CN2407287Y - Air volume detection device for water heater - Google Patents

Abstract

The utility model provides an air quantity detection device of water heater, is main including the temperature switch that locates the inside of water heater, and the electronic igniter (or the power) that concatenates aforementioned temperature switch, it is through the exhaust air motor trouble of water heater or exhaust tuber pipe jam etc. lead to hot waste gas can't discharge and the unusual high temperature actuation temperature switch that produces in the inside of water heater to cut off the signal of electronic igniter or the power and stop flame burning, stop the use of water heater under the state that the aforesaid waste gas can't discharge, in order to guarantee safety, the utility model discloses the structure is simplified, more has reliability, stability and certainty than general wind pressure switch.

Description

The air quantity checking device of water heater

The utility model relates to a kind of air quantity checking device of water heater, refers to the air quantity checking device of a kind of use at gas heater especially.

The water heater of a kind of air inlet, exhaust separate design, as shown in Figure 1, the figure number of this water heater is numbered: 10 for the cock body include the pressure differential disc (being used to open and close main fire, female fiery gas) that is subjected to ignition control, 11 for gas inlet pipe, 12 for gas escape pipe, 13 be that main burner, 14 is the hot water effuser for hot-water line, 23 for cold water pipe, 22 for cold water inflow pipe, 20 and 21 for fin, 19 for heat exchanger, 18 for induction electrode, 17 for ignitor, 16 for fire guider, 15.

The lower edge 39 of main mat one cover body 35 of water heater envelopes the waste gas outlet side 25 on the heat exchanger 17, to separate waste gas outlet side 25 and air upstream end 24 (being positioned at heat exchanger 17 belows), this cover body 35 has the tap 54 that an outlet 36 is communicated with discharge pipe 53, cover body 35 inner formation one exhaust pathways 38; Member and aforesaid cover bodies 35 such as the main burner 13 of mat one shell body 30 coating gas escape pipes 12 tops, heat exchanger 17, make and coat formation one air inlet path 33, district, these shell 30 tops have a fit end 31, form an air admission hole 32 in fit end 31, the discharge pipe 53 of aforementioned cover body 35 is arranged in air admission hole 32.The convenience of Bao Fuing for the benefit of, hot-water line 22 is connecting hot water effuser 23 by joint 26, cold water pipe 21 is connecting cold water pipe 20 by joint 27, below shell body 30, be provided with a lower house 34 in addition, open round cock body 10, hot water effuser 23, cold water pipe 20 and cold water inflow pipe 19 etc., this lower house 34 is an open by design, help firepower and adjust the setting of switch and water yield size adjustment switch, be beneficial to consumer's operation and be convenient to change battery 70 (for ignition 71 usefulness of control ignitor 15 and induction electrode 16), this open by design is adopted (the not sealing of instant heating hydrophone below) by general outer cover of water heater body.Fit end 31 cover of aforementioned hot hydrophone shell body 30 then one wear to outdoor, have an airduct (scheming not show) that outer tube and interior pipe are done concentric arrangement.The aforementioned hot hydrophone is provided with supply and exhaust device 57 on air inlet path 33 and exhaust pathway 38.Please refer to Fig. 1, one end of motor 50 is provided with fan-type blade 52, motor 50 other ends form air draft case 51, the inlet end 55 of this air draft case 51 is the outlets 36 that are being connected cover body 35,56 of the exhaust ends of fumer 51 are being connected the tap 54 of discharge pipe 53, one turbine type blade (figure does not show) is located in the air draft case 51, as the usefulness of exhaust, so constitutes supply and exhaust device 57.Referring again to Fig. 1, for avoiding because of installing the turbine type blade (in air draft case 51, figure does not show) make flame cause floating fiery phenomenon (be flame can stretch long) and cause fray-out of flame, therefore above the waste gas outlet side 25 of heat exchanger 17, be provided with the buffer board 60 of a multiple punching 61, to reduce wind-force to influence that flame was produced.

Please refer to Fig. 1, for guaranteeing supply and exhaust device 57 performance functions, the igniting of gas heater (flame generation) action must can be carried out in the 57 running back beginnings of supply and exhaust device, with guarantee to blow, the carrying out of air draft, for this reason, must be provided with the running that a blast switch is used to confirm the supply and exhaust device.Among Fig. 1, blast switch comprises: blast plate 80 has end 82 and a pair of lug 83 that extends upward and be provided with the hole; Joint seat 85 has a pair of horizontal-extending and is provided with the lug 86 in hole; Axostylus axostyle 88 (things such as rivet or screw); Lock at pedestal by a pair of screw 92, and be provided with microswitch 90 (belonging to general microswitch) with adjutage 93 control contacts 91, aforementioned joint seat 85 is fixedly arranged on 37 tops, hole of cover body 35 1 sides, the end 82 of blast plate 80 passes hole 37 by aforementioned cover body 35 1 sides, make 82 of ends at cover body 35 opposite sides, with axostylus axostyle 88 pass the hole (two lugs 83 are between two lugs 86) of joint seat 85 a pair of lugs 86 and blast plate 80 a pair of lugs 83 thereafter, just blast plate 80 and joint seat 85 are integrally combined, after aforementioned microswitch 90 mat pedestals are fixedly arranged on cover body 35 opposite sides, the adjutage 93 of microswitch 90 passes hole 37 and extends towards blast plate 80, and the end 82 of aforementioned blast plate 80 is parked on adjutage 93.

As shown in Figure 2, when the hot water tap at gas heater hot water effuser 23 end ends is opened, make motor 50 running in advance of supply and exhaust device 57 via water pond or current actuation switch.Rotation via turbine type blades in the air draft case 51 like this, promptly in air inlet gas circuit footpath 33 and exhaust pathway 38 form and send exhaust stream, the introduction of this inlet air and exhaust gas discharging are all carried out outdoor, can not have influence on air quality or oxygen content that gas heater is provided with the place.Because air inlet wind-force constitutes a thrust to the blast plate 80 of blast switch, blast plate 80 is promptly passed.When a wind-force F acted on blast plate 80 lower surfaces from lower to upper, blast plate 80 was that center of rotation produces clockwise deflection with axostylus axostyle 88 promptly.At this moment, the end 82 of blast plate 80 promptly deflects down and presses down adjutage 93 because of leverage, by adjutage 93 compressing contacts 91, makes microswitch 90 be the ON conducting state again.So promptly detect wind-force (expression supply and exhaust device normal operation) and further control the igniting action of ignition 71 through blast plate 80.

Because whether blast switch can run well to produce the checking device of wind-force and the action of control ignition as detecting motor, therefore, stability, certainty and the reliability of blast switch action occupy an important position.Therefore, blast switch is combined by a plurality of parts, and its continuous action relation to each other as making mistakes the people can't be trusted.

Whether the purpose of this utility model is to provide a kind of and need not to use blast switch can run well with the air quantity checking device of the water heater that produces wind-force and the action of control ignition as motor, the serviceability temperature switch is as checking device, motor failure or the obstruction of exhaust airduct etc. cause hot waste gas to discharge and when producing abnormal high temperature in the inner institute of water heater, cut-out electric signal or current signal and stop flame combustion.

For achieving the above object, the utility model is achieved through the following technical solutions: a kind of air quantity checking device of water heater mainly comprises and is located at water heater temperature inside switch; The temperature switch serial connection ignition of control ignition signal, ignition is connected with power supply.Perhaps, the control power supply temperature switch that is conducted to ignition electric power is connected between ignition and the power supply.

By the air quantity checking device of a kind of water heater of the utility model, reached above-mentioned creation purpose, the utility model structure is simplified, and general blast switch has more reliability, stability and certainty.

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

Fig. 1 is the example with general gas heater of blast switch, and expresses the state that this blast switch does not move;

Fig. 2 is Fig. 1 water heater running figure, and expresses the state that blast switch is action;

Fig. 3 is the embodiment that the utility model is applied to not have the general gas heater of blast switch;

Fig. 4 is Fig. 3 the utility model circuit structure diagram;

Fig. 5 is another embodiment of the utility model circuit structure.

Please referring to Fig. 3 and shown in Figure 4, the air quantity checking device of the utility model water heater comprises: temperature switch 72 is located at water heater inside, and the preferably is affixed by on the wall of cover body 35, and in the present embodiment, temperature switch 72 is the normally closed type temperature switch; Be connected in series the ignition 71 of aforementioned temperature switch 72, this ignition 71 is the ignition that electric power provides ignitor 15, induction electrode 16 actions with power supply 70, and electric signal circuit serial connection aforementioned temperature switch 72 is got in described ignition 71 inside.

When the hot water tap at gas heater hot water effuser 23 end ends is opened, make motor 50 runnings of supply and exhaust device 57 via water pond or current actuation switch, while gas also enters fire guider 14 and ignition 71 is also switched on and produce electrions at ignitor 15 becomes female fiery with the gas that the aforementioned fire guider 14 that ignites flows out, thereafter main burner 13 also feeder gas is lighted the (formation of relevant female fire, main fire of main fire by aforementioned female fire, be general technology, repeat no more).After main fire generates be combustion heat interchanger 17 to produce hot water, hot waste gas then is subjected to motor 50 wind drive by waste gas outlet side 25 and is discharged by the exhaust airduct.

When in case motor 50 faults or exhaust airduct obstruction pyrogenicity waste gas can't be discharged, main fire still burns away heat exchanger 17 and produces hot water, but hot waste gas can not arranged and promptly can be caused the water heater internal temperature to raise, this abnormal temperature makes temperature switch 72 escapes for opening circuit, cut off the electric signal of ignition 71, stop flame combustion thereby further cut off the gas air feed, so can guarantee safety.

Fig. 5 demonstrates another embodiment of the utility model, wherein, temperature switch 72 is serially connected with 71 of power supply 70 and ignitions, when following of the state that is used for can not arranging at aforementioned hot waste gas causes the water heater internal temperature to raise, 70 electric power that are conducted to ignition 71 of cutting off the electricity supply stop flame combustion.

Temperature switch in the utility model is not limited to normally closed type, open in usually also can; Temperature switch is not limited to be arranged on the wall of cover body, can be located at water heater inside and not exist together and select different temperatures numerical value for use; Do not limit the specific electric signal line that is connected in series between temperature switch and ignition, the utility model structure is simplified, and general blast switch has more reliability, stability and certainty.

The utility model does not limit the water heater form of enforcement, except that the water heater that inlet and outlet separate, all exhaust motors that is provided with, for example the general water heater of No. 83215491 case, No. 85200697 case, No. 86200323 case etc. all can be the utility model and uses.

Claims (2)

1, a kind of air quantity checking device of water heater is characterized in that: mainly comprise and be located at water heater temperature inside switch; The temperature switch serial connection ignition of control ignition signal, ignition is connected with power supply.

2, a kind of air quantity checking device of water heater is characterized in that: mainly comprise and be located at water heater temperature inside switch; The temperature switch that the control power supply is conducted to ignition electric power is connected between ignition and the power supply.

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