CN206020058U - Pinpoint accuracy heat moisture exchanger moisture loss tester - Google Patents
Pinpoint accuracy heat moisture exchanger moisture loss tester Download PDFInfo
- Publication number
- CN206020058U CN206020058U CN201620856564.XU CN201620856564U CN206020058U CN 206020058 U CN206020058 U CN 206020058U CN 201620856564 U CN201620856564 U CN 201620856564U CN 206020058 U CN206020058 U CN 206020058U
- Authority
- CN
- China
- Prior art keywords
- tank
- water
- air
- moisture exchanger
- heat moisture
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Air Humidification (AREA)
Abstract
The utility model discloses a kind of pinpoint accuracy heat moisture exchanger moisture loss tester, belongs to heat moisture exchanger technical field of performance test, its structure includes that closed tank, the inside of the tank are provided with expiration pipeline and suction line；Expiration pipeline connection mode intends the air bag of human lung, and suction line connects heat moisture exchanger；Tank is also connected with exhalation vents and suction outlet respectively, and the exhalation vents connect heat moisture exchanger, and the suction outlet connects the air bag；The inside of the tank is provided with automatic water-replenishing device.During use, automatic water-replenishing device meeting automatic water supplement maintains stablizing for the water surface elevation in water storage device.Height of water level in tank of the present utility model can remain stable, and the admission pressure of heat moisture exchanger therefore can be kept stable, the degree of accuracy of test is greatly improved.
Description
Technical field
This utility model is related to heat moisture exchanger technical field of performance test, a kind of specifically wet friendship of pinpoint accuracy heat
Parallel operation moisture loss tester, it is adaptable to test the moisture retention of heat moisture exchanger.
Background technology
Heat moisture exchanger (abbreviation HME) is a kind of device humidified by breathing gas to people, general medical gases
Lack enough moisture, it is difficult to be adapted to patients with respiratory tract psychological need, heat moisture exchanger is conveyed to respiratory tract for improving
The moisture and temperature of gas, they mainly expect the part for being either independently or as respiratory system.
The operation principle of heat moisture exchanger is to retain the part moisture and heat in patient expiration, and will in breathing process
Which returns to respiratory tract, and therefore, its performance of keeping humidity is a very important index, before heat moisture exchanger comes into operation, must
Need be through the test of performance of keeping humidity, it is to avoid performance of keeping humidity underproof product causes serious consequence when putting into Clinical practice.
At present, the performance of keeping humidity for carrying out HME is tested adopted method and principle and is：The pulmonary of a simulation is made, is pressed
HME is installed according to Clinical practice, through simulated respiration for a period of time after (typically 24 hours longer), weigh pulmonary moisture loss
Weight, then divided by turnover pulmonary gas volume, characterize the ability of HME moisturizings with quotient.
Above-mentioned method of testing can accurately react the moisture-retaining capacity of HME, however, existing HME moisture losses test
Instrument haves the shortcomings that poor accuracy, there is larger deviation between its test result and use result when actually coming into operation,
In order to reduce above-mentioned deviation as far as possible, those skilled in the art has done substantial amounts of research improvement work, has made test process most
The process for simulating real patient respiratory of big degree, such as, makes simulation patient exhalation and the air of suction gas pass through heating
Human body environment is simulated in water-bath, the temperature constant of heated water bath at 37 DEG C or so, as far as possible, but, above-mentioned deviation is contracted to one
After determining degree, just further cannot reduce.To this deviation, can only process as reasonable error, cause HME moisture losses
The poor accuracy of tester, clinical reference are poor.
Utility model content
For solving above-mentioned defect of the prior art, the purpose of this utility model is to provide a kind of pinpoint accuracy heat wet friendship
Parallel operation moisture loss tester, improves the degree of accuracy of heat moisture exchanger moisture loss test result.
The technical scheme in the invention for solving the technical problem is：
Pinpoint accuracy heat moisture exchanger moisture loss tester, including tank, the lid at tank and its place that is open
Into being tightly connected, the inside of the tank is provided with expiration pipeline and suction line to plate shape；Expiration pipeline one end connection
The air bag of simulation human lung, the expiration pipeline other end are passed through in the water of tank, and described suction line one end is used for connecting
Heat moisture exchanger, the suction line other end are passed through in the water of tank；Tank is also gone out with exhalation vents and air-breathing respectively
Mouth is connected, and the exhalation vents connect heat moisture exchanger, and the suction outlet connects the air bag；
The inside of the tank is provided with automatic water-replenishing device, and the automatic water-replenishing device includes position-limiting cover and float,
The position-limiting cover is fixedly mounted in tank, position-limiting cover for bottom end opening cover body, float be located at position-limiting cover inside and
Move freely on the water surface inside position-limiting cover, on position-limiting cover top surface, position corresponding with float is provided with inlet opening, and inlet opening passes through
Water inlet pipe connects water source.
In tank, at 37 DEG C ± 0.5 DEG C, similar to body temperature, gas, can mould after water-bath for the temperature of water
Intend the air of characteristics of contaminated respiratory droplets or suction.
Through the further investigation to HME moisture loss tester deviations, it is found that the reason for producing deviation is, test process
In, the resistance that the air-flow of entrance HME is subject to during beginning is big, causes the gas flow of each " breathing " turnover test lung less, and with
The carrying out of test, the intake resistance of HME can be tapered into, the gas for causing each " breathing " to pass in and out becomes big.Therefore, in test
During, it is impossible to accurately control air inflow number, so as to cannot accurate evaluation HME clinical moisture-keeping functions.And patient's reality
When border uses, its pressure for breathing is stable, the unstable appearance that result in above-mentioned deviation of exactly HME admission pressures.
The intake resistance that the pressure in the tank of heated water bath can directly affect HME is carried out for gas, stores warm water
Tank be closing, when the water yield in tank more, when waterline is higher, the sky of tank content improving inspiration by invigorating kidney-QI body
Between little, cause air pressure in container big, the intake resistance of HME is larger；With the carrying out of test, the water in container is consumed, when
When waterline in container declines, the space of tank content improving inspiration by invigorating kidney-QI body becomes big, after air enters container, suffered pressure
Power diminishes, and the intake resistance of HME also diminishes.Above-mentioned phenomenon result in the very unstable situation of admission pressure of HME.
After being provided with automatic water-replenishing device, when the water level decreasing in tank, float decline can automatically open up into
Water hole, when automatic water supplement is to original height of water level, inlet opening is closed by float, stops moisturizing, therefore can maintain height of water level
In stable height, in test process, after gas enters tank, the air pressure in tank maintains stable state,
So as to maintain stablizing for heat moisture exchanger admission pressure, meet situation during patient respiratory, basically identical with Clinical practice, improve
The degree of accuracy of test result.
Further technical scheme is：The inside of the tank is provided with the dividing plate of a longitudinal direction, the side of the dividing plate
Edge is fixedly connected on the medial wall of tank, and the top edge of dividing plate is brought into close contact with the cover plate, and the lower limb of dividing plate prolongs
Extend below the water surface of tank；Expiration through hole and air-breathing through hole, expiration through hole and air-breathing through hole is provided with the dividing plate
It is respectively positioned on below the water surface, the expiration pipeline is connected to expiration through hole, the suction line is connected to air-breathing through hole.
Dividing plate plays fixed expiration pipeline and suction line and separates gas when exhaling and gas during air-breathing
Effect.After arranging dividing plate, the gas of expiration pipeline is emerged from expiration through hole, the heating and moistening of water in the tank,
The state of the gas of characteristics of contaminated respiratory droplets is simulated, as the density of gas is little, which can rise to the water surface, after gas rises to the water surface
Cause the region air pressure to rise, so gas can be flowed out from exhalation vents, enter heat moisture exchanger, simulate human exhaled breath's
Process.Likewise, dry air enters suction line through heat moisture exchanger, and then enter through air-breathing through hole and suction outlet
Air bag, simulates human body breathing process.
Further technical scheme is：At the top of tank, the corresponding dividing plate is respectively provided on two sides with valve chamber, described exhales
The connectivity part and the suction outlet of air pipe and air bag is located in a valve chamber, the company of the suction line and heat moisture exchanger
Logical place and the exhalation vents are located in another valve chamber；Expiration pipeline is provided with restriction gas by air bag stream with the connectivity part of air bag
To the first check valve of expiration pipeline, the second check valve for limiting that gas is flowed to air bag by tank at suction outlet, is provided with,
Suction line is provided with the 3rd check valve for limiting that gas is flowed to suction line by heat moisture exchanger with the connectivity part of heat moisture exchanger,
The 4th check valve for limiting that gas is flowed to heat moisture exchanger by tank is provided with exhalation vents.
Air-flow import and export on each pipeline arranges check valve, the flow direction of reliable control air-flow, it is to avoid gas
Stream is diffused into other positions, affects the accuracy of test result.Can lead between heat moisture exchanger and exhalation vents and suction line
Cross three-limb tube to be attached, also can be attached by three-limb tube between air bag and suction outlet and expiration pipeline,
The bifurcation of tee T is in valve chamber, so that the structure of equipment is compacter, and valve chamber forms protection to check valve, it is to avoid single
To valve by external influence, extend the service life of check valve, be easy to the maintenance in later stage.
Further technical scheme is：The inside of the tank is provided with the first temperature of heating element heater and measurement water temperature
Sensor, the heating element heater extend to below the water surface, and the actuator of heating element heater is connected with first temperature sensor.
In order to accurately simulate characteristics of contaminated respiratory droplets and suction gas, the coolant-temperature gage in tank should at 37 DEG C ± 0.5 DEG C,
The gas of test needs to enter heat moisture exchanger or air bag after the heated water bath of tank.First temperature biography is set
Sensor and heating element heater, the water temperature in the first temperature sensor real-time monitoring tank, when water temperature drop, the first temperature is passed
Actuator sending signal of the sensor to heating element heater, the actuator of heating element heater can control heating element heater and be operated, and keep storage
In water container, water temperature is suitable and stable.
Further technical scheme is：The air bag is located at the inside of air container, and the air container is provided with ventilation
Hole and air bag connecting tube stretch out hole, and the passage connects two-way airflow generator.Outside in air bag arranges air container, with
When, in air container passage connection two-way airflow generator, by the change of air pressure in air container, make air bag shrink or
Person expands, and can more really simulate situation when human lung breathes, can improve the clinical reference of test result.
Further technical scheme is：Described tank and air container are respectively positioned in a body of thermal insulating box, described exhausted
The side of hot tank body is provided with door, remaining side-closed of body of thermal insulating box；The side wall of the body of thermal insulating box is provided with and supplies hot and humid area
The connecting hole that device joint and two-way airflow generator connecting tube are passed through.Body of thermal insulating box is set, and the temperature control in casing is at 37 DEG C
± 1 DEG C, and in the presence of body of thermal insulating box, the constant of temperature can be maintained so that tester air inlet and outlet can be real
Simulation human body environment, improves the accuracy and clinical reference of test result.
Further technical scheme is：The body of thermal insulating box is provided with air themperature in thermal light source illumination component and detection case body
Second temperature sensor, the actuator of the thermal light source illumination component is connected with the second temperature sensor.Arrange the
Two temperature sensors and thermal light source illumination component, the air themperature in second temperature sensor real-time monitoring body of thermal insulating box, when exhausted
When air themperature in hot tank body declines, actuator sending signal of the second temperature sensor to thermal light source illumination component, hot light
The controllable thermal light source illumination component of the actuator of source lighting element is operated, and keeps the suitable of air themperature in body of thermal insulating box
With stable.
Further technical scheme is：The water source is the storage tank being arranged in body of thermal insulating box side wall inner surfaces, water storage
Water inlet is provided with the top of case, and storage tank is located at the top of the tank.Storage tank is arranged in body of thermal insulating box to be used for
Supply water for tank, the temperature difference of the water temperature being easy in the water temperature and the tank that reduce in storage tank, so that reduce storage tank
Impact when interior water enters tank to the water temperature of tank, is easy to the perseverance for maintaining water temperature in storage tank and tank
Fixed, the accuracy of test result is improved, also reducing energy consumption.
The beneficial effects of the utility model are：
1st, tester of the present utility model, is provided with automatic water-replenishing device, when the water level decreasing in tank, under float
Drop can automatically open up inlet opening, and when automatic water supplement is to original height of water level, inlet opening is closed by float, stop moisturizing, therefore may be used
Height of water level is maintained stable height, in test process, after gas enters tank, the air pressure in tank is maintained
In stable state, so as to maintain stablizing for heat moisture exchanger unit interval input and output gas volume, the accurate of test result is improved
Degree.
2nd, automatic water-replenishing device structure of the present utility model is very simple, is not provided with various valves, it is easy to operate and real
Apply, and substantially without maintenance, long service life.
3rd, tester of the present utility model, is provided with the expiration pipeline and suction nozzle of guiding gas flow direction in tank
Road, gas after the heated water bath of tank enter heat moisture exchanger or air bag, can really simulate human body and exhale
Gas and the temperature and humidity of air-breathing, improve the accuracy of test result and the referential of clinic.
4th, the first temperature sensor and heating element heater is provided with tank, be provided with second temperature biography in body of thermal insulating box
Sensor and thermal light source illumination component, are able to maintain that the water temperature of tank at 37 DEG C ± 0.5 DEG C, maintain the air in body of thermal insulating box
Temperature simulates human body environment at 37 DEG C ± 1 DEG C, truly, improves the accuracy of test result and the referential of clinic.
5th, dividing plate is provided with tank, the air-flow import and export on each pipeline arranges check valve, reliable control
The flow direction of air-flow, it is to avoid Diffusion of gas stream to other positions causes the accuracy for affecting test result.
6th, air container is set in the outside of air bag, meanwhile, the passage connection two-way airflow generator in air container,
By the change of air pressure in air container, air bag is made to shrink or expand, when can more really simulate human lung's breathing
Situation, the clinical reference of test result can be improved.
7th, the storage tank of automatic water-replenishing device is arranged on the inside of body of thermal insulating box, is easy to water temperature and the storage that reduces in storage tank
The temperature difference of the water temperature in water container, so that reduce the shadow of the water temperature during entrance tank of the water in storage tank to tank
Ring, be easy to constant, the accuracy of raising test result for maintaining water temperature in storage tank and tank, also reduce heating element heater
Operating frequency, so as to energy consumption.
Description of the drawings
Structural representations of the Fig. 1 for this utility model embodiment；
Structural representations of the Fig. 2 for this utility model embodiment automatic water-replenishing device；
Front views of the Fig. 3 for this utility model embodiment tank；
Left views of the Fig. 4 for Fig. 3；
Fig. 5 is the structural representation of the dividing plate of tank in this utility model embodiment；
Fig. 6 is the structural representation of air container in this utility model embodiment；
Fig. 7 is the structural representation of the cover plate of tank in this utility model embodiment.
In figure：1- air bags, 2- body of thermal insulating box, 3- air containers, the first temperature sensors of 4-, 5- heat moisture exchanger joints,
6- heat moisture exchangers, 7- heat moisture exchanger connecting tubes, 8- second temperature sensors, 9- cover plates, 10- heating element heaters, 11- water storages hold
Device, 12- thermal light source illumination components, 13- floats, 14- position-limiting covers, 15- water inlet pipes, 16- storage tanks, 17- expiration pipelines, 18- are inhaled
Air pipe, 19- pneumatopyles, 20- trachea jacks, 21- dividing plates, 22- valve chambers, 23- expiration through holes, 24- air-breathing through holes, 25- are ventilated
Stretch out hole, 27- heating element heater jacks, 28- the first temperature sensor jacks in hole, 26- air bag connecting tubes.
Specific embodiment
With reference to Figure of description and specific embodiment, the utility model will be further described：
As shown in figure 1, pinpoint accuracy heat moisture exchanger moisture loss tester, including tank 11, tank 11
Formed with the cover plate 9 at its place of opening and be tightly connected, the inside of the tank 11 is provided with expiration pipeline 17 and suction line 18；
17 one end connection mode of the expiration pipeline intends the air bag 1 of human lung, and 17 other end of expiration pipeline is passed through the water of tank 11
In, 18 one end of the suction line is used for connecting heat moisture exchanger 6, and 18 other end of suction line is passed through the water of tank 11
In；Tank 11 is also connected with exhalation vents and suction outlet respectively, and the exhalation vents connect heat moisture exchanger 6, institute
State suction outlet and connect the air bag 1.
As shown in Figure 3, Figure 4, the inside of the tank 11 is provided with the dividing plate 21 of a longitudinal direction, the side of the dividing plate 21
Edge is fixedly connected on the medial wall of tank 11, and the top edge of dividing plate 21 is brought into close contact with the cover plate 9, under dividing plate 21
Edge extends to below the water surface of tank 11.The structure of dividing plate 21 is as shown in figure 5, be provided with expiration through hole 23 on dividing plate 21
With air-breathing through hole 24, expiration through hole 23 and air-breathing through hole 24 be respectively positioned on below the water surface, and it is logical that the expiration pipeline 17 is connected to expiration
At hole 23, the suction line 18 is connected at air-breathing through hole 24.
Dividing plate 21 plays fixed expiration pipeline 17 and suction line 18 and by gas when exhaling and gas during air-breathing
The effect for separating.After arranging dividing plate 21, the gas of expiration pipeline 17 is emerged from expiration through hole 23, in tank 11
The heating and moistening of water, simulates the state of the gas of characteristics of contaminated respiratory droplets, and as the density of gas is little, which can rise to the water surface, gas
Cause the region air pressure to rise after rising to the water surface, so gas can be flowed out from exhalation vents, enter heat moisture exchanger 6,
Simulate the process of human exhaled breath.Likewise, dry air enters suction line through heat moisture exchanger 6, and then through air-breathing
Through hole 24 and suction outlet enter air bag 1, simulate human body breathing process.
At the top of tank 11, the corresponding dividing plate 21 is respectively provided on two sides with valve chamber 22, the expiration pipeline 17 and air bag
1 connectivity part and the suction outlet are located in a valve chamber 22, the connectivity part of the suction line 18 and heat moisture exchanger 6 and
The exhalation vents are located in another valve chamber 22；Expiration pipeline 17 is provided with restriction gas with the connectivity part of air bag 1 and is flowed by air bag 1
To the first check valve of expiration pipeline 17, the second list for limiting that gas is flowed to air bag 1 by tank 11 at suction outlet, is provided with
To valve, suction line 18 is provided with restriction gas with the connectivity part of heat moisture exchanger 6 and flows to suction line 18 by heat moisture exchanger 6
3rd check valve, is provided with the 4th check valve for limiting that gas is flowed to heat moisture exchanger 6 by tank 11 at exhalation vents.
Air-flow import and export on each pipeline arranges check valve, the flow direction of reliable control air-flow, it is to avoid gas
Stream is diffused into other positions, affects the accuracy of test result.Lead between heat moisture exchanger 6 and exhalation vents and suction line 18
Cross three-limb tube to be attached, be attached also by three-limb tube between air bag 1 and suction outlet and expiration pipeline 17,
The bifurcation of tee T is in valve chamber 22, so that the structure of equipment is compacter, and valve chamber 22 forms protection to check valve, keeps away
Exempt from check valve by external influence, extend the service life of check valve, be easy to the maintenance in later stage.
The air bag 1 is located at the inside of air container 3, and the structure of the air container 3 is as shown in fig. 6, in air container 3
It is provided with passage 25 and air bag connecting tube stretches out hole 26, the passage 25 connects two-way airflow generator, and air bag connecting tube is stretched
26 connecting tubes supplied between air bag 1 and expiration pipeline 17 and suction outlet of portalling are passed through.Outside in air bag 1 arranges air container
3, meanwhile, the connection two-way airflow generator of passage 25 in air container 3, by the change of air pressure in air container 3, makes gas
Capsule 1 shrinks or expands, and can more really simulate situation when human lung breathes, and can improve the clinical ginseng of test result
The property examined.
Described tank 11 and air container 3 are respectively positioned in a body of thermal insulating box 2, and the side of the body of thermal insulating box 2 sets
There are door, remaining side-closed of body of thermal insulating box 2；The side wall of the body of thermal insulating box 2 is provided with for heat moisture exchanger joint 5 and two-way
The connecting hole that flow generator connecting tube is passed through.Body of thermal insulating box 2 is set, the temperature control in casing at 37 DEG C ± 1 DEG C, and exhausted
In the presence of hot tank body, the constant of temperature can be maintained so that tester air inlet and outlet really can simulate human body environment,
Improve the accuracy and clinical reference of test result.
The inside of the tank 11 is provided with the first temperature sensor 4 of heating element heater 10 and measurement water temperature, described plus
Thermal element 10 extends to below the water surface, and the actuator of heating element heater 10 is connected with first temperature sensor 4.
In order to accurately simulate the gas of characteristics of contaminated respiratory droplets and suction, the coolant-temperature gage in tank 11 should be at 37 DEG C ± 0.5
DEG C, the gas of test needs to enter heat moisture exchanger 6 or air bag 1 after the heated water bath of tank 11.Arrange the
One temperature sensor 4 and heating element heater 10, the water temperature in 4 real-time monitoring tank 11 of the first temperature sensor, when under water temperature
During drop, actuator sending signal of first temperature sensor 4 to heating element heater 10, the actuator of heating element heater 10 is controllable to be heated
Element 10 is operated, and in holding tank 11, water temperature is suitable and stable.
The body of thermal insulating box 2 is provided with the second temperature sensor of air themperature in thermal light source illumination component 12 and detection case body
8, the actuator of the thermal light source illumination component 12 is connected with the second temperature sensor 8.Second temperature sensor 8 is set
With thermal light source illumination component 12, the air themperature in 8 real-time monitoring body of thermal insulating box 2 of second temperature sensor, when in body of thermal insulating box 2
Air themperature decline when, actuator sending signal of the second temperature sensor 8 to thermal light source illumination component 12, thermal light source illuminate
The controllable thermal light source illumination component 12 of the actuator of element 12 is operated, and keeps the suitable of air themperature in body of thermal insulating box 2
With stable.Thermal light source illumination component 12 is on the base plate of body of thermal insulating box 2.
Sealing ring is provided between tank 11 and cover plate 9, both are tightly connected in formation, it is to avoid in tank 11
Water is affected by the effect such as evaporating, and improves the accuracy of test result.The structure of cover plate 9 is as shown in fig. 7, cover plate 9 is provided with
Pneumatopyle 19, trachea jack 20, heating element heater jack 27 and the first temperature sensor jack 28.Pneumatopyle 19 is supplied and 1 phase of air bag
The pipeline of connection is passed through, and trachea jack 20 is passed through for the pipeline being connected with heat moisture exchanger 6, and heating element heater jack 27 is for heating
Element 10 is passed through, and the first temperature sensor jack 28 is passed through for the first temperature sensor 4.
The inside of the tank 11 is provided with automatic water-replenishing device, as shown in Figures 1 and 2, the automatic water-replenishing device
Including position-limiting cover 14 and float 13, the position-limiting cover 14 is fixedly mounted in tank 11, and position-limiting cover 14 is bottom end opening
Cover body, float 13 are located inside position-limiting cover 14 and move freely on the water surface inside position-limiting cover 14, on 14 top surface of position-limiting cover with
13 corresponding position of float is provided with inlet opening, and inlet opening connects storage tank 16 by water inlet pipe 15.
The storage tank 16 is arranged in 2 side wall inner surfaces of body of thermal insulating box, and the top of storage tank 16 is provided with water inlet, water storage
Case 16 is located at the top of the tank 11.Storage tank 16 is arranged on for supplying water for tank 11 in body of thermal insulating box 2,
The water temperature being easy in diminution storage tank 16 and the temperature difference of the water temperature in tank 11, so that reduce the entrance of the water in storage tank 16
Impact during tank 11 to the water temperature of tank 11, is easy to the perseverance for maintaining water temperature in storage tank 16 and tank 11
Fixed, the accuracy of test result is improved, also reducing energy consumption.
For ease of observing the working condition of tester, air bag 1, air container 3, tank 11, expiration pipeline 17, air-breathing
The parts such as pipeline 18, dividing plate 21 and position-limiting cover 14 are transparent material making.In the present embodiment, air bag 1 anaesthetizes air bag using 2L,
3 diameter of air container is about 150mm, and maximum volume is 7L, flat bottom beaker of the tank 11 using 2L, thermal light source illumination component
12 household illuminating lamps for adopting common 15W～40W, the power of heating element heater 10 is 50W～100W, each connecting line employing
Pvc pipe, expiration pipeline 17 and suction line 18 adopt PE-PVA corrugated tubes, its internal diameter 22mm～25mm, remove joint foreign minister
250mm, remaining part are manufactured using acrylate.
Heat moisture exchanger joint 5 is cylindrical taper joint.
When being tested to the performance of keeping humidity of heat moisture exchanger using this utility model tester, test condition is：
1st, the air for being conveyed to heat moisture exchanger 6 from dry air source should be temperature for 23 DEG C ± 1 DEG C, and water content is less than
1mg/L.
2nd, heat moisture exchanger should be tested under the conditions of specified in table 1.
| Test condition | Tidal volume (ml) | Frequency (min-1) | Ventilation (L/min) | Inspiratory/expiratory | Peak inspiratory flow (L/min) |
| 1 | 1000 | 10 | 10 | 1:1 | 31.4 |
| 2 | 750 | 12 | 9 | 1:1 | 28.3 |
| 3 | 500 | 15 | 7.5 | 1:1 | 23.6 |
| 4 | 250 | 20 | 5 | 1:1 | 15.7 |
Table 1：Test condition
If tidal volume is more than 1L, carry out under the maximum tidal volume that heat moisture exchanger Producer is recommended, and using exhaling
Suction frequency is 10 times/min, and inspiratory/expiratory is 1:1.
During the performance of keeping humidity of test heat moisture exchanger, method of testing is as follows：
Step 1：Two-way airflow generator is connected with air container 3 by passage 27, by the patient of heat moisture exchanger 6
Port (port that heat moisture exchanger is connected with patients with respiratory tract) connects exhalation vents and suction line respectively by tee pipe fitting
18, and heat moisture exchanger 6 is connected dry air source and air vent by heat moisture exchanger connecting tube 7.
Step 2：Two-way airflow generator is adjusted, in machine port (heat moisture exchanger and the respiratory system of heat moisture exchanger
Patient ports connection port) measurement, to obtain the hot and humid area specified specified in table 1 and in heat moisture exchanger Producer
Test condition in device opereating specification.Adjust the air mass flow conveyed by dry air source so as to more than 1 times but less than 1.5 times
The peak inspiratory flow of suction heat moisture exchanger machine end, by the air inlet port connection dry air source of heat moisture exchanger 6.
Step 3：The same type of heat moisture exchanger of heat moisture exchanger is tried with confession, in 37 DEG C ± 0.5 DEG C of bath temperature
Tester at least 1h is operated with the air themperature of 2 interior 37 DEG C ± 1 DEG C of body of thermal insulating box, the temperature in the test process, is kept.
Step 4：The volume of the air that the machine port of confirmation heat moisture exchanger is flowed out is needed for test condition selected by table 1
's.
Step 5：Gross mass m of record tank, air bag and air container0.
Step 6：Aforementioned heat moisture exchanger is changed with one for trying heat moisture exchanger, operate tester 60min ± 5min.
Step 7：Gross mass m of record tank, air bag and air container1.
Step 8：The maximum time that ongoing operation tester is recommended to heat moisture exchanger Producer.
Step 9：Gross mass m of record tank, air bag and air container2.
Step 10：Confirmation is test condition selected by table 1 for the volume of the air of the machine port outflow of examination heat moisture exchanger
Required.
Step 11：With following formula first hour of calculating for examination heat moisture exchanger moisture loss M1：
M1=(m0-m1)/V1
In formula：V1For flowing out the cumulative volume of air in first hour test process from confession examination heat moisture exchanger machine port.
Step 12：Supplying in whole test process is calculated with following formula and tries heat moisture exchanger moisture loss Mmax：
Mmax=(m0-m2)/V2
In formula：V2For flowing out the cumulative volume of air in whole test process from confession examination heat moisture exchanger machine port.
In above-mentioned method of testing, the course of work of tester is：
Step 1：Two-way airflow generator produces malleation air-flow, and malleation air-flow enters air container 3, gas in air container 3
Pressure increase, 1 shrinking die of compression bladder personification body exhalation process, gas is extruded, and the gas that air bag 1 is extruded enters through expiration pipeline 17
Enter in the water of tank 11, the gas in expiration pipeline 17 is emerged from expiration through hole 23, water in the tank 11
Heating and moistening, simulates the state of the gas of characteristics of contaminated respiratory droplets, and as the density of gas is little, which can rise to the water surface, and gas rises
To the water surface, cause the region air pressure to rise, so gas can be flowed out from exhalation vents, entrance heat moisture exchanger 6, and most
Air outlet through heat moisture exchanger 6 is discharged eventually, simulates the process of human exhaled breath.
Step 2：Two-way airflow generator produces negative-pressure air-flow, and negative-pressure air-flow enters air container 3, gas in air container 3
Pressure reduces, 1 extension module of air bag personification body breathing process, under the influence of air pressure, the dry air that dry air source is provided
Heat moisture exchanger 6 being entered, and suction line 18 being entered through heat moisture exchanger 6, under the guiding of suction line 18, dry air enters
Enter in the water of tank 11, the gas in suction line 18 is emerged from air-breathing through hole 24, water in the tank 11
Heating and moistening, simulates the state of the gas of human body suction, and as the density of gas is little, which can rise to the water surface, and gas rises
To the water surface, cause the region air pressure to rise, so gas can be flowed out from suction outlet, enter air bag 1, simulate human body
The process of air-breathing.
The step of course of work 1 and step 2 are alternately repeated to be carried out, until being completed.
In the above-mentioned course of work, with the carrying out of test, the water in tank 11 can be depleted, water in tank 11
When position declines, the float 13 declines with water surface elevation, and the inlet opening is opened, and the water of storage tank 16 is through water inlet pipe 15 and water inlet
Hole enters tank 11, so that water surface elevation rises in tank 11；Band when water surface elevation rises in tank 11
Dynamic float 13 rises, and when float 13 rises to the height contacted with 14 top surface of position-limiting cover, float 13 will be intake hole plug, stop
Water inlet.
Float 13, position-limiting cover 14, water inlet pipe 15 and storage tank 16 have cooperatively formed automatic water-replenishing device, and water storage can be maintained to hold
In device 11, waterline is stablized, and in test process, after gas enters tank 11, the air pressure in tank 11 maintains surely
Fixed state, so as to maintain stablizing for 6 admission pressure of heat moisture exchanger, improves the degree of accuracy of test result.
By test before and test after humidifier quality decrement, the damage of water in tank 11 can be reflected
Consumption, shows that the performance of keeping humidity of tested heat moisture exchanger is better.
Preferred embodiment of the present utility model is the foregoing is only, is not whole embodiments of the present utility model,
Not in order to limit this utility model, all within spirit of the present utility model and principle, any modification for being made, equivalent,
Improve etc., should be included within protection domain of the present utility model.
In addition to technical characteristic described in description, remaining technical characteristic is technology known to those skilled in the art, in order to prominent
Go out innovative characteristicses of the present utility model, above-mentioned technical characteristic will not be described here.
Claims (8)
1. pinpoint accuracy heat moisture exchanger moisture loss tester, including tank, the cover plate at tank and its place that is open
Formation is tightly connected, and it is characterized in that, the inside of the tank is provided with expiration pipeline and suction line；The expiration pipeline one
The air bag of end connection gas storage, the expiration pipeline other end are passed through in the water of tank, and described suction line one end is used for connecting heat
Wet exchanger, the suction line other end are passed through in the water of tank；Tank also respectively with exhalation vents and suction outlet
It is connected, the exhalation vents connect heat moisture exchanger, the suction outlet connects the air bag；
The inside of the tank is provided with automatic water-replenishing device, and the automatic water-replenishing device includes position-limiting cover and float, described
Position-limiting cover is fixedly mounted in tank, and cover body of the position-limiting cover for bottom end opening, float are located inside position-limiting cover and spacing
Move freely on the water surface inside cover, on position-limiting cover top surface, position corresponding with float is provided with inlet opening, and inlet opening is by water inlet
Pipe connects water source.
2. pinpoint accuracy heat moisture exchanger moisture loss tester according to claim 1, is characterized in that, the water storage holds
The inside of device is provided with the dividing plate of a longitudinal direction, and the lateral edges of the dividing plate are fixedly connected on the medial wall of tank, dividing plate
Top edge is brought into close contact with the cover plate, and the lower limb of dividing plate extends to below the water surface of tank；Arrange on the dividing plate
There are expiration through hole and air-breathing through hole, expiration through hole and air-breathing through hole to be respectively positioned on below the water surface, the expiration pipeline is connected to expiration
Through hole, the suction line are connected to air-breathing through hole.
3. pinpoint accuracy heat moisture exchanger moisture loss tester according to claim 2, is characterized in that, tank top
The portion corresponding dividing plate is respectively provided on two sides with valve chamber, and the expiration pipeline is located at the connectivity part of air bag and the suction outlet
In one valve chamber, the connectivity part and the exhalation vents of the suction line and heat moisture exchanger are located in another valve chamber；Exhale
Air pipe is provided with the first check valve for limiting that gas is flowed to expiration pipeline by air bag with the connectivity part of air bag, is provided with suction outlet
The second check valve that gas is flowed to air bag by tank is limited, suction line is provided with restriction gas with the connectivity part of heat moisture exchanger
Body is flowed to the 3rd check valve of suction line by heat moisture exchanger, is provided with restriction gas by tank flow direction heat at exhalation vents
4th check valve of Wet exchanger.
4. pinpoint accuracy heat moisture exchanger moisture loss tester according to claim 1, is characterized in that, the water storage holds
The inside of device is provided with the first temperature sensor of heating element heater and measurement water temperature, and the heating element heater extends to below the water surface, plus
The actuator of thermal element is connected with first temperature sensor.
5. pinpoint accuracy heat moisture exchanger moisture loss tester according to claim 1, is characterized in that, the air bag position
In the inside of air container, the air container is provided with passage and air bag connecting tube stretches out hole, and the passage connection is double
To flow generator.
6. pinpoint accuracy heat moisture exchanger moisture loss tester according to claim 5, is characterized in that, described water storage
Container and air container are respectively positioned in a body of thermal insulating box, and the side of the body of thermal insulating box is provided with door, remaining side of body of thermal insulating box
Closing；The side wall of the body of thermal insulating box is provided with the connection passed through for heat moisture exchanger joint and two-way airflow generator connecting tube
Hole.
7. pinpoint accuracy heat moisture exchanger moisture loss tester according to claim 6, is characterized in that, the insulated cabinet
Body is provided with the second temperature sensor of air themperature in thermal light source illumination component and detection case body, the thermal light source illumination component
Actuator is connected with the second temperature sensor.
8. pinpoint accuracy heat moisture exchanger moisture loss tester according to claim 6, is characterized in that, the water source is
The storage tank being arranged in body of thermal insulating box side wall inner surfaces, is provided with water inlet at the top of storage tank, storage tank is located at the water storage
The top of container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620856564.XU CN206020058U (en) | 2016-08-09 | 2016-08-09 | Pinpoint accuracy heat moisture exchanger moisture loss tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620856564.XU CN206020058U (en) | 2016-08-09 | 2016-08-09 | Pinpoint accuracy heat moisture exchanger moisture loss tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206020058U true CN206020058U (en) | 2017-03-15 |
Family
ID=58247211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620856564.XU Withdrawn - After Issue CN206020058U (en) | 2016-08-09 | 2016-08-09 | Pinpoint accuracy heat moisture exchanger moisture loss tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206020058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053120A (en) * | 2016-08-09 | 2016-10-26 | 山东省医疗器械产品质量检验中心 | High-accuracy heat and moisture exchanger moisture loss tester and working method thereof |
-
2016
- 2016-08-09 CN CN201620856564.XU patent/CN206020058U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053120A (en) * | 2016-08-09 | 2016-10-26 | 山东省医疗器械产品质量检验中心 | High-accuracy heat and moisture exchanger moisture loss tester and working method thereof |
| CN106053120B (en) * | 2016-08-09 | 2018-06-01 | 山东省医疗器械产品质量检验中心 | Pinpoint accuracy heat moisture exchanger moisture loss tester and its method of work |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102151385B (en) | Breath trainer | |
| CN206063664U (en) | A kind of Respiratory Medicine vital capacity training devicess | |
| CN106964045A (en) | Gas anesthesia system | |
| CN209865196U (en) | Breathe internal medicine with supplementary rehabilitation training appearance of vital capacity | |
| CN205948293U (en) | Breath training aid | |
| RU178355U1 (en) | AUTOMATED TEST COMPLEX "ARTIFICIAL LIGHT" | |
| CN206020058U (en) | Pinpoint accuracy heat moisture exchanger moisture loss tester | |
| CN205163962U (en) | Breathe protection equipment combined test stand | |
| CN204798746U (en) | Breathe training ware | |
| CN106053120B (en) | Pinpoint accuracy heat moisture exchanger moisture loss tester and its method of work | |
| CN211068953U (en) | Device for exercising respiratory function | |
| CN206228722U (en) | The sinusoidal feeder and high emulation HME moisture loss testers of variable throughput | |
| CN201775853U (en) | Artificial nose | |
| CN106075684B (en) | Sinusoidal feeder and high emulation HME the moisture loss testers of variable throughput | |
| CN207253664U (en) | A kind of medical respiration training | |
| CN103356196A (en) | Experiment device for measuring real human body upper respiratory tract model flow field pressure | |
| CN205885939U (en) | Air supply pipe opens oxygen inhalation mask that patient used | |
| CN204798542U (en) | Breathe respirator for internal medicine | |
| CN113730881A (en) | A lung exhales trainer for cardiothoracic surgery patient | |
| CN202920185U (en) | Breath heat-measuring apparatus of livestock open-type mask | |
| CN208823700U (en) | A kind of warming humidification storage oxygen mask | |
| CN203524676U (en) | Measurement and experiment device for pressure in real human body upper respiratory tract model flow field | |
| CN206822615U (en) | Medical aid | |
| CN103115644B (en) | The pick-up unit of bag respirator critical performance parameters and detection method | |
| CN219662563U (en) | Neonate breathing machine pipeline insulation cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170315 Effective date of abandoning: 20180601 |