CN112665157A - Air conditioner fresh air control method - Google Patents
Air conditioner fresh air control method Download PDFInfo
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- CN112665157A CN112665157A CN202011597971.0A CN202011597971A CN112665157A CN 112665157 A CN112665157 A CN 112665157A CN 202011597971 A CN202011597971 A CN 202011597971A CN 112665157 A CN112665157 A CN 112665157A
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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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Abstract
The invention discloses an air conditioner fresh air control method, which belongs to the technical field of central air conditioner fresh air control, and the control method comprises the steps of monitoring the state of a central air conditioner blower, monitoring central air conditioner parameters, monitoring operation control and monitoring fault alarm; the state monitoring of the central air-conditioning blower is used for automatically controlling the air supply temperature, the opening degree of a hot water valve can be automatically adjusted in winter to ensure that the air supply temperature is a set value, and the opening degree of a cold water valve can be automatically adjusted in summer to ensure that the air supply temperature is a set value. According to the air conditioner fresh air control method, the central air conditioning unit is reasonably controlled by fresh air, so that normal cooling and heating operation of the central air conditioning unit in summer and winter can be guaranteed, the central air conditioning unit can be reasonably controlled to start and stop based on the environment-friendly and energy-saving concept, and the air conditioner fresh air control method is guaranteed to be in line with the equipment operation concept of the current energy-saving society.
Description
Technical Field
The invention belongs to the technical field of fresh air control of central air conditioners, and particularly relates to a fresh air control method of an air conditioner.
Background
The air conditioner is an environmental engineering technology for keeping the temperature, humidity, cleanliness and airflow speed of indoor air within a certain range, and meets the requirements of comfortable life and production process. The central air conditioner is an air conditioner which controls different rooms by a host machine through air duct ventilation or a mode of connecting a cold water pipe with a hot water pipe at a plurality of tail ends so as to achieve the purpose of indoor air conditioning. By adopting an air pipe air supply mode, a plurality of different rooms can be controlled by one host, and fresh air can be introduced, so that the quality of indoor air is effectively improved, and air conditioner diseases are prevented.
In the prior art, a fresh air system of a central air conditioner comprises an outdoor unit, an indoor fresh air fan, an air supply pipeline, air openings and regulating valves of all rooms and the like, and a fresh air control system is used for controlling operation, but the existing fresh air control method is not perfect and cannot meet the environment-friendly and energy-saving performance advocated at present.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an air conditioner fresh air control method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a control method of fresh air of air conditioner, the inside of the control method includes monitoring the state of the central air conditioner blower, monitoring the central air conditioner parameter, monitoring the operation control and monitoring the fault alarm;
monitoring the state of a central air conditioner blower, automatically controlling the air supply temperature, automatically adjusting the opening of a hot water valve in winter to ensure that the air supply temperature is a set value, and automatically adjusting the opening of a cold water valve in summer to ensure that the air supply temperature is the set value;
monitoring central air-conditioning parameters, namely monitoring outdoor temperature and humidity of all fresh air fans, monitoring air supply temperature and humidity values of all air-conditioning units, and monitoring ambient environment parameters of the air-conditioning units;
the method comprises the following steps of monitoring the operation control of a central air conditioner, controlling the start and stop of a central air conditioner unit and interlocking protection, and adjusting the operation state of an air conditioning fresh air unit according to the real-time environment condition;
the central air conditioner fault alarm monitoring device is used for carrying out sound and light alarm on fan faults, filter screen pressure difference out-of-limit of a filter, fan wind pressure difference out-of-limit, low temperature alarm and temperature out-of-limit, and recording alarm equipment and time.
According to the technical scheme, when the ambient environment parameters of the air conditioning unit are monitored, the cold and hot water valves of the air conditioning unit are directly adjusted through the set temperature and humidity measuring points according to the monitored temperature and humidity, so that the temperature and humidity of the ambient environment are ensured to be set values, and the fresh air ratio of the air conditioning unit is adjusted according to the concentration of the carbon dioxide measuring points.
According to the technical scheme, the air conditioner fresh air control method is characterized in that the upper computer is used for carrying out centralized display on all detection and control parameters in the fresh air conditioning system through a computer and configuration software, the lower computer is used for collecting all parameters of the system through a PLC (programmable logic controller), and the DDC controller is used for carrying out corresponding simple control on the control parameters.
The technical scheme is further optimized, the start and stop control of the central air conditioning unit can automatically count the working time of the unit according to the programmed time and sequence or the timing start and stop unit managed by the central control room, the timing maintenance is prompted, and the programmed requirements can be a preset working and holiday work and rest schedule.
Further optimizing the technical scheme, the linkage protection control of the central air conditioning unit comprises the steps that after the fresh air fan stops, the fresh air door, the electric regulating valve and the electromagnetic valve are automatically closed; after the fresh air fan is started, when the pressure difference between the front and the rear of the fresh air fan is too low, a fault alarm is given out, and the fresh air fan is shut down in a linkage mode.
Further optimizing the technical scheme, the linkage protection control of the central air conditioning unit can automatically realize the conversion in winter and summer according to the supply water temperature of chilled water, and when the temperature of the fresh air fan is too low, the hot water valve is opened, the air door is closed, and the fresh air fan is stopped running.
Further optimizing the technical scheme, the air conditioner fresh air control method is operated based on a fresh air conditioning system, the fresh air conditioning system adopts a controller with the model number of S7-200 CPU224, the digital modules of the controller are EM221 and EM222, and the analog modules of the controller are EM231 and EM 232.
Further optimizing the technical scheme, the temperature sensor with the model number of 1762G01 is adopted for the temperature detection of the environment; a temperature and humidity sensor with the model of QFM2160 is adopted for temperature and humidity detection of indoor environment.
The technical scheme is further optimized, the state of the central air conditioner blower is monitored, the central air conditioner blower enters winter in autumn and enters transition seasons in summer in spring, the enthalpy value can be calculated according to the temperature and humidity of fresh air, and the air mixing ratio can be automatically adjusted.
Compared with the prior art, the invention provides an air conditioner fresh air control method, which has the following beneficial effects:
according to the air conditioner fresh air control method, the central air conditioning unit is reasonably controlled by fresh air, so that normal cooling and heating operation of the central air conditioning unit in summer and winter can be guaranteed, the central air conditioning unit can be reasonably controlled to start and stop based on the environment-friendly and energy-saving concept, and the air conditioner fresh air control method is guaranteed to be in line with the equipment operation concept of the current energy-saving society.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 first embodiment is as follows:
a control method of fresh air of air conditioner, the inside of the control method includes monitoring the state of the central air conditioner blower, monitoring the central air conditioner parameter, monitoring the operation control and monitoring the fault alarm;
monitoring the state of a central air conditioner blower, automatically controlling the air supply temperature, automatically adjusting the opening of a hot water valve in winter to ensure that the air supply temperature is a set value, and automatically adjusting the opening of a cold water valve in summer to ensure that the air supply temperature is the set value;
monitoring central air-conditioning parameters, namely monitoring outdoor temperature and humidity of all fresh air fans, monitoring air supply temperature and humidity values of all air-conditioning units, and monitoring ambient environment parameters of the air-conditioning units;
the method comprises the following steps of monitoring the operation control of a central air conditioner, controlling the start and stop of a central air conditioner unit and interlocking protection, and adjusting the operation state of an air conditioning fresh air unit according to the real-time environment condition;
the central air conditioner fault alarm monitoring device is used for carrying out sound and light alarm on fan faults, filter screen pressure difference out-of-limit of a filter, fan wind pressure difference out-of-limit, low temperature alarm and temperature out-of-limit, and recording alarm equipment and time.
Specifically, when the ambient environment parameters of the air conditioning unit are monitored, the cold and hot water valves of the air conditioning unit are directly adjusted according to the monitored temperature and humidity through the set temperature and humidity measuring points, so that the temperature and humidity of the ambient environment are ensured to be set values, and the fresh air ratio of the air conditioning unit is adjusted according to the concentration of the carbon dioxide measuring points.
Specifically, the air conditioner fresh air control method adopts a computer and configuration software to carry out centralized display on all detection and control parameters in the fresh air conditioning system through an upper computer, adopts a PLC to collect all parameters of the system through a lower computer, and utilizes a DDC controller to carry out corresponding simple control on the control parameters.
Specifically, the start-stop control of the central air conditioning unit can automatically count the working time of the unit according to the programmed time and sequence or the timed start-stop unit managed by the central control room, prompt the timed maintenance, and the programmed requirements can be a preset working and holiday work and rest schedule.
Specifically, the linkage protection control of the central air conditioning unit comprises that after the fresh air fan stops, the fresh air door, the electric regulating valve and the electromagnetic valve are automatically closed; after the fresh air fan is started, when the pressure difference between the front and the rear of the fresh air fan is too low, a fault alarm is given out, and the fresh air fan is shut down in a linkage mode.
Specifically, the linkage protection control of the central air conditioning unit can automatically realize the conversion in winter and summer according to the supply water temperature of chilled water, and when the temperature of the fresh air fan is too low, the hot water valve is opened, the air door is closed, and the fresh air fan is stopped.
Specifically, the air conditioner fresh air control method is operated based on a fresh air conditioning system, the fresh air conditioning system adopts a controller with the model number of S7-200 CPU224, the digital modules of the controller are EM221 and EM222, and the analog modules of the controller are EM231 and EM 232.
Specifically, a temperature sensor with the model number of 1762G01 is adopted for detecting the temperature of the environment; a temperature and humidity sensor with the model of QFM2160 is adopted for temperature and humidity detection of indoor environment.
Specifically, the state of the central air conditioner blower is monitored, the central air conditioner blower enters winter in autumn and enters transition season in summer in spring, the enthalpy value can be calculated according to the temperature and humidity of fresh air, and the air mixing ratio can be automatically adjusted.
Example two:
a control method of fresh air of air conditioner, the inside of the control method includes monitoring the state of the central air conditioner blower, monitoring the central air conditioner parameter, monitoring the operation control and monitoring the fault alarm;
monitoring the state of a central air conditioner blower, automatically controlling the air supply temperature, automatically adjusting the opening of a hot water valve in winter to ensure that the air supply temperature is a set value, and automatically adjusting the opening of a cold water valve in summer to ensure that the air supply temperature is the set value;
monitoring central air-conditioning parameters, namely monitoring outdoor temperature and humidity of all fresh air fans, monitoring air supply temperature and humidity values of all air-conditioning units, and monitoring ambient environment parameters of the air-conditioning units;
the method comprises the following steps of monitoring the operation control of a central air conditioner, controlling the start and stop of a central air conditioner unit and interlocking protection, and adjusting the operation state of an air conditioning fresh air unit according to the real-time environment condition;
the central air conditioner fault alarm monitoring device is used for carrying out sound and light alarm on fan faults, filter screen pressure difference out-of-limit of a filter, fan wind pressure difference out-of-limit, low temperature alarm and temperature out-of-limit, and recording alarm equipment and time.
Specifically, when the ambient environment parameters of the air conditioning unit are monitored, the cold and hot water valves of the air conditioning unit are directly adjusted according to the monitored temperature and humidity through the set temperature and humidity measuring points, so that the temperature and humidity of the ambient environment are ensured to be set values, and the fresh air ratio of the air conditioning unit is adjusted according to the concentration of the carbon dioxide measuring points.
Specifically, the air conditioner fresh air control method adopts a computer and configuration software to carry out centralized display on all detection and control parameters in the fresh air conditioning system through an upper computer, adopts a PLC to collect all parameters of the system through a lower computer, and utilizes a DDC controller to carry out corresponding simple control on the control parameters.
Specifically, the start-stop control of the central air conditioning unit can automatically count the working time of the unit according to the programmed time and sequence or the timed start-stop unit managed by the central control room, prompt the timed maintenance, and the programmed requirements can be a preset working and holiday work and rest schedule.
When the control of starting and stopping the central air conditioning unit is controlled, the air supply temperature can be set secondarily based on the change of the outdoor temperature, so that the difference between the indoor temperature and the outdoor temperature is reduced as much as possible, the energy consumption is reduced, the environment is protected, the energy is saved, and meanwhile, the comfort level of indoor personnel is improved.
Specifically, the linkage protection control of the central air conditioning unit comprises that after the fresh air fan stops, the fresh air door, the electric regulating valve and the electromagnetic valve are automatically closed; after the fresh air fan is started, when the pressure difference between the front and the rear of the fresh air fan is too low, a fault alarm is given out, and the fresh air fan is shut down in a linkage mode.
Specifically, the linkage protection control of the central air conditioning unit can automatically realize the conversion in winter and summer according to the supply water temperature of chilled water, and when the temperature of the fresh air fan is too low, the hot water valve is opened, the air door is closed, and the fresh air fan is stopped.
Specifically, the air conditioner fresh air control method is operated based on a fresh air conditioning system, the fresh air conditioning system adopts a controller with the model number of S7-200 CPU224, the digital modules of the controller are EM221 and EM222, and the analog modules of the controller are EM231 and EM 232.
Specifically, a temperature sensor with the model number of 1762G01 is adopted for detecting the temperature of the environment; a temperature and humidity sensor with the model of QFM2160 is adopted for temperature and humidity detection of indoor environment.
Specifically, the state of the central air conditioner blower is monitored, the central air conditioner blower enters winter in autumn and enters transition season in summer in spring, the enthalpy value can be calculated according to the temperature and humidity of fresh air, and the air mixing ratio can be automatically adjusted.
Example three:
a control method of fresh air of air conditioner, the inside of the control method includes monitoring the state of the central air conditioner blower, monitoring the central air conditioner parameter, monitoring the operation control and monitoring the fault alarm;
monitoring the state of a central air conditioner blower, automatically controlling the air supply temperature, automatically adjusting the opening of a hot water valve in winter to ensure that the air supply temperature is a set value, and automatically adjusting the opening of a cold water valve in summer to ensure that the air supply temperature is the set value;
monitoring central air-conditioning parameters, namely monitoring outdoor temperature and humidity of all fresh air fans, monitoring air supply temperature and humidity values of all air-conditioning units, and monitoring ambient environment parameters of the air-conditioning units;
the method comprises the following steps of monitoring the operation control of a central air conditioner, controlling the start and stop of a central air conditioner unit and interlocking protection, and adjusting the operation state of an air conditioning fresh air unit according to the real-time environment condition;
the central air conditioner fault alarm monitoring device is used for carrying out sound and light alarm on fan faults, filter screen pressure difference out-of-limit of a filter, fan wind pressure difference out-of-limit, low temperature alarm and temperature out-of-limit, and recording alarm equipment and time.
Specifically, when the ambient environment parameters of the air conditioning unit are monitored, the cold and hot water valves of the air conditioning unit are directly adjusted according to the monitored temperature and humidity through the set temperature and humidity measuring points, so that the temperature and humidity of the ambient environment are ensured to be set values, and the fresh air ratio of the air conditioning unit is adjusted according to the concentration of the carbon dioxide measuring points.
Specifically, the air conditioner fresh air control method adopts a computer and configuration software to carry out centralized display on all detection and control parameters in the fresh air conditioning system through an upper computer, adopts a PLC to collect all parameters of the system through a lower computer, and utilizes a DDC controller to carry out corresponding simple control on the control parameters.
Specifically, the start-stop control of the central air conditioning unit can automatically count the working time of the unit according to the programmed time and sequence or the timed start-stop unit managed by the central control room, prompt the timed maintenance, and the programmed requirements can be a preset working and holiday work and rest schedule.
When the start-stop control of the central air conditioning unit is controlled, an intermittent operation mode can be adopted, even if the unit is stopped for a period of time after running for a certain time, the unit is stopped to utilize residual temperature, and no obvious discomfort is caused to people, so that the energy consumption is saved.
Specifically, the linkage protection control of the central air conditioning unit comprises that after the fresh air fan stops, the fresh air door, the electric regulating valve and the electromagnetic valve are automatically closed; after the fresh air fan is started, when the pressure difference between the front and the rear of the fresh air fan is too low, a fault alarm is given out, and the fresh air fan is shut down in a linkage mode.
Specifically, the linkage protection control of the central air conditioning unit can automatically realize the conversion in winter and summer according to the supply water temperature of chilled water, and when the temperature of the fresh air fan is too low, the hot water valve is opened, the air door is closed, and the fresh air fan is stopped.
Specifically, the air conditioner fresh air control method is operated based on a fresh air conditioning system, the fresh air conditioning system adopts a controller with the model number of S7-200 CPU224, the digital modules of the controller are EM221 and EM222, and the analog modules of the controller are EM231 and EM 232.
Specifically, a temperature sensor with the model number of 1762G01 is adopted for detecting the temperature of the environment; a temperature and humidity sensor with the model of QFM2160 is adopted for temperature and humidity detection of indoor environment.
Specifically, the state of the central air conditioner blower is monitored, the central air conditioner blower enters winter in autumn and enters transition season in summer in spring, the enthalpy value can be calculated according to the temperature and humidity of fresh air, and the air mixing ratio can be automatically adjusted.
The invention has the beneficial effects that: according to the air conditioner fresh air control method, the central air conditioning unit is reasonably controlled by fresh air, so that normal cooling and heating operation of the central air conditioning unit in summer and winter can be guaranteed, the central air conditioning unit can be reasonably controlled to start and stop based on the environment-friendly and energy-saving concept, and the air conditioner fresh air control method is guaranteed to be in line with the equipment operation concept of the current energy-saving society.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A fresh air control method of an air conditioner is characterized in that the interior of the control method comprises the steps of monitoring the state of a central air conditioner blower, monitoring the parameters of the central air conditioner, monitoring operation control and monitoring fault alarm;
monitoring the state of a central air conditioner blower, automatically controlling the air supply temperature, automatically adjusting the opening of a hot water valve in winter to ensure that the air supply temperature is a set value, and automatically adjusting the opening of a cold water valve in summer to ensure that the air supply temperature is the set value;
monitoring central air-conditioning parameters, namely monitoring outdoor temperature and humidity of all fresh air fans, monitoring air supply temperature and humidity values of all air-conditioning units, and monitoring ambient environment parameters of the air-conditioning units;
the method comprises the following steps of monitoring the operation control of a central air conditioner, controlling the start and stop of a central air conditioner unit and interlocking protection, and adjusting the operation state of an air conditioning fresh air unit according to the real-time environment condition;
the central air conditioner fault alarm monitoring device is used for carrying out sound and light alarm on fan faults, filter screen pressure difference out-of-limit of a filter, fan wind pressure difference out-of-limit, low temperature alarm and temperature out-of-limit, and recording alarm equipment and time.
2. The method for controlling fresh air of an air conditioner according to claim 1, wherein when ambient environmental parameters of the air conditioning unit are monitored, the temperature and humidity of the ambient environment are ensured to be set values by directly adjusting cold and hot water valves of the air conditioning unit according to the monitored temperature and humidity through the set temperature and humidity measuring points, and the fresh air ratio of the air conditioning unit is adjusted according to the concentration through the set carbon dioxide measuring points.
3. An air conditioner fresh air control method according to claim 1, characterized in that the air conditioner fresh air control method uses computer and configuration software to centrally display each detection and control parameter in the fresh air conditioning system through an upper computer, uses PLC to collect each system parameter through a lower computer, and uses DDC controller to perform corresponding simple control on the control parameter.
4. An air conditioner fresh air control method as claimed in claim 1, wherein the start and stop control of the central air conditioning unit can be performed according to programmed time and sequence or by a central control room managing the timed start and stop unit to automatically count the unit working time and prompt the timed maintenance, and the programmed requirements can be a scheduled working and holiday work and rest schedule.
5. The method as claimed in claim 1, wherein the linkage protection control of the central air conditioning unit comprises automatically closing a fresh air damper, an electric control valve and an electromagnetic valve after the fresh air conditioner is stopped; after the fresh air fan is started, when the pressure difference between the front and the rear of the fresh air fan is too low, a fault alarm is given out, and the fresh air fan is shut down in a linkage mode.
6. The method as claimed in claim 5, wherein the linkage protection control of the central air conditioning unit can automatically realize the switching in winter and summer according to the supply water temperature of the chilled water, and when the temperature of the fresh air fan is too low, the hot water valve is opened, the air door is closed, and the fresh air fan is stopped.
7. An air conditioner fresh air control method according to claim 3, wherein the air conditioner fresh air control method is operated based on a fresh air conditioning system, the fresh air conditioning system is selected from a controller with a model number of S7-200 CPU224, the digital modules of the fresh air conditioning system are EM221 and EM222, and the analog modules of the fresh air conditioning system are EM231 and EM 232.
8. An air conditioner fresh air control method as claimed in claim 1, characterized in that for the temperature detection of the environment, a temperature sensor with model number 1762G01 is adopted; a temperature and humidity sensor with the model of QFM2160 is adopted for temperature and humidity detection of indoor environment.
9. The method of claim 1, wherein the state of the central air-conditioning blower is monitored, and the enthalpy value can be calculated according to the temperature and humidity of the fresh air in the transition seasons of entering winter in autumn and entering summer in spring, so as to automatically adjust the air mixing ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011597971.0A CN112665157A (en) | 2020-12-29 | 2020-12-29 | Air conditioner fresh air control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011597971.0A CN112665157A (en) | 2020-12-29 | 2020-12-29 | Air conditioner fresh air control method |
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| CN112665157A true CN112665157A (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011597971.0A Withdrawn CN112665157A (en) | 2020-12-29 | 2020-12-29 | Air conditioner fresh air control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110927A (en) * | 2021-11-24 | 2022-03-01 | 珠海格力电器股份有限公司 | Control method and device for fresh air set, fresh air set and storage medium |
| CN114440417A (en) * | 2021-12-17 | 2022-05-06 | 湖南东方红建设集团有限公司 | Fresh air fan control method and system and storage medium |
-
2020
- 2020-12-29 CN CN202011597971.0A patent/CN112665157A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110927A (en) * | 2021-11-24 | 2022-03-01 | 珠海格力电器股份有限公司 | Control method and device for fresh air set, fresh air set and storage medium |
| CN114440417A (en) * | 2021-12-17 | 2022-05-06 | 湖南东方红建设集团有限公司 | Fresh air fan control method and system and storage medium |
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Application publication date: 20210416 |