CN2546808Y - Gas combustion controller for water heater - Google Patents

Abstract

Disclosed is a gas control apparatus of a water heater, which is mainly composed of a valve seat and two normally-closed valves; wherein, a pore channel and a passage are arranged in the valve seat; two valve chambers to communicate with the passage are arranged in the valve seat so that the two normally-closed valves can be respectively arranged in the two valve chambers; furthermore, a parent nozzle and a plurality of main nozzles to communicate with the passage are arranged on the valve seat; each nozzle respectively corresponds to a venturi tube of a burner; the water outlet of the first normally-closed valve is communicated with the parent nozzle; the water outlet of the second normally-closed valve is communicated with the passage. When the hot water tap is opened to start the water heater, the first normally-closed valve is driven to form a valve-open position so that the gas can be jetted from the parent nozzle into the venturi tube, and then the gas can be ignited by spark generated by the discharging of an ignition bolt. Once a flame detector detects that the parent fire is ignited, the ignition bolt will stop discharging, and at the same time the second normally-closed valve will be opened so that the gas released from each main nozzle can flow into each corresponding venturi tube and then is ignited by the parent fire to form the main fire for heating requirement.

Description

The water heater controller for gas

Technical field

The utility model relates to a kind of control device of the water heater that thermal source is arranged, particularly water heater.

Technical background

Figure 1 shows that the plane of domestic gas-fired water heater, this water heater 9 is intended to supply with the hot water that pouring (washing one's hair) is bathed needs usefulness, its operating principle system utilizes the cooperation of a water pond 5 and pressure differential disc 7, keying with the control water heater, wherein the vertical section of water pond 5 mainly is disposed at Venturi tube 54, in the circulation flow path 53 of water pond 5 by one first disk body 50, the rubber diaphragm 52, of one second disk body 51, between two disk bodies and is linked to tappet 55 on the diaphragm 52 as shown in Figure 2; And one be incorporated into tappet 55 upper ends, and remained in by compression spring 56 and to close valve position, forms to open and close portal 57 valve plug 58 of gas-flow.

Shown in Figure 3 then is the profilograph of pressure differential disc 7, and it is mainly by one first dish seat 70; One second dish seat 71; A normally open valve 72 and a normally close valve 73 that is held in the first dish seat 70; One between two rubber diaphragms 74 that coil between the seat; One by diaphragm 74 and the first dish seat, 70 first balancing gate pits 75 that define; One by diaphragm 74 and the second dish seat, 71 second balancing gate pits 76 that define; One is linked on the diaphragm 74 and is held in the guide rods 77 of the second dish seat, 71 motions; One is incorporated on the guide rod 77, to open and close the valve 78 of gas-flow to the path of burner 90; And a snare in guide rod 77 and two ends each be held in compression spring 79 compositions of the valve 78 and the second dish seat 71.Balancing gate pit, mat rubber diaphragm 74 2 limit 75 and 76 pressure differential be during greater than the elastic force of spring 79, and compressing diaphragm 74 displacements and push valve 78 (being that start becomes to open valve position) open make gas-flow to burner 90; When the pressure balance of balancing gate pit, rubber diaphragm 74 2 limit 75 and 76, the elastic force of spring 79 will promote valve 78 involutions and close valve position, stops air feed.Because pressure differential disc 7 and above-mentioned water pond 5 are located by prior art, further specify real unnecessary.

Start principle as for above-mentioned water heater is, when turning on the hot water tap, as shown in Figure 4, part water can flow into first hydroecium 60 from hole 59, most water then flows out through Venturi tube 54, when current will cause negative pressure during through the neck 64 of Venturi tube 54, and with the water of second hydroecium 61 from through hole 62 and 63 sucking-offs, make first hydroecium 60 and second hydroecium 61 produce pressure differential, thereby promotion diaphragm 52 displacements, and valve plug 58 band making the combustion gas circulation from tap hole 57 by tappet 55, the inflow entrance 80 from pressure differential disc 7 enters second balancing gate pit 76 again, and flows into first balancing gate pit 75 via path 81, nationality is incorporated into the actuator lever 92 shake-up microswitches 91 (Fig. 1) of tappet 55 simultaneously, be connected to the power supply of ignition 95 with connection, make ignition plug 96 discharge generation sparks, normally close valve 73 starts simultaneously become to open valve position, be that its valve plug 84 is opened (Fig. 5), make the 75 interior combustion gas of first balancing gate pit can pass through normally close valve 73, and flow to nozzle 97, become female fire by this spark initiation by the flow export 82 of pressure differential disc 7.

As shown in Figure 6, in case flame detecting device 98 detects after female fire lights, igniting fastens 96 will stop discharge, and connection is connected to the power supply of normally open valve 72, make its start become to close valve position, be its valve plug 85 sealings, stop combustion gas to flow into first balancing gate pit 75, so combustion gas is under the situation of only export but no import in first balancing gate pit 75, cause its pressure less than gaseous-pressures in second balancing gate pit 76, make rubber diaphragm 74, leave opening 83 (Fig. 6) and make combustion gas flow to burner 90 via opening 83 and promote valve 78 towards the 75 direction displacements of first balancing gate pit, being ignited by female fire becomes main fire, the usefulness of supply heating.

As above-mentioned, to drench the usefulness that (washing one's hair) bathe be purpose because water heater is mainly to make the hot water supply, so the higher hot water ability (kcal/h) that goes out need be arranged, relative energy resource consumption is also high.Yet, the hot water that water heater is supplied with is except that needing of (washing one's hair) bath drenched in confession, generally also can be used to wash vegetables and fruits and tableware, and when using the hot wash implements, basically, for go out the hot water ability require relatively low, as with the relatively large pot-type boiler supply of type washing hot water, quite waste one's talents, the meaning of breaking a fly upon a wheel increases on foot and wastes energy.Particularly control the significant components-pressure differential disc of large-scale water heater, the configuration complexity, number of components is more, and processing assembling inconvenience makes water heater make very efficiently and to assemble under most economical situation; And longer relatively via the time that the burning flow process combustion gas of pressure differential disc control is ignited, being difficult to reach is thermal effect.

Summary of the invention

The purpose of this utility model is promptly addressing the above problem and shortcoming, and a kind of controller for gas that need not pressure differential disc is provided, to be applicable to small water heater, this control device is simple in structure, number of components is less, the processing assembling is convenient, makes water heater make very efficiently and to assemble under most economical situation, and significantly reduces production costs, additional income, shorten combustion gas ignitor firing time simultaneously, really reaching is thermal effect, and no cold water discharge is reduced.

The purpose of this utility model is achieved in that

A kind of water heater controller for gas is characterized in that, includes:

One valve seat has a duct and passage, and have two with first and second valve chambers of hole link, wherein the duct has an inflow entrance, further comprise a female nozzle on this valve seat, and main burner a plurality of and channel connection, each nozzle is a Venturi tube of corresponding burner respectively;

One first normally close valve is installed on first valve chamber, and its flow export is communicated with female nozzle, flows to the path of female nozzle from the duct with the switching combustion gas; And

One second normally close valve is installed on second valve chamber, and its flow export and channel connection flow to the path of passage to open and close combustion gas from the duct.

This valve seat further comprise one with the pilot hole of hole link, for flow control valve is installed.

Compared with prior art, the utlity model has following advantage:

Because water heater controller for gas of the present utility model, mainly form by a valve seat and two normally close valves, wherein valve seat has a duct and passage, and have two with the valve chamber of hole link, so that a normally close valve to be installed respectively, further comprise the main burner of a female nozzle and plural number and channel connection on this valve seat, each nozzle is a Venturi tube of corresponding burner respectively, the flow export of first normally close valve is communicated with female nozzle, the flow export of second normally close valve and channel connection; When turning on the hot water tap when starting water heater, first normally close valve promptly moves and becomes out valve position, make combustion gas spray to corresponding Venturi tube from female nozzle, become female fire by the spark initiation of ignition plug discharge generation, in case the flame detecting device detects after female fire lights, ignition plug just stops discharge, second normally close valve is opened simultaneously, promptly disengage combustion gas to each corresponding Venturi tube from each main burner, being ignited by female fire becomes main fire, and the supply heating needs to use.This control device is simple in structure, number of components is less, the processing assembling is convenient, make water heater under most economical situation, make very efficiently and to assemble, and significantly reduce production costs, additional income shortens combustion gas ignitor firing time simultaneously, really reaching is thermal effect, and no cold water discharge is reduced.

Description of drawings

Fig. 1 is a plane of commonly using gas heater, and wherein solid arrow is represented the fuel gas flow direction, empty arrow table water (flow) direction, and the following drawings is identical;

Fig. 2 is a water pond profilograph of commonly using water heater, shows state when water pond does not move;

Fig. 3 is a pressure differential disc profilograph of commonly using water heater, shows state when pressure differential disc does not move;

Fig. 4 is the profile that is similar to Fig. 2, state when showing the water pond start;

Fig. 5 is the profile that is similar to Fig. 3, shows that the normally close valve start of pressure differential disc becomes to open the valve position state;

Fig. 6 is the subsequent action profile of Fig. 5, and the demonstration valve moves because of diaphragm two limit pressure differentials and becomes out the valve position state;

The water heater controller for gas exploded view of Fig. 7 for forming according to the utility model;

Fig. 8 makes the profile of change slightly for the overview diagram effect for the utility model;

Fig. 9 is used for the plane of gas heater for the utility model dress;

Figure 10 is the profile that is similar to Fig. 8, shows that the first normally close valve start becomes to open the valve position state;

Figure 11 is the subsequent action profile of Figure 10, shows that the second normally close valve start becomes to open the valve position state.The piece number contrast:

1 valve seat, 2 first normally close valves, 3 second normally close valves

4 water heaters, 5 water ponds, 7 pressure differential discs

9 water heaters, 10 control table apparatus, 11 ducts

12 passages, 13 joints, 14 first valve chambers

15 second valve chambers, 17 female nozzle 18 main burners

19 pilot holes, 21 flow exports, 22 valve plugs

31 flow exports, 32 valve plugs, 45 burners

46 Venturi tubes, 50 first disk bodies, 51 second disk bodies

52 diaphragms, 53 circulation flow paths, 54 Venturi tubes

55 tappets, 56 compression springs, 57 tap holes

58 valve plugs, 59 holes, 60 first hydroeciums

61 second hydroeciums, 62 through holes, 63 through holes

64 necks, 70 first dish seats, 71 second dish seats

72 normally open valves, 73 normally close valves, 74 diaphragms

75 first balancing gate pits, 76 second balancing gate pits, 77 guide rods

78 valves, 79 compression springs, 80 inflow entrances

81 paths, 82 flow exports, 83 openings

84 valve plugs, 85 valve plugs, 90 burners

91 microswitches, 92 actuator lever, 95 electronics firearms

96 ignition plugs, 97 nozzles, 98 flame detecting devices

99 water ponds

The specific embodiment

The utility model is reached the embodiment explanation of the technological means of above-mentioned purpose with reference to following conjunction with figs..

As shown in Figures 7 and 8, specific implementation water heater controller for gas 10 of the present utility model comprises a valve seat 1, this valve seat 1 has a duct 11 and passage 12, the inflow entrance in duct 11 forms a joint 13, be connected with gas flow outlet with water pond 91, and have a pilot hole 19 to be communicated with duct 11, for installing flow control valve (figure does not show) additional, so that the gas flow in the ostium road 11 is given throttling.Also have two first valve chamber 14 that is communicated with duct 11 and second valve chambers 15 on the valve seat 1, so that first normally open valve 2 and second normally close valve 3 to be installed respectively.In addition, comprise plural screwed hole on the valve seat 1, for being spirally connected a female nozzle 17 and a plural main burner 18, each nozzle 17 and 18 is a Venturi tube 46 (Fig. 9) of corresponding burner 45 respectively.The flow export 21 of described first normally close valve 2 is communicated with female nozzle 17, with open and close combustion gas from the duct 11 paths that flow to female nozzle 17; The flow export 31 of second normally open valve 3 is communicated with passage 12, and this passage 12 is communicated with main burner 18 again, with open and close combustion gas from the duct 11 paths that flow to passage 12.In the embodiment of accompanying drawing, the Venturi tube 46 of burner 45 central authorities is as female ignition combustor, female fire that promptly ignites need with combustion gas disengage from female nozzle 17 after, central Venturi tube 46 ejections by burner 45, burner 45 other Venturi tubes then are responsible for disengaging the required combustion gas of main fire of igniting, and this design can be omitted and be carried the pipeline of lighting female fiery required combustion gas, thereby simplify the water heater structure, in order to making assembling, reduce production costs.

The controller for gas 10 that forms according to above-mentioned structure with water pond 99 cooperations after, can adorn the water heater 4 that is used for as shown in Figure 9.How following now explanation the utility model controls water heater 4.When turning on the hot water tap when water pond 99 is had an effect, will open by the fuel gas path that water pond 99 is controlled, make combustion gas can flow directly into the duct 11 of valve seat 1, the junction closure of while microswitch 91, (above action is with to commonly use water heater 9 identical and connect the power supply be connected to ignition 95, but the structure of water pond 99 is not necessarily the same with the water pond 5 that Fig. 2 discloses, also different structures), first normally close valve 2 is moved become out valve position, be that its valve plug 22 is opened (Figure 10), so combustion gas by duct 11 through flow export 21 to female nozzle 17, from central Venturi tube 46 ejection of burner 45, become female fire by the spark initiation of ignition plug 96 discharge generation.

In case flame detecting device 98 detects after female fire lights, igniting fastens 96 will stop discharge, and connection is connected to the power supply of second normally close valve 3, make its start become to open valve position, promptly fill in 32 therebetween and open (Figure 11), disengage combustion gas to passage 12, spray to each corresponding Venturi tube 46 from each main burner 18 again so that flow out 31 from it, being ignited by above-mentioned female fire becomes main fire, and the supply heating needs to use.

Because to the flow process of burning, omit the relation that traditional pressure differential disc utilizes the valve opening and closing fuel gas path from igniting, so igniting of combustion gas is very rapid, can reach quickly is thermal effect.

When closing the hot water tap, water pond 99 and microswitch 91 will reinstatements, so valve position is closed in normally close valve 2 and 3 involutions, and stop air feed burning stopped, and reply state before the water heater operation.

Need know that controller for gas 10 of the present utility model also can be adorned and be used for other small gas heating appliances, is not used in the restriction of water heater.

In addition, in allowed band, female nozzle 17 of being controlled by first normally close valve 2 can increase to more than two (containing two), in order to lighting female fire.

Certainly, the foregoing description can not break away under the scope of the present utility model in addition some variations, thus above explanation comprises and accompanying drawing shown in whole items should be considered as exemplary and non-limiting.

Claims (2)

1, a kind of water heater controller for gas is characterized in that, includes:

One valve seat has a duct and passage, and two first and second valve chambers with this hole link are arranged, this duct has an inflow entrance, further comprise a female nozzle on this valve seat, and main burner a plurality of and this channel connection, this each nozzle is a Venturi tube of corresponding burner respectively;

One first normally close valve is installed on first valve chamber, and its flow export is communicated with female nozzle, flows to the path of female nozzle from the duct with the switching combustion gas; And

One second normally close valve is installed on second valve chamber, and its flow export and channel connection flow to the path of passage to open and close combustion gas from the duct.

2, water heater controller for gas as claimed in claim 1 is characterized in that, this valve seat further comprise one with the pilot hole of hole link, for flow control valve is installed.

Images