CN107289172A

CN107289172A - Magnetic valve

Info

Publication number: CN107289172A
Application number: CN201610191101.0A
Authority: CN
Inventors: 金钜; 黄鸿峰; 江超
Original assignee: Zhejiang DunAn Hetian Metal Co Ltd
Current assignee: Zhejiang DunAn Hetian Metal Co Ltd
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2017-10-24
Anticipated expiration: 2036-03-30
Also published as: CN107289172B

Abstract

The invention provides a kind of magnetic valve, including valve body, valve body has valve port and the inlet and outlet connected by valve port, slided at valve port and be provided with the main valve plug with damping port, conduit is fixedly installed on valve body, the top of conduit is fixedly installed attractor, the core iron cap that the internal slide of conduit is provided with core iron and is fixedly connected with core iron, elastic mechanism is provided between attractor and core iron, correspondence damping port, which is slided, in core iron cap is provided with nonreturn valve core, pressure release passage is provided with the side wall of core iron cap, nonreturn valve core, which has, is located at the first position between pressure release passage and valve port and the second place positioned at the remote valve port side of pressure release passage.According to the magnetic valve of the present invention, can solve the reverse air inlet of magnetic valve in the prior art can produce the problem of shake causes noise.

Description

Magnetic valve

Technical field

The present invention relates to hydraulic valve technical field, air-conditioning, freezing and refrigeration etc. are applied to more particularly, to one kind The magnetic valve of refrigeration system.

Background technology

Magnetic valve realizes valve body phase as Automatic Control Component, its magnetic force mainly produced by magnet coil Clutch to valve seat, so as to reach the opening/closing purpose of valve body.

The air inlet pipe and escape pipe of existing magnetic valve are all specific, and when reverse air inlet, valve element is by gas The downward elastic force of upward impulse force and spring, when elastic force and reverse air inlet impulse force close to it is identical when, now hold Resonance is also easy to produce, will produce shake causes noise.

The content of the invention

It is an object of the invention to provide a kind of magnetic valve, it can be produced with solving the reverse air inlet of magnetic valve in the prior art The problem of raw shake causes noise.

In order to solve the above technical problems, as one aspect of the present invention there is provided a kind of magnetic valve, including Valve body, valve body has to slide to be provided with valve port and the inlet and outlet connected by valve port, valve port and had Conduit is fixedly installed on the main valve plug of damping port, valve body, the top of conduit is fixedly installed attractor, led The core iron cap that the internal slide of pipe is provided with core iron and is fixedly connected with core iron, is set between attractor and core iron Correspondence damping port is slided to be provided with nonreturn valve core, the side wall of core iron cap and set in flexible mechanism, core iron cap There is pressure release passage, nonreturn valve core has positioned at the first position between pressure release passage and valve port and positioned at pressure release The second place of the remote valve port side of passage.

The magnetic valve of the present invention, when reverse fluid flow and relatively low pressure, main valve plug will not be opened, fluid Nonreturn valve core top to the second place is now passed through damping port and pressure release by the inverse pressure produced between outlet and import Passage is connected, and it is logical by pressure release after the opening one-way valve element of top against being pressed in that the fluid inversely entered from exit is produced Road carries out pressure release, and the power that gravity and elastic force suffered by main valve plug are produced with inverse pressure is mutually balanced, and main valve plug is protected Hold motionless, nonreturn valve core is remained stationary as, can effectively prevent valve inner part from shaking and causing noise, carry The service behaviour of high magnetic valve.

Brief description of the drawings

Fig. 1 diagrammatically illustrates the sectional structure chart of magnetic valve according to an embodiment of the invention；

Fig. 2 diagrammatically illustrates the amplification assumption diagram at the Q according to Fig. 1 magnetic valve；

Fig. 3 diagrammatically illustrates the core iron structure chart according to Fig. 1 magnetic valve；

Fig. 4 diagrammatically illustrates structure chart of the magnetic valve in reverse air inlet according to an embodiment of the invention.

Reference in figure：1st, valve body；2nd, damping port；3rd, import；4th, export；5th, conduit；6、 Attractor；7th, core iron；8th, core iron cap；9th, nonreturn valve core；10th, pressure release passage；11st, shoulder hole；12、 Mounting groove；13rd, spring；14th, main valve plug；15th, valve port.

Embodiment

Embodiments of the invention are described in detail below, but the present invention can be defined by the claims and The multitude of different ways of covering is implemented.

The direction of arrow represents the flow direction of fluid in figure.

Fig. 1 to 4, embodiments in accordance with the present invention are refer to, magnetic valve includes valve body 1, and valve body 1 has valve Slide to be provided with to have at mouth 15 and the import 3 connected by valve port 15 and outlet 4, valve port 15 and damp Conduit 5 is fixedly installed on the main valve plug 14 of mouth 2, valve body 1, the top of conduit 5 is fixedly installed attraction Son 6, the internal slide of conduit 5 is provided with core iron 7 and the core iron cap 8 being fixedly connected with core iron 7, attractor Correspondence damping port 2 slip in elastic mechanism, core iron cap 8 is provided between 6 and core iron 7 and is provided with check valve Pressure release passage 10 is provided with core 9, the side wall of core iron cap 8, nonreturn valve core 9, which has, is located at pressure release passage 10 First position between valve port 15 and the second place positioned at the side of remote valve port 15 of pressure release passage 10.

In electromagnetic valve work, when being powered to magnet coil, attractor 6 applies magnetic to core iron 7 Attraction, core iron 7 drives core iron cap 8 to be moved to attractor 6, if now fluid proper flow when, stream Body pressure overcomes the gravity of main valve plug 14 so that main valve plug 14 is opened up, between import 3 and outlet 4 Connected by valve port 15, fluid proper flow；If reverse fluid flow, in reverse flow inlet pressure ratio When relatively low, retrograde fluid produce inverse pressure only push up opening one-way valve element 9, the gravity that now main valve plug 14 is subject to The power that inverse pressure is produced mutually is balanced, and main valve plug 14 will not be opened, and nonreturn valve core 9 is located at the under fluid matasomatism Two positions, import 3 is connected by the damping port 2 and pressure release passage 10 on main valve plug 14 and between exporting 4, Retrograde fluid carries out pressure release by pressure release passage, and main valve plug 14 is remained stationary as, and nonreturn valve core 9 is maintained at second All parts in position, valve body 1 are in poised state, will not shake, and non-jitter noise is produced.

With the increase of reverse pressure, when reverse pressure reaches predetermined pressure, reverse pressure overcomes main valve plug 14 Action of Gravity Field so that main valve plug 14 is moved to the place direction of attractor 6, opens valve port 15, now Nonreturn valve core 9 is still within the second place and keeps poised state, and system pressure reaches balance, will not produce Dither noise, therefore by the cooperation of nonreturn valve core 9 and pressure release passage 10, can occur fluid in magnetic valve During reverse circulation, it is prevented effectively from inner body shake and produces noise, improve the service behaviour of magnetic valve.Simultaneously The magnetic valve also has simple in construction, part burning, assembles simple, lower-cost advantage.

Preferably, nonreturn valve core 9, which has, stretches out towards damping port 2 and seals the conehead coordinated with damping port 2. The conehead of nonreturn valve core 9 can play guide effect when being coordinated with damping port 2, while can also have Sealing fiting effect between effect enhancing nonreturn valve core 9 and main valve plug 14, improves the sealing property of magnetic valve.

Shoulder hole 11, step surface and core iron 7 of the nonreturn valve core 9 in shoulder hole 11 are provided with core iron cap 8 Slided in the sliding space limited.Nonreturn valve core 9 passes through the shoulder hole 11 of core iron cap 8 and matching somebody with somebody for core iron 7 Close and carry out axial limiting, on the one hand can conveniently limit the sliding position of nonreturn valve core 9, on the other hand also may be used To reduce the difficulty of processing of core iron cap 8.

Preferably, when nonreturn valve core 9 seals cooperation with damping port 2, have between nonreturn valve core 9 and step surface There is gap A.When magnet coil is not powered, in the elastic reaction and nonreturn valve core 9 of elastic mechanism Action of Gravity Field under, core iron cap 8 is connected on the end face of main valve plug 14, and nonreturn valve core 9 is sealed in main valve plug On 14 damping port 2, when reverse fluid flow, it can be entered at damping port 2 where nonreturn valve core 9 Position, then promotes nonreturn valve core 9 to open damping port 2, due to having between nonreturn valve core 9 and step surface Gap, therefore more retrograde fluid can be facilitated to enter gap location, quick produce opens nonreturn valve core 9 The thrust of damping port 2, can more rapidly control nonreturn valve core 9 to open damping port 2, improve magnetic valve Exploitation performance.

Preferably, the circulation area of pressure release passage 10 is more than the circulation area of damping port 2, can make from damping The fluid that is flowed out at mouthfuls 2 is quick to carry out pressure release at pressure release passage 10, preferably avoid magnetic valve import 3 with Export the pressure at 4 excessive and cause part to shake, more efficiently reduce or avoid electromagnetic valve work mistake Dither noise in journey.In the present embodiment, pressure release passage 10 is to be uniformly arranged along the circumference of core iron cap 8 Multiple circular holes.

Core iron cap 8 and the split of core iron 7 are set, and are fixedly connected.Core iron cap 8 and the split of core iron 7 are set, Core iron cap 8 and core iron 7 can be processed respectively, reduce all parts adds work(difficulty, reduces Processing cost.After core iron cap 8 and core iron 7 are machined, nonreturn valve core 9 can be loaded core iron cap After in 8 shoulder hole 11, both is fixed together by the mode such as be spirally connected, it is easier for installation Fast.Certainly, core iron cap 8 and core iron 7 can also weld together after assembly is completed.

One end of core iron 7 towards attractor 6 is provided with mounting groove 12, and elastic mechanism includes spring 13, spring 13 are arranged in mounting groove 12, and one end of spring 13 is connected on attractor 6, and the other end is connected to core iron On 7.

The side of nonreturn valve core 9 towards core iron 7 is provided with damping device, such as, in check valve 9 and core iron Annular plastics pad is placed between 7, vibration absorber is used as.Damping device can be unidirectional in retrograde fluid impact The impact caused in the motion process of nonreturn valve core 9 to core iron 7 is reduced during valve element 9, the vibrations of magnetic valve are reduced Effect, further improves the damping noise control performance of magnetic valve.

When nonreturn valve core 9 is in open mode, core iron cap 8 is connected on main valve plug 14.In spring 13 Elastic reaction under, core iron cap 8 is pushed against on main valve plug 14, can be by the elastic reaction of spring 13 more Plus effectively ensure that main valve plug 14 is pressed on valve body 1, will not be due to the percussion by retrograde fluid Shake, produce noise, further improve the noise control performance of magnetic valve.

The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for this area For technical staff, the present invention can have various modifications and variations.Within the spirit and principles of the invention, Any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.

Claims

1. a kind of magnetic valve, it is characterised in that including valve body (1), the valve body (1) has valve port (15) And the import (3) and outlet (4) connected by the valve port (15), valve port (15) place Slip is provided with the main valve plug (14) with damping port (2), the valve body (1) and is fixedly installed Conduit (5), the top of the conduit (5) is fixedly installed attractor (6), the conduit (5) Internal slide is provided with core iron (7) and the core iron cap (8) being fixedly connected with the core iron (7), described It is right in elastic mechanism, the core iron cap (8) to be provided between attractor (6) and the core iron (7) Answer the damping port (2) slip to be provided with nonreturn valve core (9), the side wall of the core iron cap (8) to set Pressure release passage (10) is equipped with, the nonreturn valve core (9), which has, is located at the pressure release passage (10) and institute State the first position between valve port (15) and the remote valve port positioned at the pressure release passage (10) (15) second place of side.

2. magnetic valve according to claim 1, it is characterised in that the nonreturn valve core (9) has direction The damping port (2) is stretched out and seals the conehead coordinated with the damping port (2).

3. magnetic valve according to claim 1, it is characterised in that be provided with rank in the core iron cap (8) Terraced hole (11), step surface and the core iron of the nonreturn valve core (9) in the shoulder hole (11) (7) slided in the sliding space limited.

4. magnetic valve according to claim 3, it is characterised in that the nonreturn valve core (9) and the resistance When Ni Kou (2) sealings coordinate, there is gap between the nonreturn valve core (9) and the step surface.

5. magnetic valve according to claim 1, it is characterised in that the circulating face of the pressure release passage (10) Circulation area of the product more than the damping port (2).

6. magnetic valve according to claim 1, it is characterised in that the core iron cap (8) and the core iron (7) split is set, and is fixedly connected.

7. magnetic valve according to claim 1, it is characterised in that the core iron (7) attracts towards described The one end of sub (6) is provided with mounting groove (12), and the elastic mechanism includes spring (13), the bullet Spring (13) is arranged in the mounting groove (12), and one end of the spring (13) is connected to the suction On introduction (6), the other end is connected on the core iron (7).

8. magnetic valve according to claim 1, it is characterised in that the nonreturn valve core (9) is described in The side of core iron (7) is provided with damping device.

9. magnetic valve according to claim 1, it is characterised in that be in and beat in the nonreturn valve core (9) During open state, the core iron cap (8) is connected on the main valve plug (14).