CN2400746Y - Wind pressure switch for water heater - Google Patents

Abstract

The utility model relates to a wind pressure switch for a water heater, which is provided with a wind press plate, a connecting seat and a shaft rod which is used for connecting the wind press plate and the connecting seat. The wind press plate is rotated using the shaft rod as a shaft center, and an extension arm of a micro switch which needs being controlled is pressed by the end part of the wind press plate and thus the micro switch is in an on state. The utility model has the advantages of simple structure, light driving force for controlling the micro switch and convenient assembly, change and repair.

Description

The blast switch of water heater

The utility model relates to a kind of blast switch of water heater, refers to a kind of blast switch that is used in gas heater especially.

The blast switch 41 of common water heater comprises plate 47 as shown in Figures 1 and 2; One end connects aforementioned panels 47 and passes the connecting rod 46 in cover body 35 set holes 37; Be connected aforementioned connecting rod 46 end in addition, and have a pair of lug of perforation and the control arm 44 of weight 48 of being provided with; In conjunction with a pedestal with locking at cover body 35, and the microswitch with contact 43 42 of aforementioned control arm 44 through screw (axle) 45 interlockings.The water heater of 41 combinations of aforementioned blast switch, as shown in Figure 2, this water heater numbering wherein: 10 is that cock body, 11 is that gas inlet pipe, 12 is that gas escape pipe, 13 is that main burner, 14 is that fire guider, 15 is that ignitor, 16 is that induction electrode, 17 is that heat exchanger, 18 is that fin, 19 is that cold inflow pipe, 20 and 21 is that cold water pipe, 22 is that hot-water line, 23 is the hot water effuser.The lower edge 39 of main nationality 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, and cover body 35 inside promptly constitute an exhaust pathway 38; Coating the member and the aforesaid cover body 35 such as main burner 13, heat exchanger 17 of gas escape pipe 12 tops by a shell body 30, make the district that coats constitute an air inlet path 33, these shell body 30 tops also have a fit end 31 and form an air admission hole 32 in fit ends 31, and the discharge pipe 53 of aforementioned cover body 35 is ascended the throne 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 nationality joint 26, and cold water pipe 21 nationality joints 27 are connecting cold water pipe 20, it is open round cock body 10 to be provided with a lower house 34 in addition as for shell body 30 belows, 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, in order to consumer operation and be convenient to change battery (for ignitor, the control circuit of induction electrode is used), this open by design is (the sealing of instant heating hydrophone below) that general outer cover of water heater body is adopted.The air-tightness that does not communicate with shell body 30 extraneous airs that is coated with of aforementioned shell body 30 is good, so it combines with each member, should do airtight processing with pad, as for the coating of cover body 35 lower edges 39, then do airtight processing with resistant to elevated temperatures pad, just its bubble-tight requirement is not as shell body 30 height.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.See also Fig. 2, one end of one motor 50 is provided with fan-type blade 52 usefulness as the air inlet air-supply on air inlet path 33, motor 50 other ends form an air draft case 51,55 of the inlet ends of this air draft case 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 constitute supply and exhaust device 57.

Please consult Fig. 2 again, for avoiding because of installing fan-type blade 52 and turbine type blade (in air draft case 51, figure does not show) make flame cause floating fiery phenomenon (be flame can be stretched 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.Buffer board 60 does not cover whole waste gas outlet side 25 among the figure, is because as long as its function can be brought into play in corresponding air draft case 51 inlet ends 55 zones, but can covers whole waste gas outlet side 25 yet.

Please consult Fig. 2 again, for guaranteeing supply and exhaust device 57 performance functions, the then 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 41 is used to confirm the supply and exhaust device.The blast switch 41 of Fig. 1 as described above, its plate 47 is positioned at buffer board 60 tops, this plate 47 is connecting control arm 44 with the hole 37 that a connecting rod 46 passes cover body 35, the axle 45 that this control arm 44 is coupling at microswitch 42 makes microswitch 42 be ON or OFF in order to control contact 43, control arm 44 is provided with a weight 48 makes the actuating of plate only with light force be the ON state by control arm 44 push contacts 43, and this blast switch 41 is being controlled the electronic control circuit of igniting, induction usefulness.

As shown in Figure 3, 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.Supply and exhaust via turbine type blade in fan-type blade 52 and the air draft case 51, promptly in air inlet path 33 and exhaust pathway 38 form and send exhaust stream (as shown by arrows), the introduction of this inlet air and exhaust gas discharging, all carry out, can not have influence on air quality or oxygen content that gas heater is provided with the place outdoor.Because inlet and outlet wind-force constitutes a thrust to the plate 47 of blast switch 41, plate 47 is promptly passed, thereby control arm 44 promptly presses contact 43 and makes microswitch 42 be the ON state.Via the ON action of blast switch 41, gas heater begins to light a fire and moves and produce flame.

Because common blast switch 41 weights 48, it is provided with position height and the neither optimal values that easily acquires of weight, causes blast plate 47 and is difficult for being driven and can't accurately controls microswitch 42; And these blast switch 41 connecting rods 46 pass in cover body 35 holes 37, and its two ends and plate 47 and control 44 welding and be fixed as one are except that construction inconvenience, in the maintenance of member, when changeing, also bring inconvenience.

At the shortcoming of prior art, the utility model purpose is to provide a kind of blast switch of water heater, and it is simple in structure, and driving force gently is actuatable microswitch, and change, keep in repair all extremely convenient.

For achieving the above object, the utility model is achieved through the following technical solutions: a kind of blast switch of water heater, and it comprises blast plate, Connection Block, axostylus axostyle, microswitch etc.; It is characterized in that: the blast plate has end and a pair of lug that is provided with the hole; Connection Block has a pair of lug that is provided with the hole; Axostylus axostyle passes the hole of the lug of the hole of lug of above-mentioned blast plate and Connection Block, connects blast plate and Connection Block; Microswitch is provided with parked the end of above-mentioned blast plate on adjutage and this adjutage.

The blast plate is coupling in water heater cover body one side, and its end passes the hole of cover body and is positioned at the opposite side of cover body; Microswitch is positioned at above-mentioned cover body opposite side, with the stretch through hole of above-mentioned cover body of its set adjutage, and parked the end of above-mentioned blast plate on the adjutage.

But having an application of force blast plate is coupling in water heater cover body one side; Be subjected to above-mentioned blast plate end effect and path or the microswitch that opens circuit are installed in the opposite side of above-mentioned cover body with its set adjutage.

By the blast switch of a kind of water heater of the utility model, reached the purpose of above-mentioned creation.

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

Fig. 1: be common blast switch structural upright exploded view.

Fig. 2: be the known common switch application of Fig. 1 in general gas heater one example, and express not operating state of this blast switch.

Fig. 3: be Fig. 2 water heater running figure, and express blast switch and be operating state.

Fig. 4: be the utility model blast switch structural upright exploded view.

Fig. 5: be that Fig. 4 the utility model is incorporated into Fig. 2 water heater cover body profile, and express not operating state of blast switch.

Fig. 6: be Fig. 5 action diagram.

As shown in Figure 4, wherein cover body 35 is a water heater cover body 35 shown in Figure 2, is provided with a hole 37, and the utility model blast switch comprises: blast plate 80 has end 82 and a pair of lug 83 that extends upward and be provided with hole 84; Joint seat 85 has a pair of horizontal-extending and is provided with the lug 86 in hole 87; Axostylus axostyle 88 (things such as rivet or screw); Lock at pedestal 89 by a pair of screw 92, and be provided with the microswitch 90 (belonging to general microswitch) of controlling contacts 91 with adjutage 93.Please cooperate Fig. 4 and Fig. 5, joint seat 85 is fixedly arranged on 37 tops, hole of cover body 35 1 sides, blast plate 80 ends 82 pass hole 37 by aforementioned cover body 35 1 sides, make this end 82 be positioned at cover body 35 opposite sides, pass the hole 87 of a pair of lug 83 of a pair of lug 86 of joint seat 85 and blast plate 80 with axostylus axostyle 88,84 (two lugs 83 are between two lugs 86), blast plate 80 and joint seat 85 are combined as a whole, aforementioned microswitch 90 mat pedestals 89 are fixedly arranged on cover body 35 opposite side back, 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 6, when a wind-force F acts on blast plate 80 lower surfaces from lower to upper (consulting Fig. 3), blast plate 80 is 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 (normal operation of expression supply and exhaust device) and further control ignition procedure, with the normal use of maintaining heat hydrophone through blast plate 80.

Because microswitch 90 is provided with the adjutage 93 of control contact 91, thereby blast plate 80 forces on this adjutage 93 with set end 80, can obtain to reach the purpose of blast plate 80 control microswitches 90 with slight driving force.Even the utility model is not limited to also that the blast plate is one-body molded lug and an end on the implementation, that is, the material of the face of blast plate wind-engaging power effect available firm and light weight, thinner thickness processing in addition is combined into the position of thicker lug of thickness and end; Also do not limit the form that is connected of blast plate and Connection Block, or Connection Block, or pedestal is fixedly arranged on the means (can weld, screw locking etc.) of cover body; But a pair of lug of cover body 35 punch formings is to replace Connection Block.Moreover the end of blast plate acts on the adjutage of microswitch, is not limited among left side, right side or the hole 37 at cover body.

Claims (3)

1, a kind of blast switch of water heater, it mainly comprises blast plate, Connection Block, axostylus axostyle, microswitch; It is characterized in that: the blast plate has end and a pair of lug that is provided with the hole; Connection Block has a pair of lug that is provided with the hole; Axostylus axostyle passes the hole of the lug of the hole of lug of above-mentioned blast plate and Connection Block, connects blast plate and Connection Block; Microswitch is provided with parked the end of above-mentioned blast plate on adjutage and this adjutage.

2, the blast switch of water heater as claimed in claim 1 is characterized in that: the blast plate is coupling in water heater cover body one side, and its end passes the hole of cover body and is positioned at the opposite side of cover body; Microswitch is positioned at above-mentioned cover body opposite side, with the stretch through hole of above-mentioned cover body of its set adjutage, and parked the end of above-mentioned blast plate on the adjutage.

3, the blast switch of water heater as claimed in claim 1 is characterized in that: be coupling in water heater cover body one side but have an application of force blast plate; Be subjected to above-mentioned blast plate end effect and path or the microswitch that opens circuit are installed in the opposite side of above-mentioned cover body with its set adjutage.

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