CN2255586Y

CN2255586Y - Quick-acting electric water-heater

Info

Publication number: CN2255586Y
Application number: CN 96208135
Authority: CN
Inventors: 寇建华
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-26
Filing date: 1996-03-26
Publication date: 1997-06-04
Anticipated expiration: 2006-03-26

Abstract

The utility model relates to a quick-acting electric water heater using an electric heating film and a heating pipe to heat, and the utility model uses a new combined joint and a water-pressure water-flow control device to solve the defects that the electric water heater of the prior art has danger, unreliability, short service life, poor assembling process, large volume, etc. The utility model has comprehensive functions of digital temperature display, thin film isolating and light-contact on-off control and water cut-off, overtemperature and water blocking protection and has compact structure and small volume.

Description

Quick electric water heater

The utility model relates to a kind of civilian quick electric water heater of electrothermal film heating pipe heating.

It is unreasonable that present electric heater with the electrothermal film heating pipe heating exists structural design, dangerous, life-span is short, fluctuation of service, efficiency of assembling is low, volume is big, show not directly perceived, defectives such as operation inconvenience, the pipe joint that is connected with other pipe fitting as electrothermal film heating pipe all is incorporate elbow or the straight tube heads that adopt elastomeric material to make, and fix with seal glass glue or metal clamps, cold and heat succeed each other owing to be in often, ageing of rubber, leaking very easily appears in the pressurized deformed state, wash open, phenomenons such as fracture, thereby cause danger, efficiency of assembling is also very low, is difficult for changing; Cut off the water supply, go out water slug holding circuit job insecurity owing to not adopting suitable hydraulic pressure current control to make cutting off the water supply, go out aspect the water slug; Water temperature does not show that control circuit adopts heavy-current control forceful electric power, console switch and hull outside is non-watertight, power regulation is operated inconvenience etc.

The purpose of this utility model be to provide a kind of safe and reliable, the life-span long, easy to operate, assembling good, perfect in shape and function, the small and exquisite quick electric water heater of volume.

Technical solutions of the utility model are as follows:

This water heater by housing, water inlet pipe mouth, effluent pipe mouth, electrothermal film heating pipe, water cut-off protection switch, go out water slug protection switch, overtemperature prote switch, electrical control and water temperature shows and combination section header, hydraulic pressure flow control apparatus for water etc. constitute.The effect of built-up joint is to be used for an electrothermal film glass heating tube and other pipe fitting to couple together easily reliably; The hydraulic pressure flow control apparatus for water is serially connected in the water cut-off protection switch and goes out and plays the stable effect of cutting off the water supply and going out the water slug holding circuit on the outlet pipeline between the water slug protection switch.Built-up joint is the movable joint that matches with the sealing ring profile of inner cone by conulite sealing ring, an end and constitutes with elbow or straight tube head that movable joint is connected.The hydraulic pressure flow control apparatus for water is that a centre has one section barretter two to be connected with the assembly of current limliting diameter changing device respectively.Heating power adopts classification Power Regulation mode; The water temperature indication adopts numeral to show; Temperature shows and guidance panel adopts plastic film or alternate manner and hull outside to isolate with waterproof.

Thereby owing to adopted such scheme to make the utility model that the very big rule that change arranged compared to prior art: first because the effect electrothermal film heating pipe of built-up joint is very reliable with being connected of other pipe fitting, connected mode is more flexible, can make that more reasonable compacter, assembling of complete machine structure and production efficiency are higher; Thereby second because adopted combined type hydraulic pressure current Control Component to make to cut off the water supply, go out the water slug protection and the operation of whole electrical system more reliable and more stable; owing to be combined type just in case take place also can in time clear up when incrustation scale or other foreign matter cause water outlet smooth; owing to the moistureproof water proof of water temperature demonstration, display operating panel and hull outside has been arranged and has controlled forceful electric power, thereby operated safer, directly perceived, convenient with light current.

1-5 makes a more detailed description the utility model in conjunction with the accompanying drawings by the following examples.

Fig. 1 is the complete machine structure schematic diagram.

Fig. 2 is the combined elbow schematic diagram.

Fig. 3 is hydraulic pressure flow control apparatus for water (symmetric halves) structural representation.

Fig. 4 is electric control theory figure.

Fig. 5 is the digital display circuit schematic diagram.

Water inlet (1) and delivery port (17) are equipped with in the bottom of housing (5), the water inlet lower end links to each other with running water, the upper end is by compound tube joint (2)---and combination straight tube head links to each other with electrothermal film heating pipe (3), have three electrothermal film heating pipes (3) in the present embodiment, adopt compound tube joint (6) one combined elbows to couple together between them by the mutual headtotail of flexible conduit (7), the terminal delivery port of last electrothermal film heating pipe (3) is connected with hydraulic pressure flow control apparatus for water (18) by combined elbow (6) the threeway mouth of pipe (23) that links to each other with threeway (9), the other end (28) of threeway (9) joins with the water cut-off protection switch, and hydraulic pressure flow control apparatus for water (18) is by the current limliting diameter changing device---throttle orifice pad (26), sealing ring (24) (25), pipe joint (27), the pipe joint (27) of the current stabilization flexible pipe (29) and the other end, throttle orifice pad (26), sealing ring (24) (25) constitutes; Pipe joint (27) couples together with the screw threads for fastening connected mode and the threeway mouth of pipe (23), and throttle orifice pad (26) and sealing ring (24) (25) sealing are anchored in it; The hydraulic pressure flow control apparatus for water is terminal to link to each other with another threeway (15), the threeway mouth of pipe (28) with go out water slug protection switch (16) and link to each other, the threeway mouth of pipe (22) links to each other with effluent pipe mouth (27), constitutes complete system pipeline thus.

Built-up joint (2) (6) by conulite sealing ring (20), an end be inner cone with sealing ring (20) shape can match the movable joint (19) that is connected, form with elbow (21) or straight tube head that movable joint (19) is connected in the screw threads for fastening mode.By rotating that fastening movable joint (19) can be given sealing ring (20) thus a radial and axial pressure can make the tube head of electrothermal film heating pipe (3) firmly be connected with elbow (21) or the sealing of straight tube head.

Two electrodes are arranged on the every electrothermal film heating pipe, link to each other with control circuit board (11) by lead, be connected to the 220V AC power on the control circuit board, one end of AC power is in parallel by the normally opened contact J11 of master relay J1 and an electrode (4) of every electrothermal film heating pipe (3), another utmost point of electrothermal film heating pipe links to each other with the other end of AC power by respective branch relay J 2, normally opened contact J21, the J31 of J3, J4, J41 respectively, constitutes heating major loop (11); Major loop (11) is controlled by operation push-button K1, K2, K3, the K4 on the guidance panel (13); The alternating current 220V power supply gives for step-down transformer B through the normally opened contact KW of water cut-off protection switch (10), thereby at rectifier bridge D1, D2, D3, the output of D4 obtains low-voltage dc power supply, the anodal elder generation of this power supply is after the contact JR of overtemperature prote switch (14), go out the coil of the contact KD of water slug protection switch (16) and main relay J1 and touch or interlock switch K1, K2, K3, the end of K4 is in parallel to link to each other, each K switch 1, K2, K3, the other end of K4 is respectively at indicator lamp LM1, LM2, LM3, the end of LM4 links to each other, and also is connected with branch road relay J 2 respectively on the common node of each switch and each corresponding indicator lamp except that switch K1, J3, J4; The end of the other end of all indicator lamps and current-limiting resistance R1 is in parallel, and the other end of resistance R 1 and each relay J 1, J2, J3, J4 and the negative pole of dc source all are connected in parallel; Interlocking diode D5, D6 are connected across respectively between relay J 4 and J3 and J3 and the J2 by polarity, and promptly the positive pole of D5 connects the cathode voltage input of J4, and the negative pole of D5 connects the cathode voltage input of J3, and D6 analogizes.Constitute thus and have into that water is switched on automatically, cut off the water supply, overtemperature, go out water slug outage protection automatically, with light current control forceful electric power, inter-stage interlocking classification Power Regulation, and control circuit that can the display operation state.

Temperature transmission circuit that the dc power supply that the water temperature display circuit is made up of transformer B, rectifier bridge D7, D8, D9, D10, capacitor C 1, C2, integrated package of pressure-stabilizing IC1, temperature-sensitive element Dt, resistance R 6, R7, potentiometer RW2 constitute and the conversion display circuit that mainly is made of analog to digital conversion circuit IC2, charactron LED constitute, and wherein IC2 is 3 half A/D conversion chips 7107 commonly used.

Claims

1. quick electric water heater; comprise housing (5), water inlet pipe mouth (1), effluent pipe mouth (17), electrothermal film heating pipe (3), pipe joint water cut-off protection switch (10), go out water slug protection switch (16), overtemperature prote switch (14), electrical control and display circuit; it is characterized in that pipe joint is a kind of built-up joint (2) (6); electrothermal film heating pipe (3) is connected with other pipeline by built-up joint (2) (6), at water cut-off protection switch (11) with go out also to be connected with hydraulic pressure flow control apparatus for water (18) between the water slug protection switch (16).

2. quick electric water heater according to claim 1, it is characterized in that making up section header (2) (6) and be a kind of is the articulation that the movable joint (19) that matches with the sealing ring profile of inner cone and the elbow (21) that is connected with movable joint (19) or straight tube head are formed by conulite sealing ring (20), an end.

3. quick electric water heater according to claim 1 is characterized in that the hydraulic pressure flow control apparatus for water is the assembly that there is respectively limited rheology footpath, one section barretter two device a centre.