CN114209953A - Breathing humidifier, dry burning detection method thereof and computer readable storage medium - Google Patents
Breathing humidifier, dry burning detection method thereof and computer readable storage medium Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 152
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims description 13
- 230000000241 respiratory effect Effects 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000010411 cooking Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 15
- 239000007788 liquid Substances 0.000 description 5
- 238000009795 derivation Methods 0.000 description 3
- 210000002345 respiratory system Anatomy 0.000 description 3
- 230000028327 secretion Effects 0.000 description 2
- 206010062717 Increased upper airway secretion Diseases 0.000 description 1
- 208000032376 Lung infection Diseases 0.000 description 1
- 206010036790 Productive cough Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 206010057190 Respiratory tract infections Diseases 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000002612 cardiopulmonary effect Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000026435 phlegm Diseases 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 208000024794 sputum Diseases 0.000 description 1
- 210000003802 sputum Anatomy 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/16—Devices to humidify the respiration air
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
- A61M16/108—Preparation of respiratory gases or vapours by influencing the temperature before being humidified or mixed with a beneficial agent
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3368—Temperature
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
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Abstract
The invention relates to a breathing humidifier and a dry burning detection method thereof and a computer readable storage medium, wherein the breathing humidifier and the dry burning detection method thereof comprise the following steps: firstly, controlling the temperature of a heating plate to be maintained at a preset temperature; second, current input power P of heating plateGeneral assemblySubstituting a standard relation between power and temperature to obtain normal heating plate temperature TDish(ii) a Thirdly, according to the formula
=
Calculating to obtain a temperature difference delta T; if the delta T is less than or equal to the threshold D, returning to execute the second step, and if the delta T is greater than the threshold D, judging the step is dry burning; the threshold value D is 4-5 ℃. Because the invention is used for dry burning detectionThe standard relation of power and temperature is adopted in the measurement, and the standard relation of power and temperature comprises the factors of the power loss condition of the heating plate, the quality of water in the humidification tank and the initial temperature, so that the judgment is high in accuracy.
Description
Technical Field
The invention relates to a medical instrument, in particular to a humidifier of a breathing machine, a dry burning detection method thereof and a computer readable storage medium.
Background
A breathing humidifier, namely a humidifier for a breathing machine, is an important component of the breathing machine and has the function of heating and humidifying inhaled gas. The good heating and humidification can prevent and reduce the secondary respiratory tract infection of the patient with mechanical ventilation, stimulate the cardiopulmonary system and keep the alveoli moist. Meanwhile, the consumption of heat and respiratory tract water can be reduced, so that the air passage is not easy to generate phlegm scab, the viscosity of secretion can be reduced, and the sputum excretion is promoted.
Breathe humidifier and include humidifying jar and heating plate usually, the heating plate is used for heating the humidifying jar to make the liquid vaporization in the humidifying jar, and, be equipped with the temperature controller, utilize temperature sensor, through control heating temperature, the heating plate just stops the heating after reaching corresponding temperature, the heating plate then begins the heating when not enough preset temperature.
Traditional breathing humidifier does not design the dry combustion method state and detects, and a plurality of fever are not in time discovered, can lead to the bronchial secretion sticky, aggravate the respiratory tract jam, cause lung infection, perhaps humidity not enough also will cause upper respiratory disease easily.
Therefore, the breathing humidifier has the function of dry burning detection, for example, a floating ball type liquid level switch is directly arranged in the humidification tank, and when the water level is low and touches the liquid level switch, the heater is in a dry burning state. However, the humidification tank of the respiratory humidifier is usually disposable, and the cost is high because the water level sensor is arranged in the disposable humidification tank. Then, a dry combustion detection method without a floating ball type liquid level switch appears in the market, and the representative method can be seen in a Chinese patent CN 112807540A, which discloses a breathing humidifier and a dry combustion detection method thereof, wherein the dry combustion detection method comprises the following steps: controlling the temperature of the heater to be maintained to a preset temperature; acquiring output power when the temperature of the heater is maintained at a preset temperature; and comparing the output power with the preset power, and if the output power is less than the preset power and the duration time of the output power less than the preset power is longer than or equal to the preset time length, judging that the heater is in a dry-burning state. The dry combustion detection method directly compares the output power of the heater with the preset power to judge whether dry combustion occurs, but in practice, the output power of the heater has a plurality of influence factors, such as the ambient temperature, the contact condition of the heating plate and the humidification tank, the water level in the humidification tank and the like, and after the factors are superposed, the accuracy of a dry combustion judgment conclusion is directly influenced, and misjudgment is easy to occur.
Disclosure of Invention
The invention aims to provide a breathing humidifier, a dry combustion detection method thereof and a computer readable storage medium, so as to improve the accuracy of dry combustion judgment.
In order to achieve the purpose, the invention adopts the technical scheme that the dry combustion detection method of the breathing humidifier comprises the following steps: a dry burning detection method of a breathing humidifier comprises a humidification tank and a heating plate for heating the humidification tank; the dry burning detection method of the breathing humidifier comprises the following steps:
firstly, controlling a heating plate to work, and maintaining the temperature of the heating plate at a preset temperature;
the second step, the current input power P of the heating plate when the temperature of the heating plate reaches the preset temperature is obtainedGeneral assemblyThe current input power P of the heating plateGeneral assemblySubstituting a standard relation between power and temperature to obtain a normal heating plate temperature T plate; the standard relation between the power and the temperature refers to the corresponding relation between the input power of the heating plate and the temperature of the heating plate under the normal working condition of the breathing humidifier;
thirdly, obtaining the current actual temperature of the heating plate as the temperature TnowThe preset temperature can be used as the temperature TnowAccording to the formula
=
Calculating to obtain a temperature difference delta T; and if the delta T is less than or equal to the threshold D, returning to execute the second step, and if the delta T is greater than the threshold D, judging that the cooking is dry.
In the scheme, the threshold value D is 4-5 ℃.
In the above scheme, a secondary judgment can be added after the third step to further improve the accuracy of the dry-fire judgment, and specifically, the secondary judgment has two preferable schemes:
A. and a fourth step is added after the third step, wherein the specific fourth step is as follows: changing the input power of the heating plate to a fixed power value PFixing deviceSampling and storing the temperature of the heating plate at regular time, and calculating the rising slope a of the temperature of the heating plate when the number of stored samples reaches M; if the slope a is less than or equal to the threshold value E, returning to execute the second step; if it isIf the slope a is larger than the threshold value E, the dry burning state is further confirmed. Further, in the fourth step, a slope a of the rise of the temperature of the heating plate is calculated by specifically adopting a least square method; the fixed power PFixing deviceThe value range of (A) is the maximum power of the heating plate
25% -45% of the threshold value E, and the value of the threshold value E is 0.73-0.96. Still further, when the output flow of the breathing humidifier is less than 40 liters per minute, the fixed power PFixing deviceIs taken as the maximum power of the heating plate
30% of (a), said threshold E being 0.95; and when the flow rate is more than or equal to 40 liters per minute, the fixed power PFixing deviceIs taken as the maximum power
40% of the above, the threshold value E is 0.73.
B. And adding a fourth step after the third step, wherein the fourth step is as follows: collecting the current temperature T of the air outlet of the humidification tankAir outletThe current temperature T of the air outletAir outletComparing with the threshold value F, if the threshold value F is larger than or equal to the threshold value F, returning to execute the second step; if the current temperature T of the air outletAir outletAnd if the temperature is less than the threshold value F, further confirming the dry burning state.
In the above scheme, the normal working conditions of the breathing humidifier in the definition of the standard relationship between power and temperature include power loss condition of the heating plate, quality of water in the humidification tank, initial temperature and other factors. Specifically, the standard relationship between power and temperature has the following two preferable ways:
A. the standard relation between the power and the temperature is derived by a formula as follows:
in the formula, PGeneral assemblyFor heating platesCurrent input power, PDecrease in the thickness of the steelIs the power lost during the operation of the humidifier, tnTo start the operation of the hotplate to the present time, CWater (W)Is the specific heat of water, CDishIs a hot melting method of the heating plate,
dishIn order to improve the quality of the heating plate,
water (W)Quality of water at standard level in the humidification tank, TStarting pointTo start the run the starting temperature of the heating plate.
B. The standard relation between the power and the temperature can also be one-to-one corresponding data of the input power of the heating plate and the temperature of the heating plate, which is obtained by carrying out a plurality of tests according to the normal working condition of the breathing humidifier before delivery.
In order to achieve the purpose, the invention adopts the technical scheme that: a respiratory humidifier, comprising:
a humidifying tank;
the heating disc is used for heating the humidification tank; and
and the control device is used for controlling and executing each step of the dry combustion detection method in the technical scheme of the dry combustion detection method of the breathing humidifier.
In order to achieve the above purpose, the technical solution of the computer-readable storage medium adopted by the present invention is: a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the dry-fire detection method according to the above-mentioned dry-fire detection method for a respiratory humidifier.
Based on the technical scheme, the invention has the following advantages and effects:
1. the invention does not need to additionally increase a floating ball type liquid level switch, thereby reducing the cost;
2. the invention can detect whether the heating plate of the breathing humidifier is in a dry-burning state in time, so as to avoid respiratory tract discomfort caused by dry burning and avoid safety accidents;
3. the dry burning detection of the invention is to detect the current input power P of the heating plateGeneral assemblySubstituting the standard relation of power and temperature to obtain a corresponding heating plate temperature value, then judging whether the heating plate temperature value is too low, and judging the heating plate to be dry-burning if the heating plate temperature value is too low, wherein the standard relation of power and temperature comprises the factors of the power loss condition of the heating plate, the quality of water in the humidification tank and the initial temperature, so that the judgment is very high in accuracy and cannot be misjudged.
Drawings
FIG. 1 is a flow chart of the method of example 1 of the present invention;
FIG. 2 is a flow chart of the method of example 2 of the present invention;
FIG. 3 is a flow chart of the method of embodiment 3 of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples:
example 1: referring to fig. 1, a respiratory humidifier, a dry combustion detection method thereof and a computer readable storage medium are disclosed:
the breathing humidifier comprises a humidification tank and a heating plate for heating the humidification tank.
A dry burning detection method of the breathing humidifier comprises the following steps:
firstly, controlling the heating plate to work to maintain the temperature of the heating plate at a preset temperature.
The second step, the current input power P of the heating plate when the temperature of the heating plate reaches the preset temperature is obtainedGeneral assemblyThe current input power P of the heating plateGeneral assemblySubstituting a standard relation between power and temperature to obtain normal heating plate temperature TDish。
The standard relation between the power and the temperature refers to the corresponding relation between the input power of the heating plate and the temperature of the heating plate under the normal working condition of the breathing humidifier.
The normal working conditions comprise power loss conditions of the heating plate, quality of water in the humidification tank, initial temperature and other factors.
Specifically, the standard relationship between power and temperature may be derived by a formula, specifically:
in the above formula, PGeneral assemblyFor heating the disc at the present input power, PDecrease in the thickness of the steelThe power consumed during the operation of the humidifier (the value is a fixed value obtained by detecting a certain type of humidifier), tnTo start the operation of the hotplate to the present time, CWater (W)Is the specific heat of water, CDishIs a hot melting method of the heating plate,
dishIn order to improve the quality of the heating plate,
water (W)Quality of water at standard level in the humidification tank, TStarting pointTo start the run the starting temperature of the heating plate.
The concrete derivation process of the formula of the standard relation between power and temperature is as follows:
[1] 
[2] 
[3] 
[4] 
[5] 
from the aboveThe formula of the standard relation between power and temperature adopts the hypothesis that there is water condition, so
Is approximately a fixed value, and is in a dry-burning state without water because
0g, in this case the same heating plate at the same temperature, PGeneral assemblyWill decrease so that the current input power P of the heating plate will be reducedGeneral assemblySubstituting the formula of the standard relation between the power and the temperature to calculate the normal temperature T of the heating plateDishWill necessarily be lower.
In a third step, the current actual temperature of the heating plate (the average value of the current actual temperatures of the heating plate obtained within 5s may be adopted) is obtained as the temperature TnowOr directly using the preset temperature as the temperature TnowAccording to the formula
=
Calculating to obtain a temperature difference delta T; if the delta T is less than or equal to the threshold D, returning to execute the second step, and if the delta T is greater than the threshold D, judging the heating is dry and giving an alarm.
As the error of a common temperature sensor is +/-2 ℃, the threshold value D is set to be 4-6 ℃, the optimal value is 5 ℃, and the error meets the precision error through big data test.
In practice, the standard relationship between power and temperature may also be obtained by multiple tests, that is, corresponding data of one-to-one correspondence between input power of the heating plate and temperature of the heating plate, which is obtained by performing multiple tests according to normal working conditions of the breathing humidifier before delivery. In a second step, the normal heating-disc temperature T is obtained in a look-up tableDish。
A breathing humidifier comprises a humidifying tank, a heating plate and a controller. The heating plate is used for heating the humidification tank. The control device is used for controlling the steps of the dry burning detection method.
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the dry fire detection method described above.
Example 2: referring to fig. 2, a respiratory humidifier, a dry combustion detection method thereof and a computer readable storage medium are disclosed:
the breathing humidifier comprises a humidification tank and a heating plate for heating the humidification tank.
A dry burning detection method of the breathing humidifier comprises the following steps:
firstly, controlling the heating plate to work to maintain the temperature of the heating plate at a preset temperature.
The second step, the current input power P of the heating plate when the temperature of the heating plate reaches the preset temperature is obtainedGeneral assemblyThe current input power P of the heating plateGeneral assemblySubstituting a standard relation between power and temperature to obtain normal heating plate temperature TDish。
The standard relation between the power and the temperature refers to the corresponding relation between the input power of the heating plate and the temperature of the heating plate under the normal working condition of the breathing humidifier.
The normal working conditions comprise power loss conditions of the heating plate, quality of water in the humidification tank, initial temperature and other factors.
Specifically, the standard relationship between power and temperature may be derived by a formula, specifically:
in the above formula, PGeneral assemblyFor heating the disc at the present input power, PDecrease in the thickness of the steelThe power consumed during the operation of the humidifier (the value is a fixed value obtained by detecting a certain type of humidifier), tnTo start the operation of the hotplate to the present time, CWater (W)Is the specific heat of water, CDishIs a hot melting method of the heating plate,
dishIn order to improve the quality of the heating plate,
water (W)Quality of water at standard level in the humidification tank, TStarting pointTo start the run the starting temperature of the heating plate.
The derivation of the standard formula for the relationship between power and temperature is described in example 1 and will not be repeated here.
In a third step, the current actual temperature of the heating plate (the average value of the current actual temperatures of the heating plate obtained within 5s may be adopted) is obtained as the temperature TnowOr directly using the preset temperature as the temperature TnowAccording to the formula
=
Calculating to obtain a temperature difference delta T; if the delta T is less than or equal to the threshold D, returning to execute the second step, and if the delta T is greater than the threshold D, judging the heating is dry and giving an alarm.
As the error of a common temperature sensor is +/-2 ℃, the threshold value D is set to be 4-6 ℃, the optimal value is 5 ℃, and the error meets the precision error through big data test.
Fourthly, judging for the second time, changing the input power of the heating plate into a fixed power value PFixing deviceSampling and storing the temperature of the heating plate at regular time (preferably every 1 s), and calculating the rising slope a of the temperature of the heating plate when the number of stored samples reaches M (particularly M is 60-90 is preferable); if the slope a is less than or equal to the threshold value E, returning to execute the second step; if the slope a is larger than the threshold value E, the dry-burning state is judged, and an alarm is given.
Specifically, in the fourth step, a least square formula is adopted:
b = 
;
a = 
；
b is an intercept, and a is a slope, and the slope a of the rise of the temperature of the heating plate is obtained through analysis and calculation.
Specifically, the fixed power PFixing deviceThe value range of the threshold value E is 25% -45% of the maximum power of the heating plate, and the value of the threshold value E is 0.73-0.96.
Since the power of the heater plate is related to the output flow of the humidifier, it is more preferable to use 40 liters per minute as the dividing line, assuming maximum power
When the output flow of the breathing humidifier is less than 40 liters per minute, the fixed power PFixing deviceIs taken as the maximum power of the heating plate
30% of (a), said threshold E being 0.95; and when the flow rate is more than or equal to 40 liters per minute, the fixed power PFixing deviceIs taken as the maximum power
40% of (c), said threshold E being 0.73, as shown in the following table:
the second judgment of the fourth step is based on the first initial judgment, and a step is added, specifically, the step is judged by adopting the slope of the temperature rise of the heating plate under the fixed power, the judgment accuracy is extremely high, and the detection reaction speed is high, so to speak, the method is fast and accurate.
The above embodiments are examples, and in practice, the standard relationship between the power and the temperature may also be obtained by multiple tests, that is, the input power of the heating plate obtained by multiple tests according to the normal working condition of the breathing humidifier before leaving factoryAnd corresponding data corresponding to the temperature of the heating plate in a one-to-one mode. In a second step, the normal heating-disc temperature T is obtained in a look-up tableDish。
A breathing humidifier comprises a humidifying tank, a heating plate and a controller. The heating plate is used for heating the humidification tank. The control device is used for controlling the steps of the dry burning detection method.
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the dry fire detection method described above.
Example 3: referring to fig. 3, a respiratory humidifier, a dry combustion detection method thereof and a computer readable storage medium are disclosed:
the breathing humidifier comprises a humidification tank and a heating plate for heating the humidification tank.
A dry burning detection method of the breathing humidifier comprises the following steps:
firstly, controlling the heating plate to work to maintain the temperature of the heating plate at a preset temperature.
The second step, the current input power P of the heating plate when the temperature of the heating plate reaches the preset temperature is obtainedGeneral assemblyThe current input power P of the heating plateGeneral assemblySubstituting a standard relation between power and temperature to obtain normal heating plate temperature TDish。
The standard relation between the power and the temperature refers to the corresponding relation between the input power of the heating plate and the temperature of the heating plate under the normal working condition of the breathing humidifier.
The normal working conditions comprise power loss conditions of the heating plate, quality of water in the humidification tank, initial temperature and other factors.
Specifically, the standard relationship between power and temperature may be derived by a formula, specifically:
in the above formula, PGeneral assemblyTo heat upCurrent input power of the disk, PDecrease in the thickness of the steelThe power consumed during the operation of the humidifier (the value is a fixed value obtained by detecting a certain type of humidifier), tnTo start the operation of the hotplate to the present time, CWater (W)Is the specific heat of water, CDishIs a hot melting method of the heating plate,
dishIn order to improve the quality of the heating plate,
water (W)Quality of water at standard level in the humidification tank, TStarting pointTo start the run the starting temperature of the heating plate.
The derivation of the standard formula for the relationship between power and temperature is described in example 1 and will not be repeated here.
In a third step, the current actual temperature of the heating plate (the average value of the current actual temperatures of the heating plate obtained within 5s may be adopted) is obtained as the temperature TnowOr directly using the preset temperature as the temperature TnowAccording to the formula
=
Calculating to obtain a temperature difference delta T; if the delta T is less than or equal to the threshold D, returning to execute the second step, and if the delta T is greater than the threshold D, judging the heating is dry and giving an alarm.
As the error of a common temperature sensor is +/-2 ℃, the threshold value D is set to be 4-6 ℃, the optimal value is 5 ℃, and the error meets the precision error through big data test.
Fourthly, judging for the second time, and collecting the current temperature T of the air outlet of the humidification tankAir outletThe current temperature T of the air outletAir outletComparing with the threshold value F, if the threshold value F is larger than or equal to the threshold value F, returning to execute the second step; if the current temperature T of the air outletAir outletIf the temperature is less than the threshold value F, the dry combustion state is further confirmed, and an alarm is given.
The threshold value F is 28-34 ℃, and the optimal threshold value is 31 ℃.
The fourth step of secondary judgment is to pass the current temperature T of the air outlet of the humidifying tank on the basis of the primary judgmentAir outletThe comparison of the height of the air inlet and the threshold value F can obtain the final conclusion, because in the anhydrous dry-burning state, if the humidification tank has no water vapor evaporation, the temperature of the air outlet of the humidification tank is necessarily lower only by the heat brought out by the wind, and therefore, whether the humidification tank is really dry-burning can be accurately and simply judged by using the principle so as to avoid misjudgment.
The above embodiment is an example, and in practice, the standard relationship between the power and the temperature may also be obtained by multiple tests, that is, before leaving a factory, the corresponding data of the heating plate input power and the heating plate temperature, which are obtained by multiple tests according to the normal working condition of the breathing humidifier, are one-to-one. In a second step, the normal heating-disc temperature T is obtained in a look-up tableDish。
A breathing humidifier comprises a humidifying tank, a heating plate and a controller. The heating plate is used for heating the humidification tank. The control device is used for controlling the steps of the dry burning detection method.
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the dry fire detection method described above.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A dry burning detection method of a breathing humidifier comprises a humidification tank and a heating plate for heating the humidification tank; the method is characterized in that: the dry burning detection method of the breathing humidifier comprises the following steps:
firstly, controlling a heating plate to work, and maintaining the temperature of the heating plate at a preset temperature;
the second step, the current input power P of the heating plate when the temperature of the heating plate reaches the preset temperature is obtainedGeneral assemblyThe current input power P of the heating plateGeneral assemblySubstituting a standard relation between power and temperature to obtain normal heating plate temperature TDish(ii) a The standard relation between the power and the temperature refers to the corresponding relation between the input power of the heating plate and the temperature of the heating plate under the normal working condition of the breathing humidifier;
thirdly, obtaining the current actual temperature of the heating plate as the temperature TnowThe preset temperature can be used as the temperature TnowAccording to the formula
=
Calculating to obtain a temperature difference delta T; and if the delta T is less than or equal to the threshold D, returning to execute the second step, and if the delta T is greater than the threshold D, judging that the cooking is dry.
2. The dry burn detection method of a respiratory humidifier as claimed in claim 1, wherein: the threshold value D is 4-6 ℃.
3. The dry burn detection method of a respiratory humidifier as claimed in claim 1, wherein: and adding a fourth step after the third step, wherein the fourth step is as follows: changing the input power of the heating plate to a fixed power value PFixing deviceSampling and storing the temperature of the heating plate at regular time, and calculating the rising slope a of the temperature of the heating plate when the number of stored samples reaches M; if the slope a is less than or equal to the threshold value E, returning to execute the second step; if the slope a is larger than the threshold value E, the dry burning state is further confirmed.
4. The dry burn detection method of a respiratory humidifier according to claim 3, wherein: in the fourth step, the heating plate temperature is calculated by using a least square methodThe slope a of the rise; the fixed power PFixing deviceThe value range of (A) is the maximum power of the heating plate
25% -45% of the threshold value E, and the value of the threshold value E is 0.73-0.96.
5. The dry burn detection method of the breath humidifier according to claim 4, wherein: when the output flow of the breathing humidifier is less than 40 liters per minute, the fixed power PFixing deviceIs taken as the maximum power of the heating plate
30% of (a), said threshold E being 0.95; and when the flow rate is more than or equal to 40 liters per minute, the fixed power PFixing deviceIs taken as the maximum power
40% of the above, the threshold value E is 0.73.
6. The dry burn detection method of a respiratory humidifier as claimed in claim 1, wherein: and adding a fourth step after the third step, wherein the fourth step is as follows: collecting the current temperature T of the air outlet of the humidification tankAir outletThe current temperature T of the air outletAir outletComparing with the threshold value F, if the threshold value F is larger than or equal to the threshold value F, returning to execute the second step; if the current temperature T of the air outletAir outletAnd if the temperature is less than the threshold value F, further confirming the dry burning state.
7. The dry burn detection method of a respiratory humidifier as claimed in claim 1, wherein: the standard relation between the power and the temperature is
， PGeneral assemblyFor heating the disc at the present input power, PDecrease in the thickness of the steelIs the power lost during the operation of the humidifier, tnFor starting work from the heating plate toCurrent time, CWater (W)Is the specific heat of water, CDishIs a hot melting method of the heating plate,
dishIn order to improve the quality of the heating plate,
water (W)Quality of water at standard level in the humidification tank, TStarting pointTo start the run the starting temperature of the heating plate.
8. The dry burn detection method of a respiratory humidifier as claimed in claim 1, wherein: the standard relation between the power and the temperature is one-to-one corresponding data of the input power of the heating plate and the temperature of the heating plate, which is obtained by testing for many times according to the normal working condition of the breathing humidifier before delivery.
9. A respiratory humidifier, comprising:
a humidifying tank;
the heating disc is used for heating the humidification tank; and
a control device for controlling the execution of the steps of the dry-fire detection method according to any one of claims 1 to 8.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program when executed by a processor implements the steps of the dry fire detection method of any one of claims 1 to 8.
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Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1370085A (en) * | 1999-08-23 | 2002-09-18 | 菲舍尔和佩克尔保健有限公司 | Humidity controller |
| WO2009085995A1 (en) * | 2007-12-28 | 2009-07-09 | Nellcor Puritan Bennett Llc | Systems and methods for controlling a heated humidifier |
| WO2011078706A2 (en) * | 2009-12-23 | 2011-06-30 | Fisher & Paykel Healthcare Limited | Humidified gases delivery apparatus and methods for controlling same |
| WO2013029364A1 (en) * | 2011-08-26 | 2013-03-07 | Chen Xiaoming | Method and device for quick preparation of high-quality hot water |
| CN107504610A (en) * | 2017-08-07 | 2017-12-22 | 广东美的制冷设备有限公司 | Anti-dry control method, storage medium, control device preventing dry fry and air conditioner |
| CN108158421A (en) * | 2016-12-07 | 2018-06-15 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus anti-dry method, apparatus and cooking apparatus |
| CN108283753A (en) * | 2017-12-16 | 2018-07-17 | 湖南明康中锦医疗科技发展有限公司 | Breathe humidification instrument anti-dry detecting system and method |
| CN109469957A (en) * | 2018-11-23 | 2019-03-15 | 安达斯科技（大连）有限公司 | A kind of electric heating humidifier of anti-dry |
| CN208927355U (en) * | 2018-02-09 | 2019-06-04 | 苏州鱼跃医疗科技有限公司 | A kind of elastic heater of ventilator humidifier |
| CN208927354U (en) * | 2018-02-09 | 2019-06-04 | 苏州鱼跃医疗科技有限公司 | A kind of humidification pot of ventilator |
| CN109974147A (en) * | 2019-04-08 | 2019-07-05 | 广东美的暖通设备有限公司 | Anti-dry control method, humidifier and the air conditioner of humidifier |
| CN109999307A (en) * | 2019-03-11 | 2019-07-12 | 北京怡和嘉业医疗科技股份有限公司 | A kind of detection method and device of humidifier dry-fire condition |
| CN209187820U (en) * | 2018-11-14 | 2019-08-02 | 北京荣瑞世纪科技有限公司 | A kind of ventilator and its humidifying heating device |
| CN110180065A (en) * | 2019-04-24 | 2019-08-30 | 湖南明康中锦医疗科技发展有限公司 | A kind of method and its system of the control of Breathing Suppotion equipment humidifying |
| WO2019192226A1 (en) * | 2018-04-04 | 2019-10-10 | 赫斯提亚深圳生物科技有限公司 | Aerosol generating device and control method therefor |
| WO2020185100A1 (en) * | 2019-03-11 | 2020-09-17 | Fisher & Paykel Healthcare Limited | Systems and methods for controlling humidity output in a humidifier |
| CN112807540A (en) * | 2021-02-05 | 2021-05-18 | 广东普门生物医疗科技有限公司 | Breathing humidifier, dry burning detection method thereof and computer readable storage medium |
| CN112870501A (en) * | 2019-11-29 | 2021-06-01 | 深圳市大雅医疗技术有限公司 | Breathing machine control method and device, breathing machine and storage medium |
| CN214009440U (en) * | 2020-12-16 | 2021-08-20 | 珠海格力电器股份有限公司 | Humidifier |
| WO2021179404A1 (en) * | 2020-03-09 | 2021-09-16 | 山东科技大学 | High-flow rate humidifying respirometer |
| CN113418728A (en) * | 2021-05-31 | 2021-09-21 | 深圳市科曼医疗设备有限公司 | Method, device and equipment for detecting dry-burning state of humidifying equipment and storage medium |
| CN113521481A (en) * | 2020-07-24 | 2021-10-22 | 天津怡和嘉业医疗科技有限公司 | Ventilation treatment equipment and control method thereof |
| CN113750345A (en) * | 2021-09-14 | 2021-12-07 | 湖南明康中锦医疗科技发展有限公司 | Humidifying bottle with temperature control function |
| WO2021248579A1 (en) * | 2020-06-08 | 2021-12-16 | 山东科技大学 | Humidifying therapeutic instrument having humidifying climate control function |
-
2021
- 2021-12-31 CN CN202111677023.2A patent/CN114209953A/en active Pending
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1370085A (en) * | 1999-08-23 | 2002-09-18 | 菲舍尔和佩克尔保健有限公司 | Humidity controller |
| WO2009085995A1 (en) * | 2007-12-28 | 2009-07-09 | Nellcor Puritan Bennett Llc | Systems and methods for controlling a heated humidifier |
| WO2011078706A2 (en) * | 2009-12-23 | 2011-06-30 | Fisher & Paykel Healthcare Limited | Humidified gases delivery apparatus and methods for controlling same |
| WO2013029364A1 (en) * | 2011-08-26 | 2013-03-07 | Chen Xiaoming | Method and device for quick preparation of high-quality hot water |
| CN108158421A (en) * | 2016-12-07 | 2018-06-15 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus anti-dry method, apparatus and cooking apparatus |
| CN107504610A (en) * | 2017-08-07 | 2017-12-22 | 广东美的制冷设备有限公司 | Anti-dry control method, storage medium, control device preventing dry fry and air conditioner |
| CN108283753A (en) * | 2017-12-16 | 2018-07-17 | 湖南明康中锦医疗科技发展有限公司 | Breathe humidification instrument anti-dry detecting system and method |
| CN208927355U (en) * | 2018-02-09 | 2019-06-04 | 苏州鱼跃医疗科技有限公司 | A kind of elastic heater of ventilator humidifier |
| CN208927354U (en) * | 2018-02-09 | 2019-06-04 | 苏州鱼跃医疗科技有限公司 | A kind of humidification pot of ventilator |
| WO2019192226A1 (en) * | 2018-04-04 | 2019-10-10 | 赫斯提亚深圳生物科技有限公司 | Aerosol generating device and control method therefor |
| CN209187820U (en) * | 2018-11-14 | 2019-08-02 | 北京荣瑞世纪科技有限公司 | A kind of ventilator and its humidifying heating device |
| CN109469957A (en) * | 2018-11-23 | 2019-03-15 | 安达斯科技（大连）有限公司 | A kind of electric heating humidifier of anti-dry |
| CN109999307A (en) * | 2019-03-11 | 2019-07-12 | 北京怡和嘉业医疗科技股份有限公司 | A kind of detection method and device of humidifier dry-fire condition |
| WO2020185100A1 (en) * | 2019-03-11 | 2020-09-17 | Fisher & Paykel Healthcare Limited | Systems and methods for controlling humidity output in a humidifier |
| CN109974147A (en) * | 2019-04-08 | 2019-07-05 | 广东美的暖通设备有限公司 | Anti-dry control method, humidifier and the air conditioner of humidifier |
| CN110180065A (en) * | 2019-04-24 | 2019-08-30 | 湖南明康中锦医疗科技发展有限公司 | A kind of method and its system of the control of Breathing Suppotion equipment humidifying |
| CN112870501A (en) * | 2019-11-29 | 2021-06-01 | 深圳市大雅医疗技术有限公司 | Breathing machine control method and device, breathing machine and storage medium |
| WO2021179404A1 (en) * | 2020-03-09 | 2021-09-16 | 山东科技大学 | High-flow rate humidifying respirometer |
| WO2021248579A1 (en) * | 2020-06-08 | 2021-12-16 | 山东科技大学 | Humidifying therapeutic instrument having humidifying climate control function |
| CN113521481A (en) * | 2020-07-24 | 2021-10-22 | 天津怡和嘉业医疗科技有限公司 | Ventilation treatment equipment and control method thereof |
| CN214009440U (en) * | 2020-12-16 | 2021-08-20 | 珠海格力电器股份有限公司 | Humidifier |
| CN112807540A (en) * | 2021-02-05 | 2021-05-18 | 广东普门生物医疗科技有限公司 | Breathing humidifier, dry burning detection method thereof and computer readable storage medium |
| CN113418728A (en) * | 2021-05-31 | 2021-09-21 | 深圳市科曼医疗设备有限公司 | Method, device and equipment for detecting dry-burning state of humidifying equipment and storage medium |
| CN113750345A (en) * | 2021-09-14 | 2021-12-07 | 湖南明康中锦医疗科技发展有限公司 | Humidifying bottle with temperature control function |
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