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EP-4741694-A1 - ELECTROMAGNETIC COIL AND ELECTROMAGNETIC VALVE HAVING SAME

EP4741694A1EP 4741694 A1EP4741694 A1EP 4741694A1EP-4741694-A1

Abstract

The present disclosure provides an electromagnetic coil and an electromagnetic valve with the electromagnetic coil. The electromagnetic coil includes: a body, a central portion of the body being provided with a first mounting hole extending therethrough; a limiting member located on a side of the body and arranged corresponding to the first mounting hole, wherein the limiting member is capable of being cooperatively connected to a valve body of an electromagnetic valve to fix the valve body within the first mounting hole; and a covering layer surrounding outer peripheries of the body and the limiting member so as to fix the body and the limiting member. By means of a technical solution provided by a present disclosure, a problem in a prior art that a fixing member is prone to loosening can be solved.

Inventors

  • XIAO, Changjun
  • CAI, BIN

Assignees

  • Zhejiang Dunan Artificial Environment Co., Ltd.

Dates

Publication Date
20260513
Application Date
20240725

Claims (11)

  1. An electromagnetic coil, comprising: a body (10), a central portion of the body (10) being provided with a first mounting hole extending therethrough; a limiting member located on a side of the body (10) and arranged corresponding to the first mounting hole, wherein the limiting member is capable of being cooperatively connected to a valve body (20) of an electromagnetic valve to fix the valve body (20) within the first mounting hole; and a covering layer (30) surrounding outer peripheries of the body (10) and the limiting member, so as to fix the body (10) and the limiting member.
  2. The electromagnetic coil according to claim 1, wherein the limiting member has an abutting end and a free end arranged opposite to each other, the abutting end has an accommodating cavity, the accommodating cavity is in communication with the first mounting hole, the abutting end abuts against the body (10), the free end abuts against an inner wall of the covering layer (30), and the accommodating cavity is capable of accommodating an end portion of the valve body.
  3. The electromagnetic coil according to claim 2, wherein the limiting member comprises a retaining cover (50), the retaining cover (50) has a connecting opening, the retaining cover (50) has a first end and a second end arranged opposite to each other, the connecting opening is provided on an end surface of the first end, the connecting opening forms the accommodating cavity, and the second end of the retaining cover (50) forms the free end.
  4. The electromagnetic coil according to claim 3, wherein the limiting member further comprises a gasket (60), the gasket (60) has a second mounting hole (61), the gasket (60) is sleeved on the valve body (20) through the second mounting hole (61), and the gasket (60) is located between the body (10) and the retaining cover (50).
  5. The electromagnetic coil according to claim 4, wherein a plurality of first connecting posts (53) are provided on the first end and arranged along an outer periphery of the connecting opening at annular intervals; the gasket (60) further comprises a plurality of first connecting holes (62), the first connecting holes (62) are provided on an end surface of the gasket (60) close to the retaining cover (50); the plurality of first connecting holes (62) are provided in one-to-one correspondence with the plurality of first connecting posts (53); a plurality of second connecting posts (63) are further provided on an end surface of the gasket (60) away from the first connecting posts (53) and arranged along a circumferential direction of the gasket (60) at intervals, and the second connecting posts (63) are inserted into the body (10).
  6. The electromagnetic coil according to claim 3, wherein a stop portion (54) is provided on an outer side wall of the retaining cover (50), and an outer diameter of the stop portion (54) gradually increases in a direction from the retaining cover (50) toward the body (10).
  7. The electromagnetic coil according to claim 1, wherein a limiting structure (52) is provided on an outer surface of the limiting member facing the covering layer (30) and is in a limiting fit with the covering layer (30).
  8. The electromagnetic coil according to claim 5, wherein the body (10) comprises an inductance coil (11) and a magnetic conductive frame (12), the inductance coil (11) is located within the magnetic conductive frame (12), an end of the valve body (20) passes through the inductance coil (11) from a side of the magnetic conductive frame (12) and exits from an other side of the magnetic conductive frame (12), a side of the magnetic conductive frame (12) adjacent to the retaining cover (50) has a plurality of second connecting holes (121), and the plurality of second connecting holes (121) are arranged in one-to-one correspondence with the plurality of second connecting posts (63).
  9. An electromagnetic valve, comprising a valve body and the electromagnetic coil according to any one of claims 1 to 8, wherein the valve body (20) is partially sleeved into the first mounting hole of the electromagnetic coil and is cooperatively connected to the limiting member of the electromagnetic coil.
  10. The electromagnetic valve according to claim 9, wherein the valve body (20) comprises a base (21) and a supporting portion (22), an end of the supporting portion (22) is connected to the base (21), and an other end of the supporting portion (22) extends through the first mounting hole.
  11. The electromagnetic valve according to claim 10, wherein a snap-fit structure is provided between the supporting portion (22) and the limiting member, and the snap-fit structure is used for restricting displacement of the limiting member relative to the supporting portion (22).

Description

This present disclosure claims the priority of Chinese Patent Application No. 202321975262.0, filed with the China National Intellectual Property Administration on July 25, 2023, and titled "Electromagnetic Coil and Electromagnetic Valve with Electromagnetic Coil". Technical Field The present disclosure relates to the technical field of electromagnetic valves, and in particular, to an electromagnetic coil and an electromagnetic valve with electromagnetic coil. Background Currently, in refrigeration equipment applications, electromagnetic valves are commonly used to control fluid flow channels. An electromagnetic valve includes an electromagnetic coil and a valve body, and the electromagnetic coil actuates the valve body to open and close. In a prior art, an electromagnetic coil includes a body, a covering layer, and a fixing member. The covering layer surrounds an exterior of the body, the electromagnetic coil is sleeved on a sleeve of the valve body, and the fixing member is located outside the covering layer and connected to the sleeve to restrict relative movement between the electromagnetic coil and the sleeve. However, the fixing member is prone to loosening during use, which may cause the electromagnetic coil to shift relative to the sleeve during operation, resulting in noise or even control failure of the electromagnetic valve. At the same time, loosening of the fixing member may lead to water ingress at a connection between the fixing member and the covering layer, and causing a short circuit or burnout of the electromagnetic coil. Summary The present disclosure provides an electromagnetic coil and an electromagnetic valve with electromagnetic coil, so as to solve a problem that the fixing member is prone to loosening in the prior art. According to one aspect of the present disclosure, an electromagnetic coil is provided, including: a body, a central portion of the body being provided with a first mounting hole extending therethrough; a limiting member located on a side of the body and arranged corresponding to the first mounting hole, where the limiting member is capable of being cooperatively connected to a valve body of an electromagnetic valve to fix the valve body within the first mounting hole; and a covering layer surrounding outer peripheries of the body and the limiting member, so as to fix the body and the limiting member. By means of a technical solution provided by the present disclosure, the body is sleeved onto the valve body through the first mounting hole, and a position of the body is restricted by the limiting member, so that displacement of the body is prevented; moreover, by providing the covering layer surrounding outer peripheries of the body and the limiting member, relative positions of the limiting member, a base, and the body can be further restricted, thereby preventing loosening of the limiting member during use and ensuring overall structural stability of the electromagnetic coil. Meanwhile, the covering layer can further provide a sealing effect for the electromagnetic coil, so as to prevent water from entering the body and causing burnout of the electromagnetic coil, thereby improving a safety performance of the electromagnetic coil during use. Further, the limiting member has an abutting end and a free end arranged opposite to each other. The abutting end has an accommodating cavity, the accommodating cavity is in communication with the first mounting hole, the abutting end abuts against the body, the free end abuts against an inner wall of the covering layer, and the accommodating cavity is capable of accommodating an end portion of the valve body. Through the above arrangement, the limiting member is capable of restricting movement of the body, such that the body can maintain a relative position with respect to a valve seat, thereby improving structural stability of the electromagnetic coil during operation. Further, the limiting member includes a retaining cover. The retaining cover has a connecting opening. The retaining cover has a first end and a second end arranged opposite to each other. The connecting opening is provided on an end surface of the first end, the connecting opening forms the accommodating cavity, and the second end of the retaining cover forms the free end. Through the above arrangement, the retaining cover is capable of restricting a relative position of the body with respect to the valve body, preventing displacement of the body and ensuring operating performance of the electromagnetic coil. Further, the limiting member further includes a gasket. The gasket has a second mounting hole. The gasket is sleeved on the valve body through the second mounting hole, and the gasket is located between the body and the retaining cover. Through the above arrangement, the gasket is capable of improving a sealing effect between the body and the retaining cover. Further, a plurality of first connecting posts are provided on the first end and arranged along a