WO2013139187A1 - Électrovalve bidirectionnelle - Google Patents

Électrovalve bidirectionnelle Download PDF

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Publication number
WO2013139187A1
WO2013139187A1 PCT/CN2013/071062 CN2013071062W WO2013139187A1 WO 2013139187 A1 WO2013139187 A1 WO 2013139187A1 CN 2013071062 W CN2013071062 W CN 2013071062W WO 2013139187 A1 WO2013139187 A1 WO 2013139187A1
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WO
WIPO (PCT)
Prior art keywords
axial
radial
piston
valve
hole
Prior art date
Application number
PCT/CN2013/071062
Other languages
English (en)
Chinese (zh)
Inventor
严卫林
Original Assignee
浙江三花股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN201210077374.4A external-priority patent/CN103322205B/zh
Priority claimed from CN201210077156.0A external-priority patent/CN103322273B/zh
Application filed by 浙江三花股份有限公司 filed Critical 浙江三花股份有限公司
Publication of WO2013139187A1 publication Critical patent/WO2013139187A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
    • F16K31/408—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston the discharge being effected through the piston and being blockable by an electrically-actuated member making contact with the piston

Definitions

  • the invention relates to the technical field of electromagnetic valves, and in particular to a two-way electromagnetic valve. Background technique
  • General solenoid valves due to structural constraints, can only be circulated and cut off in one direction.
  • an air conditioning system particularly a heat pump system
  • the flow direction of the refrigerant during cooling and heating is reversed, so that a general one-way solenoid valve needs to be used in conjunction with a one-way valve.
  • the two-way solenoid valve can be double-conducted and cut-off, so it can be used directly in the system piping without using it with the one-way valve, so it has obvious cost advantages.
  • FIG. 1 is a schematic structural view of a two-way electromagnetic valve in the prior art
  • 1 is a schematic structural view of a first check valve and a second check valve of the two-way solenoid valve of FIG. 1
  • FIG. 3 is a partial structure of a piston, a first check valve and a second check valve of the two-way electromagnetic valve of FIG. schematic diagram.
  • the high-pressure refrigerant opens the first pilot port 2'1 sealed by the first check valve 5 ⁇ , enters the upper chamber 1'2 of the valve seat 1' above the piston 2', and the high-pressure refrigerant fills the entire upper chamber 1'2; at this time, due to the first
  • the second check valve 5'2 seals the second pilot valve port 2'2 under the action of the high pressure refrigerant in the upper chamber 1'2, so that the upper chamber 1'2 is a high pressure end; at this time, due to the upper chamber 1'2
  • the force receiving area of the middle piston 2' is larger than the force receiving area of the piston 2' in the lower chamber 1'3 of the valve seat 1', and since the vertical end of the vertical connecting tube 3 is the low pressure end, the piston 2' under the action of the pressure difference Close the main valve port 1 of the seat 1' and the solenoid valve closes.
  • the high-pressure refrigerant passes through the second pilot port 2'2, and then the check valve core 2'4 is opened, and enters the ⁇ -end of the vertical pipe, because the flow area of the balance hole 2'3 on the piston 2' is smaller than the first The flow area of the second pilot port 2'2, so that the pressure in the upper chamber 1'2 drops, forming a rolling end, at this time the lower chamber 1'3 is a high pressure end, under the action of the pressure difference, the piston 2' moves upward Open the main valve port 1 ⁇ and the solenoid valve opens.
  • the piston 2' is provided with two pilot ports: a first pilot port 2 ⁇ and a second pilot port 2'2, and correspondingly, a support body 5' is provided.
  • second in order to ensure that the two check valves are respectively corresponding to the pilot valve In the mouth fit, it is necessary to prevent the support body 5' from rotating in the circumferential direction; in view of this, as shown in Fig.
  • two positioning rods 5'3 are required to be provided on the support body 5', and correspondingly provided on the piston
  • the positioning rod 5'3 is fitted with two positioning holes to prevent the support 5' from rotating.
  • this kind of structural design not only leads to more parts, but also has difficulty in processing, complicated assembly process and high manufacturing cost;
  • the technical problem to be solved by the present invention is to provide a two-way electromagnetic valve.
  • the structural design of the two-way electromagnetic valve can significantly reduce the number of components, the assembly process, reduce the manufacturing cost, and improve the reliability of the work. .
  • the present invention provides a two-way electromagnetic valve including a valve seat provided with a main valve port and a valve chamber, wherein the valve chamber is provided with a piston that cooperates with the main valve port, and the piston separation chamber
  • the valve chamber is an upper chamber and a lower chamber, and an upper end portion of the piston is provided with a pilot valve port that is opened or closed by a pilot valve member
  • the two-way solenoid valve further includes a cross tube that communicates with the lower chamber, and passes through a vertical pipe communicating with the lower chamber; a circumferential gap between the circumferential side wall of the piston and an inner wall of the corresponding valve cavity
  • the piston is provided with the valve port a first branch that is openable from the upper chamber to the end of the cross tube, and a second branch that can be single-passed from the upper chamber to the end of the vertical tube
  • the piston is further provided a third branch that can be unidirectionally guided to the upper chamber by one end of the vertical pipe; a flow area determined by the
  • the inner wall of the valve seat is provided with a valve seat guiding section, and a circumferential guiding outer wall of the piston is provided with a piston guiding section that cooperates with the valve seat guiding section; an outer diameter is opened below the piston guiding section a small pipe mounting section, the radial pipe is opened on the pipe installation section; the lower part of the valve seat guiding section is further provided with an annular groove, and the piston opens the main valve port
  • the radial conduit is entirely within the range of the annular groove.
  • the two-way solenoid valve further includes an elastic member, and a step is formed between the piston guiding portion and the pipe mounting portion; the elastic member is sleeved on a circumferential outer portion of the lower portion of the piston, and is elastically supported Between the step and the inner bottom wall of the valve seat.
  • the radial pipeline is provided with a radial sealing surface and a radial sealing body matched with the radial sealing surface; the radial pipeline is further provided such that the radial sealing body is along the piston a radially moving guide seat, and the guide seat is provided with a guide seat passage connecting one end of the cross pipe and the radial pipe.
  • the radial duct includes a first radial hole and a second radial hole having a larger aperture, the radial sealing surface being formed in the first radial hole and the second radial hole
  • the guide seat is disposed in the second radial hole and guides to support the radial sealing body to move along the radial direction of the piston to seal or disengage the radial sealing surface.
  • the guide seat is a cylinder having an opening at one end, and the radial sealing body is disposed in a cavity of the cylinder of the cylinder, the cylinder having the opening facing the radial sealing surface, The radial sealing body opens or closes the radial sealing surface; the guiding seat passage is formed on a circumferential side wall of the cylinder and communicates with the cylindrical cavity and the second radial hole The tube gap.
  • the barrel notch further extends to the bottom sealed end of the cylinder such that there is a conduction gap between the bottom sealed end of the cylinder and the inner wall of the second radial bore.
  • the cylinder is interference fit in the second radial bore with its circumferential side wall.
  • the piston further has a pilot valve passage communicating with the pilot valve port in the axial direction, and the pilot valve port is respectively connected to the first branch and the second branch through the pilot valve passage Single-pass.
  • the second branch includes an axial cavity in communication with the pilot passage, the shaft Providing a first axial sealing surface between the cavity and the pilot valve passage, wherein the axial cavity is provided with a first axial sealing body sealing the first axial sealing surface; the axial cavity a first axial stopping member is disposed at an end away from the first axial sealing surface, and the first axial stopping member is provided with a first axial direction connecting the axial cavity and one end of the vertical pipe Through hole.
  • the first axial sealing body is a one-way valve core
  • the one-way valve core is provided with a valve core radial hole and a valve core axial hole communicating with each other, the valve core radial hole and the valve core
  • the axial cavity is in communication
  • the spool axial bore is in communication with the first axial through bore.
  • the third branch includes a second axial hole communicating with one end of the vertical pipe, and the other end of the second axial hole communicates with a third axial hole having a larger diameter; a second axial sealing surface is disposed between the hole and the third axial hole, and a second axial sealing body sealing the second axial sealing surface is disposed in the third axial hole; the third axial hole a second axial stopping member is disposed at one end away from the second axial sealing surface, and the second axial stopping member is provided with a second axial through hole communicating with the third axial hole and the upper cavity .
  • the piston is further provided with an inclined hole, and the second axial hole communicates with one end of the vertical pipe through the inclined hole.
  • the circumferential side wall of the piston of the two-way electromagnetic valve provided by the present invention has a flow gap between the corresponding inner wall of the valve cavity;
  • the piston is provided with the guide a first branch that communicates with the valve port and can be unidirectionally guided from the upper chamber to one end of the cross tube, and a second branch that can be unidirectionally guided from the upper chamber to the end of the vertical tube;
  • the pilot valve member When the coil of the two-way solenoid valve is energized, under the action of the magnetic field, the pilot valve member opens the pilot valve port, and the high-pressure refrigerant in the upper chamber flows into the low-pressure vertical pipe through the pilot valve port and the second branch, due to the pilot port
  • the flow area determined by the second branch is larger than the flow area of the flow gap, so that the pressure in the upper chamber is lowered to form a low pressure end, and the lower chamber is a high pressure end, and the piston is under the pressure difference between the lower chamber and the upper chamber.
  • the refrigerant in the upper chamber no longer flows through the pilot port and the second branch to the end of the vertical pipe, so the pressure in the upper chamber rises.
  • the pressure of the high-pressure refrigerant at one end of the cross-over pipe is equal; at this time, the upper chamber and the lower chamber of the piston are both high-pressure ends, but the force-receiving area of the piston in the upper chamber is larger than the force-receiving area of the piston in the lower chamber, and It is the low pressure end, so under the action of the pressure difference, the piston moves downward, the main valve port is closed, and the solenoid valve is closed.
  • the pilot valve member When the wire is energized, under the action of the magnetic field, the pilot valve member opens the pilot valve port, and the high pressure refrigerant in the upper chamber flows through the pilot valve port and the first branch to the low pressure cross pipe end, due to the pilot port and the first The flow area determined by one road is larger than the flow area of the third branch, so the pressure in the upper chamber is lowered, which is called the low pressure end.
  • the piston Under the action of the pressure difference, the piston moves upward, opening the main valve port, and the solenoid valve turn on.
  • the wire is cut off, the magnetic field disappears, and the pilot valve member is reset to close the pilot port.
  • the high pressure refrigerant in the upper chamber can no longer flow through the pilot port and the first branch to one end of the low pressure cross pipe, so the pressure rises.
  • the two-way solenoid valve of the present invention is provided with only one pilot valve port and pilot valve member, thereby reducing the number of components, the cylinder
  • the structure of the support body is omitted, and the structure of the two positioning rods for preventing the rotation of the support body is also eliminated.
  • the structure of the two positioning holes is omitted on the piston, thereby not only reducing the number of components, but also reducing the processing difficulty and assembly difficulty; since the two-way solenoid valve of the invention has fewer components, the assembly process The difficulty is reduced, and the reliability of the work is correspondingly improved.
  • the two-way electromagnetic valve provided by the invention can significantly reduce the number of components, the assembly process, reduce the manufacturing cost, and improve the reliability of the work.
  • the first branch includes a radial pipeline, and the radial pipeline is provided with a radial sealing surface and a radial sealing body matched with the radial sealing surface;
  • a guide seat for moving the radial sealing body along the radial direction of the piston is further disposed in the road, and the guide seat is provided with a guide seat passage connecting one end of the transverse pipe and the radial pipe.
  • the first branch when the radial sealing body opens the radial sealing surface, through the guiding seat passage, the upper chamber passes through the radial pipeline and the end of the transverse pipe is single-passed, when the radial sealing body closes the diameter When the sealing surface is facing, the first branch is closed.
  • the guide seat since the guide seat radially guides the radial sealing body to move along the radial direction of the piston, it is possible to avoid the downward displacement of the radial sealing body by the action of gravity, thereby avoiding the radial direction.
  • the appearance of the sealing body on the radial sealing surface is not strict, the sealing performance is improved, the leakage is prevented, and the overall energy efficiency of the refrigeration equipment is improved.
  • FIG. 1 is a schematic structural view of a two-way electromagnetic valve in the prior art
  • Figure 2 is a schematic view showing the structure of the first check valve and the second check valve of the two-way solenoid valve of Figure 1;
  • Figure 3 is a view of the piston of the two-way solenoid valve of Figure 1, the first check valve and the second check valve Schematic diagram of local structure;
  • FIG. 4 is a schematic structural view of a two-way electromagnetic valve according to an embodiment of the present invention.
  • Figure 5 is a schematic structural view of the piston of the two-way solenoid valve of Figure 4;
  • Figure 6 is a front plan view of the piston of Figure 5;
  • Figure 7 is a schematic view showing the structure of the cylinder of the piston of Figure 5;
  • FIG. 8 is a schematic structural view of a two-way electromagnetic valve according to another embodiment of the present invention.
  • 5' support 5 ⁇ first check valve; 5'2 second check valve; 5'3 positioning rod.
  • valve seat 11 main valve port; 12 upper chamber; 13 lower chamber; 14 flow gap; 15 valve seat guide section; 16 annular groove;
  • the core of the present invention is to provide a two-way electromagnetic valve, and the structural design of the two-way electromagnetic valve can significantly reduce the number of components, the assembly process, and the manufacturing cost, and the other Aspects can improve the reliability of work.
  • FIG. 4 is a schematic structural view of a two-way electromagnetic valve according to an embodiment of the present invention
  • FIG. 5 is a schematic structural view of a piston of the two-way electromagnetic valve of FIG. The main view of the floor plan.
  • the two-way electromagnetic valve provided by the present invention comprises a valve seat 1, the valve seat 1 is provided with a valve cavity, a main valve port 11 is formed in the valve cavity, and the valve cavity is A piston 2 is provided which closes or opens the main valve port 11; as shown in Fig. 4, the piston 2 separates the valve chamber into an upper chamber 12 above the piston 2 and a lower chamber 13 below the piston 2, and in the upper chamber 12
  • the upper end portion of the piston 2 is provided with a pilot valve port 21 which is opened or closed by a pilot valve member of the two-way solenoid valve; as shown in FIG. 4, the two-way solenoid valve further includes a cross tube 31 and a vertical tube 32.
  • the cross pipe 31 communicates with the lower chamber 13, and the vertical pipe 32 communicates with the main valve port 11 and communicates with the lower chamber 13 when the main valve port 11 is opened.
  • the piston 2 is further provided with a single guide which can be connected from the vertical pipe 32 to the upper cavity 12
  • the third branch ie, the refrigerant can flow through the third branch to the upper chamber 12 through the third branch, but not from the upper chamber 12 to the end of the vertical tube 32; at the same time, the pilot port 21 and the The flow area determined by the second branch is larger than the flow area of the flow gap 14, the pilot port 21 and the A flow passage area greater than the determined area of the third branch flow.
  • the pilot valve member When the coil of the two-way solenoid valve is energized, the pilot valve member opens the pilot valve port 21 under the action of the magnetic field, and the high pressure refrigerant in the upper chamber 12 flows into the low pressure riser tube 32 through the pilot valve port 21 and the second branch.
  • the pressure in the upper chamber 12 is lowered to form a rolling end, and the lower chamber 13 is a high pressure end, and the piston is under The pressure difference between the cavity 13 and the upper chamber 12 is moved upward, the main valve port 11 is opened, and the solenoid valve is opened.
  • the pilot valve member When the coil is energized, under the action of the magnetic field, the pilot valve member opens the pilot valve port 21, and the high pressure refrigerant in the upper chamber 12 flows through the pilot valve port 21 and the first branch to the low pressure cross pipe 31-end, due to the pilot valve
  • the flow area determined by the port 21 and the first branch is larger than the flow area of the third branch, so that the pressure in the upper chamber 12 is lowered to form a low pressure end.
  • the piston 2 moves upward, opening the main Valve port 11, the solenoid valve is open.
  • the pilot valve member When the wire is cut off, the magnetic field disappears, the pilot valve member is reset to close the pilot port 21, and the high pressure refrigerant in the upper chamber 12 can no longer pass through the pilot port.
  • the two-way solenoid valve of the present invention is provided with only one pilot valve port 21 and a pilot valve member, thereby reducing the number of parts and components. Assembly process;
  • the structure of the support body is omitted, and the structure of the two positioning rods for preventing the rotation of the support body is also eliminated, correspondingly
  • the structure of the two positioning holes is also eliminated on the piston, thereby not only reducing the number of components, but also reducing the processing difficulty and assembly difficulty; since the two-way solenoid valve of the invention has fewer components, the assembly process is less difficult. Therefore, the reliability of its work is correspondingly improved.
  • the two-way electromagnetic valve provided by the invention can significantly reduce the number of components, the assembly process, reduce the manufacturing cost, and improve the reliability of the work.
  • the first branch includes a radial duct, and the radial duct is provided with a radial sealing surface 233 and cooperates with the radial sealing surface 233.
  • a radial sealing body 234; a guiding seat for moving the radial sealing body 234 in the radial direction of the piston 2 is further disposed in the radial pipe, and the guiding seat is provided with a connecting transverse pipe 31-end and a radial pipe Guide seat channel.
  • the first branch when the radial sealing body 234 opens the radial sealing surface 233, through the guiding seat passage, the upper chamber 12 is unidirectionally guided through the radial pipe and the transverse pipe 31.
  • the radial sealing surface 233 is closed to the sealing body 234, the first branch is closed.
  • the guide seat since the guide seat radially guides the radial sealing body 234 to move along the radial direction of the piston 2, it is possible to prevent the radial sealing body 234 from being displaced downward by the action of gravity, thereby avoiding The appearance of the radial sealing body 234 sealing the radial sealing surface 233 is not strict, the sealing performance is improved, leakage is prevented, and the overall energy efficiency of the refrigeration equipment is improved.
  • the pilot valve member includes a sleeve 41, a movable iron core 42, a pilot valve seal 43, an elastic member 44, and a static iron core 45.
  • the sleeve 41 is coupled to the valve seat 1, and one end of the movable iron core 42
  • a pilot valve seal 43 is provided which opens or closes the pilot valve port, the other end of which is connected to the static iron core 45 via an elastic member 44, and a sleeve (not shown) is provided on the outside of the sleeve 41.
  • the movable iron core 42 overcomes the elastic force of the elastic member 44 and moves toward the end of the static iron core 45, thereby driving the pilot valve seal 43 to open the pilot valve port 21; At this time, the magnetic field disappears. At this time, under the action of the elastic force of the elastic member 44, the movable iron core 42 is reset, and the pilot valve seal 43 is caused to close the pilot valve port 21.
  • the piston 2 may further be provided with a pilot passage 22 communicating with the pilot port 21 in the axial direction.
  • the pilot valve port 21 communicates with the first branch and the second branch through the pilot valve passage 22, respectively.
  • the radial design of the first branch can also be specifically designed.
  • the radial pipe includes a first radial hole 231 and a second radial hole 232 having a larger diameter.
  • the radial sealing surface 233 is formed in the first radial hole 231 and the second radial direction.
  • a step is formed between the holes 232; the guide seat is disposed in the second radial hole 232 and guides to support the radial sealing body 234 to move in the radial direction of the piston 2 to seal or disengage the radial sealing surface 233.
  • the radial sealing surface 233 can be conveniently designed by the step between the first radial hole 231 and the second radial hole 232 whose diameter is enlarged, and the structure is also relatively simple, and the processing cost is low. .
  • any guide seat structure can guide the radial tube through the guide seat channel as long as the radial sealing body 234 can be radially guided while the radial sealing body 234 opens the radial sealing surface 233.
  • the road should be within the scope of the present invention.
  • a guide seat structure may be specifically designed.
  • the guide seat is a cylinder 235 having an opening at one end, and the radial seal body 234 is disposed on the cylinder.
  • the cylinder 235 faces the radial sealing surface 233 with its opening so that the radial sealing body 234 opens or closes the radial sealing surface 233;
  • the guiding seat passage is opened on the circumferential side of the cylinder 235 a tube on the wall and communicating with the barrel inner cavity 235a and the second radial hole 232 Port 235b.
  • the radial sealing body 234 is inserted into the cylindrical cavity 235a through the opening of the cylinder 235, through which the radial sealing body 234 can be better aligned. Perform radial guidance.
  • the opening of the cylinder 235 faces the radial sealing surface 233, and the radial sealing body 234 moves in the direction of the radial sealing surface 233 in the cylinder cavity 235a, thereby sealing the radial sealing surface 233 away from the The radial sealing surface 233 is moved to open the radial sealing surface 233.
  • the guide seat passage is a cylindrical notch 235b which is opened on the circumferential side wall of the cylinder 235 and communicates the cylindrical cavity 235a and the second radial hole 232, when the radial sealing body 234 is disengaged.
  • the radial sealing surface 233 is radial
  • one end of the transverse pipe 31 communicates with the first radial hole 231 through the second radial hole 232, the cylindrical notch 235b, the cylindrical cavity 235a and the radial sealing surface 233, thereby realizing the radial pipeline. Turning on, and then achieving the conduction of the first branch.
  • the structural design of the cylinder 235 is capable of radially guiding the radial sealing body 234 on the one hand and facilitating the conduction of the radial piping on the other hand.
  • the barrel notch 235b further extends to the bottom sealed end of the cylinder 235 such that the bottom sealing end of the cylinder 235 and the inner wall of the second radial hole 232 have a conduction gap 235c.
  • One end of the traverse tube communicates with the second radial hole 232 through the conduction gap 235c, and further communicates with the barrel notch 235b.
  • the cylinder 235 is interference-fitted into the second radial bore 232 with its circumferential side wall, which is simple in reliability and low in cost.
  • the second branch includes an axial cavity 241 communicating with the pilot passage 22, and a first axial sealing surface 242 is disposed between the axial cavity 241 and the pilot passage 22.
  • a first axial sealing body sealing the first axial sealing surface 242 is disposed in the axial cavity 241;
  • a first axial stopping component is disposed at an end of the axial cavity 241 away from the first axial sealing surface 242 243, and the first axial stopping member 243 is provided with a first axial through hole 243a that communicates with the axial cavity 241 and the end of the vertical pipe 32.
  • the first axial sealing body may be a one-way spool 244, and the one-way spool 244 is provided with a spool radial hole 244a and a spool axial hole 244b communicating with each other, the spool
  • the radial hole 244a is in communication with the axial cavity 241, the spool axial hole 244b and the first axial through hole 243a Connected.
  • the high pressure refrigerant enters the pilot valve passage 22 from the pilot valve port 21, and then seals the first axial sealing surface 242 of the one-way spool 244 into the axial cavity 241, and then the high pressure refrigerant passes through the spool.
  • the radial bore 244a and the spool axial bore 244b are then passed through the first axial through bore 243a of the first axial stop member 243 into the end of the riser tube 32.
  • one end of the axial cavity 241 away from the first axial sealing surface 242 may be connected with a first axial direction having a larger opening diameter.
  • the hole 245 and the piston 2 are provided with a rivet portion 26, and the first axial stopper member 243 is riveted into the first axial hole 245 by the rivet portion 26.
  • the third branch of any structure should be within the protection scope of the present invention as long as it can be single-passed from the vertical pipe 32 to the upper cavity 12. .
  • a third branch structure can be specifically designed.
  • the third branch includes a second axial hole 252 and a third axial hole 253.
  • One end of the second axial hole 252 is connected to the end of the vertical pipe 32, and the other end is The three axial holes 253 are in communication, and the diameter of the third axial hole 253 is larger than the diameter of the second axial hole 252; further, as shown in FIG. 5, between the second axial hole 252 and the third axial hole 253 a second axial sealing surface 254 is disposed, and a second axial sealing body 255 is disposed in the third axial hole 253 for sealing the second axial sealing surface 254.
  • the second axial sealing body 255 can seal the spherical body; Furthermore, as shown in FIG. 5, a second axial stop member 256 is disposed at one end of the third axial hole 253 away from the second axial sealing surface 254, and the second axial stop member 256 is provided with a communication first.
  • the piston 2 may further be provided with an inclined hole 251, and the second axial hole 252 may pass through the inclined hole 251 and the vertical Take the 32-end connection.
  • FIG. 8 is a schematic structural diagram of a two-way electromagnetic valve according to another embodiment of the present invention.
  • the inner wall of the valve seat 1 is provided with a valve seat guiding section 15, and the outer circumferential wall of the piston 2 is provided with a piston guiding section 27 which cooperates with the valve seat guiding section 15; the piston guiding section 27 is opened below the piston guiding section 27.
  • the pipe installation section 28 has a small diameter, the first branch includes a radial pipeline, and the radial pipeline is opened on the pipeline installation section 28; the lower part of the valve seat guiding section 15 is further provided with an annular groove 16, and the piston When the main valve port is opened, the radial line as a whole is in the range in which the annular groove 16 faces.
  • the piston 2 when the piston 2 opens the main valve port 11, the piston 2 moves upward, and accordingly, the radial pipe (including the first radial hole 231 and the second radial hole 232) also moves upward.
  • the line does not pass over the uppermost end of the annular groove 16, i.e., the uppermost end of the annular groove 16 is always higher than the uppermost end of the radial pipe.
  • the piston 2 When the piston 2 opens the main valve port 11, the piston 2 will rotate circumferentially under the push of the refrigerant fluid. At this time, it is possible to turn the radial pipe to the left side in FIG. 8, that is, away from the cross pipe 31. On one side, at this time, the outlet end of the radial pipe may increase the pressure of the refrigerant at the portion due to the narrow space, so that the radial sealing body 234 in the radial pipe will close the radial sealing surface 233 again. Further, the piston 2 vibrates in the axial direction, generating vibration noise, and is also disadvantageous for flow stability.
  • the radial pipe is entirely in the range in which the annular groove 16 is opposed, when the piston 2 is rotated so that the radial pipe is turned to the side away from the transverse pipe 31, The open end of the radial pipe still corresponds to the annular groove 16, and the space of the portion is large enough to facilitate the flow of the refrigerant, thereby avoiding the occurrence of local high pressure, thereby preventing the radial sealing body 234 from closing the radial seal again.
  • the surface 233 can prevent the piston 2 from vibrating and ensure the stability of the flow rate.
  • the two-way solenoid valve further includes an elastic member 5, and a step 29 is formed between the piston guiding portion 27 and the pipe mounting portion 28; the elastic member 5 is sleeved on the lower portion of the piston 2. It is circumferentially outward and is elastically supported between the step 29 and the inner bottom wall of the valve seat.
  • the elastic member 5 can balance the gravity of the piston, and under the action of the pressure difference between the upper chamber and the lower chamber, the piston 2 can be opened relatively easily and is not easily closed, thereby further preventing the piston 2 from vibrating up and down. And guarantee the stability of the flow.
  • pilot valve seal 43 which may be either a sealing ball as shown in Fig. 4 or a sealing plug.
  • the first one-way valve structure causes the first branch to be single-pass; in the second branch, the axial cavity 241, the first axial sealing surface 242, the one-way spool 244, and the first
  • the axial stop member 243 actually constitutes a second one-way valve structure that allows the second branch to be single-passed; in the third branch, the second axial bore 252,
  • the two axial sealing faces 254, the second axial sealing body 255, the third axial bore 253 and the second axial stop member 256 actually constitute a third one-way valve structure, the third one-way valve structure Make the third branch a single guide.
  • first one-way valve structure, the second one-way valve structure and the third one-way valve structure can be interchanged on the premise of satisfying the function of the one-way conduction, that is, the first branch can be adopted
  • the second one-way valve structure or the third one-way valve structure, the second branch may adopt the first one-way valve structure or the third one-way valve structure
  • the third branch may Adopting the first one-way valve structure or the second one-way valve structure; of course, the first branch, the second branch or the third branch is provided on the premise of satisfying the function of the single-pass
  • a one-way valve of other construction which is obviously also within the scope of the present invention.

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  • Magnetically Actuated Valves (AREA)

Abstract

L'invention porte sur une électrovalve bidirectionnelle comprenant un siège de valve (1) muni d'un orifice de valve principal (11) et d'une chambre de valve. Un piston (2) est contenu dans la chambre de valve, et le piston (2) divise la chambre de valve en une chambre supérieure (12) et une chambre inférieure (13). Une partie d'extrémité supérieure du piston (2) est munie d'un orifice de valve pilote (21). Un espace de circulation (14) est disposé entre une paroi latérale circonférentielle du piston (2) et une paroi intérieure correspondante de la chambre de valve. Le piston comporte une première branche qui est en communication unidirectionnelle de la chambre supérieure (12) à une extrémité d'un tube de liaison horizontal (31), et une seconde branche en communication unidirectionnelle de la chambre supérieure (12) à une extrémité d'un tube de liaison vertical (32). Le piston est également muni d'une troisième branche en communication unidirectionnelle d'une extrémité du tube de liaison vertical (32) à la chambre supérieure (12). L'électrovalve bidirectionnelle peut réduire le nombre d'éléments et de pièces, simplifier l'opération d'assemblage et réduire le coût de fabrication.
PCT/CN2013/071062 2012-03-21 2013-01-29 Électrovalve bidirectionnelle WO2013139187A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201210077374.4A CN103322205B (zh) 2012-03-21 2012-03-21 一种双向电磁阀
CN201210077156.0 2012-03-21
CN201210077374.4 2012-03-21
CN201210077156.0A CN103322273B (zh) 2012-03-21 2012-03-21 一种双向电磁阀

Publications (1)

Publication Number Publication Date
WO2013139187A1 true WO2013139187A1 (fr) 2013-09-26

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PCT/CN2013/071062 WO2013139187A1 (fr) 2012-03-21 2013-01-29 Électrovalve bidirectionnelle

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Country Link
WO (1) WO2013139187A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0204666A1 (fr) * 1985-05-31 1986-12-10 EDI SYSTEM Srl Vanne hydraulique de commande réversible à deux sens d'écoulement réversible
US6328275B1 (en) * 2000-02-04 2001-12-11 Husco International, Inc. Bidirectional pilot operated control valve
CN2619098Y (zh) * 2003-05-12 2004-06-02 浙江三花股份有限公司 双向流通的先导式电磁阀
CN102032382A (zh) * 2009-10-08 2011-04-27 浙江三花制冷集团有限公司 双向电磁阀
CN102691820A (zh) * 2011-03-22 2012-09-26 浙江三花股份有限公司 一种双向电磁阀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0204666A1 (fr) * 1985-05-31 1986-12-10 EDI SYSTEM Srl Vanne hydraulique de commande réversible à deux sens d'écoulement réversible
US6328275B1 (en) * 2000-02-04 2001-12-11 Husco International, Inc. Bidirectional pilot operated control valve
CN2619098Y (zh) * 2003-05-12 2004-06-02 浙江三花股份有限公司 双向流通的先导式电磁阀
CN102032382A (zh) * 2009-10-08 2011-04-27 浙江三花制冷集团有限公司 双向电磁阀
CN102691820A (zh) * 2011-03-22 2012-09-26 浙江三花股份有限公司 一种双向电磁阀

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