CN106178220B - A kind of ventilator condensation-proof control system and method - Google Patents
A kind of ventilator condensation-proof control system and method Download PDFInfo
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- CN106178220B CN106178220B CN201610545371.7A CN201610545371A CN106178220B CN 106178220 B CN106178220 B CN 106178220B CN 201610545371 A CN201610545371 A CN 201610545371A CN 106178220 B CN106178220 B CN 106178220B
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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
- A61M16/161—Devices to humidify the respiration air with means for measuring the humidity
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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
- A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
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- Engineering & Computer Science (AREA)
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- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Air Humidification (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention proposes a kind of ventilator condensation-proof control systems, including ventilator humidifier, acquire the proximal end temperature and humidity collection device of temperature value and humidity value in the breathing machine pipeline of patient end, acquire the distal end temperature and humidity collection device of the temperature value and humidity value at ventilator humidifier gas outlet, heating device and condensation-proof controller.In this way, temperature value and humidity value in breathing machine pipeline by acquiring patient end and at ventilator humidifier gas outlet, and according to the temperature value of acquisition, humidity value, the output power of humidifying power and/or the heating device to ventilator humidifier is adjusted, gas relative humidity in control breathing machine pipeline is consistently lower than 100%RH, water is unsaturated i.e. in gas, to reach the requirement that not only can satisfy type breathing-machine humidification ability, but also condensation vapor can be effectively avoided.The invention also provides a kind of ventilator condensation-proof control methods.
Description
Technical field
The present invention relates to medical instruments field, in particular to a kind of ventilator condensation-proof control system and method.
Background technique
In current clinical medicine, effective means of the ventilator as an energy artificial substituting expiratory positive airway pressure function is general
All over for anesthesia respiration management, Breathing Suppotion treatment and the emergency resuscitation during respiratory failure, major operation caused by a variety of causes
In, highly important position is occupied in Modern Medical Field.Ventilator is that one kind can play prevention and treatment respiratory failure,
Complication is reduced, the vital Medical Devices of patients ' lives are saved and extend.
Noninvasive ventilator is a kind of for the purpose of the air for exporting certain pressure or flow velocity, assisted respiartion insufficiency or
Because special circumstances can not autonomous respiration patient respiratory medical instrument, be used clinically for treatment sleep apnea syndrome
(SAS) and related disease.The humidifier of ventilator is used to inject a gas into water or atomized liquid increases air humidity, and humidification is suffered from
Person's respiratory airway reduces damage of the dry gas to respiratory airway, improves comfort level.The humidifier of noninvasive ventilator generates at present
Excessive condensed water is deposited in pipeline or mask, improves the risk of line clogging, or even jeopardizes patient vitals' safety.
It therefore it provides a kind of not only can satisfy the requirement of type breathing-machine humidification ability, but also can prevent from forming the technology of condensed water, be ability
The technical issues of field technique personnel's urgent need to resolve.
Summary of the invention
It, both can be with the technical problem to be solved by the present invention is provide a kind of ventilator condensation-proof control system and method
Meet the requirement of type breathing-machine humidification ability, and can prevent from forming condensed water.
In order to solve the above-mentioned technical problem, solution of the invention is achieved in that a kind of ventilator condensation-proof control
System processed, including ventilator humidifier, and
Proximal end temperature and humidity collection device acquires temperature value and humidity value in the breathing machine pipeline of patient end；
Distal end temperature and humidity collection device acquires temperature value and humidity value at ventilator humidifier gas outlet；
Heating device heats gas in breathing machine pipeline；
Condensation-proof controller, receive the proximal end temperature and humidity collection device and distal end temperature and humidity collection device acquisition it is warm and humid
Angle value, and after being compared with default temperature and humidity value, output control signal control the ventilator humidifier humidifying power and/
Or the output power of the heating device.
In this way, temperature value and humidity in the breathing machine pipeline for passing through acquisition patient end and at ventilator humidifier gas outlet
Value, and the output according to the temperature value of acquisition, humidity value, to the humidifying power and/or the heating device of ventilator humidifier
Power is adjusted, and the gas relative humidity controlled in breathing machine pipeline is consistently lower than 100%RH, i.e., water insatiable hunger in gas
With to reach the requirement that not only can satisfy type breathing-machine humidification ability, but also condensation vapor can be effectively avoided.
Another technical solution of the invention is on above-mentioned basis, the proximal end temperature and humidity collection device and/or remote
End temperature and humidity collection device is Temperature Humidity Sensor.
Another technical solution of the invention is that on above-mentioned basis, the heating device is heater strip, the heating
Silk setting is in breathing machine pipeline and/or in breathing machine pipeline wall.
Another technical solution of the invention is that on above-mentioned basis, the heater strip is uniform along breathing machine pipeline inner wall
It is spaced Spiral distribution.
Another technical solution of the invention is that on above-mentioned basis, the heater strip is printing film resistance wire, institute
It states printing film resistance wire outer surface and is coated with insulating layer.
Another technical solution of the invention is that on above-mentioned basis, the heating device further includes Thermal Cutoffs,
The Thermal Cutoffs is connect with the heater strip.
Another technical solution of the invention is on above-mentioned basis, when the proximal end temperature and humidity collection device and/or
When the temperature of distal end temperature and humidity collection device acquisition is lower than preset temperature, the condensation-proof controller output control signal improves institute
State the output power of heating device.
Another technical solution of the invention be it is above-mentioned basis on, if the proximal end temperature and humidity collection device acquisition
Wet value is H1, the wet value of distal end temperature and humidity collection device acquisition is H2, and H1 < H2；
If H1<△ H and H2<△ H, if or H1<△ H and H2>△ H, the condensation-proof controller output control signal increase
The humidifying power of big ventilator humidifier, until H1=△ H, stops the humidifying power for increasing ventilator humidifier, and ventilator
Humidification machine keeps current humidifying power work；
If H1 > △ H and H2 > △ H, the humidifying of the condensation-proof controller output control signal reduction ventilator humidifier
Power, until H1=△ H, stops the humidifying power for reducing ventilator humidifier, and ventilator humidifier keeps current humidifying function
Rate work；
Wherein, △ H is relative humidity, refers to the percentage of current one volumetric(al) moisture content and saturation moisture content.
Another technical solution of the invention is on above-mentioned basis, additionally provides a kind of ventilator condensation-proof controlling party
Method, comprising the following steps:
Step S01: the temperature value and humidity in the breathing machine pipeline of patient end and at ventilator humidifier gas outlet are acquired
Value；
Step S02: by the way that the temperature value of acquisition is compared with humidity value with default temperature and humidity value, output control letter
Number, control the humidifying power of ventilator humidifier and/or the output power of heating device；
Step S03: step S01 is repeated.
Another technical solution of the invention be it is above-mentioned basis on, the step S02 specifically: when acquisition patient end
Breathing machine pipeline in temperature and/or temperature at ventilator humidifier gas outlet when being lower than preset temperature, output control letter
Number, improve the output power of the heating device；And/or
If acquiring, the wet value in the breathing machine pipeline of patient end is H1, the wet value at acquisition ventilator humidifier gas outlet is
H2, and H1 < H2；
If H1<△ H and H2<△ H, if or H1<△ H and H2>△ H, the condensation-proof controller output control signal increase
The humidifying power of big ventilator humidifier, until H1=△ H, stops the humidifying power for increasing ventilator humidifier, and ventilator
Humidification machine keeps current humidifying power work；
If H1 > △ H and H2 > △ H, the humidifying of the condensation-proof controller output control signal reduction ventilator humidifier
Power, until H1=△ H, stops the humidifying power for reducing ventilator humidifier, and ventilator humidifier keeps current humidifying function
Rate work；
Wherein, △ H is relative humidity, refers to the percentage of current one volumetric(al) moisture content and saturation moisture content.
Another technical solution of the invention is on above-mentioned basis, acquires exhaling for patient end by Temperature Humidity Sensor
Temperature value and humidity value in suction machine pipeline and at ventilator humidifier gas outlet.
Another technical solution of the invention is that on above-mentioned basis, the heating device is heater strip, the heating
Silk setting is in breathing machine pipeline and/or in breathing machine pipeline wall.
Another technical solution of the invention is that on above-mentioned basis, the heater strip is uniform along breathing machine pipeline inner wall
It is spaced Spiral distribution.
Another technical solution of the invention is that on above-mentioned basis, the heater strip is printing film resistance wire, institute
It states printing film resistance wire outer surface and is coated with insulating layer.
Another technical solution of the invention is that on above-mentioned basis, the heating device further includes Thermal Cutoffs,
The Thermal Cutoffs is connect with the heater strip.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.
Fig. 1 is the structural block diagram for indicating ventilator condensation-proof control system involved in a kind of embodiment of this patent.
Specific embodiment
Present invention will now be described in detail with reference to the accompanying drawings., the description of this part be only it is exemplary and explanatory, do not answer
There is any restriction effect to protection scope of the present invention.In addition, description of the those skilled in the art according to this document, it can be right
Feature in this document in embodiment and in different embodiments carries out the corresponding combination.
The device of the invention embodiment is as follows, as shown in Figure 1, a kind of ventilator condensation-proof control system, including ventilator
Humidification machine H, and
Proximal end temperature and humidity collection device S1 acquires temperature value and humidity value in the breathing machine pipeline G of patient end；
Distal end temperature and humidity collection device S2 acquires temperature value and humidity value at the gas outlet ventilator humidifier H；
Heating device i heats gas in breathing machine pipeline G；
Condensation-proof controller C receives the proximal end temperature and humidity collection device S1 and distal end temperature and humidity collection device S2 acquisition
Temperature and humidity value, and after being compared with default temperature and humidity value, output control signal controls the wet of the ventilator humidifier H
Change power and/or the output power of the heating device i.Wherein, ventilator humidifier H is connected with ventilator R, type breathing-machine humidification
The gas outlet of device is connect by breathing machine pipeline G with patient mask M.Preset temperature value can be 21 DEG C, and default humidity value can be with
For 100%RH.
In this way, by acquisition patient end breathing machine pipeline G in and ventilator humidifier gas outlet at temperature value with it is wet
Angle value, and according to the temperature value of acquisition, humidity value, humidifying power and/or the heating device i to ventilator humidifier H
Output power is adjusted, and the gas relative humidity controlled in breathing machine pipeline G is consistently lower than 100%RH, i.e. water in gas
To reach the requirement that not only can satisfy type breathing-machine humidification ability, but also condensation vapor can be effectively avoided in unsaturation.
On the basis of the above embodiments, in another embodiment of the present invention, the proximal end temperature and humidity collection device S1 and/or
Distal end temperature and humidity collection device S2 is Temperature Humidity Sensor.
On the basis of the above embodiments, in another embodiment of the present invention, the heating device i is heater strip, described to add
Heated filament is arranged in breathing machine pipeline G and/or in breathing machine pipeline G wall.
On the basis of the above embodiments, in another embodiment of the present invention, the heater strip is equal along breathing machine pipeline G inner wall
Even interval Spiral distribution.
On the basis of the above embodiments, in another embodiment of the present invention, the heater strip is printing film resistance wire, institute
It states printing film resistance wire outer surface and is coated with insulating layer.
On the basis of the above embodiments, in another embodiment of the present invention, the heating device i further includes Temperature protection
Silk, the Thermal Cutoffs are connect with the heater strip.
On the basis of the above embodiments, in another embodiment of the present invention, when the proximal end temperature and humidity collection device S1 and/
Or the temperature of distal end temperature and humidity collection device S2 acquisition is when being lower than preset temperature, and such as 21 DEG C, condensation-proof controller C output control
Signal processed improves the output power of the heating device i.
On the basis of the above embodiments, in another embodiment of the present invention, if the proximal end temperature and humidity collection device S1 is adopted
The wet value that the wet value integrated acquires as H1, distal end temperature and humidity collection device S2 is H2, and H1 < H2；
If H1<△ H and H2<△ H, if or H1<△ H and H2>△ H, the condensation-proof controller C output control signal increase
The humidifying power of big ventilator humidifier H, until H1=△ H, stops the humidifying power for increasing ventilator humidifier H, and breathe
Machine humidification machine H keeps current humidifying power work；
If H1 > △ H and H2 > △ H, the condensation-proof controller C output control signal reduction ventilator humidifier H's is wet
Change power, until H1=△ H, stops the humidifying power for reducing ventilator humidifier H, and ventilator humidifier H keeps current wet
Change power work；
Wherein, △ H is relative humidity, refers to the percentage of current one volumetric(al) moisture content and saturation moisture content.Such as: such as
Fruit 1 go up to the air gas in water content be 12mg, the aqueous 20mg of saturated air, then the relative humidity of the air be (12mg/20mg) ×
100%.Inventor is by a large amount of test discoveries: in unit volume, under standard pressure, and the water content H (unit: mg/ of saturated air
It L is) function related with temperature, i.e. H=F (T), wherein T is environment temperature.So, in unit volume, standard pressure
Under the aqueous 12mg of respiratory airway to be made, then relative humidity need to only meet △ H=(12mg/F (T)) × 100% (unit: %RH)
?.That is, △ H=A/F (T), wherein
(1) F (T)=(B*eC*T)+S
Wherein A >=10, B ∈ (0,5), C ∈ (0,0.1), S ∈ (- 10,10)
Preferably, A=12, B=3.1319, C=0.0638, S=0；
(2) F (T)=B*T2+C*T+S
A >=10, B ∈ (0,1), C ∈ (- 0.1,0.1), S ∈ (- 10,10)
Preferably, A=12, B=0.0226, C=-0.078, S=3.9733.
Embodiment of the method for the invention is as follows, a kind of ventilator condensation-proof control method, comprising the following steps:
Step S01: acquire temperature value in the breathing machine pipeline G of patient end and at the gas outlet ventilator humidifier H with it is wet
Angle value；
Step S02: by the way that the temperature value of acquisition is compared with humidity value with default temperature and humidity value, output control letter
Number, control the humidifying power of ventilator humidifier H and/or the output power of heating device i；
Step S03: step S01 is repeated.
In this way, by acquisition patient end breathing machine pipeline G in and ventilator humidifier gas outlet at temperature value with it is wet
Angle value, and according to the temperature value of acquisition, humidity value, humidifying power and/or the heating device i to ventilator humidifier H
Output power is adjusted, and the gas relative humidity controlled in breathing machine pipeline G is consistently lower than 100%RH, i.e. water in gas
To reach the requirement that not only can satisfy type breathing-machine humidification ability, but also condensation vapor can be effectively avoided in unsaturation.
On the basis of the above embodiments, in another embodiment of the present invention, the step S02 specifically: as acquisition patient
When the temperature at temperature and/or the gas outlet ventilator humidifier H in the breathing machine pipeline G at end is lower than preset temperature, such as 21 DEG C,
Output control signal, improves the output power of the heating device i；And/or
If acquiring the wet value in the breathing machine pipeline G of patient end to be H1, acquire the wet value at the gas outlet ventilator humidifier H
For H2, and H1 < H2；
If H1<△ H and H2<△ H, if or H1<△ H and H2>△ H, the condensation-proof controller C output control signal increase
The humidifying power of big ventilator humidifier H, until H1=△ H, stops the humidifying power for increasing ventilator humidifier H, and breathe
Machine humidification machine H keeps current humidifying power work；
If H1 > △ H and H2 > △ H, the condensation-proof controller C output control signal reduction ventilator humidifier H's is wet
Change power, until H1=△ H, stops the humidifying power for reducing ventilator humidifier H, and ventilator humidifier H keeps current wet
Change power work；
Wherein, △ H is relative humidity, refers to the percentage of current one volumetric(al) moisture content and saturation moisture content.
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.
Claims (13)
1. a kind of ventilator condensation-proof control system, including ventilator humidifier, which is characterized in that further include:
Proximal end temperature and humidity collection device acquires temperature value and humidity value in the breathing machine pipeline of patient end；
Distal end temperature and humidity collection device acquires temperature value and humidity value at ventilator humidifier gas outlet；
Heating device heats gas in breathing machine pipeline；
Condensation-proof controller receives the temperature and humidity of the proximal end temperature and humidity collection device and the acquisition of distal end temperature and humidity collection device
Value, and after being compared with default temperature and humidity value, output control signal control the ventilator humidifier humidifying power and/or
The output power of the heating device；
If the wet value of the proximal end temperature and humidity collection device acquisition is H1, the wet value of distal end temperature and humidity collection device acquisition is H2,
And H1 < H2；
If H1<△ H and H2<△ H, if or H1<△ H and H2>△ H, the condensation-proof controller output control signal increase exhales
The humidifying power of suction machine humidification machine, until H1=△ H, stops the humidifying power for increasing ventilator humidifier, and type breathing-machine humidification
Device keeps current humidifying power work；
If H1 > △ H and H2 > △ H, the humidifying function of the condensation-proof controller output control signal reduction ventilator humidifier
Rate, until H1=△ H, stops the humidifying power for reducing ventilator humidifier, and ventilator humidifier keeps current humidifying power
Work；
Wherein, △ H is relative humidity, refers to the percentage of standard pressure present air unit volume water content and saturation moisture content
Than.
2. ventilator condensation-proof control system according to claim 1, which is characterized in that the proximal end humiture collection dress
It sets and/or distal end temperature and humidity collection device is Temperature Humidity Sensor.
3. ventilator condensation-proof control system according to claim 1, which is characterized in that the heating device is heating
Silk, the heater strip setting is in breathing machine pipeline and/or in breathing machine pipeline wall.
4. ventilator condensation-proof control system according to claim 3, which is characterized in that the heater strip is along ventilator pipe
Road inner wall uniform intervals Spiral distribution.
5. ventilator condensation-proof control system according to claim 3, which is characterized in that the heater strip is printing film
Resistance wire, printing film resistance wire outer surface are coated with insulating layer.
6. ventilator condensation-proof control system according to claim 3, which is characterized in that the heating device further includes temperature
Fuse is spent, the Thermal Cutoffs is connect with the heater strip.
7. ventilator condensation-proof control system according to claim 1, which is characterized in that when the proximal end humiture collection
When device and/or the temperature of distal end temperature and humidity collection device acquisition are lower than preset temperature, the condensation-proof controller output control
Signal improves the output power of the heating device.
8. a kind of ventilator condensation-proof control method, which comprises the following steps:
Step S01: the temperature value and humidity value in the breathing machine pipeline of patient end and at ventilator humidifier gas outlet are acquired；
Step S02: by the way that the temperature value of acquisition is compared with humidity value with default temperature and humidity value, output control signal, control
The humidifying power of ventilator humidifier processed and/or the output power of heating device；
Step S03: step S01 is repeated；
Wherein, the step S02 specifically: temperature and/or ventilator humidifier in the breathing machine pipeline of acquisition patient end
When temperature at gas outlet is lower than preset temperature, output control signal improves the output power of the heating device；And/or
If acquiring, the wet value in the breathing machine pipeline of patient end is H1, the wet value at acquisition ventilator humidifier gas outlet is H2,
And H1 < H2；
If H1<△ H and H2<△ H, if or H1<△ H and H2>△ H, condensation-proof controller output control signal increase ventilator
The humidifying power of humidification machine, until H1=△ H, stops the humidifying power for increasing ventilator humidifier, and ventilator humidifier is protected
Hold current humidifying power work；
If H1 > △ H and H2 > △ H, condensation-proof controller output control signal reduces the humidifying power of ventilator humidifier, directly
To H1=△ H, stop the humidifying power for reducing ventilator humidifier, and ventilator humidifier keeps current humidifying power work；
Wherein, △ H is relative humidity, refers to the percentage of standard pressure present air unit volume water content and saturation moisture content
Than.
9. ventilator condensation-proof control method according to claim 8, which is characterized in that acquired by Temperature Humidity Sensor
Temperature value and humidity value in the breathing machine pipeline of patient end and at ventilator humidifier gas outlet.
10. ventilator condensation-proof control method according to claim 8, which is characterized in that the heating device is heating
Silk, the heater strip setting is in breathing machine pipeline and/or in breathing machine pipeline wall.
11. ventilator condensation-proof control method according to claim 8, which is characterized in that the heater strip is along ventilator
Inner wall of the pipe uniform intervals Spiral distribution.
12. ventilator condensation-proof control method according to claim 8, which is characterized in that the heater strip is that printing is thin
Film resistance silk, printing film resistance wire outer surface are coated with insulating layer.
13. ventilator condensation-proof control method according to claim 8, which is characterized in that the heating device further includes
Thermal Cutoffs, the Thermal Cutoffs are connect with the heater strip.
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| CN109200424A (en) * | 2017-07-03 | 2019-01-15 | 深圳市大雅医疗技术有限公司 | A kind of intelligent control method and device of breathing circuit internal temperature and humidity |
| CN110585548B (en) * | 2019-09-12 | 2022-09-02 | 绍兴安迪斯医疗科技有限公司 | Atomizing heating device and implementation method thereof |
| CN111110975B (en) * | 2019-12-02 | 2022-09-02 | 湖南明康中锦医疗科技发展有限公司 | Temperature and humidity control system and method for humidifier of respiratory support equipment |
| CN111110980A (en) * | 2019-12-31 | 2020-05-08 | 湖南明康中锦医疗科技发展有限公司 | Humidification adjusting method of respiratory support equipment and respiratory support equipment |
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| DE10318383B3 (en) * | 2003-04-23 | 2004-07-01 | Dräger Medical AG & Co. KGaA | Breathing gas moisturizer for CPAP breathing apparatus has evaporator in side branch from inspiration line and has temperature and humidity sensors connected to control circuit |
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| CN106178220A (en) | 2016-12-07 |
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Address after: 410205 Room 101, 1st floor, north of superstar entrepreneurship base, No. 8 Lujing Road, high tech Development Zone, Changsha, Hunan Patentee after: Hunan Mingkang Zhongjin Medical Technology Co.,Ltd. Address before: 410205 Room 102, 1st floor, north of superstar entrepreneurship base, No. 8 Lujing Road, high tech Development Zone, Changsha, Hunan Patentee before: HUNAN MICOME ZHONGJIN MEDICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |