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CN-122014895-A - Electromagnetic valve

CN122014895ACN 122014895 ACN122014895 ACN 122014895ACN-122014895-A

Abstract

The application discloses an electromagnetic valve, which comprises a valve body part, a pilot pipe and a piston part, wherein the valve body part comprises a valve body and a valve cover part, the valve cover part is fixedly connected with the valve body, the pilot pipe is positioned at the outer side of the valve body, one side end part of the pilot pipe is connected with the valve cover part, the other side end part of the pilot pipe is connected with the valve body, the pilot pipe is provided with a pipe cavity, the valve body part comprises a valve guide cavity and a main valve part, the piston part comprises a piston head, the piston head can prop against the main valve part, a back pressure cavity is arranged between the piston head and the valve cover part, and the pipe cavity is communicated with the back pressure cavity and the pilot valve cavity. According to the electromagnetic valve provided by the application, the pilot pipe and the valve body are of a split structure, and the pilot pipe is positioned at the outer side of the valve body, so that the pilot pipe is convenient to process, the volume of the valve body can be reduced, and the valve body is more convenient and faster to process.

Inventors

  • Request for anonymity
  • Request for anonymity

Assignees

  • 浙江三花商用制冷有限公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (13)

  1. 1. The electromagnetic valve is characterized by comprising a valve body part (1), a pilot pipe (2) and a piston part (3), wherein the valve body part (1) comprises a valve body (11) and a valve cover part (12), and the valve cover part (12) is fixedly connected with the valve body (11); The pilot tube (2) is located the outside of valve body (11), one side tip of pilot tube (2) with valve gap part (12) are connected, the opposite side tip of pilot tube (2) with valve body (11) are connected, pilot tube (2) have cavity (21), valve body part (1) includes valve guide chamber (101), main valve oral area (133), piston part (3) include the piston head, the piston head can with main valve oral area (133) offset, the piston head with including back pressure chamber (14) between valve gap part (12), cavity (21) intercommunication back pressure chamber (14) with valve guide chamber (101), valve body part (1) include inflow port (116) and outflow port (117), valve guide chamber (101) can with outflow port (117) intercommunication.
  2. 2. The electromagnetic valve according to claim 1, characterized in that the valve cover member (12) comprises a connection seat (122), the connection seat (122) is fixedly connected with the valve body (11), the connection seat (122) comprises a first hole (1223), one side end of the pilot pipe (2) is located in the first hole (1223), the valve body (11) comprises a second hole (113), and the other side end of the pilot pipe (2) is located in the second hole (113).
  3. 3. The solenoid valve according to claim 2, characterized in that the pilot tube (2) is made of stainless steel tubing, the valve body (11) comprises a main body part (114) and a pilot valve connection part (115), the main body part (114) is welded to the valve cover part (12), the pilot valve connection part (115) is arranged protruding sideways relative to the main body part (114), the pilot valve connection part (115) comprises at least part of the pilot valve cavity (101), and the second hole (113) is located in a wall part of the pilot valve connection part (115).
  4. 4. A solenoid valve according to claim 2, characterised in that the pilot tube (2) is arranged vertically with respect to the pilot valve connection (115).
  5. 5. The electromagnetic valve according to any one of claims 1-4, characterized in that the valve body (11) comprises a first guiding portion (10 a), the piston member (3) comprises a piston (31), the piston (31) is in sliding fit with the first guiding portion (10 a), the piston (31) comprises a body portion (311) and a cylindrical portion (312), the body portion (311) serves as the piston head, the cylindrical portion (312) comprises an overflow or overflow hole (313 a), the overflow or overflow hole (313 a) penetrates through an inner cylinder wall and an outer cylinder wall of the cylindrical portion (312), and the overflow or overflow hole (313 a) is communicated with the pipe cavity (21) through the back pressure cavity (14).
  6. 6. A solenoid valve according to any one of claims 1-4, characterised in that the piston part (3) comprises a piston (31A), the piston (31A) comprising a body part (31A 1) and a cylindrical part (31A 2), the body part (31A 1) acting as the piston head, the valve body (11) comprising a second guide part (10 b 1), the body part (31A 1) being in sliding engagement with the second guide part (10 b 1), the valve cover part (12A) being cup-shaped, the valve cover part (12A) comprising a third guide part (10 b 2), the cylindrical part (31A 2) being in sliding engagement with the third guide part (10 b 2), the cylindrical part (31A 2) comprising an overflow or through-flow hole (313 b) through the inner and outer cylinder walls of the cylindrical part (31A 2), the overflow or through-flow hole (313 b) being in communication with the back pressure chamber (21) via the back pressure chamber (14).
  7. 7. The electromagnetic valve according to claim 6, characterized in that the valve cover member (12A) comprises a cover body (12A 1) and a connecting seat (12A 2), the cover body (12A 1) comprises a cup-shaped portion (12A 12) and an outer protruding portion (12A 13), the inner wall of the cup-shaped portion (12A 12) serves as the third guiding portion (10 b 2), the outer protruding portion (12A 13) protrudes from the cup-shaped portion (12A 11) towards the side far away from the piston (31A), the outer protruding portion (12A 13) is fixedly connected with the connecting seat (12A 2), the connecting seat (12A 2) is fixedly connected with the valve body (11), the connecting seat (12A 2) comprises a first hole (1223), one side end of the pilot tube (2A) is located in the first hole (1223), the tube cavity (21A) is communicated with the back pressure cavity (14), the other side end of the pilot tube (2A) is located in the second hole (113), and the other side end of the pilot tube (2A) is located in the second hole (113).
  8. 8. The electromagnetic valve according to any one of claims 1 to 4, characterized in that the valve cover member (12B) includes a fourth guide portion (10 c), the piston member (3) includes a piston (31B), the piston (31B) is slidably fitted with the fourth guide portion (10 c), the piston (31B) includes a body portion (31B 1) and a cylindrical portion (31B 2), the body portion (31B 1) serves as the piston head, the cylindrical portion (31B 2) includes a flow-through port or flow-through hole (313 c), the flow-through port or flow-through hole (313 c) penetrates through inner and outer cylinder walls of the cylindrical portion (31B 2), and the flow-through port or flow-through hole (313 c) communicates with the lumen (21) through the back pressure chamber (14).
  9. 9. The electromagnetic valve according to claim 8, characterized in that the valve cover member (12B) includes a cover body (12B 1) and a connection seat (12B 2), the connection seat (12B 2) includes a seat body portion (12B 24), a first bending portion (12B 25) and a second bending portion (12B 26), an inner wall of the seat body portion (12B 24) serves as the fourth guide portion (10 c), the first bending portion (12B 25) is bent from the seat body portion (12B 24) toward a side away from the piston (31) in a lateral direction of the electromagnetic valve, the second bending portion (12B 26) is bent from the first bending portion (12B 25) toward a side away from the piston (31B), the second bending portion (12B 26) is fixedly connected with the cover body (12B 1), and the seat body portion (12B 24) is fixedly connected with the valve body (11).
  10. 10. The solenoid valve of any one of claims 1-4 wherein the valve cover member (12) includes a cover body (121) and a connection seat (122), the connection seat (122) includes a first step portion (1221), an outer edge of the cover body (121) includes a first step portion (1211), the first step portion (1211) faces downward in a longitudinal direction of the solenoid valve, the first connection portion (1221) is disposed at the first step portion (1211), the first connection portion (1221) is fixedly connected with the first step portion (1211), the valve body (11) includes a second step portion (112), the second step portion (112) faces toward the cover body (121), and the connection seat (122) further includes a second connection portion (1222), the second connection portion (1222) is disposed at the second step portion (112), and the second connection portion (1222) is fixedly connected with the second step portion (112).
  11. 11. The solenoid valve according to claim 1, characterized in that the valve body part (1) further comprises a valve seat (13), the valve seat (13) being a stamping, the valve seat (13) being fixedly connected with the valve body (11), the valve seat (13) comprising a support portion (132), the support portion (132) comprising the main valve mouth (133), the valve body part (1) comprising a communication channel capable of communicating the pilot valve chamber (101) with the outflow port (117).
  12. 12. The solenoid valve according to claim 11, characterized in that said valve body (11) comprises a pilot valve mouth (111), said pilot valve mouth (111) being capable of communicating with said pilot valve chamber (101), said communication channel comprising at least part of said pilot valve mouth (111), said valve seat (13) further comprising a base portion (131), said base portion (131) protruding from said support portion (132) in a direction away from said piston member (3), said base portion (131) being welded to said outflow port (117), said base portion (131) comprising a side hole (1311), said communication channel further comprising at least part of said side hole (1311), said side hole (1311) communicating said pilot valve mouth (111) with the inner cavity of said valve seat (13).
  13. 13. The electromagnetic valve according to any one of claims 1-12, characterized in that the valve body (11) and the valve cover member (12) are made of stainless steel, the piston member (3) includes a piston (31), a first elastic member (33) is included between the piston (31) and the valve cover member (12), one end of the first elastic member (33) abuts against the piston (31), the other end of the first elastic member (33) abuts against the valve cover member (12), and the piston (21) includes a balance hole (314); The electromagnetic valve further comprises a pilot valve part (4), the pilot valve part (4) is a core iron part, the core iron part comprises a core iron (41) and a steel ball (43), the steel ball (43) is connected with the core iron (41), the valve body (11) comprises a pilot valve opening (111), and in the valve closing state of the electromagnetic valve, the steel ball (33) is abutted against the pilot valve opening (111).

Description

Electromagnetic valve Technical Field The invention relates to the technical field of valves for refrigeration systems, in particular to an electromagnetic valve. Background In a valve for a refrigeration system, fig. 1 is a schematic cross-sectional view of a solenoid valve of the background art, the solenoid valve comprising a valve body part, a pilot valve part 2 'and a piston 3', the valve body part comprising a valve body 1 'made of brass, the valve body 1' having a piston chamber 12 'in sliding engagement with the piston 3', the pilot valve part 2 'being located partly in a pilot chamber 13' of the valve body 1', the valve body 1' having a pilot flow passage 11 'inside, the pilot flow passage 11' communicating the piston chamber 12 'with the pilot chamber 13'. Disclosure of Invention Based on the electromagnetic valve in the background technology, the valve body is large in size and heavy in weight, so that the cost is high, and when the valve body is processed, the inventor finds that the difficulty of directly processing a pilot runner in the valve body is high, and the processing and forming efficiency of the valve body is low. The invention provides an electromagnetic valve, which comprises a valve body part, a pilot pipe and a piston part, wherein the valve body part comprises a valve body and a valve cover part, the valve cover part is fixedly connected with the valve body, the pilot pipe is positioned at the outer side of the valve body, one side end part of the pilot pipe is connected with the valve cover part, the other side end part of the pilot pipe is connected with the valve body, the pilot pipe is provided with a pipe cavity, the valve body part comprises a valve guide cavity and a main valve part, the piston part comprises a piston head, the piston head can prop against the main valve part, a back pressure cavity is arranged between the piston head and the valve cover part, the pipe cavity is communicated with the back pressure cavity and the pilot valve cavity, the valve body part comprises an inflow port and an outflow port, and the valve guide cavity can be communicated with the outflow port. According to the electromagnetic valve provided by the application, the pilot valve is arranged on the outer side of the valve body, and the pilot valve is of a split structure, so that the pilot valve is convenient to process, the volume of the valve body can be reduced, and the valve body is more convenient and faster to process. Drawings FIG. 1 is a schematic cross-sectional view of a solenoid valve of the background art; FIG. 2 is a schematic cross-sectional view of the solenoid valve of the present invention in a closed state; FIG. 3 is a schematic cross-sectional view of the solenoid valve of FIG. 2 in an open state; FIG. 4 is an enlarged schematic view of FIG. 2 at A; FIG. 5 is an enlarged schematic view at B in FIG. 3; FIG. 6 is a schematic perspective view of the piston of FIG. 2; FIG. 7 is a schematic cross-sectional view of another solenoid valve according to the present disclosure in a closed state; FIG. 8 is an enlarged schematic view at C in FIG. 7; FIG. 9 is a schematic cross-sectional view of a solenoid valve according to the present invention in a closed state; fig. 10 is an enlarged schematic view at D in fig. 9. The reference numerals in fig. 2-10 are: 1-valve body part, 10 a-first guide part, 10B 1-second guide part, 10B 2-third guide part, 10 c-fourth guide part, 101-valve guide cavity, 11-valve body, 111-pilot valve opening, 112-second step part, 113-second hole, 114-main body part, 115-pilot valve connecting part, 116-inflow port, 117-outflow port, 12/12A/12B-valve cover part, 121/12A1/12B 1-cover body, 1211-first step part 12A 12-cup, 12A 13-outer flange, 122/12A2/12B 2-connecting seat, 1221-first connecting portion, 1222-second connecting portion, 1223-first bore, 12B 24-seat portion, 12B 25-first bend, 12B 26-second bend, 1227-bend, 13-valve seat, 131-base, 1311-side bore, 132-support, 133-main valve opening, 14-back pressure chamber, 15-inlet nipple, 16-outlet nipple, 2/2A-catheter, 21/21A-lumen, 3-Piston member, 31/31A/31B-piston, 310-cavity, 311/31A1/31B 1-body portion, 312/31A2/31B 2-cylindrical portion 313a/313B/313 c-through-flow opening or through-flow opening, 314-balance hole, 315-annular groove, 32-piston ring, 33-second elastic member, 4-Pilot valve part, 41-core iron, 42-end socket, 43-steel ball, 44-first elastic piece, 45-tubular pipe. Detailed Description The present application will be further described in detail below with reference to the drawings and detailed description for the purpose of better understanding of the technical solution of the present application to those skilled in the art. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. The terms upper, lower,