AU4883202A - A method of controlling gas supply and opening/closing gas supply with gas regulation function - Google Patents

Description

P/00/011 Regulation 3.2

AUSTRALIA

Patents Act 1990

ORIGINAL

COMPLETE SPECIFICATION STANDARD PATENT Invention Title: "A METHOD OF CONTROLLING GAS SUPPLY AND OPENING/CLOSING GAS SUPPLY WITH GAS REGULATION FUNCTION" The following statement is a full description of this invention, including the best method of performing it known to us: TITLE: A METHOD OF CONTROLLING GAS SUPPLYAND OPENING/CLOSING GAS SUPPLY WITH GAS REGULATION

FUNCTION

BACKGROUND OF THE INVENTION 1. FIELD OF THE INVENTION This invention is related to a method of controlling gas supply and opening and closing gas supply with a regulation function, and relates in particular to the small power consumption required for the opening and closing of a diaphragm because of the adopted indirect opening capability of this method.

2. DESCRIPTION OF THE PRIORART Generally, there are two kinds of conventional gas heaters. One kind of conventional gas heater is operated by hand mechanically, and a gas burner is ignited by pressing or turning and holding a knob until the thermocouple or thermopile in the gas burner generates enough steady current to hold the plunger and keep the valve in open status. This operation for igniting the gas burner always requires the user to hold the knob for a certain period of time, which is inconvenient for the user. The other kind of conventional gas heater is operated by an electronic function. After pressing the "ON" button, the gas valve, igniter and sensor for recognizing the flame are operated automatically by a micro-processor or some logical circuit connections. But this kind of device, like the gas valve, consumes more power and requires AC power such as AC 110V or AC 240V, thereby creating higher costs and extra payments for installation, and requiring more parts to be designed for the products and to maintain them.

Therefore, it is an object of the present invention to provide a method for controlling the gas supply to a gas burner, which can obviate and mitigate the above-mentioned drawbacks.

SUMMARY OF TIHE INVENTION This invention is related to a method for controlling gas supply and opening and closing gas supply with a regulation function, and relates in particular to the small power consumption required for the opening and closing of a diaphragm because of the adopted indirect opening capability of this method.

It is the primary object of the present invention to provide a method for controlling gas supply and the opening and closing of the main burner with a regulation function which operates with ultra-low power consumption by using a small capacity battery for a long time while still maintaining and automatically operating all functions, and to easily install the products required for this function and to reduce the cost of designing said products.

The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.

Many other advantages and features of the present invention will become 4 manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.

BRIEF DESCRIPTION OF THE DRAWINGS SFIG. 1 and FIG. 2show perspective views to understand the structure and important parts for controlling gas supply according to the present invention.

FIG3 shows the stand-by condition to understand the working principle of the method for controlling gas supply and the opening and closing of the gas supply.

FIG 4 shows the first step of the working principle of the method for controlling gas supply when the first solenoid valve is opened.

FIG 5 shows the second step of working principle of the method for controlling gas supply when the first diaphragm is opened.

FIG 6 shows the third step of the working principle of the method for controlling gas supply when the second solenoid valve is opened.

FIG 7 shows the fourth step of the working principle of the method for controlling gas supply when the second diaphragm is opened.

FIG 8 shows the fifth step of the working principle of the method for controlling gas supply when the stem with regulation diaphragm is opened by the servo motor assembly.

FIG 9 shows the final step of the working principle of the method for opening and closing gas supply when the first solenoid and diaphragm is opened, the second solenoid and diaphragm is opened and the regulation 6 diaphragm is opened by the servo motor assembly.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT For the purpose of promoting an understanding of the principles of this invention, reference will now be made to the embodiment illustrated in the drawings. Specific language will be used to describe same. It will nevertheless, be understood that no limitation of the scope of the invention is thereby intended. Such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated herein being contemplated as would normally occur to one skilled in the art to which the invention relates.

FIG 1 shows the method for controlling gas supply by a servo motor, reduction gear box and gear with regulation function.

FIG 2 shows the method for opening and closing gas supply with a regulation function.

FIG 3 shows the stand-by condition to understand the working principle of this method for controlling gas supply and opening and closing the gas supply.

The solenoid valve assembly consists of valves S 10O and S20, solenoid valve bodies S 11 and S21, ten-rminals of positive and negative poles S12 and S22, wire winding assemblies S13 and S23, type cores S140 and S240, type cores S141 and S241, springs S 15 and S25, and brackets S16 and S26 of the valves. The solenoid valve assembly is positioned in chamber CH2 and the chamber CH5. The solenoid valve assembly normally closes in stand-by condition and seals up between chamber CH2 and chamber CH4 or chamber CH5 and chamber CH7.

The diaphragm assembly comprises diaphragms D10 and D20, springs DlI and D21 and diaphragm plates D13 or D23. The diaphragm assembly is combined into the chamber CH3 or chamber CH6. At stand-by condition, those diaphragms seal up to avoid the gas flowing'from chamber CH1 to chamber CH4 or from chamber CH4 to chamber CH9 (the outlet), because the pressure is equalized between chamber CH1 and chamber CH3 or chamber CH4 and chamber CH6. Additionally, the force of the springs D12 and D22 pushes the diaphragms D13 and D23 to close.

Force of spring D12 pressure in chamber CH3 pressure in chamber CH1 Force of spring D22 pressure in chamber CH6 pressure in chamber CH4 The regulation assembly comprises of an adjust rotator RI, a spring R2, a diaphragm R3, a plate of a diaphragm R4, and a stem R5. At stand-by condition, the stem R5 seals up between chamber CH7 and chamber CH8 to avoid gas flowing between the two chambers. At the same time, the adjust rotator R1 is located at its highest position by the servo motor assembly.

The servo motor assembly consists of wire SM 1, a servo motor SM2, speed reduction gear SM3, and a rotator SM4.

FIG4 shows the first step of the working principle of the concept for controlling gas supply when the first solenoid valve is opened. When the voltage is supplied to solenoid terminals S12, type core S140 and'T' type core S141 each produce a magnetic field which come into contact with each other. When this occurs, the solenoid valve S1 will 6pen. At this moment, the gas flows through chamber CH1, chamber CH2, chamber CH4 and the outlet of the pilot injector.

shows the second step of the working principle of the method for controlling gas supply when the first diaphragm D 10 is opened.

In the FIG4 condition, the pressure in the chamber CH3 will be lowering, because the gas flowing through chamber CH1 and chamber CH4 have the effect of suctioning or reducing the pressure in chamber CH3. Additionally, the total diameter of chamber CH1 is smaller then the total diameter of chamber CH2 and chamber CH3. The effect of this smaller diameter of chamber 1 is that it helps to gain more suction pressure in chamber CH3, and therefore the diaphragm will no longer be balanced, and will open. Thus, Force of spring D12 pressure in chamber CH3 suction pressure in chamber CH3< pressure in chamber CH1 At this moment, the pressure is equalized between chamber CH4 and chamber CH6. Additionally, the force of the spring D22 pushes the diaphragm D23 to close.

FIG6 shows the third step of the working principle of the method for controlling gas supply when the second solenoid valve is opened. When the voltage is supplied to the solenoid terminal S22, type core S240 and T' type core S241 each produce a magnetic field which come into contact with each other. When this occurs, the solenoid valve S2 will open. At this moment, the gas flows through chamber CH4, chamber CH5, chamber CH7, chamber CH8 and the outlet of the main burner.

FIG7 shows the fourth step of the working principle of the method for controlling gas supply when the second diaphragm is opened. In the FIG6 condition, the pressure in the chamber CH6 will be lowering, because gas flowing through chamber CH4 and chamber CH5 have the effect of suctioning or reducing the pressure in chamber CH6. Additionally, the total diameter of chamber CH4 is smaller than the total diameter of chamber and chamber CH6, thereby gaining more suction pressure in chamber CH6.

Therefore, the diaphragm will no longer be balanced, and will open. Thus, Force of spring D22 pressure in chamber CH6 suction pressure in chamber CH6 pressure in chamber CH4 FIG 8 is shown the fifth step of the working principle of the method for controlling gas supply when the stem R5 with regulation diaphragm R3 is opened more than FIG7 by the servo motor assembly.

When the stem R5 is forced down by the servo motor assembly, the suction pressure in chamber CH6 will be increased, aind therefore the diaphragm will open further and the volume of gas flowing will also be increased. The volume of gas flowing will controlled by the space of chamber CH7 by the stem R5 and the servo motor assembly. The process is as follows: Control of the stem position (up/down) suction pressure in chamber CH6 (decrease/increase) position of diaphragm D20 (more closing/more opening) volume of gas flowing (less/more) FIG9 shows the final step of the working principle of the method for opening and closing gas supply. When the first solenoid S 10 and diaphragm are opened, the second solenoid S20 and the diaphragm D20 are opened and the regulation diaphragm R3 is kept open by adjusting the regulation.

The difference between the method of controlling the gas supply and opening and closing the gas supply is in the using an adjustor of regulation instead of the servo motor assembly to fix the regulation level. Also, the outlet pressure of the gas main can be changed by the position of the regulation adjustor.

It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.

While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.

Claims (2)

1. A solenoid valve assembly comprising housing, a diaphragm assembly, said housing being formed with a first chamber, a second chamber, a third chamber, a fourth chamber, a fifth chamber, a sixth chamber, a seventh chamber, an eighth chamber and a ninth chamber, a first and second solenoid valves, a first and second valve bodies, a first and second terminals of positive and negative poles, a first and second wire winding assemblies, a first and second typ6 cores, a first and second type cores, springs, and brackets of said first and second valves, wherein said first and second solenoid valves are positioned in said second chamber and said fifth chamber of said housing, said solenoid valve assembly normally closes in stand-by condition and seals up between said second chamber and said fourth chamber or said fifth chamber and said seventh chamber, said diaphragm assembly comprises diaphragms, springs and diaphragm plates, said diaphragm assembly is arranged into said third chamber and said sixth chamber, said diaphragms seal up to avoid gas flowing from said first chamber to said fourth chamber, or from said fourth chamber to said ninth chamber, pressure is equalized between said first chamber 1 and said third chamber, or said fourth chamber and said sixth chamber, forces of said springs pushes said diaphragm to close.

2. The solenoid valve assembly as claimed in claim 1, further comprising a regulation assembly which comprises an adjust rotator, a spring, a diaphragm, a plate of diaphragm, and a stem, wherein said stem seals up between said seventh chamber and said eighth chamber to avoid gas flowing from said seventh chamber to saideighth chamber, said adjust rotator is located at highest position by a servo motor assembly. DATED this eighteenth day of June 2002. GRAND HALL ENTERPRISE C0., LTD By its Patent Attorneys FISHER ADAMS KELLY.