CN210661414U

CN210661414U - Novel electronic expansion valve

Info

Publication number: CN210661414U
Application number: CN201921790297.0U
Authority: CN
Inventors: 不公告发明人
Original assignee: JIANGXI AUDY BRASSWORK Inc
Current assignee: JIANGXI AUDY BRASSWORK Inc
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-06-02
Anticipated expiration: 2029-10-24

Abstract

The utility model discloses a novel electronic expansion valve, including shell, disk seat, outlet pipe, import pipe, needle, valve rod, rotor core, magnetic ring, compression spring, connection piece and case, characterized by: the valve needle comprises a valve needle rod part and a valve needle head part which are respectively processed, and the valve needle rod part and the valve needle head part are mutually matched and fixed; set the needle to needle pole portion and needle head two segmentation, needle pole portion and needle head carry out fixed connection through installation arch and mounting groove, can solve the needle head and can not be greater than the direction section, the restricted problem of valve body bore series that leads to, the extension of each heavy-calibre can be carried out to this structure valve body series, extension company product line.

Description

Novel electronic expansion valve

Technical Field

The utility model relates to a fluid control part technical field, in particular to novel electronic expansion valve.

Background

In the technical field of air-conditioning heat pump systems, an electronic expansion valve is a refrigerant flow control component of heat pump system equipment, and the working principle is as follows: the electronic expansion valve consists of a valve body and a coil, the coil is used as a stator, a rotor part is arranged in the valve body, the magnetic rotor part is driven to rotate along with the power-on or power-off of a coil device used as the stator,

be equipped with the rotor core in the magnetic rotor, the rotor core is equipped with the internal thread, and disk seat upper portion is equipped with the screw rod, and screw rod upper portion is equipped with the external screw thread, and inside the rotor core was located to the needle, through the vice cooperation of screw thread, when making magnetic rotor part rotary motion, it is rectilinear elevating movement to drive the needle to adjust the flow of the refrigerant that flows through the valve port with the aperture between needle and the valve port, thereby realize the purpose of the accurate control of big or small flow.

As shown in fig. 1, in the prior art, the valve needle 5 is divided into a positioning section 51, a guiding section 52 and a flow regulating section 53, the valve needle 5 is an integral structure, and the flow regulation of the electronic expansion valve is obtained by matching the size of the flow regulating section 53 of the valve needle 5 with the size of a valve port; in the actual installation process, as shown in fig. 3, the valve needle 5 passes through the inner guide section hole of the valve rod 6 to be installed, and the outer diameter of the valve needle and the inner diameter of the valve rod form a guide section, so that the size of the flow regulating section of the valve needle cannot be larger than that of the inner diameter of the valve rod, otherwise, the valve needle cannot be assembled. Thus limiting serial expansion of the valve's orifice diameter.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel electronic expansion valve:

the utility model provides a novel electronic expansion valve, includes shell, disk seat, outlet pipe, import pipe, needle, valve rod, rotor core, magnetic ring, compression spring, connection piece and case, characterized by: the valve needle comprises a valve needle rod part and a valve needle head part which are respectively processed, and the valve needle rod part and the valve needle head part are mutually matched and fixed.

Furthermore, the valve needle rod part comprises a positioning section, a guide section and an installation bulge arranged at the bottom, and an installation groove is formed in the valve needle head part.

Preferably, the installation bulge and the installation groove are connected in an interference fit mode.

Preferably, the installation bulge and the installation groove are in transition fit and are fixed in a welding mode.

Preferably, the outer side wall of the mounting protrusion is provided with an external thread, an internal thread is arranged in the mounting groove, and the mounting protrusion is fixedly connected with the mounting groove through the matching of the external thread and the internal thread.

To sum up, the utility model discloses following beneficial effect has:

set the needle to needle pole portion and needle head two segmentation, needle pole portion and needle head carry out fixed connection through installation arch and mounting groove, can solve the needle head and can not be greater than the direction section, the restricted problem of valve body bore series that leads to, the extension of each heavy-calibre can be carried out to this structure valve body series, extension company product line.

Drawings

FIG. 1 is a schematic illustration of a prior art valve needle;

fig. 2 is a schematic structural diagram of the valve needle of the present invention;

FIG. 3 is a schematic illustration of a prior art valve needle mounting process to a valve stem;

figure 4 is a schematic view of the process of the present invention for mounting the valve needle to the valve stem;

fig. 5 is a schematic view of the structure of the valve needle of the present invention installed in the valve rod;

fig. 6 is a schematic view of the overall structure of the present invention;

in the figure, 1, a housing; 2. a valve seat; 3. an outlet pipe; 4. an inlet pipe; 5. a valve needle; 6. a valve stem; 7. a rotor core; 8. a magnetic ring; 9. a compression spring; 10. connecting sheets; 11. a valve core; 51. a positioning section; 52. a guide section; 53. a flow rate regulation section; 54. a valve needle head 55, a mounting projection; 56. and (4) mounting the groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 2, 4, 5 and 6, a novel electronic expansion valve comprises a housing 1, a valve seat 2, an outlet pipe 3, an inlet pipe 4, a valve needle 5, a valve rod 6, a rotor core 7, a magnetic ring 8, a compression spring 9, a connecting piece 10 and a valve core 11, wherein the outlet pipe 3 is installed at the bottom of the valve seat 2, the inlet pipe 4 is installed at the side wall of the valve seat 2, the valve core 11 is installed in the inner cavity of the valve seat 2 and connected with the upper port of the outlet pipe 3, the valve rod 6 is hollow and has a lower section diameter larger than an upper section diameter, the connecting piece 10 is fixedly installed at the transition position of the upper section and the lower section of the valve rod 6, and can be fixedly connected by welding or injection molding, the valve rod 6 is pressed into the valve seat 2 through the connecting piece 10 and is further fixed by welding, so that the lower section of the, the valve needle 5 is arranged in a central hole of the valve rod 6, the valve needle 5 comprises a valve needle rod part and a valve needle head part 54 which are respectively processed, the valve needle rod part and the valve needle head part 54 are mutually matched and fixed, the valve needle rod part consists of a positioning section 51, a guide section 52 and an installation bulge 55 arranged at the bottom, an installation groove 56 is arranged on the valve needle head part 54, the rotor core 7 consists of two halves, the two halves of the rotor core 7 are buckled at the outer side of the upper section of the valve rod 6 and mutually matched through a thread structure, a limiting cavity and a compression cavity are arranged in the middle of the rotor core 7, the limiting cavity corresponds to the limiting block of the valve rod 6 in position, a compression spring 9 is arranged in the compression cavity, the compression spring 9 is propped against the positioning section 51 of the valve needle 5 to provide opening pressure for the valve needle 5, a magnetic ring 8, the outer side wall of the rotor core 7 is provided with a corresponding groove, the rotor core and the groove are positioned and transmit torque through a convex structure, and the shell 1 covers the outer side of the magnetic ring 8 and is fixedly connected with the valve seat 2.

Preferably, the mounting protrusion 55 and the mounting groove 56 are connected by interference fit.

In another embodiment, the mounting protrusion 55 and the mounting groove 56 may be in transition fit and fixed by welding.

In another preferred embodiment, the outer side wall of the mounting protrusion 55 is provided with an external thread, the mounting groove 56 is internally provided with an internal thread, and the mounting protrusion 55 is fixedly connected with the mounting groove 56 through the matching of the external thread and the internal thread.

The utility model discloses an during the assembly of electronic expansion valve, as shown in fig. 4 and fig. 5, it moulds plastics (or the welding) with valve rod 6 earlier to link into an integrated entity with connecting block 10, then install needle rod portion of needle 5 in the mesopore of valve rod 6, then install needle rod portion 54 on needle rod portion from the bottom of valve rod 6, can solve needle flow control section and can not be greater than the guide section with this, the restricted problem of the valve body bore series that leads to, the extension of each heavy-calibre can be carried out to this structure valve body series, extension company's product line.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a novel electronic expansion valve, includes shell (1), disk seat (2), outlet pipe (3), import pipe (4), needle (5), valve rod (6), rotor core (7), magnetic ring (8), compression spring (9), connection piece (10) and case (11), characterized by: the valve needle (5) comprises a valve needle rod part and a valve needle head part (54) which are respectively processed, and the valve needle rod part and the valve needle head part (54) are mutually matched and fixed.

2. The new electronic expansion valve as claimed in claim 1, wherein: the valve needle rod part comprises a positioning section (51), a guide section (52) and a mounting protrusion (55) arranged at the bottom, and a mounting groove (56) is arranged on the valve needle head part (54).

3. A novel electronic expansion valve as claimed in claim 2, wherein: the mounting protrusion (55) and the mounting groove (56) are connected in an interference fit mode.

4. A novel electronic expansion valve as claimed in claim 2, wherein: the mounting protrusion (55) and the mounting groove (56) are in transition fit and are fixed in a welding mode.

5. A novel electronic expansion valve as claimed in claim 2, wherein: the lateral wall of erection arch (55) is equipped with the external screw thread, is equipped with the internal thread in mounting groove (56), through external screw thread and interior screw-thread fit with erection arch (55) and mounting groove (56) fixed connection.