A kind of furred ceiling fresh air ventilator anti-freeze control system and its anti-freeze control method
Technical field
The present invention relates to a kind of furred ceiling fresh air ventilator anti-freeze control system and its anti-freeze control methods, belong to indoor
Filed of air conditioning.
Background technology
The one kind of furred ceiling fresh air ventilator as fresh air ventilator, it is ceiling mounted, it being capable of independent progress interior
Air displacement, purification, flowing, while excluding indoor pollution air, the natural fresh air outside input chamber is (referred to as new
Wind), and it is multinomial by effective filtering, sterilization, oxygenation, the poison that goes out, preheating (when outdoor air is colder) etc. to input indoor fresh air
Interior is re-fed into after processing.
It is controlled as shown in Figure 1, traditional furred ceiling fresh air ventilator includes ventilation host and the intelligence being electrically connected with ventilation host
Device processed, at the beginning of ventilation host includes new wind turbine, motor exhaust, heat exchanger, fresh air primary filter screen, fresh air efficient filter and air draft
Imitate strainer.Traditional furred ceiling fresh air ventilator is by outdoor circulating wind road and indoor circulation air duct by the air of outdoor introducing and interior
The air of discharge carries out heat exchange in a heat exchanger, and heat exchanger effectiveness makes the air of outdoor introducing 60%~70% or so
Temperature is sent into interior close to after indoor air themperature, at the beginning of arranging fresh air in indoor circulation air duct and outdoor circulating wind road
Strainer, fresh air efficient filter and air draft primary filter screen are imitated, high-performance and efficient ventilation can be continuously provided.
In northern cold winter, outdoor temperature often exists in minus 20 degrees or so, such as the regional lowest temperature in Harbin
Minus 20 degrees are to subzero 30 degree, under this atrocious weather, as indoor PM2.5Concentration, gas concentration lwevel, volatility are organic
When object content is high, furred ceiling fresh air ventilator begins to introduce outdoor fresh air, carries out air purification.
However, since outdoor temperature is low, if introducing outdoor fresh air for a long time, heat exchanger can be caused to generate frost phenomenon,
Make it that can not be normally carried out heat exchange, is reduced so as to cause indoor temperature, leverage indoor comfort degree.
Currently, most of tradition furred ceiling fresh air ventilator, when detecting that outdoor temperature is less than zero degree, complete machine can enter anti-
Freezing mode will reduce from the fresh air volume of outdoor introducing or stop introducing fresh air, and will be unable to realize room air in this way
Displacement, purification, flowing, cause indoor air quality to decline, with the decline of indoor air quality, dust in room air,
Fine particles pollutant, bacterium and virus etc. are also increasing, if long-time use, it will cause pole to people's physical and mental health
Big injury.
Invention content
In order to solve the above technical problem, the present invention provides a kind of furred ceiling fresh air ventilator anti-freeze control system and its
Anti-freeze control method.
According to an aspect of the invention, there is provided a kind of furred ceiling fresh air ventilator anti-freeze control system, including:
It takes a breath host, for outdoor air to be introduced into interior or by indoor air exhaust to outdoor;
Inner-outer circulation switch, for switching to interior cycle from outer circulation or by interior cyclic switching to outer circulation;
Intelligent control module, the work for controlling ventilation host and inner-outer circulation switch.
Further, the ventilation host includes:
New wind turbine, for outdoor air to be introduced into interior by outdoor circulating wind road;
Fresh air primary filter screen, for filtering out bulky grain dust in outdoor air;
Fresh air efficient filter, for filtering out outdoor air small particles dust;
Motor exhaust, for room air to be discharged into outdoor by indoor circulation air duct;
Air draft primary filter screen, for filtering out bulky grain dust in room air;
Heat exchanger, the air progress heat exchange for air and indoor discharge to outdoor introducing.
Further, the inner-outer circulation switch includes:
Switching valve, for switching to interior cycle from outer circulation or by interior cyclic switching to outer circulation;
Electric heater is heated for the outdoor air to introducing.
Further, the intelligent control module includes:
Air quality sensor module, for detecting indoor air quality, and the indoor air quality data that will be detected
Upload to microprocessor;
Air temperature sensor module, for detecting indoor air temperature and outside air temperature, and the room that will be detected
Interior air themperature and outside air temperature data upload to microprocessor;
Microprocessor, the indoor air quality data for will detect are compared with indoor air quality setting value,
Obtain indoor air quality comparison result, by the indoor air temperature data detected and outside air temperature data respectively with room
Interior air temperature set point and outside air temperature setting value are compared, and obtain indoor air temperature comparison result and outdoor is empty
Temperature degree comparison result, and by indoor air quality comparison result, indoor air temperature comparison result and outside air temperature ratio
Relatively result uploads to controller module;
Controller module, for empty according to indoor air quality comparison result, indoor air temperature comparison result and outdoor
Temperature degree comparison result, controls the work of new wind turbine, motor exhaust, switching valve and electric heater.
Further, the intelligent control module further includes liquid crystal display switch, and the liquid crystal display switch includes liquid crystal
Display screen and control switch, and the control switch is for receiving booting, shutdown, operational mode, new wind turbine/motor exhaust shelves
Position, indoor air quality setting value, indoor air temperature setting value and outside air temperature setting value input signal, Yi Jikong
The detection signal of makings quantity sensor module and air temperature sensor module, the liquid crystal display is for showing booting, closing
Machine, operational mode, new wind turbine/motor exhaust gear, indoor air quality setting value, indoor air temperature setting value and outdoor
The indoor air quality that air temperature set point and air quality sensor module and air temperature sensor module detect
Data, indoor air temperature and outside air temperature data.
Further, the air quality sensor module includes:
Indoor PM2.5Concentration sensor, for detecting indoor PM2.5Concentration, and the indoor PM that will be detected2.5Concentration data
Upload to microprocessor;
Indoor volatile organic compounds concentration sensor for detecting indoor volatile organic compounds concentration, and will detect
Indoor volatile organic compounds concentration data uploads to microprocessor;
Indoor carbon dioxide concentration sensor, for detecting indoor gas concentration lwevel, and the indoor dioxy that will be detected
Change concentration of carbon data and uploads to microprocessor.
Further, the air quality setting value includes interior PM2.5Concentration set point, indoor volatile organic compounds are dense
Spend setting value and indoor carbon dioxide concentration set point.
Further, the air temperature sensor module includes:
Room air temperature sensor, for detecting indoor air temperature, and the indoor air temperature data that will be detected
Upload to microprocessor;
Outside air temperature sensor, for detecting outside air temperature, and the outside air temperature data that will be detected
Upload to microprocessor.
Further, the controller module includes:
Fresh air electric machine controller, for according to indoor air quality comparison result, indoor air temperature comparison result and room
Outer air themperature comparison result, controls the work of new wind turbine;
Motor exhaust controller, for according to indoor air quality comparison result, indoor air temperature comparison result and room
Outer air themperature comparison result, controls the work of motor exhaust;
Switch valve control, for according to indoor air quality comparison result, indoor air temperature comparison result and outdoor
Air themperature comparison result controls the work of switching valve;
Electric heater controller, for according to indoor air quality comparison result, indoor air temperature comparison result and room
Outer air themperature comparison result, controls the work of electric heater.
According to another aspect of the present invention, provide it is a kind of using above-mentioned furred ceiling fresh air ventilator anti-freeze control system into
The method of row anti-freeze control, including:
The indoor air quality that indoor air quality is detected by air quality sensor module, and will be detected
Data upload to microprocessor;
Indoor air temperature and outside air temperature are detected by air temperature sensor module, and will be detected
Indoor air temperature and outside air temperature data upload to microprocessor;
The indoor air quality data detected are compared with indoor air quality setting value by microprocessor, are obtained
To indoor air quality comparison result, by the indoor air temperature data detected and outside air temperature data respectively with interior
Air temperature set point and outside air temperature setting value are compared, and obtain indoor air temperature comparison result and outdoor air
Temperature comparison result, and indoor air quality comparison result, indoor air temperature comparison result and outside air temperature are compared
As a result controller module is uploaded to;
Controller module is according to indoor air quality comparison result, indoor air temperature comparison result and outside air temperature
Comparison result controls the work of new wind turbine, motor exhaust, switching valve and electric heater.
Further, described that indoor air quality is detected by air quality sensor module, and will detect
Indoor air quality data upload to microprocessor and include:
Pass through indoor PM2.5Concentration sensor is to indoor PM2.5Concentration is detected, and the indoor PM that will be detected2.5Concentration
Data upload to microprocessor;
Indoor volatile organic compounds concentration is detected by indoor volatile organic compounds concentration sensor, and will detection
To indoor volatile organic compounds concentration data upload to microprocessor;
The interior that indoor carbon dioxide concentration is detected, and will detected by indoor carbon dioxide concentration sensor
Gas concentration lwevel data upload to microprocessor.
Further, described that indoor air temperature and outside air temperature are examined by air temperature sensor module
It surveys, and the indoor air temperature detected and outside air temperature data is uploaded into microprocessor and include:
The indoor air temperature that indoor air temperature is detected, and will be detected by room air temperature sensor
Data upload to microprocessor;
The outside air temperature that outside air temperature is detected by outside air temperature sensor, and will be detected
Data upload to microprocessor.
Further, the microprocessor by the indoor air quality data detected and indoor air quality setting value into
Row relatively includes:
The indoor PM that will be detected by the microprocessor2.5Concentration data, indoor volatile organic compounds concentration data and
Indoor carbon dioxide concentration data respectively with indoor PM2.5Concentration set point, indoor volatile organic compounds concentration set point and interior
Gas concentration lwevel setting value is compared.
Further, the controller module is according to indoor air quality comparison result, indoor air temperature comparison result
With outside air temperature comparison result, the work for controlling new wind turbine, motor exhaust, switching valve and electric heater includes:
Fresh air electric machine controller is according to indoor air quality comparison result, indoor air temperature comparison result and outdoor air
Temperature comparison result controls the work of new wind turbine;
Motor exhaust controller is according to indoor air quality comparison result, indoor air temperature comparison result and outdoor air
Temperature comparison result controls the work of motor exhaust;
Switch valve control according to indoor air quality comparison result, indoor air temperature comparison result and outdoor air temperature
Comparison result is spent, the work of switching valve is controlled;
Electric heater controller is according to indoor air quality comparison result, indoor air temperature comparison result and outdoor air
Temperature comparison result controls the work of electric heater.
Furred ceiling fresh air ventilator anti-freeze control system and its anti-freeze control method provided by the invention so that furred ceiling is new
Wind ventilator can also realize the displacement, purification, flowing of room air under extremely cold weather, so as to improve indoor air quality.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology and advantage, below will be to implementing
Example or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, the accompanying drawings in the following description is only
Only it is some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the schematic diagram of traditional furred ceiling fresh air ventilator;
Fig. 2 is the system block diagram of furred ceiling fresh air ventilator anti-freeze control system of the present invention;
Fig. 3 is the structure diagram of present invention ventilation host;
Fig. 4 is the structure diagram of inner-outer circulation switch of the present invention;
Fig. 5 is the outer circulation operation logic figure of furred ceiling fresh air ventilator of the present invention;
Fig. 6 is the interior circular flow schematic diagram of furred ceiling fresh air ventilator of the present invention;
Fig. 7 is the structure diagram of intelligent control module of the present invention;
Fig. 8 is the schematic diagram of intelligent control module of the present invention;
Fig. 9 is the main flow chart of intelligent control module intelligent mode of the present invention;
Figure 10 is the flow chart of " standby operation " subprogram in work flow diagram shown in Fig. 9;
Figure 11 is the flow chart of " interior circular flow " subprogram in work flow diagram shown in Fig. 9;
Figure 12 is the flow chart of " outer circulation operation " subprogram in work flow diagram shown in Fig. 9;
Figure 13 is the flow chart of " anti-freeze runs A " subprogram in work flow diagram shown in Figure 12;
Figure 14 is the flow chart of " anti-freeze runs B " subprogram in work flow diagram shown in Figure 12;
Figure 15 is the flow chart of " anti-freeze runs C " subprogram in work flow diagram shown in Figure 12;
Figure 16 is the flow chart of " anti-freeze runs D " subprogram in work flow diagram shown in Figure 12.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model that the present invention protects
It encloses.
Embodiment 1
In northern cold winter, outdoor temperature often exists in minus 20 degrees or so, such as the regional lowest temperature in Harbin
Minus 20 degrees are to subzero 30 degree, under this atrocious weather, as indoor PM2.5Concentration, gas concentration lwevel, volatility are organic
When object content is high, furred ceiling fresh air ventilator begins to introduce outdoor fresh air, carries out air purification.However, since outdoor temperature is low,
If introducing outdoor fresh air for a long time, heat exchanger can be caused to generate frost phenomenon, make it that can not be normally carried out heat exchange, to lead
It causes indoor temperature to reduce, leverages indoor comfort degree.
Currently, most of tradition furred ceiling fresh air ventilator, when detecting that outdoor temperature is less than zero degree, complete machine can enter anti-
Freezing mode will reduce from the fresh air volume of outdoor introducing or stop introducing fresh air, and will be unable to realize room air in this way
Displacement, purification, flowing, cause indoor air quality to decline, with the decline of indoor air quality, dust in room air,
Fine particles pollutant, bacterium and virus etc. are also increasing, if long-time use, it will cause pole to people's physical and mental health
Big injury.
To solve the above-mentioned problems, as shown in Fig. 2, present embodiments providing a kind of furred ceiling fresh air ventilator anti-freeze control
System, whole system is made of ventilation host 100, inner-outer circulation switch 200 and intelligent control module 300, in the present embodiment
Host 100 of taking a breath is identical as traditional ventilation host of furred ceiling fresh air ventilator.
As shown in figure 3, ventilation host 100 includes new wind turbine 110, motor exhaust 120, heat exchanger 130, fresh air just effect
Strainer 140, fresh air efficient filter 150 and air draft primary filter screen 160, new wind turbine 110, motor exhaust 120, heat exchanger 130,
Fresh air primary filter screen 140, fresh air efficient filter 150 and air draft primary filter screen 160 are respectively positioned in the cabinet of ventilation host 100.Tool
Body, new wind turbine 110 is used to outdoor air introducing interior by outdoor circulating wind road;Fresh air primary filter screen 140 is used for
Filter out bulky grain dust in outdoor air;Fresh air efficient filter 150 is for filtering out outdoor air small particles dust;Motor exhaust
120 by indoor circulation air duct by room air for being discharged into outdoor;Air draft primary filter screen 160 is for filtering out in room air
Bulky grain dust;Heat exchanger 130 is used to carry out heat exchange to the air and the air of indoor discharge of outdoor introducing.
As shown in figure 4, inner-outer circulation switch 200 includes switching valve 210, valve disc 220 and PTC electric heater 230, switching
Valve 210, valve disc 220 and PTC electric heater 230 are respectively positioned in the a-b box of inner-outer circulation switch 200200.Specifically, switching
Valve is used to switch to interior cycle from outer circulation or by interior cyclic switching to outer circulation, that is, realizes the switching work(of outer circulation and interior cycle
Energy.The purification scheme of outer circulation, that is, traditional furred ceiling fresh air ventilator, principle are by motor exhaust by indoor pollution air
It is discharged into outdoor after air draft primary filter screen, heat exchanger processing, outdoor air is then introduced by new wind turbine, makes introducing
Outdoor air be re-fed into interior after fresh air primary filter screen, fresh air efficient filter, heat exchanger processing, it is indoor dirty to exclude
Air is contaminated, as shown in Figure 5.Interior cycle is one of the important difference of the present embodiment and traditional furred ceiling fresh air ventilator, principle
Will to be cut off between indoor outer circulating air duct by inner-outer circulation switch, indoor pollution air is passed through in indoor circulation air duct
It is re-fed into interior after air draft primary filter screen, fresh air primary filter screen, fresh air efficient filter and heat exchanger processing, though as shown in fig. 6,
So cycle can solve the problems, such as room air pollution in operation, but can not solve indoor carbon dioxide and indoor volatility is organic
Object (VOC) highly concentrated problem only runs outer circulation and introduces outdoor fresh air, could dilute indoor carbon dioxide and indoor volatilization
Property organic matter (VOC) concentration.PTC electric heater is for heating the outdoor air of introducing, in the present embodiment, PTC electricity
Heater can utilize the positive temperature characterisitic of ptc material, i.e., when reaching certain temperature value (curie point), resistance value rises suddenly
Height makes electric current decline power and reduces, to achieve the purpose that automatic constant-temperature.Since PTC electric heater will not overheat, it is bright not generate
Fire is influenced by voltage fluctuation small, safe to use energy saving, is used on heating equipment more and more.
As shown in Figure 7 and Figure 8, intelligent control module 300 includes air quality sensor module 310, air themperature sensing
Device module 320, microprocessor 330 and controller module 340.Air quality sensor module 310 includes interior PM2.5Concentration passes
Sensor, indoor volatile organic compounds concentration sensor 312 and indoor carbon dioxide concentration sensor 313, indoor PM2.5Concentration passes
Sensor, indoor volatile organic compounds concentration sensor 312 and indoor carbon dioxide concentration sensor 313 are arranged at liquid crystal display
In switch 350, to detect indoor PM2.5Concentration, indoor volatile organic compounds concentration and indoor carbon dioxide concentration, and will detection
The indoor PM arrived2.5Concentration data, indoor volatile organic compounds concentration data and indoor carbon dioxide concentration data upload to Wei Chu
Manage device 330.Air temperature sensor module 320 includes room air temperature sensor 321 and outside air temperature sensor
322, room air temperature sensor 321 is arranged in liquid crystal display switch 350, to detect indoor air temperature, and will detection
To indoor air temperature data upload to microprocessor 330, outside air temperature sensor 322 is arranged in the outdoor of a-b box
In circulation air path, to detect outside air temperature, and the outside air temperature data detected are uploaded into microprocessor 330.
Microprocessor 330 obtains room for being compared the indoor air quality data detected with indoor air quality setting value
Interior air quality comparison result, and indoor air quality comparison result is uploaded into controller module 340, wherein air quality
Setting value includes interior PM2.5Concentration set point, indoor volatile organic compounds concentration set point and the setting of indoor carbon dioxide concentration
Value.In addition, microprocessor 330 be additionally operable to the indoor air temperature data and outside air temperature data that will be detected respectively with room
Interior air temperature set point and outside air temperature setting value are compared, and obtain indoor air temperature comparison result and outdoor is empty
Temperature degree comparison result, and indoor air temperature comparison result and outside air temperature comparison result are uploaded into controller module
340.Controller module 340 includes fresh air electric machine controller 341, motor exhaust controller 342, switching valve control 343 and PTC
Electric heater controller 344, specifically, fresh air electric machine controller 341 is used for according to indoor air quality comparison result, Interior Space
Temperature degree comparison result and outside air temperature comparison result, control the work of new wind turbine;Motor exhaust controller 342 is used
According to indoor air quality comparison result, indoor air temperature comparison result and outside air temperature comparison result, control row
The work of wind turbine;Switch valve control 343 to be used for according to indoor air quality comparison result, indoor air temperature comparison result
With outside air temperature comparison result, the work of switching valve is controlled;PTC electric heater controller 344 is used for according to room air
Quality comparison result, indoor air temperature comparison result and outside air temperature comparison result, control the work of PTC electric heater
Make.
As shown in fig. 7, intelligent control module 300 further includes liquid crystal display switch 350, the setting of liquid crystal display switch 350 exists
On indoor wall, including liquid crystal display and control switch.Specifically, control switch passes through key-press input for receiving user
Booting, shutdown, operational mode (intelligent mode, manual mode), new wind turbine/motor exhaust gear (high, medium and low), interior
Air temperature set point, outside air temperature setting value, interior PM2.5Concentration set point, the setting of indoor volatile organic compounds concentration
The signal of value and indoor carbon dioxide concentration set point, is additionally operable to PM in real-time reception room2.5Concentration sensor, indoor volatility
The indoor PM that organic concentration sensor 312 and indoor carbon dioxide concentration sensor 313 detect2.5Concentration, indoor volatility
The signal and room air temperature sensor 321 and outside air temperature of organic concentration and indoor carbon dioxide concentration sense
The signal of indoor air temperature and outside air temperature that device 322 detects;Liquid crystal display is for showing that user passes through button
The booting of input, shutdown, operational mode (intelligent mode, manual mode), new wind turbine/motor exhaust gear are (high, medium and low
Shelves), indoor air temperature setting value, outside air temperature setting value, interior PM2.5Concentration set point, indoor volatile organic compounds
Concentration set point and indoor carbon dioxide concentration set point, are additionally operable to PM in real-time display room2.5Concentration sensor, indoor volatilization
The indoor PM that property organic concentration sensor 312 and indoor carbon dioxide concentration sensor 313 detect2.5Concentration, indoor volatilization
Property organic concentration and indoor carbon dioxide concentration data and room air temperature sensor 321 and outside air temperature sensing
The indoor air temperature and outside air temperature data that device 322 detects.
Furred ceiling fresh air ventilator anti-freeze control system provided in this embodiment, mainly passes through intelligent control module 300
Intelligent mode realize.Under intelligent mode state, air quality sensor module 310 and air themperature module will detect
To air quality data and indoor and outdoor air temperature data be sent to microprocessor 330, microprocessor 330 is detected above-mentioned
Air quality data and indoor and outdoor air temperature data respectively with preset air quality setting value and indoor and outdoor air
Desired temperature is compared, to control new wind turbine, motor exhaust, switching valve and the work of PTC electric heater.
Embodiment 2
A kind of method carrying out anti-freeze control using anti-freeze control system in embodiment 1 is present embodiments provided, it should
What method was mainly realized by the intelligent mode of intelligent control module.Under intelligent mode state, air quality sensor mould
The air quality data detected and indoor and outdoor air temperature data are sent to microprocessor, micro- place by block and air themperature module
Reason device sets the above-mentioned air quality data detected and indoor and outdoor air temperature data with preset air quality respectively
Definite value and indoor and outdoor air desired temperature are compared, to control new wind turbine, motor exhaust, switching valve and PTC electrical heating
The work of device.
Specifically, indoor air temperature setting value, outside air temperature setting value, interior PM is arranged by button in user2.5
Concentration set point, indoor volatile organic compounds concentration set point and indoor carbon dioxide concentration set point.Wherein, outdoor air temperature
Degree setting value is Tm, it is preferred that outside air temperature setting value is ranging from -30 DEG C≤Tm≤0 DEG C Tm, and indoor air temperature is set
Definite value is Ts, it is preferred that ranging from 6 DEG C≤Ts≤12 DEG C indoor air temperature setting value Ts, certain user can also be according to need
It to be redefined by button.In addition, user can also select operational mode, such as intelligent mode or manual mould by button
Formula.
Conventional control methods under intelligent mode are as follows:
As indoor PM2.5Concentration PM2.5R is more than interior PM2.5Concentration set point, indoor volatile organic compounds concentration TVOCr is not
More than indoor volatile organic compounds concentration set point, indoor carbon dioxide concentration C O2R is less than the setting of indoor carbon dioxide concentration
When value, then switching valve is closed, that is, be switched to interior circular flow, indoor pollution air is taken out in new wind turbine, motor exhaust operation
Enter indoor circulation air path and outdoor circulating wind road, by fresh air primary filter screen, fresh air efficient filter and air draft primary filter screen, realizes
Indoor air purification;
When indoor volatile organic compounds concentration TVOCr is more than indoor volatile organic compounds concentration set point or indoor titanium dioxide
Concentration of carbon CO2When r is more than indoor carbon dioxide concentration set point, then switching valve is opened, that is, is switched to outer circulation operation, new wind-powered electricity generation
Machine, motor exhaust operation, by indoor circulation air duct and outdoor circulating wind road by the air of outdoor introducing and indoor discharge air
Heat exchange is carried out in a heat exchanger, and the air themperature of outdoor introducing is made to be sent into interior close to after indoor air themperature, due to
Fresh air primary filter screen, fresh air efficient filter and air draft primary filter screen are arranged in indoor circulation air duct and outdoor circulating wind road, when
Interior PM at this time2.5Concentration PM2.5R is more than interior PM2.5When concentration set point, indoor air purification can be also realized simultaneously.
As indoor PM2.5Concentration PM2.5R is less than indoor PM2.5Concentration set point, indoor volatile organic compounds concentration TVOCr
It is less than indoor volatile organic compounds concentration set point, indoor carbon dioxide concentration C O2R is less than indoor carbon dioxide concentration and sets
When definite value, then standby operation, i.e. PTC electric heater are closed, new wind turbine is closed, motor exhaust is closed, and switching valve keeps original state
State.
Above-mentioned PM2.5R concentration, TVOCr concentration, CO2R concentration carry out four grades division, less than above-mentioned limit value be it is excellent,
It has been more than that limit value is divided into three grades, i.e., good, slight pollution, serious pollution.Work as PM2.5R concentration, TVOCr concentration, CO2R concentration
When being in excellent, then new wind turbine, motor exhaust are out of service;Work as PM2.5R concentration, TVOCr concentration, CO2R concentration is in good
When, then new wind turbine, motor exhaust are with underdrive operating;Work as PM2.5R concentration, TVOCr concentration, CO2R concentration is in slight pollution
When, then new wind turbine, motor exhaust are run with middle-grade;Work as PM2.5R concentration, TVOCr concentration, CO2R concentration is in serious pollution
When, then new wind turbine, motor exhaust are run with top grade;Work as PM2.5R concentration, TVOCr concentration, CO2R concentration occurs two or more etc.
When grade, grade of being subject to is high, such as works as PM2.5A concentration of good, a concentration of slight pollutions of TVOCr of r, CO2A concentration of serious pollutions of r
When, then new wind turbine, motor exhaust are run with serious pollution grade, i.e., high-grade operation.
In the present embodiment, when the outdoor temperature sensor placed on inner-outer circulation switch detects that outdoor temperature Ta is low
When zero degree, and it is sent to microprocessor, to execute anti-freeze operation, this part is explained as the emphasis of the present embodiment
It states.
When outdoor temperature Ta is less than zero degree but is more than or equal to subzero 10 degree, A programs are run into anti-freeze;
When outdoor temperature Ta is less than subzero 10 degree but is more than or equal to minus 20 degrees, B programs are run into anti-freeze;
When outdoor temperature Ta is less than minus 20 degrees but is more than or equal to subzero 30 degree, c program is run into anti-freeze;
When outdoor temperature Ta is less than subzero 30 degree, D programs are run into anti-freeze.
Specifically, the control method of anti-freeze operation A programs is:
When the conventional operation under intelligent mode is interior cycle, then continue by interior circular flow, it is interior under interior circular flow
Outer circulation switch cuts off indoor and outdoor air circulation canal, then outdoor low temperature does not interfere with furred ceiling fresh air ventilator.
When the conventional operation under intelligent mode is outer circulation, then PTC electricity is opened on the basis of original conventional operation
The air for introducing outdoor is preheated, prevents heat exchanger frost by heater, and influences indoor comfort degree.
Specifically, the control method of anti-freeze operation B programs is:
When the conventional operation under intelligent mode is interior cycle, then continue by interior circular flow, it is interior under interior circular flow
Outer circulation switch cuts off indoor and outdoor air circulation canal, then outdoor low temperature does not interfere with furred ceiling fresh air ventilator.
When the conventional operation under intelligent mode is outer circulation, then PTC electricity is opened on the basis of original conventional operation
Heater preheats the air for introducing outdoor, and fresh air motor gear is not greater than low grade, and motor exhaust presses intelligent mode
Under conventional control operation, prevent heat exchanger frost, and influence indoor comfort degree.
Specifically, the control method of anti-freeze operation c program is:
When the conventional operation under intelligent mode is interior cycle, then continue by interior circular flow, it is interior under interior circular flow
Outer circulation switch cuts off indoor and outdoor air circulation canal, then outdoor low temperature does not interfere with furred ceiling fresh air ventilator.
When the conventional operation under intelligent mode is outer circulation, then need to be switched to interior cycle and outer circulation alternate run,
When i.e. outer circulation is run, PTC electric heater is opened, the air for introducing outdoor is preheated, and fresh air motor gear must not be big
In low grade, motor exhaust presses the conventional control operation under intelligent mode.It is more than 10 minutes between when running or in outer circular flow
Indoor temperature Tr declines 5 degree or more in the process, then switches to interior circular flow, because in outer loop process, heat exchanger may
There is frost, be further continued for outer circulation, caused heat exchanger that can not carry out heat exchange, has kept the indoor new air temperature of feeding close
Outdoor temperature, indoor temperature can reduce, and influence indoor comfort degree.In interior circular flow, due to extremely trembling with fear under winter environment,
Indoor temperature Tr is more high than outdoor temperature Ta, by indoor circulation air duct and outdoor circulating wind road that indoor pollution is empty
Gas will be through filtering treated air by fresh air primary filter screen, fresh air efficient filter, air draft primary filter screen and heat exchanger
It is re-fed into interior, temperature higher air (relative to outdoor air) indoor in this way solves the heat exchanger for frost occur
Freeze.When indoor temperature Tr is more than or equal to 12 degree, then PTC electric heater is closed, and new wind turbine is with motor exhaust gear with low
Shelves operation 1 minute;When indoor temperature Tr is more than 6 degree and is less than 12 degree, then PTC electric heater is opened, new wind turbine and air draft
Motor gear is with underdrive operating 1 minute;When indoor temperature Tr is less than or equal to 6 degree, then PTC electric heater is opened, new wind-powered electricity generation
Machine and motor exhaust gear are with underdrive operating 3 minutes;Then, then be switched to outer circulation operation, repeat so interior cycle with it is outer
The alternate run of cycle.
Specifically, the control method of anti-freeze operation D programs is:
When entering anti-freeze operation D, because outdoor temperature is too low, already below the minimum operating temperature of system, then at this time
Do not allow to carry out outer circulation operation, only allows interior circular flow, it is impaired to prevent locking system.
By using above-mentioned technical proposal, though in winter extremely cold weather if can be the case where not influencing indoor comfort degree
Under, realize the displacement, purification, flowing of room air.
In order to make the conventional control methods in the present embodiment under intelligent mode be easy to understand, with reference to specific figure
Show, explanation is expanded on further.
As shown in figure 9, the conventional control methods in the present embodiment under intelligent mode include:
Microprocessor in intelligent control module is initialized;
Judge TVOCr concentration or CO by microprocessor2Whether r concentration is exceeded, to judge to open interior circular flow still
Outer circulation is run;
If so, opening " outer circulation " runtime subroutine;
If it is not, then further judging PM by microprocessor2.5Whether r concentration is exceeded;
If so, opening " interior cycle " runtime subroutine;
If it is not, then opening " standby " runtime subroutine.
By selecting different operating statuses, it is not only able to realize the purification of indoor air quality, and more energy-saving ring
It protects, this is also the important difference of the present embodiment and traditional furred ceiling fresh air ventilator.
When indoor air quality is excellent, without starting the loads such as new wind turbine, motor exhaust, that is, enter standby mode, then
" standby " runtime subroutine is opened, as shown in Figure 10, " standby " runtime subroutine includes:
Microprocessor in intelligent control module is initialized;
Switching valve maintains the original state, since the state of switching valve at this time does not interfere with system, be turned on and off all be can be with
, so state remains unchanged;
PTC electric heater is closed, new wind turbine is closed, closes motor exhaust.
As TVOCr concentration and CO2R concentration is not exceeded, but PM2.5When r concentration over-standards, then it is not necessarily to because of outdoor fresh air, it only need to be into
Row indoor purifying opens " interior cycle " runtime subroutine, as shown in figure 11, " interior cycle " runtime subroutine includes:
Microprocessor in intelligent control module is initialized;
Switching valve is closed, into interior circular flow;
PTC electric heater is closed, new wind turbine is opened, opens motor exhaust, gear routinely controls operation.
As shown in figure 12, as TVOCr concentration and CO2R concentration over-standards need to draw outdoor fresh air and be purified, then open and " follow outside
Ring " runtime subroutine, " outer circulation " runtime subroutine include:
Microprocessor in intelligent control module is initialized;
Judge whether Tr is less than zero degree always by microprocessor;
If it is not, then opening switching valve, turn outer circulation operation, closes PTC electric heater, open new wind turbine, open air draft
Motor, gear routinely control operation;
If so, further judging whether Ta is more than or equal to subzero 10 degree and is less than 0 degree by microprocessor;
If so, executing anti-freeze runs A subprograms;
If it is not, then further judging whether Ta is more than or equal to minus 20 degrees and is less than subzero 10 degree by microprocessor;
If so, executing anti-freeze runs B subprograms;
If it is not, then further judging whether Ta is more than or equal to subzero 30 degree and is less than minus 20 degrees by microprocessor;
If so, executing anti-freeze runs C subprograms;
If it is not, then executing anti-freeze operation D subprograms.
A subprograms are run when entering anti-freeze, illustrate that Ta is more than or equal to subzero 10 degree and is less than 0 degree, opposite anti-freeze is run
B, anti-freeze operation C, anti-freeze run D, and outdoor temperature is not very severe, and as shown in figure 13, anti-freeze runs A subroutine packs
It includes:
Microprocessor in intelligent control module is initialized;
Switching valve is opened, is run into outer circulation;
PTC electric heater is opened, new wind turbine is opened, opens motor exhaust, gear routinely controls operation.
B subprograms are run when entering anti-freeze, illustrate that Ta is more than or equal to minus 20 degrees and is less than 10 degree, the ring than anti-freeze A
Border is severe, but runs D relative to anti-freeze operation C, anti-freeze, outdoor temperature be not also it is very severe, it is as shown in figure 14, antifreeze
Knot runs B subprograms:
Microprocessor in intelligent control module is initialized;
Switching valve is opened, is run into outer circulation;
It opens PTC electric heater, open new wind turbine, gear opens motor exhaust no more than low grade, and gear is routinely controlled
System operation.
C subprograms are run when entering anti-freeze, illustrate that Ta is more than or equal to subzero 30 degree less than 20 degree, outdoor temperature is very
It is low, the mode of inner-outer circulation alternate run can only be carried out to realize the purification of outdoor air, as shown in figure 15, anti-freeze runs C
Subprogram includes:
Microprocessor in intelligent control module is initialized;
Timer 1, which is opened, to reset, and the external circular flow time carries out timing;
Switching valve is opened, is run into outer circulation;
It opens PTC electric heater, open new wind turbine, gear opens motor exhaust no more than low grade, and gear is routinely controlled
System operation;
Judge whether timer 1 alreadys exceed 10 minutes;
If so, close switching valve, into interior circular flow, with the relatively high air of indoor temperature come to heat exchanger into
Row thaws;
If it is not, then judging in outer loop process, whether Tr declines 5 degree or more;
If so, illustrating heat exchanger in system frost, heat exchange is cannot achieve, then closes switching valve, into interior
Circular flow thaws to heat exchanger with the relatively high air of indoor temperature;
Judge whether Tr is more than or equal to 12 degree by microprocessor;
It is reset if so, timer 2 is opened, inner loop run time carries out timing, and Tr is more than or equal to subzero 12 degree, says
Bright indoor temperature is relatively high, then closes PTC electric heater, with the new wind turbine of underdrive operating, with underdrive operating motor exhaust;Sentence
Whether disconnected timer 2 alreadys exceed 1 minute;If it is not, then repeating the above steps, continue to turn interior circular flow;
If it is not, then judging whether Tr is more than 6 degree less than 12 degree equal;
If so, the unlatching of timer 2 is reset, inner loop run time carries out timing, and Tr is less than more than 6 degree waits 12 degree,
It is very high to illustrate indoor temperature not, then opens PTC electric heater, with the new wind turbine of underdrive operating, with underdrive operating motor exhaust;
Judge whether timer 2 alreadys exceed 1 minute;If it is not, then repeating the above steps, continue to turn interior circular flow;
If it is not, then timer 2 opens clearing, inner loop run time carries out timing, and Tr is less than or equal to 6 degree, illustrates room
Interior temperature is relatively low, and the required time of thawing is longer, then opens PTC electric heater, with the new wind turbine of underdrive operating, is transported with low grade
Row motor exhaust;Judge whether timer 2 alreadys exceed 3 minutes;If it is not, then repeating the above steps, continue to turn interior circular flow.
D subprograms are run when entering anti-freeze, illustrates that Ta is less than subzero 30 degree, alreadys exceed the temperature model of system operation
It encloses, such as continues outer circulation operation, then may cause expendable damage to system, then can only carry out interior cycle, such as Figure 16 institutes
Show, anti-freeze operation D subprograms include:
Microprocessor in intelligent control module is initialized;
Switching valve is closed, into interior circular flow;
PTC electric heater is closed, new wind turbine is opened, opens motor exhaust, gear routinely controls operation.
Furred ceiling fresh air ventilator anti-freeze control system and its anti-freeze control method provided by the invention, in extremely cold weather
In the case of, it can also realize room air displacement, purification, flowing, it is natural outside input chamber while excluding indoor pollution air
Fresh air, and indoor fresh air will be inputted and be re-fed into room after the processing such as effectively filtering, preheating (when outdoor air is colder)
It is interior, so as to improve indoor air quality.
In the above embodiment of the present invention, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.