CN2386367Y - Multiple cylinder electric heating core flow water heater - Google Patents

Abstract

The utility model relates to a domestic electric water heater, particularly a multi-layer cylinder electric heating core type flow water heater. The multi-layer cylinder electric heating core type flow water heater is composed of a shell body, an upper end cover, a lower end cover, a high temperature sealing pad, an installation plate, a multi-layer cylinder electric heating core, an installation bracket, a circular top cover, a connection block, a pressure safety valve, a temperature limiter, a top screw cap, a water inlet pipe joint, a water outlet pipe, a partition board, an exhaust pipe, an electric leakage probe, and an electric control box. The multi-layer cylinder electric heating core has large heat conduction area, high heat utilization rate, high heat efficiency, quick heating speed, double insulation, large safety factor, compact structure, small volume, and low manufacturing cost. The multi-layer cylinder electric heating core type flow water heater can be directly installed on a tap water pipe to prepare for bath water or drinking water.

Description

The multi-layer cylinder electric heating core water heater that flows

The utility model is a domestic, electric water heater, particularly a kind of multi-layer cylinder electric heating core water heater that flows.

According to retrieval, existing domestic, electric water heater is various in style, structure is different, performance respectively has quality, but the electric heater heating core that flows has only three kinds: a kind of is tubular electrothermal element, and the surface of body is not charged, but heat transfer area is little, and firing rate is slow; A kind of is the spirality nichrome wire that exposes, a kind of is electric pole type, heating wire or electrode directly place the flowing water passage, thermal efficiency height, firing rate is fast, but water also has electricity flowing through the heated while of heating wire or electrode, must adopt effective safety measure, strict earthing or grounding means reliably, safety coefficient is little; The multi-layer cylinder formula heating core that firing rate is fast, safety coefficient is big is not arranged as yet.

The purpose of this utility model be design a kind of with the multi-layer cylinder heating core do heating, heat transfer area greatly, heat utilization efficiency and thermal efficiency height, firing rate is fast, insulation effect good, safety coefficient is big and volume is small and exquisite, cheap, can be directly installed on the mobile water heater on the running water pipe.

The multi-layer cylinder electric heating core of making according to the utility model water heater that flows, as Fig. 1, Fig. 2, shown in Figure 3, form by housing (1), upper end cover (2), bottom end cover (3), elevated-temperature seal pad (4), installing plate (5), multi-layer cylinder heating core (6), mounting bracket (7), gas dome (8), tagblock (9), pressure safety valve (10), temperature limiter (11), top nut (12), admitting pipe joint (13), outlet pipe (14), dividing plate (15), blast pipe (16), electric leakage probe (17), electric-controlled box (18).Housing (1) two ends have screw thread to be connected with upper end cover (2), bottom end cover (3), have elevated-temperature seal pad (4) to prevent to leak in two junctions; Stainless installing plate (5) directly is contained between housing (1) and the upper end cover (2); Multi-layer cylinder heating core (6), every layer is welded on the installing plate (5) by two hollow threading posts (22), and installing plate (5) central authorities are temperature controlled compartments, and temperature limiter (11) and electric leakage pop one's head in (17) are installed; Mounting bracket (7) is heterocoelous, and there is a top screw rod in central authorities, is fixed on the upper end cover (3) by two screws, and tagblock (9) is fixed on the mounting bracket (7); Pressure safety valve (10) is fixed on the installing plate (5); Gas dome (8) central authorities have an aperture to be enclosed within on the top screw rod of mounting bracket (7), and are fixing with top nut (12); The side of bottom end cover (3) is admitting pipe joint (13), is connected with running water pipe, and outlet pipe (14) is installed in the middle of the bottom end cover (3); Outlet pipe (14) is made up of water outlet straight tube and water exit elbow, and both are fixed on the bottom end cover with screw thread with thread connection and by elbow; There is the dividing plate (15) of mesopore to overlap outlet pipe (14) and is fixed on the bottom end cover (3); Be equipped with blast pipe (16) in the outlet pipe (14), the bubble that water produces in heating process is discharged with water by blast pipe; Multi-layer cylinder heating core (6) is by cylindrical shape chuck (19), heating wire (20), earthenware (21), the hollow threading post of copper (22), micarex (23) is formed, cylindrical shape chuck (19) is the cylindrical shape double-jacket that stainless steel or beryllium-bronze plate are made, heating wire (20) outside puts earthenware (21), spiral equably and be covered with in cylindrical shape chuck (19), the whole liner micarexs of cylindrical shape chuck (23), the two ends end to end of heating wire (20) put earthenware (21), passing hollow threading post (22) is connected with tagblock (9), threading post (22) one ends and installing plate (5) welding, the other end and cylindrical shape chuck (19) welding, the tight sealing of every layer of cylinder heating core (6) upper and lower side brazing, then heating wire (20) is by earthenware (21) micarex (23) double insulation, dielectric strength can reach 2M Ω, thereby insulation effect is good, safety coefficient is big, multi-layer cylinder heating core size layer overlaps, every layer of tube with tin between leave the 2mm crack, and 5mm straggly up and down, form the circulating water heat tunnel.When energising, water flows into bottom end cover (3) from the running water pipe admitting pipe joint (13) of flowing through, enter in the direction of arrows tube with tin between the 2mm crack, the sheet flow two sides is heated by the cylinder heating core in crack, heat transfer area is big, and current are through multi-layer cylinder heating core (6), and the water stream channel of multilayer crack successively repeats heating to circulating water, heat utilization efficiency and thermal efficiency height, firing rate is fast, therefore about 10 seconds, just can supply 40-60 ℃ of hot water continuously; Water heater is provided with high temperature shelves and low temperature shelves heater switch, high temperature shelves 2.4kw, and low temperature shelves 1.4kw is for selecting for use; Pressure safety valve (10) is that chance failure produces when vapor pressure surpasses the pressure limit that sets and shields, and 70 ℃ of temperature limiter (11) preset temperature surpass 70 ℃ and shield; Electric leakage probe (17) one ends are connected with control circuit, and the other end is immersed in the water, and electrical leakage voltage surpasses the 12V power-off protection in water; Electric-controlled box (18) is split with water heater, dress relay k1, k2,12V transformer, three press buttones in the box, "on" and "off", " high temperature " (25) and " low temperature " (24), " temperature control " (26) and " temperature control is non-" (27); The outlet pipe leaving water temperature is controlled by water flow, and when water flow was constant, leaving water temperature was also constant.

The utility model adopts multi-layer cylinder heating core heating circulating water, heat transfer area is big, heat utilization efficiency and thermal efficiency height, firing rate is fast, insulation effect good, safety coefficient is big, compact conformation, volume are small and exquisite, cheap, can be directly installed on to prepare bath water or drinking water on the running water pipe.Be widely used in family, group, hotel, hotel, catering trade.

Accompanying drawing 1 is that structural representation of the present utility model, Fig. 2 are that expanded view, Fig. 3 of individual layer cylinder heating core is electric control schematic diagram.

Utilize accompanying drawing, the utility model is described in further detail:

When not heating, pushbutton switch " pass ", power cutoff does not have on the water heater.When need hot water, pushbutton switch " is opened ", connect power supply, each layer cylinder heating core power is respectively 1kw, 0.8kw, 0.6kw, when operation " low temperature " switch, second, three layers of heating core energising, power 1.4kw, when operation " high temperature " switch, three layers of heating core energising, power is 2.4kw, because of circulating water is successively repeated heating by multi-layer cylinder heating core crack, the water outlet water temperature can reach 40-60 ℃ about 10 seconds, flow reaches 3-4L/min, when the needs drinking water, operation " high temperature " and " temperature control is non-" switch, then the control circuit dead electricity is controlled discharge again, can provide about 95-100 drinking water 1L/min.Power line is by the normally-closed contact of relay k1, divide the high and low temperature form to be connected on the heating core, the normally opened contact control k1 of relay k2, in the control circuit of k2, temperature detect switch (TDS), temperature limiter contact or pressure safety valve contact, as long as wherein there is a place to connect, k2 gets electric, makes the k2-1 contact by often opening jumping normally closed, and k1 gets, k1-1 and k1-2 are often being opened, then the heating core dead electricity by normally closed jumping.

Claims (1)

1. the multi-layer cylinder electric heating core water heater that flows, this water heater is by housing (1), upper end cover (2), bottom end cover (3), elevated-temperature seal pad (4), installing plate (5), multi-layer cylinder heating core (6), mounting bracket (7), gas dome (8), tagblock (9), pressure safety valve (10), temperature limiter (11), top nut (12), admitting pipe joint (13), outlet pipe (14), dividing plate (15), blast pipe (16), electric leakage probe (17), electric-controlled box (18) is formed, it is characterized in that: multi-layer cylinder heating core (6) is by cylindrical shape chuck (19), heating wire (20), earthenware (21), the hollow threading post of copper (22), micarex (23) is formed, heating wire (20) outside puts earthenware (21), spiral equably and be covered with in cylindrical shape chuck (19), cylindrical shape chuck (19) is liner micarex (23) all, the two ends end to end of heating wire (20) put earthenware (21), passing hollow threading post (22) is connected with tagblock (9), threading post (22) one ends and installing plate (5) welding, the other end and cylindrical shape chuck (19) welding, the tight sealing of every layer of cylinder heating core (6) upper and lower side brazing, the big or small layer overlaps of multi-layer cylinder heating core (6), leave crack between every layer of tube and the tube, and straggly up and down, form the circulating water heat tunnel.

Images