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CN-116792978-B - Electronic expansion valve

CN116792978BCN 116792978 BCN116792978 BCN 116792978BCN-116792978-B

Abstract

The application provides an electronic expansion valve, which comprises a rotor component, a screw rod and a stop rod, wherein the rotor component comprises a rotor seat, the screw rod is connected with the rotor seat, the stop rod is positioned below the rotor seat along the axial direction of the electronic expansion valve and comprises a base part and a rod part, the rod part is arranged in an extending mode along the axial direction of the electronic expansion valve, the base part is provided with a through hole, the screw rod penetrates through the hole, the screw rod comprises a first abutting part, the rotor seat comprises a second abutting part, the base part directly or indirectly abuts against the space between the first abutting part and the second abutting part, the rotor component comprises a rotation stopping part, the base part is provided with a clamping part, and when the rotor component acts, the clamping part at least partially contacts with the rotation stopping part and rotates along with the rotation stopping part.

Inventors

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  • Request for anonymity

Assignees

  • 浙江三花智能控制股份有限公司

Dates

Publication Date
20260508
Application Date
20220318

Claims (10)

  1. 1. The electronic expansion valve is characterized by comprising a rotor component, a screw rod and a stop rod, wherein the rotor component comprises a rotor seat, the screw rod is connected with the rotor seat, at least part of the stop rod is positioned below the rotor seat along the axial direction of the electronic expansion valve, the stop rod is of a steel wire integrated structure and comprises a body part and a rod part, and the rod part extends from the body part along the axial direction of the electronic expansion valve; The body part comprises a base part, the base part directly or indirectly props against between the rotor seat and the screw rod, the body part further comprises a propping part, the propping part and the rod part are positioned on different sides of the base part, the rotor part is provided with a limiting part, when the rotor part acts, the propping part contacts with the limiting part, and the stop rod rotates along with the rotor part.
  2. 2. The electronic expansion valve of claim 1, wherein the abutment portion includes a hook portion, the limiting portion includes a first flange portion, the rotor member includes a rotor body, the rotor body includes a rotor connection portion and a peripheral portion, the rotor connection portion is connected to the rotor seat, the peripheral portion extends in an axial direction of the electronic expansion valve, the first flange portion protrudes downward from the rotor connection seat along the electronic expansion valve axis, and the hook portion is capable of elastically deforming to clamp the first flange portion.
  3. 3. The electronic expansion valve of claim 1, wherein said abutment portion comprises a bridging portion comprising a horizontal portion and an extension portion extending axially downwardly from said horizontal portion along said electronic expansion valve, said stop portion comprising a second flange portion, said rotor member comprising a rotor body including a rotor connection portion and a peripheral portion, said rotor connection portion being connected to said rotor seat, said peripheral portion extending axially of said electronic expansion valve, said second flange portion projecting generally radially inwardly from said peripheral portion, said extension portion being contactable with said second flange portion.
  4. 4. The electronic expansion valve of claim 1, wherein said abutment includes a tab portion including a horizontal portion and an extension portion extending axially downwardly from said horizontal portion of said electronic expansion valve, said retainer portion including a retaining pin, said rotor member including a rotor body including a rotor connecting portion and a peripheral portion, said rotor connecting portion being connected to said rotor seat, said retaining pin being press-fit with a channel portion of said peripheral portion, said extension portion being contactable with said retaining pin.
  5. 5. The electronic expansion valve according to any one of claims 1 to 4, wherein the base portion is a first bending portion, the stopper rod includes a second bending portion, a bending direction of the first bending portion is opposite to a bending direction of the second bending portion, the stopper rod further includes a first connecting portion and a second connecting portion, one side of the first connecting portion is connected to the second bending portion, the other side of the first connecting portion is connected to the rod portion, one side of the second connecting portion is connected to the abutting portion, and the other side of the second connecting portion is connected to the second bending portion.
  6. 6. The electronic expansion valve of claim 5, wherein the first bending portion is a holding portion having a substantially semicircular structure, the shape of the holding portion is adapted to the shape of the outer edge of the connecting portion of the wire rod, and the inner edge wall of the holding portion is at least partially in contact with the outer edge of the connecting portion.
  7. 7. The electronic expansion valve of claim 5, wherein the first bending portion is a substantially rectangular portion having an opening, a shape of an outer edge of the connecting portion of the wire rod is adapted to a shape of the rectangular portion, and an inner edge wall of the rectangular portion is at least partially in contact with the outer edge of the connecting portion.
  8. 8. The electronic expansion valve of claim 5, wherein the lead screw includes a lead screw abutment portion including a lead screw step, the first fold portion directly abutting between the lead screw step and the rotor seat.
  9. 9. The electronic expansion valve of claim 5, wherein the lead screw includes a lead screw abutment portion including a spacer fixedly or limitedly connected to the lead screw, the first fold portion abutting between the spacer and the rotor seat.
  10. 10. The electronic expansion valve according to any one of claims 1 to 4, further comprising a nut member, a valve body, a spring rail, and a slider, wherein the nut member is fixedly connected to the valve body, the spring rail is sleeved on an outer peripheral portion of the nut member, the slider is rotatable around the spring rail in an axial direction of the nut member, and the lever portion is capable of pulling the slider to rotate downward to perform a stop limit against a stop portion of the nut member.

Description

Electronic expansion valve Technical Field The application relates to the technical field of refrigeration control, in particular to an electronic expansion valve. Background The electronic expansion valve is used as an important component and is usually applied to a refrigerating system for adjusting the flow of a refrigerant, the electronic expansion valve comprises a rotor component and a stop rod, the rotor component comprises a rotor and a rotor seat, the rotor seat is provided with a through hole, the horizontal part of the stop rod is fixedly connected with the upper end part of the rotor seat, the shaft-shaped part of the stop rod penetrates through the through hole to extend downwards, the stop rod synchronously rotates along with the rotor component and drives a sliding part of the electronic expansion valve to rotate along a guide rail so as to form a stop relation, and the electronic expansion valve is designed optimally for the structure of the electronic expansion valve by a person skilled in the art, so that the structure of the stop rod is relatively simple, and the connection is a technical problem to be solved urgently. Disclosure of Invention The invention aims to provide an electronic expansion valve, which enables the structure of a stop valve to be relatively simple and convenient to connect. The invention provides an electronic expansion valve, which comprises a rotor component, a screw rod and a stop rod, wherein the rotor component comprises a rotor seat, the screw rod is fixedly connected with the rotor seat, at least part of the stop rod is positioned below the rotor seat along the axial direction of the electronic expansion valve, the stop rod is of a steel wire integrated structure and comprises a body part and a rod part, and the rod part extends from the body part along the axial direction of the electronic expansion valve; The body part comprises a base part, the base part directly or indirectly props against between the rotor seat and the screw rod, the body part further comprises a propping part, the propping part and the rod part are positioned on different sides of the base part, the rotor part is provided with a limiting part, when the rotor part acts, the propping part contacts with the limiting part, and the stop rod rotates along with the rotor part. According to the application, through the optimized design of the electronic expansion valve structure, the stop rod is positioned below the rotor seat, the stop rod comprises the body part and the rod part, the body part comprises the base part, the base part directly or indirectly props against the space between the rotor seat and the stop rod, the body part comprises the propping part, the rotor part comprises the limiting part, when the rotor part acts, the propping part contacts with the limiting part, the stop rod rotates along with the rotor part, and the whole structure of the stop rod is relatively simple and convenient to connect. Drawings Fig. 1 is a schematic cross-sectional view of the whole structure of an electronic expansion valve according to a first embodiment of the present application; FIG. 2 is a schematic perspective view of a portion of the lead screw nut component mating structure of FIG. 1; FIG. 3 is a schematic perspective view of the stop lever of FIG. 1; FIG. 4 is a schematic perspective view of the rotor component of FIG. 1; fig. 5 is a schematic perspective view of a stop rod of an electronic expansion valve according to a second embodiment of the present application; fig. 6 is a schematic perspective view of a rotor component of an electronic expansion valve according to a second embodiment of the present application; fig. 7 is a schematic perspective view of a rotor component of an electronic expansion valve according to a third embodiment of the present application; Part of reference numerals A valve body 10, a valve port 11, and a housing 20; Rotor member 30, rotor 31, rotor seat 32, stopper 311, nut member 40, female screw portion 41, stopper 42, lead screw 50, male screw portion 51, lead screw abutment 52, stopper rod 60, body 61, rod 62, first bent portion 611, abutment 612, second bent portion 613, first connection 614, second connection 615, spring rail 70, slider 80, core member 90; Detailed Description In order to enable those skilled in the art to better understand the technical solutions provided by the present application, the technical solutions of the present application are further described in detail below with reference to the accompanying drawings and specific embodiments. First embodiment The application provides an electronic expansion valve, which comprises a rotor component 30, a screw rod 50 and a stop rod 60, wherein the rotor component comprises a rotor seat 32, the screw rod 50 is fixedly connected with the rotor seat 32, at least part of the stop rod 60 is positioned below the rotor seat 32 along the axial direction of the electronic expansion valve, the stop rod