CN205721437U - A kind of casing with constant temperature and sound insulation function - Google Patents
A kind of casing with constant temperature and sound insulation function Download PDFInfo
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- CN205721437U CN205721437U CN201620332640.7U CN201620332640U CN205721437U CN 205721437 U CN205721437 U CN 205721437U CN 201620332640 U CN201620332640 U CN 201620332640U CN 205721437 U CN205721437 U CN 205721437U
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- temperature
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- aluminium sheet
- casing
- temperature control
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Abstract
The utility model discloses a kind of casing with constant temperature and sound insulation function, relate to accurate measurement and modern control technology field.This utility model is formed one by 6 pieces of panels and closes space, and wherein left panel, front panel, right panel, rear board and top panel have identical board face structure, are respectively arranged with temperature sensor and heating film in it；DC source, temperature control circuit, temperature sensor, heating film are sequentially connected with composition temperature control system；Temperature sensor and digital multimeter are connected to the temperature in detection case body.The isolation of this utility model sound to external world is high；After temperature control system works, the temperature inside the box fluctuation is less；Whole temperature control system, in addition to base plate, the time that remaining panel temperature reaches balance is short；After each panel temperature is stable, the power consumption required for maintenance design temperature is little.In a word, this utility model is that a kind of combination active temperature controls and the structure of passive sound insulation, can be widely applied to the science and technology field needing to carry out environment parameter control.
Description
Technical field
This utility model relates to accurate measurement and modern control technology field, particularly relate to one have simultaneously constant temperature and every
The casing of sound function.
Background technology
Along with bio-pharmaceuticals, nano measurement and laser technology etc. need to carry out the science and technology field of environment parameter control
Development, they are more and more higher to the requirement of temperature control precision and the uniformity.Such as biotic experimenies such as antibacterial culturing, technology
The ripe commercial constant incubator that control accuracy is ± 0.1 DEG C can meet its requirement.In micro-nano technology field, micro electronmechanical
System (MEMS) is generally of various micro/nano structure, such as micro-cell electron capture detector, micro-hole, miniature step etc..These microdevices
Physical dimension, nearly all in micro-nano magnitude, to these micro element sizes are carried out accurate measurement, then needs to carry out it sternly
The environment parameter control of lattice, the factors such as temperature in environment, humidity and vibration that reduce are on processing and the impact of dimensional measurement.Due to ring
The precision of the change meeting extreme influence dimensional measurement of border temperature, the measurement of the most micro-nano magnitude needs at temperature-controlled precision
Reach ± isoperibol of 0.01 DEG C under carry out.In the field of high-precision measurement of laser interferometer, disturb reducing environment parameter
Dynamic, such as temperature, sound and vibration etc., it is proposed that requirements at the higher level, not only need temperature is carried out high-precision control, and need
Sound insulation reduces micro-vibration that acoustic pressure causes, and improves the frequency stability of laser of chamber frequency stabilization with this.Therefore design possesses more
High temperature-controlled precision is provided simultaneously with the body structure of sound insulation function and has the demand that is widely applied very much.
In order to improve the casing isolation performance to low-frequency sound, it is thick that casing outer layer support aluminium sheet is the most all designed to comparison
Weight.This thick and heavy support aluminium sheet is directly carried out temperature control, there is following difficulty: when first casing reaches the response of design temperature
Between long, not easily pass through the method measuring its step response to optimize the integration of PID (PID) temperature controller and micro-
Between timesharing, thus optimize temperature control system；Secondly because aluminium sheet is heavier, thermal capacitance is relatively big, maintains the power required for design temperature relatively
Greatly.These problems all can have a strong impact on the steady in a long-term of the temperature inside the box after the temperature-controlled precision of casing and casing Guan Bi control temperature
Property.
Utility model content
The purpose of this utility model is that the shortcoming and defect overcoming prior art, it is provided that one have simultaneously constant temperature and
The casing of sound insulation function.
The purpose of this utility model is achieved in that
Panel construction design increases by one layer of thin aluminum sheet and it is carried out temperature control, and the support of the most external thickness weight
Aluminium sheet carries out temperature control.This new structure design makes this utility model possess precision temperature control while possessing sound insulation function
Function processed, and have that the response time that temperature-controlled precision is high, reach design temperature is short, maintain design temperature required for effect little etc.
Advantage.The passive sound insulation that this utility model uses can be used for the constant temperature sound insulation dress that other are similar with the method that temperature actively controls
Put.This utility model mechanical structure portion is simple, it is easy to processing.
One, structure of the present utility model is:
It is made up of casing, DC source and temperature control circuit and digital multimeter；
By 6 pieces of panels, casing i.e. includes that top panel, left panel, front panel, right panel, rear board and bottom panel form one
Closing space, wherein left panel, front panel, right panel, rear board and top panel have identical board face structure, set respectively in it
It is equipped with temperature sensor and heating film；
DC source, temperature control circuit, temperature sensor, heating film are sequentially connected with composition temperature control system；
Temperature sensor and digital multimeter are connected to the temperature in detection case body.
Two, operational approach of the present utility model
1. six pieces of panel sectional are become an airtight casing, by critesistor (temperature sensor) and the heating of each panel
Film (performer) is connected in the outer respective temperature control circuit of case, respectively to each panel temperature control, and totally six tunnel temperature control；
Close the temperature control loops of each panel of casing the most successively, respectively each panel is carried out temperature control；
3., after each panel temperature is stable, the gain of each panel temperature control loop is stepped up, until to environmental temperature fluctuation
Pressing result best, simultaneity factor can stably work long hours.
This utility model has following advantages and a good effect:
1. the isolation of casing sound to external world is high, and all-bottom sound is particularly pressed with the decay close to 100 times；
2. after temperature control system works, the temperature inside the box fluctuation is less, and long-term temperature fluctuates below 0.005 DEG C；
The most whole temperature control system, in addition to base plate, the time that remaining panel temperature reaches balance is short；
After the most each panel temperature is stable, the power consumption required for maintenance design temperature is little.
In a word, this utility model is that a kind of combination active temperature controls and the body structure of passive sound insulation, can extensively apply
Need to carry out ambient parameter control in laser technology, nano measurement, instrument test, Precision Machining, bio-pharmaceuticals and medical science detection etc.
The science and technology field of system.
Accompanying drawing explanation
Fig. 1 is block diagram of the present utility model；
Fig. 2 is the structural representation of this utility model top panel；
Fig. 3 is the structural representation of this utility model bottom panel, in figure:
100 casings,
110 top panels,
111 top heat barrier foams, 112 top support aluminium sheets, 113 top aluminum foil gas bubble films,
114 top heating films, 115 top internal layer aluminium sheets, 116 top acoustical cottons,
117 top copper billets, 118 top temperature sensors；
120 left panels, 130 front panels, 140 right panel, 150 rear boards,
160 bottom panels,
161 ends support aluminium sheet, 162 end heating films, 163 end aluminum foil gas bubble films,
164 bottom stainless steel plates, 165 bases, the temperature sensor of 166 ends；
210 DC sources, 220 temperature control circuits；
300 digital multimeter.
Fig. 4 is temperature and the fluctuation comparison diagram of residing laboratory indoor temperature in it after casing Guan Bi temperature control stably,
In figure:
A is temperature in it after casing Guan Bi temperature control stably,
B is the indoor temperature of laboratory residing for casing；
Fig. 5 is the quantitative measurement figure of this utility model soundproof effect.
Detailed description of the invention
Below in conjunction with the accompanying drawings, this utility model is further illustrated:
One, overall
If Fig. 1 this utility model is by casing 100, DC source 210 and temperature control circuit 220 and digital multimeter 300 structure
Become；
Casing 100 is i.e. included top panel 110, left panel 120, front panel 130, right panel 140, rear board by 6 pieces of panels
150 and bottom panel 160 form one close space, wherein left panel 120, front panel 130, right panel 140, rear board 150 and
Top panel 110 has identical board face structure, is respectively arranged with temperature sensor and heating film in it；
DC source 210, temperature control circuit 220, temperature sensor, heating film are sequentially connected with composition temperature control system；
Temperature sensor and digital multimeter 300 are connected to detect the temperature in casing 100.
Two, functional part
1, top panel 110
Such as Fig. 2, top panel 110 includes pushing up heat barrier foam 111, top support aluminium sheet 112, top aluminum foil gas bubble film 113, top heating
Film 114, top internal layer aluminium sheet 115, top acoustical cotton 116, top copper billet 117 and top temperature sensor 118；
From top to bottom, in top heat barrier foam 111, top support aluminium sheet 112, top aluminum foil gas bubble film 113, top heating film 114, top
Layer aluminium sheet 115 is sequentially overlapped into a plate body with top acoustical cotton 116；
In the internal layer aluminium sheet 115 of top, it is provided with top copper billet 117, in two circular holes of top copper billet 117, is respectively arranged with two
Individual top temperature sensor 118, one is used for temperature control, and another is used for thermometric.
1) top heat barrier foam 111
Top heat barrier foam 111 is a kind of heat-insulating heat-preserving material.
For reducing top panel 110 and the heat transfer of casing outer air.
2) top support aluminium sheet 112
Top support aluminium sheet 112 be one piece of thickness be the aluminium sheet of 15 millimeters.
Sound wave is propagated in solids, and a part of mechanical energy is converted to heat energy；Under the conditions of material is the most bubble-tight, material
Mass area ratio is the biggest, and it is the strongest to the isolating power of the sound of critical frequency frequencies below section；Top support aluminium sheet 112 designs
Must be more thick and heavy, to improve the isolation performance of its centering low-frequency sound；In view of the fixing screw supporting aluminium sheet 112 load-bearing,
Seal and assemble and to problems such as the isolation effects of sound, the thickness supporting aluminium sheet 112 done compromise process.
3) top aluminum foil gas bubble film 113
Top aluminium sheet bubble chamber film 113 be a kind of top and bottom be high reflection aluminizer, the inside be double-layer polyethylene bubble layer every
Hot material；
Its top and bottom can reflective thermal radiation, the inside can slow down conduction of heat and intercept thermal convection current, be used for reducing in casing
Heat exchange between air and top support aluminium sheet 112.
4) top heating film 114
Heating film 114 is a kind of polyimide heater film, as the performer of top panel temperature control system.
5) top internal layer aluminium sheet 115
Top internal layer aluminium sheet 115 be one piece of thickness be the thin aluminum sheet of 2 millimeters, as the quilt of top panel 110 temperature control system
Temperature control object.Oxidation processes has been done on internal layer aluminium sheet 115 surface, top, it is therefore intended that reduce top internal layer aluminium sheet 115 and air in casing
Between heat radiation.
6) top acoustical cotton 116
Top acoustical cotton 116 is the sound-absorbing material of a kind of porous type, its internal full through minim gap.
When sound wave incident to porous material surface, can enter in pore, cause intrapore air and material originally
Body vibrates, and the friction of air and viscous effect make vibration kinetic energy (acoustic energy) constantly be converted into heat energy, so that sound wave sorrow subtracts, consumes
Part acoustic energy, even if some acoustic energy permeable material arrives wall, also can again pass by sound-absorbing material when reflection, and acoustic energy is again
Once absorbed.The sound-absorbing material of porous type has sound absorption characteristics, i.e. low frequency absorption is poor, and high frequency absorbs sound.
7) top copper billet 117
Top copper billet 117 is a kind of square brass ingot, and length × width × height=35 × 35 × 7 millimeter, its side is provided with two
Individual side by side at a distance of 3.4 millimeters, a diameter of 2.2 millimeters, the degree of depth be the circular hole of 15 millimeters, be used for top temperature sensor 118 is installed.
8) top temperature sensor 118
Top temperature sensor 118 is the critesistor of a kind of negative temperature coefficient.
Top temperature sensor 118 includes two critesistor；The two critesistor is separately mounted to push up copper billet 117 side
Two circular holes in, one of them be used for temperature control, another be used for thermometric.
2, bottom panel 160
Such as Fig. 3, bottom panel 160 includes that the end supports aluminium sheet 161, end heating film 162, end aluminum foil gas bubble film 163, bottom stainless steel
Plate 164, base 165 and end temperature sensor 166；
From top to bottom, aluminium sheet 161, end heating film 162, end aluminum foil gas bubble film 163, bottom stainless steel plate 164 and base are supported
165 are sequentially overlapped into a plate body with 4 spikes；
Being provided with temperature sensor 166 at the bottom of two in the end supports aluminium sheet 161, one is used for temperature control, and another is used for surveying
Temperature.
1) end, supports aluminium sheet 161
The end support aluminium sheet 161 be one piece of thickness be the aluminium sheet of 30 millimeters, owing to needs support weight, the end, supports aluminium sheet 161
Design more thick and heavy than other support aluminium sheet, thus ensure that the deformation quantity supporting aluminium sheet 161 at the bottom of when supporting weight is little.
2) end heating film 162
Heating film 162 is identical with the 26S Proteasome Structure and Function of top heating film 114.
3) end aluminum foil gas bubble film 163
End aluminum foil gas bubble film 163 is identical with the 26S Proteasome Structure and Function of top aluminum foil gas bubble film 113.
4) bottom stainless steel plate 164
Bottom stainless steel plate 164 be one piece of thickness be the thin corrosion resistant plate of 2 millimeters.
The heat transfer between aluminium sheet 161 and casing outer air is supported for aluminum foil gas bubble film 163 at the bottom of fixing filling and the reduction end.
5) base 165
Base 165 is four cylindrical shape piece of stainless steel.
It is used for supporting whole casing.
3, DC source 210, temperature control circuit 220
1) DC source 210
DC source 210 is a kind of variable dc regulated power supply.
For powering to temperature control circuit 220.
2) temperature control circuit 220
Temperature control circuit 220 is a kind of typical analog pid (proportional integral derivative) temperature-control circuit, including electric bridge, front
The electronic circuits such as the PID controller that end amplifier and operational amplifier are constituted.
Every piece of panel independence temperature control, so needing 6 temperature control circuits.
4, digital multimeter 300
Digital multimeter 300 is a kind of general high-precision electronic measuring instrument.
It is used for measuring the resistance of temperature sensor critesistor.
Three, operation principle
1, temperature controls
Top panel temperature control system is by DC source 210, temperature control circuit 220, top temperature sensor 118, top unlined aluminium
Plate 115, top heating film 114 are sequentially connected with composition.Top temperature sensor 118 is fixed in two circular holes of copper billet 117 side, top,
The head of top temperature sensor 118 is coated with the heat-conducting silicone grease that last layer is uniform and thin, contacts with the hole wall no pressure of circular hole, it is ensured that
Between top temperature sensor 118 and top copper billet 117, there is good conduction of heat.Top copper billet 117 is fixed on top internal layer aluminium sheet 115
Inner side.It is coated with, between copper billet 117 surface, top and top internal layer aluminium sheet 115 inner surface, the heat-conducting silicone grease that last layer is uniform and thin, it is ensured that top
Between copper billet 117 and top internal layer aluminium sheet 115, there is good conduction of heat.The performer top heating of top panel temperature control system
Film 114 is pasted onto by the outside of temperature control object top internal layer aluminium sheet 115 by gum.Top heat barrier foam 111 is pasted onto by gum
The outside of top support aluminium sheet 112, is filled with top aluminum foil gas bubble film 113, top between top internal layer aluminium sheet 115 and top support aluminium sheet 112
Heat barrier foam 111 and top aluminum foil gas bubble film 113 all play the effect of heat-insulation and heat-preservation, it is possible to reduce the heat transfer between aluminium sheet and air,
Thus reduce casing 100 and maintain the power consumption required for design temperature.
Top temperature sensor 118 is connected to digital multimeter 310 by shielding line and constitutes the outer temperature survey system of top panel ring
System, for measuring the temperature fluctuation of temperature control rear top surface plate 110 temperature controlling point near-end.
Bottom panel temperature control system is by DC source 210, temperature control circuit 220, end temperature sensor 166, end heating film
162, the end, supports aluminium sheet 161 and is sequentially connected with composition.End temperature sensor 166 is arranged in the circular hole that the end supports inside aluminium sheet 161.
The head of end temperature sensor 166 is coated with the heat-conducting silicone grease that last layer is uniform and thin, contacts with circular hole hole wall no pressure, it is ensured that end temperature
Degree sensor 166 and the end, support and have good conduction of heat between aluminium sheet 161.End heating film 162 is pasted onto the end by gum and props up
Outside support aluminium sheet 162.The end, supports the work of the end 163 heat-insulation and heat-preservations of aluminum foil gas bubble film between aluminium sheet 161 and bottom stainless steel plate 164
With.
2, sound insulation
Use top support aluminium sheet 112, the end to support six blocks of support aluminium sheets such as aluminium sheet 161 and silica gel strip carries out airtight installation, shape
Become a kind of airtight body structure.Thick and heavy support aluminium sheet centering low-frequency sound has preferable attenuation, adds sound-absorbing
Cotton centering high-frequency sound has preferable attenuation, can reach preferable soundproof effect, so that this utility model is at tool
Sound insulation function is possessed while standby temperature incubation function.
Four, the actual result measuring gained
Fig. 4 shows the temperature control effect after this utility model stable temperature control, in a is this utility model stable temperature control rear box
Temperature, b is the indoor temperature of laboratory residing for this utility model.
Measuring method: for the fluctuation of air themperature in measure case body, installs a foraminate aluminium block of brill, aluminum in casing
Block is separated by adiabator with casing, and critesistor is arranged in the aperture on aluminium block.Critesistor head smears one layer all
Even heat-conducting silicone grease, contacts with hole wall no pressure.Measure the resistance of critesistor by digital multimeter, thus be converted in casing
Temperature.Outside casing, a packaged paper tinsel resistance is installed, measures the resistance of paper tinsel resistance again by digital multimeter,
Thus be converted to the indoor temperature of laboratory.After casing Guan Bi temperature control is stable, indoor temperature fluctuation is about 1 DEG C, and the temperature inside the box is corresponding
Fluctuation is about 0.005 DEG C.
Fig. 4 gives the sound insulation test result of casing.
Method of testing: face casing outside casing and place a speaker, and apply a sine voltage signal to it, as
Single frequency excitation source.Then in casing, a microphone is placed, as receptor.In the case of this utility model is airtight, with phase-locked
Virtual value A of the voltage signal of microphone output in amplifier measuring caseC.In the case of casing fully opens, then measure microphone
Virtual value A of the sine voltage signal of output respective frequenciesO.Soundproof effect of the present utility model is weighed by compacting ratio, pressure
System compares SRa=AO/AC.By frequency scanning, apply the sine voltage signal of different frequency to speaker, thus measure this practicality
The novel isolation effect to different frequency sound.
Experiment shows, this utility model is to 10-103Acoustic perturbation in Hz frequency domain, has close to about 100 times decline
Subtract；At some frequency such as 60Hz, there is the decay of the highest 1000 times；It is due to casing that decay near 240Hz reduces suddenly
Mesomerism cause.
Claims (3)
1. a casing with constant temperature and sound insulation function, it is characterised in that:
It is made up of casing (100), DC source (210) and temperature control circuit (220) and digital multimeter (300)；
Casing (100) by 6 pieces of panels i.e. include top panel (110), left panel (120), front panel (130), right panel (140),
Rear board (150) and bottom panel (160) form one and close space, wherein left panel (120), front panel (130), right panel
(140), rear board (150) and top panel (110) there is identical board face structure, be respectively arranged with temperature sensor in it and add
Hotting mask；
DC source (210), temperature control circuit (220), temperature sensor, heating film are sequentially connected with composition temperature control system；
Temperature sensor and digital multimeter (300) are connected to detect the temperature in casing (100).
2. a kind of casing with constant temperature and sound insulation function as described in claim 1, it is characterised in that:
Described top panel (110) includes pushing up heat barrier foam (111), top support aluminium sheet (112), top aluminum foil gas bubble film (113), top
Heating film (114), top internal layer aluminium sheet (115), top acoustical cotton (116), top copper billet (117) and top temperature sensor (118)；
From top to bottom, top heat barrier foam (111), top support aluminium sheet (112), top aluminum foil gas bubble film (113), top heating film (114),
Top internal layer aluminium sheet (115) is sequentially overlapped into a plate body with top acoustical cotton (116)；
In top internal layer aluminium sheet (115), it is provided with top copper billet (117), is respectively arranged with in two circular holes on top copper billet (117)
Two tops temperature sensor (118), one is used for temperature control, and another is used for thermometric.
3. a kind of casing with constant temperature and sound insulation function as described in claim 1, it is characterised in that:
Described bottom panel (160) includes that the end supports aluminium sheet (161), end heating film (162), end aluminum foil gas bubble film (163), the end not
Rust steel plate (164), base (165) and end temperature sensor (166)；
From top to bottom, support aluminium sheet (161), end heating film (162), end aluminum foil gas bubble film (163), bottom stainless steel plate (164) and
Base (165) is sequentially overlapped into a plate body with 4 spikes；
Being provided with temperature sensor at the bottom of two (166) in the end supports aluminium sheet (161), one is used for temperature control, and another is used for surveying
Temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620332640.7U CN205721437U (en) | 2016-04-20 | 2016-04-20 | A kind of casing with constant temperature and sound insulation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620332640.7U CN205721437U (en) | 2016-04-20 | 2016-04-20 | A kind of casing with constant temperature and sound insulation function |
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| Publication Number | Publication Date |
|---|---|
| CN205721437U true CN205721437U (en) | 2016-11-23 |
Family
ID=57297456
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676914A (en) * | 2016-04-20 | 2016-06-15 | 中国科学院武汉物理与数学研究所 | Box body with constant temperature and sound insulation functions |
-
2016
- 2016-04-20 CN CN201620332640.7U patent/CN205721437U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676914A (en) * | 2016-04-20 | 2016-06-15 | 中国科学院武汉物理与数学研究所 | Box body with constant temperature and sound insulation functions |
| CN105676914B (en) * | 2016-04-20 | 2018-01-09 | 中国科学院武汉物理与数学研究所 | There is constant temperature and the casing of sound insulation function simultaneously |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 430071 Xiao Hong, Wuchang District, Wuhan District, Hubei, Shanxi, 30 Patentee after: Institute of precision measurement science and technology innovation, Chinese Academy of Sciences Address before: 430071 small Hongshan, Wuhan, Hubei, Wuchang Patentee before: WUHAN INSTITUTE OF PHYSICS AND MATHEMATICS, CHINESE ACADEMY OF SCIENCES |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201224 Address after: 430014 22 / F, building C3, future science and technology building, 999 Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: Wuhan Zhongke Medical Technology Industrial Technology Research Institute Co.,Ltd. Address before: 430071 Xiao Hong, Wuchang District, Wuhan District, Hubei, Shanxi, 30 Patentee before: Institute of precision measurement science and technology innovation, Chinese Academy of Sciences |