CN100498114C - Automatic constant temperature valve of gas water heater - Google Patents

Abstract

A gas water heater automatic thermostatic valve includes an air valve body, a linkage valve and a valve, which is technically characterized in that the valve also includes a pressure proportion regulation valve, a linkage shaft fine trimming device and a linkage shaft. The axial lines of the pressure proportion regulation valve, the linkage shaft fine trimming device, the linkage shaft and the linkage valve are the same straight line. The linkage shaft is connected with the valve. The air inlet of the pressure proportion regulation valve is communicated with the air valve body. The air outlet of the pressure proportion regulation valve is communicated with the linkage valve. The pressure proportion regulation valve includes a left pressure plate, a valve body connected to the left pressure plate, a diaphragm which is connected to the cavity of the valve body and can move in the cavity, a valve core which is connected to the diaphragm and separates a cavity enclosed by the valve body and the left pressure plate into two cavities, a balancing spring, the two ends of which are respectively connected to the inner wall of the left pressure plate and the outer wall on the left end of the valve core, a thrust spring, the two ends of which are respectively connected to the outer wall on the right end of the valve core and the linkage shaft fine trimming device and a right gland which is connected to the right end of the valve body. The valve has the advantages of effective automatic constant temperature, etc.

Description

Automatic constant temperature valve of gas water heater

Technical field: the present invention relates to a kind of gas heater and regulate the thermostatic valve that keeps leaving water temperature constant temperature automatically.

Technical background: the water temperature control of existing gas heater roughly is divided into two kinds: a kind of is manual control, regulate gas valve knob and water valve knob by the user, modulate the leaving water temperature that oneself needs with the size of gas quantity and the size change of the water yield, when variation in water pressure and air pressure change, leaving water temperature just changes, can't accomplish automatic constant-temperature, and hydraulic pressure or air pressure also may cause water temperature to swash drastic changeization when swashing drastic change, have the potential safety hazard of scalding the people, this water temperature control mode is applied in the chimney flue type gas heater.Another kind is automatically controlled water temperature constant temperature, the electric controller of gas heater is popped one's head in by leaving water temperature, detect the variation of water temperature, calculate by microcomputer chip, output signal, the air valve adjustment that the proportioning valve of control combustion gas or stepper motor drive is for the gas quantity size, keep water termostat, this mode is because be to have produced the size of just adjusting the gas supply amount after the variations in temperature, a hysteresis arranged from the time, if during the sharp drastic change of hydraulic pressure, temperature adjustment lags behind, range of temperature is still bigger, has potential safety hazard equally, and makes complicated, cost is higher, and this water temperature control mode is applied on forced-ventilated and the balanced type gas heater.For overcoming above-mentioned defective, automatic constant temperature valve of gas water heater is developed.

Summary of the invention: technical problem to be solved by this invention provides a kind of automatic constant temperature valve of gas water heater, and it can realize eliminating safe hidden trouble automatic constant-temperature effectively, improves the comfortableness of bathing, and simple in structure, low cost of manufacture.

The technical scheme that the present invention solves its technical problem employing is: it comprises air valve body, magnetic valve, the regulating the qi flowing in the channels gas valve core, interstage valve, valve, little axle links, pressure differential disc, the pressure reduction pressure tube, water valve, water transfer water valve core, microswitch, pressure proportion valve, the universal driving shaft micro actuator, universal driving shaft, pressure proportion valve, the universal driving shaft micro actuator, the axial line of universal driving shaft and the axial line of interstage valve are same straight line, universal driving shaft connects with valve, the air inlet of pressure proportion valve and air valve body UNICOM, the gas outlet of pressure proportion valve and interstage valve UNICOM, by manual adjustments universal driving shaft micro actuator, make spool in the pressure proportion valve along an axial line left side, right fine motion

Described pressure proportion valve comprises left pressing plate, valve body, balancing spring, spool, barrier film, right gland, thrust spring, air inlet, the gas outlet, valve body is connected on the left pressing plate, and the lower end of valve body is provided with air inlet, the gas outlet, barrier film is connected on the valve body cavity and can moves in the chamber, spool is connected on the barrier film and with the cavity that valve body and left pressing plate surround and separates into two cavitys, and these two cavitys communicate, the balancing spring two ends are connected on left pressing plate inwall and the spool left end outer wall, the thrust spring two ends are connected on spool right-hand member outer wall and the universal driving shaft micro actuator, and right gland is connected on the valve body right-hand member.

It also comprises the sealing ring that fills up between left pressing plate and valve body.

Described barrier film is for to be made by rubber.

The present invention compares the beneficial effect that is produced with prior art:

1, because the present invention is newly-increased pressure proportion valve, universal driving shaft micro actuator, a universal driving shaft in gas heater three valve assemblies, can make former three valve assemblies open combustion gas by original water flowing, Guan Shui closes to have increased on the function basis of combustion gas by the variation in water pressure of gas heater and can make ratio regulate the function of the size generation respective change of gas quantity, realizes the constant of gas heater leaving water temperature; Do not change and work as the water yield, when combustion gas air pressure changed, pressure proportion valve had the effect of stable gaseous-pressure, can not cause the variation of gas flow, thereby made the water heater effluent temperature constancy.So it can realize eliminating safe hidden trouble automatic constant-temperature effectively, improve the comfortableness of bathing, and simple in structure, low cost of manufacture.

Description of drawings: Fig. 1 is a structural representation of the present invention.

Fig. 2 is the structure enlarged drawing of pressure proportion valve 3 among Fig. 1.

The specific embodiment:, the present invention includes air valve body 1, magnetic valve 2, pressure proportion valve 3, regulating the qi flowing in the channels gas valve core 4, universal driving shaft micro actuator 5, universal driving shaft 6, interstage valve 7, valve 8, the little axle 9 of interlock, pressure differential disc 10, pressure reduction pressure tube 11, water valve 12, water transfer water valve core 13, microswitch 14 referring to accompanying drawing 1.During water heater working, the user regulates water transfer water valve core 13 and regulating the qi flowing in the channels gas valve core 4 earlier, makes the water yield of water heater and water temperature reach the tolerance that the user needs.

Referring to accompanying drawing 2, pressure proportion valve 3 comprises left pressing plate 31, valve body 32, sealing ring 33, balancing spring 34, spool 35, barrier film 36, right gland 37, thrust spring 38, air inlet 39, gas outlet 30, valve body 32 is connected on the left pressing plate 31, and the lower end of valve body 32 is provided with air inlet 39, gas outlet 30, sealing ring 33 fills up between left pressing plate 31 and valve body 32, barrier film 36 is connected on valve body 32 cavitys and can moves in the chamber, spool 35 is connected on the barrier film 36 and with the cavity that valve body 32 and left pressing plate 31 surround and separates into two cavitys, and these two cavitys can communicate, balancing spring 34 two ends are connected on left pressing plate 31 inwalls and the spool 35 left end outer walls, thrust spring 38 two ends are connected on spool 35 right-hand member outer walls and the universal driving shaft micro actuator 5, and right gland 37 is connected on valve body 32 right-hand members.

The present invention can guarantee the effluent temperature constancy that the user sets.When the tap water pipe line system water was cut down output changing, the water yield that flows through water heater just changed.If hydraulic pressure increases, effect by pressure reduction pressure tube 11, the pressure of pressure differential disc 10 left and right sides cavitys changes, left side cavity pressure reduces, and the pressure in right chamber will lose the little axle 9 of interlock and be moved to the left, and valve 8, universal driving shaft 6, universal driving shaft micro actuator 5 produce interlock, the valve port opening that loses the ratio adjusting valve 3 of pressure increases, gas flow increases, and hydraulic pressure increases the increase of flowing through the water heater water yield of generation and the increase of gas flow is the linear ratio relation, so the leaving water temperature of water heater can keep invariable.The universal driving shaft 6 that is provided with in the system, universal driving shaft micro actuator 5 are by micro-adjusting, the mutual alignment relation of little axle 9, valve 8, universal driving shaft 6, pressure proportion valve 3 links, eliminate the error of making, assembling, guarantee the linear ratio relation of the water yield and combustion gas tolerance, reach water termostat.When hydraulic pressure reduced, the little axle 9 that links oppositely moved right, otherwise system reduces the quantity delivered of combustion gas by linear scale, makes effluent temperature constancy.And the variation of combustion gas air pressure, the pressure proportion valve 3 that is provided with in the system is again a pressure maintaining valve simultaneously, can keep the gaseous-pressure of the burner of input not change with the gaseous-pressure that enters gas heater, i.e. the flow of combustion gas does not change, and it is invariable that leaving water temperature keeps.

The present invention is installed on the gas heater, when water heater uses, connect combustion gas and running water pipe, open and connect gas heater and water inlet pipe valve (or the valve on the outlet pipe), water produces by the water heater water circuit system and flows, because the pressure differential of pressure reduction pressure transmission position, make the water pressure difference of pressure differential disc 10 left and right sides two parts cavitys, left side cavity pressure is little, and right cavity pressure is big, freely is moved to the left thereby promote the little axle 9 of interlock, at first open microswitch 14, because valve has also been opened in moving to left of the little axle 9 of interlock, gas heater is opened magnetic valve 2 simultaneously, carries out the high-voltage pulse igniting, promoting universal driving shaft 6 moves to left, open pressure proportion valve 3, after the burner assembly of gas heater, high-voltage pulse are lighted a fire successfully, the gas heater operate as normal, the user regulates the tolerance size of combustion gas and regulates the size of discharge by regulating water transfer water valve core 13 by regulating regulating the qi flowing in the channels gas valve core 4, is adjusted to the water temperature that is fit to own bathing.

When user's bathing, when the pressure of tap water pipe line changed, the present invention can regulate the size of gas quantity automatically with the variation of hydraulic pressure, and the bathing water temperature that keeps the user to set is constant.Increase as tap water pressure, it is bigger at this moment to flow into the water yield that water heater need heat, and link is moved to the left for little 9, simultaneously, promote universal driving shaft 6 and be moved to the left, promote pressure proportioning valve control valve 3, the aperture of valve port is increased, and gas flow increases, thereby makes the effluent temperature constancy of water heater.When hydraulic pressure reduces, link to move right for little 9, otherwise gas quantity reduces, and keeps effluent temperature constancy equally.

And gaseous-pressure when changing pressure proportion valve 3 are a pressure maintaining valve (because its structural design has voltage stabilizing function), constant thereby (gaseous-pressure is remained unchanged) enters the gas flow of water heater burner, thereby effluent temperature constancy.

In a word, adjust the flow and temperature of water heater as the user after, no matter be the variation of hydraulic pressure or the variation of gaseous-pressure, all can guarantee the water heater effluent temperature constancy.

Claims (3)

1, a kind of automatic constant temperature valve of gas water heater, it comprises air valve body (1), magnetic valve (2), regulating the qi flowing in the channels gas valve core (4), interstage valve (7), valve (8), little axle (9) links, pressure differential disc (10), pressure reduction pressure tube (11), water valve (12), water transfer water valve core (13), microswitch (14), it is characterized in that it also comprises pressure proportion valve (3), universal driving shaft micro actuator (5), universal driving shaft (6), pressure proportion valve (3), universal driving shaft micro actuator (5), the axial line of the axial line of universal driving shaft (6) and interstage valve (7) is same straight line, universal driving shaft (6) connects with valve (8), the air inlet (39) of pressure proportion valve (3) and air valve body (1) UNICOM, the gas outlet (30) of pressure proportion valve (3) and interstage valve (7) UNICOM, by manual adjustments universal driving shaft micro actuator (5), make spool (35) in the pressure proportion valve (3) along an axial line left side, right fine motion

Described pressure proportion valve (3) comprises left pressing plate (31), valve body (32), balancing spring (34), spool (35), barrier film (36), right gland (37), thrust spring (38), air inlet (39), gas outlet (30), valve body (32) is connected on the left pressing plate (31), and the lower end of valve body (32) is provided with air inlet (39), gas outlet (30), barrier film (36) is connected on valve body (32) cavity and can moves in the chamber, spool (35) is connected in barrier film (36) cavity last and that valve body (32) and left pressing plate (31) are surrounded and separates into two cavitys, and these two cavitys communicate, balancing spring (34) two ends are connected on left pressing plate (31) inwall and spool (35) the left end outer wall, thrust spring (38) two ends are connected on spool (35) right-hand member outer wall and the universal driving shaft micro actuator (5), and right gland (37) is connected on valve body (32) right-hand member.

2, automatic constant temperature valve of gas water heater according to claim 1 is characterized in that it also comprises the sealing ring (33) that fills up between left pressing plate (31) and valve body (32).

3, automatic constant temperature valve of gas water heater according to claim 1 is characterized in that described barrier film (36) is for to be made by rubber.

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