CN113485479A - High-temperature sterilization method based on condensation temperature PID control - Google Patents
High-temperature sterilization method based on condensation temperature PID control Download PDFInfo
- Publication number
- CN113485479A CN113485479A CN202110779722.1A CN202110779722A CN113485479A CN 113485479 A CN113485479 A CN 113485479A CN 202110779722 A CN202110779722 A CN 202110779722A CN 113485479 A CN113485479 A CN 113485479A
- Authority
- CN
- China
- Prior art keywords
- temperature
- air conditioner
- air
- frequency
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009833 condensation Methods 0.000 title claims abstract description 45
- 230000005494 condensation Effects 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 37
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007605 air drying Methods 0.000 claims description 3
- 230000004069 differentiation Effects 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 241000894006 Bacteria Species 0.000 abstract description 5
- 241000700605 Viruses Species 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 241000711573 Coronaviridae Species 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 6
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/24—Apparatus using programmed or automatic operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
- A61L2209/11—Apparatus for controlling air treatment
Abstract
The application belongs to the field of air conditioner methods, and particularly relates to a high-temperature sterilization method based on condensation temperature PID control. The method comprises the steps that a temperature sensor is arranged on an indoor unit of the air conditioner; comparing the target condensing temperature Tk with the actual condensing temperature Tsk to calculate a deviation value TΔThe target condensing temperature Tk-the actual condensing temperature Tsk, and according to the deviation value TΔDifferent control methods are implemented through the PID controller in size adoption, and the high-temperature sterilization method based on condensation temperature PID control can prevent or reduce the production of bacteria when the air conditioner is in operation, and improve or improve the high-temperature sterilization effect of the air conditioner, thereby improving the air quality of air blown out by the air conditioner and preventing human diseases. Based on the application on coldThe high-temperature sterilization method of the condensation temperature PID control controls the temperature of the indoor heat exchanger of the air conditioner to be 57 ℃ or above for continuous and stable operation, and can effectively inactivate various viruses such as coronavirus and the like.
Description
Field of the method
The application belongs to the field of air conditioner methods, and particularly relates to a high-temperature sterilization method based on condensation temperature PID control.
Background method
Along with the development of the domestic urbanization process, the average temperature of the urban environment is high, particularly after the summer comes, high-temperature early warning is frequently generated in each city, various air-conditioning equipment becomes necessary electrical equipment in the working life of people, and along with the promotion of the environment-friendly, healthy and comfortable requirements of people, the energy consumption of the air conditioner and the comfort level during use have further requirements. Present air conditioner in the market has inside foreign matter such as dust constantly to accumulate after a period of operation to produce bacterium mould thereupon and breed the scheduling problem, in the air conditioner use, these bacterium moulds can blow along with the wind of air conditioner and scatter to the room air, get into human respiratory, lead to the air conditioner to send the peculiar smell, and cause the disease easily, harm health. At present, a high-temperature sterilization method for improving an air conditioner is mainly characterized in that under a heating mode, control and regulation are carried out through the temperature difference between the actual condensation temperature and the target condensation temperature; in a sterilization operation mode of the conventional air conditioner, the temperature difference between the actual condensation temperature and the target condensation temperature is large due to control delay and lag in a certain time region, the sterilization temperature cannot be reached, and the sterilization effect is greatly influenced.
Disclosure of Invention
The application aims to provide a high-temperature sterilization method based on condensation temperature PID control, which has the advantages of rapid reaction, stable and efficient temperature control, capability of effectively improving effectiveness of the high-temperature sterilization method based on condensation temperature, improvement of sterilization effect and improvement of air conditioner use experience.
In order to achieve the above purpose, the following method scheme is adopted in the application.
The application discloses a high-temperature sterilization method based on condensation temperature PID control, which comprises the following structures and steps:
setting a temperature sensor on an air conditioner indoor unit, wherein the temperature sensor is used for detecting the fed back actual condensation temperature Tsk in real time in the heating mode of the air conditioner;
secondly, adjusting the air conditioner to a heating mode, comparing the target condensing temperature Tk with the actual condensing temperature Tsk to calculate a deviation value TΔThe target condensing temperature Tk-the actual condensing temperature Tsk, and according to the deviation value TΔThe size is controlled by a PID controller in different ways, specifically:
if TΔ> 0 and | TΔIf the absolute value is more than 1, quickly increasing the frequency F of the compressor to adjust the condensing temperature;
if TΔIf the | is less than or equal to 1, keeping the frequency F of the compressor unchanged, and adjusting the rotating speed of a fan of the indoor unit to finely adjust the condensation temperature;
if TΔ< 0 and | TΔIf the absolute value is more than 1, reducing the frequency F of the compressor to adjust the condensation temperature;
the PID controller adopts a step-by-step control scheme for controlling the frequency F of the compressor, specifically according to the deviation value TΔThe size is adjusted according to the corresponding frequency, specifically:
when T isΔWhen the time lasts for 3min in a certain gear zone, the frequency is changed according to the following rule:
when T is more than or equal to 0.5ΔAnd | TΔIncreasing the current compressor frequency F to one gear for running until F is more than or equal to 75 Hz; when-1 < TΔWhen the frequency is less than 0.5, the frequency F of the compressor is kept unchanged; when T isΔAt-1, from TΔStarting at-1, the compressor frequency F is run at 40Hz for 1 hour, or up to TΔStopping the compressor when the pressure is less than or equal to-3 ℃; wherein the deviation value TΔThe frequencies are ranked as follows:
75Hz：TΔ≥3；70Hz：3.0＞TΔ≥2.5；65Hz：2.5＞TΔ≥2；60Hz：2＞TΔ≥1.5；55Hz：1.5＞TΔ≥1；50Hz：1＞TΔ≥0.5；40Hz：0.5＞TΔ≥-1；30Hz：-1＞TΔ。
a further improvement or preferred embodiment of the foregoing high-temperature sterilization method based on PID control of condensing temperature further includes that when the PID controller is used for controlling the frequency of the compressor, the parameters are as follows:
deviation e (n) (target condensing temperature — actual coil temperature) × 10;
difference in this deviation: Δ e (n) ═ e (n) -e (n-1); difference in previous deviation: Δ e (n-1) ═ e (n-1) -e (n-2)
Proportional control quantity HzKp, integral control quantity HzKi and differential control quantity HzKd;
determining a coefficient according to an actual condition by the output coefficient Out _ gain;
outputting the corrected output Hzout; the output amount Hzout1 after the previous output correction; the filtered output Hzoutf; the previous control quantity F (n-1); this control quantity f (n); outputting the output increment DeltaF (n) without correction;
kp represents a proportionality constant, Ki represents an integration constant, and Kd represents a differentiation constant;
HzKp＝Kp*△e(n)；HzKi＝Ki*e(n)；HzKd＝Kd*[△e(n)-△e(n-1)]；
△F(n)＝HzKp+HzKi+HzKd＝Kp*△e(n)+Ki*e(n)+Kd*[△e(n)-△e(n-1)]
Hzout＝Out_gain*△F(n)
Hzoutf＝(Hzout+(Hzout1)*2)/3
F(n)＝F(n-1)+Hzoutf。
when the PID controller is used for controlling the rotating speed of the indoor unit fan, the parameters are as follows:
rad (n) represents the current indoor fan speed; rad (n-1) represents the previous indoor fan speed; delta rad (n) represents the indoor fan speed increment;
kp1 denotes a proportionality constant; ki1 denotes an integration constant; kd1 denotes the differential constant;
△rad(n)＝Kp1*△e(n)+Ki1*e(n)+Kd1*[△e(n)-△e(n-1)]
rad(n)＝rad(n-1)+△rad(n)
the PID controller algorithm is updated every 15 s.
The further improvement or the preferable scheme of the high-temperature sterilization method based on the PID control of the condensation temperature further comprises the step of constant temperature control based on feedforward compensation, which specifically means that:
for water-cooled air conditioner units, measuring outdoor temperature TSWWhen the outdoor temperature changes, the opening degree of the freezing/hot water valve is adjusted to the air supply temperature TSFFeed-forward compensation is carried out to make the temperature T of the air supplySFIn a set time period T1Internal slow change while measuring outdoor temperature TSWAnd indoor temperature TSNDeviation of (T)1And processed as follows when | T1When | < 3, close the return air loop, open the air inlet valve and the air outlet valve, when | T1When | > 3, open return air return circuit, open air intake valve and exhaust valve, adjust air conditioner humidity system simultaneously, carry out humidity control to the air inlet.
The further improvement or the preferable scheme of the high-temperature sterilization method based on the PID control of the condensation temperature further comprises the step of constant temperature control based on wind pressure regulation, specifically comprising the following steps of:
for an air conditioner unit adopting a tubular air inlet and outlet structure, when the indoor load is increased/decreased, the opening degree of an air valve at the tail end of an air drying pipeline is increased/decreased;
the further improvement or the preferable scheme of the high-temperature sterilization method based on the PID control of the condensation temperature further comprises that the actual condensation temperature refers to the temperature of a coil pipe of an air conditioner indoor unit.
The beneficial effects are that:
the high-temperature sterilization method based on the condensation temperature PID control can prevent or reduce the generation of bacteria when the air conditioner operates, and improve or improve the high-temperature sterilization effect of the air conditioner, so that the air quality of air blown out by the air conditioner is improved, and human diseases are prevented. This application passes through PID control condensation temperature, has realized more stable sterilization temperature, improves the validity and the stability of bactericidal effect, the use and the control of the air conditioner of being convenient for simultaneously. This application is under air conditioner heating mode, according to actual condensing temperature and target condensing temperature deviation size, the rotational speed through PID control regulation compressor frequency and indoor set fan comes more accurately, control condensing temperature steadily it can be in 0 ~ 5 minutes, realize the rapid heating up interval, at 5 ~ 30 minutes, make the temperature effective control that disinfects at stable state, in the small deviation of messenger's whole temperature control 58 ℃, play better bactericidal effect.
Tests show that the high-temperature sterilization method based on the condensation temperature PID control controls the temperature of the indoor heat exchanger of the air conditioner to be 57 ℃ or above for continuous and stable operation, and can effectively inactivate various viruses such as coronavirus and the like.
Drawings
FIG. 1 is a schematic diagram of a high temperature sterilization method based on PID control of condensing temperature;
FIG. 2 is a schematic view of a compressor frequency staging interval;
fig. 3 is a graph of condensing temperature effect based on the present application and conventional control.
Detailed Description
The present application will be described in detail with reference to specific examples.
The high-temperature sterilization method based on the condensation temperature PID control is mainly used for killing viruses of indoor refrigeration equipment such as various air conditioners and the like, eliminating peculiar smell of the air conditioners, reducing bacterial virus breeding and improving the use experience of the air conditioners, and the basic principle of the high-temperature sterilization method is shown in figure 1.
Specifically, the high-temperature sterilization method based on the condensation temperature PID control comprises the following structures and steps:
setting a temperature sensor on an air conditioner indoor unit, wherein the temperature sensor is used for detecting the fed back actual condensation temperature Tsk in real time in the heating mode of the air conditioner;
secondly, adjusting the air conditioner to a heating mode, comparing the target condensing temperature Tk with the actual condensing temperature Tsk to calculate a deviation value TΔThe target condensing temperature Tk-the actual condensing temperature Tsk, and according to the deviation value TΔDifferent control modes are implemented by a PID controller, and the actual condensation temperature refers to the temperature of a coil pipe of an air conditioner internal unit; specifically, the method comprises the following steps:
if TΔ> 0 and | TΔIf the absolute value is more than 1, quickly increasing the frequency F of the compressor to adjust the condensing temperature;
if TΔIf the | is less than or equal to 1, keeping the frequency F of the compressor unchanged, and adjusting the rotating speed of a fan of the indoor unit to finely adjust the condensation temperature;
if TΔ< 0 and | TΔIf the absolute value is more than 1, reducing the frequency F of the compressor to adjust the condensation temperature;
as shown in fig. 2, in the embodiment, the PID controller adopts a step-by-step control scheme for controlling the frequency F of the compressor, specifically according to the deviation value TΔThe magnitude is carried out according to corresponding frequencyAdjusting, specifically:
when T isΔWhen the time lasts for 3min in a certain gear zone, the frequency is changed according to the following rule:
when T is more than or equal to 0.5ΔAnd | TΔIncreasing the current compressor frequency F to one gear for running until F is more than or equal to 75 Hz; when-1 < TΔWhen the frequency is less than 0.5, the frequency F of the compressor is kept unchanged; when T isΔAt-1, from TΔStarting at-1, the compressor frequency F is run at 40Hz for 1 hour, or up to TΔStopping the compressor when the pressure is less than or equal to-3 ℃; wherein the deviation value TΔThe frequencies are ranked as follows:
75Hz：TΔ≥3；70Hz：3.0＞TΔ≥2.5；65Hz：2.5＞TΔ≥2；60Hz：2＞TΔ≥1.5；55Hz：1.5＞TΔ≥1；50Hz：1＞TΔ≥0.5；40Hz：0.5＞TΔ≥-1；30Hz：-1＞TΔ。
in a specific implementation, when the PID controller is used to control the compressor frequency, the parameters are as follows:
deviation e (n) (target condensing temperature — actual coil temperature) × 10;
difference in this deviation: Δ e (n) ═ e (n) -e (n-1); difference in previous deviation: Δ e (n-1) ═ e (n-1) -e (n-2)
Proportional control quantity HzKp, integral control quantity HzKi and differential control quantity HzKd;
determining a coefficient according to an actual condition by the output coefficient Out _ gain;
outputting the corrected output Hzout; the output amount Hzout1 after the previous output correction; the filtered output Hzoutf; the previous control quantity F (n-1); this control quantity f (n); outputting the output increment DeltaF (n) without correction;
kp represents a proportionality constant, Ki represents an integration constant, and Kd represents a differentiation constant;
HzKp＝Kp*△e(n)；HzKi＝Ki*e(n)；HzKd＝Kd*[△e(n)-△e(n-1)]；
△F(n)＝HzKp+HzKi+HzKd＝Kp*△e(n)+Ki*e(n)+Kd*[△e(n)-△e(n-1)]
Hzout＝Out_gain*△F(n)
Hzoutf＝(Hzout+(Hzout1)*2)/3
F(n)＝F(n-1)+Hzoutf。
when the PID controller is used for controlling the rotating speed of the indoor unit fan, the parameters are as follows:
rad (n) represents the current indoor fan speed; rad (n-1) represents the previous indoor fan speed; delta rad (n) represents the indoor fan speed increment;
kp1 denotes a proportionality constant; ki1 denotes an integration constant; kd1 denotes the differential constant;
△rad(n)＝Kp1*△e(n)+Ki1*e(n)+Kd1*[△e(n)-△e(n-1)]
rad(n)＝rad(n-1)+△rad(n)
the PID controller algorithm is updated every 15 s.
Particularly, for some industrial large-scale water cooling units and other equipment, because the air volume is large and the temperature change is slow, in order to realize better sterilization and disinfection effects, the constant temperature control steps based on feedforward compensation can be carried out, and the steps specifically refer to:
for water-cooled air conditioner units, measuring outdoor temperature TSWWhen the outdoor temperature changes, the opening degree of the freezing/hot water valve is adjusted to the air supply temperature TSFFeed-forward compensation is carried out to make the temperature T of the air supplySFIn a set time period T1Internal slow change while measuring outdoor temperature TSWAnd indoor temperature TSNDeviation of (T)1And processed as follows when | T1When | < 3, close the return air loop, open the air inlet valve and the air outlet valve, when | T1When | > 3, open return air return circuit, open air intake valve and exhaust valve, adjust air conditioner humidity system simultaneously, carry out humidity control to the air inlet.
Further, in order to ensure the thermostatic control effect, the method further includes a step of thermostatic control based on wind pressure adjustment, specifically: increasing/decreasing changes the opening of the blast gate at the end of the air drying pipe when the indoor load increases/decreases
The high-temperature sterilization method based on the condensation temperature PID control can improve the sterilization effect of the air conditioner and can better prevent or reduce bacteria brought by the air conditioner from harming human health. And the temperature mode is more accurate, the condensation temperature is prevented from being greatly fluctuated, the condensation temperature can be stably controlled at the target condensation temperature Tk (57 ℃), and the purpose of better sterilization effect can be achieved by stable sterilization temperature.
An improved experiment is carried out by using a certain type of air conditioner, when a self-contained traditional control scheme and the self-contained control method are adopted for testing respectively, the structure shown in figure 3 is obtained, a solid line is a condensation temperature curve of the air conditioner, a dotted line is a self-contained traditional control condensation temperature curve of a product, as can be seen from figure 3, the solid line and the dotted line are both in a rapid heating interval within 0-5 minutes; 5-30 minutes, the condensation temperature curve trend of the method is in a straight line and is in a stable state, and the temperature is controlled within a tiny deviation of 58 ℃; the conventional condensation temperature curve is controlled to trend on a wavy line and is in a stable state within a certain range, and the temperature is controlled within a larger deviation range of 53-60 ℃; in conclusion, compared with the control scheme of the application, the stability of the control scheme is superior to that of the conventional control of the condensation temperature, so that the high-temperature sterilization technology of PID control of the condensation temperature can achieve a better sterilization effect.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the protection scope of the present application, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.
Claims (5)
1. A high-temperature sterilization method based on condensation temperature PID control is characterized by comprising the following structures and steps:
setting a temperature sensor on an air conditioner indoor unit, wherein the temperature sensor is used for detecting the fed back actual condensation temperature Tsk in real time in the heating mode of the air conditioner;
secondly, adjusting the air conditioner to a heating mode, comparing the target condensing temperature Tk with the actual condensing temperature Tsk to calculate a deviation value TΔThe target condensing temperature Tk-the actual condensing temperature Tsk, and according to the deviation value TΔThe size is controlled by a PID controllerThe different control modes are specifically:
if TΔ> 0 and | TΔIf the absolute value is more than 1, quickly increasing the frequency F of the compressor to adjust the condensing temperature;
if TΔIf the | is less than or equal to 1, keeping the frequency F of the compressor unchanged, and adjusting the rotating speed of a fan of the indoor unit to finely adjust the condensation temperature;
if TΔ< 0 and | TΔIf the absolute value is more than 1, reducing the frequency F of the compressor to adjust the condensation temperature;
the PID controller adopts a step-by-step control scheme for controlling the frequency F of the compressor, specifically according to the deviation value TΔThe size is adjusted according to the corresponding frequency, specifically:
when T isΔWhen the time lasts for 3min in a certain gear zone, the frequency is changed according to the following rule:
when T is more than or equal to 0.5ΔAnd | TΔIncreasing the current compressor frequency F to one gear for running until F is more than or equal to 75 Hz; when-1 < TΔWhen the frequency is less than 0.5, the frequency F of the compressor is kept unchanged; when T isΔAt-1, from TΔStarting at-1, the compressor frequency F is run at 40Hz for 1 hour, or up to TΔStopping the compressor when the pressure is less than or equal to-3 ℃; wherein the deviation value TΔThe frequencies are ranked as follows:
75Hz：TΔ≥3；70Hz：3.0＞TΔ≥2.5；65Hz：2.5＞TΔ≥2；60Hz：2＞TΔ≥1.5；55Hz：1.5＞TΔ≥1；50Hz：1＞TΔ≥0.5；40Hz：0.5＞TΔ≥-1；30Hz：-1＞TΔ。
2. the method as claimed in claim 1, wherein the PID controller is used for controlling the compressor frequency according to the following parameters:
deviation e (n) (target condensing temperature — actual coil temperature) × 10;
difference in this deviation: Δ e (n) ═ e (n) -e (n-1); difference in previous deviation: Δ e (n-1) ═ e (n-1) -e (n-2)
Proportional control quantity HzKp, integral control quantity HzKi and differential control quantity HzKd;
determining a coefficient according to an actual condition by the output coefficient Out _ gain;
outputting the corrected output Hzout; the output amount Hzout1 after the previous output correction; the filtered output Hzoutf; the previous control quantity F (n-1); this control quantity f (n); outputting the output increment DeltaF (n) without correction;
kp represents a proportionality constant, Ki represents an integration constant, and Kd represents a differentiation constant;
HzKp＝Kp*△e(n)；HzKi＝Ki*e(n)；HzKd＝Kd*[△e(n)-△e(n-1)]；
△F(n)＝HzKp+HzKi+HzKd＝Kp*△e(n)+Ki*e(n)+Kd*[△e(n)-△e(n-1)]
Hzout＝Out_gain*△F(n)
Hzoutf＝(Hzout+(Hzout1)*2)/3
F(n)＝F(n-1)+Hzoutf；
when the PID controller is used for controlling the rotating speed of the indoor unit fan, the parameters are as follows:
rad (n) represents the current indoor fan speed; rad (n-1) represents the previous indoor fan speed; delta rad (n) represents the indoor fan speed increment;
kp1 denotes a proportionality constant; ki1 denotes an integration constant; kd1 denotes the differential constant;
△rad(n)＝Kp1*△e(n)+Ki1*e(n)+Kd1*[△e(n)-△e(n-1)]
rad(n)＝rad(n-1)+△rad(n)
the PID controller algorithm is updated every 15 s.
3. The high-temperature sterilization method based on the PID control of the condensation temperature according to claim 1, further comprising a constant temperature control step based on feedforward compensation, specifically comprising:
for water-cooled air conditioner units, measuring outdoor temperature TSWWhen the outdoor temperature changes, the opening degree of the freezing/hot water valve is adjusted to the air supply temperature TSFFeed-forward compensation is carried out to make the temperature T of the air supplySFIn a set time period T1Internal slow change while measuring outdoor temperature TSWAnd indoor temperature TSNDeviation of (T)1And processed as follows when | T1When | < 3, close the return air loop, open the air inlet valve and the air outlet valve, when | T1When | > 3, open return air return circuit, open air intake valve and exhaust valve, adjust air conditioner humidity system simultaneously, carry out humidity control to the air inlet.
4. The high-temperature sterilization method based on the PID control of the condensation temperature according to the claim 2, characterized by further comprising a constant temperature control step based on the wind pressure regulation, which specifically means that:
for the air conditioner unit adopting the tubular air inlet and outlet structure, when the indoor load is increased/decreased, the opening degree of an air valve at the tail end of the air drying pipeline is changed by increasing/decreasing.
5. The method as claimed in claim 1, wherein the actual condensing temperature is the temperature of the coil of the air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110779722.1A CN113485479A (en) | 2021-07-09 | 2021-07-09 | High-temperature sterilization method based on condensation temperature PID control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110779722.1A CN113485479A (en) | 2021-07-09 | 2021-07-09 | High-temperature sterilization method based on condensation temperature PID control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113485479A true CN113485479A (en) | 2021-10-08 |
Family
ID=77938325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110779722.1A Pending CN113485479A (en) | 2021-07-09 | 2021-07-09 | High-temperature sterilization method based on condensation temperature PID control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113485479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114815939A (en) * | 2022-06-28 | 2022-07-29 | 中成空间（深圳）智能技术有限公司 | Method and system for controllable and adjustable environmental quality in micro-negative pressure air film laboratory |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180021468A1 (en) * | 2016-07-22 | 2018-01-25 | Lg Electronics Inc. | Ultraviolet (uv) sterilization module and air conditioner including uv sterilization module |
| CN110094840A (en) * | 2018-01-31 | 2019-08-06 | 青岛海尔智能技术研发有限公司 | A kind of method for disinfection and disinfection air conditioner of air conditioner indoor unit |
| CN111578479A (en) * | 2020-04-27 | 2020-08-25 | 青岛海尔空调器有限总公司 | Method and device for cleaning control of air conditioner and air conditioner |
| CN111578478A (en) * | 2020-04-27 | 2020-08-25 | 青岛海尔空调器有限总公司 | Method and device for cleaning control of air conditioner and air conditioner |
| CN111692732A (en) * | 2020-03-13 | 2020-09-22 | 广东美的制冷设备有限公司 | Air conditioner and sterilization control method thereof |
-
2021
- 2021-07-09 CN CN202110779722.1A patent/CN113485479A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180021468A1 (en) * | 2016-07-22 | 2018-01-25 | Lg Electronics Inc. | Ultraviolet (uv) sterilization module and air conditioner including uv sterilization module |
| CN110094840A (en) * | 2018-01-31 | 2019-08-06 | 青岛海尔智能技术研发有限公司 | A kind of method for disinfection and disinfection air conditioner of air conditioner indoor unit |
| CN111692732A (en) * | 2020-03-13 | 2020-09-22 | 广东美的制冷设备有限公司 | Air conditioner and sterilization control method thereof |
| CN111578479A (en) * | 2020-04-27 | 2020-08-25 | 青岛海尔空调器有限总公司 | Method and device for cleaning control of air conditioner and air conditioner |
| CN111578478A (en) * | 2020-04-27 | 2020-08-25 | 青岛海尔空调器有限总公司 | Method and device for cleaning control of air conditioner and air conditioner |
Non-Patent Citations (1)
| Title |
|---|
| 龚威: "《楼宇自动控制技术》", 30 September 2008 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114815939A (en) * | 2022-06-28 | 2022-07-29 | 中成空间（深圳）智能技术有限公司 | Method and system for controllable and adjustable environmental quality in micro-negative pressure air film laboratory |
| CN114815939B (en) * | 2022-06-28 | 2022-09-02 | 中成空间（深圳）智能技术有限公司 | Method and system for controllable and adjustable environmental quality in micro-negative pressure air film laboratory |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11391475B2 (en) | Radiant air conditioning system for controlling comfortable and healthy indoor environment based on infrared sensing technology | |
| CN105352239B (en) | The control method of air conditioner electronic expansion valve | |
| US20190323717A1 (en) | Control method for heating operation of air-conditioner | |
| US9261288B2 (en) | Air conditioning system for adjusting temperature and humidity | |
| CN108361926A (en) | A kind of air-conditioner control method and air conditioner based on warm creeping chill | |
| CN106871351B (en) | A kind of frequency conversion air blowing control method of air-conditioning system | |
| CN108317692B (en) | Temperature-sensing air conditioner control method based on dressing compensation and air conditioner | |
| CN105157170A (en) | Method for controlling variable frequency air conditioner | |
| CN113485479A (en) | High-temperature sterilization method based on condensation temperature PID control | |
| CN105135612A (en) | Variable frequency air conditioner control method | |
| CN105066365A (en) | Air conditioner radio-frequency remote control method | |
| CN113970159A (en) | Control method of air conditioner and air conditioner | |
| CN105202693A (en) | RF (radio frequency) remote control method for air conditioner | |
| CN105526679A (en) | Energy-saving control method and device for air conditioner | |
| CN204943790U (en) | A kind of variable air rate energy-saving control system | |
| CN114659173B (en) | Air conditioner and control method of operation parameters of air conditioner | |
| CN103217993B (en) | Improve the method and apparatus of temperature control device users'comfort | |
| CN113503624B (en) | Multi-target linkage response control method for refrigerating system | |
| CN105605744A (en) | Fan coil temperature control device matched with pipe diameter of water pipe and used for controlling opening of water valve | |
| CN109197612A (en) | A kind of energy-saving environmental control system in pig farm and its control method | |
| CN107702284B (en) | Constant temperature and humidity system and control method thereof | |
| CN205425302U (en) | Fan coil temperature control device based on match control water valve aperture with water pipe pipe diameter | |
| CN205156456U (en) | Terminal energy -saving control device of data center air conditioner | |
| CN210018683U (en) | Constant temperature and humidity system | |
| CN108019880B (en) | Fresh air volume control method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211008 |
|
| RJ01 | Rejection of invention patent application after publication |