CN105715840A

CN105715840A - Water flow switch with pressure reduction function

Info

Publication number: CN105715840A
Application number: CN201410755662.XA
Authority: CN
Inventors: 刘伶; 刘成
Original assignee: Guangdong Shunde Guangsheng Electrical Appliance Co Ltd
Current assignee: Guangdong Shunde Guangsheng Electrical Appliance Co Ltd
Priority date: 2014-12-03
Filing date: 2014-12-03
Publication date: 2016-06-29
Anticipated expiration: 2034-12-03
Also published as: CN105715840B

Abstract

The invention provides a water flow switch with a pressure reduction function. The water flow switch is of a water flow pushing structure and is composed of a body, a cover plate, a sealing piece, a pushing piece, a spring or a leaf spring, an installation cover plate, a microswitch, a static contact, a movable contact, a terminal, a pushing pin piston of the microswitch, a connector and a water inlet. A water inlet channel and a water outer channel are separated by the cover plate instead of directly communicating with each other, a circuit is closed when water flows, and the circuit is opened when the water does not flow; and meanwhile, the piston is arranged in the body, the piston can move under the water flow pressure, and the pressure in the water tank can be regulated automatically.

Description

There is the water flow switch of decompression

Technical field

The present invention relates to the water flow switch of decompression, relate generally to the water flow switch having decompression for electric heater (containing central electric water heater) and solar energy, air-source water heater.

Background technology

The inlet pipeline of existing electric heater and solar energy, air-source water heater, directly it is connected with water source, and feed the water into water tank, being called inlet pipeline, this pipeline is not provided with miscellaneous part, therefore the rated pressure in water tank is 0.6mpa, test press-in is 1.2mpa, this water tank there will be crackle, leaks and explodes, more can not with nonmetal making water tank.

Summary of the invention

The present invention provides a kind of water flow switch with decompression, by main body 1, cover plate 2, sealing member 3, impeller 4, spring or spring leaf 5, installation cover plate 6, microswitch 7, stationary contact 8, movable contact 9, terminal 10, the pushing pin 11 of microswitch, piston 12, interface 13, water inlet 14, constitutes.

The described water flow switch with decompression, is made up of bis-functional parts of A, B, for multifunctional module:

Part A, in main body 1, the passage of water inlet and water outlet is not directly communicate, but separated by cover plate 2, when there being water to flow, water can be forced promote cover plate 2, simultaneously promotion sealing member 3 and impeller 4 and make movable contact 9 contact with stationary contact 8 or make microswitch 7 connect, circuit turn-on: when current are closed, water inlet is closed, and circuit also disconnects；

Part B, piston 12 small end has a cross through hole, and centre is also porose, during water inlet, water passes through transverse holes, enters in water tank from piston 12 interstitial hole, during water inlet, do not stop the entrance of water, when the built-in full water of water tank or inflow are more than water yield, when pressure increases in water tank, piston 12, big end produces back pressure, makes piston 12 be subjected to displacement, turns down and be even switched off water inlet 14；When discharging water, water inlet repeats to open；It is thus possible to the pressure in self-regulating water tank, this function guarantees that the pressure in water tank is within 0.15mpa.

Beneficial effects of the present invention and novelty are in that, after adopting multifunctional module in electric heater and solar energy, air-source water heater, the pressure of water tank is very low, and water tank makes material can be thinning, reduce manufacturing cost, simultaneously can with nonmetal making water tank.

Accompanying drawing explanation

Fig. 1, Fig. 3, Fig. 4, Fig. 5 are the Water flow switch structure figure having decompression；

Fig. 2 is microswitch structure schematic diagram；

Detailed description of the invention

In accompanying drawing, there are the main body 1 of the water flow switch of decompression, cover plate 2, sealing member 3, impeller 4, spring or spring leaf 5, cover plate 6, microswitch 7, stationary contact 8, movable contact 9 terminal 10, the pushing pin 11 of microswitch, piston 12, interface 13, water inlet 14, porose rubber parts 15, dividing plate 16 are installed；

Fig. 1, Fig. 3 to Fig. 5 are a kind of water flow switches having decompression provided by the present invention, what Fig. 1 adopted is the microswitch 7 (internal structure is Fig. 2 such as) together with several contact is incorporated into terminal, Fig. 3 to 5 is directly made in contact and terminal installing on cover plate 6, simultaneously in main body 1 built with piston 12；The two function is identical with use, all generally applicable；Fig. 1, Fig. 3 to Fig. 5 water route is closed mode, in Fig. 2 to Fig. 5 circuit be one group normally opened, one group is normally closed, when there being water to flow, normally opened transfers connection to；Some electric heaters, it is not necessary to initial normally-closed circuit, then cancel this circuit；The shape of Fig. 1 cover plate 2 is different from Fig. 3 to Fig. 5, and cover plate 2 has multiple hole, promotes cover plate 2 to move when discharging water, and water flows out from hole, no matter Fig. 1 or Fig. 3 to Fig. 5, and the distance that cover plate 2 moves must assure that and can make circuit ON；On the body 1, inlet channel and water outlet water channel are not straight-through, it is necessary to turn over a bend, and after making cover plate 2 move, water could circulate mutually；When closing due to water channel, the water inlet of main body 1 is closed by cover plate 2 automatically, it is ensured that when municipal systems pipeline is cut off the water, and the water also ensured in Water tank for electrical water heater can not flow out automatically, makes electric heater occur dry combustion method phenomenon never；Stationary contact and movable contact in Fig. 3 to Fig. 5, only illustrate one group in figure, actual in product can make many groups；Fig. 1 to Fig. 5, version is different, and connected mode is different, and operation principle is identical.

In Fig. 5, with having that piston 12 is combined, porose rubber parts 15 and dividing plate 16；Rubber parts 15 has multiple hole, having 1 hole in the middle part of dividing plate 16, side also has multiple hole, intake pressure hour, within the unobstructed entrance water tank of water, when pipe-line system pressure is big, the hole that rubber parts 15 can be deformed in the middle part of by dividing plate 16 blocks, periphery aperture intake, when in water tank, pressure increases, piston 12 produces back pressure, is blocked by the aperture of dividing plate 16 periphery, and the pressure in water tank is reduced by 0.15mpa；If simplifying structure, only retaining piston 12 and one piece of dividing plate is just passable.

If A and B being divided into two stand-alone assemblies, it is simultaneously received in a water tank, also within this patent is protected.

Claims

1. there is the water flow switch of decompression, by main body (1), cover plate (2), sealing member (3), impeller (4), spring or spring leaf (5), cover plate (6) is installed, microswitch (7), stationary contact (8), movable contact (9), terminal (10), pushing pin (11) piston (12) of microswitch, interface (13), water inlet (14) are constituted, it is characterised in that: water flow switch is made up of bis-functional parts of A, B:

Part A, the water inlet of main body (1) and the passage of water outlet directly do not communicate, but separated by cover plate (2), when having water to flow, the pressure of current can be relied on, push directly on cover plate (2), promote sealing member (3) to make movable contact (9) contact with stationary contact (8) with the pushing pin (11) of impeller (4) or microswitch simultaneously, circuit turn-on, when water channel is closed, the feed water inlet of main body (1) is closed by cover plate (2) automatically；

Part B, piston (12) small end has a transverse holes, and during the also porose water inlet of centre, water passes through transverse holes, enter in water tank from piston (12) interstitial hole, when water tank fills water or inflow more than water yield, when in water tank, pressure increases, piston (12) end greatly produces back pressure, under back pressure effect, produce displacement, turn down and be even switched off water inlet (14), thus the pressure in self-regulating water tank.