CN112628946A - Fresh air energy-saving control system and control method thereof - Google Patents
Fresh air energy-saving control system and control method thereof Download PDFInfo
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- CN112628946A CN112628946A CN202011449754.7A CN202011449754A CN112628946A CN 112628946 A CN112628946 A CN 112628946A CN 202011449754 A CN202011449754 A CN 202011449754A CN 112628946 A CN112628946 A CN 112628946A
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- 238000000034 method Methods 0.000 title claims description 11
- 238000009423 ventilation Methods 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims description 22
- 230000009471 action Effects 0.000 claims description 6
- 230000001965 increasing effect Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/30—Velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Fluid Mechanics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a fresh air energy-saving control system which comprises a fresh air fan, wherein an air feeder is arranged at an air outlet of the fresh air fan, a main ventilating duct is communicated with one side of the air feeder, which is far away from the fresh air fan, and branch ducts for entering all rooms are arranged on the main ventilating duct; an air flow velocity sensor for collecting feedback signals is fixedly arranged at the tail end of the main ventilation pipeline, and the air flow velocity sensor is in signal connection with a fresh air machine main controller for controlling a fresh air blower; the equipment can monitor the variation value of the air flow rate in the system in real time through the arranged air flow rate sensor device and feed back the variation value to the main controller of the fresh air blower; the air feeder can be operated in a variable load and variable frequency mode in real time under the control of the air feeder main controller; and then satisfy the demand of entire system to the new amount of wind, reduced the consumption of forced draught blower, greatly reduced running cost.
Description
Technical Field
The invention belongs to the technical field of fresh air control devices, and particularly relates to a fresh air energy-saving control system and a control method thereof.
Background
Among the correlation technique, the system that has the new trend function, for example, new fan, the air conditioner that has the new trend function etc. can make the room air produce the circulation, carries out filtration treatment and carries indoor to outdoor air on the one hand, and on the other hand discharges indoor dirty air outdoor to guarantee the fresh and clean of room air, provide healthy room air environment for people.
In the related art, the control of the fresh air aims at all users, and working condition energy-saving measures are not carried out on the system, so that the problem that when the load on the use side changes, the requirement on the fresh air volume also changes along with the change of the load on the use side, and the fresh air system is required to have strong adaptability to the fresh air volume; however, the existing fresh air system adopts a fixed air supply or quantitative air supply method, so that the air feeder cannot change in real time according to the load change demand of a user, and the energy consumption is high. How to effectively solve the problems is the problem which needs to be solved urgently in the field of the existing fresh air control device, and the fresh air control device has great economic benefit.
Disclosure of Invention
In order to achieve the purpose, the technical scheme adopted by the invention is that the fresh air energy-saving control system comprises a fresh air fan, wherein a blower is arranged in a fresh air fan unit, one side of the blower, which is far away from the fresh air fan, is communicated with a main ventilation pipeline, and the main ventilation pipeline is provided with branch pipelines for entering each room; the end of the main ventilation pipeline is fixedly provided with an air physical characteristic parameter change sensor used for acquiring feedback signals, and the sensor is connected with a blower main controller used for controlling a fresh air blower in a signal mode.
Preferably, the blower is a variable frequency blower.
Preferably, the air physical characteristic parameter variation sensor is: an air flow rate sensor and an air pressure sensor.
Preferably, an air volume valve is arranged on the branch pipeline, and the air volume valve is controlled by an air volume valve main controller installed in each room.
A control method of a fresh air energy-saving control system comprises the following steps,
s1, acquiring a fresh air flow velocity change value in the pipeline through an air flow velocity sensor device, and feeding back the fresh air flow velocity change value to a comparison unit of a fresh air machine main controller through an input unit;
s2, judging whether the flow rate of fresh air in the system is larger than a set threshold value of a main controller of the fresh air machine, and acquiring a comparison result N;
and S3, transmitting a signal of the comparison result N to a fresh air machine main controller through the comparison result N obtained in the step S2, wherein the fresh air machine main controller controls the working frequency of air supply of a fresh air machine.
Preferably, if the comparison result N obtained in step S2 is greater than the set threshold, the fresh air machine main controller controls the blower to perform a frequency increasing operation;
the air feeder of the fresh air machine performs a primary frequency increasing action, and after the frequency runs for a certain time, the flow velocity change value of fresh air of the air velocity sensor is obtained again and fed back to the comparison unit of the main controller of the fresh air machine;
step S2 and the following steps are repeated.
Preferably, if the comparison result N obtained in step S2 is equal to the set threshold, the blower is operated while maintaining the original frequency state.
Preferably, if the comparison result N obtained in step S2 is smaller than the set threshold; the main controller of the fresh air machine controls the air feeder to perform a frequency reduction action;
after the air feeder performs a frequency reduction action once and maintains the frequency to operate for a certain time, the flow rate change value of fresh air in the system is obtained again and fed back to the comparison unit of the main controller of the fresh air feeder; step S2 and the following steps are repeated.
An air flow rate sensor module is installed in the main air duct, so that a variable-frequency air feeder is controlled, and variable-frequency and variable-load operation is realized.
Has the advantages that: compared with the prior art, the air flow velocity sensor device has the advantages and positive effects that the air flow velocity sensor device can monitor the air flow velocity in the system in real time and feed the air flow velocity back to the main controller of the fresh air fan; the variable-load and variable-frequency operation of the air feeder can be realized through the control of the main controller of the fresh air machine; and then satisfy the demand of entire system to the new amount of wind, reduced the consumption of forced draught blower, greatly reduced running cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic view of an overall structure of a fresh air energy-saving control system according to this embodiment;
fig. 2 is a control schematic diagram of a fresh air energy-saving control system provided in this embodiment;
in the attached drawing, 1-a fresh air fan, 2-a main ventilating duct, 3-a branch duct, 4-a room, 5-an air volume valve, 6-an air volume valve main controller, 7-a fresh air fan blower main controller and 8-an air flow velocity sensor.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Examples
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the following examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
The scheme provides a fresh air energy-saving control system which comprises a fresh air fan 1, wherein a blower 101 is arranged in the fresh air fan 1, a main ventilation pipeline 2 is communicated with one side, far away from the fresh air fan 1, of the blower 101, and branch pipelines 3 used for entering each room 4 are arranged on the main ventilation pipeline 2; the end of main air pipe 2 is fixed and is provided with air physical characteristic parameter change sensor 8 that is used for gathering feedback signal, just sensor 8 signal connection has a forced draught blower master controller 7 that is used for controlling new fan.
Further, the blower 101 is a variable frequency blower.
Further, the air physical characteristic parameter variation sensor is: one of an air flow rate sensor, an air pressure sensor or other forms of sensors capable of detecting the variation of the physical characteristic parameters of the air.
Furthermore, an air volume valve 5 is arranged on the branch pipeline, and the air volume valve 5 is controlled by an air volume valve main controller 6 installed in each room.
A control method of a fresh air energy-saving control system comprises the following steps,
s1, acquiring a fresh air flow velocity change value in the pipeline through the air flow velocity sensor device 8, and feeding back the fresh air flow velocity change value to a comparison unit of the air blower main controller 7 through the input unit;
s2, judging whether the flow rate of fresh air in the system is greater than a set threshold value of a main controller 7 of the air blower, and obtaining a comparison result N;
and S3, transmitting a signal of the comparison result N to a fresh air machine main controller through the comparison result N obtained in the step S2, wherein the fresh air machine main controller controls the working frequency of air supply of a fresh air machine.
Further, if the comparison result N obtained in step S2 is greater than the set threshold, the fresh air machine main controller 7 controls the blower 101 to perform a frequency increasing operation;
the air feeder of the fresh air machine performs a primary frequency increasing action, and after the frequency runs for a certain time, the flow velocity change value of fresh air of the air velocity sensor is obtained again and fed back to the comparison unit of the main controller of the fresh air machine;
step S2 and the following steps are repeated.
Further, if the comparison result N obtained in step S2 is equal to the set threshold, the blower 101 is operated in the original frequency state.
Further, if the comparison result N obtained in step S2 is smaller than the set threshold; the main controller 7 of the fresh air machine controls the blower 101 to perform a frequency reduction action;
after the blower 101 executes a frequency reduction action once and maintains the frequency to operate for a certain time, the flow rate change value of fresh air in the system is obtained again and fed back to the comparison unit of the fresh air main controller 7; step S2 and the following steps are repeated.
Furthermore, the running time after the frequency change is generally set according to different application scenes; no particular time limitation is made here.
As an extension of this embodiment, when the fresh air volume demand increases, the air velocity sensor arranged at the end of the main ventilation duct can feed back the fresh air velocity variation value to the fresh air main controller in real time, and the fresh air main controller can adjust the frequency of the blower of the fresh air blower to realize variable-frequency variable-load operation of the blower; the control principle of the blower of the new blower can be directly or indirectly known by the person skilled in the art through the embodiments.
In the embodiment, the air flow velocity sensor device can monitor the air flow velocity in the system in real time and feed the air flow velocity back to the main controller of the fresh air machine; the blower can be operated in real time at variable load and variable frequency under the control of the main controller of the fresh air blower; and then satisfy the demand of entire system to the new amount of wind, reduced the consumption of forced draught blower, greatly reduced running cost.
In addition, it should be noted that the electrical components appearing in the document are all electrically connected with an external master controller and 220V commercial power or 380V industrial power, and the master controller of the fresh air machine can be a conventional known device for controlling a computer, a single chip microcomputer and the like, and is not limited to this device.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may apply the equivalent embodiments modified or modified by the above disclosure to other fields, preferably the air flow sensor or the air pressure sensor, and not limited to these two air sensors, but any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the present invention.
Claims (9)
1. A fresh air energy-saving control system comprises a fresh air fan (1), and is characterized in that a blower (101) is arranged in the fresh air fan (1), one side, far away from the fresh air fan (1), of the blower (101) is communicated with a main ventilation pipeline (2), and branch pipelines (3) used for entering each room (4) are arranged on the main ventilation pipeline (2); the end of main air pipe (2) is fixed and is provided with air physical characteristic parameter change sensor (8) that are used for gathering feedback signal, just sensor (8) signal connection has forced draught blower master controller (7) that are used for controlling new fan.
2. The fresh air energy-saving control system according to claim 1, characterized in that: the blower (101) is a variable-frequency fan.
3. The fresh air energy-saving control system according to claim 1, wherein the air physical characteristic parameter change sensor is: an air flow rate sensor and an air pressure sensor.
4. The fresh air energy-saving control system according to claim 1, characterized in that: an air volume valve (5) is arranged on the branch pipeline, and the air volume valve (5) is controlled by an air volume valve main controller (6) installed in each room.
5. The fresh air energy-saving control system according to claim 1, characterized in that: an adjustable time timer for starting the air flow rate sensor device (8) at fixed time is also arranged in the air feeder main controller of the new air blower.
6. A control method of a fresh air energy-saving control system as claimed in claim 1, characterized in that: comprises the following steps of (a) carrying out,
s1, acquiring a fresh air flow velocity change value in the pipeline through an air flow velocity sensor device (8), and feeding back the fresh air flow velocity change value to a comparison unit of a fresh air machine main controller (7) through an input unit;
s2, judging whether the fresh air flow velocity change value in the system is larger than a set threshold value of a fresh air machine main controller (7) or not, and acquiring a comparison result N;
and S3, transmitting a signal of the comparison result N to a blower main controller according to the comparison result N acquired in the step S2, wherein the blower main controller controls the working frequency of the blower.
7. The control method of the fresh air energy-saving control system according to claim 6, wherein if the comparison result N obtained in the step S2 is greater than the set threshold, the fresh air machine main controller (7) controls the blower (101) to perform a frequency increasing operation;
the air feeder of the fresh air machine performs a primary frequency increasing action, and after the frequency runs for a certain time, the flow velocity change value of fresh air of the air velocity sensor is obtained again and fed back to the comparison unit of the main controller of the fresh air machine;
step S2 and the following steps are repeated.
8. The control method of a fresh air energy-saving control system according to claim 6, wherein if the comparison result N obtained in step S2 is equal to the set threshold, the blower (101) is kept operating in the original frequency state.
9. The control method of the fresh air energy-saving control system according to claim 6, wherein if the comparison result N obtained in the step S2 is less than the set threshold value; the fresh air machine main controller (7) controls the air feeder (101) to execute a frequency reduction action;
the air feeder (101) performs a frequency reduction action once, maintains the frequency to run for a certain time, and then obtains the flow rate change value of fresh air in the system again and feeds the change value back to the comparison unit of the fresh air main controller (7); step S2 and the following steps are repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011449754.7A CN112628946A (en) | 2020-12-11 | 2020-12-11 | Fresh air energy-saving control system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011449754.7A CN112628946A (en) | 2020-12-11 | 2020-12-11 | Fresh air energy-saving control system and control method thereof |
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| CN112628946A true CN112628946A (en) | 2021-04-09 |
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| CN210135648U (en) * | 2019-03-29 | 2020-03-10 | 上海理工大学 | Variable air volume fresh air system based on number feedback adjustment |
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| CN214406426U (en) * | 2020-12-11 | 2021-10-15 | 北京康宅建筑科技有限公司 | Healthy new trend becomes load running device |
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2020
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203586433U (en) * | 2013-12-03 | 2014-05-07 | 苏州英科工程技术服务有限公司 | Fresh air conveying and control system of central air conditioning |
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