CN211202920U

CN211202920U - Valve seat of electronic expansion valve for vehicle, electronic expansion valve for vehicle and vehicle

Info

Publication number: CN211202920U
Application number: CN201922256668.3U
Authority: CN
Inventors: 林崇卫; 朱晶伟
Original assignee: DONGFENG FUJI THOMSON THERMOSTAT CO LTD; Dongfeng Motor Corp
Current assignee: DONGFENG FUJI THOMSON THERMOSTAT CO LTD; Dongfeng Motor Corp
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-07
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses an automobile-used electronic expansion valve's disk seat, automobile-used electronic expansion valve and car, it includes the disk seat body, this internal inlet channel, exit channel and the intermediate channel who is used for communicateing inlet channel and exit channel of being provided with of disk seat, the intermediate channel is including the bell mouth that is used for filling the sealing washer and the screw hole that is used for connecting the case, the bell mouth with the screw hole is coaxial to be arranged, the minimum aperture of bell mouth is more than or equal to the aperture of screw hole. The utility model discloses can effectively reduce the risk that the sealing washer takes place damage in the assembling process to the sealing washer can be in the same place with the connecting piece dress earlier, and in the disk seat was adorned to the repacking, assembly process had been optimized.

Description

Valve seat of electronic expansion valve for vehicle, electronic expansion valve for vehicle and vehicle

Technical Field

The utility model relates to an electronic expansion valve belongs to electronic expansion valve technical field, concretely relates to automobile-used electronic expansion valve's disk seat, automobile-used electronic expansion valve and car.

Background

In a refrigeration system, an electronic expansion valve is installed between a receiver and an evaporator, and throttles and decompresses high-pressure liquid refrigerant from the receiver to regulate and control the flow of refrigerant into the evaporator. With the improvement of the requirement on the flow control precision, the electronic expansion valve is gradually applied to an automobile air conditioning system, a heat pump system and a battery cooling system. The driving mode of the electronic expansion valve is that the controller calculates parameters acquired by the sensor, sends an adjusting instruction to the drive plate, outputs an electric signal to the electronic expansion valve through the drive plate, drives the rotor part of the electronic expansion valve to rotate through the coil, realizes the up-and-down action of the valve needle, and adjusts the throttling area of the valve port of the electronic expansion valve, thereby realizing the control of the refrigerating output.

The electronic expansion valve has different application structures in the household air conditioner, and in an automobile system, a structure that a valve core part is detachably arranged on a valve seat is mostly adopted in the prior art, the air tightness meeting requirements is ensured through a sealing ring, and the refrigerant is prevented from being leaked outside.

The invention discloses an electronic expansion valve in Chinese invention patent application with application number 2013103196739, which comprises a valve body, a valve seat part detachably mounted on the valve body and a rotor assembly mounted on the valve seat part, wherein the valve body comprises an inlet channel, an outlet channel and a middle channel for communicating the inlet channel and the outlet channel, the valve seat part is mounted and fixed in the middle channel, the valve seat part comprises a valve port part, the valve port part is provided with a valve port communicated with the outlet channel and a through hole communicated with the inlet channel, the rotor assembly comprises a valve needle matched with the valve port, the valve body is provided with a first thread positioned in the middle channel, the valve seat part is provided with a fixing part, and the fixing part is provided with a second thread screwed with the first thread. The valve body is provided with a first step surface exposed to the intermediate passage, and the mounting portion abuts against the first step surface after being screwed into the intermediate passage. The valve body is provided with a second step surface exposed to the middle channel and located below the first step surface, the electronic expansion valve further comprises a first sealing ring sleeved on the fixing part, and the first sealing ring is sealed between the mounting part and the second step surface after being mounted. In this electronic expansion valve, seal structure has adopted the sealed mode of groove, and the seal groove is square structure, need put people's inslot earlier with the sealing washer when the assembly, installs case part again, leads to the sealing washer damaged in the installation like this easily to probably produce the risk of revealing.

Disclosure of Invention

An object of the utility model is to provide an automobile-used electronic expansion valve's disk seat, automobile-used electronic expansion valve and car, it can effectively reduce the risk that the sealing washer takes place the damage in the assembling process to the sealing washer can be in the same place with the connecting piece dress earlier, and in the disk seat was gone into to the repacking, assembly process had been optimized.

For solving the technical problem, the utility model discloses a such automobile-used electronic expansion valve's disk seat, including the disk seat body, this internal import passageway, exit channel and the intermediate channel who is used for communicateing import passageway and exit channel of being provided with of disk seat, the intermediate channel is including the bell mouth that is used for filling the sealing washer and the screw hole that is used for connecting the case, the bell mouth with the screw hole is coaxial to be arranged, the minimum aperture of bell mouth is more than or equal to the aperture of screw hole.

In a preferred embodiment of the present invention, the intermediate channel includes a counter bore for positioning the valve element, the counter bore and the tapered hole are coaxially arranged, and the aperture of the counter bore is larger than the aperture of the tapered hole.

In a preferred embodiment of the present invention, the intermediate channel comprises a light hole for communicating the inlet channel with the outlet channel.

The invention also discloses an electronic expansion valve for a vehicle, which comprises a valve seat, wherein the valve seat is connected with a valve core, a sealing ring is arranged between the valve seat and the valve core, and the valve seat is the valve seat.

In a preferred embodiment of the present invention, the valve core is connected to the valve seat by a thread, and the sealing ring is sleeved on the valve core and located in the tapered hole of the valve seat.

In a preferred embodiment of the present invention, the valve element includes a connecting sleeve for threadedly connecting the valve seat body.

In a preferred embodiment of the present invention, the connecting sleeve includes a positioning portion for cooperating with the counter bore and a threaded portion for cooperating with the threaded hole.

In a preferred embodiment of the present invention, the valve cartridge includes a valve cartridge seat assembly, a nut assembly mounted on the valve cartridge seat assembly, and a rotor assembly mounted on the nut assembly; the rotor component comprises a valve core matched with a valve port of the valve seat to regulate flow, a screw rod with external threads and screwed with the internal threads of the nut component, and a rotor component fixedly connected with the screw rod and capable of generating driving torque with the coil to rotate.

The utility model discloses an in a preferred embodiment, the cover is equipped with reset spring and pretension spring on the case, reset spring installs between casing and rotor part, pretension spring mounting and screw rod and case between.

In a preferred embodiment of the present invention, the valve core sleeve connects and fixes the valve core with the rotor assembly and the screw rod.

The utility model discloses an in a preferred embodiment, the screw rod has the excircle cooperation portion of cutting edge, the rotor connecting plate has the cell type hole, this cell type hole and the cooperation of the excircle cooperation portion of telling.

In a preferred embodiment of the present invention, the rotor connecting plate has an integrally formed projection, and the projection is located in the same direction as the groove edge of the groove-shaped inner hole.

The utility model also discloses an automobile, it has used aforementioned automobile-used electronic expansion valve.

The utility model has the advantages that: the utility model has simple structure and convenient use, the conical hole and the threaded hole are arranged on the valve seat, the risk of damage of the sealing ring in the assembling process is effectively reduced, the gap between the conical hole and the valve core connecting sleeve can be effectively filled by the extrusion of the conical hole on the sealing ring, the sealing performance of the electronic expansion valve is improved, meanwhile, the sealing ring can be firstly assembled with the valve core connecting sleeve and then assembled into the valve seat, and the assembling process is optimized; further, the utility model discloses an increase the counter bore that sets up and be used for fixing a position the case on the disk seat, made things convenient for the installation of case.

Drawings

Fig. 1 is a schematic view of a valve seat of an electronic expansion valve for a vehicle according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a connection between a valve seat and a valve element of an electronic expansion valve for a vehicle according to an embodiment of the present invention;

fig. 3 is a schematic view of a valve element of an electronic expansion valve for a vehicle according to an embodiment of the present invention;

fig. 4 is a schematic view of an electronic expansion valve for a vehicle according to an embodiment of the present invention;

in the figure: 1-a valve seat; 2-a valve core; 3-sealing ring; 4-connecting sleeves; 1.1-inlet channel; 1.2-outlet channels; 1.3-intermediate channel; 1.4-tapered holes; 1.5-threaded hole; 1.6-counter bore; 1.7-unthreaded hole; 1.8-valve seat body; 2.1-a valve cartridge seat assembly; 2.2-nut assembly; 2.3-rotor component; 2.4-a return spring; 2.5-pre-tightening the spring; 4.1-a positioning section; 4.2-threaded part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

By the utility model discloses an instruction attached drawing can know, the utility model discloses an automobile-used electronic expansion valve's disk seat, including disk seat body 1.8, be provided with inlet channel 1.1 in the disk seat body 1.8, exit channel 1.2 and be used for intercommunication inlet channel 1.1 and exit channel 1.2's intermediate channel 1.3, intermediate channel 1.3 is including the bell mouth 1.4 that is used for filling the sealing washer and the screw hole 1.5 that is used for connecting the case, and bell mouth 1.4 and the coaxial arrangement of screw hole 1.5, and the minimum aperture of bell mouth 1.4 is greater than or equal to the aperture of screw hole 1.5. Preferably, the intermediate channel 1.3 comprises a counter bore 1.6 for positioning the valve core, the counter bore 1.6 and the conical hole 1.4 are arranged coaxially, and the diameter of the counter bore 1.6 is larger than that of the conical hole 1.4. Preferably the intermediate channel 1.3 comprises a light aperture 1.7 for communicating the inlet channel 1.1 and the outlet channel 1.2.

Further, the utility model discloses an automobile-used electronic expansion valve, it includes: 1. valve seat: the valve core seat component is arranged and fixed in the middle channel; 2. valve element part (detachably mounted on valve seat by threaded connection): 1) the valve core sealing device comprises a valve core seat (matched with a valve core to regulate flow), a connecting sleeve (connected and sealed with a shell), a valve core seat sealing ring, a valve seat sealing ring, a nut (with internal threads) and a nut connecting plate (the nut is fixed on the connecting plate); 2) rotor assembly (threaded onto nut): the valve core (matched with a valve port to regulate flow), a screw (with external threads), a rotor connecting plate (connected with a rotor and used for limiting the movement of a rotor assembly within a certain axial distance), a rotor (matched with a coil assembly to form radial rotary movement), a gasket, a pre-tightening spring (used for applying downward force to the valve core) and a valve core sleeve (used for fixing the valve core); 3) the shell is arranged outside the rotor assembly (welded and sealed with the connecting sleeve); a return spring mounted to the upper portion of the rotor assembly (to apply a downward force to the screw when the valve is fully open); 3. a coil assembly: and the magnetic valve core is arranged on the periphery of the valve core component (provides a magnetic field for the rotor to form radial rotary motion), and is fixed on the valve seat through a screw.

Specifically, as shown in fig. 4, the valve comprises a valve seat 1, a valve core 2 is connected to the valve seat 1, a sealing ring 3 is arranged between the valve seat 1 and the valve core 2, and the valve seat 1 is the aforementioned valve seat. The valve core 2 is in threaded connection with the valve seat 1, and the sealing ring 3 is sleeved on the valve core 2 and is positioned in a conical hole 1.4 of the valve seat 1. The valve cartridge 2 comprises a connecting sleeve 4 for threaded connection with the valve seat body 1.8. The connecting sleeve 4 comprises a positioning part 4.1 matched with the counter bore 1.6 and a threaded part 4.2 matched with the threaded hole 1.5; the valve core 2 comprises a valve core seat component 2.1, a nut component 2.2 arranged on the valve core seat component 2.1 and a rotor component 2.3 arranged on the nut component 2.2; the rotor component 2.3 comprises a valve core matched with a valve port of the valve seat to regulate flow, a screw rod with external threads and screwed with the internal threads of the nut component 2.2, and a rotor component fixedly connected with the screw rod and generating driving torque with a coil to rotate; the valve core 2 is sleeved with a return spring 2.4 and a pre-tightening spring 2.5, the return spring 2.4 is installed between the shell and the rotor component, and the pre-tightening spring 2.5 is installed between the screw and the valve core. The connecting sleeve 4 and the conical hole 1.4 are matched to form a triangular sealing structure, the sealing mode is convenient for positioning the sealing ring, and meanwhile, the risk of damage to the sealing ring in the assembling process can be effectively reduced. The working principle is as follows: the coil (stator) and the rotor form a step motor, the coil receives an external control signal to generate a magnetic field to enable the rotor to rotate in the radial direction, the screw rod rotates along with the rotor, the screw rod and the nut (fixed on the connecting sleeve) drive the valve core to move up and down in the axial direction through a thread side effect, and finally the valve core and a valve port in the valve core seat form opening and closing actions.

An automobile uses the electronic expansion valve for the automobile.

It should be noted that the components of the valve core 2, the rotor, the housing, etc. of the present invention are the prior art, and the structure thereof can refer to patents such as CN101956830B, CN103388694B, etc.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a valve seat of automobile-used electronic expansion valve, includes valve seat body (1.8), be provided with inlet channel (1.1), exit channel (1.2) in valve seat body (1.8) and be used for communicateing inlet channel (1.1) and exit channel (1.2) intermediate channel (1.3), its characterized in that: the middle channel (1.3) comprises a tapered hole (1.4) used for filling a sealing ring and a threaded hole (1.5) used for connecting a valve core, the tapered hole (1.4) and the threaded hole (1.5) are coaxially arranged, and the minimum aperture of the tapered hole (1.4) is larger than or equal to that of the threaded hole (1.5).

2. The valve seat of an electronic expansion valve for a vehicle according to claim 1, wherein: the middle channel (1.3) comprises a counter bore (1.6) used for positioning the valve core, the counter bore (1.6) and the conical hole (1.4) are coaxially arranged, and the aperture of the counter bore (1.6) is larger than that of the conical hole (1.4).

3. The valve seat of an electronic expansion valve for a vehicle according to claim 1, wherein: the intermediate channel (1.3) comprises a light aperture (1.7) for communicating the inlet channel (1.1) and the outlet channel (1.2).

4. The utility model provides an automobile-used electronic expansion valve, includes disk seat (1), be connected with case (2) on disk seat (1), disk seat (1) with be provided with between case (2) sealing washer (3), its characterized in that: the valve seat (1) is as claimed in any one of claims 1 to 3.

5. The vehicular electronic expansion valve according to claim 4, wherein: the valve core (2) is in threaded connection with the valve seat (1), and the sealing ring (3) is sleeved on the valve core (2) and is positioned in a conical hole (1.4) of the valve seat (1).

6. The vehicular electronic expansion valve according to claim 5, wherein: the valve core (2) comprises a connecting sleeve (4) which is used for being in threaded connection with the valve seat body (1.8).

7. The vehicular electronic expansion valve according to claim 6, wherein: the connecting sleeve (4) comprises a positioning part (4.1) matched with the counter bore (1.6) and a threaded part (4.2) matched with the threaded hole (1.5).

8. The vehicular electronic expansion valve according to claim 4, wherein: the valve core (2) comprises a valve core seat component (2.1), a nut component (2.2) arranged on the valve core seat component (2.1) and a rotor component (2.3) arranged on the nut component (2.2); the rotor component (2.3) comprises a valve core matched with a valve port of the valve seat to regulate flow, a screw rod with external threads and screwed with the internal threads of the nut component (2.2), and a rotor component fixedly connected with the screw rod and generating driving torque with the coil to rotate.

9. The vehicular electronic expansion valve according to claim 8, wherein: the valve core (2) is sleeved with a return spring (2.4) and a pre-tightening spring (2.5), the return spring (2.4) is installed between the shell and the rotor component, and the pre-tightening spring (2.5) is installed between the screw and the valve core.

10. An automobile, characterized in that: an electronic expansion valve for a vehicle according to any of claims 4 to 9 is used.