CN2408396Y

CN2408396Y - Electric water heater

Info

Publication number: CN2408396Y
Application number: CN 99258149
Authority: CN
Inventors: 朱殿臣
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-29
Filing date: 1999-12-29
Publication date: 2000-11-29
Anticipated expiration: 2009-12-29

Abstract

The utility model relates to an electric water heater, wherein, the lower side of a water chamber (1) of which is particularly provided with a water mixing control valve (4) which is connected with the water chamber (1) through a connecting pipe (2) and a connecting pipe (3). The utility model is characterized in that an upper cover of the water mixing control valve (4) is provided with a casing (5); the casing (5) is provided with a display and a key (6); water discharging temperature can be automatically controlled through an integrated circuit and a temperature probe (T-[2]) of a circuit board and each of switches according to a set temperature. The utility model has the advantages of favorable performance, automatic water discharging temperature control according to the set value, ease assembly, beautiful appearance, convenient operation, etc. The utility model thoroughly overcomes the defects of the trouble of regulating the water discharging temperature and uneven cold and hot water by means of the manual regulation of cold and hot water mixing ratio.

Description

Electric water heater

The utility model relates to water heater, particularly the electric heater of constant-temperature effluent control.

There is following shortcoming in existing domestic, electric water heater: 1. leaving water temperature will rely on artificial adjustment hot and cold water mixed proportion to reach the purpose of regulating water temperature; 2. the manual adjustment temperature not only bothers, and be easy to generate uneven in temperature, cold a little while, Re phenomenon a little while.

The purpose of this utility model is will rely on the shortcoming and defect of manual adjustment temperature and provide a kind of performance good at above-mentioned existing electric heater, can be temperature automatically controlled, and be easy to assembling and use the electric water heater of good looking appearance.

The purpose of this utility model is achieved through the following technical solutions:

A kind of electric water heater, comprise water courage (1), junction pipe (2), (3), outlet pipe (14), below water courage (1), be provided with mixed water regulating valve (4) specially, mix water regulating valve (4) and connect with water courage (1) and water inlet pipe (15), water level temp probe (T is housed on water courage (1) by junction pipe (2), (3) ₁).Mix on the water regulating valve (4) and be covered with shell (5), display and button (6), circuit board (9) are housed on shell (5).Mix water regulating valve (4) by mixed water valve (4-1), temp probe (T ₂), flow switch (4-4), safety valve (4-5), hand valve (4-6), motor (11) form, wherein: the two ends of mixing water valve (4-1) are respectively hot water or cold water's import, mix water valve (4-1) inside spool (4-8) is housed, and on spool (4-8) bar portion external part cogged, this gear is meshed with gear on the motor (11).On the pipeline (4-7) that mixes water valve (4-1), have socket (4-2), on socket (4-2), be plugged with temp probe (T ₂), be divided into two-way below the pipeline (4-7), and flow switch (4-4) is housed.

The utlity model has following advantage:

1. mixed water regulating valve 4 of the present utility model is connect by

pipe

2,3 and water courage 1, is positioned at water courage below, mixes water regulating valve 4 and is covered with shell 5, the display button is installed on shell 5, not only good looking appearance, and installation is simple, and display demonstration height and button operation height are more reasonable.

2. when in the water courage 1 when anhydrous, electrothermal tube 13 can not switched on, and has really realized preventing the function of dry combustion method.

3. the temperature water-level probe is shared one, can save an electrode, and only opens one and insert fixing hole on the water courage.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structure chart of electric water heater of the present utility model

Fig. 2 mixes the water regulating valve schematic diagram

Fig. 3 mixes the water valve cutaway view

Fig. 4 is a water level temp probe cutaway view

Fig. 5 is the safety valve cutaway view

Fig. 6 is circuit theory diagrams

Fig. 7 is existing electric heater structure chart

Be described further below in conjunction with drawings and Examples:

By Fig. 1 and Fig. 7 more as can be seen, the something in common of electric water heater of the present utility model and existing electric heater is all have water courage 1,

junction pipe

2,3, outlet pipe 14, and 1 li electrothermal tube 13 is housed at the water courage, different is: existing electric heater is to regulate cold with manual modulation valve 11, the hot water mixed proportion, the leaving water temperature of manual adjustment outlet pipe 14, electric water heater of the present utility model then is provided with specially below water courage 1 and mixes water regulating valve 4, by predefined temperature requirement, adjust the leaving water temperature of water pipe by mixed water regulating valve 4 automatically.Can see by Fig. 1 and Fig. 2, mix water regulating valve 4 by mixed water valve 4-1, temp probe T ₂, flow switch 4-4, safety valve 4-5, hand valve 46, motor 11 form, running water is by 15 fens two-way of water inlet pipe, one route junction pipe 3 enters water courage 1, another road directly joins with mixed water valve 4-1, the hot water of water courage 1 enters by junction pipe 2 and mixes water valve 4-1, on the pipeline 4-7 that mixes water valve 4-1, have socket 4-2, on socket 4-2, be plugged with temp probe T ₂, be divided into two-way and flow switch 4-4 is housed below the pipeline 4-7, the one tunnel leads to delivery port 4-3, another road and hand valve 4-6 join, below entering hand valve 4-6, have safety valve 4-5, dry-reed tube switch 16 is housed on safety valve 4-5, switch 10 is housed on the hand valve.

Circuit board 9 by electric wire respectively with water courage 1 on water level temp probe T ₁, the temp probe T on the pipeline 4-7 ₂And dry-reed tube switch 16, switch 10, motor 11 join.

Mix on the water regulating valve 4 and be covered with shell 5, display and button 6 are housed on shell 5.Water level temp probe T is housed on water courage 1 ₁

Shown in Figure 3 is the concrete structure schematic diagram that mixes water valve 4-1, its two ends are respectively hot water or cold water's import, and (promptly an end and water inlet pipe 15 join, the other end and junction pipe 2 join), mix water valve 4-1 inside spool 4-8 is housed, and on spool 4-8 bar portion external part, the gear (see figure 2) being housed, this gear is meshed with gear on the motor 11, makes spool 4-8 forward or reverse by motor 11, block or open (or partially opening) hot water or cold water's water inlet, thereby reach the purpose that adjusts coolant-temperature gage.

Shown in Figure 4 is water level temp probe T ₁The installation connection diagram, sealed insulation cover 7-2 is arranged on its metal shell 7-1, so as with the insulation of water courage 1 wall portion, join at the pin b that is welded with the IC on lead-in wire 7-3 and the circuit board on the metal shell 7-1.

Shown in Figure 5 is the concrete structure of safety valve 4-5, and spool 4-9 and spring 4-10 are housed in its inside, and spool 4-9 is sealed delivery port, and when inner pipe water pressure during greater than spring pressure, spool 4-9 is backed down, and reaches the purpose of pressure release.

Shown in Figure 6 is circuit diagram, and the circuit on the circuit board 9 comprises IC, display, triode BG ₁～BG5 and button etc., wherein: a of IC holds and represents the switch 10 of discharge or dry-reed tube switch 16 to link, and is the water-flow signal input, b end and water level temp probe T ₁Metal shell 7-1 link, be the water level signal input, c, d the end with temp probe T ₂Link e, F end and water level temp probe T ₁Link, g1, g2, g3, g4 end respectively with triode BG ₂, BG ₅, BG ₃, BG ₄Link, be the motor positive and inverse control end, the L end links with power positive end, I end and resistance R ₁, triode BG ₁The control relay adhesive that links, the n end is power supply negative terminal, water courage 1 outer wall and power supply negative terminal connection.

T ₁Being water courage temp probe, also is water-level probe simultaneously, can set the temperature in the water courage 1, and be shown by display, and when the courage temperature was lower than setting value, relay adhesive electrothermal tube began heating, and when courage temperature during greater than setting value, relay discharges the electrothermal tube outage.

T ₂Be water heater leaving water temperature probe, can set and show to have water-flow signal that output signal is just arranged during adjusting by display to leaving water temperature, switch 10 can be represented water-flow signal, open hand valve 4-6 shift fork and leave switch 10, K disconnects, when measured value is lower than setting value, the output output signal rotates motor and through the gear reduction rotational valve core, allow hot water increase cold water and reduce, improve the outlet water temperature, when measured value equals to set value, output signal stops, and motor stops operating; When the measurement temperature was higher than setting value, motor is rotated the output output signal and through the reduction box rotational valve core, allowing hot water reduce cold water increases, and equals to set value output signal until measured value and stops.

Water level temp probe T ₁Be outside probe metal tube 7-1, to put an insulated enclosure cover 7-2 to make it fixing back and 1 insulation of water courage, the metal tube lead-in wire of burn-oning, draw with water courage 1 and form pair of electrodes, when anhydrous, pull-up resistor draws the b end and is a high position in the IC, this moment, relay can not adhesive, the electrothermal tube no power, water surpasses electrode in the water courage, and the resistance of water very wisp IC end draws and is low level, this moment, relay allowed adhesive, the electrothermal tube energising.

Claims

1. electric water heater, comprise water courage (1), junction pipe (2), (3), outlet pipe (14), it is characterized in that: below water courage (1), be provided with mixed water regulating valve (4) specially, mix water regulating valve (4) and connect with water courage (1) and water inlet pipe (15), water level temp probe (T is housed on water courage (1) by junction pipe (2), (3) ₁).

2. electric water heater according to claim 1 is characterized in that: mix on the water regulating valve (4) and be covered with shell (5), display and button (6) are housed on shell (5).

3. electric water heater according to claim 1 is characterized in that: mix water regulating valve (4) and be made up of mixed water valve (4-1), temp probe (T2), flow switch (4-4), safety valve (4-5), hand valve (4-6), motor (11).

4. electric water heater according to claim 1 is characterized in that: water level temp probe (T ₁) sealed insulation cover (7-2) is arranged on the metal shell (7-1), on metal shell (7-1), be welded with lead-in wire.