CN2246782Y

CN2246782Y - Water controller of gas water heater

Info

Publication number: CN2246782Y
Application number: CN 94246230
Authority: CN
Inventors: 李红政
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-22
Filing date: 1994-11-22
Publication date: 1997-02-05
Anticipated expiration: 2004-11-22

Abstract

The utility model relates to a water controller of a gas water heater. The utility model solves the problem that a gas water heater in the prior art must be arranged in a bathroom so that users can regulate the water temperature by themselves. The utility model comprises a water controlled switch, an ignition and electric valve control circuit board and an electric gas valve. The key point is that a counter circuit which can carry out counting according to the number of the switching times of the water controlled switch, a multiplex switch circuit controlled by the counter circuit, and a wave-shaped generating circuit controlled by the multiplex switch circuit are arranged between the water controlled switch and the ignition and electric valve control circuit board. The electric valve is opened and closed by the output of the wave-shaped generating circuit through the ignition and electric valve control circuit.

Description

The gas heater water-control device

The utility model relates to a kind of gas heater technical field, particularly controls air inflow by water valve and carries out a kind of gas heater water-control device that water temperature is regulated.

In the prior art; so-called full-automatic gas-fired water heater is to grow up on the basis of original piezoelectricity pottery magnetic igniting and electronics electricity fire; they have mainly adopted the electronic circuit control device to make in conjunction with electromagnetic valve etc.; mainly comprise the water valve that has water-control switch as ten thousand its boiling water automatic ignition devices of precious cherub's gas heater; igniting and electric valve controling circuit plate; electric valve; when opening water valve; water-control switch is connected; to light a fire and electric valve controling circuit plate and power connection; make the firing circuit in igniting and the electric valve controling circuit plate, protection; testing circuit and electric threshold switch control circuit enter duty.The water yield of gas heater can be regulated by water valve, and tolerance is that water temperature then is to be jointly controlled by water valve and air valve by independently air valve adjusting.Its shortcoming exists as follows: 1. gas heater generally all is mounted in the bathroom, temperature regulation switch all is contained on the gas heater, this mainly is to be convenient to the user regulate, but because the space in the bathroom is less, the circulation of air is also relatively poor, and majority has only a people interior, in case gas heater incomplete combustion, or the gas leakage of gas heater somewhere, or the tracheae somewhere that is attached thereto gas leakage, consequence is with hardly imaginable.If water heater is installed in outside the bathroom than the ventilation, then in the bathroom, can't regulates water temperature.2. water valve one leaves, hot water just comes, if will make it go out cold water, or the battery in the full-automatic gas-fired water heater is taken out, or on full-automatic gas-fired water heater, set up a power switch, or with the valve closing of combustion gas or on full-automatic gas-fired water heater, set up an air valve.3. present gas heater temperature regulation switch is transferred to minimum; still there is certain flare; the water temperature that flows out gas heater must be than the high several years of water temperature that flow into gas heater; like this water temperature and people's from the beginning body temperature relatively near the time; one water boiling heater will feel that water temperature is too high, temperature regulation switch is transferred to minimum, feels that still water temperature is too high; particularly in southern summer, such phenomenon takes place in the regional regular meeting that autumn and hydraulic pressure are lower.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art and provides a kind of by valve switch number of times remote control water temperature, make gas heater can produce pulse flame, it is more complete to burn, the water temperature adjustable range is wider, and can carry out the gas heater water-control device that cold and hot water-bath is changed automatically back and forth.

The purpose of this utility model can reach by following measure: the gas heater water-control device, comprise water-control switch, igniting and electric valve controling circuit plate, electric valve, it is characterized in that between described water-control switch and igniting and electric valve controling circuit plate, also being provided with the counter circuit that can count according to the switch number of times of water-control switch, by the multi-way switch circuit of counter circuit control with by the wave generator circuit of multi-way switch circuit control, through igniting and electric valve controling circuit electric valve is carried out switch control by wave generator circuit output.

The purpose of this utility model can also reach by following measure: according to gas heater water-control device recited above, the key of present technique is also to be provided with between described water-control switch and the described counter circuit pulse generating circuit that can produce pulse signal according to the switch gap time of water-control switch.

The purpose of this utility model can also reach by following measure: according to gas heater water-control device recited above, the key of present technique is that described counter circuit is made of counter ic IC1, and the CLOCK end of counter ic IC1 links to each other with water-control switch.Wave generator circuit is by d type flip flop IC2 and capacitor C 3, C4, and the square wave generation circuit that diode D7, D8 and resistance R 4, R5 are linked to be constitutes, and the R end of d type flip flop IC2 links to each other by resistance with the output of counter circuit.

The utility model has following advantage than prior art: 1. can carry out water temperature by control valve switch number of times and regulate, like this water heater is installed in outside the bathroom than the ventilation, just can in the bathroom, regulate water temperature, eliminate the hidden danger that fuel gas is poisoned in the bathroom.2. owing to adopted the square wave of square wave generation circuit output that switch control is carried out in igniting and electric valve controling circuit, make gas heater produce pulse flame running water is heated, this makes burning of gas more complete.3. owing to adopted pulse flame that running water is heated, by adjusting pulse flame burning time and burning frequency, the water temperature in the time of can making the water outlet water temperature from water inlet is little by little progressively heightened, and the water temperature adjustable range is wider.

The drawing of accompanying drawing is described as follows:

Figure one is the circuit block diagram of the utility model gas heater water-control device.

Figure two is the circuit theory diagrams of the utility model gas heater water-control device.

The utility model is described in further detail below in conjunction with accompanying drawing embodiment: figure one has provided the circuit block diagram of gas heater water-control device, comprising the water valve that has water-control switch (1), igniting and electric valve controling circuit plate (2), electric valve (3), key is also to be provided with the counter circuit (4) that can count according to the switch number of times of water-control switch between described water-control switch (1) and igniting and electric valve controling circuit plate (2), by the multi-way switch circuit (5) of counter circuit (4) control and the wave generator circuit of controlling by multi-way switch circuit (5) (5), through igniting and electric valve controling circuit (2) electric valve (3) is carried out switch control by wave generator circuit (6) output.When valve switch once, water-control switch also switch once, counter circuit is counted once, exports a status signal, wave generator circuit produces a kind of square-wave signal according to this status signal, and the square wave of being exported by wave generator circuit carries out switch control to igniting and electric valve controling circuit.

Open the state of temperature that still can keep closing before the water after a period of time again for making gas heater close water, also being provided with between water-control switch (4) and described counter circuit (4) can be according to the pulse generating circuit (7) of the switch gap time generation pulse signal of water-control switch.Counter circuit (4) is made of counter ic IC1, and the CLOCK end of counter ic IC1 links to each other with water-control switch (1).Wave generator circuit (5) mainly is by d type flip flop IC2 and capacitor C 3, C4, the square wave generation circuit that diode D7, D8 and resistance R 4, R5 are linked to be constitutes, be parallel with resistance R 1, R2, R3 and diode D6 at the R of d type flip flop IC2 end, described multi-way switch circuit (5) is to be made of diode D3, D4, D5.As Q1, the Q2 of counter ic IC1, when the Q3 end is high potential, be added in the R end of d type flip flop IC2 by diode D3, D4, D5 and resistance R 1, R2, R3, utilize resistance R 1, R2, R3 and capacitor C 3 various combinations to adopt and make d type flip flop IC2 produce the square wave of different frequency and dutycycle, when Q1 and Q4 are high potential, by or a door IC4 counter ic IC1 is carried out zero clearing.Pulse generating circuit (7) is made of d type flip flop IC3, the R of d type flip flop IC3, Q end links to each other as output, diode D1 is serially connected in two ends that power supply E connects with water-control switch with capacitor C 1, the D end of d type flip flop IC3 is connected on the node of diode D1 and capacitor C 1, and the CLOCK of d type flip flop IC3 end is connected on the node of diode D1 and power supply E.The CLOCK end of d type flip flop IC3 is connected on the node of diode D1 and power supply E.Open water valve, water-control switch (4) is connected, power supply E charges to capacitor C 1 through diode D1, because the voltage on the capacitor C 1 originally was zero, Gu the Q of d type flip flop IC3 end still is low (height), switch is once again with water valve, also switch is once for water-control switch (4), at this moment, because the voltage on the capacitor C 1 is charged to high voltage by water-control switch (4) the closure first time, high level of Q end output of d type flip flop IC3 is through the zero clearing of the R of trigger IC3 end, form pulse signal, as the input signal of counter circuit (5), like this, close water at gas heater and open again after a period of time, voltage on the capacitor C 1 is put to zero, thereby has guaranteed that gas heater closes water and opens the state of temperature that still can keep closing before the water after a period of time again.After gas heater is opened, want to turn down (or heightening) temperature, only needing water valve to close opens once again, the Q1 of counter circuit (5) is a high level, secondary is opened in the pass, Q2 is a high level, Q1 is a low level, closes to open Q1 three times, Q2 is high level, so go down, Q output at counter circuit (5) produces a series of different level, by the switching diode in the multi-way switch circuit (5), is added in the resistance R 1 in the wave generator circuit (6) respectively, R2, change charging interval on the R3 to capacitor C 3, thereby should become the frequency or the dutycycle of wave generator circuit (6) output square wave, reach the purpose of temperature adjustment.Want to carry out cold and hot water-bath conversion back and forth automatically, only need the electrical quantity of the resistance R 1 in the wave generator circuit (5), R2, R3 and capacitor C 3 is carried out choose reasonable, make the square wave of wave generator circuit (6) output than low frequency, then can make igniting and electric valve controling circuit plate (2) open electric valve (3) lights a fire simultaneously, through after a while, close electric valve (3) then again, so move in circles.For making the power saving of this gas heater water-control device, the key of present technique is that diode D2 and capacitor C 2 are serially connected in the two ends of power supply, and counter ic IC1 is CMOS, and the power end VD of counter ic IC1 is connected on the tie point of diode D2 and capacitor C 2.

Claims

1. gas heater water-control device, comprise water-control switch (1), igniting and electric valve controling circuit plate (2), electric valve (3), it is characterized in that between described water-control switch (1) and igniting and electric valve controling circuit plate (2), also being provided with the counter circuit (4) that to count according to the switch number of times of water-control switch, by the multi-way switch circuit (5) of counter circuit (4) control and the wave generator circuit of controlling by multi-way switch circuit (5) (6), through igniting and electric valve controling circuit (2) electric valve (3) is carried out switch control by wave generator circuit (5) output.

2. gas heater water-control device according to claim 1 is characterized in that also being provided with between described water-control switch (1) and the described counter circuit (4) pulse generating circuit (7) that can produce pulse signal according to the switch gap time of water-control switch.

3. gas heater water-control device according to claim 1 and 2 is characterized in that described counter circuit (4) is made of counter ic IC1, and the CLOCK end of counter ic IC1 links to each other with water-control switch (1).

4. gas heater water-control device according to claim 1 and 2, it is characterized in that described wave generator circuit (5) is by d type flip flop IC2 and capacitor C 3, C4, the square wave generation circuit that diode D7, D8 and resistance R 4, R5 are linked to be constitutes, and the R end of d type flip flop IC2 links to each other by resistance with the output of counter circuit (5).

5. gas heater water-control device according to claim 1 and 2 is characterized in that described multi-way switch circuit (5) is to be made of diode.

6. gas heater water-control device according to claim 3, it is characterized in that diode D2 and capacitor C 2 are serially connected in the two ends of power supply, counter ic IC1 is CMOS, and the power end VD of counter ic IC1 is connected on the tie point of diode D2 and capacitor C 2.

7. gas heater water-control device according to claim 2, it is characterized in that described pulse generating circuit (7) is made of d type flip flop IC3, the R of d type flip flop IC3, Q end links to each other as output, diode D1 is serially connected in two ends that power supply E connects with water-control switch with capacitor C 1, the D end of d type flip flop IC3 is connected on the node of diode D1 and capacitor C 1, and the CLOCK of d type flip flop IC3 end is connected on the node of diode D1 and power supply E.