CN106843337A - Intensification humidification control system and its control method of constant temperature humidity chamber - Google Patents
Intensification humidification control system and its control method of constant temperature humidity chamber Download PDFInfo
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- CN106843337A CN106843337A CN201710173125.8A CN201710173125A CN106843337A CN 106843337 A CN106843337 A CN 106843337A CN 201710173125 A CN201710173125 A CN 201710173125A CN 106843337 A CN106843337 A CN 106843337A
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- constant temperature
- humidity chamber
- temperature humidity
- humidification
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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Abstract
A kind of intensification the invention discloses constant temperature humidity chamber humidifies control system and its control method, the system includes constant temperature humidity chamber, humidification water tank and controller, the inside of constant temperature humidity chamber is provided with stirring blower fan, chamber heater, humidity sensor, temperature sensor and chamber evaporator, the inside for humidifying water tank is provided with water temperature heating and cooling-water temperature sensor, and the inside for humidifying water tank is connected by jet chimney with the inside of constant temperature humidity chamber.The present invention can solve the problem that the problem of humidification response lag, rise wet incipient stage humidity overshoot deviation larger problem and the unstable problem of low temperature humidity step humidity control, it is ensured that the reliability of test data.
Description
Technical field
It is to be related to a kind of liter of constant temperature humidity chamber more specifically the present invention relates to test chamber apparatus technical field
Temperature humidification control system and its control method.
Background technology
Constant temperature humidity chamber is that a kind of performance in the state of a certain constant temperature and humidity to product is detected, to detect
The equipment whether performance of the product reaches the requirement of relevant criterion.
During experiment, in order to reach default humiture, constant temperature humidity chamber needs to set corresponding temperature
Adjusting means and humidity control apparatus carry out the regulation of epidemic disaster.However, existing constant temperature humidity chamber exist it is following not
Foot：When the 1st, rising to high temperature moisture phase from low temperature moisture phase, if wet operations start suddenly, humidification response can produce stagnant
Afterwards, it is impossible to make the humidity in constant temperature humidity chamber quick and stably reach default test requirements document；2nd, in low temperature moisture phase
When, humidification amount is small needed for set humidity, and under humidifier normal regulating state, moisture conveying capacity is big, and control does not cause finely
Control is unstable.3rd, in the incipient stage of liter high humility, because equipment designs unreasonable, a large amount of steam are had and enters constant temperature and humidity
In chamber, the humidity fluctuation in case is caused, generate humidity overshoot and deviate larger problem, have impact on test data
Reliability.
The content of the invention
It is an object of the invention to overcome drawbacks described above of the prior art, there is provided a kind of intensification of constant temperature humidity chamber
Humidification control system and its control method, it can solve the problems, such as humidification response lag, rise wet incipient stage humidity overshoot deviation
Larger problem and low temperature humidity step humidity control unstable problem.
To achieve the above object, the first aspect of the present invention provides a kind of intensification humidification control of constant temperature humidity chamber
System, including constant temperature humidity chamber for product test, the humidification water tank that is arranged on outside constant temperature humidity chamber and
For control constant temperature humidity chamber and humidification water tank in all parts action controller, the constant temperature humidity chamber it is interior
Portion is provided with stirring blower fan, chamber heater, humidity sensor, the temperature sensor and for making being electrically connected with the controller respectively
Cold and dehumidifying chamber evaporator, the inside of the humidification water tank be provided with the water temperature heating that is electrically connected with the controller respectively and
Cooling-water temperature sensor, the inside of the humidification water tank is connected by main steam line with the inside of constant temperature humidity chamber.
Used as preferred, the inside of the humidification water tank is additionally provided with the precipitation temperature device being electrically connected with the controller.
Used as preferred, the precipitation temperature device includes precipitation temperature evaporator, radiator or electronic refrigerator.
Used as preferred, the periphery of the constant temperature humidity chamber is provided with heat-insulation layer.
Used as preferred, the steam end that goes out that the main steam line stretches into inside constant temperature humidity chamber is connected with for protecting
The equal stringing of steam of the uniformity of humidity in card constant temperature humidity chamber.
As preferred, the first switch valve being electrically connected with the controller is connected with the main steam line.
As preferred, auxiliary steam pipeline is additionally provided with the humidification water tank, the caliber of the auxiliary steam pipeline is small
In the caliber of main steam line, one end of the auxiliary steam pipeline is connected with the inside of humidification water tank, the auxiliary steam
The other end of pipeline be connected to main steam line go out steam end or be connected directly between on constant temperature humidity chamber and with its in
Portion is connected, and the second switch valve being electrically connected with the controller is connected with the auxiliary steam pipeline.
The second aspect of the present invention provides a kind of intensification humidifying controlling method of constant temperature humidity chamber, the method Ying Yu
In the intensification humidification control system of the constant temperature humidity chamber described in above-mentioned technical proposal, comprise the following steps：
Step one, when constant temperature humidity chamber carries out low temperature humid test to test product, control constant temperature and moisture test
The temperature inside the box stabilization of case is in the first preset temperature value, while making relatively low temperature of the water temperature control of humidification water tank at 20 DEG C~80 DEG C
In the range of, and by controlling the on and off of the second switch valve on auxiliary steam pipeline, make in the case of constant temperature humidity chamber
Moisture stable；
Step 2, constant temperature humidity chamber from the first preset temperature value it is elevated to the second preset temperature value during,
The water temperature of control humidification water tank is stepped up, and by controlling the on and off of second switch valve and/or first switch valve, makes
Moisture stable in the case of constant temperature humidity chamber；
Step 3, needed greatly before moisture in constant temperature humidity chamber, the water temperature in control humidification water tank, makes water temperature in advance
Gradually risen to close to fluidized state, to complete the preparation in advance of a large amount of wet operations from compared with low temperature；
Step 4, when constant temperature humidity chamber needs greatly moisture, open first switch valve or open the simultaneously
One controlled valve and second switch valve, allow the steam humidified in water tank to enter into constant temperature quickly through corresponding jet chimney permanent
In wet test case, now controller control water temperature heating action, to realize automatically controlling for humidification amount.
Used as preferred, the water temperature value close to fluidized state is more than or equal to 80 DEG C and less than fluidizing point.
Used as preferred, in whole control process, controller is tried by the constant temperature and humidity that pid control mode will be collected
The water temperature of the temperature inside the box, humidity and humidification water tank of tryoff is calculated with each self-corresponding setting value respectively, and output control adds
Heat, humidification amount and refrigerating capacity, and control heating amount, humidification amount and refrigerating capacity that PID is calculated changed, to perform
Corresponding control operation.
Compared with prior art, the beneficial effects of the present invention are：
The present invention rises to high temperature moisture phase and needs greatly moisture in constant temperature humidity chamber from low temperature moisture phase
Before, controller can in advance control the water temperature humidified in water tank to gradually rise to close to fluidized state, to complete wet operations
Preparation in advance, when the tropicalization test stage is carried out, humidification water tank in steam can enter quickly through jet chimney
To in constant temperature humidity chamber, humidity in the case of constant temperature humidity chamber is set to rapidly increase to the humidity for meeting test requirements document
Value, solves the problems, such as to humidify response lag, while rising the wet incipient stage, the water in humidification water tank does not seethe with excitement also, opens
A large amount of steam are not had during controlled valve to enter in constant temperature humidity chamber, it is to avoid cause the humidity fluctuation in case, solved
Deviate larger problem wet incipient stage humidity overshoot is risen, it is ensured that the reliability of test data.
Additionally, in low temperature moisture phase, the less auxiliary steam pipeline conveying steam of caliber may be selected, so add required
Moisture conveying capacity is easily controlled when moisture is smaller, makes humid control stabilization.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of the intensification humidification control system of the constant temperature humidity chamber that the present invention is provided；
Fig. 2 is the electric operation control circuit figure of the intensification humidification control system of the constant temperature humidity chamber that the present invention is provided.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is refer to, the intensification The embodiment provides a kind of constant temperature humidity chamber humidifies control system, should
System include constant temperature humidity chamber 1 for product test, the humidification water tank 2 that is arranged on outside constant temperature humidity chamber 1 with
And for controlling the controller 3 of all parts action in constant temperature humidity chamber 1 and humidification water tank 2, below in conjunction with accompanying drawing pair
Each part of the present embodiment is described in detail.
The inside of constant temperature humidity chamber 1 is provided with stirring blower fan 4, chamber heater 5, humidity sensor 6, TEMP
Device 7 and the chamber evaporator 8 for freezing and dehumidifying, the periphery of constant temperature humidity chamber 1 is provided with heat-insulation layer 15.
The inside for humidifying water tank 2 is provided with water temperature heating 9 and cooling-water temperature sensor 10, and the inside for humidifying water tank 2 can pass through
Main steam line 11 is connected with the inside of constant temperature humidity chamber 1, and first switch valve 12 is connected with main steam line 11.
For the ease of the water temperature of regulation humidification water tank, the inside for humidifying water tank 2 is also provided with precipitation temperature device 13.At this
In embodiment, precipitation temperature device 13 can preferably use precipitation temperature evaporator, radiator or electronic refrigerator.
Preferably, the steam end that goes out that main steam line 11 stretches into inside constant temperature humidity chamber 1 is connected with for ensureing perseverance
The equal stringing 14 of the steam of the uniformity of humidity in steady temperature damp test case 1.
As shown in Fig. 2 controller 3 can be passed with stirring blower fan 4, chamber heater 5, humidity sensor 6, temperature respectively
Sensor 7, chamber evaporator 8, water temperature heating 9, cooling-water temperature sensor 10, first switch valve 12 and precipitation temperature device 13 are electrically connected
Connect.
Additionally, the system is also provided with auxiliary steam pipeline 16 and the second switch valve 17 electrically connected with controller 3,
The caliber of auxiliary steam pipeline 16 is less than main steam line 11, one end of auxiliary steam pipeline 16 and the inside phase of humidification water tank 2
Connection, the other end of auxiliary steam pipeline 16 is connected to going out steam end or being connected directly between constant temperature and humidity for main steam line 11
It is connected in chamber 1 and with inside it, second switch valve 17 is connected on auxiliary steam pipeline 16.In practical operation,
Main steam line 11 can be used for the steam circulation in tropicalization test stage, and auxiliary steam pipeline 16 can be used for low temperature humid test
The steam circulation in stage, naturally it is also possible to which the steam for being used for the tropicalization test stage together with main steam line 11 circulates.
During work, controller 3 can Control experiment case evaporator 8 freezes and dehumidifies, the dynamic of Control experiment case heater 5 adds
The dynamic heat of water temperature heating 9 produces steam to enter during heat makes constant temperature humidity chamber 1 reach required temperature and control humidification water tank 2
Enter in constant temperature humidity chamber 1, humidity in constant temperature humidity chamber 1 is reached required humidity；Controller 3 can also pass through simultaneously
Controlled valve control steam enters the size of constant temperature humidity chamber 1.
Embodiments of the invention additionally provide a kind of intensification humidifying controlling method of constant temperature humidity chamber, the method Ying Yu
In the intensification humidification control system of constant temperature humidity chamber, comprise the following steps：
Step one, when constant temperature humidity chamber 1 carries out low temperature humid test to test product, control constant temperature and moisture test
The temperature inside the box stabilization of case 1 in the first preset temperature value, while make humidification water tank 2 water temperature control it is relatively low at 20 DEG C~80 DEG C
In warm scope, and by controlling the on and off of the second switch valve 17 on auxiliary steam pipeline 16, make constant temperature humidity chamber 1
Case in moisture stable；
Step 2, constant temperature humidity chamber 1 from the first preset temperature value it is elevated to the second preset temperature value during,
The water temperature of control humidification water tank 2 is stepped up, and by control second switch valve 17 and/or first switch valve 12 open and
Close, make moisture stable in the case of constant temperature humidity chamber 1；Wherein, the process that water temperature gradually rises is also the humidification of next stage
Preliminary procedure；
Step 3, before constant temperature humidity chamber 1 needs greatly moisture, in advance control humidification water tank 2 in water temperature, make water
Temperature is gradually risen to close to fluidized state, to complete the preparation in advance of a large amount of wet operations from compared with low temperature；
Step 4, when constant temperature humidity chamber 1 needs greatly moisture, open first switch valve 12 or open simultaneously
First switch valve 12 and second switch valve 17, allow the steam humidified in water tank 2 to enter quickly through corresponding jet chimney
To in constant temperature humidity chamber 1, the now control of controller 3 water temperature heating 9 is acted, to realize automatically controlling for humidification amount.
In the present embodiment, the water temperature value close to fluidized state can be more than or equal to 80 DEG C and less than fluidizing point.
In whole control process, the constant temperature humidity chamber 1 that controller 3 be able to will be collected by pid control mode
The temperature inside the box, humidity and humidification water tank 2 water temperature calculated with each self-corresponding setting value respectively, output control heating
Amount, humidification amount and refrigerating capacity, and control heating amount, humidification amount and refrigerating capacity that PID is calculated are changed, to perform phase
The control operation answered.
To be described in detail with a concrete instance below.
When constant temperature humidity chamber carries out -35 DEG C of low temperature humid test to test product, constant temperature and moisture test is controlled
Humidity keeps 30Rh% constant in the case of case；
During the temperature inside the box of constant temperature humidity chamber gradually rises to 50 DEG C from -35 DEG C, control in advance is humidified
Water temperature in water tank is stepped up, and water temperature is gradually risen to 95 DEG C, to complete the preparation in advance of a large amount of wet operations；
When the temperature inside the box of constant temperature humidity chamber is just 50 DEG C and needs greatly moisture, first switch valve is opened
Door, the steam humidified in water tank can be entered into constant temperature humidity chamber quickly through the first jet chimney, so that permanent
Humidity can rapidly increase to 80Rh% from 30Rh% in the case of steady temperature damp test case.
In sum, the present invention rises to high temperature moisture phase and needs in constant temperature humidity chamber from low temperature moisture phase
Greatly before moisture, controller can in advance control the water temperature humidified in water tank to gradually rise to close to fluidized state, to complete
The preparation in advance of wet operations, when the tropicalization test stage is carried out, the steam in humidification water tank can be quickly through steam
Pipeline is entered into constant temperature humidity chamber, and humidity in the case of constant temperature humidity chamber is rapidly increased to satisfaction experiment will
The humidity value asked, solves the problems, such as to humidify response lag, while rising the wet incipient stage, the water in humidification water tank does not boil also
Rise, do not have a large amount of steam when opening controlled valve and enter in constant temperature humidity chamber, it is to avoid cause the high humidity amplitude wave in case
It is dynamic, solve the problems, such as to deviate larger in the wet incipient stage humidity overshoot of liter, it is ensured that the reliability of test data.Additionally,
Low temperature moisture phase, may be selected the less auxiliary steam pipeline conveying steam of caliber, so easy when required humidification amount is smaller
Control moisture conveying capacity, makes humid control stabilization.
Above-described embodiment is the present invention preferably implementation method, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (9)
1. the intensification of a kind of constant temperature humidity chamber humidifies control system, it is characterised in that including the constant temperature for product test
Constant moisture test case (1), it is arranged on the outside humidification water tank (2) of constant temperature humidity chamber (1) and for controlling constant temperature and humidity to try
Tryoff (1) and the controller (3) of the interior all parts action of humidification water tank (2), the inside of the constant temperature humidity chamber (1) is provided with
Stirring blower fan (4), chamber heater (5), humidity sensor (6), the temperature sensor for being electrically connected with controller (3) respectively
(7) the chamber evaporator (8) and for freezing and dehumidifying, it is described humidification water tank (2) inside be provided with respectively with controller (3)
The water temperature heating (9) and cooling-water temperature sensor (10) of electrical connection, the inside of humidification water tank (2) pass through main steam line (11)
Inside with constant temperature humidity chamber (1) is connected.
2. the intensification of constant temperature humidity chamber according to claim 1 humidifies control system, it is characterised in that the humidification
The inside of water tank (2) is additionally provided with precipitation temperature device (13) electrically connected with controller (3).
3. the intensification of constant temperature humidity chamber according to claim 2 humidifies control system, it is characterised in that the precipitation
Warm device (13) includes precipitation temperature evaporator, radiator or electronic refrigerator.
4. the intensification of constant temperature humidity chamber according to claim 1 humidifies control system, it is characterised in that the main steaming
Stretch into the internal steam end that goes out of constant temperature humidity chamber (1) and be connected with for ensureing constant temperature humidity chamber (1) in steam pipe road (11)
The equal stringing of the steam (14) of the uniformity of interior humidity.
5. the intensification of the constant temperature humidity chamber according to any one in Claims 1 to 4 humidifies control system, its feature
It is that the first switch valve (12) electrically connected with controller (3) is connected with the main steam line (11).
6. the intensification of constant temperature humidity chamber according to claim 5 humidifies control system, it is characterised in that the humidification
Auxiliary steam pipeline (16) is additionally provided with water tank (2), the caliber of the auxiliary steam pipeline (16) is less than main steam line (11)
Caliber, one end of the auxiliary steam pipeline (16) is connected with the inside of humidification water tank (2), the auxiliary steam pipeline
(16) the other end is connected to going out steam end or being connected directly between on constant temperature humidity chamber (1) simultaneously for main steam line (11)
It is connected with inside it, the second switch valve electrically connected with controller (3) is connected with the auxiliary steam pipeline (16)
(17)。
7. the intensification humidifying controlling method of a kind of constant temperature humidity chamber, it is characterised in that the method should be in described in claim 6
Constant temperature humidity chamber intensification humidification control system in, comprise the following steps：
Step one, when constant temperature humidity chamber (1) carries out low temperature humid test to test product, control constant temperature humidity chamber
(1) the temperature inside the box stabilization in the first preset temperature value, while make humidification water tank (2) water temperature control 20 DEG C~80 DEG C compared with
In low temperature range, and by controlling the on and off of the second switch valve (17) on auxiliary steam pipeline (16), make constant temperature and humidity
Moisture stable in the case of chamber (1)；
Step 2, constant temperature humidity chamber (1) from the first preset temperature value it is elevated to the second preset temperature value during, control
The water temperature of system humidification water tank (2) is stepped up, and by controlling second switch valve (17) and/or first switch valve (12)
On and off, makes moisture stable in the case of constant temperature humidity chamber (1)；
Step 3, needed greatly before moisture in constant temperature humidity chamber (1), the water temperature in control humidification water tank (2), makes water in advance
Temperature is gradually risen to close to fluidized state, to complete the preparation in advance of a large amount of wet operations from compared with low temperature；
Step 4, when constant temperature humidity chamber (1) needs greatly moisture, open first switch valve and (12) or open simultaneously
First switch valve (12) and second switch valve (17), allow the steam humidified in water tank (2) quickly through corresponding steam pipe
Road is entered into constant temperature humidity chamber (1), and now controller (3) controls water temperature heating (9) action, to realize humidification amount
Automatically control.
8. the intensification humidifying controlling method of constant temperature humidity chamber according to claim 7, it is characterised in that described close
The water temperature value of fluidized state is more than or equal to 80 DEG C and less than fluidizing point.
9. the intensification humidifying controlling method of constant temperature humidity chamber according to claim 7, it is characterised in that entirely controlling
During system, the temperature inside the box of the constant temperature humidity chamber (1) that controller (3) will be collected by pid control mode, humidity and
The water temperature of humidification water tank (2) is calculated with each self-corresponding setting value respectively, output control heating amount, humidification amount and refrigeration
Measure, and control heating amount, humidification amount and refrigerating capacity that PID is calculated are changed, to perform corresponding control operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173125.8A CN106843337B (en) | 2017-03-22 | 2017-03-22 | Temperature rise and humidification control system of constant temperature and humidity test box and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173125.8A CN106843337B (en) | 2017-03-22 | 2017-03-22 | Temperature rise and humidification control system of constant temperature and humidity test box and control method thereof |
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| CN106843337A true CN106843337A (en) | 2017-06-13 |
| CN106843337B CN106843337B (en) | 2021-07-06 |
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Cited By (5)
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| CN110058623A (en) * | 2017-12-27 | 2019-07-26 | 发那科株式会社 | The control device of equipment |
| CN111765917A (en) * | 2020-07-08 | 2020-10-13 | 重庆盖博试验设备有限公司 | Long-range air supply temperature humidity experimental box |
| CN112240865A (en) * | 2019-07-19 | 2021-01-19 | 上海沃尔沃汽车研发有限公司 | Corrosion test equipment and method for large-scale system-level parts for vehicle |
| CN117074286A (en) * | 2023-09-11 | 2023-11-17 | 广东科明环境仪器工业有限公司 | Method for achieving humidity-heat balance of test box by adopting low-temperature steam and environment test box |
| CN117943139A (en) * | 2024-03-27 | 2024-04-30 | 成都中冷低温科技有限公司 | Constant temperature and humidity pressure container and temperature and humidity control method thereof |
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| CN117074286A (en) * | 2023-09-11 | 2023-11-17 | 广东科明环境仪器工业有限公司 | Method for achieving humidity-heat balance of test box by adopting low-temperature steam and environment test box |
| CN117943139A (en) * | 2024-03-27 | 2024-04-30 | 成都中冷低温科技有限公司 | Constant temperature and humidity pressure container and temperature and humidity control method thereof |
| CN117943139B (en) * | 2024-03-27 | 2024-06-14 | 成都中冷低温科技有限公司 | Constant temperature and humidity pressure container and temperature and humidity control method thereof |
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| CN106843337B (en) | 2021-07-06 |
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