CN202470170U

CN202470170U - Smoke exhauster with adaptively adjusted fan speed

Info

Publication number: CN202470170U
Application number: CN 201220052858
Authority: CN
Inventors: 方献良; 陈旭波; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2012-02-17
Filing date: 2012-02-17
Publication date: 2012-10-03
Anticipated expiration: 2022-02-17

Abstract

The utility model relates to a smoke exhauster with adaptively adjusted fan speed. The smoke exhauster comprises a smoke exhauster shell, a motor arranged in the smoke exhauster shell and a speed regulation control circuit capable of controlling the fan speed, wherein the motor is connected with an air outlet through an exhaust pipeline, and the air outlet is communicated with a public flue. The smoke exhauster is characterized by also comprising a sensor capable of detecting the pressure change of the public flue, wherein the induction output end of the sensor is connected with the input end of the speed regulation control circuit, and the output end of the speed regulation control circuit is connected with the motor. When the pressure change of the public flue is detected by the sensor, corresponding judgment is made, and the power of a motor system required under the corresponding pressure is output, so that the fan speed of the smoke exhauster can be adjusted adaptively. The smoke exhaust effect of the public flue is improved, the flue is prevented from being blocked, indoor smoke is smoothly exhausted, and the smoke exhaust environment of kitchens is effectively improved.

Description

But the lampblack absorber that the rotation speed of fan self adaptation is regulated

Technical field

The utility model relates to a kind of lampblack absorber, the particularly a kind of lampblack absorber that can realize that the rotation speed of fan self adaptation is regulated.

Background technology

At present; The oil smoke that domestic high residential building pump drainage culinary cuisine produces adopts " fume tube type " (bottom is sealed) design mostly, generally is the public public flues of tens of users of family, and flue gas receives thrust upwards all the time in theory; The oil smoke of each subscriber household can be discharged along public flue; But when running into many concentrated operational phases (as cooking the time) of lampblack absorbers in the different floors, a large amount of oil smoke enters public flue, and oil smoke is long apart from bringing certain retardation after the motion through flue; Make the internal pressure of public flue increase, thereby have influence on the mist extractor effect of each subscriber household.

In order to guarantee the effect of family's mist extractor; Generally need change with the pressure that adapts to public flue through the blower fan exhaust air rate of regulating lampblack absorber, still, traditional range hood rotating speed leans on manual adjustment usually; Often need the user repeatedly to regulate intervention, waste time and energy; And present lampblack absorber gear is more fixing, and air quantity output is also fixing, and no matter how user's oil smoke amount size changes, and can only select static stall to regulate, and can't adapt to the environment of actual use.

In order to accomplish intelligent and the hommization adjusting; Be that the Chinese utility model " regulating the smoke exhaust ventilator of air draft speed according to oil smoke concentration automatically " of ZL200920000606.X discloses a kind of smoke exhaust ventilator that can regulate air draft speed automatically if any the patent No. in the prior art; Comprise the smoke exhaust ventilator main frame; Also comprise the oil smoke detection control apparatus; The oil smoke detection control apparatus is installed on the smoke exhaust ventilator main frame, and the oil smoke detection control apparatus comprises photodetector unit and control circuit, and oil pumping cigarette main frame comprises an extractor fan at least; Photodetector unit is connected with control circuit, and control circuit is connected with extractor fan.The principle that above-mentioned patent utilization oil smoke causes light intensity decays to the absorption and the reflection effect of light adopts photoelectric detecting method to measure oil smoke concentration, and converts the variation of oil smoke concentration into the signal of telecommunication and export to control circuit; Control circuit is regulated the air draft speed of exhaust equipment in view of the above, and still, the oil smoke detection control apparatus in this patent is mounted on the main frame of smoke exhaust ventilator; What detect is indoor oil smoke concentration; The oil smoke pressure condition that can't in time reflect public flue, in actual use, when outside oil smoke pressure; Motor still operates in current constant power gear; Have only behind a certain amount of oil smoke of indoor generation, the motor self-checking device just can start, and its shortcoming is to use and indoorly in the process still can produces a large amount of fume pollutions; And the motor speed of lampblack absorber regulates the actual oil smoke pressure of action and changes and will lag behind, and can't reach desirable smoke discharging effect.

The utility model content

But the utility model technical problem to be solved is the lampblack absorber that provides a kind of rotation speed of fan self adaptation simple in structure and the mist extractor better effects if to regulate to above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: but the lampblack absorber that a kind of rotation speed of fan self adaptation is regulated; Include the lampblack absorber housing, be arranged at motor in this lampblack absorber housing and the speed-regulating control circuit that can control said rotation speed of fan; Wherein, Said motor links to each other with air outlet through discharge duct, and said air outlet is connected with public flue, it is characterized in that: described lampblack absorber also is provided with one can detect the sensor that said public flue pressure changes; The induction output of said sensor and the input of said speed-regulating control circuit link to each other, and the output of this speed-regulating control circuit links to each other with said motor.

Can adopt various devices of the prior art (like existing pressure sensor) to realize the detection that public flue pressure is changed; But common pressure sensor generally is made up of elastic sensing element and displacement sensing element (or strain gauge); Utilizing elastic sensing element to make by measuring pressure acts on certain area and converts displacement or strain into; Convert the signal of telecommunication that becomes certain relation with pressure into by displacement sensing element or strain gauge then, this sensor has certain environment for use requirement, and components and parts are required than higher; Inapplicable use under soot pollution environment; In case and the elastic sensing element surface is damaged or lost efficacy, sensor just can't normally use, and manufacturing price is higher relatively.As preferably; The application adopts the sensor of following structure to realize: this sensor includes noumenal seat; Cut apart in the said noumenal seat and form first chamber and second chamber that is interconnected; Be equipped with electrolyte in said first chamber and second chamber, the overhead height of said second chamber is greater than the overhead height of said first chamber; Wherein, offer air inlet and exhaust outlet on the said noumenal seat, said air inlet and said first chamber are connected, and are provided with the pressure conduction device that can be connected with said air outlet in this air inlet; Said exhaust outlet and said second chamber are connected; Be provided with exhaust apparatus in this exhaust outlet; And; Also be provided with the current potential detection part that can detect electrolyte height in this chamber in said second chamber, the induction output of said current potential detection part and the input of said speed-regulating control circuit link to each other.So sensor is through being acted on electrolyte surface by measuring pressure, making wins, and can to produce certain liquid level between the cavity volume and second cavity volume poor; Be that different pressure can produce different liquid levels,, can calculate corresponding wind pressure value according to different liquid levels through the conversion of control circuit; Thereby the oil smoke pressure of measuring public flue changes, and simple in structure, the easily manufactured and cost of this sensor is low, and electrolyte is enclosed in the noumenal seat; Receive external interference little; The problem that does not exist components and parts to use the back to lose efficacy and be out of shape for a long time, detection sensitivity is high, longer service life.

Generally; When the user normally uses lampblack absorber; The wind pressure value of public flue is about 200Pa, and the liquid level difference height under this wind pressure value probably is about 30mm, and liquid overflows from noumenal seat when preventing that blast from increasing; As preferably, the height difference of described second chamber roof and first chamber roof is being good greater than 30mm.

For easy for installation; And can effectively the pressure of public flue be introduced in the inner chamber of noumenal seat; As preferably, described pressure conduction device is one to plug and the cylindrical rod member of axial limiting in said air inlet, and said cylindrical rod member offers the inlet channel that connects vertically.So the pressure of public flue can enter into through the inlet channel of cylindrical rod member in first chamber.

In order to make the liquid level in the noumenal seat can more significantly sense the effect that blast changes, as preferably, the inlet channel of said cylindrical rod member is formed with the air pressure tap in the bottom, and the pore size of described air pressure tap is 1～10mm.In order to prevent that oil smoke from blocking the inlet channel of cylindrical rod member; The aperture of air pressure tap is difficult for too small (less than 1mm); But the aperture of air pressure tap is unsuitable excessive (greater than 10mm) also, when the aperture is excessive; The effect of the gas pressure of public flue on liquid level will weaken, and reduces the detection sensitivity of sensor.

In order to realize the axial limiting of cylindrical rod member; Preferred as further; The top of said cylindrical rod member is formed with air pressure and inserts the hole; This air pressure inserts the hole and can link to each other with said air outlet with the air inlet pipe that said public flue is connected through one, and the lateral wall of said cylindrical rod member is along circumferentially forming the radially spacing snap ring of evagination, and the air inlet upper surface of said spacing snap ring and said noumenal seat offsets and realizes the axial limiting of said cylindrical rod member at this air inlet.So cylindrical rod member can be connected to exhaust outlet through air inlet pipe, make sensor itself can be installed in the optional position, as being arranged on exhaust outlet, also can be arranged in the lampblack absorber casing, install more flexible; When preventing that noumenal seat from toppling over; Liquid overflows from the pressure conduction device or pours out; Air pressure at pressure conduction device top inserts the diaphragm seal that can also be provided with one deck elastically deformable in the hole; The sealing film is close to the liquid surface setting, and ambient pressure is delivered to earlier on the diaphragm seal, remakes through diaphragm seal then and uses on the liquid.

In order to detect the air pressure change of public flue more accurately, during actual the use, as preferably, the spacing distance between the inner bottom surface of the bottom of said cylindrical rod member and said first chamber is 5～30mm.When spacing distance during less than 5mm, this moment cylindrical rod member the bottom of too close first chamber in bottom, the reaction force that air pressure affacts when discharging on the first chamber bottom surface increases, and is unfavorable for the smooth discharge of air pressure; When spacing distance during greater than 30mm, this moment, the bottom of cylindrical rod member might break away from liquid level, and air pressure remakes through air and uses on the liquid level from the air pressure tap of the cylindrical rod member back of coming out, and pressurized effect weakens, and can have influence on the detection sensitivity of sensor.

As preferably, said second chamber can be following structure: this second chamber includes left half cavity and right half chamber that is interconnected, and the overhead height in half chamber, the said right side is greater than the overhead height of said left half cavity; Wherein, said exhaust outlet is opened in the top, half chamber, the right side of said second chamber, and this exhaust outlet is the Vertical Channel of a both ends open and connection, and the bottom end opening of said exhaust outlet is formed with step surface; Also be communicated with through the passage of laterally offering between the left half cavity of said second chamber and the said exhaust outlet, said passage is opened in the position near said left half cavity top.

In order to guarantee the balance of inner and outer air pressure; And prevent that liquid from overflowing from exhaust outlet; As preferably, described exhaust apparatus includes top cover, push rod, spring and the base that is placed in the said exhaust outlet, wherein; The bottom of said base and said step surface offset, and said base offers the pore that runs through vertically; One end of said spring is arranged on the said base, and the other end of this spring and the bottom of said push rod offset; Said top cover is fixedly set in the top end opening of said exhaust outlet, and this top cover offers a through hole vertically, and said push rod can form the gap that supplied gas is discharged all the time between the top of said push rod and the bottom of said top cover under the vertical state of forward; Said push rod be inverted or heeling condition under, said spring has and drives said push rod and its top is offseted all the time and the trend of sealing said through hole with the bottom of said top cover.

Preferred as another, said second chamber also may simply be the elongated passageway vertically offered, and said exhaust outlet is the blind hole of a top end opening; Be communicated with through the passage of laterally offering between said second chamber and the said exhaust outlet, said passage is opened in the position near said second chamber roof.The volume of this second chamber is little; Not only saved electrolyte, and the structure of elongated passageway helps to improve the sensitivity of induction, when ambient pressure has trace to change; Will produce the certain liquid level difference in the elongated passageway of second chamber and change, make that the reaction of sensor is sensitive more; And be not communicated with second chamber bottom the exhaust outlet, can avoid getting rusty the service life of elongated component behind the spring members Long contact time electrolyte.

Correspondingly, described exhaust apparatus includes top cover, push rod and the spring that is placed in the said exhaust outlet, and wherein, an end of said spring and the bottom of said exhaust outlet offset, and the other end of this spring and the bottom of said push rod offset; Said top cover is fixedly set in the top end opening of said exhaust outlet, and this top cover offers a through hole vertically, and said push rod can form the gap that supplied gas is discharged all the time between the top of said push rod and the bottom of said top cover under the vertical state of forward; Said push rod be inverted or heeling condition under, said spring has and drives said push rod and its top is offseted all the time and the trend of sealing said through hole with the bottom of said top cover.This exhaust apparatus has saved base, and structure is more simple, and assembling is more prone to.

Measuring liquid level height for ease; As preferably; Described potential detection device includes a plurality of electric conductors that are parallel to each other and are provided with at interval along the vertical height direction of said second chamber, and the output of each said electric conductor links to each other with described speed-regulating control circuit through a signal circuit.So; The quantity of electric conductor and spacing distance can be arranged according to practical measurement requirement; The liquid level at each electric conductor place has been represented an atmospheric pressure value, when liquid level arrives corresponding electric conductor height, just can record the atmospheric pressure value of public flue at this moment through correspondent control circuits.

For the ease of installing and changing; Preferred as further, the sidewall of described second cavity vertically offers the installing hole that is provided with at interval, and described electric conductor is a conduction copper column; Said conduction copper column plugs and is fixed in the corresponding said installing hole; And an end of each said conduction copper column is arranged in said second cavity volume, and the other end of each said conduction copper column exposes to outside the said noumenal seat output as said electric conductor.Conduction copper column has good electrical conductivity, can improve the accuracy and the sensitivity of detection.

Signal circuit can realize through various circuit structures of the prior art, and as preferably, simply, can adopt following circuit to realize: described signal circuit includes

Signal receiving circuit, the output of each said electric conductor is connected the input of this signal receiving circuit;

Logic switching circuit is connected the output of said signal receiving circuit, and whether this logic switching circuit is used to detect said signal receiving circuit has the transducing signal input, and converts corresponding transducing signal into switch controlling signal output; And

Signal output apparatus; Can the switch controlling signal of said logic switching circuit be converted into signal of telecommunication output; And; The input of said signal output apparatus links to each other with the output of said logic switching circuit, and the output of this signal output apparatus links to each other with the input of said speed-regulating control circuit.

In order to realize installing and fixing of sensor,, also be provided with the fixture that is used for said sensor installing and locating on the described noumenal seat as preferably.

Fixture can adopt various structures to realize; As preferably; Described fixture may simply be a stamping forming plate; This plate is fixedly connected on the said noumenal seat through screw, and said fixture includes two flanks that can be respectively recline mutually with installed surface, offers connecting hole on each said flank.This fixture structure is simple, and volume is little, and installation and removal are all very convenient.

In order to make things convenient for the interpolation of electrolyte, as preferably, described noumenal seat also offers inlet, is connected with detachable end on the said inlet.

Compared with prior art, the advantage of the utility model is: lampblack absorber is provided with the sensor of the oil smoke pressure variation that can detect public flue, and can convert this induced signal into the signal of telecommunication; No matter how complicated after using present technique, lampblack absorber adaptability promotes greatly, flue environment; When sensor detects the pressure variation of public flue, make corresponding judgement, according to electric system power output output required under the relevant pressure; Realized the adjustment adaptively of soot motor rotating speed; Not only improved the smoke discharging effect of public flue, prevented that flue from stopping up, and also guaranteed the smooth and easy eliminating of indoor oil smoke simultaneously; Improve the kitchen exhaust environment effectively, also realized green energy conservation simultaneously; In addition, the design's sensor carries out pressure sensitive through the variation of liquid height, can detect trickle pressure and change, and sensitivity is higher, and cheap, practicality is big, be fit to industrial products and produce in batches.

Description of drawings

Fig. 1 is one of sensor perspective view of the utility model embodiment one.

Fig. 2 be the utility model embodiment one the sensor perspective view two.

Fig. 3 is the sensor three-dimensional exploded view of the utility model embodiment one.

Fig. 4 is the sensor cutaway view of the utility model embodiment one.

Fig. 5 is the cap structure sketch map of the exhaust apparatus of the utility model embodiment one.

Fig. 6 is the cutaway view of top cover shown in Figure 5.

Fig. 7 is the noumenal seat cutaway view of utility model embodiment one.

Fig. 8 is the pressure conduction device cutaway view of utility model embodiment one.

Fig. 9 is the signal circuit schematic diagram of utility model embodiment one.

Figure 10 is the sensor perspective view (removing side plate) of the utility model embodiment two.

Figure 11 is the sensor cutaway view of the utility model embodiment two.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment one, referring to Fig. 1～Fig. 9:

But present embodiment discloses the lampblack absorber that a kind of rotation speed of fan self adaptation is regulated; This lampblack absorber includes the lampblack absorber housing, is arranged at motor in this lampblack absorber housing and the speed-regulating control circuit that can control motor speed; Wherein, motor links to each other with air outlet through discharge duct, and air outlet is connected with public flue; The air outlet of lampblack absorber also is provided with one can detect the sensor that public flue pressure changes; This sensor has the induction output of ability output voltage signal (also can be the signal of other patterns), and the induction output of this sensor and the input of speed-regulating control circuit link to each other, and the output of speed-regulating control circuit then links to each other with motor; Speed-regulating control circuit in the present embodiment is a prior art; Can adopt existing various circuit structure to realize; Present embodiment is not done in detail and is given unnecessary details; The mounting means of lampblack absorber housing and motor also can adopt various structure of the prior art to realize that present embodiment omits the description to the lampblack absorber concrete structure in addition.

Shown in Fig. 1～9; The sensor of present embodiment includes a noumenal seat 1; Offer air inlet 11, exhaust outlet 12 and inlet 13 on the noumenal seat 1; Be connected with detachable end 2 on the inlet 13, injected liquid in the noumenal seat 1 in the past through inlet 13, and the capacity of adjustment liquid in noumenal seat 1; The inside of noumenal seat 1 is cut apart and is formed the first chamber A and the second chamber B that is interconnected, and the overhead height of the second chamber B is greater than the overhead height of the first chamber A; Also be provided with on the lateral wall of noumenal seat 1 and be used for the fixture that this sensor is installed; Fixture can be various mounting means of the prior art; Simply, can adopt a stamping forming plate 9, the body part of this plate 9 is fixedly connected on the noumenal seat 1 through screw 92; Plate 9 has two symmetrically arranged flanks 91, offers connecting hole 911 on each flank 91;

Wherein, Charged into electrolyte among the first chamber A and the second chamber B, the capacity of electrolyte is too much unsuitable, too much from noumenal seat 1, overflows easily; The capacity of electrolyte also is difficult for very few; Cross boundary's air pressure is bigger outside at least state and can't reach predetermined liquid level difference down, as preferably, the capacity that electrolyte accounts for the first chamber A in the present embodiment is about 90%; The air inlet 11 and the first chamber A are connected, and are provided with the pressure conduction device that can be connected with air outlet in this air inlet 11, and the pressure conduction device is used for the air pressure of public flue is incorporated in the noumenal seat 1;

The second chamber B of present embodiment includes left half cavity and right half chamber that is interconnected, and the overhead height in right half chamber is greater than the overhead height of left half cavity; Wherein, exhaust outlet 12 is opened in the top, half chamber, the right side of the second chamber B, and exhaust outlet 12 is the Vertical Channel of a both ends open and connection, and half chamber, the right side of the bottom end opening of exhaust outlet 12 and second chamber is connected; Be communicated with through the passage of laterally offering 15 again between the left half cavity of the second chamber B and the exhaust outlet 12; In order can the gas at left half cavity top fully to be discharged; The height of passage 15 should be offered near the position at left half cavity top, will be higher than the height of the fundamental measurement stroke of sensor at least;

Also be provided with exhaust apparatus in the exhaust outlet 12; Exhaust apparatus can be discharged gas outside the second chamber B when the pressure in the second chamber B increases; Thereby keep air pressure and ambient atmosphere equilibrium in the second chamber B; Can also prevent simultaneously sensor under inclination or inversion state, electrolyte overflows from noumenal seat; Also be provided with the current potential detection part that can detect electrolyte height in this chamber among the second chamber B, the induction output of current potential detection part and the input of speed-regulating control circuit link to each other;

Generally; The wind pressure value of the public flue that the user produces when normally using lampblack absorber as 200Pa about, probably can produce the liquid level difference height about 30mm under this wind pressure value, liquid overflows from noumenal seat 1 when preventing that blast from increasing; Should guarantee to have bigger difference in height between the second chamber B top and the first chamber A top; Being good greater than 30mm, as preferably, the second chamber B top of present embodiment and the difference in height at the first chamber A top are chosen as 50mm.

Pressure conduction device in the present embodiment is a cylindrical rod member 3 that is inserted in the air inlet 11, and in order to let air pressure be passed among the first chamber A, cylindrical rod member 3 offers the inlet channel 31 that connects vertically; The inlet channel 31 of cylindrical rod member 3 is formed with air pressure tap 32 in the bottom; The aperture of air pressure tap 32 is difficult for inlet channel 31 obstructions that too small, too small aperture causes cylindrical rod member 3 easily, and the aperture of air pressure tap 32 also is difficult for excessive; Excessive aperture can't the significant reaction external pressure variation; Reduce the sensitivity that air pressure detects easily, preferably, the pore size of air pressure tap 32 is advisable with 1～10mm; In addition; Cylindrical rod member 3 inserts precision and the sensitivity that the interior degree of depth of the first chamber A also can influence detection; The bottom of cylindrical rod member 3 can not offset with the inner bottom surface of the first chamber A, can not break away from liquid level, in order to reach quite good detecting effectiveness; React the variation of external pressure exactly, the bottom of cylindrical rod member 3 can not and the inner bottom surface of the first chamber A between spacing distance be preferably 5～30mm;

The installation of sensor for ease; The top of cylindrical rod member 3 also is formed with air pressure and inserts hole 33; Can insert at air pressure and be connected with the air inlet pipe that is connected with public flue and air outlet on the hole 33; The air pressure of public flue can transfer among the first chamber A through air inlet pipe, and the installation site of sensor itself just can be provided with arbitrarily according to actual conditions, uses more convenient flexible; Because the open at both ends of cylindrical rod member 3; When preventing that noumenal seat from toppling over, liquid overflows from cylindrical rod member 3 (pressure conduction device) or pours out, and the air pressure at cylindrical rod member 3 tops inserts the diaphragm seal (like pellosil) that can also be provided with one deck elastically deformable in the hole 33; Ambient pressure is delivered on the diaphragm seal earlier; Remake through diaphragm seal then and use on the liquid, diaphragm seal itself had both played sealing function, played the effect of transmitting pressure again; Diaphragm seal need be close to liquid surface setting, the degree of accuracy that can improve barometric surveying as far as possible; Fall among the first chamber A in order to prevent cylindrical rod member 3; The lateral wall of cylindrical rod member 3 is along circumferentially forming the radially spacing snap ring 34 of evagination, and this spacing snap ring 34 can offset with air inlet 11 upper surfaces of noumenal seat 1 and realize the axial limiting of cylindrical rod member 3 at this air inlet 11.

The exhaust apparatus of present embodiment adopts following structure: this exhaust apparatus includes top cover 4, push rod 5, spring 6 and the base 7 that is placed in respectively in the exhaust outlet 12; Wherein, Position that the bottom of exhaust outlet 12 and the second chamber B are connected forms T shape pore structure, promptly forms step surface 121 on the bottom end opening 122 of exhaust outlet 12, and base 7 is limited on the step surface 121 with exhaust outlet 12; Base 7 has a groove; One end of spring 6 is placed in the groove of base 7, and base 7 also offers the pore 71 that runs through vertically, and the bottom of the other end of spring 6 and push rod 5 offsets; And; The cross section of top cover 4 becomes T shape, and this top cover 4 offers a through hole 43 vertically, and the T shape stub end 41 of top cover 4 can be limited in the top of exhaust outlet 12; The T shape microcephaly of top cover 4 holds in 42 top end openings that are placed in exhaust outlet 12, and this top cover 4 is connected for tight fit with exhaust outlet 12; In order to guarantee the smooth discharge of gas in normal operation, push rod 5 can form the gap that supplied gas is discharged all the time between the bottom of the top of push rod 5 and top cover 4 under the vertical state of forward; And when sensor run-off the straight rollover or inversion, overflow from exhaust outlet 12 in order to prevent electrolyte, push rod 5 is under inversion or heeling condition; Spring 6 has and drives that top that push rod 5 makes this push rod 5 offsets with the bottom of top cover 4 all the time and with the trend of through hole 43 sealings, the top cover 4 is here formed a check valve with push rod 5, has only under normal operating condition; Gas can be discharged from exhaust outlet 12; In case tilt or be inverted, then push rod 5 through hole 43 that is about to top cover 4 is shut, and prevents that electrolyte from flowing out.So; During work; Air pressure in the second chamber B increases; Gas can finally be discharged from through hole 43 through the slit between slit, push rod 5 and top cover 4 bottoms between exhaust outlet 12 and the push rod 5, equates thereby make the interior air pressure of the second chamber B keep all the time with external atmospheric pressure, guarantees that the liquid level difference that produces between the first chamber A and the second chamber B can accurately reflect the air pressure of public flue.

The potential detection device of present embodiment is mainly the electric conductor 8 that contact can produce voltage behind the electrolyte; Present embodiment is selected electric conductivity favorable conductive copper post (also can be other conductors); Electric conductor 8 has vertical height directions a plurality of and the edge second chamber B in parallel to each other to be provided with at interval; The atmospheric pressure value gear that the quantity of electric conductor 8 is measured is according to actual needs confirmed; The sidewall of the second chamber B vertically offers the installing hole 14 that is provided with at interval, and electric conductor 8 plugs and is fixed in the corresponding installing hole 14, and an end of each electric conductor 8 is arranged in second cavity volume; The other end of each electric conductor 8 exposes to outside the noumenal seat 1 output as electric conductor 8, and the output of each electric conductor 8 links to each other with speed-regulating control circuit through a signal circuit.

Wherein, signal circuit is mainly realized converting the detected transducing signal of potential detection device into the signal of telecommunication that speed-regulating control circuit can receive and discern, and this signal circuit includes

Signal receiving circuit T1, the output of each electric conductor 8 is connected the input of this signal receiving circuit T1;

Logic switching circuit T2 is connected the output of signal receiving circuit T1, and whether this logic switching circuit T2 is used for detection signal receiving circuit T1 has the transducing signal input, and converts corresponding transducing signal into switch controlling signal output; And

Signal output apparatus T3; Can the switch controlling signal of logic switching circuit T2 be converted into signal of telecommunication output; And the input of signal output apparatus T3 links to each other with the output of logic switching circuit T2, and the output of this signal output apparatus T3 and the input of speed-regulating control circuit link to each other.

The concrete circuit connection diagram of the signal circuit of present embodiment; As shown in Figure 9; Wherein, Signal receiving circuit T1 is mainly and has 8 sockets the first plug connector P1 of (quantity of socket use according to reality electric-conductor quantity confirm), and the output of different electric-conductors finally is connected in the corresponding socket of this first plug connector P1; Logic switching circuit T2 can pass through control chip or chip microcontroller, and present embodiment has used one group of NAND gate comparator IC1～IC8 and one group of triode Q1～Q8 that is connected on the corresponding NAND gate comparator loop; Signal output apparatus T3 then includes the first voltage-stablizer U1, the second voltage-stablizer U2 and the second plug connector P2;

During work; The second voltage-stablizer U2 obtains voltage through the V end of second plug connector; And the second voltage-stablizer U2 output+5V direct current supplies power for first voltage-stablizer and signal receiving circuit T1, the output voltage that the output end vo ut of the first voltage-stablizer U1 can obtain to change according to the triode conducting situation of logic switching circuit T2; The output end vo ut of the first voltage-stablizer U1 is input in the speed-regulating control circuit through the control end Ctrl of the second plug connector P2, and then realizes rotating speed of motor is controlled; Under the original state, each NAND gate comparator is all exported high level, and triode Q1～Q8 is in the conducting ground state, and at this moment, the output end voltage of the first voltage-stablizer U1 is zero; When the electrolyte among the second chamber B arrives the certain liquid level height, suppose that existing four conduction elements are immersed in the electrolyte, so; Corresponding 1～4 socket of the first plug connector P1 has transducing signal output; NAND gate comparator IC1～IC4 obtains distinguishing output low level behind the corresponding transducing signal, and at this moment, triode Q1～Q4 ends; The collector terminal of triode Q1～Q4 is respectively high potential; The first voltage-stablizer U1 produces the correspondent voltage value at output, and this magnitude of voltage is input to speed-regulating control circuit through the control end Ctrl of the second plug connector P2, and then the control rotating speed of motor.

Present embodiment utilizes the state equation of perfect gas: the PV=nRT formula; Also have liquid pressure formula: P=ρ gh, the first chamber A in the sensor body seat 1 and the second chamber B form a linker, under no flue pressure state; Two interior atmospheric pressures of cavity are P1=P2; Liquid pressures in two cavitys are P3=P4, i.e. P1+P3=P2+P4, and first cavity is equal with the liquid level of the second chamber B; When flue pressure changed, flue pressure acted on the liquid level of first cavity through air inlet 11, produced pressure Δ P, and this moment is because P1+P3+ Δ P＞P2+P4; In order to keep the pressure equilibrium of two cavitys, the liquid level in the second chamber B rises and produces pressure is the liquid level difference of P0, when reaching stable state; P1+P3+ Δ P=P2+P4+P0, i.e. Δ P=P0=ρ gh, here; ρ represents the density of electrolyte, and h represents the liquid level difference height of the first chamber A and the second chamber B, and different pressures can produce differing heights h; Feed back to control circuit through the current potential detection part,, can calculate the force value in corresponding public air channel through the conversion of control circuit; And then set the adjustment motor speed according to corresponding program and export according to the air quantity of demarcating is stable, reach smooth and easy smoke evacuation, effectively improve the environment for use of indoor lampblack absorber.

Present embodiment changes the self adaptation that realizes motor speed through the pressure that detects public air channel to be regulated, simple in structure, easy to use, can reach better smoke discharging effect.

Embodiment two, referring to Figure 10, Figure 11:

The lampblack absorber structure and the embodiment one of present embodiment two are basic identical; The concrete shape of both different are second chamber, exhaust outlets in the sensor; And the mode of communicating of second chamber and exhaust outlet; For to show difference, with a numeral of casting aside, all the other structures still keep the mark identical with embodiment one to the structure that will be different from embodiment one in the present embodiment two in Reference numeral.

The second chamber B ' of present embodiment two is the elongated passageway vertically offered; The cavity of elongated passageway shape has not only been saved electrolyte; And can make that the detection of sensor is sensitive more, in case ambient pressure changes, then obvious variation just can take place in the liquid level among the second chamber B '; Be convenient to more detect, improved detection sensitivity;

In addition, the exhaust outlet 12 ' in the present embodiment two is the blind hole of a top end opening, is communicated with through the passage of laterally offering 15 ' between the second chamber B ' and the exhaust outlet 12 ', and passage 15 ' is opened in the position near the second chamber B ' top;

Wherein, exhaust apparatus includes top cover 4 ', the push rod 5 ' and spring 6 ' that is placed in the exhaust outlet 12 ', and an end of spring 6 ' and the bottom of exhaust outlet 12 ' offset, and the other end of spring 6 ' and the bottom of push rod 5 ' offset; Top cover 4 ' is fixedly set in (both are tight fit) in the top end opening of exhaust outlet 12 ', and top cover 4 ' offers a through hole 43 ' vertically; The top cover 4 ' is here formed a check valve with push rod 5 ', when push rod 5 ' under the vertical state of forward (normal operating conditions), can form the gap of supplied gas discharge between the top of push rod 5 ' and the bottom of top cover 4 ' all the time; When push rod 5 ' be inverted or heeling condition under, spring 6 ' has and drives push rod 5 ' and its top is offseted all the time and the trend of sealing through hole 43 ' with the bottom of top cover 4 ', after push rod 5 ' is sealed through hole 43 ', just can prevent that electrolyte from flowing out from exhaust outlet.

Claims

1. but the lampblack absorber regulated of a rotation speed of fan self adaptation; Include the lampblack absorber housing, be arranged at motor in this lampblack absorber housing and the speed-regulating control circuit that can control said motor speed; Wherein, Said motor links to each other with air outlet through discharge duct, and said air outlet is connected with public flue, it is characterized in that: described lampblack absorber also is provided with one can detect the sensor that said public flue pressure changes; The induction output of said sensor and the input of said speed-regulating control circuit link to each other, and the output of this speed-regulating control circuit links to each other with said motor.

2. but the lampblack absorber that rotation speed of fan self adaptation according to claim 1 is regulated; It is characterized in that: described sensor includes noumenal seat (1), cuts apart in the said noumenal seat (1) to form first chamber (A) and second chamber (B, B ') that is interconnected; Said first chamber (A) and the second chamber (B; B ') be equipped with electrolyte in, the overhead height of said second chamber (B, B ') is greater than the overhead height of said first chamber (A); Wherein, offer air inlet (11) and exhaust outlet (12,12 ') on the said noumenal seat (1), said air inlet (11) and said first chamber (A) are connected, and are provided with the pressure conduction device that can be connected with said air outlet in this air inlet (11); Said exhaust outlet (12,12 ') and said second chamber (B, B ') are connected; This exhaust outlet (12; 12 ') be provided with exhaust apparatus in, and, the said second chamber (B; B ') also be provided with the current potential detection part that can detect electrolyte height in this chamber in, the induction output of said current potential detection part and the input of said speed-regulating control circuit link to each other.

3. but the lampblack absorber that rotation speed of fan self adaptation according to claim 2 is regulated, it is characterized in that: the height difference at described second chamber (B, B ') top and first chamber (A) top is greater than 30mm.

4. but the lampblack absorber that rotation speed of fan self adaptation according to claim 2 is regulated; It is characterized in that: described pressure conduction device is one to plug and the cylindrical rod member (3) of axial limiting in said air inlet (11), and said cylindrical rod member (3) offers the inlet channel (31) that connects vertically.

5. but the lampblack absorber that rotation speed of fan self adaptation according to claim 4 is regulated; It is characterized in that: the inlet channel (31) of said cylindrical rod member (3) is formed with air pressure tap (32) in the bottom, the pore size of described air pressure tap (32) is 1～10mm.

6. but the lampblack absorber that rotation speed of fan self adaptation according to claim 4 is regulated; It is characterized in that: the top of said cylindrical rod member (3) is formed with air pressure and inserts hole (33); This air pressure inserts hole (33) and can link to each other with said air outlet with the air inlet pipe that said public flue is connected through one; The lateral wall of said cylindrical rod member (3) is along circumferentially forming the radially spacing snap ring (34) of evagination, and said spacing snap ring (34) offsets and realizes the axial limiting of said cylindrical rod member (3) in this air inlet (11) with air inlet (11) upper surface of said noumenal seat (1).

7. but the lampblack absorber that rotation speed of fan self adaptation according to claim 4 is regulated, it is characterized in that: the spacing distance between the inner bottom surface of the bottom of said cylindrical rod member (3) and said first chamber (A) is 5～30mm.

But 8. the lampblack absorber that rotation speed of fan self adaptation according to claim 2 is regulated, it is characterized in that: said second chamber (B) includes left half cavity and right half chamber that is interconnected, and the overhead height in half chamber, the said right side is greater than the overhead height of said left half cavity; Wherein, said exhaust outlet (12) is opened in the top, half chamber, the right side of said second chamber (B), and this exhaust outlet (12) is the Vertical Channel of a both ends open and connection, and the bottom end opening of said exhaust outlet (12) is formed with step surface (121); Also be communicated with through the passage of laterally offering (15) between the left half cavity of said second chamber (B) and the said exhaust outlet (12), said passage (15) is opened in the position near said left half cavity top.

9. but the lampblack absorber that rotation speed of fan self adaptation according to claim 8 is regulated; It is characterized in that: described exhaust apparatus includes top cover (4), push rod (5), spring (6) and the base (7) that is placed in the said exhaust outlet (12); Wherein, The bottom of said base (7) and said step surface (121) offset, and said base (7) offers the pore (71) that runs through vertically; One end of said spring (6) is arranged on the said base (7), and the bottom of the other end of this spring (6) and said push rod (5) offsets; Said top cover (4) is fixedly set in the top end opening of said exhaust outlet (12); This top cover (4) offers a through hole (43) vertically; Said push rod (5) can form the gap that supplied gas is discharged all the time between the bottom of the top of said push rod (5) and said top cover (4) under the vertical state of forward; Said push rod (5) be inverted or heeling condition under, said spring (6) has and drives said push rod (5) and its top is offseted all the time and the trend of sealing said through hole (43) with the bottom of said top cover (4).

10. but the lampblack absorber that rotation speed of fan self adaptation according to claim 2 is regulated is characterized in that: said second chamber (B ') is the elongated passageway vertically offered, and said exhaust outlet (12 ') is the blind hole of a top end opening; Be communicated with through the passage of laterally offering (15 ') between said second chamber (B ') and the said exhaust outlet (12 '), said passage (15 ') is opened in the position near said second chamber (B ') top.

11. but the lampblack absorber that rotation speed of fan self adaptation according to claim 10 is regulated; It is characterized in that: described exhaust apparatus includes top cover (4 '), push rod (5 ') and the spring (6 ') that is placed in the said exhaust outlet (12 '); Wherein, One end of said spring (6 ') and the bottom of said exhaust outlet (12 ') offset, and the bottom of the other end of this spring (6 ') and said push rod (5 ') offsets; Said top cover (4 ') is fixedly set in the top end opening of said exhaust outlet (12 '); This top cover (4 ') offers a through hole (43 ') vertically; Said push rod (5 ') can form the gap that supplied gas is discharged all the time between the bottom of the top of said push rod (5 ') and said top cover (4 ') under the vertical state of forward; Said push rod (5 ') be inverted or heeling condition under, said spring (6 ') has and drives said push rod (5 ') and its top is offseted all the time and the trend of sealing said through hole (43 ') with the bottom of said top cover (4 ').

12. but the lampblack absorber that rotation speed of fan self adaptation according to claim 2 is regulated; It is characterized in that: described potential detection device includes a plurality of be parallel to each other and along the electric conductor (8) that is provided with at interval of vertical height direction of said second chamber (B), the output of each said electric conductor (8) links to each other with described speed-regulating control circuit through a signal circuit.

13. but the lampblack absorber that rotation speed of fan self adaptation according to claim 12 is regulated; It is characterized in that: the sidewall of described second chamber (B) vertically offers the installing hole (14) that is provided with at interval; Described electric conductor (8) is a conduction copper column; Said conduction copper column plugs and is fixed in the corresponding said installing hole (14); And an end of each said conduction copper column is arranged in said second cavity volume, and the other end of each said conduction copper column exposes to outside the said noumenal seat (1) output as said electric conductor (8).

But 14. the lampblack absorber that rotation speed of fan self adaptation according to claim 12 is regulated, it is characterized in that: described signal circuit includes

Signal receiving circuit (T1), the output of each said electric conductor (8) is connected the input of this signal receiving circuit (T1);

Logic switching circuit (T2); Be connected the output of said signal receiving circuit (T1); Whether this logic switching circuit (T2) is used to detect said signal receiving circuit (T1) has the transducing signal input, and converts corresponding transducing signal into switch controlling signal output; And

Signal output apparatus (T3); Can the switch controlling signal of said logic switching circuit (T2) be converted into signal of telecommunication output; And; The input of said signal output apparatus (T3) links to each other with the output of said logic switching circuit (T2), and the output of this signal output apparatus (T3) and the input of said speed-regulating control circuit link to each other.

But 15. the lampblack absorber of regulating according to the described rotation speed of fan self adaptation of arbitrary claim in the claim 2～14, it is characterized in that: described noumenal seat also is provided with the fixture that is used for said sensor installing and locating on (1).

16. but the lampblack absorber that rotation speed of fan self adaptation according to claim 15 is regulated; It is characterized in that: described fixture is a stamping forming plate (9); This plate (9) is fixedly connected on the said noumenal seat (1) through screw; Said fixture includes two flanks (91) that can be respectively recline mutually with installed surface, offers connecting hole (911) on each said flank (91).

But 17. the lampblack absorber of regulating according to the described rotation speed of fan self adaptation of arbitrary claim in the claim 2～14, it is characterized in that: described noumenal seat (1) also offers inlet (13), is connected with detachable end (2) on the said inlet (13).