CN2303326Y - Arrangement for controlling flow rate of combustible gas - Google Patents

Abstract

The utility model relates to a device for controlling flow rate of combustible gas, composed of a breaking body, a top contact disk, a first valve plug, a spring, a valve plug seat, a second valve plug and a mandrel. By the ways that the first valve plug provides a gas closed (closing the gas) function to a first valve port, the second valve plug provides a gas closed (closing the gas) function to a second valve port, and the tilted part of the hole wall of the valve plug seat and the mandrel form the first valve port whose size is variable, the flow rate of the combustible gas can be automatically controlled according to the size of water flow (hydraulic pressure).

Description

Gas flow control belting

The utility model relates to a kind of gas flow control device, refers to a kind of combustion gas (gas) water heater that is applied to especially, can adjust the device of gas flow according to hot water tap's aquifer yield size (or hydraulic pressure size) automatically.

The 7921404 No. four patent case in Taiwan discloses a kind of device of automatic adjusting gas flow, and it mainly is the displacement of mat one thermal actuation element control valve plug and reach according to water temperature and change the purpose of adjusting gas flow automatically.But this kind mat detecting hot water temperature changes and then the mode of control combustion gas air output, has following shortcoming:

1. water temperature must arrive the activation temperature that actuation element is set, and could control the combustion gas air output; Water temperature is not if when reaching, hydraulic pressure size no matter, and all uncontrollable gas flow, this will cause and supply with big firepower or the big flood pressure condition not appropriate gas supply state of the little firepower of supply down little hydraulic pressure state under.

2. the displacement of the bar that its valve plug linked, no guide piece is controlled its rectilinear motion, when being subjected to thermal actuation, can produce skew, cause the valve plug of termination can't control the gas-flow output exactly in the hole of valve piston base, the precarious position that can't close combustion gas is caused in hole that can't the draught excluder obturating plug.

But No. the 82208607, Taiwan or 231 No. three patent cases of the 7th GA provide a kind of device of water heater automatic constant temperature, main its by a central processing unit or microcomputer control system according to the water temperature height amount of piston displacement of fine setting operation valve, to obtain constant temperature hot water.This utilizes the mode of central processing unit, is under the environment of high temperature use at water heater, very easily causes the phenomenon that can't use when machine, the fiduciary level on tool uses; Moreover when its water temperature need reach the setting value of temperature setting device, central processing unit just can be controlled gas flow according to this, and can't give the combusting firepower of appropriateness according to size, the variation of hydraulic pressure, caused the waste of the energy.

The 8320946 No. three patent case in Taiwan then provides a kind of multistage gas flow control device, and the coaxial a plurality of valves of its mat one reach the purpose of multistage gas flow control in the following different displacements that produce of solenoid control.But it in design, and the valve of serial connection there is no the guiding design and easily causes skew, and can't accurately control combustion gas flows out, even can't seal the hole of combustion gas circulation; And complete displacement by magnetic valve controlled valve is gone up in its control, can't be by the gas flow number of hydraulic pressure size reaction supply; And firepower only is large, medium and small three kinds of firepower, can't satisfy user's diversified demand.

The purpose of this utility model, aim to provide a kind of gas flow control device, need not to set microcomputerized control circuit or solenoid valve, promote with traditional water pond, can there not to be the appropriate gas flow of section supply mode supply, allow the user obtain required water temperature according to the hydraulic pressure size.

Another purpose of the present utility model further provides a kind of by stop-motion body, apical grafting dish, first valve plug, spring, valve piston base, second valve plug and gas flow control device that axle constituted, can be according to discharge (hydraulic pressure) size control gas flow automatically.

Above-mentioned purpose of the present utility model is achieved in that a kind of gas flow control device, and it comprises:

Stop-motion body has through hole;

The apical grafting dish has through hole, last top-joining part and following top-joining part;

First valve plug has through hole;

Spring, its upper end is the following top-joining part that page or leaf is connected on above-mentioned apical grafting dish;

Valve piston base has through hole, top-joining part, socket part and flange, and its page portion of connecing is the lower end that apical grafting above-mentioned spring;

Second valve plug has through hole, and the set through hole of mat is socketed in the socket part of above-mentioned valve piston base; And,

Axle, it is the valve piston base that is wearing above-mentioned sheathed second valve plug in regular turn, spring, first valve plug, apical grafting dish and stop-motion body, have stop device and prevent that the assembly that worn from deviating from from the axle below, and have the location division and locate first valve plug and be positioned at the apical grafting dish that connects airtight with this first valve plug on first valve plug, and having a retainer is locating and is being positioned at the stop-motion body that connects airtight with the apical grafting dish on the apical grafting dish, prevent that the assembly that worn from deviating from from the axle top, above-mentioned axle is to be formed with a rake of inwardly bringing together to be connected to stop device below first valve plug of location, and axle is provided with a cover access slot that Open Side Down, and the hole wall of the rake of above-mentioned axle and the through hole of valve piston base defines a valve opening by the keying of first valve plug.

The utility model mainly is that mat first valve plug provides first valve opening and second valve plug that (the closing combustion gas) function of holding one's breath of second valve opening is provided, and the rake of the hole wall of valve piston base and axle defines first valve opening that can change size, makes according to discharge (hydraulic pressure) size and controls gas flow automatically.

The utility model axle is passed with coaxial manner by axostylus axostyle, reaches valve piston base and is also promoted with coaxial manner by axle, so can not produce skew on moving, can guarantee the unlatching of combustion gas or the accuracy of closing; And, reach the control of stepless gas flow according to the setting of rake to control first valve opening size, and the little hydraulic pressure of acquisition provides promptly little firepower, big hydraulic pressure that the appropriate gas flow of big firepower promptly is provided; Moreover structure is simplified, and is easy to assembly, and cost is low, need not the micro computer control system, not influenced by high-temperature work environment, has value on the industry; Matching is good, and known gas heater main body need not major change, can install.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Fig. 1 is the decomposing section of the utility model gas flow control device.

Fig. 2 is Fig. 1 the utility model combination section.

Fig. 3 is the backplan after the utility model combination, and wherein X-X line cross-section structure is Fig. 2.

Fig. 4 is the sectional structure chart that the utility model is incorporated into the water heater main body, and expresses the pressure differential disc of main body institute combination and controlling the water pond of microswitch, and all members are action all.

Fig. 5 is Fig. 4 action diagram, expresses the utility model first valve opening and activated by the little hydraulic pressure of water pond and the control combustion gas is flowed out in a small amount, and the pressure differential disc action, microswitch also breaks away from water pond control and is the state of turning circuit.

Fig. 6 is that expression water pond hydraulic pressure becomes the roughly cumulative state of gas flow than Fig. 5 for cumulative shown the utility model first valve opening.

Fig. 7 is the state that expression water pond hydraulic pressure increases for maximum gas flow of opening for cumulative shown the utility model first valve opening than Fig. 6 again.

Fig. 8 is when representing that water pond hydraulic pressure increases to maximum than Fig. 7, and shown the utility model first valve opening is that maximum unlatching and the utility model second valve plug break away from control to second valve opening, causes the state that gas flow is a full dose.

Please refer to Fig. 1, this figure shows that the utility model gas flow control device A comprises: stop-motion body 1, apical grafting dish 2, first valve plug 3, spring 4, valve piston base 5, second valve plug 6 and axle 7, wherein: stop-motion body 1, constitute ring-type, central authorities form through hole 11, and are provided with most retaining pawls 10 and stretch to through hole 11; Apical grafting dish 2, central authorities form through hole 20, have last top-joining part 21 and reach top-joining part 22 down; First valve plug 3, central authorities form through hole 30, the downward tab-like camber of lower surface portion 31; Spring 4, shape in the shape of a spiral; Valve piston base 5, central authorities form through hole 50, have top-joining part 51, socket part 52 and flange 53, and above-mentioned through hole 50 bottoms also form the bigger expansion section of diameter 54; Second valve plug 6, central authorities form through hole 60; Axle 7, the upper end has the retainer 70 of at least one indenture, be linked to above-mentioned retainer 70 belows and be in regular turn first socket part 71, first shoulder 72, diameter and be the second big socket part 73, second shoulder 74, rake 75, axle wall 76 and a pair of both sides and the outward extending stop tab 78 of being configured in oblique, in the above-mentioned axle wall 76 and be provided with a cover access slot 77 that Open Side Down than first socket part 71.

In combination, the set through hole 60 of aforementioned second valve plug, 6 mats is socketed in the socket part 52 of valve piston base 5, axle 7 is set in the through hole 50 of valve piston base 5 from lower to upper, then, be inserted in spring 4 and make the top-joining part 51 of spring 4 lower end apical graftings at valve piston base 5, then, the set through hole 30 of first valve plug, 3 mats can be passed and be socketed in second socket part 73 by axle 7 and stay on second shoulder 74, thereafter, apical grafting dish 2 is subjected to axle 7 to pass and be socketed in first socket part 71 with set through hole 20 and stays on first shoulder 72, the following apical grafting face 22 of this apical grafting dish 2 and the upper end that apical grafting aforementioned spring 4, at last that stop-motion body 1 mat is set through hole 11 is inserted by axle 7 tops, the set retaining pawl 11 of stop-motion body 1 and mat embeds retainer 70 until stop-motion body 1, the apical grafting dish 2 and first valve plug 3 are each other closely by pasting, finish the utility model gas flow control device A after the combination, as shown in Figure 2.In assembled state shown in Figure 2, the elastic reaction of mat spring 4, the flange 53 of valve piston base 5 is the stop tab 78 by pasting axle 7,55 of the hole walls of the axle wall 76 of axle 7 and the through hole 50 of valve piston base 5 define the first valve opening A1, setting through stop-motion body 1 and stop tab 78, prevent that other assemblies from emerging in axle 7, only stop-motion body 1 and retainer 70 also can divide by nut and threaded portion and constitute, and the utility model will not strict restriction.Can see that by Fig. 3 stop tab 78 is not to cover the first valve opening A1 fully, the first valve opening A1 answers mat expansion section 54 and can increase the combustion gas influx.

As shown in Figure 4, the utility model gas flow control device A is located in the main body 90, the 3rd valve opening 95, escape pipe 96, the spring 97 of the pressure differential disc 86 of the water pond 80 of the included draft tube 91 of main body 90, second valve opening 92, the first interlocking end 93, the first interlocking end, 93 interlockings, the second interlocking end 94, the second interlocking end, 94 interlockings, valve plug 87 controls of pressure difference dish 86 and be located at the 3rd valve opening 95 and 96 gas flow adjuster bars shown in dotted line of escape pipe all belongs to known configuration; And the push rod 81 of water pond 80 (referring to shown in Figure 5), be attached at the pushing block 82 of push rod 81 upper ends, the control lever 83 that is laterally linking pushing block 82, the microswitch MS (being used to open and close electronic ignition, inductive control circuit) of controlled bar 83 control depression bars 40 and be subjected to pushing block control displacement and be installed in the axostylus axostyle 84 of main body 90 also all belongs to known configuration.The utility model gas flow control device A, the last top-joining part 21 of its apical grafting dish 2 is the above-mentioned spring 97 of apical grafting, 6 of its second valve plugs are used to control aforementioned second valve opening 92,77 heads 85 by axostylus axostyle 84 of its cover access slot are pegged graft, and its stop tab 78 is separated into ultimate range with the flange 53 of valve piston base 5.

State shown in Figure 4 is the stationary state of not moving, promptly, because of the hot water tap is not opened, the thrust that no current activate in the water pond 80, pushing block 82 is in low level, control lever 83 thereby compressing depression bar 40 are downward, make the pin 41 of microswitch MS be connected to off state (claiming the setting of B contact type) with pin 43, axostylus axostyle 84 is place, position low level also, itself and pushing block 82 are separated with the gap, because of spring 97 elasticity coefficient greater than spring 4, the spring 4 of the utility model gas flow control device A promptly is compressed storage elastic force, and because of the effect of spring 97, make first valve plug 3 be close to the upper surface of valve piston base 5, make the first valve opening A1 communicate with the space that spring 97 is set and be closed state, second valve plug 6 also is subjected to spring 97 effects and is closing second valve opening 92, and axle 7 is subjected to the power of spring 97 and is positioned at low level, at this moment, second valve opening 92 and the first valve opening A1 all are closed, and the combustion gas in the draft tube 91 can't enter in the main body 90, and pressure differential disc 86 is not also also sealing the 3rd valve opening 95 because of electronic circuit operates (MS is OFF) its valve plug 87.

As shown in Figure 5, when the hot water tap in the early stage open position (with the single-gun-type water swivel, handle is in the opening in centre position) or during the abnormal little hydraulic pressure state of pipeline hydraulic pressure, can provide little firepower by the utility model, waste energy and scald situation to avoid too high generation of water temperature.Promptly, under the little hydraulic pressure state of Fig. 5, move and activate in the lump pushing block 82 and control lever 83 on the push rod 81 of water pond 80, when apical grafting is crossed the gap of preexist to axostylus axostyle 84, the depression bar 40 of microswitch MS promptly is released, and its pin 41,42 conductings become ON (connection), electronic circuit begins to produce the running of effluve, thereafter after axostylus axostyle 84 is passed by pushing block 82 trace, axle 7 is also passed, and causes spring 97 oppressed, and spring 4 then trace restores, open moving of axle 7, impel first valve plug 3 to break away from the upper surface of valve piston base 5, open the first valve opening A1, combustion gas is promptly entered in the main body 90 through the first valve opening A1 by draft tube 91, and because of pressure differential disc 86 in advance action cause its valve plug 87 and open the 3rd valve opening 95 to produce female fire, combustion gas is multiple to be flowed to escape pipe 96 by the 3rd valve opening 95 and then flows out and accept above-mentioned female fire and ignite main fiery.Because of rake 75 upper parts of axle 7 at the first valve opening A1 upper limb, control the first valve opening A1 opening for minimum, thereby under little hydraulic pressure state, the promptly according to this little hydraulic pressure of the utility model is regulated the combustion gas of supply low discharge automatically.First valve plug, 3 lower surfaces form the purpose of curved portions 31, are to provide the minimum surface of contact when closing, and make to be beneficial to break away to close state and can be because of tightly not sticking together with valve piston base 5 upper surfaces for a long time under spring 97 pressure effects.

When hydraulic pressure is a bit larger tham state shown in Figure 5, as Fig. 6, push rod 81 continues up to move and the increase shift motion, at this moment, the past top offset of axle 7 equivalent, and pressuring spring 97 again, spring 4 is also gradually replied but its acting force still imposes on valve piston base 5, second valve 92 is still sealed by second valve plug 6, axle 7 is toward top offsets, also causes the different dip plane of rake 75 near the first valve opening A1 upper limb, and makes the first valve opening A1 upper limb degree of opening cumulative and increase the gas-flow output, in view of the above, increase the gas-flow output automatically according to the increase of hydraulic pressure.

That shown in Figure 7 is that hydraulic pressure is greater than state shown in Figure 6, among Fig. 7, axle 7 before top offset to the flange 53 of stop tab 78 by pasting valve piston base 5, the first valve opening A1 is maximum opening (is axle wall 76 therein), and acquisition is big gas flow than Fig. 6 gas flow, at this moment, spring 97 is again oppressed state and the utility model gas flow control device A is not produced acting force that compared to Fig. 6 the utility model promptly reverts back to state shown in the diagram (being same as Fig. 2) by spring 4.

Fig. 8 represents that hydraulic pressure is big maximum hydraulic pressure state than Fig. 7 and obtains maximum gas-flow output, compared to Fig. 7, as can be known, among Fig. 8, all movable bodys by 81 jackings of push rod of water pond 80 all rise to most significant digit and move the place, promptly, spring 97 is compressed into can the compressed limit, the axle 7 that rises to its most significant digit makes second valve plug 6 open second valve opening 92 because of stop tab 78 acts on valve piston base 5, and combustion gas is flowed into by the first valve opening A1 and second valve opening 92 of standard-sized sheet, thereby obtains maximum gas-flow output.

According to above-mentioned explanation of the present utility model, as can be known: the utility model axle is passed with coaxial manner by axostylus axostyle, reaches valve piston base and is also promoted with coaxial manner by axle, so can not produce skew on moving, guarantees the unlatching of combustion gas or the accuracy of closing; And, reach the control of stepless gas flow according to the setting of rake to control first valve opening size, and the little hydraulic pressure of acquisition provides promptly little firepower, big hydraulic pressure that the appropriate gas flow of big firepower promptly is provided; Moreover structure is simplified, and is easy to assembly, and cost is low, need not the micro computer control system, not influenced by high-temperature work environment, has value on the industry; Matching is good, and known gas heater main body need not major change, can install, and for example notification number 122244 a cases in Taiwan only need to make microswitch into the B contact type and get final product, and other designs in similar field also can be used the utility model.

Claims (4)

1, a kind of gas flow control device is characterized in that comprising:

Stop-motion body has through hole;

The apical grafting dish has through hole, the last page or leaf portion of connecing and following top-joining part;

First valve plug has through hole;

Spring, its upper end is the following top-joining part of apical grafting at above-mentioned apical grafting dish;

Valve piston base has through hole, top-joining part, socket part and flange, and its top-joining part is the lower end that apical grafting above-mentioned spring;

Second valve plug has through hole, and the set through hole of mat is socketed in the socket part of above-mentioned valve piston base; And,

Axle, it is the valve piston base that is wearing above-mentioned sheathed second valve plug in regular turn, spring, first valve plug, apical grafting dish and stop-motion body, have stop device and prevent that the assembly that worn from deviating from from the axle below, and have the location division and locate first valve plug and be positioned at the apical grafting dish that connects airtight with this first valve plug on first valve plug, and having a retainer is locating and is being positioned at the stop-motion body that connects airtight with the apical grafting dish on the apical grafting dish, prevent that the assembly that worn from deviating from from the axle top, above-mentioned axle is to be formed with a rake of inwardly bringing together to be connected to stop device below first valve plug of location, and axle is provided with a cover access slot that Open Side Down, and the hole wall of the rake of above-mentioned axle and the through hole of valve piston base defines a valve opening by the keying of first valve plug.

2, gas flow control device as claimed in claim 1, it is characterized in that: described rake below is to be connected to stop device through a vertical axle wall, and the hole wall of the through hole of above-mentioned rake and valve piston base common with the axle wall that is connected defines a valve opening by the keying of first valve plug.

3, gas flow control device as claimed in claim 1 or 2 is characterized in that: the first valve plug lower surface has outstanding curved portions.

4, gas flow control device as claimed in claim 1 or 2 is characterized in that: the through hole below of valve piston base is to constitute an expansion section.

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