CN105716260A

CN105716260A - Electric water heater provided with water flow switch with pressure reduction function and non-metallic injection-molded water tank

Info

Publication number: CN105716260A
Application number: CN201410755578.8A
Authority: CN
Inventors: 刘运柳; 岑自健; 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

Abstract

The invention provides an electric water heater provided with a water flow switch with a pressure reduction function and a non-metallic injection-molded water tank. The water tank 8 is made of non-metallic materials through the injection molding technique, and the water flow switch 4 with the pressure reduction function is installed on a water inlet pipeline of the water tank and is composed of a component A and a component B. According to the component A, a water inlet channel and a water outlet channel in a body 4-1 are separated by a cover plate 4-2; and when water flows in the component A, the water can forcibly push the cover plate 4-2 and make a movable contact 4-9 and a static contact 4-8 be in contact or make a microswitch 4-7 be turned on, and a circuit is closed. According to the component B, a transverse through hole is formed in the small end of a piston 4-12, and a hole is further formed in the middle of the piston 4-12; when water enters the component B, the water passes through the transverse through hole and enters the water tank from the middle hole of the piston 4-12; and when the pressure in the water tank is increased, backpressure is generated at the big end of the piston 4-12, the piston 4-12 is made to move, and the opening degree of a water inlet 4-14 is decreased or even the water inlet 4-14 is closed.

Description

Nonmetal injection moulding water-tank electric water heater equipped with the water flow switch with decompression

Technical field

The present invention relates to the nonmetal injection moulding water-tank electric water heater equipped with the water flow switch with decompression.

Background technology

Current all of domestic, electric water heater in the world, inlet pipeline is connected with water source, from water inlet to water tank, other assemblies are not installed, all can not pressure in self-regulating water tank, water tank is all adopt pressure-bearing type structure, rated pressure is 0.6Mpa, and test pressure is 1.2Mpa；This pressure there will be many insoluble problems；The water tank that such as expands with heat and contract with cold can crackle, leak, pressure conference blast, be world-famous puzzle.

Summary of the invention

The electric heater that existing metal material is made water tank by the present invention improves, it is the nonmetal injection moulding water-tank electric water heater equipped with the water flow switch with decompression after improvement, by shell 1, water inlet pipe 2, outlet pipe 3, constitutes with the water flow switch 4 of decompression, electrothermal tube 6, water tank 8, water nozzle 9, flange 11, relief valve 14；

The described water flow switch 4 with decompression, is made up of bis-functional parts of A, B, for multifunctional module:

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

Part B, piston 4-12 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 4-12 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 4-12, big end produces back pressure, makes piston 4-12 be subjected to displacement, turns down and be even switched off water inlet 4-14；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.

Described water tank adopts nonmetallic materials injection moulding to make, and is tank body and shell be connected as a single entity, and for double-decker, or is separated with shell by tank body, and water tank is injection molded into single layer structure；Water tank is made up of the first product 8-1 and two nonsymmetrical component of the second product 8-2；First product and the second product open at one end, the other end is closed, and on the end face of unlimited one end, has some attachment screw installing holes, between and both ends of the surface binding site, each installs sealing member 8-3, for double sealing structure；And the water flow switch 4 with decompression is installed on water tank water intake pipeline, in water tank, it is equipped with corresponding relief valve.

Beneficial effects of the present invention and novelty be:

1. water inlet tube of electric water heater road, equipped with the water flow switch 4 with decompression, within making the rated pressure in nonmetal injection moulding water tank reduce 0.1-0.2Mpa meanwhile, it is achieved make water tank by nonmetallic materials Shooting Technique, will not leak by crackle, without blast.

2. the water inlet of water tank and outlet pipe all adopt the flexible nonmetallic tubing of length > 500mm, and nonmetal water tank, are collectively forming mechanical water resistance, are perfectly safe.

Accompanying drawing explanation

Fig. 1, Fig. 3 to Fig. 5 are the Water flow switch structure figure with decompression；

Fig. 2 is microswitch schematic diagram；

Fig. 6 to Fig. 8 is equipped with the nonmetal injection moulding water-tank electric water heater schematic diagram of the water flow switch with decompression；

Detailed description of the invention

Embodiment below in conjunction with accompanying drawing 1 to 8 illustrates, in accompanying drawing: shell 1, cold water inlet 2, hot water outlet pipe 3, with the water flow switch 4 of decompression, controller 5, electrothermal tube 6 (upper electrothermal tube 6-1, lower electrothermal tube 6-2), seal and fixing point 7, water tank 8, water nozzle 9, thermometric or temperature limit switch install pipe 10, flange 11, relief valve 14, sewage draining exit 15；

Fig. 1, Fig. 3 to Fig. 5 are the water flow switches 4 with decompression, are made up of bis-functional parts of A, B.

Fig. 6 to Fig. 8 is equipped with the nonmetal injection moulding electric heater structural representation of the water flow switch with decompression；Water tank water intake by with the water flow switch 4 of decompression, no matter pipe-line system pressure size, can quickly make water tank fill water, and make it be limited in set point.

In accompanying drawing, water tank adopts nonmetal injection moulding manufacture, and pressure limit fixes in 0.1 to 0.2Mpa, and this just thoroughly overcomes water tank and makes water tank crackle, the problem leaked because expanding with heat and contract with cold.

In accompanying drawing, electric heater has horizontal type structure, also has vertical structure, generally applicable, be single water tank or many water tanks all general.

In accompanying drawing, water inlet pipe and outlet pipe within water tank are all the flexible nonmetallic tubings adopting length > 500mm, are collectively forming mechanical water resistance with tank body, it is ensured that be perfectly safe.

Described electrothermal tube 6, is in metal tube, fills heating wire, with magnesia powder by heating wire and tube wall isolated insulation, at heating wire two ends equipped with binding post.

If by A and the B of the water flow switch with decompression, it is divided into two assemblies and is contained in water tank, also within this patent is protected.

Claims

1., equipped with the nonmetal injection moulding water-tank electric water heater of the water flow switch with decompression, by shell, water inlet pipe, outlet pipe, constitute with the water flow switch of decompression, electrothermal tube, water tank, Shui Zui, flange, relief valve；It is characterized in that: water tank (8) adopts nonmetallic materials Shooting Technique to make；And on water tank water intake pipeline, it is provided with the water flow switch (4) of decompression.

2. according to claim 1, the described nonmetal injection moulding water-tank electric water heater equipped with the water flow switch with decompression, it is characterised in that: with the water flow switch of decompression, it is made up of bis-functional parts of A, B:

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

Part B, piston (4-12) 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 (4-12) 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 (4-12), big end produces back pressure, makes piston (4-12) be subjected to displacement, turns down and be even switched off water inlet (4-14)；When discharging water, water inlet repeats to open；It is thus possible to the pressure in self-regulating water tank.

3. according to claim 1, the described nonmetal injection moulding water-tank electric water heater equipped with the water flow switch with decompression, it is characterized in that: the water inlet pipe of water tank (8) and outlet pipe are all the flexible nonmetallic tubings adopting length > 500mm, are collectively forming mechanical water resistance with nonmetal tank body.