CN111578429A - Intelligent air supply system for operating room and control method thereof - Google Patents
Intelligent air supply system for operating room and control method thereof Download PDFInfo
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- CN111578429A CN111578429A CN202010303997.3A CN202010303997A CN111578429A CN 111578429 A CN111578429 A CN 111578429A CN 202010303997 A CN202010303997 A CN 202010303997A CN 111578429 A CN111578429 A CN 111578429A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007791 dehumidification Methods 0.000 claims description 20
- 238000003908 quality control method Methods 0.000 claims description 10
- 238000013500 data storage Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 21
- 238000001356 surgical procedure Methods 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 15
- 238000009423 ventilation Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000003303 reheating Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 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
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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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
-
- 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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
- F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
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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)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an intelligent air supply system for an operating room and a control method thereof, wherein the system comprises: the air outlet of the fresh air unit is provided with a first air volume sensor; the first air inlet of the circulating unit is provided with a first air quantity sensor and a first air inlet control valve in sequence in the direction of outward extension, and the first air inlet is provided with a first air return control valve; the operating room air supply device comprises an air outlet device provided with a third air quantity sensor and a differential pressure gauge; and the intelligent control module is used for acquiring total fresh air data, branch fresh air data, operating room air volume data and operating room internal and external pressure difference data, controlling the revolution of the fresh air unit driving motor and the circulating unit driving motor, adjusting the rotating opening of the fresh air control valve and the return air control valve, and maintaining the air supply volume, the air exchange number, the air speed and the pressure difference of the operating room. The invention can flexibly and accurately control the air supply quality of single surgery and greatly reduce the energy consumption.
Description
Technical Field
The invention relates to the technical field of air cleaning treatment in an operating room, in particular to an intelligent air supply system for the operating room and a control method thereof.
Background
A common fresh air unit of a general air supply system of an operating room conveys fresh air to more than two circulating units in the operating room, and when the operating rate is low and only one circulating unit needs to be started, the fresh air unit also runs in a full load mode, so that the energy consumption of the fresh air system is wasted greatly. And when the air supply system of the operating room is in operation, the air supply quality of the operating room can be changed along with the increasing use resistance of the primary filter screen, the intermediate filter, the high-efficiency filter and the return air filter, and the parameters required by national building technical specification GB50333-2013 of the clean operating department of hospitals cannot be met.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an intelligent air supply system for an operating room, which can reduce energy consumption and ensure air supply quality of the operating room.
The invention also provides an intelligent control method of the operating room air supply system related to the operating room intelligent air supply system.
According to the embodiment of the first aspect of the invention, the intelligent air supply system for the operating room comprises: the air supply system comprises a fresh air unit, a first air quantity sensor, a first air; the air supply device of the operating room comprises the air outlet device, the air return device and a pressure difference meter, wherein a third air quantity sensor is arranged on the air outlet device; the circulating unit is used for air supply and return treatment of a single operating room, a first air inlet of the circulating unit is connected with the fresh air main pipe through a first pipeline, an air outlet of the circulating unit is connected with an air outlet device of a corresponding operating room through a second pipeline, a second air inlet of the circulating unit is connected with an air return device of a corresponding operating room through a third pipeline, a second air quantity sensor and a fresh air control valve are sequentially arranged on the first pipeline in a direction extending outwards from the first air inlet, a return air control valve is arranged on the third pipeline, and a circulating unit driving motor is arranged in the circulating unit; the intelligent control module is used for collecting total fresh air data through the first air volume sensor, collecting branch fresh air data through the second air volume sensor, collecting operating room air volume data through the third air volume sensor, collecting differential pressure data inside and outside the operating room through the differential pressure gauge, controlling the revolution of the fresh air unit driving motor according to total fresh air data, controlling the revolution of the circulating unit driving motor according to the branch fresh air data, the operating room air volume data and the differential pressure data, adjusting the rotating opening degree of the fresh air control valve and the return air control valve, and maintaining the air supply volume, the air exchange number, the air speed and the differential pressure of the operating room.
The intelligent air supply system for the operating room provided by the embodiment of the invention at least has the following beneficial effects: the number of revolutions of the driving motor of the fresh air handling unit is adjusted according to the total required air volume of the operating room and the current actual air volume, so that the total energy consumption is saved; the air quantity data and the pressure difference data of the operating room are adjusted according to the revolution of the driving motor of the corresponding circulating unit and the opening degree of the fresh air control valve and the air return control valve, so that the energy is saved, and meanwhile, the air supply quality is guaranteed.
According to some embodiments of the invention, the intelligent control module comprises: the fresh air unit total air volume control module is used for detecting the opening time of an operating room, calculating the total air volume, and adjusting the revolution of a driving motor of the fresh air unit according to the total fresh air data; the operating room air quality control module is used for obtaining the air supply volume of an operating room, the air exchange number of the operating room and the air speed of the operating room according to the air quantity data of the operating room, controlling the rotating opening of the fresh air control valve according to the air supply volume of the operating room and the branch fresh air data, adjusting the rotating number of the driving motor of the circulating unit according to the air exchange number of the operating room and the air speed of the operating room, and controlling the opening of the return air control valve according to the pressure difference data. The number of revolutions of the driving motor is controlled according to the number of opening times of the operating room, so that the total energy consumption of the air supply system is saved; according to the air quantity data and the pressure difference data of the operating room, the revolution of the driving motor of the circulating unit and a fresh air control valve and a return air control valve aiming at the circulating unit are flexibly controlled, and the energy consumption is saved under the condition of ensuring the air supply quality of the operating room.
According to some embodiments of the invention, the intelligent control module controls the number of revolutions of the fresh air handling unit and the circulating unit driving motor through speed regulation current signals. The energy consumption of the driving motor of the fresh air unit and the driving motor of the circulating unit is reduced under the condition of safely and conveniently adjusting the revolution of the driving motor.
According to some embodiments of the invention, the operating room wind quality control module further comprises: and the control data storage module is used for recording the adjusted revolution of the circulating unit driving motor, the opening of the fresh air control valve and the opening of the return air control valve. The revolution of the driving motor of the circulating unit, the opening degree of the fresh air control valve and the opening degree of the return air control valve are recorded, the fresh air control valve and the return air control valve can be directly read for use when the machine is started next time, and energy consumption caused by repeated adjustment is saved.
According to some embodiments of the invention, the fresh air handling unit comprises: the device comprises a main cold source device and an auxiliary cold source device, wherein the auxiliary cold source device is used for detecting the temperature of the main cold source and is put into use when the temperature of the main cold source is higher than the preset dehumidification temperature. The problem that the circulating unit needs secondary dehumidification to cause temperature sudden cooling and sudden heating of the operating room due to incomplete dehumidification of the fresh air unit is avoided, and extra energy consumption caused by temperature change of the operating room in the secondary dehumidification is saved.
The intelligent control method for the air supply system of the operating room according to the embodiment of the second aspect of the invention comprises the following steps: detecting the number of opening intervals of an operating room to obtain the total amount of required air supply, acquiring the total fresh air data of an air supply outlet of a fresh air unit through a first air quantity sensor, and adjusting the revolution of a driving motor of the fresh air unit according to the total fresh air data; collecting branch fresh air data of a first air inlet of a circulating unit connected with the fresh air unit through a second air volume sensor, collecting air volume data of an operating room through a third air volume sensor, and collecting pressure difference data inside and outside the operating room through a pressure difference meter; obtaining the air output of the operating room, the air exchange number of the operating room and the air speed of the operating room according to the air quantity data of the operating room; controlling the opening of the fresh air control valve according to the air supply quantity of the operating room and the branch fresh air data, adjusting the revolution of a driving motor of a circulating unit according to the air exchange number of the operating room and the air speed of the operating room, and controlling the opening of the return air control valve according to the pressure difference data.
The intelligent control method of the air supply system of the operating room, provided by the embodiment of the invention, at least has the following beneficial effects: the number of revolutions of the driving motor of the fresh air handling unit is adjusted according to the total required air volume of the operating room and the current actual air volume, so that the total energy consumption is saved; the air quantity data and the pressure difference data of the operating room are adjusted according to the revolution of the driving motor of the corresponding circulating unit and the opening degree of the fresh air control valve and the air return control valve, so that the energy is saved, and meanwhile, the air supply quality is guaranteed.
According to some embodiments of the invention, the number of revolutions of the fresh air handling unit drive motor and the number of revolutions of the circulating unit drive motor are both controlled by a regulated current signal. The revolution of the driving motor can be conveniently and safely adjusted by adjusting the current signal, and the energy consumption of the driving motor of the fresh air unit and the driving motor of the circulating unit is reduced.
According to some embodiments of the invention, the method for controlling the rotation opening degree of the fresh air control valve according to the air output of the operating room and the branch fresh air data comprises the following steps: if the air supply volume of the operating room has deviation, judging whether the branch fresh air data is the preset branch air supply volume, and if not, adjusting the opening of the fresh air control valve until the branch fresh air data is equal to the preset branch air supply volume. The air supply volume of the operating room is ensured to meet the requirement by controlling the fresh air control valve.
According to some embodiments of the invention, the method of controlling the opening of the return air control valve according to the pressure difference data comprises: if the differential pressure data is smaller than the preset differential pressure, closing the return air control valve; and if the differential pressure data is greater than the preset differential pressure, opening the return air control valve greatly. And controlling a return air control valve to maintain the pressure difference meeting the requirement in the operating room.
According to some embodiments of the invention, further comprising: recording the adjusted revolution of the driving motor of the circulating unit, the opening of the fresh air control valve and the opening of the return air control valve; whether main cold source temperature in the detection fresh air handling unit is higher than preset dehumidification temperature, if detect and be higher than preset dehumidification temperature, put into use supplementary cold source. The revolution of a driving motor of the circulating unit and the opening degrees of the fresh air control valve and the return air control valve are recorded, so that the circulating unit can be directly read and used when being started next time, and energy consumption caused by repeated adjustment is saved; the auxiliary cold source is automatically put into use, the problem that the circulating unit needs secondary dehumidification to cause sudden cooling and sudden heating of the operating room due to incomplete dehumidification of the fresh air unit is avoided, and extra energy consumption caused by temperature change of the operating room in the secondary dehumidification is saved.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of the piping connections of various devices in a system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the connection of an intelligent control module to other modules in the system according to an embodiment of the present invention;
FIG. 3 is a block diagram of a sub-module of an intelligent control module in the system according to an embodiment of the present invention;
FIG. 4 is a flow chart of the main steps of a method according to an embodiment of the present invention;
fig. 5 is a schematic operation flow diagram of the method in the embodiment of the present invention.
Reference numerals:
a fresh air handling unit 100, a fresh air handling unit driving motor 110, an air inlet 120, and an air outlet 130;
the air conditioner comprises a circulating unit 200, a circulating unit driving motor 210, a first air inlet 220, a second air inlet 230 and an air outlet 240;
an operating room air supply device 300, an air outlet device 310, an air return device 320, a differential pressure gauge 330 and a third air quantity sensor 311;
a first air quantity sensor 410, a second air quantity sensor 420, a fresh air control valve 430 and a return air control valve 440;
a supply manifold 510, a first duct 520, a second duct 530, and a third duct 540;
the system comprises an intelligent control module 600, a fresh air unit total air volume control module 610, an operating room air quality control module 620 and a control data storage module 630;
and an exhaust 710.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
The noun explains:
EC motor, EC, Electrical communication, electronically commutated motor.
Referring to fig. 1, the system according to the embodiment of the present invention includes a fresh air handling unit 100 for supplying fresh air to all operating rooms (herein, the operating rooms include clean corridors) and a circulation unit 200 for a single operating room, and the fresh air handling unit 100, the circulation unit 200, and the operating rooms are connected by pipes (see the solid line portion in fig. 1). The air outlet 130 of the fresh air handling unit 100 is provided with a fresh air main pipe 510, and a first air volume sensor 410 is arranged in the fresh air main pipe 510 and used for monitoring the problem of fresh air currently sent out by the fresh air handling unit 100. A first pipeline 520 is arranged at the first air inlet 220 of the circulating unit 200; this first pipeline 520 links to each other with new trend house steward 510, is provided with new trend control valve 430 respectively along the air inlet flow direction, and second air sensor 420, contrary wind direction is outwards set gradually second air sensor 420 and new trend control valve 430 from first air intake promptly. The second air volume sensor 420 is used for monitoring the branch fresh air flow of the branch where the circulator group is located, and the fresh air control valve 430 is used for controlling the branch fresh air flow of the branch where the circulator group is located. The air outlet 240 of the circulation unit 200 is provided with a second pipeline 530, the second pipeline leads to an operating room, the end of the second pipeline is connected with the air outlet device 310 of the operating room, and the air outlet device 310 of the operating room is provided with a third air volume sensor 311. The third air volume sensor 311 is used for monitoring air volume data of the operating room. The air supply device 300 in the operating room further comprises an air return device 320, which is arranged at the air return opening in the operating room and can be an air filter. The operating room air return device 320 is connected to the second air inlet 230 (i.e. the air return) of the circulator through a third pipe 540, and a return air control valve 440 is disposed in the third pipe 540 for controlling the flow of the operating room return air. The air supply device in the operating room further comprises a differential pressure gauge 330 for measuring the pressure difference between the inside and the outside of the operating room. The system of the embodiment of the present invention further includes an intelligent control module 600, configured to receive the sensor data, including the sensing data of the first air volume sensor 410, the second air volume sensor 420, the third air volume sensor 311, and the differential pressure gauge 330, and control the opening degrees of the fresh air control valve 430 and the return air control valve 440, and the rotation numbers of the fresh air unit driving motor 110 and the circulator unit driving motor 210. For ease of understanding, only a portion of the control lines (see dashed portion) are identified, not identified in fig. 1. It should be understood that, in the embodiment of the present invention, the air supply system is not limited to include 2 operating rooms, and may also include 1 operating room or more than 3 operations, and corresponding circulating units, pipes, and corresponding sensing devices may be correspondingly added. The connection relationship between the intelligent control module 600 and other devices in the system according to the embodiment of the present invention is illustrated by the connection line without arrows in fig. 2, and the direction of the arrows in fig. 2 indicates the direction of the wind flow. The intelligent control module 600 is connected with the first air volume sensor 410, the second air volume sensor 420 and the operating room air supply device 300 (actually, the third air volume sensor 311 and the pressure difference meter 330 therein), connected with the fresh air unit driving motor 110 and the circulating unit driving motor 210, and connected with the fresh air control valve 410 and the return air control valve 420; the fresh air handling unit drive motor 110 is inside the fresh air handling unit 100, and for simplicity of understanding, is directly illustrated in fig. 2 as the intelligent control module 600 connected to the fresh air handling unit 100, and for the same reasons as described above, is directly illustrated in fig. 2 as the intelligent control module 600 connected to the circulation unit 210. The intelligent control module 600 is used for collecting total fresh air data through the first air volume sensor 410, collecting branch fresh air data through the second air volume sensor 420, collecting operating room air volume data through the third air volume sensor 311, collecting differential pressure data inside and outside the operating room through the differential pressure gauge 330, controlling the revolution of the fresh air unit driving motor 110 according to the total fresh air data, controlling the revolution of the circulating unit driving motor 210 according to the branch fresh air data, the operating room air volume data and the differential pressure data, adjusting the rotating opening degree of the fresh air control valve 430 and the return air control valve 440, and maintaining the air supply volume, the air exchange number, the air speed and the differential pressure of the operating room. Referring to fig. 1, the third duct is also provided with an exhaust device 710, such as an exhaust fan, for exhausting the return air from the operating room.
In some embodiments of the present invention, the fresh air handling unit drive motor and the circulating unit drive motor may employ EC motors.
The intelligent control module 600, referring to fig. 3, includes: a fresh air handling unit total air volume control module 610 and an operating room air quality control module 620. The total air volume control module 620 of the fresh air handling unit is used for detecting the number of the opening rooms of the operating room, calculating the total air volume, and adjusting the revolution of the driving motor 110 of the fresh air handling unit according to the total fresh air data. The revolution of the fresh air driving motor 110 is adjusted according to the requirement, the power of the fresh air handling unit is flexibly controlled, and the energy consumption is reduced. And the operating room wind quality control module 620 is used for controlling the circulating unit 200 to enable the operating room wind quality to meet the requirement. The operating room air quality control module obtains the air supply volume of the operating room, the ventilation number of the operating room and the air speed of the operating room according to the air quantity data of the operating room, controls the rotating opening of the fresh air control valve 430 according to the air supply volume of the operating room and the branch fresh air data, adjusts the rotating speed of the circulating unit driving motor 210 according to the ventilation number of the operating room and the air speed of the operating room, and controls the opening of the return air control valve 440 according to the pressure difference data. The operating room wind quality control module 620 adjusts the revolution of the circulating unit driving motor 210, and energy consumption can be effectively saved.
Referring to fig. 3, the smart control module 600 further includes: and the control data storage module 630 is used for recording the adjusted revolution of the driving motor of the circulating unit, the opening of the fresh air control valve and the opening of the return air control valve. Therefore, the numerical values can be directly read next time, and energy waste caused by repeated allocation is avoided.
In an embodiment of the present invention, the fresh air handling unit 120 further includes: the device comprises a main cold source device and an auxiliary cold source device, wherein the auxiliary cold source device is used for detecting the temperature of the main cold source and is put into use when the temperature of the main cold source is higher than the preset dehumidification temperature. Aiming at the problem that the dehumidification of a fresh air unit is not thorough, secondary dehumidification is needed by a circulating unit, but the temperature in a secondary dehumidification operating room is suddenly cooled and suddenly heated, so that a large amount of energy is consumed. The loss caused by reheating after dehumidification is not only the loss of heat, but also the waste is doubled, and the energy loss caused by cold and heat compensation in summer accounts for more than 50% of the total energy consumption of the air conditioner. The air supply temperature difference of the operating rooms of different levels is different according to the fact that the dew point temperature of the circulating unit is generally 13.5 ℃. The air supply temperature of a hundred-grade operating room is 21 ℃, the reheating temperature is 7.5 ℃, the circulating air volume is 10000CMH, and the waste energy consumption is about 35 KW. The air supply temperature of a thousand-level operating room is 18 ℃, the reheating temperature is 4.5, the circulating air volume is 4000CMH, and the waste energy consumption is about 8.4 KW. The ten thousand-level air supply temperature is 16 ℃, the reheating temperature is 2.5 ℃, the circulating air volume is 2800CMH, and the waste energy consumption is about 3.3 KW. The automatic input of the auxiliary cold source can reduce a large amount of energy consumption.
Method of an embodiment of the invention referring to fig. 4, comprising the steps of: detecting the number of opening intervals of the operating room to obtain the total amount of required air supply, acquiring the total fresh air data of an air supply outlet of the fresh air unit through a first air quantity sensor, and adjusting the revolution of a driving motor of the fresh air unit according to the total fresh air data; collecting branch fresh air data of a first air inlet of a circulating unit connected with the fresh air unit through a second air volume sensor, collecting air volume data of an operating room through a third air volume sensor, and collecting pressure difference data inside and outside the operating room through a pressure difference meter; obtaining the air output of the operating room, the air exchange number of the operating room and the air speed of the operating room according to the air quantity data of the operating room; the opening of the fresh air control valve is controlled according to the air output of the operating room and the branched fresh air data, the revolution of the driving motor of the circulating unit is adjusted according to the air exchange number of the operating room and the air speed of the operating room, and the opening of the return air control valve is controlled according to the pressure difference data.
In the embodiment of the present invention, referring to fig. 5, when the circulating unit 200 is started, the fresh air handling unit 100 is started in a linkage manner, that is, when the fresh air handling unit 100 is not started, the fresh air handling unit 200 is also started together with the circulating unit. The intelligent control module can monitor the total amount of fresh air and the wind quality of the operating room between the units at the same time. The monitoring and adjustment of the total amount of fresh air are shown in the following example.
In one embodiment of the present invention, there are 8 circulation units and one fresh air unit, each circulation unit corresponds to one operating room or clean corridor, and the corresponding operating room has: 1 hundred-level operating room, 2 thousand-level operating room, 4 ten thousand-level operating room and 1 hundred thousand-level clean corridor. All operating rooms and clean corridors share one fresh air unit to take fresh air. According to the requirements of construction technical specification GB50333-2013 of clean operating departments of hospitals, the fresh air volume required by hundred-grade operating rooms, thousand-grade operating rooms and ten thousand-grade operating rooms is 15-20m 3/h. When the operation amount is small, firstly, the intelligent control module automatically detects the number of opening rooms of the operating room, the intelligent control module calculates to obtain the required total fresh air volume, the intelligent control module detects that only one operating room is opened, the set value of the total fresh air volume is set to be 15-20m3/h, the driving motor 110 of the fresh air unit is controlled to rotate, and the first air volume sensor 410 detects the current total fresh air volume and feeds back the current total fresh air volume to the intelligent control module 600. The intelligent control module 600 compares the current total fresh air volume with the set total fresh air volume. When the current total fresh air volume is less than the set total fresh air volume, the current of the speed regulation switch of the driving motor 110 of the fresh air handling unit is adjusted to be 4-20mA, the current is increased, and the rotating speed of the driving motor 110 of the fresh air handling unit is accelerated. When the current total fresh air volume is equal to the set total fresh air volume, the intelligent control module 600 keeps the output of the speed-regulating current of the driving motor 110 of the fresh air handling unit. When two or more than two operation rooms are opened, the intelligent control module can set the total fresh air volume set value to be more than 30-40m 3/h. Each air quantity sensor 410 detects the current total fresh air quantity and feeds back the current total fresh air quantity to the intelligent control module 600. The intelligent control module compares the current total fresh air volume with the set total fresh air volume. When the current total fresh air volume is smaller than the set total fresh air volume, the intelligent control module adjusts the current of the speed regulation switch of the driving motor 110 of the fresh air handling unit to be 4-20mA, the current is increased, and the rotating speed of the driving motor 110 of the fresh air handling unit is accelerated. When the current total fresh air volume is equal to the set total fresh air volume, the intelligent control module keeps the output of the speed regulation current of the driving motor 110 of the fresh air handling unit.
On the other hand, referring to fig. 5, the wind quality control flow for the single operating room is as follows: after the circulator group 200 is started, the second air volume sensor 420, the third air volume sensor 311 and the differential pressure gauge 330 are started. The intelligent control module controls the revolution of the driving motor 210 of the circulating unit to return to the state of last shutdown, and the return air control valve 440 and the fresh air control valve 430 return to the opening positions before last shutdown. The air supply amount of the operating room, the air speed of the operating room and the air exchange number of the operating room are calculated through the air supply data of the operating room collected by the third air volume sensor, and the differential pressure data of the operating room are collected by the differential pressure gauge 330. And the intelligent control module firstly detects whether the air volume collected by the second air volume sensor is equal to the set branch fresh air volume or not under the condition that the air volume of the operating room is deviated. If not, the fresh air control valve 430 is controlled to rotate for 0-90 degrees until the branch fresh air volume is equal to the set branch fresh air volume. Wherein, the fresh air control valve opening is closed when 0 degree, is 90 for the complete open mode, and return air blast gate is similar to this. And when the fresh air volume is met, detecting whether the air exchange number of the operating room is equal to the set air exchange number, and if not, adjusting a 4-20mA speed regulation current signal of the driving motor 210 of the circulating unit. When the ventilation number is smaller than the set ventilation number, the circulation unit driving motor 210 accelerates the rotation speed. When the ventilation number is greater than the set ventilation number, the circulation unit driving motor 210 reduces the rotation speed. When the number of air changes is equal to the set number of air changes, the circulator group drive motor 210 maintains the existing rotation speed. When the ventilation number is satisfied, whether the operating room pressure difference is equal to the set pressure difference is detected, and when the pressure difference value is smaller than the set pressure difference value, the return air control valve 440 is closed. When the differential pressure value is greater than the set differential pressure value, the return air control valve 440 is opened large. When the differential pressure value is equal to the set differential pressure value, the return air control valve 440 remains unchanged. When the operating room pressure difference also meets the set value, the intelligent control module 600 records the revolution of the circulating unit driving motor 210, the current opening positions of the return air control valve 440 and the fresh air control valve 430.
In the air supply system of the operating room, the primary filter screen and the intermediate filter are generally replaced once in 3-6 months, the high efficiency filter is generally replaced once in 1-2 years, after the filter is used for a long time, a lot of dust is accumulated, and the wind resistance is increased, in the embodiment of the invention, the air supply system further comprises: after the insufficient wind speed is detected, the intelligent control module increases the rotating speed of the driving motor of the circulating unit, so that the air supply amount is increased, and the set parameter requirements of the operating room are always kept.
In the method of the embodiment of the present invention, the method further includes: whether main cold source temperature in the detection fresh air handling unit is higher than preset dehumidification temperature, if detect and be higher than preset dehumidification temperature, put into use supplementary cold source. The energy consumption waste caused by sudden cooling and sudden heating of the operating room due to the fact that the circulating unit needs secondary cooling because the temperature of the fresh air unit cannot meet the dehumidification requirement can be avoided.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The utility model provides an operating room intelligence air supply system which characterized in that includes:
the air supply system comprises a fresh air unit, a first air quantity sensor, a first air;
the air supply device of the operating room comprises the air outlet device, the air return device and a pressure difference meter, wherein a third air quantity sensor is arranged on the air outlet device;
the circulating unit is used for air supply and return treatment of a single operating room, a first air inlet of the circulating unit is connected with the fresh air main pipe through a first pipeline, an air outlet of the circulating unit is connected with an air outlet device of a corresponding operating room through a second pipeline, a second air inlet of the circulating unit is connected with an air return device of a corresponding operating room through a third pipeline, a second air quantity sensor and a fresh air control valve are sequentially arranged on the first pipeline in a direction extending outwards from the first air inlet, a return air control valve is arranged on the third pipeline, and a circulating unit driving motor is arranged in the circulating unit;
the intelligent control module is used for collecting total fresh air data through the first air volume sensor, collecting branch fresh air data through the second air volume sensor, collecting operating room air volume data through the third air volume sensor, collecting differential pressure data inside and outside the operating room through the differential pressure gauge, controlling the revolution of the fresh air unit driving motor according to total fresh air data, controlling the revolution of the circulating unit driving motor according to the branch fresh air data, the operating room air volume data and the differential pressure data, adjusting the rotating opening degree of the fresh air control valve and the return air control valve, and maintaining the air supply volume, the air exchange number, the air speed and the differential pressure of the operating room.
2. The intelligent air supply system for the operating room as recited in claim 1, wherein the intelligent control module comprises:
the fresh air unit total air volume control module is used for detecting the opening time of an operating room, calculating the total air volume, and adjusting the revolution of a driving motor of the fresh air unit according to the total fresh air data;
the operating room air quality control module is used for obtaining the air supply volume of an operating room, the air exchange number of the operating room and the air speed of the operating room according to the air quantity data of the operating room, controlling the rotating opening of the fresh air control valve according to the air supply volume of the operating room and the branch fresh air data, adjusting the rotating number of the EC motor of the circulating unit according to the air exchange number of the operating room and the air speed of the operating room, and controlling the opening of the return air control valve according to the pressure difference data.
3. The intelligent air supply system for the operating room as claimed in claim 2, wherein the intelligent control module controls the number of revolutions of the driving motors of the fresh air handling unit and the circulating unit through speed regulation current signals.
4. The intelligent air supply system for the operating room as recited in claim 2, wherein the operating room wind quality control module further comprises:
and the control data storage module is used for recording the adjusted revolution of the circulating unit driving motor, the opening of the fresh air control valve and the opening of the return air control valve.
5. The intelligent air supply system for the operating room as claimed in claim 1, wherein the fresh air handling unit comprises: the device comprises a main cold source device and an auxiliary cold source device, wherein the auxiliary cold source device is used for detecting the temperature of the main cold source and is put into use when the temperature of the main cold source is higher than the preset dehumidification temperature.
6. An intelligent control method for an air supply system of an operating room is characterized by comprising the following steps:
detecting the number of opening intervals of an operating room to obtain the total amount of required air supply, acquiring the total fresh air data of an air supply outlet of a fresh air unit through a first air quantity sensor, and adjusting the revolution of a driving motor of the fresh air unit according to the total fresh air data;
collecting branch fresh air data of a first air inlet of a circulating unit connected with the fresh air unit through a second air volume sensor, collecting air volume data of an operating room through a third air volume sensor, and collecting pressure difference data inside and outside the operating room through a pressure difference meter;
obtaining the air output of the operating room, the air exchange number of the operating room and the air speed of the operating room according to the air quantity data of the operating room;
controlling the opening of the fresh air control valve according to the air supply quantity of the operating room and the branch fresh air data, adjusting the revolution of a driving motor of a circulating unit according to the air exchange number of the operating room and the air speed of the operating room, and controlling the opening of the return air control valve according to the pressure difference data.
7. The intelligent control method for the air supply system of the operating room as claimed in claim 6, wherein the number of revolutions of the driving motor of the fresh air unit and the number of revolutions of the driving motor of the circulating unit are controlled by a speed-regulating current signal.
8. The intelligent control method of an operating room air supply system according to claim 6, wherein the method for controlling the rotation opening degree of the fresh air control valve according to the operating room air supply amount and the branch fresh air data comprises the following steps:
if the air supply volume of the operating room has deviation, judging whether the branch fresh air data is the preset branch air supply volume, and if not, adjusting the opening of the fresh air control valve until the branch fresh air data is equal to the preset branch air supply volume.
9. The intelligent control method of the air supply system of the operating room as claimed in claim 6, wherein the method for controlling the opening degree of the return air control valve according to the pressure difference data comprises the following steps:
if the differential pressure data is smaller than the preset differential pressure, closing the return air control valve;
and if the differential pressure data is greater than the preset differential pressure, opening the return air control valve greatly.
10. The intelligent control method for the air supply system of the operating room as recited in claim 6, further comprising:
recording the adjusted revolution of the driving motor of the circulating unit, the opening of the fresh air control valve and the opening of the return air control valve;
whether main cold source temperature in the detection fresh air handling unit is higher than preset dehumidification temperature, if detect and be higher than preset dehumidification temperature, put into use supplementary cold source.
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| CN202010303997.3A CN111578429A (en) | 2020-04-17 | 2020-04-17 | Intelligent air supply system for operating room and control method thereof |
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| CN202010303997.3A CN111578429A (en) | 2020-04-17 | 2020-04-17 | Intelligent air supply system for operating room and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513822A (en) * | 2021-04-20 | 2021-10-19 | 吴淑花 | Central air conditioning air-out state monitoring system in building |
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2020
- 2020-04-17 CN CN202010303997.3A patent/CN111578429A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513822A (en) * | 2021-04-20 | 2021-10-19 | 吴淑花 | Central air conditioning air-out state monitoring system in building |
| CN113513822B (en) * | 2021-04-20 | 2023-10-31 | 招商楼宇科技(深圳)有限公司 | Air-out state monitoring system of central air conditioner in building |
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