic control valve of the conventional variable capacity compressor can control the discharge refrigerant amount by adjusting the inclination angle of the swash plate through the crank chamber pressure through the above-described operation.

However, an example of an electronic control valve of a conventional variable capacity compressor developed by a Japanese company T has a disadvantage in that a solenoid of a large capacity is required, linearity with respect to pressure change is low, and hysteresis is wide.

Another example of a conventional electronic control valve of a conventional variable capacity compressor developed by E company of Japan is that a bellows is welded to be a vacuum and the bellows dimension and the tension of the spring tension are required due to their characteristics, There were disadvantages.

In addition, the electronic control valve of Company E has a limitation in adjusting the bellows tension so that when the pressure control characteristic is out of the specification range of the hysteresis curve, it is externally adjusted and positioned within the range.

In addition, the electronic control valve of Company E has a structure in which the upper and lower caps are separated from each other in the bellows by a spring. When the valve is moved in the vertical direction, there is no separate guide member. There is a disadvantage that the relief reaction speed is slowed as pressure is leaked to the generated gap.

Korean Patent Laid-Open No. 2011-0040207 (published on April 20, 2011, entitled "Driving Control Method of Variable Capacity Swash Compressor")

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above problems, and it is an object of the present invention to provide a crankcase pressure port, a discharge pressure port and a suction pressure port, And a hollow guide for opening only one of the first passage connected to the crank chamber pressure port and the second passage connected to the suction pressure port, and a solenoid closing the other side of the valve portion Wherein the bellows tension adjusting means is capable of adjusting the bellows tension so that the guide is resiliently supported to the solenoid side by rotation of a tension adjusting portion for closing one end of the valve portion, And to provide an electronic control valve of a capacity compressor.

It is a further object of the present invention to provide a valve device in which a valve rod disposed in the bellows is inserted into a through hole formed in a support portion fixed to an inner circumferential surface of the valve body so as to be horizontally and horizontally coaxial with the guide, So that the crank chamber pressure can be stably and quickly discharged to the suction pressure port.

The electronic control valve 1 (ECV) of the variable capacity compressor of the present invention is constituted by a hollow body and is connected to the crank chamber pressure port (Pc) so that the crank chamber pressure Pc, the discharge pressure Pd, A valve body 100 formed with a discharge pressure port 120 and a suction pressure port 130 and sealed at one side in the longitudinal direction by a tension adjusting portion 710; A solenoid 200 for closing the other side of the valve body 100 and applying a current to the plunger 220 and the push rod 230 in the longitudinal direction by a magnetic field formed in the coil 210; A first passage 310 fixed to one end of the push rod 230 and communicating with the crank chamber pressure port 110 and connected to the crank chamber pressure port 110 from the discharge pressure port 120; And a second passage (320) connected to the suction pressure port (130) from the crankcase pressure port (110); The valve body 100 has a through hole 510 formed at one side thereof and extending in the longitudinal direction and inserted into the through hole 510 of the support 500 fixed to the inner peripheral surface of the valve body 100, A valve rod 400 coupled to an inner circumferential surface of the inner space of the inner tube 410 so as to be in contact with an outer circumferential surface on one side in the longitudinal direction of the guide 300; A bellows 600 elastically supporting the guide 300 toward the solenoid 200 and having the valve rod 400 disposed therein; And is formed to include a plurality of protrusions.

The electromagnetic control valve 1 includes an adjusting nut 720 coupled to one end of the valve rod 400 located in the space between the support part 500 and the tension adjusting part 710, And a first spring 730, which is an elastic body, which is in contact with the tension adjusting unit 710 and the adjusting nut 720.

The electromagnetic control valve 1 may adjust the tension of the bellows 600 primarily by rotating the adjusting nut 720 before assembling the tension adjusting part 710.

The electromagnetic control valve 1 can finely adjust the tension of the bellows 600 by rotating the tension adjusting unit after the tension adjusting unit 710 is assembled.

The relief adjusting unit 410 and the guide 300 are coupled with each other in a metal contact state so that when the relief function is performed, the relief adjusting unit 410 and the guide 300 are momentarily So that the crank chamber pressure Pc can be introduced into the space between the crank chamber pressure Pc and the suction pressure port 130. [

In addition, when the relief function is performed, the electromagnetic control valve 1 may move the relief adjusting unit and the bellows 600 together.

The electromagnetic control valve 1 controls the moving direction of the guide 300 according to an electrical signal applied to the solenoid 200 and moves the guide 300 toward the solenoid 200, When the passage 310 is opened, the discharge pressure Pd is transmitted to the crank chamber pressure port 110, and the guide 300 moves toward the tension adjusting portion 710, The crank chamber pressure Pc can be transmitted to the suction pressure port 130. [

The electromagnetic control valve 1 may further include a second spring 620, which is an elastic body, on the inner circumference of the bellows 600.
The electronic control valve 1 (ECV) of the variable capacity compressor according to the present invention is formed of a hollow body and has a crank chamber pressure Pc, a discharge pressure Pd, and a suction pressure Ps, (110), a discharge pressure port (120), and a suction pressure port (130), the valve body (100) having one side thereof sealed by a tension regulating portion (710); A solenoid 200 for closing the other side of the valve body 100 and applying a current to the plunger 220 and the push rod 230 in the longitudinal direction by a magnetic field formed in the coil 210; A first passage 310 fixed to one end of the push rod 230 and communicating with the crank chamber pressure port 110 and connected to the crank chamber pressure port 110 from the discharge pressure port 120; And a second passage (320) connected to the suction pressure port (130) from the crankcase pressure port (110); A rod insertion portion of the tension adjusting portion 710 inserted into the through hole 510 of the support portion 500 whose edge is fixed in contact with the inner circumferential surface of the valve body 100, A valve rod 400 inserted into the hole 711 and coupled to an inner circumferential surface of the inner space of the relief adjusting portion 410 formed on the other side in the longitudinal direction of the guide 300 so as to be in contact with the outer circumferential surface; The guide 300 is elastically supported to the solenoid 200 side and the valve rod 400 is disposed therein so that one end in the longitudinal direction is coupled to the support portion 500 and the other end is connected to the bellows 400 coupled to the valve rod 400, (600); And a second spring 620 which is an elastic body whose both ends in the longitudinal direction are supported in contact with the tension adjusting portion 710 and the valve rod 400. The tension adjusting portion 710 includes a valve body 100 ). ≪ / RTI >

Accordingly, the electromagnetic control valve of the variable capacity compressor according to the present invention is formed so that the bellows tension can be adjusted so that the guide is resiliently supported to the solenoid side by rotation of the tension adjusting portion closing one end of the valve portion, Precision can be improved.

In addition, according to the present invention, the tension of the bellows is adjusted primarily through the adjustment nut coupled to the end of the valve rod before assembly, and the tension of the bellows is finely adjusted by rotating the tension adjuster after assembly. It is possible to compensate for the error even when an error occurs, and the tension precision of the bellows can be improved.

This makes it possible to adjust the pressure characteristic of the electronic control valve to be within the specification range of the hysteresis curve even after assembly.

Further, in the electronic control valve of the variable capacity compressor according to the present invention, the valve rod disposed in the bellows is inserted into the through hole formed in the support portion fixed in contact with the inner peripheral surface of the valve body, The crank chamber pressure can be reliably and quickly discharged to the suction pressure port.

1 is a cross-sectional view showing an electronic control valve of a conventional variable capacity compressor.
2 is a cross-sectional view showing another electronic control valve of a conventional variable capacity compressor.
3 is a cross-sectional view showing an electronic control valve of a variable capacity compressor according to the present invention.
4 is a sectional view showing a solenoid in an electronic control valve of a variable capacity compressor according to the present invention.
5 is a cross-sectional view showing a state in which the solenoid is turned off in the electronic control valve of the variable capacity compressor according to the present invention.
6 is a cross-sectional view showing a relief reaction in an electronic control valve of a variable capacity compressor according to the present invention.
7 and 8 are cross-sectional views illustrating an electronic control valve of another variable capacity compressor according to the present invention.

Hereinafter, the electromagnetic control valve 1 of the variable capacity compressor according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention generally relates to an electronic control valve (1) which is provided in a variable capacity compressor constituting an automotive air conditioner and changes a discharge capacity of a refrigerant by controlling a pressure of a crank chamber to adjust an inclination angle of a swash plate, The valve body 100, the solenoid 200, the guide 300, the valve rod 400 and the bellows 600. Hereinafter, the rest of the configuration except for the solenoid 200 will be collectively referred to as a valve portion.

The valve body 100 is formed of a hollow body so that the crank chamber pressure Pc, the discharge pressure Pd, and the suction pressure Ps act on the crankcase chamber 100, The pressure port 110, the discharge pressure port 120 and the suction pressure port 130 are formed, and one side of the pressure port 110 is formed in the longitudinal direction by the tension adjusting portion 710.

3, the valve body 100 is provided with three types of holes made up of the crank chamber pressure port 110, the discharge pressure port 120, and the suction pressure port 130, A plurality of holes may be formed at regular intervals.

In the valve body 100, a decompression chamber in which a bellows 600, which will be described later, is formed is formed inside the region where the crankcase pressure port 110 is formed. A solenoid 200 is provided on the other side in the longitudinal direction of the valve body 100 so that both the tension adjusting portion 710 and the solenoid 200 seal the both sides of the valve body 100 in the longitudinal direction.

The solenoid 200 is connected to the push rod 230 and moves integrally with the plunger 220. The fixed core 240 is another magnetic member fixed on one side of the plunger 220, A coil 210 provided around the plunger 220 and the fixed core 240 to form a magnetic field according to the amount of current controlled by a separate control unit (not shown), and a plate 250 And a housing 260. As shown in Fig.

When the solenoid 200 is turned on, a magnetic field is formed to horizontally move the plunger 220 and the push rod 230 to the left as shown in FIG. 4. When the solenoid 200 is turned off, The plunger 220 and the push rod 230 are horizontally moved to the right as shown in FIG.

The guide 300 is fixed to one end of the push rod 230 and horizontally moves left and right according to ON / OFF of the solenoid 200. The guide 300 is interlocked with the movement of the push rod 230, .

The guide 300 is formed in a hollow pipe shape and has a communication path 330 communicating the inside and the outside at one side in the longitudinal direction so that the crank chamber pressure port 110 and the inside of the guide 300 So that they can communicate with each other.

The guide 300 is coupled to the end of the push rod 230 in the longitudinal direction and is configured to allow the refrigerant to flow longitudinally therebetween even when the guide 300 is engaged with the push rod 230, A separate flow path forming part may be further installed between the inner circumferential surface of the guide 300 and the outer circumferential surface of the push rod 230. [

At this time, the guide 300 may have a separate structure in which the communication path 330 is formed. In the first guide 301 coupled to the push rod 230, the communication path 330 May be inserted and coupled to the second guide 302.

The guide 300 is in close contact with the inner circumferential surface of the valve body 100 and is slid in the longitudinal direction. The guide 300 is connected to the crank chamber pressure port 110 through the discharge pressure port 120, Only one of the passage 310 and the second passage 320 connected to the suction pressure port 130 from the crankcase pressure port 110 is opened.

4, when the solenoid 200 is turned on and the push rod 230 is moved to the left side, the guide 300 is also moved to the left side, so that the discharge pressure port 120 And the second passage 320 is opened.

5, when the push rod 230 is moved to the right by the solenoid 200 being turned off, the guide 300 is also moved to the right side, and the suction pressure port 130 Is closed and the first passage 310 is opened.

The valve rod 400 is inserted into the through hole 510 of the supporter 500 fixed to the inner peripheral surface of the valve body 100 with an edge thereof extending in the longitudinal direction, One side is inserted in the longitudinal direction.

A relief adjusting part 410 is formed on the other side of the valve rod 400 to be in contact with an outer circumferential surface of one side in the longitudinal direction of the guide 300, that is, the outer edge of the end of the second guide 302.

Particularly, the relief adjusting part 410 has a predetermined space formed therein and the outer edge of the end portion of the second guide 302 is in contact with the inner circumferential surface, and when the relief reaction occurs, And the crank chamber pressure Pc is introduced therebetween, so that the crank chamber pressure Pc is discharged to the suction pressure port 130 through the internal passage of the guide 300.

Next, the bellows 600 is provided in the depressurizing chamber formed inside the crank chamber pressure port 110, and is hollowed with a thin metal material to be corrugated.

One end in the longitudinal direction of the bellows 600 is coupled to the support portion 500 and the other end is coupled to the relief adjusting portion 410 of the valve rod 400, The portions 410 can be interlocked with each other.

The other end of the bellows 600 is coupled to the relief adjuster 410 and the relief adjuster 410 is coupled to one end of the guide 300 to guide the guide 300 to the solenoid 200) side.

A second spring 620 may be additionally provided on the inner circumference of the bellows 600 so that the second spring 620 together with the bellows 600 guides the guide 300 to the solenoid The force of elastic support to the side of the base 200 can be compensated.

Particularly, the electronic control valve 1 of the variable capacity compressor according to the present invention includes an adjusting nut 720 coupled to one end of the valve rod 400 located in the space between the support part 500 and the tension adjusting part 710, And a first spring 730 that is an elastic body having both ends thereof connected to the tension adjusting portion 710 and the adjusting nut 720 in the longitudinal direction thereof.

The tension of the bellows 600 may be adjusted primarily by rotating the adjusting nut 720 before assembling the tension adjusting unit 710. [ That is, when the valve rod 400 is finely moved to the left in the drawing, the bellows 600 is reduced in length by the adjustment nut 720 and the solenoid 200 The load of the solenoid 200 becomes large.

When the valve rod 400 is moved to the right side in the drawing, the bellows 600 is further elongated and the solenoid 200 is moved to the right by the adjustment nut 720, The load on the solenoid 200 is reduced.

In addition, the electromagnetic control valve 1 can finely adjust the tension of the bellows 600 by rotating the tension adjusting unit even after the tension adjusting unit 710 is assembled.

When the first spring 730 is tightened, a force is applied to the first spring 730, and when the first spring 730 is loosened, As shown in Fig.

When the valve rod 400 is finely moved to the right side in the drawing, the bellows 600 is elongated by a predetermined length and the solenoid 200 The load of the solenoid 200 becomes large.

The electromagnetic control valve 1 further reduces the bellows 600 when the tension adjusting unit 710 is further loosened and the valve rod 400 is moved to the left side in the drawing, The load on the solenoid 200 is reduced.

Accordingly, even if an error occurs in the dimension of the bellows 600, the present invention can compensate for this, and the tension precision of the bellows 600 can be improved. That is, the present invention can be adjusted so that the pressure characteristic of the electromagnetic control valve 1 can be positioned within the specification range of the hysteresis curve even after assembly.

7, the electronic control valve 1 includes a valve body support portion 501 in which the support portion 500 is fixed in contact with the inner circumferential surface of the valve body 100, And an auxiliary tension adjusting portion 502 inserted into the space between the support portion 501 and the valve rod 400 and formed with threads on the outer circumferential surface thereof and screwed to the valve body support portion 501.

At this time, before assembling the tension adjusting unit 710, the electronic control valve 1 rotates the auxiliary tension adjusting unit 502 to primarily adjust the tension of the bellows 600, 720 may be used in a configuration that only supports the first spring.

8, the valve rod 400 of the electromagnetic control valve 1 is formed in a shape of a column extending in the longitudinal direction and having an edge formed on an inner peripheral surface of the valve body 100 A relief adjusting portion 410 inserted into the rod insertion hole 711 of the tension adjusting portion 710 inserted into the through hole 510 of the fixed support 500 in contact with the fixed support portion 500, The outer circumferential surface of the guide 300 may be in contact with the outer circumferential surface of the guide 300 in the longitudinal direction. The bellows 600 has one end in the longitudinal direction coupled to the support portion 500 and the other end coupled to the valve rod 400. The second spring 620 as an elastic body has both ends in the longitudinal direction, And the tension adjusting portion 710 may be a screw screwed to the valve body 100. [

In this case, the tension of the bellows 600 can be adjusted by rotating the tension adjusting unit 710 after the electronic control valve 1 is assembled.

Hereinafter, the operation of the electromagnetic control valve 1 according to the present invention having the above-described configuration will be described.

4 and 5 illustrate a state in which the solenoid 200 is turned on when the cooling load is normal, that is, when the air conditioner normally operates without overloading, FIG. 5 shows a state in which the solenoid 200 It is off.

The plunger 220 and the push rod 230 are moved to the right in the drawing and the guide 300 connected to the end of the push rod 230 is moved to the right The bellows 600 and the second spring 620 are elastically stretched.

At this time, the discharge pressure port 120 is opened while the inner peripheral surface of the valve body 100 in the region where the discharge pressure port 120 is formed is separated from the outer peripheral surface of the guide 300, The suction pressure port 130 is closed while the end portion of the solenoid 200 contacts the fixed core 240 of the solenoid 200.

As a result, the crank chamber pressure port 110 connected to the crank chamber of the variable displacement compressor and the discharge pressure port 120 communicate with the discharge pressure port 120 through the depressurization chamber, Is moved to the crank chamber pressure port (110) and the pressure inside the crank chamber is controlled.

Through this process, the discharge pressure Pd is introduced into the crank chamber, and the pressure inside the crank chamber becomes larger than the pressure of the suction pressure port 130, so that the swash plate inclination of the variable displacement compressor becomes small.

Thereafter, when the solenoid 200 is turned on, the plunger 220 and the push rod 230 move to the left in the drawing, and the bellows 600 and the second spring 620 are elastically contracted.

At this time, the discharge pressure port 120 is closed while the inner peripheral surface of the valve body 100 in the region where the discharge pressure port 120 is formed is in contact with the outer peripheral surface of the guide 300, The suction pressure port 130 is opened while being separated from the fixed core 240 of the solenoid 200.

As a result, the crank chamber pressure port (Pc) port connected to the crank chamber of the variable capacity compressor and the suction pressure port 130 are communicated with each other through the internal passage of the pressure reducing chamber and the guide 300, Is sent to the suction pressure port (130).

Through the above operation, the electronic control valve 1 controls the crank chamber pressure Pc of the variable displacement compressor to adjust the discharge refrigerant amount by adjusting the swash plate inclination angle.

Next, Fig. 6 is a view showing a state in which a relief valve (not shown) which is a function for promptly discharging the liquid refrigerant in the crank chamber to the suction pressure port 130 in order to start the air conditioner operation, And the reaction occurs.

At this time, a controlled constant current is supplied to the coil 210 of the solenoid 200 by the control unit, and the plunger 220 moves to the left in the drawing.

When the inner circumferential surface of the valve body 100 in the region where the discharge pressure port 120 is formed is close to the outer circumferential surface of the guide 300 and the gap is maintained at a constant distance, the right end of the guide 300 contacts the solenoid 200, The suction pressure port 130 is opened while the suction pressure Ps is continuously applied to the relief adjusting portion 410. When the suction pressure Ps is higher than the suction pressure Ps, A slight gap is generated between the relief adjusting portion 410 and the guide 300 which are in contact with each other and the crank chamber pressure Pc in the decompression chamber instantaneously enters through the clearance, And then flows out to the suction pressure port 130 through the flow path.

As a result, the slope of the swash plate becomes larger and the maximum variable capacity can be ensured. As a result, the air conditioner performance can be exhibited at the maximum variable capacity simultaneously with the operation of the air conditioner.

When the indoor air becomes cooler after a certain period of time after the air conditioner is operated, the current supplied to the coil 210 is gradually decreased by the control of the control unit, and the solenoid 200 is turned off, .

Particularly, in the electronic control valve 1 of the variable capacity compressor according to the present invention, the valve rod 400 disposed inside the bellows 600 is formed in the support part 500 fixed to the inner peripheral surface of the valve body 100, And is horizontally moved coaxially with the guide 300 without being shaken in the vertical direction during the relief reaction by inserting the crank chamber pressure Pc into the through hole 510, And can be discharged quickly.

The electromagnetic control valve 1 of the variable capacity compressor according to the present invention is configured such that the guide 300 is elastically supported to the solenoid 200 side by the rotation of the tension adjusting portion 710 for closing one end of the valve portion 600), it is possible to improve the pressure linearity and the precision of the control.

That is, according to the present invention, the tension of the bellows 600 is adjusted primarily through the adjusting nut 720 coupled to the end of the valve rod 400 before assembly, and after the assembly, the tension adjusting portion 710 is rotated, The tension of the bellows 600 can be compensated for even if an error occurs in the dimension of the bellows 600 and the tension precision of the bellows 600 can be improved.

Thereby, the present invention can be adjusted so that the pressure characteristic of the electronic control valve 1 can be positioned within the specification range of the hysteresis curve even after assembly.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It goes without saying that various modifications can be made.

1: Electronic control valve of variable capacity compressor
100: Valve body
110: crank chamber pressure port 120: discharge pressure port
130: Suction pressure port
Pc: Crankcase pressure Pd: Discharge pressure
Ps: Suction pressure
200: Solenoid
210: coil 220: plunger
230: push rod 240: stationary core
250: plate 260: housing
300: Guide
301: first guide 302: second guide
310: first passage 320: second passage
330:
400: Valve rod 410: Relief control part
500: Support part 510: Through hole
600: Bellows 620: Second spring
710: tension adjusting portion 720: adjusting nut
730: first spring

Claims (11)

In the electronic control valve 1 (ECV) of the variable displacement compressor,
The crank chamber pressure port 110, the discharge pressure port 120, and the suction pressure port 130 are made of a hollow body so that the crank chamber pressure Pc, the discharge pressure Pd, and the suction pressure Ps, A valve body 100 which is closed at one side in the longitudinal direction by a tension adjusting portion 710;
A solenoid 200 for closing the other side of the valve body 100 and applying a current to the plunger 220 and the push rod 230 in the longitudinal direction by a magnetic field formed in the coil 210;
A first passage 310 fixed to one end of the push rod 230 and communicating with the crank chamber pressure port 110 and connected to the crank chamber pressure port 110 from the discharge pressure port 120; And a second passage (320) connected to the suction pressure port (130) from the crankcase pressure port (110);
The valve body 100 has a through hole 510 formed in a columnar shape extending in the longitudinal direction and inserted into the through hole 510 of the support 500 fixed to the inner peripheral surface of the valve body 100, A valve rod 400 coupled to an inner circumferential surface of the inner space of the inner tube 410 so as to be in contact with an outer circumferential surface on one side in the longitudinal direction of the guide 300;
A bellows 600 elastically supporting the guide 300 toward the solenoid 200 and having the valve rod 400 disposed therein;
An adjustment nut 720 coupled to one end of the valve rod 400 located in the space between the support part 500 and the tension adjusting part 710; And
A first spring 730 which is an elastic body having both ends thereof connected to the tension adjusting portion 710 and the adjusting nut 720 in the longitudinal direction;
And an electromagnetic control valve for controlling the valve of the variable capacity compressor.
delete The method according to claim 1,
The electronic control valve (1)
Wherein the tension of the bellows (600) is adjusted primarily by rotating the adjusting nut (720) before assembling the tension adjusting part (710).
The method of claim 3,
The electronic control valve (1)
After the tension adjusting unit 710 is assembled, the tension adjusting unit 710 is rotated to finely adjust the tension of the bellows 600,
Wherein the tension adjusting unit (710) is a screw.
The method according to claim 1,
The electronic control valve (1)
A valve body support portion 501 in which the support portion 500 is fixed in contact with the inner circumferential surface of the valve body 100,
And an auxiliary tension adjusting part 502 inserted into the space between the valve body supporting part 501 and the valve rod 400 and formed with threads on the outer circumferential surface and screwed to the valve body supporting part 501 Wherein the variable displacement compressor comprises:
The method according to claim 1,
The electronic control valve (1)
The relief adjusting portion 410 and the guide 300 are coupled with each other in a metal contact state,
The relief adjusting unit 410 and the guide 300 are momentarily separated to allow the crank chamber pressure Pc to flow into the space between the relief adjusting unit 410 and the guide 300 and to be transmitted to the suction pressure port 130. [ Capacitor compressor electronic control valve.
The method according to claim 6,
The electronic control valve (1)
Wherein the relief adjusting unit (410) and the bellows (600) move in conjunction with each other when the relief function is performed.
The method according to claim 1,
The electronic control valve (1)
The moving direction of the guide 300 is adjusted according to an electrical signal applied to the solenoid 200,
When the guide 300 moves toward the solenoid 200 and the first passage 310 is opened, the discharge pressure Pd is transmitted to the crank chamber pressure port 110,
Wherein the crankcase pressure Pc is transferred to the suction pressure port 130 when the guide 300 moves toward the tension adjusting portion 710 and the second passage 320 is opened. Capacitor compressor electronic control valve.
The method according to claim 1,
The electronic control valve (1)
And a second spring (620), which is an elastic body, is further provided on an inner circumference of the bellows (600).
In the electronic control valve 1 (ECV) of the variable displacement compressor,
The crank chamber pressure port 110, the discharge pressure port 120, and the suction pressure port 130 are made of a hollow body so that the crank chamber pressure Pc, the discharge pressure Pd, and the suction pressure Ps, A valve body 100 which is closed at one side in the longitudinal direction by a tension adjusting portion 710;
A solenoid 200 for closing the other side of the valve body 100 and applying a current to the plunger 220 and the push rod 230 in the longitudinal direction by a magnetic field formed in the coil 210;
A first passage 310 fixed to one end of the push rod 230 and communicating with the crank chamber pressure port 110 and connected to the crank chamber pressure port 110 from the discharge pressure port 120; And a second passage (320) connected to the suction pressure port (130) from the crankcase pressure port (110);
A rod insertion portion of the tension adjusting portion 710 inserted into the through hole 510 of the support portion 500 whose edge is fixed in contact with the inner circumferential surface of the valve body 100, A valve rod 400 inserted into the hole 711 and coupled to an inner circumferential surface of the inner space of the relief adjusting portion 410 formed on the other side in the longitudinal direction of the guide 300 so as to be in contact with the outer circumferential surface;
The guide 300 is elastically supported to the solenoid 200 side and the valve rod 400 is disposed therein so that one end in the longitudinal direction is coupled to the support portion 500 and the other end is connected to the bellows 400 coupled to the valve rod 400, (600); And
A second spring 620 that is an elastic body having both ends thereof held in the longitudinal direction in contact with the tension adjusting portion 710 and the valve rod 400; , ≪ / RTI >
Wherein the tension adjusting unit (710) is a screw screwed to the valve body (100).
11. The method of claim 10,
The electronic control valve (1)
Wherein the tension adjusting unit (710) is rotated after the tension adjusting unit (710) is assembled to finely adjust the tension of the bellows (600).
KR1020150190660A 2015-12-31 2015-12-31 Electric control valve of variable displacement compressor KR101815634B1 (en)

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KR102654757B1 (en) 2019-02-07 2024-04-04 현대자동차주식회사 Clutch current control circuit and electric control valve having the same
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KR100987042B1 (en) * 2007-10-24 2010-10-11 이글 고오교 가부시키가이샤 Displacement control valve for variable displacement compressor
KR101099121B1 (en) * 2009-08-19 2011-12-27 주식회사 두원전자 Vacuum bellows assembly manufacturing method
KR101322404B1 (en) * 2012-01-19 2013-10-28 (주)대정고분자산업 Electric control valve for variable displacement compressor

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WO2006090760A1 (en) * 2005-02-24 2006-08-31 Kabushiki Kaisha Toyota Jidoshokki Capacity control valve
JP6064132B2 (en) * 2012-10-09 2017-01-25 株式会社テージーケー Compound valve

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KR101099121B1 (en) * 2009-08-19 2011-12-27 주식회사 두원전자 Vacuum bellows assembly manufacturing method
KR101322404B1 (en) * 2012-01-19 2013-10-28 (주)대정고분자산업 Electric control valve for variable displacement compressor

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