CN-224229385-U - Electromagnetic water inlet valve for improving low water pressure starting performance

Abstract

The utility model provides an improve electromagnetic water intaking valve of low water pressure starting performance, includes valve body, coil assembly, the water jacket that is located coil assembly center, the movable iron core of water jacket inner chamber, the sealing diaphragm and the support frame of rigid support sealing diaphragm between water jacket and the valve body, the lower extreme diameter expansion of movable iron core forms the bellying, and the bellying is fixed with the elasticity plug, and the periphery of bellying is equipped with the fender cover with support frame fixed connection, the fender cover is hollow tubular structure, keeps off the upper end centre and offers the through-hole and supply movable iron core axial displacement, and the radial clearance of through-hole and movable iron core is not more than 0.6mm, control movable iron core and reciprocate and be difficult for the slope to avoid the slope to cause the sealing unreliable and drip when elasticity plug shutoff pilot hole, when the water pressure is less than 0.02Mpa, coil circular telegram attracts movable iron core to move up and keep away from behind the conduction pilot hole, and the movable iron core bellying keeps off the fender cover and drives support frame and sealing diaphragm upward movement, opens main valve normal play water, domestic appliance can normal use.

Inventors

• Ao lin

Assignees

• 汉宇集团股份有限公司

Dates

Publication Date

20260512

Application Date

20250512

Claims (4)

1. 1. The utility model provides an improve electromagnetic water intaking valve of low water pressure starting performance, including valve body (1), coil assembly (7), be located water proof sleeve (4) at coil assembly (7) center, movable iron core (5) of water proof sleeve (4) inner chamber, sealing membrane (2) and support frame (3) of rigid support sealing membrane (2) between water proof sleeve (4) and valve body (1), its characterized in that, the lower extreme diameter expansion of movable iron core (5) forms bellying (501), bellying (501) are fixed with elastic rubber plug (6), and the periphery of bellying (501) is equipped with keeps off cover (8) with support frame (3) fixed connection, keep off cover (8) are hollow tubular structure, offer through-hole (803) in the middle of the upper end of keep off cover (8) and supply movable iron core (5) axial displacement, and radial clearance between through-hole (803) and movable iron core (5) is not more than 0.6mm.
2. 2. The electromagnetic water inlet valve for improving low water pressure starting performance according to claim 1, wherein an annular surrounding edge (303) is arranged on the upper side of the supporting frame (3), an annular groove (304) is formed in the inner side of the surrounding edge, an annular protrusion (801) is arranged on the periphery of the baffle cover (8), and the annular protrusion (801) and the annular groove (304) are mutually clamped and fixed.
3. 3. The electromagnetic water inlet valve for improving low water pressure starting performance according to claim 2, wherein the outer wall of the baffle cover (8) is provided with a second through hole (802) penetrating through the outer wall of the baffle cover, and the through flow cross section area of the second through hole (802) is larger than that of the pilot hole (302).
4. 4. The electromagnetic water inlet valve for improving low water pressure starting performance according to claim 2, wherein a second groove (305) is formed in the inner side of the supporting frame (3), the second groove (305) is communicated with the lower end opening of the baffle cover (8), and the through flow cross section area of the second groove (305) is larger than that of the pilot hole (302) and is used for guiding water flow to enter the baffle cover (8) along the axial direction so as to avoid radial impact on the movable iron core (5).

Description

Electromagnetic water inlet valve for improving low water pressure starting performance Technical Field The utility model relates to an electromagnetic water inlet valve, in particular to an electromagnetic water inlet valve for improving low water pressure starting performance, and IPC classification can belong to F16K25/00 and F16K29/00. Background When the pilot electromagnetic water inlet valve of the household appliance is opened, the valve membrane is jacked up to open the main valve by depending on the pressure difference between the water supply chamber and the back pressure chamber, when the tap water pressure is lower than 0.02MPa, the water pressure difference is insufficient to overcome the resistance between the valve membrane and the main valve seat, the main valve is not jacked up or the opening degree is very small, so that the flow is very low, and the household appliance cannot be normally used. For terms and knowledge, unless indicated by the specification, see "low-voltage electric appliance design handbook (1 st edition 1992 of mechanical industry press)", "valve handbook-selection" (1 st edition 1992 of chemical industry press) "," IEC electric standard term dictionary "(1 st edition 1992 of China standard press)", "electric appliance manufacturing technology" (1 st edition 1982 of mechanical industry press) "," mechanical engineering handbook ". And" motor engineering handbook "(1 st edition 1998 of mechanical industry press and 2 nd edition 1997)", GB 14536.9 "special requirements for electric water valves for household and similar use electric automatic controllers (including mechanical requirements)", GB/T21465-2008 "valve term", QB/T1291 "electromagnetic valve for automatic washing machine", CN213088786U "electromagnetic valve for improving sealing property", CN202834236U electromagnetic water inlet valve ". Disclosure of utility model In order to solve the technical problem that the main valve of the pilot electromagnetic water inlet valve cannot be opened by low water pressure in the background art, the utility model provides the electromagnetic water inlet valve which can be normally opened even under low water pressure. The technical scheme of the utility model is as follows: The utility model provides an improve low water pressure starting performance's electromagnetism water intaking valve, includes valve body, coil assembly, the water proof cover that is located coil assembly center, the movable iron core of water proof cover inner chamber, the sealed diaphragm and the support frame of rigid support sealed diaphragm between water proof cover and the valve body, and the lower extreme diameter expansion of movable iron core forms the bellying, and the bellying is fixed with the elasticity plug, and the periphery of bellying be equipped with support frame fixed connection's fender cover, keep off the cover and be hollow tubular structure, keep off the upper end centre and offer the through-hole and supply movable iron core axial displacement, and the radial clearance of through-hole and movable iron core is not more than 0.6mm. When the water pressure is lower than 0.02Mpa, coil circular telegram attracts the movable iron core to move up and keep away from switching on earlier guide hole after, continues to move up, and movable iron core bellying jack-up keeps off the cover and drives support frame and sealing diaphragm upward movement, opens the main valve, and normal play water, domestic appliance can normal use, offers the through-hole in the middle of the fender cover upper end and supplies movable iron core axial displacement's guide gap not more than 0.6mm, and control movable iron core reciprocates and be difficult for the slope to avoid the slope to cause sealing unreliable and drip when the first guide hole of elasticity plug shutoff. The typical design of the technical scheme is that the upper side of the supporting frame is provided with an annular surrounding edge, the inner side of the surrounding edge is provided with an annular groove, the periphery of the baffle cover is provided with an annular protrusion, the annular protrusion and the annular groove are clamped mutually so as to fixedly connect the protecting cover and the supporting frame, the outer wall of the baffle cover is provided with a second through hole penetrating through the outer wall of the baffle cover to communicate the inner space of the baffle cover with the back pressure chamber, and the through flow sectional area of the second through hole is larger than that of the pilot hole. The second through hole which penetrates through the outer wall of the baffle cover and has the through flow cross section larger than that of the pilot hole is communicated with the inner space of the baffle cover and the back pressure chamber, so that the pilot flow passage from the back pressure chamber to the water outlet chamber is ensured to be sufficient, the action is reliable, and meanwhile, the situation