CN105716263A

CN105716263A - Metal water tank electric water heater provided with water flow switch with pressure reduction function

Info

Publication number: CN105716263A
Application number: CN201410756265.4A
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 a metal water tank electric water heater provided with a water flow switch with a pressure reduction function. A water tank 8 is made of metal materials. The water flow switch 4 with the pressure reduction function is installed on a water inlet pipeline of the water tank. The water flow switch is composed of a functional component A and a functional component B, and both the functional component A and the functional component B are multifunctional components. According to the functional component A, a water inlet channel and a water outlet channel are separated by a cover plate 4-2 instead of communicating with each other directly in a main body 4-1; when water flows, the cover plate 4-2 is forcibly pushed by water, and a sealing piece 4-3 and a pushing piece 4-4 are pushed at the same time, so that a movable contact 4-9 and a stationary contact 4-8 are made to make contact or a microswitch 4-7 is made to be turned on, and thus a circuit is closed; and when the water supply is cut off, a water inlet is closed, and the circuit is opened. According to the functional component B, a transverse through hole is formed in the small end of a piston 4-12, a hole is further formed in the middle of the piston 4-12, when water inflows, water passes through the transverse through hole and then enters the water tank through the middle hole of the piston 4-12, water is prevented from being blocked in the water inflow process, when the water tank is filled with water or the water inlet amount is larger than the water outlet amount and accordingly the pressure in the water tank is increased, back pressure is generated by the big end of the piston 4-12, displacement of the piston 4-12 occurs, and the area of the water inlet 4-14 is decreased or even the water inlet 4-14 is closed; and when water is drained, the water inlet is opened repeatedly. In this way, the pressure in the water tank can be adjusted automatically, and the effect that the pressure in the water tank does not exceed 0.15 mpa can be guaranteed through the pressure reduction function.

Description

Metal water tank electric heater equipped with the water flow switch with decompression

Technical field

The present invention relates to the metal water tank electric 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 metal water tank electric 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 8 adopts metal material to make, and including enamel cistern or stainless steel water tank, and installs the water flow switch 4 with decompression on water tank water intake pipeline, is equipped with corresponding relief valve simultaneously in water tank.

Beneficial effects of the present invention and novelty be:

1. water inlet tube of electric water heater road, is provided with the water flow switch 4 of decompression, within making the pressure in existing metal water tank be reduced 0.1-0.2Mpa by 0.6Mpa, can reduce water tank thickness, save material, will not leak by crackle meanwhile；Without blast；

2. water inlet pipe within water tank and outlet pipe all adopt the flexible nonmetallic tubing of length > 500mm, are collectively forming mechanical water resistance with tank body, 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 Figure 10 is equipped with the electric heater schematic diagram of the water flow switch with decompression；

Detailed description of the invention

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

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:

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；(in accompanying drawing, spring or spring leaf are 4-5, binding post is 4-10)

Fig. 6 to Figure 10 is equipped with the electric heater structural representation of the water flow switch 4 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 metal to be base material liner enamel or use rustless steel manufacture, such as Fig. 6 to Figure 10, if metal water tank (containing enamel and stainless steel water tank), pressure limit fixes in 0.2Mpa, and this just thoroughly overcomes water tank makes water tank enamel split because expanding with heat and contract with cold, the problem of bead crack.

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, form physics water resistance, it is ensured that safety.

Described electrothermal tube 6, is built with heating wire at metal tube, uses oxygen magnesium powder, by heating wire and tube wall isolation, insulation, has binding post at heating wire two ends.

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

Claims

1., equipped with the metal water tank electric 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 metal material to make；Including enamel cistern or stainless steel water tank, 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 metal water tank electric heater equipped with the water flow switch with decompression, it is characterised in that: with the water flow switch (4) 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: during current closedown, 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 metal water tank electric 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, form physics water resistance.