CN105333474A - Shared oil smoke emission vertical pipe system and control method thereof - Google Patents
Shared oil smoke emission vertical pipe system and control method thereof Download PDFInfo
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- CN105333474A CN105333474A CN201510567961.5A CN201510567961A CN105333474A CN 105333474 A CN105333474 A CN 105333474A CN 201510567961 A CN201510567961 A CN 201510567961A CN 105333474 A CN105333474 A CN 105333474A
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Abstract
The invention relates to a shared oil smoke emission vertical pipe system and a control method thereof. The shared oil smoke emission vertical pipe system comprises a controller, oil smoke exhausters, frequency convertors, an oil smoke emission vertical pipe and a plurality of oil smoke emission horizontal pipe assemblies. Oil smoke emission horizontal pipes are connected with the oil smoke emission vertical pipe through electric air valves. Starting switches and actuators are all electrically connected with the controller. The electric air valves are connected with one ends of constant air volume valves. The other ends of the constant air volume valves are connected with the oil smoke emission horizontal pipes. The oil smoke exhausters are connected with the controller through the frequency convertors. The starting switches are used for sending starting signals to the controller. The controller is used for controlling the electric air valves to open after receiving the starting signals, and the running air volumes of the oil smoke exhausters are controlled through the frequency convertors. According to the shared oil smoke emission vertical pipe system, the oil smoke emission vertical pipe is shared by the oil smoke emission horizontal pipe assemblies, and through controlling of the controller and the frequency convertors over the oil smoke exhausters, the oil smoke emission requirements for the oil smoke emission vertical pipe shared by the oil smoke emission horizontal pipe assemblies are met, and full-automatic intelligent control is achieved.
Description
Technical field
The present invention relates to kitchen discharged lampblack technical field, particularly relate to shared mist extractor riser systems and control method thereof.
Background technology
Negative pressure operating mode is necessary in the kitchen of catering industry, general negative pressure value is advisable about 5 to 10pa, generally there is multiple food and drink kitchen, the particularly hotel of multilayer or large scale business synthesis, normally every floor is provided with kitchen separately, due to architecture indoor space closely, and cooking apparatus and pipeline numerous, be subject to highly waiting restriction simultaneously, if by the past independent mist extractor process is carried out to each kitchen, often cause the waste in high value space, thus employing is centralized usually unifies oil smoke discharge process by roof, but, now commercially there are not suitable equipment and measure can realize sharing mist extractor standpipe mode to multiple kitchen and carry out full-automatic intelligent control.
Summary of the invention
For above-mentioned technical problem, the shared mist extractor riser systems that an object of the present invention is to provide a kind of can realize economical and energy saving, full-automatic intelligent controls.
One of for achieving the above object, the present invention adopts following technical scheme:
Share mist extractor riser systems, comprise controller, mist extractor blower fan, frequency converter, mist extractor standpipe and multiple mist extractor horizontal tube assembly, described mist extractor horizontal tube assembly comprises a valve member and mist extractor horizontal tube, and described valve member comprises at least one starting switch, an Electric air valve and one determine air quantity valve; Electric air valve is furnished with actuator, described mist extractor horizontal tube is connected with mist extractor standpipe with Electric air valve by determining air quantity valve, described starting switch and actuator are all electrically connected with controller, described Electric air valve connects the one end of determining air quantity valve, the other end determining air quantity valve connects mist extractor horizontal tube, and described mist extractor blower fan is connected with controller by frequency converter; Described starting switch, for sending start signal to controller; Described controller, controls Electric air valve unlatching, and passes through the operation air quantity of Frequency Converter Control mist extractor blower fan after receiving start signal.
Preferably, the described quantity of mist extractor blower fan and the quantity of frequency converter are two.
Preferably, described starting switch is infrared-sensing type switch.
Preferably, described mist extractor standpipe is provided with pressure sensor, described pressure sensor, sends static pressure signal to controller after the static pressure on mist extractor standpipe being detected, is run by Frequency Converter Control mist extractor blower fan to make controller with corresponding frequency.
Two of object of the present invention is to provide a kind of control method being applied to shared mist extractor standpipe, and it comprises the steps:
Step one: the starting switch of a certain floor opens the rear start signal that sends to controller;
Step 2: controller controls Electric air valve and opens after receiving start signal, and passes through the operation air quantity of Frequency Converter Control mist extractor blower fan.
Preferably, described step 2 specifically comprises following sub-step:
Step 21: controller controls Electric air valve and opens after receiving start signal;
Step 22: controller accounts for the ratio of specified total mist extractor air quantity according to the mist extractor air quantity of this floor preset and this floor mist extractor air quantity, computing also judges that now mist extractor standpipe adds up to mist extractor air quantity whether to be greater than 49.99% of specified total mist extractor air quantity, if, then controller is run by corresponding frequency by Frequency Converter Control two mist extractor blower fans simultaneously, otherwise, controller only by wherein Frequency Converter Control wherein a mist extractor blower fan run with corresponding frequency.
Preferred further, described step 22 specifically comprises following sub-step:
Step 22a: the ratio that the specified mist extractor air quantity of definition two mist extractor blower fans is respectively Qdy1 and Qdy2, specified total mist extractor air quantity of two mist extractor blower fans is ∑ Qdy, separate unit mist extractor blower fan specified mist extractor air quantity accounts for specified total mist extractor air quantity is respectively Bdy1 and Bdy2, i.e. ∑ Qdy=Qdy1+Qdy2, and Qdy1=Qdy2, then Bdy1=Bdy2=Qdy1 ÷ ∑ Qdy × 100%=50%; The mist extractor air quantity in a certain floor kitchen is Qlyn, and the ratio that the mist extractor air quantity in a certain floor kitchen accounts for specified total mist extractor air quantity is Blyn, i.e. Blyn=Qlyn ÷ ∑ Qdy × 100%; The mist extractor air quantity in all floor kitchens is ∑ Qly, then ∑ Qly=Qly1+Qly2 ... + Qlyn, all floor kitchens add up to mist extractor air quantity to account for the ratio of specified total mist extractor air quantity, namely the ratio that mist extractor standpipe adds up to mist extractor air quantity to account for specified total mist extractor air quantity is ∑ Bly, i.e. ∑ Bly=Bly1+Bly2 ... + Blyn, wherein n is total number of floor levels, and ∑ Qdy >=∑ Qly;
Step 22b: judge whether the ratio ∑ Bly that mist extractor standpipe adds up to mist extractor air quantity to account for specified total mist extractor air quantity is greater than 49.99%, if, i.e. ∑ Bly >=49.99%, controller is run by corresponding frequency by Frequency Converter Control two mist extractor blower fans simultaneously; Otherwise, i.e. ∑ Bly≤49.99%, controller directly by wherein Frequency Converter Control wherein a mist extractor blower fan run with corresponding frequency.
Preferably, described mist extractor standpipe is provided with pressure sensor, described pressure sensor, sends static pressure signal to controller after the static pressure on mist extractor standpipe being detected, is run by Frequency Converter Control mist extractor blower fan to make controller with corresponding frequency.
Compared to existing technology, beneficial effect of the present invention is:
In the present invention, multiple mist extractor horizontal tube assembly shares a mist extractor standpipe, by controller, frequency converter and mist extractor fan linkage, the mist extractor meeting multiple mist extractor horizontal tube runs, and realizes the omnidistance intelligentized control method automatically identifying, automatically run, automatically regulate.
Accompanying drawing explanation
Fig. 1 is the module frame chart of the shared mist extractor riser systems of the embodiment of the present invention;
Fig. 2 is the structural representation of the shared mist extractor riser systems of the embodiment of the present invention;
Fig. 3 is the structural representation of the exhaust blower of the embodiment of the present invention, pressure fan, fresh air air conditioner for machine;
Fig. 4 is exhaust blower, pressure fan, the fresh air air conditioner for machine operating diagram of the embodiment of the present invention;
Fig. 5 is A partial enlarged drawing in Fig. 4;
Fig. 6 is B partial enlarged drawing in Fig. 4;
Fig. 7 is C partial enlarged drawing in Fig. 4;
Fig. 8 is D partial enlarged drawing in Fig. 4;
Fig. 9 is E partial enlarged drawing in Fig. 4;
Figure 10 is the control method flow chart being applied to mist extractor standpipe of the embodiment of the present invention.
Detailed description of the invention
Below, by reference to the accompanying drawings and detailed description of the invention, the present invention is described further:
See Fig. 1 and Fig. 2, the shared mist extractor riser systems that the embodiment of the present invention provides, comprise controller, mist extractor blower fan, frequency converter, mist extractor standpipe and multiple mist extractor horizontal tube assembly, mist extractor horizontal tube assembly comprises a valve member and mist extractor horizontal tube.Mist extractor horizontal tube in each kitchen comprises one or more snippets.Wherein, in fig. 2, mist extractor standpipe is arranged in figure right side, and the thick vertical line be connected with quantitative air-valve and motor-driven valve by right side in figure represents.
The shared mist extractor riser systems of the present embodiment can be applicable to the hotel and large scale business synthesis etc. with multiple kitchen, suppose certain hotel having multilayer annex, every layer of annex is provided with a kitchen, then be provided with a mist extractor horizontal tube assembly in each kitchen, namely each kitchen is provided with valve member and mist extractor horizontal tube, the mist extractor horizontal tube in each kitchen converges and is connected with mist extractor standpipe with Electric air valve by determining air quantity valve afterwards, mist extractor standpipe is that all kitchens, whole hotel share, be intended to realize Automatic Control, effective discharge and the object efficiently managed.
Valve member comprises at least one starting switch, an Electric air valve and one determine air quantity valve; Electric air valve is furnished with actuator, and starting switch and actuator are all electrically connected with controller, and mist extractor blower fan is connected with controller by frequency converter.One or more snippets mist extractor horizontal tube is installed in a kitchen, usually be provided with in general each kitchen and organize burner more, the usual correspondence of oil exit pipe horizontal tube end is positioned at the top of burner, often organize burner correspondence and be configured with one or more starting switch, the actuator of each starting switch and motor-driven valve is all be electrically connected with controller, starting switch is for sending start signal to controller, the logical relation of all starting switches be or, namely any one starting switch is pressed or sensed triggering, controller can be allowed to control Electric air valve open, mist extractor horizontal tube after converging to make this kitchen is communicated with oil exit pipe standpipe.Above-mentioned starting switch can be the common starting switch of hand, or with enclosure switch gearing, the present embodiment is preferably infrared-sensing type switch, automatically triggers start signal when it senses the heat of user or stove at head of furnace.Determining air quantity valve is control mist extractor air quantity, for setting the specified mist extractor air quantity allowing mist extractor horizontal tube.
For controller, frequency converter and mist extractor standpipe, when floor starting switch is opened, send start signal to controller, after controller receives the start signal from starting switch, first identify the floor address of this starting switch, then the Electric air valve controlling this floor is opened, then calculates the ratio value of mist extractor air quantity of this floor and mist extractor standpipe adds up to mist extractor air quantity ratio value, and by frequency converter setting mist extractor fan operation frequency.Concrete, be preset with the mist extractor air quantity of corresponding each floor in controller and account for the ratio of specified total oil extraction smoke which, controller can judge specifically from the starting switch of which layer according to start signal, and according to preset this floor mist extractor air quantity and account for specified total mist extractor value ratio operation result setting frequency converter operating frequency, thus control mist extractor blower fan runs with suitable air quantity, if now the valve member of existing multiple floor is opened, controller is just according on original required operating frequency basis corresponding to mist extractor air quantity, first computing judges that mist extractor standpipe total mist extractor air quantity adds whether newly-increased mist extractor air quantity is greater than 49.99% of specified total mist extractor air quantity, be, just maintain two or increase unlatching mist extractor blower fan, otherwise, only control frequency converter lifting operating frequency and increase the corresponding air quantity of mist extractor blower fan, final realization control mist extractor blower fan is operated on most suitable mist extractor air quantity and runs.Controller judges that starting switch is can identifying according to the port id coding of starting switch of which layer, and this technology obtains by existing mature technology and realizes.
Mist extractor standpipe connect each floor converge after mist extractor horizontal tube, one end is arranged at roof, oil smoke discharge process is carried out by mist extractor blower fan at roof, in the present embodiment, mist extractor blower fan is preferably set to multiple stage, such as two, and corresponding frequency converter quantity is consistent with the quantity of mist extractor blower fan, be similarly two, its concrete quantity can be configured according to the actual requirements.
Valve member comprises the starting switch, the Electric air valve that associate each other and determines air quantity valve, and Electric air valve is made up of valve body and actuator; Actuator is all connected with controller with starting switch, and Electric air valve connects the one end of determining air quantity valve, and the other end determining air quantity valve connects the mist extractor horizontal tube after converging, and Electric air valve is controlled to open according to the start signal of starting switch by controller.
The present embodiment is for 5 floors altogether, each floor all has kitchen, each floor kitchen has many group burners and enclosure, concrete numerical value can configure according to actual needs, the enclosure of each group corresponding to burner all configures one or more starting switch, any one starting switch is pressed or is triggered, and all can send start signal to controller, and controller controls corresponding Electric air valve thereupon and opens.Rightmost shown in Fig. 2 is mist extractor standpipe, above each enclosure is mist extractor horizontal tube, each enclosure is pooled to the valve body determining air quantity valve and Electric air valve by mist extractor horizontal tube, finally be connected with mist extractor standpipe, after Electric air valve is opened, all enclosures of this floor are just communicated with mist extractor standpipe by mist extractor horizontal tube, realize by enclosure to mist extractor standpipe discharge oil smoke thereupon.
Preset each floor mist extractor air quantity by controller and calculate the ratio that it accounts for specified total mist extractor value, realizing carrying out a step-by-step movement frequency adjustment to frequency converter and control, the final mist extractor blower fan that controls runs by corresponding stepping air quantity change.The present embodiment is preferably provided with pressure sensor on mist extractor standpipe, pressure sensor, static pressure signal is sent to controller after the static pressure on mist extractor standpipe being detected, run with corresponding frequency by Frequency Converter Control mist extractor blower fan to make controller, namely controller regulates the operating frequency of frequency converter according to pressure, and final control mist extractor fan operation pressure head meets the static pressure set by mist extractor riser systems.The control and regulation of setting static pressure are maintained by pressure sensor, what realize is the meticulous adjustment of dynamic following formula to mist extractor blower fan, the mist extractor air quantity demand different according to each floor can produce different air-supply pressure heads, both are non-linear relation, need to revise adjustment accordingly, suitable operating frequency is provided to control mist extractor fan operation to make frequency converter, overcome change in resistance and fluctuating error that system dynamically produces, guarantee that mist extractor standpipe can meet the operation demand from single floor to whole floor kitchen discharged lampblack operating mode, the inequality step-by-step movement frequency conversion Boiler pressure control achieving different floor different mist extractor air quantity demand adds the double control pattern of constant static-pressure pressure follow control, the combination of these two kinds of control models, define the Dynamic matrix control means of air quantity and the complementary trailing type double control of pressure.
Further illustrate for two mist extractor blower fans: inequality step-by-step movement frequency conversion Boiler pressure control is the preferential large Variable Control means of slewing performed, as long as any one starting switch of floor is opened arbitrarily, start signal is sent to controller, controller is just according to the port address of this floor kitchen starting switch preset, the Electric air valve controlling this floor is opened, simultaneously according to this kitchen discharged lampblack air quantity preset and corresponding ratio, first computing judges now to need the mist extractor air quantity increased to add the mist extractor air quantity that mist extractor standpipe is running, whether be greater than 49.99% of specified total mist extractor air quantity, if, then run two mist extractor blower fans, otherwise on the basis of a mist extractor air quantity of former operation, the operating frequency one step increase controlling frequency converter puts in place, mist extractor blower fan is directly made to increase mist extractor air quantity needed for this floor.Otherwise, when all starting switches of any floor are closed, after this floor Close All signal delivers to controller, controller cuts out the Electric air valve of corresponding floor, the mist extractor air quantity that simultaneously computing mist extractor standpipe is running again deducts the result after the mist extractor air quantity that this floor presets, and judge whether this result is greater than 49.99% of specified total mist extractor air quantity, is, maintain two mist extractor blower fans and continue to run, only reduce the mist extractor air quantity that this floor is corresponding; If not, as being two mist extractor blower fans before in operation, then closing a mist extractor blower fan and recalculate the operation air quantity of separate unit mist extractor blower fan, as only having a mist extractor fan operation before, then reducing the mist extractor air quantity of corresponding floor on this basis.The present invention allows the mist extractor air quantity of each floor can not be identical, therefore the step value settled at one go of mist extractor air quantity that increases of corresponding each floor is just different, this pattern can a step just make frequency converter be operated on the required Frequency point increasing air quantity of mist extractor blower fan, overcoming the general Boiler pressure control pattern that progressively increases needs the first small size operating frequency that increases then to wait for feedback check, and then slightly increase operating frequency and the cyclic process of feedback check and time delay again, improve the speed of control, efficiency and accuracy.But, although require that each floor mist extractor horizontal tube is all equipped with to determine air quantity valve, realize the mist extractor wind power balance of each floor, but, because the increase and decrease of mist extractor fan delivery and the increase and decrease of air-supply pressure head are non-linear relation, invention introduces the pattern that mist extractor standpipe constant static-pressure value model-following control regulates mist extractor fan delivery, this control model is after completing inequality step-by-step movement Boiler pressure control and regulating, the static pressure changing value detected by pressure sensor again controls to adjust the operating frequency of same frequency converter, the air quantity that stepping is increased obtains relative correction and adjustment with the air-supply pressure head of required increase, this correction regulating parameter need detect data by the debugging at scene, and carry out corrected Calculation in conjunction with the actual error of the air quantity after frequency conversion and pressure head by controller, its corrected Calculation result stores in the controller and supplies to call, realize regulating the correction of frequency converter operating frequency.
Kitchen is except there being mist extractor demand, also need to tackle various heat-producing device to need to carry out intermittent ventilation and heat or continuation ventilation and heat, and the common air-supply to configure for the requirement meeting kitchen negative pressure, the fresh air conditioner operating condition also having position to solve working environment to configure.Therefore, in the present embodiment, return each floor and be respectively arranged with exhaust blower, common pressure fan and fresh air air conditioner for machine, specifically see Fig. 3, in Fig. 3, the thick lines direction of arrow represents the flow direction of air-flow, the position of corresponding enclosure is above the burner in kitchen, accordingly, its concrete structure and control mode are as shown in Figure 2, each floor is all provided with an exhaust blower, common pressure fan and fresh air air conditioner for machine, exhaust blower is used for air in kitchen and outside air are circulated, common blower-use is in blowing to kitchen, keep in kitchen with the draught head in the external world within the specific limits, the air outlet of fresh air air conditioner for machine is generally arranged on the relevant position corresponding to burner, the operating position of usual staff is near burner, and temperature is warmmer, cold airflow is produced by fresh air air conditioner for machine, for staff provides comfortable environment.In order to the coordinated operation automatically realizing the said equipment further controls, exhaust blower, common pressure fan, fresh air air conditioner for machine can respectively by Frequency Converter Control, each floor can arrange a floor controller, floor controller is for controlling frequency converter work, floor controller can according to the time of presetting or other parameters, the opening and closing of conservative control exhaust blower, common pressure fan, fresh air air conditioner for machine and operating condition.
For exhaust blower, common pressure fan, fresh air air conditioner for machine, specifically how intelligent operation controls, can see Fig. 4 to Fig. 9, and the corresponding kitchen of each floor, 1 layer of kitchen is Stall kitchen, and 2 layers of kitchen are second floor kitchen, and 3 floor kitchen are 3rd floors kitchens, by that analogy.Each floor all possesses a floor controller, the controller module that this floor controller can be respectively used to control the exhaust blower of this floor, common pressure fan and fresh air air conditioner for machine by three formed, in addition, the exhaust blower of floor, common pressure fan, fresh air conditioner regulate air quantity by supporting frequency converter respectively.The control of exhaust blower: detect the temperature value in kitchen by temperature of outgoing air sensor, this sensor sends temperature signal to air exhaust controller, thus run with corresponding frequency by Frequency Converter Control exhaust blower according to this temperature signal by air exhaust controller, regardless of any duty of other equipment in kitchen, exhaust blower only controls by the temperature value in kitchen, automatically regulates exhaust air rate by temperature value.The control of common pressure fan: the negative pressure value being detected kitchen indoor and outdoor by differential pressure pickup, and the negative pressure value detected is sent to air blowing control device, thus opened by air blowing control device according to this negative pressure value control frequency converter and regulate the operating frequency of common pressure fan, door status switch is installed on backstairs, when backstairs is opened, trigger gate magnetic switch disconnects, backstairs is opened and indoor and outdoor pressure reduction can be caused to change, now door status switch sends door start signal to air blowing control device, with the negative pressure value change fluctuation making air blowing control device ignore differential pressure pickup detection in Preset Time, thus the normal work of pressure fan can not be affected because backstairs opens, this Preset Time can set according to actual conditions, such as be set as 1 minute, namely after the start signal receiving door status switch in 1 minute, the change of negative pressure value ignored automatically by air blowing control device.The control of fresh air air conditioner for machine: send after infrared excess sound wave two prison probe is used for user to work position having been detected and put signal in place to fresh air conditioner controller, thus the Electric air valve unlatching of ajutage is first controlled by this fresh air conditioner controller, then control fresh air air conditioner for machine to open, by the acting in conjunction of two kinds of induction modes of the two prison probe of infrared excess sound wave, can judge whether that user arrives work position more accurately and reliably, to make fresh air conditioner controller open the air-supply Electric air valve of this position, make the station air supply air port conveying air-conditioning cold wind in this region, the temperature sensor in work position is for the variations in temperature signal that detects in kitchen near work position and send variations in temperature signal to fresh air conditioner controller, to make fresh air conditioner controller according to the leaving air temp of this variations in temperature Signal Regulation fresh air air conditioner for machine, fresh air conditioner pressure sensor goes out wind pressure for what detect kitchen fresh air conditioner ajutage, and pressure signal is sent to fresh air conditioner controller, this controller again according to actual measurement force value and preset force value relatively after, go the operating frequency regulating frequency converter, guarantee that fresh air air conditioner for machine provides suitable air quantity according to the quantity that air outlet is opened, you need to add is that, after the personnel in work position leave work, the two prison probe of infrared excess sound wave stops transmission putting in place signal, after fresh air conditioner controller detects the disappearance of this signal that puts in place, still the signaling protein14-3-3 that puts in place is not found that there is after 5 minutes through time delay, just close the ajutage Electric air valve in this region, stop to unmanned post transporting cold wind, delay time can need adjustment according to real work.
See Figure 10, the present embodiment also provides a kind of control method being applied to shared mist extractor standpipe, and it is as follows that it comprises step:
Step s1: the starting switch of a certain floor sends start signal to controller;
Step s2: controller controls Electric air valve and starts after receiving start signal, and passes through the operation air quantity of Frequency Converter Control mist extractor blower fan.
For step s2, it completes jointly primarily of following sub-step:
Step 21: controller controls Electric air valve and opens after receiving start signal;
Step 22: controller accounts for the ratio of specified total mist extractor air quantity according to the mist extractor air quantity of this floor preset and this floor mist extractor air quantity, computing also judges that now mist extractor standpipe adds up to mist extractor air quantity whether to be greater than 49.99% of specified total mist extractor air quantity, if, then controller is run by corresponding frequency by Frequency Converter Control two mist extractor blower fans simultaneously, otherwise, controller only directly by wherein Frequency Converter Control wherein a mist extractor blower fan run with corresponding frequency.
The control method of the present embodiment adopts the pattern of double controlling of inequality step-by-step movement frequency conversion Boiler pressure control and the control of constant static-pressure pressure follow.Inequality step-by-step movement frequency conversion Boiler pressure control pattern: as long as the starting switch of floor is opened arbitrarily, start signal can be sent to the controller of roof, controller first identifies the port address of this floor starting switch, then the Electric air valve controlling this floor is opened, obtain the default specified mist extractor air quantity in this floor kitchen simultaneously, afterwards, after controller computing increases this floor kitchen discharged lampblack air quantity newly, judge the mist extractor air quantity that mist extractor standpipe adds up to, if when being greater than 49.99% of specified total mist extractor air quantity, open two mist extractor blower fans, otherwise, the operating frequency one step joint that the basis of a former operation smoke exhaust directly controls frequency converter puts in place, mist extractor blower fan is directly made to increase this mist extractor air quantity needed for floor kitchen.The mist extractor air quantity of each floor of the present embodiment is different, this control model can a step make frequency converter be operated on the required Frequency point increasing air quantity of mist extractor blower fan, overcoming the general Boiler pressure control pattern that progressively increases needs the first small size operating frequency that increases then to wait for feedback check, and then slightly increase operating frequency and the cyclic process of feedback check and time delay again, improve the speed of control, efficiency and accuracy.Constant static-pressure pressure follow control model: mist extractor standpipe is provided with pressure sensor, pressure sensor, static pressure signal is sent to controller after the static pressure on mist extractor standpipe being detected, with the operating frequency making controller regulate frequency converter, final control mist extractor fan operation pressure head meets the static pressure set by mist extractor riser systems, what realized by pressure sensor is the meticulous adjustment of dynamic following formula to mist extractor blower fan, the mist extractor air quantity demand different according to each floor can produce different air-supply pressure heads, both are non-linear relation, need to revise adjustment accordingly, this correction regulating parameter need detect data by the debugging at scene, and carry out corrected Calculation in conjunction with the actual error of the air quantity after frequency conversion and pressure head by controller, its corrected Calculation result stores in the controller and supplies to call, realize regulating the correction of frequency converter operating frequency, suitable operating frequency is provided to control mist extractor fan operation to make frequency converter, overcome the dynamic change in resistance of system and fluctuating error, guarantee that mist extractor standpipe can meet the operation demand from single floor to whole floor kitchen discharged lampblack operating mode, the combination of these two kinds of control models, define the Dynamic matrix control means of air quantity and the complementary trailing type dual control of pressure.
More specifically, step 22 specifically comprises following sub-step:
Step 22a: the ratio that the specified mist extractor air quantity of definition two mist extractor blower fans is respectively Qdy1 and Qdy2, specified total mist extractor air quantity of two mist extractor blower fans is ∑ Qdy, separate unit mist extractor blower fan specified mist extractor air quantity accounts for specified total mist extractor air quantity is respectively Bdy1 and Bdy2, i.e. ∑ Qdy=Qdy1+Qdy2, and Qdy1=Qdy2, the ratio of separate unit mist extractor blower fan specified mist extractor air quantity and specified total mist extractor air quantity is Bdy1=Bdy2=Qdy1 ÷ ∑ Qdy × 100%=50%, the mist extractor air quantity in a certain floor kitchen is Qlyn, and the ratio that the mist extractor air quantity in a certain floor kitchen accounts for specified total mist extractor air quantity is Blyn, i.e. Blyn=Qlyn ÷ ∑ Qdy × 100%, the mist extractor air quantity in all floor kitchens is ∑ Qly, then ∑ Qly=Qly1+Qly2 ... + Qlyn, all floor kitchens add up to mist extractor air quantity to account for the ratio of specified total mist extractor air quantity, namely the ratio that mist extractor standpipe adds up to mist extractor air quantity to account for specified total mist extractor air quantity is ∑ Bly, i.e. ∑ Bly=Bly1+Bly2 ... + Blyn, wherein n is total number of floor levels, in the present embodiment, the setting of n is no more than 6, as n=6, ∑ Qly=Qly1+Qly2+Qly3+Qly4+Qly5+Qly6, otherwise need additionally to increase mist extractor blower fan again according to actual condition parameter, and ∑ Qdy >=∑ Qly.
Step 22b: computing judges whether the ratio ∑ Bly that mist extractor standpipe adds up to mist extractor air quantity to account for specified total mist extractor air quantity is greater than 49.99%, if, i.e. ∑ Bly >=49.99%, this process is, be set in advance in the mist extractor air quantity that need run in this floor kitchen in controller to be called, comparing with the computing of specified total mist extractor air quantity the ratio result drawn is Blyn, then, add and be in the total mist extractor air quantity ratio that mist extractor runs floor, obtain new ∑ Bly value, when this value is ∑ Bly >=49.99%, need to open operation two mist extractor blower fans.Determine that the operational formula of two mist extractor fan operation air quantity is: (Qdy1k+Qdy2k)=∑ Bly × ∑ Qdy ÷ 2, because two smoke exhausts run identical mist extractor air quantity so now Qdy2k=Qdy1k, subsequently, controller, by Frequency Converter Control two mist extractor blower fans, is pressed operation result simultaneously and is run with identical operating frequency; Otherwise, i.e. ∑ Bly≤49.99%, now, only needs operation mist extractor blower fan, determine that the operational formula of a mist extractor fan operation air quantity is Qdy1k=∑ Blyn × 2 × ∑ Qdy ÷ 2, only need run a mist extractor blower fan and run by the air quantity of operational formula result; In formula, ∑ Bly is that each floor needs the total mist extractor air quantity of shared mist extractor standpipe divided by specified total mist extractor air quantity gained, so when calculating separate unit smoke exhaust nominal air delivery, and Qdy1=Qdy2=∑ Qdy ÷ 2.In formula, the mist extractor air quantity of separate unit mist extractor blower fan actual motion should be less than or equal to its specified mist extractor air quantity, i.e. Qdy1k≤Qdy1, because ∑ Bly is the result compared with ∑ Qdy, so when the left of formula is separate unit mist extractor blower fan Qdy1k, formula right should be ∑ Bly × 2, being equivalent to mist extractor standpipe adds up to mist extractor air quantity divided by the ratio value of a specified mist extractor air quantity of smoke exhaust, then this ratio value is multiplied by the specified mist extractor air quantity of a smoke exhaust again, result is exactly the mist extractor air quantity Qdy1k that separate unit mist extractor blower fan actual needs runs, this Time Controller only by wherein Frequency Converter Control wherein a mist extractor blower fan run with corresponding frequency.
Accordingly, according to actual needs, the quantity of mist extractor blower fan can be multiple stage.The starting switch of floor is preferably infrared-sensing type switch.Mist extractor standpipe is provided with pressure sensor, pressure sensor, sends static pressure signal to controller after the static pressure on mist extractor standpipe being detected, is run by Frequency Converter Control mist extractor blower fan to make controller with corresponding frequency.
In addition, valve member comprises starting switch, Electric air valve and determines air quantity valve, Electric air valve is made up of valve body and actuator, actuator and starting switch are all electrically connected with controller, Electric air valve valve body is connected with the one end of determining air quantity valve, the other end with after mist extractor standpipe direction is converged mist extractor horizontal tube be connected, the other end determine air quantity valve is connected with the mist extractor horizontal tube of close fume exhaust cover, refers to Fig. 2.
In addition, controller can adopt the various brand controller modules of existing mature technology, and frequency converter can adopt the frequency converter supporting with mist extractor blower fan electric property.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the claims in the present invention.
Claims (8)
1. share mist extractor riser systems, it is characterized in that, comprise controller, mist extractor blower fan, frequency converter, mist extractor standpipe and multiple mist extractor horizontal tube assembly, described mist extractor horizontal tube assembly comprises a valve member and mist extractor horizontal tube, and described valve member comprises at least one starting switch, an Electric air valve and one determine air quantity valve; Electric air valve is furnished with actuator, described mist extractor horizontal tube is connected with mist extractor standpipe with Electric air valve by determining air quantity valve, described starting switch and actuator are all electrically connected with controller, described Electric air valve connects the one end of determining air quantity valve, the other end determining air quantity valve connects mist extractor horizontal tube, and described mist extractor blower fan is connected with controller by frequency converter; Described starting switch, for sending start signal to controller; Described controller, controls Electric air valve unlatching, and passes through the operation air quantity of Frequency Converter Control mist extractor blower fan after receiving start signal.
2. shared mist extractor riser systems as claimed in claim 1, it is characterized in that, the described quantity of mist extractor blower fan and the quantity of frequency converter are two.
3. shared mist extractor riser systems as claimed in claim 1, it is characterized in that, described starting switch is infrared-sensing type switch.
4. shared mist extractor riser systems as claimed in claim 1, it is characterized in that, described mist extractor standpipe is provided with pressure sensor, described pressure sensor, after the static pressure on mist extractor standpipe being detected, send static pressure signal to controller, run with corresponding frequency by Frequency Converter Control mist extractor blower fan to make controller.
5. be applied to the control method of shared mist extractor standpipe, it is characterized in that, comprise the steps:
Step one: the starting switch of a certain floor opens the rear start signal that sends to controller;
Step 2: controller controls Electric air valve and opens after receiving start signal, and passes through the operation air quantity of Frequency Converter Control mist extractor blower fan.
6. be applied to the control method of mist extractor standpipe as claimed in claim 5, it is characterized in that, described step 2 specifically comprises following sub-step:
Step 21: controller controls Electric air valve and opens after receiving start signal;
Step 22: controller accounts for the ratio of specified total mist extractor air quantity according to the mist extractor air quantity of this floor preset and the mist extractor air quantity of this floor, computing also judges that now mist extractor standpipe adds up to mist extractor air quantity whether to be greater than 49.99% of specified total mist extractor air quantity, if, then controller is run by corresponding frequency by Frequency Converter Control two mist extractor blower fans simultaneously, otherwise, controller only by wherein Frequency Converter Control wherein a mist extractor blower fan run with corresponding frequency.
7. be applied to the control method of mist extractor standpipe as claimed in claim 6, it is characterized in that, described step 22 specifically comprises following sub-step:
Step 22a: the ratio that the specified mist extractor air quantity of definition two mist extractor blower fans is respectively Qdy1 and Qdy2, specified total mist extractor air quantity of two mist extractor blower fans is ∑ Qdy, separate unit mist extractor blower fan specified mist extractor air quantity accounts for specified total mist extractor air quantity is respectively Bdy1 and Bdy2, i.e. ∑ Qdy=Qdy1+Qdy2, and Qdy1=Qdy2, then Bdy1=Bdy2=Qdy1 ÷ ∑ Qdy × 100%=50%; The mist extractor air quantity in a certain floor kitchen is Qlyn, and the ratio that the mist extractor air quantity in a certain floor kitchen accounts for specified total mist extractor air quantity is Blyn, i.e. Blyn=Qlyn ÷ ∑ Qdy × 100%; The mist extractor air quantity in all floor kitchens is ∑ Qly, then ∑ Qly=Qly1+Qly2 ... + Qlyn, all floor kitchens add up to mist extractor air quantity to account for the ratio of specified total mist extractor air quantity, namely the ratio that mist extractor standpipe adds up to mist extractor air quantity to account for specified total mist extractor air quantity is ∑ Bly, i.e. ∑ Bly=Bly1+Bly2 ... + Blyn, wherein n is total number of floor levels, and ∑ Qdy >=∑ Qly;
Step 22b: judge whether the ratio ∑ Bly that mist extractor standpipe adds up to mist extractor air quantity to account for specified total mist extractor air quantity is greater than 49.99%, if, i.e. ∑ Bly >=49.99%, controller is run by corresponding frequency by Frequency Converter Control two mist extractor blower fans simultaneously; Otherwise, i.e. ∑ Bly≤49.99%, controller only by wherein Frequency Converter Control wherein a mist extractor blower fan run with corresponding frequency.
8. be applied to the control method of mist extractor standpipe as claimed in claim 5, it is characterized in that, described mist extractor standpipe is provided with pressure sensor, described pressure sensor, after the static pressure on mist extractor standpipe being detected, send static pressure signal to controller, run with corresponding frequency by Frequency Converter Control mist extractor blower fan to make controller.
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| CN201510567961.5A CN105333474A (en) | 2015-09-08 | 2015-09-08 | Shared oil smoke emission vertical pipe system and control method thereof |
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| CN201510567961.5A CN105333474A (en) | 2015-09-08 | 2015-09-08 | Shared oil smoke emission vertical pipe system and control method thereof |
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| CN107366635A (en) * | 2017-08-31 | 2017-11-21 | 江西拓宇实业有限公司 | A kind of negative pressure exhaust system and its control method |
| CN107366635B (en) * | 2017-08-31 | 2019-08-27 | 江西拓宇实业有限公司 | A kind of negative pressure exhaust system and its control method |
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