CN113108332A - Method and device for adjusting range hood - Google Patents
Method and device for adjusting range hood Download PDFInfo
- Publication number
- CN113108332A CN113108332A CN202010156883.0A CN202010156883A CN113108332A CN 113108332 A CN113108332 A CN 113108332A CN 202010156883 A CN202010156883 A CN 202010156883A CN 113108332 A CN113108332 A CN 113108332A
- Authority
- CN
- China
- Prior art keywords
- fan
- air volume
- value
- actual
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method and a device for adjusting a range hood, wherein the range hood comprises a fan, and the method for adjusting the range hood comprises the following steps: collecting the air speed of an outlet of a smoke machine and the frequency of a fan, and calculating to obtain an actual value of the air quantity of the fan and the pressure of a common flue; and if the actual value of the air volume of the fan exceeds the set range of the set value of the air volume, calculating the target frequency of the fan according to the actual value of the air volume of the fan, the set value of the air volume and the pressure of the common flue, and adjusting the fan. In the invention, when a user uses the cigarette machine, the frequency of the cigarette machine is controlled through wind speed feedback sensing to realize constant and effective air volume adjustment, and the air volume adjustment of the fan can be realized no matter how the load of the environment where the cigarette machine is located changes, so that the actual effective air volume can not change along with the change of the external load, the effective air volume required by the user is constant, the constant air volume is realized, and the smoking effect is improved.
Description
Technical Field
The invention relates to a smoke treatment technology, in particular to a method and a device for adjusting a range hood.
Background
The range hood is arranged on the upper part or the side part of the cooking range and is integrated with a fan. The working principle of the range hood is that a fan rotates at a high speed to form a negative pressure area in a certain space range above a stove, indoor oil fume is sucked into the range hood, the oil fume is purified and separated into oil drops and smoke, the oil drops are collected into an oil cup, and the smoke is discharged along a flue.
The range hood is provided with a plurality of gears, each gear corresponds to a set air volume, and the air volume of the range hood on the market at present under the nominal gear is an ideal value tested and set under laboratory conditions. In the actual use process, because the resistance of the smoke pipe and the pressure of the common flue exist, the actual effective air volume of the same product and the same gear under different use environments is different. If the pressure of the common flue is higher, the actual effective air volume is lower, the phenomena of oil smoke escape and no smoking can occur, and even the oil smoke of other users flows backwards. The use requirements of users cannot be met.
Disclosure of Invention
The invention provides an adjusting method and device of a range hood, and aims to improve the smoking effect of the range hood.
The invention provides a method for adjusting a range hood, wherein the range hood comprises a fan, and the method comprises the following steps:
collecting the air speed of the outlet of the range hood and the frequency of the fan, and calculating to obtain an actual value of the air quantity of the fan and the pressure of a common flue;
and if the actual value of the air volume of the fan exceeds the set range of the set value of the air volume, calculating the target frequency of the fan according to the actual value of the air volume of the fan, the set value of the air volume and the pressure of the common flue, and adjusting the fan.
The invention also provides an adjusting device of a cigarette making machine, the cigarette making machine comprises a fan, and the adjusting device comprises:
the parameter acquisition module is used for acquiring the air speed of the outlet of the range hood and the frequency of the fan and calculating to obtain the actual value of the air quantity of the fan and the pressure of a common flue;
a processing parameter module for processing the air quantity of the fan if the actual value of the air quantity of the fan exceeds the set range of the set value of the air quantity,
and calculating according to the actual air volume value of the fan, the set air volume value and the pressure of the common flue to obtain the target frequency of the fan and adjusting the fan.
In the invention, the air speed of the outlet of the smoke machine and the frequency of the fan are collected, and the actual value of the air quantity of the fan and the pressure of the common flue are calculated; if the actual value of the air volume of the fan exceeds the set range of the set value of the air volume, the fact that the common flue pressure of the environment where the range hood is located at the current moment has a large influence on the output air volume of the range hood is shown, the target frequency required by the fan is calculated and adjusted according to the common flue pressure calculated at the current moment, the actual value of the air volume of the fan and the set value of the air volume, and the effective air volume of the fan can be within the set range of the set value of the air volume under the common flue pressure at the current moment after adjustment. Therefore, in the process that a user uses the cigarette machine, the frequency of the cigarette machine is controlled through wind speed feedback sensing to realize constant effective air volume adjustment, the air volume adjustment of the fan can be realized no matter how the load of the environment where the cigarette machine is located changes, the actual effective air volume can not change along with the change of the external load, the effective air volume meeting the user demands is constant, the constant air volume is realized, and the smoking effect is improved.
Drawings
To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.
FIG. 1 is a schematic illustration of a method of adjusting a cigarette making machine according to an embodiment of the present invention;
figure 2 is a schematic diagram of a method of adjusting a range hood provided by an embodiment of the present invention;
figure 3 is a schematic illustration of an intermediate load curve of a cigarette machine before optimization;
figure 4 is a schematic illustration of an optimized cigarette machine intermediate load curve;
figure 5 is a schematic view of an adjustment device for a range hood provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, a schematic diagram of an adjusting method of a cigarette making machine according to an embodiment of the present invention is shown. The cigarette machine described in this embodiment includes a blower and further includes an adjusting device for executing the adjusting method, and the adjusting device is implemented in a software and/or hardware manner and configured to be used in the cigarette machine.
The adjusting method provided by the embodiment comprises the following steps:
and S1, collecting the air speed of the outlet of the range hood and the frequency of the fan, and calculating to obtain the actual value of the air quantity of the fan and the pressure of the common flue.
In this step, the fan frequency is the actual frequency of the fan at the current moment, and the fan frequency is related to the rotating speed of the fan, so that the rotating speed of the fan can be calculated according to the actual frequency of the fan. Under the condition that the wind speed at the outlet of the range hood is determined, the wind speed and the wind volume have a functional relation, so that the actual value of the wind volume of the fan can be calculated according to the wind speed at the outlet of the range hood. The rotating speed and the air volume of the fan influence the total pressure of the fan, the total pressure of the fan is the air pressure of the fan, and therefore the actual value of the air pressure of the fan can be calculated according to the actual rotating speed and the actual value of the air volume of the fan. The air pressure and the air volume of the fan influence the pressure of the common flue, so that the pressure of the common flue can be calculated according to the actual value of the air pressure and the actual value of the air volume of the fan.
And S2, if the actual value of the fan air volume exceeds the set range of the air volume set value, calculating the target frequency of the fan according to the actual value of the fan air volume, the air volume set value and the pressure of the common flue, and adjusting the fan.
In actual use, the load of a cigarette machine of a user is changed constantly, the load of the cigarette machine is the pressure of a public flue of the environment where the cigarette machine is located, the public flue is a public smoke exhaust channel in a building, the higher the pressure of the public flue is, the worse the working condition environment where the cigarette machine is located is, the lower the pressure of the public flue is, and the better the working condition environment where the cigarette machine is located is. When a user uses a cigarette machine, the pressure of a common flue is not constant, the pressure of the common flue of a low floor in the same building is larger than that of a common flue of a high floor, and the detection shows that the pressure of the common flue is related to the actual value of the wind pressure of a fan and the actual value of the wind volume of the fan of the cigarette machine of the user.
In this embodiment, when the actual value of the air pressure of the fan and the actual value of the air volume of the fan of the cigarette machine change, the calculated pressure of the public flue changes, so that the pressure of the public flue at the current moment can be determined, and when the cigarette machine is subsequently adjusted, the condition that the pressure of the public flue at the current moment changes is considered, so that the smoking effect of the cigarette machine can be improved. Specifically, the regulating device is provided with an air volume set value, the air volume set value is an ideal constant air volume value predetermined in the actual load range of a user, for the range hood, the user can realize ideal constant air volume in actual use no matter how the external common flue pressure changes, and the range formed by the up-and-down floating error of the air volume set value is the set range of the air volume set value.
The adjusting device detects whether the actual value of the air volume of the fan is within the set range of the set value of the air volume, if so, the difference between the actual value of the air volume and the set value of the air volume is small at the current moment, the output air volume of the range hood can be regarded as normal, and the step S1 is returned.
If not, the difference value between the actual air quantity value of the fan and the set air quantity value at the current moment is larger, and obviously, the pressure of the common flue has larger influence on the output air quantity; at this time, the target frequency required by the fan is calculated according to the public flue pressure, the actual air volume value of the fan and the set air volume value which are calculated at the current moment, the fan is adjusted according to the target frequency, the effective air volume of the adjusted fan is in the set range of the set air volume value, and then the step S1 is returned. The actual value of the air quantity of the fan, the set value of the air quantity and the pressure of the common flue are known, the required value of the air pressure of the fan under the pressure of the common flue can be calculated according to the values, then the target frequency of the fan is determined through reverse operation, the frequency of the fan is adjusted to the target frequency, the effective air quantity output by a range hood can reach the set range of the set value of the air quantity, and the range hood can be regarded as constant air quantity when the air quantity is in the set range of the set value of the air quantity.
Therefore, no matter how the load of the environment where the range hood is located changes, the range hood can automatically adjust the frequency of the fan according to the changed public flue pressure so that the effective output air volume of the range hood is within the set range of the air volume set value, and constant air volume is achieved. It can be understood that manufacturers can adjust the set value of the air volume according to different products and market areas used by the products, and when the same product is applied to different market areas, the related parameters may be different, but not limited to this.
It should be noted that, for the range hood with poor working conditions, the calculated target frequency is greater than the acquired actual frequency at the current moment, that is, the fan of the range hood is controlled to output sufficient rotating speed, so as to ensure that the effective air volume is not reduced and improve the smoking effect. For a cigarette machine with better working conditions, the calculated target frequency is smaller than the actual frequency of the cigarette machine at the current moment, namely, the fan of the cigarette machine is controlled to reduce the rotating speed, so that the smoking effect is ensured, meanwhile, the noise can be reduced, and the user experience is improved. The smoking effect of not co-altitude floor installation cigarette machine has been considered to the constant-air-volume cigarette machine, is guaranteeing to satisfy each floor user and uses the basis on, reduces the noise of cigarette machine in the high floor user family, improves the smoking effect of cigarette machine in the low floor user family simultaneously.
In the embodiment, the air speed of the outlet of the range hood and the frequency of the fan are collected, and the actual value of the air quantity of the fan and the pressure of the common flue are calculated; if the actual value of the air volume of the fan exceeds the set range of the set value of the air volume, the fact that the common flue pressure of the environment where the range hood is located at the current moment has a large influence on the output air volume of the range hood is shown, the target frequency required by the fan is calculated and adjusted according to the common flue pressure calculated at the current moment, the actual value of the air volume of the fan and the set value of the air volume, and the effective air volume of the fan can be within the set range of the set value of the air volume under the common flue pressure at the current moment after adjustment. Therefore, in the process that a user uses the cigarette machine, the frequency of the cigarette machine is controlled through the wind speed feedback sensing to realize the staged constant effective air volume regulation, and the air volume regulation of the fan can be realized no matter how the load of the environment where the cigarette machine is located changes, so that the actual effective air volume can not change along with the change of the external load, the effective air volume constant meeting the user demands is realized, the constant air volume is realized, and the smoking effect is improved.
Exemplarily, on the basis of the above technical solution, as shown in fig. 2, the operation of step S1 may be selected, the wind speed at the outlet of the range hood and the frequency of the fan are collected, and the actual value of the wind volume of the fan and the common flue pressure are calculated, which specifically includes:
s11, collecting the wind speed v0 of the outlet of the range hood and the actual frequency f0 of the fan. And acquiring the actual frequency f0 of the fan and the actual wind speed v0 at the outlet of the range hood at the current time t 0.
S12, calculating the actual rotating speed n0 of the fan according to the formula (1), calculating the actual air volume value Q0 of the fan according to the formula (2), and calculating the actual air pressure value P of the fan according to the formula (3)T0Calculating a common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
PT＝H(Q，n) (3)；
wherein xi is the resistance coefficient of the branch pipe of the cigarette machine, A is the sectional area of the branch pipe of the cigarette machine, and D is the diameter of the branch pipe of the cigarette machine at the outlet of the cigarette machine.
In a mathematical model of the smoke machine, the rotating speed and the frequency of a fan are in a linear relation and have a functional relation shown in a formula (1); under the condition that the wind speed at the outlet of the range hood is determined, the functional relation between the wind quantity of the fan and the wind speed at the outlet of the range hood meets the formula (2); according to the characteristic curve of the wind pressure P-the wind quantity Q, the wind pressure of the fan can be determined by the fitting of the rotating speed and the wind quantity of the fan, and the functional relation of the wind pressure and the wind quantity meets the formula (3); the difference between the air pressure of the fan and the pressure of the common flue is consumed on the branch pipe of the range hood, and the equation is shown as a formula (4).
Based on the above functional relationship, at the current time, when the actual frequency f0 of the fan is known, the rotation speed calculated according to the formula (1) is the actual rotation speed n0 ═ μ (f0) of the fan. Knowing the wind speed v0 at the outlet of the range hood, the wind quantity calculated according to the formula (2) is the actual value Q0 of the wind quantity of the fan,
knowing the actual rotating speed n0 and the actual value Q0 of the wind volume of the fan, the wind pressure calculated according to the formula (3) is the actual value P of the wind pressure of the fanT0. The actual wind pressure value P of the fan is knownT0And the actual value Q0 of the air volume of the fan, the common flue pressure P0 of the range hood can be calculated according to the formula (4), and the P0 represents the common flue pressure at the current moment.
As shown in fig. 2, the operation of step S2 may be selected, and the target frequency of the fan is calculated according to the actual air volume value of the fan, the target air volume set value, and the common flue pressure, and the method adjusts the fan, and specifically includes:
s21, according to the actual value Q0 of the fan air volume and the set value Q of the air volumesetAnd a common flue pressure P0, and calculating a fan wind pressure requirement value P according to the formula (4)T1，PT1＝PT0+α(Q2 set-Q02)。
As mentioned above, the common flue pressure of the environment where the range hood is located is calculated and obtained at the known and collected current time as P0, and the actual value Q0 of the air volume of the fan at the known current time and the preset air volume set value Q stored in advance are knownsetThen, the wind of the fan can be calculated according to the formula (4)Pressure demand value PT1And calculating the required value P of wind pressure of the fanT1Is characterized in that the air quantity set value Q is reached under the external pressure P0 at the current momentsetThe required wind pressure of the fan.
Specifically, at the current moment, the actual value P of the wind pressure of the fan is knownT0The characteristic is that under the external pressure P0 at the current moment, the fan air pressure required by the actual value Q0 of the fan air volume is achieved, and the formula (4) is satisfied, namely PT0-P0＝αQ02. Known fan wind pressure requirement value PT1Characterized in that the air volume set value Q is reached under the external pressure P0 at the current momentsetThe required wind pressure of the fan, which satisfies the formula (4) PT1-P0＝αQ2 set. The two formulae are combined to obtain PT1-PT0＝α(Q2 set-Q02) I.e. PT1＝PT0+α(Q2 set-Q02) Thus, the common flue pressure P0 at the current moment is eliminated, and the wind pressure requirement value P of the fan is obtainedT1To a set value Q of the air volume onlysetAnd the actual value Q0 of the wind volume of the fan and the actual value P of the wind pressure of the fan at the current momentT0In this way, a constant air volume can be achieved regardless of changes in the external common flue pressure.
S22, calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) Then, the target frequency f1 of the fan is calculated and adjusted according to the formula (1), wherein f1 is mu-1(n1)。
It is known that the air volume set value Q is reached under the external pressure P0 at the current momentsetThe required wind pressure requirement value of the fan is PT1Then, the wind pressure requirement value P of the fan can be calculated according to the formula (3)T1Sum air volume set value QsetThe required fan required speed n1, n1 ═ H-1 Qset(PT1) Then, the target frequency f1 of the fan is calculated according to the formula (1), wherein f1 is mu-1(n 1). The frequency of the fan is adjusted to be f1 according to f1, and the actual air quantity output by the range hood can be at an air quantity set value Q after the fan operates according to the parameters after the frequency is adjustedsetWithin the range of the setting of (a),the constant air volume is realized, and the actual effective air volume of the range hood can not change along with the change of the external load.
As shown in fig. 2, the optional adjusting method further includes: and if the actual value of the air volume of the fan is in the set range of the set value of the air volume or the fan is adjusted, restarting the process after a specific time length. If the actual value of the fan air volume is within the set range of the air volume set value, the step is ended, and the process is restarted from step S1 at the next time t0+ Δ t. Alternatively, after the fan is adjusted at step S2, it is restarted from step S1 after a certain time period Δ t.
It can be understood that the specific time length delta t can be very small (for example, less than 0.5 second), so that the real-time regulation of the air quantity of the whole range hood is realized, and the range hood is always at the air quantity set value Q in the running processsetWithin the set range of (2), user experience is improved. The specific time length delta t can be relatively large (for example, about 1 minute), so that the air quantity of the range hood can be adjusted at regular time, the range hood can be adjusted at regular time after certain aggregation of smoke is generated, and the power consumption can be reduced.
The following description will be made by comparing the existing cigarette making machine with the cigarette making machine described in the embodiments of the present invention.
The nominal air volume of the range hood on the market at present is tested under laboratory conditions, the performance of the middle load, namely the pressure of a public flue, is not adjusted at all and is determined by the characteristics of an air duct system, however, in the actual use process of a user, the actual effective air volume is often lower, the more the user is at a lower layer, the larger the pressure of the public flue is, the lower the actual effective air volume is, the phenomena of oil smoke escape and no smoking can occur, and even the oil smoke of other users flows backward, so that the user experience is reduced. To this problem, this embodiment controls the performance curve of load in the middle of the cigarette machine, combines user's in-service use scene, adjusts middle characteristic curve through control logic, and the effective amount of wind that satisfies the user's demand is invariable, and the user is in the use, and the actual effective amount of wind can not reduce along with the change of external load, has solved the problem that the cigarette machine does not smoke and flows backward.
In the prior art, the change of external load is detected on the range hood, so that the range hood runs at different gears, the air pressure is increased, and the air quantity is increased. However, the gear is switched, only by increasing the output power and the rotating speed of the motor, the increased air volume is far larger than the required effective air volume, the noise of a user is large, and the experience is poor; or the increased air volume is still not enough to meet the user demand, and the smoking effect is still not ideal, causing the complaint of the user.
In the embodiment of the invention, the characteristic curve of the intermediate load of the range hood is optimized by adjusting the parameters of the range hood, so that the constant and effective air output in a user's home is ensured, the smoking problem of the user is solved, the noise is reduced, and the user experience is improved.
Referring to figure 3, a graph of the performance of a prior art cigarette making machine is shown. The ordinate is the actual load of the user, namely the pressure of the public flue, the abscissa is the actual output air volume of the cigarette machine, the air pressure and air volume of the point A are ideal air pressure and air volume points advertised by the cigarette machine, and obviously, the larger the pressure of the public flue is, the smaller the actual output air volume of the cigarette machine is, the smaller the pressure of the public flue is, and the larger the actual output air volume of the cigarette machine is. The reason is that the actual air exhaust volume of the household smoke exhaust machine of each user is different due to the reasons of smoke pipe installation, the positions of the public flues of different floors, the opening rate of the smoke exhaust machine during the use of the smoke exhaust machine and the like under the actual working conditions of the household smoke exhaust machine of different users. The actual output air volume of the range hood with poor working conditions is less than the air volume value meeting the user requirements, and the range hood has poor smoking effect and does not smoke. The actual output air volume of the cigarette machine with better working condition is larger than the air volume value meeting the user requirement, the smoking effect is not problematic, but the air volume is too large, so that the noise is large.
Referring to fig. 4, the performance curve of the optimized constant effective air volume smoke machine is shown. The constant air volume is realized on the basis of the prior art, namely, the actual effective air volume of the cigarette machine is ensured to be constant no matter how the load of the environment where the cigarette machine is located changes, so that the actual effective air volume can not change along with the change of the external load, the effective air volume meeting the user demands is constant, the constant air volume is realized, and the smoking effect is improved. The optimization process is as described in the above embodiments, the specific air volume and air pressure parameter is mainly determined by the fan rotation speed, the fan rotation speed is related to the fan current and power parameters, when the external load changes, the current and power of the fan change, the fan characteristics change along with the change, the program of the adjusting device judges the air volume change according to the parameter change, and the new current power parameter is input to the fan according to the change to correct the change of the air volume, thereby ensuring the constant effective air volume within a certain range.
After optimization, preferably, the range hood is controlled to keep constant air volume in the user actual load range (namely the interval 1), namely, the output air volume of the range hood is kept in the user actual air volume range (namely the interval 2), the user actual load range (namely the interval 1) is the range where the loads of users on high and low floors in the area are located, and the user actual air volume range (namely the interval 2) is the set range of the air volume set value. As shown in fig. 4, under the load corresponding to point B, the air volume of the optimized curve is greater than the original actual output air volume, that is, for the range hood with poor working condition, the obtained target frequency is greater than the actual frequency at the time of collection, so that the rotating speed of the fan can be increased to enable the fan to output sufficient rotating speed, and the output effective air volume is increased to enable the output effective air volume to reach the set range of the air volume set value. As shown in figure 4, under the load that C point corresponds, the curved amount of wind after optimizing is less than the actual output amount of wind originally, and for better operating mode cigarette machine promptly, the target frequency who reachs is less than the actual frequency of gathering constantly, then can reduce motor speed, reduces the effective amount of wind of output and makes it be located the settlement within range of amount of wind set point, so can be when guaranteeing cigarette machine smoking effect, noise reduction, promotion user experience.
It should be noted that the load and the common flue pressure can be said to be equivalent concepts, and the fan air pressure is output according to the magnitude of the common flue pressure in the user's home, and the common flue pressure and the fan air pressure have an absolute correlation, so fig. 3 and 4 can also be regarded as the optimized front-back relationship between the fan air pressure and the air volume. As shown in fig. 3, the wind pressure and the wind volume at the point a are ideal values advertised by the range hood, but actually, under a large fan wind pressure, the actual output wind volume of the range hood cannot reach the ideal values. As shown in FIG. 4, the cigarette machine can keep constant air volume no matter under the condition of large fan air pressure or small fan air pressure after optimization as long as the fan air pressure is in the actual air pressure use range.
The embodiment of the invention realizes constant air volume through the constant air volume control logic, and can understand that the parameter control logic can also be applied to other products of the same type. Those skilled in the art will appreciate that the amount of residential kitchen exhaust air is selected with the goal of meeting kitchen exhaust air requirements. The exhaust air volume is too small, the oil smoke can escape, and the kitchen has peculiar smell. However, it is not preferable that the larger the size is, the larger the amount of exhaust air is, and the more the power consumption and noise of the fan in the kitchen will be increased. According to the embodiment of the invention, the fan characteristic curve is optimized through program control according to the actual use requirements of users, on the basis of ensuring that the use requirements of users on each floor are met, the air quantity of high-rise users is reduced, the noise is reduced, and meanwhile, the smoking effect of low-rise users is ensured.
The embodiment of the invention also provides a regulating device of a cigarette making machine, the cigarette making machine comprises a fan, and as shown in figure 5, the regulating device comprises: the parameter acquisition module 10 is used for acquiring the air speed at the outlet of the range hood and the frequency of the fan, and calculating to obtain the actual value of the air quantity of the fan and the pressure of the common flue; and the processing parameter module 20 is used for calculating the target frequency of the fan according to the actual air volume value of the fan, the set air volume value and the pressure of the common flue and adjusting the fan if the actual air volume value of the fan exceeds the set range of the set air volume value.
The optional acquisition parameter module comprises:
the collecting unit is used for collecting the wind speed v0 of the outlet of the smoke machine and the actual frequency f0 of the fan;
a first arithmetic unit for calculating the actual speed n0 of the fan according to the formula (1), the actual value Q0 of the wind volume of the fan according to the formula (2), and the actual value P of the wind pressure of the fan according to the formula (3)T0Calculating a common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
PT＝H(Q，n) (3)；
wherein xi is the resistance coefficient of the branch pipe of the cigarette machine, A is the sectional area of the branch pipe of the cigarette machine, and D is the diameter of the branch pipe of the cigarette machine at the outlet of the cigarette machine.
The optional processing parameter module comprises:
a second arithmetic unit for calculating the actual value Q0 of the fan air volume and the set value Q of the air volumesetAnd a common flue pressure P0, and calculating a fan wind pressure requirement value P according to the formula (4)T1，PT1＝PT0+α(Q2 set-Q02) (ii) a Calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) Then, the target frequency f1 of the fan is calculated according to the formula (1), wherein f1 is mu-1(n1)；
And the adjusting unit is used for adjusting the frequency of the fan according to the target frequency f1 of the fan.
Optionally, the adjusting device further comprises: and the circulation module 30 is used for restarting the process after a certain time length if the actual value of the air volume of the fan is within the set range of the air volume set value or the fan is adjusted.
Accordingly, the frequency conversion scheme control logic of the air volume control device is as follows:
step 1: acquiring a frequency f0 at a time t0, and obtaining the fan speed n0 at the time as mu (f0) according to the formula (1);
step 2: the wind speed v0 at the outlet of the fan at the moment is collected, and the wind volume of the fan at the moment can be obtained by the formula (2)
Comparing Q0 with the air volume set value Qset:
if the difference value of the two is within the set range, ending the Step, and restarting from Step1 at the next time t0+ delta t; if the difference value of the two values is out of the set range, Step3 is carried out;
step 3: calculating the actual value P of the wind pressure of the fan at the moment by the formula (3)T0H (Q0, n0), the common flue pressure P0 at that time is calculated from equation (4) as PT0-αQ02Thus, the required pressure P to the air flow set value Qset at the outside pressure P0 is obtainedT1＝P0+αQset 2；
Step 4: determining the required rotating speed of the fan under the external pressure as n1 ═ G-1 Qset(PT1) Further, from (1), the target value of the fan frequency adjustment is obtained as f1 ═ μ-1(n1)；
Step 5: at the next time t0+ Δ t, it restarts at Step 1.
In the embodiment, the air speed of the outlet of the range hood and the frequency of the fan are collected, and the actual value of the air quantity of the fan and the pressure of the common flue are calculated; if the actual value of the air volume of the fan exceeds the set range of the set value of the air volume, the fact that the common flue pressure of the environment where the range hood is located at the current moment has a large influence on the output air volume of the range hood is shown, the target frequency required by the fan is calculated and adjusted according to the common flue pressure calculated at the current moment, the actual value of the air volume of the fan and the set value of the air volume, and the effective air volume of the fan can be within the set range of the set value of the air volume under the common flue pressure at the current moment after adjustment. Therefore, in the process that a user uses the cigarette machine, no matter how the load of the environment where the cigarette machine is located changes, the air volume regulation of the fan can be realized, the actual effective air volume can not change along with the change of the external load, the effective air volume meeting the user demand is constant, the constant air volume is realized, and the smoking effect is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. An adjustment method for a range hood, the range hood including a fan, the adjustment method comprising:
collecting the air speed of the outlet of the range hood and the frequency of the fan, and calculating to obtain an actual value of the air quantity of the fan and the pressure of a common flue;
and if the actual value of the air volume of the fan exceeds the set range of the set value of the air volume, calculating the target frequency of the fan according to the actual value of the air volume of the fan, the set value of the air volume and the pressure of the common flue, and adjusting the fan.
2. The adjusting method according to claim 1, wherein the steps of collecting the wind speed at the outlet of the range hood and the frequency of the fan and calculating the actual value of the air volume of the fan and the pressure of the common flue comprise:
collecting the wind speed v0 of the outlet of the range hood and the actual frequency f0 of the fan;
calculating the actual rotating speed n0 of the fan according to the formula (1), calculating the actual air volume value Q0 of the fan according to the formula (2), and calculating the actual air pressure value P of the fan according to the formula (3)T0Calculating the common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
PT＝H(Q，n) (3)；
and xi is the resistance coefficient of the branch pipe of the cigarette machine, A is the sectional area of the branch pipe of the cigarette machine, and D is the diameter of the branch pipe of the cigarette machine at the outlet of the cigarette machine.
3. The adjusting method according to claim 2, wherein calculating a target frequency of the fan according to the actual air volume value of the fan, the set air volume value and the common flue pressure and adjusting the fan comprises:
according to the actual value Q0 of the fan air volume and the set value Q of the air volumesetAnd the common flue pressure P0, and calculating the fan wind pressure requirement value P according to the formula (4)T1，PT1＝PT0+α(Q2 set-Q02)；
Calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) And then calculating and adjusting the target frequency f1 of the fan according to the formula (1), wherein f1 is mu-1(n1)。
4. The adjustment method according to claim 1, further comprising: and if the actual value of the air volume of the fan is in the set range of the set value of the air volume or the fan is adjusted, restarting the process after a certain time length.
5. An adjustment device for a range hood, said range hood comprising a fan, the adjustment device comprising:
the parameter acquisition module is used for acquiring the air speed of the outlet of the range hood and the frequency of the fan and calculating to obtain the actual value of the air quantity of the fan and the pressure of a common flue;
and the processing parameter module is used for calculating the target frequency of the fan according to the actual air quantity value of the fan, the set air quantity value and the pressure of the common flue and adjusting the fan if the actual air quantity value of the fan exceeds the set range of the set air quantity value.
6. The adjustment device of claim 5, wherein the acquisition parameter module comprises:
the collecting unit is used for collecting the wind speed v0 of the outlet of the range hood and the actual frequency f0 of the fan;
a first arithmetic unit for calculating the actual speed n0 of the fan according to formula (1), the actual wind quantity Q0 of the fan according to formula (2), and the actual wind pressure P of the fan according to formula (3)T0Calculating the common flue pressure P0 according to equation (4);
n＝μ(f) (1)；
PT＝H(Q，n) (3)；
and xi is the resistance coefficient of the branch pipe of the cigarette machine, A is the sectional area of the branch pipe of the cigarette machine, and D is the diameter of the branch pipe of the cigarette machine at the outlet of the cigarette machine.
7. The adjustment device of claim 6, wherein the processing parameter module comprises:
a second arithmetic unit for calculating the actual value Q0 of the fan air volume and the set value Q of the air volumesetAnd the common flue pressure P0, and calculating the fan wind pressure requirement value P according to the formula (4)T1，PT1＝PT0+α(Q2 set-Q02) (ii) a Calculating the required rotating speed n1 of the fan according to the formula (3), wherein n1 is H-1 Qset(PT1) And then calculating the target frequency f1 of the fan according to the formula (1), wherein f1 is mu-1(n1)；
And the adjusting unit is used for adjusting the frequency of the fan according to the target frequency f1 of the fan.
8. The adjustment device of claim 5, further comprising: and the circulation module is used for restarting the process after a specific time length if the actual air volume value of the fan is within the set range of the air volume set value or the fan is regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010156883.0A CN113108332B (en) | 2020-03-09 | 2020-03-09 | Method and device for adjusting range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010156883.0A CN113108332B (en) | 2020-03-09 | 2020-03-09 | Method and device for adjusting range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113108332A true CN113108332A (en) | 2021-07-13 |
| CN113108332B CN113108332B (en) | 2022-08-12 |
Family
ID=76709229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010156883.0A Active CN113108332B (en) | 2020-03-09 | 2020-03-09 | Method and device for adjusting range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113108332B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202470169U (en) * | 2012-02-17 | 2012-10-03 | 宁波方太厨具有限公司 | Device for adaptively adjusting fan speed of smoke exhauster |
| CN107044671A (en) * | 2017-03-24 | 2017-08-15 | 欧派家居集团股份有限公司 | Pressure sensitive speedup control method and high-static pressure fan system, range hood |
| CN110274284A (en) * | 2019-05-21 | 2019-09-24 | 宁波方太厨具有限公司 | A kind of building common duct smoke evacuation system and its control method |
| CN110617521A (en) * | 2019-09-12 | 2019-12-27 | 华帝股份有限公司 | Automatic air quantity adjusting method of range hood and range hood |
| CN110630554A (en) * | 2019-10-18 | 2019-12-31 | 峰岹科技（深圳）有限公司 | Stepless constant air volume control method for fan, fan control device and fan |
-
2020
- 2020-03-09 CN CN202010156883.0A patent/CN113108332B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202470169U (en) * | 2012-02-17 | 2012-10-03 | 宁波方太厨具有限公司 | Device for adaptively adjusting fan speed of smoke exhauster |
| CN107044671A (en) * | 2017-03-24 | 2017-08-15 | 欧派家居集团股份有限公司 | Pressure sensitive speedup control method and high-static pressure fan system, range hood |
| CN110274284A (en) * | 2019-05-21 | 2019-09-24 | 宁波方太厨具有限公司 | A kind of building common duct smoke evacuation system and its control method |
| CN110617521A (en) * | 2019-09-12 | 2019-12-27 | 华帝股份有限公司 | Automatic air quantity adjusting method of range hood and range hood |
| CN110630554A (en) * | 2019-10-18 | 2019-12-31 | 峰岹科技（深圳）有限公司 | Stepless constant air volume control method for fan, fan control device and fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113108332B (en) | 2022-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106705376B (en) | Self-cleaning method for indoor unit of air conditioner | |
| CN113108330B (en) | Method and device for adjusting range hood | |
| CN108444044B (en) | Self-cleaning control method for air conditioner | |
| CN109114608B (en) | Control method for range hood and range hood | |
| KR101050412B1 (en) | Energy-saving kitchen ventilation control system and method | |
| CN108413578B (en) | Self-cleaning control method for air conditioner | |
| CN105158504A (en) | Wind speed and wind pressure sensor for range hood and range hood | |
| CN111197776B (en) | Flow distribution control method for central flue system of high-rise building | |
| CN107525226A (en) | For controlling the method and device of air-conditioning | |
| CN113108331B (en) | Method and device for adjusting range hood | |
| CN109489215B (en) | Wind speed self-adaptive control method, control device and combined air conditioning unit | |
| CN114017819B (en) | Control device and method for kitchen and bathroom exhaust system of residence | |
| CN110274285A (en) | A kind of building common duct smoke evacuation system and its control method | |
| CN113108332B (en) | Method and device for adjusting range hood | |
| CN111197775A (en) | Flow distribution control method for central flue system of high-rise building | |
| CN108534313A (en) | The method, apparatus and computer storage media of air conditioner dehumidification control | |
| CN113108328B (en) | Method and device for adjusting range hood | |
| CN113108337B (en) | Air volume control method and device for range hood | |
| CN113108335B (en) | Air volume control method and device for range hood | |
| CN113108334B (en) | Wind pressure control method and device for range hood | |
| CN113108336B (en) | Wind pressure control method and device of range hood | |
| CN113108338B (en) | Wind pressure control method and device for range hood | |
| CN113108329B (en) | Method and device for adjusting range hood | |
| CN113108333B (en) | Wind pressure control method and device for range hood | |
| CN109084425A (en) | Air conditioner and its control method and computer readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |