CN201885782U

CN201885782U - Outside-the-box double-electrode-induction water level sensor special for solar energy water heater

Info

Publication number: CN201885782U
Application number: CN2010205824221U
Authority: CN
Inventors: 陈秋枫
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-21
Filing date: 2010-10-21
Publication date: 2011-06-29
Anticipated expiration: 2020-10-21

Abstract

The utility model relates to an outside-the-box double-electrode-induction water level sensor special for solar energy water heater, which has a structure as shown in the figure: a trunk pipe 1 consists of a plurality of sections of conductive metal bodies 2 and insulated plastic pipe bodies 3, wherein the conductive metal bodies are embedded in the insulated plastic pipe bodies; conductive wires 4 are wound on the outer side wall of each section of conductive metal body; a magnetic induction element 5 is tightly attached to the outer side of the topmost section of conductive metal body at the upper part of the trunk pipe 1; the magnetic induction element 5 is connected in parallel with a conductive wire at high water level; a metal straight pipe 8 is erected in an internal cavity of the main trunk 1; insulated plastic rings 9 are embedded in two ends of the metal straight pipe 8; a floater 6 capable of floating up or down in the internal cavity of the main trunk 1 is arranged above the metal straight pipe 8; a permanent magnetic ring 7 is embedded in the upper end of the floater 6; and an interface 10 communicated with a water box of the water heater is arranged below the trunk pipe 1; and a conductive wire leading hole 11 is formed on an outer side of the trunk pipe 1.

Description

The special-purpose case of solar water heater is responded to the bipolar electrode level sensor outward

Technical field

The utility model relates to a kind of solar water heater dedicated water level sensor.

Background technology

The level sensor of existing solar water heater adopts generally that electric pole type detects principle in the case, promptly utilizes the variable quantity of the resistance value that the conductive ion in the water produced at the water-immersed electrode surface of sensor, reaches the purpose of water level detecting.Because the water temperature in the water-heater water tank is higher, very easily produce incrustation scale on the electric conductor surface of electrode, cause the signal wrong diagnosis.Influenced stable control to water heater.

Summary of the invention

The purpose of this utility model, provide a kind of improved solar water heater dedicated water level sensor, because the water level induction electrode is outside water tank, be not subjected to the influence of high temperature in the case, slowed down the incrusted degree in electrodes conduct surface greatly, prolonged serviceable life, added a magnetic conduction circuitry at the high water stage place, when the electron ion signal was more weak in generation fouling of electrodes conduct surface or the water, the magnetic induction electrode produced signal, thereby had guaranteed the reliability of electrode signal.Solved the existing easy scaling of a case inner sensor electrode surface difficult problem out of control.According to connecting pipe principle, the utility model sensor is connected with the water-heater water tank lower outlet, and the main pipe of sensor is the column tube of an intermediate hollow cavity, is communicated with the water tank of water heater.This column tube is that plastic tube body is chimeric separately forms for the insulation of some joint metallic conduction bodys and some joints.An also endways metal straight pipe in the middle of the cavity of this main pipe, an insulated ring is respectively being inlayed at the two ends of this metal straight pipe, and feasible inwall with the metallic conduction body insulate the sensitivity that can flood and detect.Also have the float that can fluctuate in this metal straight pipe upper end in the main pipe cavity, float suitable for reading inlayed a permanent magnet ring.At the main pipe lateral surface, place, float top also has a magnetic induction part.When water heater is intake, water level in the water tank rises, water level in the sensor main pipe cavity also rises thereupon, and the metallic conduction body of each joint is transferred to the resistance change of water level on the related circuit by lead from low to high successively, is transferred to control main board by drawing lead.When if the electron ion signal in the water is more weak, or during the inner tubal wall scaling of metallic conduction body, water level continues to rise and makes the float come-up, the magnetic induction part of main pipe upper end outer wall, receive the magnetic signal closure, signal is spread out of, guaranteed the stability of sensor signal.When using hot water, the water level in the water heater tank progressively descends, and the water level in the sensor main pipe is also grand down synchronously.Its Principle of Signal Transmission is as the same, has realized the purpose of this utility model.

Description of drawings

The utility model is published picture by following examples and accompanying drawing, and Fig. 1 responds to the cross-sectional view of bipolar electrode level sensor outward for the special-purpose case of present embodiment solar water heater.1 is the main pipe of sensor among the figure, and 2 is the metallic conduction body, and 3 is plastic tube body, and 4 is lead, and 5 is magnetic induction part, and 6 is float, and 7 is magnet ring, and 8 is metal straight pipe, and 9 is insulating ferrule, and 10 is the water tank connector, and 11 is the lead outlet.Fig. 2 responds to the dual-electrode sensor installation outward for the special-purpose case of present embodiment solar water heater and is connected with the lower outlet of solar water heater water tank, form U-shaped communicating pipe state with water-heater water tank, water level and the water level in the sensor main pipe in the water tank are realized synchronously.

Embodiment

As shown in Figure 1, the special-purpose case of a kind of solar water heater is responded to the bipolar electrode level sensor outward.Main pipe 1 is insulated by some joint metallic conduction bodys 2 and plastic cement, and body 3 is chimeric separately to form, at every joint metallic conduction body lateral wall, lead 4 in boxing, the external side of contact tube of the highest joint is close to a magnetic induction part 5 on the top of main pipe 1, magnetic induction part 5 is in parallel with the high water stage lead, at the endways metal straight pipe 8 of the inner chamber of main pipe 1, inlaying plastic cement insulated ring 9 at the two ends of metal straight pipe 8, a float 6 that can fluctuate at the inner chamber of main pipe 1 is arranged above metal straight pipe 8, a permanent magnet ring 7 is being inlayed in the upper end of float 6, an interface that is communicated with water-heater water tank 10 is arranged below main pipe 1, a lead outlet 11 is arranged at the lateral surface of main pipe 1.Its principle of work is as follows: the interface 10 of the described sensor of present embodiment is connected with the water tank lower outlet of water heater, as shown in Figure 2, when the water tank water intake of water heater, according to connecting pipe principle, current also slowly enter the inner chamber of the main pipe 1 of sensor from interface 10, along with the rising of water level, the charged ion in the water contacts with the inside surface of every joint metallic conduction body 2, and the resistance change of generation is drawn through lead outlet 11 at the corresponding lead 4 in the tube wall outside by boxing and is transferred to main frame.Metal straight pipe 8 in main pipe 1 cavity because two ends have insulated ring 9 not contact with the inside surface of metal body 4, can improve the sensitivity that detects conductive ion in the water, strengthens the degree of reaction that water level signal changes.When conductive ion in the water is not enough or the inside surface of metal body 2 when producing incrustation scale, can't reflect the real change amount of water level.The float rising that water level continues to rise and makes the upper end that is in metal catheter 8, the signal that the magnet ring of float upper end produces makes and places the magnetic induction part 5 of being close to the outside, main pipe 1 upper end to produce action, signal is passed to main frame, guarantee the reliability of signal, realized the purpose of this utility model.

Claims

1. the special-purpose case of solar water heater is responded to the bipolar electrode level sensor outward, form by main pipe (1), metallic conduction body (2) and plastic cement insulation body (3), it is characterized in that: main pipe (1) forms by some joint metallic conduction bodys (2) and some joint plastic cement insulators (3) are chimeric separately, and the centre is hollow cavity body structure.

2. level sensor as claimed in claim 1, it is characterized in that: lead (4) in every joint metallic conduction body (2) lateral wall boxing, a magnetic induction part (5) is close in the metallic conductor outside at the highest joint, and magnetic induction part is in parallel with the high water stage lead.

3. sensor as claimed in claim 1, it is characterized in that: an endways metal straight pipe (8) in the cavity of main pipe (1), inlaying plastic cement insulated ring (9) at the two ends of metal straight pipe (8), in the top of metal straight pipe (8) float (6) that can fluctuate at the inner chamber of main pipe (1) is arranged, a permanent magnet ring (7) is being inlayed in the upper end of float (6).