CN217898804U

CN217898804U - Electronic expansion valve

Info

Publication number: CN217898804U
Application number: CN202220882956.9U
Authority: CN
Inventors: 吕友权; 顾志峰
Original assignee: Hilite Automobile Technology Co ltd
Current assignee: Hilite Automobile Technology Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-11-25
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses an electronic expansion valve, include: the valve comprises a valve body, a valve port component, a connecting seat, a valve needle component, an actuator, a screw rod and a nut, wherein the valve port component is arranged in the valve body, a valve port is arranged in the valve port component, the valve needle component is arranged in the valve port component in a sliding mode, and the valve needle component can close the valve port after sliding; the nut is sleeved with a stop spring and a sliding ring, the stop spring is in threaded fit with the sliding ring, the nut is provided with a radial guide groove, one end of the sliding ring is provided with a guide section, and the guide section is inserted into the guide groove; the stop spring and the screw rod rotate synchronously, a first stop section and a second stop section are arranged at two ends of the stop spring respectively, and the first stop section and the second stop section can be matched with the sliding ring to stop the screw rod from rotating. In this application, backstop structure's spare part quantity is less to assembly efficiency has been improved.

Description

Electronic expansion valve

Technical Field

The utility model relates to a valve field especially relates to an electronic expansion valve.

Background

The existing electronic expansion valve is generally controlled by a stepping motor to regulate the flow of a refrigerant, and comprises a driver (the stepping motor), an actuating mechanism (a thread pair), a throttling mechanism (a valve needle valve port) and a stop mechanism. The stator coil of the stepping motor receives a pulse signal provided by the controller to drive the rotor magnetic ring to rotate, and the rotor magnetic ring (integrated with the mandrel screw) rotates to drive the valve needle (integrated with the female thread) to move up and down axially, so that the through-flow sectional area of the valve needle and the valve port is controlled to adjust the refrigerating capacity. And the number of the rotating circles of the rotor is mechanically limited by the stop mechanism, so that the phenomenon that the cold quantity is inaccurately adjusted due to the fact that the zero point of a driving signal is inconsistent with the zero point of a mechanical position is avoided.

The stop mechanism of the mainstream electronic expansion valve in the current market comprises a sliding ring, a guide spring and a deflector rod, on one hand, the number of parts is large, on the other hand, the assembly of the guide spring needs to manually pre-assemble the spring on a nut, and the assembly can be adapted to the production of an automatic production line.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves is: the existing stop mechanism has the problems of more parts and inconvenient installation.

In order to solve the technical problem, the utility model discloses a technical scheme be:

an electronic expansion valve comprising: the valve comprises a valve body, a valve port component, a connecting seat, a valve needle component, an actuator, a screw rod and a nut, wherein the valve port component is arranged in the valve body, a valve port is arranged in the valve port component, the valve needle component is slidably arranged in the valve port component, and the valve port can be closed after the valve needle component slides;

the connecting seat is fixedly arranged on the valve body, the actuator is fixedly arranged on the connecting seat, the actuator can drive the screw rod to rotate, a nut is fixedly arranged in the connecting seat, the screw rod is in threaded fit with the nut, and one end of the screw rod is matched with the valve needle component to drive the valve needle component to move in the radial direction;

the nut is sleeved with a stop spring and a sliding ring, the stop spring is in threaded fit with the sliding ring, the nut is provided with a radial and axial guide groove, one end of the sliding ring is provided with a guide section, and the guide section is inserted into the guide groove;

the stop spring and the screw rod rotate synchronously, a first stop section and a second stop section are arranged at two ends of the stop spring respectively, and the first stop section and the second stop section can be matched with the sliding ring to stop the screw rod from rotating.

Further: the actuator includes: the rotor is arranged in the actuator shell, the connecting piece is fixedly arranged in the rotor, and the connecting piece is connected with the screw key.

Further: the connecting piece is internally provided with a jack, one end of the stop spring is provided with a transmission section, and the transmission section is inserted into the jack.

Further: and a support section is arranged at one end of the stop spring and is positioned between the connecting piece and the screw rod so as to limit the axial position of the stop spring, and simultaneously, the slip ring is ensured not to be separated and moves along the axial direction of the nut all the time.

The utility model has the advantages that:

in the application, the number of parts of the stop structure is small, so that the assembly efficiency is improved;

in the application, the guide groove axially penetrates through the nut, so that the slide ring is more convenient to mount, and the slide ring is suitable for automatic assembly lines, and the assembly process is optimized, so that the product competitiveness of the electronic expansion valve is improved;

in this application, the last support section that has of backstop spring can restrict backstop spring's axial position, and backstop spring can be supported to the on the other hand support section, and other positions of backstop spring can be unsettled to reduce friction.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the stop spring, the slip ring and the nut;

FIG. 3 is a schematic structural view of a stopper spring according to the present invention;

the parts in the drawings are numbered as follows: 1-valve body, 2-valve port component, 3-connecting seat, 4-valve needle component, 5-screw, 6-nut component, 7-stop spring, 8-rotor, 9-connecting piece, 10-actuator shell, 11-guide groove, 12-slip ring, 13-guide section, 14-support section and 15-transmission section.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 1 and 2, an embodiment of the present invention includes: 8230

The method comprises the following steps: the valve comprises a valve body 1, a valve port member 2, a connecting seat 3, a valve needle member 4, an actuator, a screw rod 5 and a nut 6, wherein the valve port member 2 is installed in the valve body 1, a valve port is arranged in the valve port member 2, the valve needle member 4 is installed in the valve port member 2 in a sliding mode, and the valve needle member 4 can close the valve port after sliding;

the connecting seat 3 is fixedly arranged on the valve body 1, the actuator is fixedly arranged on the connecting seat 3, the actuator can drive the screw rod 5 to rotate, the nut 6 is fixedly arranged in the connecting seat 3, the screw rod 5 is in threaded fit with the nut 6, and one end of the screw rod 5 is matched with the valve needle component 4 to drive the valve needle component 4 to move radially;

the nut 6 is sleeved with a stop spring 7 and a sliding ring 12, the stop spring 7 is in threaded fit with the sliding ring 12, a radial guide groove 11 is formed in the nut 6, the guide groove 11 axially penetrates through the nut 6, the sliding ring 12 is more convenient to mount, one end of the sliding ring 12 is provided with a guide section 13, and the guide section 13 is inserted into the guide groove 11, so that the sliding ring 12 can move up and down when the stop spring 7 rotates;

the stop spring 7 and the screw 5 rotate synchronously, a first stop section 16 and a second stop section 17 are respectively arranged at two ends of the stop spring 7, and when the sliding ring 12 moves up and down, the first stop section 16 and the second stop section 17 can both contact with the sliding ring 12 to prevent the screw 5 from rotating.

The actuator includes: rotor 8, connecting piece 9 and executor shell 10, rotor 8 sets up in the executor shell 10, fixed mounting has connecting piece 9 in the rotor 8, connecting piece 9 with the key-type connection of screw rod 5.

A jack is arranged in the connecting piece 9, a transmission section 15 is arranged at one end of the stop spring 7, and the transmission section 15 is inserted into the jack.

One end of the stop spring 7 is provided with a supporting section 14, the supporting section 14 is located between the connecting piece 9 and the screw 6 and can limit the axial position of the stop spring 7, on the other hand, the supporting section 14 can support the stop spring 7, and other parts of the stop spring 7 can be suspended to reduce friction.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. An electronic expansion valve comprising: valve body, valve port component, connecting seat, needle component, executor, screw rod and nut, its characterized in that: the valve port component is arranged in the valve body, a valve port is arranged in the valve port component, the valve needle component is arranged in the valve port component in a sliding mode, and the valve needle component can close the valve port after sliding;

the connecting seat is fixedly arranged on the valve body, the actuator is fixedly arranged on the connecting seat, the actuator can drive the screw rod to rotate, a nut is fixedly arranged in the connecting seat, the screw rod is in threaded fit with the nut, and one end of the screw rod is matched with the valve needle member to drive the valve needle member to move in the radial direction;

the nut is sleeved with a stop spring and a sliding ring, the stop spring is in threaded fit with the sliding ring, an axial guide groove is formed in the nut, the guide groove axially penetrates through the nut, a guide section is arranged at one end of the sliding ring, and the guide section is inserted into the guide groove;

2. An electronic expansion valve according to claim 1, wherein: the actuator includes: the rotor is arranged in the actuator shell, the connecting piece is fixedly arranged in the rotor, and the connecting piece is connected with the screw key.

3. An electronic expansion valve according to claim 2, wherein: the connecting piece is internally provided with a jack, one end of the stop spring is provided with a transmission section, the transmission section is inserted into the jack, one end of the stop spring is provided with a support section, and the support section is positioned between the connecting piece and the screw rod to limit the axial position of the stop spring, ensure that the sliding ring is not separated and move along the axial direction of the nut all the time.