CN207262597U - Defrost dehumidified environment system in a kind of high/low temperature laboratory - Google Patents
Defrost dehumidified environment system in a kind of high/low temperature laboratory Download PDFInfo
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- CN207262597U CN207262597U CN201721108037.1U CN201721108037U CN207262597U CN 207262597 U CN207262597 U CN 207262597U CN 201721108037 U CN201721108037 U CN 201721108037U CN 207262597 U CN207262597 U CN 207262597U
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Abstract
The utility model discloses a kind of high/low temperature laboratory defrosting dehumidified environment system.Including：It is arranged at the indoor refrigeration air-cooler device of experiment and insulation sealed door；Compressed air supply system, low-grade fever sorption drying device outside laboratory, arranged on laboratory internal and exterior inlet duct, the exhaust apparatus on the exhaust outlet of laboratory；Arranged on laboratory internal and exterior measuring device；The outlet of compressed air supply system is connected with the entrance of low-grade fever sorption drying device；The outlet of low-grade fever sorption drying device is connected with the entrance of inlet duct；The outlet of inlet duct is connected with the air inlet in laboratory；Inlet duct, exhaust apparatus and measuring device are electrically connected with the control device outside laboratory.The system can well ensure that high/low temperature laboratory system is simpler, stable, it is main can be energy-saving, reduce refrigeration cold investment of equipment, save energy consumption at least more than 40%.
Description
Technical field
It the utility model is related to laboratory environment system, more particularly to a kind of high/low temperature laboratory defrosting dehumidified environment system
System.
Background technology
High/low temperature laboratory is the scientific research developments such as recent space flight, navigation, military project, new energy, tests under high and low temperature state and produces
The necessary requirement of product material property.During the high/low temperature laboratory of early stage, particularly low temperature test, all using liquid nitrogen come for laboratory
Environment provides low temperature, but liquid nitrogen accurate temperature controlling is more difficult, and temperature fluctuation is big (± 5 DEG C), with ultra low temperature overlapping formula freezing unit
Promote the use, experimental situation uses cascade refrigeration temperature control technique substantially in -40~-70 DEG C of laboratory, and temperature fluctuation is about
±2℃.But during low temperature test, during cooling, air is shunk, negative pressure in laboratory, by door and window or other gaps,
Under the action of negative pressure atmospheric pressure, extraneous humid air constantly pours in, and causes refrigeration air cooler evaporator to be frozen, frequently enters
Defrosting deicing condition, effectively causes experiment Interior Temperature Environment fluctuation, more very refrigeration cold system crash；Laboratory experiment sample,
The a piece of vast expanse of whiteness of instrument, is covered by white snow, can not observe.
It is well known that due to air cooler evaporator in ice-melt defrosting process, it is necessary to which electrical heating or hot fluorine heat supply, both need to disappear
A large amount of electric energy are consumed, while produce ice-melt heat again, to keep the stabilization of experiment indoor environment temperature, it is necessary to which other freezing units carry
For the refrigerating capacity of corresponding counteracting, so the capacity that freezing refrigeration unit is equipped with needs 1.4 times of normal cooling load.
When indoor relative humidity (moisture) cannot be processed and control, the ice-melt defrosting of freezing unit will repeatedly, temperature
Also will fluctuation therewith.High/low temperature laboratory environment stabilization and the energy saving unification of auxiliary facility are how improved, is numerous phases
The thing that the Lab workers and scientific research scholar of pass are paying close attention to and exploring always.
Utility model content
In view of this, the utility model embodiment provides a kind of high/low temperature laboratory defrosting dehumidified environment system, including
It is arranged at the indoor refrigeration air-cooler device of experiment and insulation sealed door；The system comprises：
Compressed air supply system outside laboratory, it is used to meet pressure for offer in laboratory and temperature will
The compressed air asked；
Low-grade fever sorption drying device outside laboratory, it is used for the compression for meeting pressure and temperature requirement
Air is dried to meet the compressed air of humidity requirement for offer in the laboratory；
Arranged on laboratory internal and exterior inlet duct, for meeting humidity requirement described in the conveying into the laboratory
Compressed air；
Exhaust apparatus on the exhaust outlet of laboratory, is not inconsistent described in resultant pressure, temperature or humidity requirement for discharging
Test indoor gas；
Arranged on laboratory internal and exterior measuring device, for detecting air pressure or humidity；
The outlet of the compressed air supply system is connected with the entrance of the low-grade fever sorption drying device；
The outlet of the low-grade fever sorption drying device is connected with the entrance of the inlet duct；
The outlet of the inlet duct is connected with the air inlet in the laboratory；
The inlet duct, the exhaust apparatus and the measuring device are filled with the control outside laboratory
Put electrical connection.
Preferably, it is equipped with successively on admission line between the outlet of the inlet duct and laboratory air inlet opposite
Humidity sensor, pneumatic air bleeding valve, eliminate the unusual smell filter and pneumatic control valve；The admission line through the air inlet into
After entering in laboratory, the admission line is equipped with noise reduction outlet equipment.
Preferably, the exhaust apparatus includes：Uniaxial pressure window for keeping pressure balance on the wall of laboratory and arranged on laboratory
Exhaust equipment in exhaust outlet, the quantity of the uniaxial pressure window for keeping pressure balance is 2, and the quantity of the exhaust equipment is 2.
Preferably, the measuring device includes relative humidity sensor and differential pressure pickup；The relative humidity sensing
Device is arranged on outside laboratory, for detecting the rh value of low-grade fever sorption drying device outlet compressed air；The pressure difference
Sensor is arranged in laboratory, for detecting the laboratory internal pressure difference value.
Preferably, the control device is programmable logic controller (PLC).
Preferably, the pressure of the compressed air of the compressed air supply system outlet is 8bar, temperature is -10 DEG C.
Preferably, the pressure upper limit of the uniaxial pressure window for keeping pressure balance exhaust pressure relief is positive pressure 30Pa.
Preferably, the outlet of the compressed air supply system is adsorbed by drying by compressed-air line and the low-grade fever
The entrance connection of device.
By above-mentioned technical proposal, the beneficial effects of the utility model are,
The high/low temperature laboratory defrosting dehumidification system of the utility model makes compressed air after drying system is handled, and produces
Low dew point dry air, replaces high/low temperature Laboratory Air with low dew point (- 40~-70 DEG C) dry air, coordinates laboratory
The having directional exhaust system of interior setting, is controlled by centralized-control center (PLC), monitoring room air displacement；After the completion of displacement,
Control centre persistently controls, and keeps micro-positive pressure in laboratory, prevents moist outdoor air from entering, so as to keep experiment Indoor Dry
It is dry.The system can ensure that high/low temperature laboratory system is simpler well, and operational excellence is stablized, and overcomes above-mentioned drawback,
It is main can be energy-saving, reduce refrigeration cold investment of equipment, save energy consumption at least more than 40%.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, and can be practiced according to the content of specification, with the preferred embodiment of the utility model and coordinate attached drawing specifically below
It is bright as after.
Brief description of the drawings
Fig. 1 is the high/low temperature laboratory defrosting dehumidified environment System planes schematic diagram that the utility model embodiment provides.
Reference numeral：
1. compressed air supply system, 2. low-grade fever sorption drying devices, 3. inlet ducts, 31. relative humidity sensors,
Eliminate the unusual smell filter 32. pneumatic air bleeding valve, 33., 34. pneumatic control valves, 35. noise reduction outlet equipment, 4. exhaust apparatus, 41. is single
To pressure balance window, 42,5. measuring device of exhaust equipment, 51. differential pressure pickups, 6. control devices, 7. refrigeration air-cooler devices,
8. keep the temperature sealed door.
Embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken,
Below in conjunction with attached drawing and preferred embodiment, to embodiment, structure, feature and its work(according to the present utility model application
Effect, describes in detail as after.The following examples illustrate the utility model, but is not intended to limit the scope of the present invention, and one
Or special characteristic, structure or the feature in multiple embodiments can be combined by any suitable form.
Embodiment 1
As shown in Figure 1, a kind of high/low temperature laboratory defrosting dehumidified environment system, including to be arranged at the indoor refrigeration of experiment cold
Blower fan apparatus 7 and insulation sealed door 8；Said system includes：Compressed air supply system 1 outside laboratory, it is used for
Meet pressure and the compressed air of temperature requirement to be provided in laboratory；Low-grade fever sorption drying device 2 outside laboratory,
It is used to the above-mentioned compressed air for meeting pressure and temperature requirement be dried to meet humidity to provide in above-mentioned laboratory
It is required that compressed air；Arranged on laboratory internal and exterior inlet duct 3, for conveying above-mentioned meet into above-mentioned laboratory
The compressed air of humidity requirement；Exhaust apparatus 4 on the exhaust outlet of laboratory, is not inconsistent resultant pressure, temperature or wet for discharging
Spend the desired indoor gas of above-mentioned experiment；Arranged on laboratory internal and exterior measuring device 5, for detect air pressure or
Humidity；The outlet of above-mentioned compressed air supply system 1 is connected with the entrance of above-mentioned low-grade fever sorption drying device 2；Above-mentioned low-grade fever is inhaled
The outlet of attached drying device 2 is connected with the entrance of above-mentioned inlet duct 3；The outlet of above-mentioned inlet duct 3 and above-mentioned laboratory
Air inlet connects；Above-mentioned inlet duct 3, above-mentioned exhaust apparatus 4 and above-mentioned measuring device 5 with it is above-mentioned outside laboratory
Control device 6 is electrically connected.
As the preferred of above-described embodiment, the admission line between the outlet of above-mentioned inlet duct 3 and laboratory air inlet
On successively be equipped with relative humidity sensor 31, pneumatic air bleeding valve 32, eliminate the unusual smell filter 33 and pneumatic control valve 34；It is above-mentioned into
After gas pipeline enters in laboratory through above-mentioned air inlet, above-mentioned admission line is equipped with noise reduction outlet equipment 35.
As the preferred of above-described embodiment, above-mentioned exhaust apparatus 4 includes：Uniaxial pressure window for keeping pressure balance on the wall of laboratory
41 and the exhaust equipment 42 in the exhaust outlet of laboratory, the quantity of above-mentioned uniaxial pressure window for keeping pressure balance is 2, above-mentioned exhaust equipment
Quantity be 2.
As the preferred of above-described embodiment, above-mentioned measuring device 5 includes relative humidity sensor 31 and differential pressure pickup 52；
Above-mentioned relative humidity sensor 11 is arranged on outside laboratory, for detecting the phase of above-mentioned low-grade fever sorption drying device outlet compressed air
To humidity value；Above-mentioned differential pressure pickup 51 is arranged in laboratory, for detecting above-mentioned laboratory internal pressure difference value.
As the preferred of above-described embodiment, above-mentioned control device 6 is programmable logic controller (PLC).
As the preferred of above-described embodiment, the pressure of the compressed air of above-mentioned compressed air supply system outlet is 8bar,
Temperature is -10 DEG C.
As the preferred of above-described embodiment, the pressure upper limit of above-mentioned 41 exhaust pressure relief of uniaxial pressure window for keeping pressure balance is positive pressure
30Pa。
As the preferred of above-described embodiment, the outlet of the compressed air supply system 1 passes through compressed-air line and institute
State the entrance connection of low-grade fever sorption drying device 2.
The high/low temperature laboratory defrosting dehumidified environment System Working Principle of the utility model is as follows：
The first step：Laboratory keeps the temperature sealed door 8 and its attached door and window Close All, and seals.Supplied by complete compressed air
1 offer that should stand meets the 8bar of fundamental importance, and the compressed air of -10 DEG C of dew-point temperature standard, by compressed-air line, connects
Enter microthermal adsorption drier 2, the real-time humidity data fed back by PLC Centralized Controllers by RH humidity sensors, monitors low-grade fever
The humidity data (dew-point temperature) of adsorptive drier outlet, when humidity data is not reaching to requirements, pneumatic air bleeding valve (by
Control) 32 unlatchings, the closing of pneumatic control valve (controlled) 34, discharges underproof dew point air.
Second step：When real-time humidity data (dew-point temperature) air of RH humidity sensors feedback reaches requirements, gas
Dynamic air bleeding valve (controlled) 32 is closed, and pneumatic control valve (controlled) 34, controlled exhaust equipment 42 are opened, gone out by muffling device 35
Laboratory is sent into gas port noise reduction, and room air enters air displacement state, and controlled PLC Centralized Controllers setting timing ventilation (is changed
Gas number/flow)；Reach setting time of exchanging gas, pneumatic control valve (controlled) 34, controlled exhaust equipment 42 are closed, and supply is used
Property and compressed air expansion effect, be in barotropic state in laboratory, when more than 30Pa pressure, put down by uniaxial pressure
Weighing apparatus window 41+30Pa is outwards vented release, maintains indoor micro-positive pressure balance.
3rd step：Test intraventricular pressure gap sensor feedback PLC Centralized Controllers, (10 points of setting after micro-positive pressure+10Pa stablizes
Clock)；Then PLC Centralized Controllers issue instructions to refrigeration cooling fan system, and the intelligentized control method center of the system starts refrigeration
System, is laboratory refrigeration cool-down；Laboratory Air contracts last during cooling, feeds back to PLC collection by differential pressure pickup detection
Middle controller, PLC Centralized Controllers control the open degree of pneumatic control valve according to pressure differential resetting controlling value, there is provided keep room
The air of the low dew point (- 40~-70 DEG C) of interior micro-positive pressure, maintains indoor micro-positive pressure, can ensure air-cooler system of freezing very well
Unite the efficient operation of 7 stabilizing energy-savings, so that it is guaranteed that high/low temperature laboratory is smoothly carried out the work.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, can be to this
The technical solution technical scheme is modified or replaced equivalently of utility model, without departing from the objective and model of technical solutions of the utility model
Enclose, it should all cover the right in the utility model.
Claims (8)
- The dehumidified environment system 1. a kind of high/low temperature laboratory is defrosted, including it is arranged at the indoor refrigeration air-cooler device of experiment and guarantor Warm sealed door；It is characterized in that, the system comprises：Compressed air supply system outside laboratory, it is used to meet pressure and temperature requirement to provide in laboratory Compressed air；Low-grade fever sorption drying device outside laboratory, it is used to meet pressure and the compressed air of temperature requirement to described It is dried to meet the compressed air of humidity requirement for offer in the laboratory；Arranged on laboratory internal and exterior inlet duct, for meeting the pressure of humidity requirement described in the conveying into the laboratory Contracting air；Exhaust apparatus on the exhaust outlet of laboratory, the experiment of resultant pressure, temperature or humidity requirement is not inconsistent for discharging Indoor gas；Arranged on laboratory internal and exterior measuring device, for detecting air pressure or humidity；The outlet of the compressed air supply system is connected with the entrance of the low-grade fever sorption drying device；The outlet of the low-grade fever sorption drying device is connected with the entrance of the inlet duct；The outlet of the inlet duct is connected with the air inlet in the laboratory；The inlet duct, the exhaust apparatus and the measuring device are electrically connected with the control device outside laboratory Connect.
- A kind of 2. high/low temperature laboratory defrosting dehumidified environment system according to claim 1, it is characterised in that the air inlet Relative humidity sensor, pneumatic air bleeding valve are equipped with admission line between the outlet of device and laboratory air inlet successively, is removed Odor filter and pneumatic control valve；After the admission line enters in laboratory through the air inlet, the air inlet pipe Line is equipped with noise reduction outlet equipment.
- A kind of 3. high/low temperature laboratory defrosting dehumidified environment system according to claim 1, it is characterised in that the exhaust Device includes：Uniaxial pressure window for keeping pressure balance on the wall of laboratory and the exhaust equipment in the exhaust outlet of laboratory, the list It it is 2 to the quantity of pressure balance window, the quantity of the exhaust equipment is 2.
- A kind of 4. high/low temperature laboratory defrosting dehumidified environment system according to claim 1, it is characterised in that the measurement Device includes relative humidity sensor and differential pressure pickup；The relative humidity sensor is arranged on outside laboratory, for detecting State the rh value of low-grade fever sorption drying device outlet compressed air；The differential pressure pickup is arranged in laboratory, for examining Survey the laboratory internal pressure difference value.
- A kind of 5. high/low temperature laboratory defrosting dehumidified environment system according to claim 1, it is characterised in that the control Device is programmable logic controller (PLC).
- A kind of 6. high/low temperature laboratory defrosting dehumidified environment system according to claim 1, it is characterised in that the compression The pressure of the compressed air of air supply device outlet is 8bar, and temperature is -10 DEG C.
- 7. a kind of high/low temperature laboratory defrosting dehumidified environment system according to claim 3, it is characterised in that described unidirectional The pressure upper limit of pressure balance window exhaust pressure relief is positive pressure 30Pa.
- A kind of 8. high/low temperature laboratory defrosting dehumidified environment system according to claim 1, it is characterised in that the compression The outlet of air supply device is connected by compressed-air line with the entrance of the low-grade fever sorption drying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721108037.1U CN207262597U (en) | 2017-08-31 | 2017-08-31 | Defrost dehumidified environment system in a kind of high/low temperature laboratory |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721108037.1U CN207262597U (en) | 2017-08-31 | 2017-08-31 | Defrost dehumidified environment system in a kind of high/low temperature laboratory |
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| CN207262597U true CN207262597U (en) | 2018-04-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755642A (en) * | 2020-06-22 | 2020-10-09 | 中国科学院电工研究所 | Phase change heat exchange electrical equipment sealed cabin system for high-altitude area |
| CN111762456A (en) * | 2020-06-22 | 2020-10-13 | 中国科学院电工研究所 | Electrical equipment sealed cabin system with nitrogen gas directional temperature control function |
| CN113262827A (en) * | 2021-04-13 | 2021-08-17 | 中国科学院西安光学精密机械研究所 | High-low temperature test box with automatic dehumidification system and use method thereof |
-
2017
- 2017-08-31 CN CN201721108037.1U patent/CN207262597U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755642A (en) * | 2020-06-22 | 2020-10-09 | 中国科学院电工研究所 | Phase change heat exchange electrical equipment sealed cabin system for high-altitude area |
| CN111762456A (en) * | 2020-06-22 | 2020-10-13 | 中国科学院电工研究所 | Electrical equipment sealed cabin system with nitrogen gas directional temperature control function |
| CN111762456B (en) * | 2020-06-22 | 2022-07-22 | 中国科学院电工研究所 | Electrical equipment sealed cabin system with nitrogen gas directional temperature control function |
| CN111755642B (en) * | 2020-06-22 | 2022-07-22 | 中国科学院电工研究所 | Phase change heat exchange electrical equipment sealed cabin system for high-altitude area |
| CN113262827A (en) * | 2021-04-13 | 2021-08-17 | 中国科学院西安光学精密机械研究所 | High-low temperature test box with automatic dehumidification system and use method thereof |
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