CN110173726B - Air volume control device and method of central purification system and central purification system - Google Patents
Air volume control device and method of central purification system and central purification system Download PDFInfo
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- CN110173726B CN110173726B CN201910465990.9A CN201910465990A CN110173726B CN 110173726 B CN110173726 B CN 110173726B CN 201910465990 A CN201910465990 A CN 201910465990A CN 110173726 B CN110173726 B CN 110173726B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- 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
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- 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
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Abstract
The invention provides an air volume control device and method of a central purification system and the central purification system, relating to the technical field of air purification.A first air volume detection module and a second air volume detection module respectively detect a first air volume in a connecting pipe of an opened first smoke collecting hood and a second air volume in a connecting pipe of an opened second smoke collecting hood in real time; the first air valve control module controls an air valve of the first smoke collecting hood to open a designated angle when the first smoke collecting hood is positioned at the bottommost part of all opened smoke collecting hoods, and determines the running state of the first smoke collecting hood according to the first air volume; the second air valve control module adjusts the opening angle of an air valve of the second smoke collecting hood according to the second air volume when the second smoke collecting hood is not positioned at the bottommost part; when the running state of the first fume collecting hood is abnormal, the fan main unit adjusts the rotating speed of the roof fan. The air quantity of each floor can be kept balanced, sufficient power is ensured, air quantity self-adaption is realized, and the influence of the structure of a central purification system is avoided.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to an air volume control device and method of a central purification system and the central purification system.
Background
With the continuous improvement of living standard and housing condition of people, housing smoke discharge problem is receiving more and more attention. The principle of residential smoke exhaust is to exhaust smoke from a vertical shaft to a roof through a public flue. The power source of tradition smoke exhaust is mainly the lampblack absorber, and at present, high floor building adopts usually to provide the central purification system of power based on roof fan, and this system includes public flue, and the kitchen of each floor all is equipped with the lampblack absorber, and the lampblack absorber passes through the connecting pipe to be connected with public flue. The range hood of each floor adjusts the air volume of each floor through the motorised valve.
However, the control method of the electric valve is related to parameters such as the size and the model of each component of the central purification system, for example, structural parameters of the range hood, the electric valve, the connecting pipe, the public flue and the like, so that the air volume control is complicated, the air volume of each floor is not balanced enough, and the self-adaption is poor due to the influence of the structure of the centralized kitchen smoke exhaust system.
Disclosure of Invention
The invention aims to provide an air volume control device and method of a central purification system and the central purification system, which are used for relieving the technical problems that the air volume of each floor is not balanced enough due to low air volume control precision, and the self-adaption is poor due to the influence of the structure of the central purification system.
The invention provides an air quantity control device of a central purification system, wherein the central purification system comprises a roof fan and smoke collecting hoods arranged on each floor, each smoke collecting hood is connected with a public flue through a connecting pipe, an air valve is arranged on each connecting pipe, and the device comprises: the air volume control system comprises a first air volume detection module, a second air volume detection module, a first air valve control module, a second air valve control module and a fan host;
the first air volume detection module is used for detecting first air volume in a connecting pipe of the opened first exhaust fume collecting hood in real time and sending the first air volume to the first air valve control module;
the second air volume detection module is used for detecting second air volume in a connecting pipe of the opened second smoke collecting hood in real time and sending the second air volume to the second air valve control module;
the first air valve control module is used for controlling an air valve of the first fume collecting hood to open a designated angle if the first fume collecting hood is positioned at the bottommost part of all opened fume collecting hoods, and determining the running state of the first fume collecting hood according to the first air volume; sending the running state of the first smoke collecting hood to the fan host; when the running state of the first smoke collecting hood is normal, the first air volume is within the set air volume value range;
the second air valve control module is used for adjusting the opening angle of an air valve of the second fume collecting hood according to the second air volume if the second fume collecting hood is not positioned at the bottommost part of all opened fume collecting hoods so as to enable the second air volume to be within a set air volume value range;
and the fan host is used for adjusting the rotating speed of the roof fan when the running state of the first smoke collecting hood is in an abnormal state until the running state of the first smoke collecting hood is normal.
The invention provides an air volume control method of a central purification system, which is applied to an air valve control module and comprises the following steps:
if the current fume collecting hood is opened, judging whether the current fume collecting hood is positioned at the bottommost part of all opened fume collecting hoods;
if so, controlling an air valve of the current fume collecting hood to open a specified angle, and acquiring the air volume in a connecting pipe of the current fume collecting hood;
determining the running state of the current smoke collecting hood according to the air volume in the connecting pipe of the current smoke collecting hood;
and sending the running state of the current smoke collecting hood to the fan host machine so that the fan host machine controls the rotating speed of the roof fan.
Further, the method further comprises:
if the current fume collecting hood is not positioned at the bottommost part of all opened fume collecting hoods, acquiring the air volume in a connecting pipe of the current fume collecting hood;
and adjusting the opening angle of an air valve of the current smoke collecting hood according to the air volume in the connecting pipe of the current smoke collecting hood so as to enable the air volume in the connecting pipe of the current smoke collecting hood to be within a set air volume value range.
Further, the step of judging whether the current fume collecting hood is positioned at the bottommost of all opened fume collecting hoods includes:
receiving floor information of all opened smoke collecting hoods sent by the fan host, and acquiring the floor information of the current smoke collecting hood;
and judging whether the current fume collecting hood is positioned at the bottommost part of all the opened fume collecting hoods or not according to the floor information of all the opened fume collecting hoods and the floor information where the current fume collecting hoods are positioned.
Further, the step of determining the operation state of the current fume collecting hood according to the air volume in the connecting pipe of the current fume collecting hood includes:
if the air volume in the connecting pipe of the current fume collecting hood is larger than a first air volume threshold value, determining that the current fume collecting hood is in an overload state;
if the air volume in the connecting pipe of the current exhaust fume collecting hood is smaller than a second air volume threshold value, determining that the current exhaust fume collecting hood is in an under-pressure state; wherein the second air volume threshold is less than the first air volume threshold;
and if the air volume in the connecting pipe of the current exhaust fume collecting hood is between the first air volume threshold value and the second air volume threshold value, determining that the current exhaust fume collecting hood is in a normal state.
Further, the step of adjusting the opening angle of the damper of the current fume collecting hood according to the air volume in the connecting pipe of the current fume collecting hood includes:
judging whether the air volume in a connecting pipe of the current exhaust fume collecting hood is larger than a first air volume threshold value or not;
and if the air volume is larger than the first air volume threshold value, controlling the air valve of the current smoke collecting hood to reduce the opening angle.
Further, the method further comprises:
if the air volume in the connecting pipe of the current fume collecting hood is smaller than the first air volume threshold value, judging whether the air volume in the connecting pipe of the current fume collecting hood is smaller than a second air volume threshold value;
and if the air volume is smaller than the second air volume threshold value, controlling the air valve of the current smoke collecting hood to increase the opening angle.
The invention provides an air volume control method of a central purification system, which is applied to a fan host and comprises the following steps:
acquiring the running state of the smoke collecting hood positioned at the bottommost part of all opened smoke collecting hoods;
and if the operation state of the smoke collecting hood positioned at the bottommost part is an abnormal state, adjusting the rotating speed of the roof fan until the operation state of the smoke collecting hood positioned at the bottommost part is normal.
Further, if the operation state of the smoke collecting hood located at the bottommost part is an abnormal state, the step of adjusting the rotation speed of the roof fan includes:
if the running state of the smoke collecting hood positioned at the bottommost part is an overload state, controlling the roof fan to reduce the rotating speed;
and if the running state of the smoke collecting hood positioned at the bottommost part is an under-pressure state, controlling the roof fan to increase the rotating speed.
The invention provides a central purification system, which comprises a roof fan, smoke collecting hoods arranged on all floors, an air valve and an air volume control device, wherein each smoke collecting hood is connected with a public flue through a connecting pipe, and the air valve is arranged on the connecting pipe.
According to the air volume control device and method of the central purification system and the central purification system, the rotating speed of the roof fan is adjusted according to the running state of the bottommost fume collecting hood in all the fume collecting hoods which are opened, so that the running state of the first fume collecting hood is normal, namely the air volume in the connecting pipe of the first fume collecting hood is in the range of the set air volume value, and meanwhile, sufficient power can be ensured; and the corresponding air valve is adjusted according to the air volume in the connecting pipe of the non-bottommost fume collecting hood, so that the air volume in the connecting pipe is in the range of the set air volume value, thereby ensuring that the air volume of each floor is kept balanced, realizing air volume self-adaption and being not influenced by the structure of a central purification system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a central purification system provided by an embodiment of the present invention;
fig. 2 is a schematic view of an air volume control device of a central purification system according to an embodiment of the present invention;
fig. 3 is a flowchart of an air volume control method of a central purification system according to an embodiment of the present invention;
FIG. 4 is a flow chart of an air volume control method of another central purification system according to an embodiment of the present invention;
fig. 5 is a flowchart of an air volume control method of another central purification system according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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 embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The air volume control of the existing central purification system is complex, so that the air volume of each floor is not balanced enough, and the air volume self-adaption is poor under the influence of the structure of the central purification system. Based on this, the air volume control device and method for the central purification system and the central purification system provided by the embodiment of the invention can control the air volume of each floor to keep balance, ensure sufficient power of a roof fan, realize air volume self-adaptation and are not influenced by the structure of a centralized smoke exhaust system.
Referring to fig. 1, the central purification system according to the embodiment of the present invention includes a roof fan 6 and smoke collecting hoods 1 disposed on various floors, where it should be noted that each floor may include a plurality of smoke collecting hoods 1, each smoke collecting hood 1 is connected to a common flue 5 through a connecting pipe 3, an air valve 2 is disposed on the connecting pipe 3, and specifically, an electric valve may be employed, and the air volume in the connecting pipe 3 may be adjusted through the air valve 2. In practical use, oil smoke generated in a kitchen is sucked by the smoke collecting hood 1, flows into the common flue 5 through the air valve 2, the connection 3, the fireproof check valve 4 and the like, and is finally sucked at the top by the roof fan 6 and discharged.
Referring to fig. 2, an embodiment of the present invention provides an air volume control device for a central purification system, including: the air volume control system comprises a first air volume detection module 21, a second air volume detection module 23, a first air valve control module 22, a second air valve control module 24 and a fan host 25; in practical application, the connecting pipe of each smoke collecting hood is provided with an air volume detection module, specifically, an air volume sensor can be adopted, each air valve is controlled by an air valve control module, and each air valve control module is connected with the fan host computer 25.
And the first air volume detection module 21 is used for detecting the first air volume in the connecting pipe of the opened first exhaust fume collecting hood in real time and sending the first air volume to the first air valve control module 22.
And the second air volume detection module 23 is configured to detect a second air volume in a connecting pipe of the opened second smoke collecting hood in real time, and send the second air volume to the second air valve control module 24.
The first air valve control module 22 is used for controlling an air valve of the first fume collecting hood to open a designated angle if the first fume collecting hood is positioned at the bottommost part of all opened fume collecting hoods, and determining the running state of the first fume collecting hood according to the first air volume; the operation state of the first fume collecting hood is sent to the fan main unit 25. When the running state of the first fume collecting hood is normal, the first air volume is within the range of the set air volume value.
In particular implementations, when the first fume collecting hood is open, the first damper control module 22 first determines whether the first fume collecting hood is at the bottom most of all of the open fume collecting hoods. The fan host 25 may acquire floor information of all opened fume collecting hoods and send the floor information of all opened fume collecting hoods to the first air valve control module 22, and the first air valve control module 22 may determine whether the first fume collecting hood is located at the bottommost of all opened fume collecting hoods according to the floor information of all opened fume collecting hoods and the floor information where the first fume collecting hood is located. It should be noted that the floor where the first fume collecting hood is located may include a plurality of fume collecting hoods, each of which is located at the lowermost portion of all the open floors.
For example, for a 6-storey building, if the smoke-collecting hoods of floors 2, 4 and 5 are all open, the smoke-collecting hood of floor 2 is located at the bottommost of all the open smoke-collecting hoods. When the first damper control module 22 determines that the first fume collecting hood is at the lowermost of all the open fume collecting hoods, the damper of the first fume collecting hood may be controlled to open to a maximum angle, typically set at 90 degrees.
Specifically, the air valve of the first smoke collecting hood comprises a first valve control circuit, the first air valve control module 22 is respectively connected with a first power supply module, a first key module, a first air volume detection module 21, a first display module, a first driving module and a first communication module, and the first driving module is connected with the first valve control circuit; the first communication module can adopt a wireless communication module and can also adopt a wired communication module.
The user can open first collection petticoat pipe through first module, when first collection petticoat pipe is opened, first wind valve control module 22 sends collection petticoat pipe opening signal for fan host computer 25 through first communication module, so that fan host computer 25 control roof fan operation, in roof fan operation process, first wind valve control module 22 controls first amount of wind detection module 21 real-time detection first amount of wind in the connecting pipe of first collection petticoat pipe, and can show the size of first amount of wind through first display module, and simultaneously, first wind valve control module 22 controls first drive module and makes valve control circuit power-on, open to the maximum angle with the valve block of control blast gate.
In this embodiment, the process of the first air valve control module 22 determining the operation state of the first fume collecting hood according to the first air volume is as follows: if the first air volume is larger than the first air volume threshold value, determining that the first exhaust fume collecting hood is in an overload state; if the first air volume is smaller than the second air volume threshold value, the first exhaust fume collecting hood is determined to be in an under-pressure state; the second air volume threshold value is smaller than the first air volume threshold value; and if the first air volume is between the first air volume threshold value and the second air volume threshold value, determining that the first fume collecting hood is in a normal state.
In practical application, the first air volume Q1 needs to reach a preset air volume value Q0, sigma is an allowable error, and Q0 is generally 300-500 m according to the basic requirement of kitchen exhaust air volume3Any value within/h, preferably, Q0 takes 500m3H is used as the reference value. The first air volume threshold is Q0+ sigma, the second air volume threshold is Q0-sigma, and the set air volume value range is Q0-sigma to Q0+ sigma.
And the second air valve control module 24 is used for adjusting the opening angle of the air valve of the second smoke collecting hood according to the second air volume so as to enable the second air volume to be in the set air volume value range if the second smoke collecting hood is not positioned at the bottommost part of all the opened smoke collecting hoods. In particular implementations, when the second fume collecting hood is open, the second air valve control module 24 first determines whether the second fume collecting hood is located at the bottom most of all of the open fume collecting hoods. The determination method is the same as that of the first air valve control module 22, and is not described herein again.
Specifically, the air valve of the second fume collecting hood comprises a second valve control circuit, the second air valve control module 24 is respectively connected with a second power supply module, a second key module, a second air volume detection module 23, a second display module, a second driving module and a second communication module, and the second driving module is connected with the second valve control circuit; the second communication module can adopt a wireless communication module and can also adopt a wired communication module.
The user can open the second collection petticoat pipe through the second module, when the second collection petticoat pipe is opened, second air valve control module 24 sends collection petticoat pipe opening signal to fan host computer 25 through second communication module, so that fan host computer 25 control roof fan operation, in roof fan operation process, second air valve control module 24 control second amount of wind detection module 23 detects the second amount of wind in the connecting pipe of second collection petticoat pipe in real time, and can show the size of second amount of wind through the second display module, and simultaneously, second air valve control module 24 control second drive module makes valve control circuit power-on, open with the valve block of control blast gate, and adjust the opening angle of valve block according to the second amount of wind.
Here, the second air flow Q2 also needs to reach the preset air flow value Q0And sigma is an allowable error, and the process of the second air valve control module 24 according to the opening angle of the second air volume adjusting valve plate specifically includes: if the Q2 value is larger than Q0+ sigma, the opening angle of the valve plate is reduced; and if the Q2 value is smaller than Q0-sigma, increasing the opening angle of the valve plate. Therefore, the second air volume is maintained in the range of Q0-sigma to Q0+ sigma and basically kept unchanged during the use process of the second fume collecting hood. It should be noted that the second fume collecting hood means any fume collecting hood not located at the bottommost among all the open fume collecting hoods.
And the fan host 25 is used for adjusting the rotating speed of the roof fan when the running state of the first fume collecting hood is abnormal until the running state of the first fume collecting hood is normal.
Specifically, the fan host 25 includes a third power module, a third communication module, a fan control module, a fan driving module, and a frequency converter, wherein the third communication module may be a wireless communication module or a wired communication module. The fan control module receives a smoke collecting cover opening signal sent by the air valve control module corresponding to each started smoke collecting cover through the third communication module, so that the operation condition of the smoke collecting cover of each floor is obtained; thereby identifying the first fume collecting hood located at the bottommost of all the opened fume collecting hoods and acquiring the operating state thereof.
In this embodiment, the abnormal state of the first smoke collecting hood includes the overload state and the undervoltage state, and when the fan host 25 receives the operating state of the first smoke collecting hood sent by the first air valve control module 22, it determines whether the operating state of the first smoke collecting hood is the overload state or the undervoltage state. Since the first fume collecting hood is located at the lowermost part of all the opened fume collecting hoods, whether the operating state of the first fume collecting hood is normal or not indicates whether the power of the roof fan is sufficient or not.
When the running state of the first fume collecting hood is an overload state, the power of the roof fan is over sufficient, and the rotating speed of the roof fan is reduced; when the state is the undervoltage state, then roof fan's power is not enough, improves roof fan's rotational speed thereupon, and the running state until first collection petticoat pipe is normal, and at this moment, first amount of wind is in setting for the amount of wind value within range. Therefore, in the operation process of the central purification system, the first air volume of the first fume collecting hood is always maintained within the range of the preset air volume value, and therefore it is guaranteed that each fume collecting hood always has sufficient power to discharge fume.
Next, a control process of the air volume control device of the central purification system according to the present embodiment will be described by taking an example of operation of two exhaust fume collecting hoods on different floors.
For example, the exhaust amount of the floor where the starting-up exhaust fume collecting hood is located is 500m3H is used as the reference value. The first fume collecting hood is positionedThe floor is positioned below the floor where the second smoke collecting cover is positioned. When the first smoke collecting hood is opened, the air valve of the first smoke collecting hood is instantly opened and is opened to the maximum angle (generally 90 degrees), the air valve control module of the first smoke collecting hood sends a smoke collecting hood opening signal to the fan host 25 through a wireless signal, the fan host 25 controls the roof fan to operate and gradually adjust the roof fan, and the exhaust volume of the current floor is maintained to be 500m3H is used as the reference value. When the second fume collecting hood is opened, the air valve is instantly opened, the air valve control module sends a fume collecting hood opening signal to the fan main unit 25 through a wireless signal and controls the air valve to adjust, and the exhaust volume of the current floor is maintained to be 500m3H; at this moment, the situation that the air quantity is insufficient will occur in the first fume collecting hood, the air valve control module of the first fume collecting hood reports an under-voltage signal to the fan host 25, the fan host 25 controls the roof fan to increase the rotating speed so as to promote the power, and finally the exhaust air quantity of the two fume collecting hoods is maintained to be 500m3/h。
When the two fume collecting hoods are closed successively, the corresponding air valve control modules control the air valves to be closed instantly, and send fume collecting hood closing signals to the fan host 25 through wireless signals, and the fan host 25 records that the operation number is 0 and controls the roof fan to be closed.
In the air volume control device of the central purification system provided by the embodiment of the invention, the rotating speed of the roof fan is adjusted according to the running state of the first exhaust fume collecting hood positioned at the bottommost part in all the exhaust fume collecting hoods, so that the running state of the first exhaust fume collecting hood is normal, namely, the air volume in the connecting pipe of the first exhaust fume collecting hood is in the range of the set air volume value, and meanwhile, the sufficient power can be ensured; and the corresponding air valve is adjusted according to the air volume in the connecting pipe of the non-bottommost fume collecting hood, so that the air volume in the connecting pipe is in the range of the set air volume value, thereby ensuring that the air volume of each floor is kept balanced, realizing air volume self-adaption and being not influenced by the structure of a central purification system.
Referring to fig. 3, the present invention provides an air volume control method of a central purification system, which is applied to an air valve control module and comprises the following steps:
step S301, if the current fume collecting hood is opened, judging whether the current fume collecting hood is positioned at the bottommost part of all opened fume collecting hoods; if yes, executing step S302, otherwise executing step S305;
in this embodiment, step S301 specifically includes the following steps:
(1) receiving floor information of all opened smoke collecting hoods sent by a fan host, and acquiring the floor information of the current smoke collecting hood;
(2) and judging whether the current fume collecting hood is positioned at the bottommost part of all the opened fume collecting hoods according to the floor information of all the opened fume collecting hoods and the floor information where the current fume collecting hood is positioned.
Step S302, controlling an air valve of the current smoke collecting hood to open at a specified angle, and acquiring the air volume in a connecting pipe of the current smoke collecting hood;
step S303, determining the running state of the current fume collecting hood according to the air volume in the connecting pipe of the current fume collecting hood;
in this step, compare the amount of wind in the connecting pipe of current collection petticoat pipe with first amount of wind threshold value and second amount of wind threshold value, confirm the running state of current collection petticoat pipe, specifically do:
if the air volume in the connecting pipe of the current fume collecting hood is larger than the first air volume threshold value, determining that the current fume collecting hood is in an overload state; if the air volume in the connecting pipe of the current fume collecting hood is smaller than the second air volume threshold value, determining that the current fume collecting hood is in an under-pressure state; the second air volume threshold value is smaller than the first air volume threshold value; and if the air volume in the connecting pipe of the current fume collecting hood is between the first air volume threshold value and the second air volume threshold value, determining that the current fume collecting hood is in a normal state. The first air volume threshold may be Q0- σ, and the second air volume threshold may be Q0+ σ.
Step S304, the running state of the current smoke collecting hood is sent to a fan main machine, so that the fan main machine controls the rotating speed of the roof fan;
s305, acquiring the air volume in a connecting pipe of the current smoke collecting hood;
and S306, adjusting the opening angle of the air valve of the current smoke collecting hood according to the air volume in the connecting pipe of the current smoke collecting hood so as to enable the air volume in the connecting pipe of the current smoke collecting hood to be within a set air volume value range.
In this step, comparing the air volume in the connecting pipe of the current exhaust fume collecting hood with the first air volume threshold and the second air volume threshold, as shown in fig. 4, the method specifically includes the following steps:
step S401, judging whether the air volume in a connecting pipe of the current exhaust fume collecting hood is larger than a first air volume threshold value; if yes, executing step S402, otherwise executing step S403;
and S402, controlling the air valve of the current smoke collecting hood to reduce the opening angle.
Step S403, judging whether the air volume in the connecting pipe of the current exhaust fume collecting hood is smaller than a second air volume threshold value; if yes, go to step S404;
and step S404, controlling the air valve of the current smoke collecting hood to increase the opening angle.
Through the steps S401 to S404, the air volume in the connecting pipe of the current smoke collecting hood can be maintained between the second air volume threshold and the first air volume threshold, for example, Q0- σ to Q0+ σ, and can be kept basically unchanged.
The method of the central purification system provided by the embodiment of the invention sends the running state of the smoke collecting hood positioned at the bottommost part of all the opened smoke collecting hoods to the fan host machine so as to enable the fan host machine to adjust the rotating speed of the roof fan; and the corresponding air valve is adjusted according to the air volume in the connecting pipe of the non-bottommost fume collecting hood, so that the air volume in the connecting pipe is in a set air volume value range, thereby ensuring that the air volume of each floor is kept balanced, realizing air volume self-adaption and being not influenced by the structure of a central purification system.
Referring to fig. 5, an embodiment of the present invention provides an air volume control method for a central purification system, where the method is applied to a fan host, and includes:
step S501, acquiring the running state of the smoke collecting hood positioned at the bottommost part of all opened smoke collecting hoods;
and step S502, if the operation state of the smoke collecting hood positioned at the bottommost part is an abnormal state, adjusting the rotating speed of the roof fan until the operation state of the smoke collecting hood positioned at the bottommost part is normal.
In this step, the abnormal state of the fume collecting hood located at the bottommost part includes an overload state or an undervoltage state; if the state is an overload state, controlling the roof fan to reduce the rotating speed; and if the pressure is in an undervoltage state, controlling the roof fan to increase the rotating speed. When the operation state of the smoke collecting hood at the bottommost part is normal, the air volume in the connecting pipe is in the range of the set air volume value.
According to the air volume control method of the central purification system provided by the embodiment of the invention, the rotating speed of the roof fan is adjusted according to the operation state of the bottommost fume collecting hood in all the fume collecting hoods which are opened, so that the fume collecting hood is in a normal operation state, namely the air volume in the connecting pipe is in a set air volume value range, and meanwhile, the power of the roof fan can be ensured to be sufficient.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the method embodiment described above may refer to the corresponding process in the foregoing device embodiment, and is not described herein again.
The embodiment of the invention also provides a central purification system which comprises a roof fan, smoke collecting hoods arranged on all floors, each smoke collecting hood is connected with a public flue through a connecting pipe, an air valve is arranged on each connecting pipe, and the central purification system also comprises the air volume control device.
According to the air volume control device and method of the central purification system and the central purification system, the rotating speed of the roof fan is adjusted according to the running state of the bottommost fume collecting hood in all the fume collecting hoods which are opened, so that the running state of the first fume collecting hood is normal, namely the air volume in the connecting pipe of the first fume collecting hood is in the range of the set air volume value, and meanwhile, sufficient power can be ensured; and the corresponding air valve is adjusted according to the air volume in the connecting pipe of the non-bottommost fume collecting hood, so that the air volume in the connecting pipe is in the range of the set air volume value, thereby ensuring that the air volume of each floor is kept balanced, realizing air volume self-adaption and being not influenced by the structure of a central purification system.
The computer program product for performing the air volume control method of the central purification system provided by the embodiment of the present invention includes a computer readable storage medium storing a nonvolatile program code executable by a processor, where instructions included in the program code may be used to execute the method in the foregoing method embodiment, and specific implementation may refer to the method embodiment, and will not be described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a central purification system's amount of wind controlling means, its characterized in that, central purification system includes roof fan and sets up the collection petticoat pipe on each floor, every the collection petticoat pipe all is connected with public flue through the connecting pipe, be provided with the blast gate on the connecting pipe, the device includes: the air volume control system comprises a first air volume detection module, a second air volume detection module, a first air valve control module, a second air valve control module and a fan host;
the first air volume detection module is used for detecting first air volume in a connecting pipe of the opened first exhaust fume collecting hood in real time and sending the first air volume to the first air valve control module;
the second air volume detection module is used for detecting second air volume in a connecting pipe of the opened second smoke collecting hood in real time and sending the second air volume to the second air valve control module;
the first air valve control module is used for controlling an air valve of the first fume collecting hood to open a designated angle if the first fume collecting hood is positioned at the bottommost part of all opened fume collecting hoods, and determining the running state of the first fume collecting hood according to the first air volume; sending the running state of the first smoke collecting hood to the fan host; when the running state of the first fume collecting hood is normal, the first air volume is within a set air volume value range;
the second air valve control module is used for adjusting the opening angle of an air valve of the second fume collecting hood according to the second air volume if the second fume collecting hood is not positioned at the bottommost part of all opened fume collecting hoods so as to enable the second air volume to be within the set air volume value range;
and the fan host is used for adjusting the rotating speed of the roof fan when the running state of the first smoke collecting hood is in an abnormal state until the running state of the first smoke collecting hood is normal.
2. The air volume control method of the central purification system is applied to an air valve control module and comprises the following steps:
if the current fume collecting hood is opened, judging whether the current fume collecting hood is positioned at the bottommost part of all opened fume collecting hoods;
if so, controlling an air valve of the current fume collecting hood to open a specified angle, and acquiring the air volume in a connecting pipe of the current fume collecting hood;
determining the running state of the current smoke collecting hood according to the air volume in the connecting pipe of the current smoke collecting hood;
and sending the running state of the current smoke collecting hood to a fan host machine so that the fan host machine controls the rotating speed of the roof fan.
3. The method of claim 2, further comprising:
if the current fume collecting hood is not positioned at the bottommost part of all opened fume collecting hoods, acquiring the air volume in a connecting pipe of the current fume collecting hood;
and adjusting the opening angle of an air valve of the current smoke collecting hood according to the air volume in the connecting pipe of the current smoke collecting hood so as to enable the air volume in the connecting pipe of the current smoke collecting hood to be within a set air volume value range.
4. A method according to claim 2 wherein the step of determining whether the current fume collecting hood is located at the lowermost of all open fume collecting hoods comprises:
receiving floor information of all opened smoke collecting hoods sent by the fan host, and acquiring the floor information of the current smoke collecting hood;
and judging whether the current fume collecting hood is positioned at the bottommost part of all the opened fume collecting hoods or not according to the floor information of all the opened fume collecting hoods and the floor information where the current fume collecting hoods are positioned.
5. A method according to claim 2 wherein the step of determining the operating condition of the current fume collecting hood from the air volume in the connecting pipe of the current fume collecting hood comprises:
if the air volume in the connecting pipe of the current fume collecting hood is larger than a first air volume threshold value, determining that the current fume collecting hood is in an overload state;
if the air volume in the connecting pipe of the current exhaust fume collecting hood is smaller than a second air volume threshold value, determining that the current exhaust fume collecting hood is in an under-pressure state; wherein the second air volume threshold is less than the first air volume threshold;
and if the air volume in the connecting pipe of the current exhaust fume collecting hood is between the first air volume threshold value and the second air volume threshold value, determining that the current exhaust fume collecting hood is in a normal state.
6. A method according to claim 3 wherein the step of adjusting the opening angle of the damper of the current fume collecting hood according to the air volume in the connecting pipe of the current fume collecting hood comprises:
judging whether the air volume in a connecting pipe of the current exhaust fume collecting hood is larger than a first air volume threshold value or not;
and if the air volume is larger than the first air volume threshold value, controlling the air valve of the current smoke collecting hood to reduce the opening angle.
7. The method of claim 6, further comprising:
if the air volume in the connecting pipe of the current fume collecting hood is smaller than the first air volume threshold value, judging whether the air volume in the connecting pipe of the current fume collecting hood is smaller than a second air volume threshold value;
and if the air volume is smaller than the second air volume threshold value, controlling the air valve of the current smoke collecting hood to increase the opening angle.
8. The air volume control method of the central purification system is characterized in that the method is applied to a fan main machine and comprises the following steps:
acquiring the running state of the smoke collecting hood positioned at the bottommost part of all opened smoke collecting hoods;
and if the operation state of the smoke collecting hood positioned at the bottommost part is an abnormal state, adjusting the rotating speed of the roof fan until the operation state of the smoke collecting hood positioned at the bottommost part is normal.
9. The method according to claim 8, wherein the step of adjusting the rotation speed of the roof fan if the operation state of the lowermost fume collecting hood is an abnormal state includes:
if the running state of the smoke collecting hood positioned at the bottommost part is an overload state, controlling the roof fan to reduce the rotating speed;
and if the running state of the smoke collecting hood positioned at the bottommost part is an under-pressure state, controlling the roof fan to increase the rotating speed.
10. A central purification system comprises a roof fan and smoke collecting hoods arranged on each floor, wherein each smoke collecting hood is connected with a common flue through a connecting pipe, and an air valve is arranged on the connecting pipe, and the central purification system is characterized by further comprising an air volume control device according to claim 1.
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| CN111006290B (en) * | 2020-01-12 | 2021-08-24 | 李传聪 | Automatic control circuit of kitchen smoke exhaust fan |
| CN113357677B (en) * | 2020-03-02 | 2022-08-12 | 宁波方太厨具有限公司 | Outdoor host operation control method in centralized smoke exhaust system of building |
| CN112178718A (en) * | 2020-09-18 | 2021-01-05 | 华帝股份有限公司 | Control method of smoke exhaust collecting machine and smoke exhaust collecting machine system applying control method |
| CN114738806B (en) * | 2022-03-22 | 2024-06-25 | 杭州老板电器股份有限公司 | Central range hood system, control method thereof and resistance coefficient determining method |
| CN114811793B (en) * | 2022-04-18 | 2023-12-15 | 杭州老板电器股份有限公司 | Central exhaust system and control method |
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| CN2588243Y (en) * | 2002-11-15 | 2003-11-26 | 区子宏 | Environment protction type central fume exhauster system |
| JP4745846B2 (en) * | 2006-02-03 | 2011-08-10 | パナソニック株式会社 | Heating cooker and range hood that can be linked to each other |
| CN203891419U (en) * | 2014-05-22 | 2014-10-22 | 同济大学 | Pressure balanced type kitchen double-shaft centralized air-blowing and smoke-exhausting system device |
| CN106560657A (en) * | 2016-12-30 | 2017-04-12 | 杭州老板电器股份有限公司 | Central oil fume purification system and real-time automatic control mode thereof |
| CN107143897B (en) * | 2017-06-12 | 2022-10-28 | 中国科学院广州能源研究所 | Low-cost oil fume control system and control method for commercial kitchen |
| CN208108209U (en) * | 2018-01-31 | 2018-11-16 | 河南铁恒新材料科技有限公司 | A kind of energy conservation and environmental protection skyscraper oil smoke discharge system |
| CN109631120B (en) * | 2019-01-09 | 2020-02-07 | 杭州老板电器股份有限公司 | Centralized variable-frequency smoke discharge control method and device |
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