CN107051595A - A kind of low humidity humiture test box - Google Patents
A kind of low humidity humiture test box Download PDFInfo
- Publication number
- CN107051595A CN107051595A CN201710324333.3A CN201710324333A CN107051595A CN 107051595 A CN107051595 A CN 107051595A CN 201710324333 A CN201710324333 A CN 201710324333A CN 107051595 A CN107051595 A CN 107051595A
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- CN
- China
- Prior art keywords
- magnetic valve
- capillary
- casing
- evaporator
- low humidity
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
- B01L1/02—Air-pressure chambers; Air-locks therefor
- B01L1/025—Environmental chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/12—Specific details about manufacturing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1838—Means for temperature control using fluid heat transfer medium
- B01L2300/185—Means for temperature control using fluid heat transfer medium using a liquid as fluid
Abstract
The present invention relates to a kind of low humidity humiture test box, including casing, casing front end face is provided with chamber door, door handle is installed on chamber door, it is anterior in casing to be provided with laboratory, specimen holder is installed in laboratory, rear portion is sequentially provided with circulation fan blade from top to bottom in casing, steam pipe, heater, evaporator, fan blade is circulated inside fan scroll, circulate the output end that fan blade is arranged on circulation motor, circulation motor is installed at the top of outside the enclosure, steam pipe is connected with humidification boiler, the arrival end of evaporator connects condenser by pipeline, filter is provided between evaporator and condenser, the arrival end connection compressor of condenser, the port of export of evaporator connects evaporating pressure regulating valve by pipeline respectively, magnetic valve four, evaporating pressure regulating valve is arranged in parallel with magnetic valve four；The present invention, which realizes evaporator longtime running, will not produce icing, while having reached energy-saving effect, solve air in case and dried the problem of producing influence to laboratory temperature.
Description
[technical field]
The present invention relates to environment test device technical field, specifically a kind of low humidity humiture test box.
[background technology]
At present, existing Temperature and Humidity Control is usually to take the mode of low temperature dehumidification to control low humidity point, but in order to
Ensure the continuity of humidity operation, prevent evaporimeter frosting, need to typically there is certain limitation to evaporating pressure.But so,
Will result in low humidity point can not be too low, once the dew point of relative humidity is near or below freezing point, low humidity just becomes uncontrollable.At this moment
Time is generally required by some outside dehumidifiers to handle, and equipment is transformed.
Common low humidity dehydrating unit has：Rotary wheel type Dehumidifier, absorption drier and freeze drying thermal balance humidification.
Wherein, rotary wheel type Dehumidifier：By expending substantial amounts of electric energy, the hygroscopic material of runner is dried, drying is then needed
Air passes through hygroscopic material again, and the moisture in air is absorbed, constantly regenerated, constantly moisture absorption；Absorption drier：
Compressed air is carried out after physics suction processing by drying machine, then the dry air after processing is sent into the experiment casing of needs, right
Casing air enters line replacement, and reaches the effect of wet down；And if according to conventional freeze drying, thermal balance humidification steams quickly
Hair device will freeze, and finally by evaporator, all knot is full, equipment is not worked, or even damages compressor.
Therefore, above-mentioned various dehumidification modes all have the shortcomings that certain：
(1) regenerative process of rotary wheel type Dehumidifier needs extra heat, and heating air regenerates to hirudo leech, energy consumption
Greatly, meanwhile, can be also elevated by dry air themperature, influence can be produced on the temperature of laboratory；
(2) absorption drier needs extra access compressed gas source, and adsorbs material and have service life, it is necessary to change,
Auxiliary work is very more, consumes gas energy, the effect of ventilation is generated to experiment, it is possible to test requirements document is violated, while in gas
Some small desiccant particles can be mingled with, pollution can be produced to test specimen；
(3) continuous freeze drying can not the work of long-time low humidity.
[content of the invention]
A kind of low humidity humiture test box is provided present invention aim to solve above-mentioned deficiency, steaming can be realized
Hair device longtime running will not also produce icing phenomenon, while having reached energy-saving effect, solve continuous freeze drying not
The low humidity work of energy long-time, and air produces influence by the temperature dried on laboratory in case.
Design and set on a kind of low humidity humiture test box, including casing 1, the front end face of casing 1 to achieve the above object
Have and anterior provided with laboratory 4, the laboratory 4 interior installation is installed on chamber door 2, the chamber door 2 in door handle 3, the casing 1
There is in specimen holder 5, the casing 1 rear portion provided with circulation fan blade 6, steam pipe 7, heater 8, evaporator 9, the circulation fan blade 6,
Steam pipe 7, heater 8, evaporator 9 are set gradually from top to bottom, and the circulation fan blade 6 is described inside fan scroll 30
The output end that fan blade 6 is arranged on circulation motor 10 is circulated, the circulation motor 10 is arranged on the outer top of casing 1, the steam pipe 7
It is connected with humidification boiler 11, the arrival end of the evaporator 9 connects condenser 12, the evaporator 9 and condenser by pipeline
Filter 13 is provided between 12, the arrival end connection compressor 14 of the condenser 12, the port of export of the evaporator 9 leads to respectively
Piping connection evaporating pressure regulating valve 15, magnetic valve 4 16, the evaporating pressure regulating valve 15 is in parallel with magnetic valve 4 16 to be set
Put.
Further, the pipeline between the evaporator 9 and filter 13 is provided with capillary and magnetic valve, the capillary
Pipe is arranged in series with magnetic valve, and repairing valve 17 and high-voltage switch gear 18 are equiped between the magnetic valve and filter 13.
Further, the capillary, magnetic valve are respectively arranged with two, and the capillary includes capillary 1, hair
Tubule 2 20, the magnetic valve includes magnetic valve 1, magnetic valve 2 22, the capillary 1 and the company of series connection of magnetic valve 1
Connect, the capillary 2 20 is connected in series with magnetic valve 2 22, with capillary after the capillary 1, the series connection of magnetic valve 1
2 20, magnetic valve 2 22 is arranged in parallel.
Further, it is provided with the pipeline between the arrival end of the magnetic valve 2 22 and the port of export of magnetic valve 4 16
Capillary 3 23 and magnetic valve 3 24, the capillary 3 23 are connected in series with magnetic valve 3 24.
Further, the chamber door 2 is provided with observation window 25, and the observation window 25 uses multilayer hollow safety glass, institute
State and test lead hole 26 is offered on the side wall of casing 1, the bottom of casing 1 is equiped with universal caster wheel 27.
Further, the casing 1 includes outer container and interior case, and the outer container uses the cold rolling color steel that surface plastic spraying is handled
It is made, the interior case is made of stainless steel plate, heat-insulation layer is provided between the outer container and interior case, the heat-insulation layer uses hard
Resistance combustion polyurethane foam is made with glass fibre.
Further, the side of casing 1 is connected with regulator cubicle 28, the front end face of the regulator cubicle 28 and is provided with control
Panel 29, the humidification boiler 11 is arranged on rear portion in regulator cubicle 28.
Further, the control panel 29 is by line connecting controller, and the controller uses PID arithmetic, described
The signal output part of controller is electrically connected magnetic valve 1, magnetic valve 2 22, magnetic valve 3 24 and magnetic valve 4 16.
The present invention compared with the existing technology, has the following advantages that：
(1) humidification method of equipment of the present invention employs boiler humidification, due to the mouth very little of Boiler Steam pipe, about
Only in 15mm or so, so that when low temperature and low humidity need not be humidified, the moisture in boiler hardly evaporates, and cause interior case empty
The humidity increase of gas；
(2) because the port of export in evaporator connects evaporating pressure regulating valve, magnetic valve four, the evaporation by pipeline respectively
Pressure-regulating valve is arranged in parallel with magnetic valve four, not only realizes the higher humiture point of dew-point temperature, and evaporator also will not
Freeze, and for the dew-point temperature far below humiture, easily humidity can just can also be lowered；
(3) controller is by PID arithmetic, and output signal can accurately control the action dutycycle of magnetic valve, pass through break-make
Mode, dynamic regulation dehumidifying effect so that low humidity point operation when humidification boiler never humidify, also just hardly have
New water vapour is carried out in the air of interior case, then dehumidify evaporimeter, in the case that evaporating temperature is very low, longtime running
Also icing phenomenon will not be produced, energy-saving effect is can be simultaneously reached, is worthy of popularization.
[brief description of the drawings]
Fig. 1 is the positive structure schematic of the present invention；
Fig. 2 is the side structure schematic diagram of the present invention；
Fig. 3 is the overlooking the structure diagram of the present invention；
Fig. 4 is the refrigeration cold principle schematic of the present invention；
In figure：1st, casing 2, chamber door 3, door handle 4, laboratory 5, specimen holder 6, circulation fan blade 7, steam pipe 8,
Heater 9, evaporator 10, circulation motor 11, humidification boiler 12, condenser 13, filter 14, compressor 15, evaporation
Pressure-regulating valve 16, magnetic valve 4 17, repairing valve 18, high-voltage switch gear 19, capillary 1, capillary 2 21, electromagnetism
Valve 1, magnetic valve 2 23, capillary 3 24, magnetic valve 3 25, observation window 26, test lead hole 27, universal caster wheel
28th, regulator cubicle 29, control panel 30, fan scroll 31, repairing valve two.
[embodiment]
Further explained below is made to the present invention below in conjunction with the accompanying drawings：
As shown in drawings, the present invention includes：Casing 1, the front end face of casing 1 is provided with chamber door 2, chamber door 2 and is provided with door knob
In hand 3, casing 1 it is anterior be provided with laboratory 4, laboratory 4 be provided with specimen holder 5, casing 1 rear portion provided with circulation fan blade 6, steam
Steam pipe 7, heater 8, evaporator 9, circulation fan blade 6, steam pipe 7, heater 8, evaporator 9 are set gradually from top to bottom, are circulated
Fan blade 6 is inside fan scroll 30, and circulation fan blade 6 is arranged on the output end of circulation motor 10, and circulation motor 10 is arranged on case
The outer top of body 1, steam pipe 7 is connected with humidification boiler 11, and the arrival end of evaporator 9 connects condenser 12, evaporator 9 by pipeline
Filter 13 is provided between condenser 12, the arrival end connection compressor 14 of condenser 12, the port of export of evaporator 9 leads to respectively
Piping connection evaporating pressure regulating valve 15, magnetic valve 4 16, evaporating pressure regulating valve 15 are arranged in parallel with magnetic valve 4 16；Its
In, the pipeline between evaporator 9 and filter 13 is provided with capillary and magnetic valve, and capillary is arranged in series with magnetic valve, electricity
Repairing valve 17 and high-voltage switch gear 18 are equiped between magnet valve and filter 13.
The capillary, magnetic valve are respectively arranged with two, and capillary includes capillary 1, capillary 2 20, magnetic valve
Including magnetic valve 1, magnetic valve 2 22, capillary 1 is connected in series with magnetic valve 1, capillary 2 20 and magnetic valve two
22 are connected in series, and capillary 1, magnetic valve 1 are arranged in parallel after connecting with capillary 2 20, magnetic valve 2 22；Magnetic valve
Capillary 3 23 and magnetic valve 3 24, capillary are provided with pipeline between 2 22 arrival end and the port of export of magnetic valve 4 16
Pipe 3 23 is connected in series with magnetic valve 3 24.
In the present invention, chamber door 2 is provided with observation window 25, and observation window 25 uses multilayer hollow safety glass, the side wall of casing 1
On offer test lead hole 26, the bottom of casing 1 is equiped with universal caster wheel 27；Casing 1 includes outer container and interior case, and outer container uses table
The cold rolling color steel of face plastic-spraying processing is made, and interior case is made of stainless steel plate, and heat-insulation layer, insulation are provided between outer container and interior case
Layer is made using hard resistance combustion polyurethane foam with glass fibre；The side of casing 1 is connected with regulator cubicle 28, the front end of regulator cubicle 28
Control panel 29 is provided with face, humidification boiler 11 is arranged on rear portion in regulator cubicle 28；Control panel 29 passes through connection control
Device processed, controller uses PID arithmetic, and the signal output part of controller is electrically connected magnetic valve 1, magnetic valve 2 22, electromagnetism
Valve 3 24 and magnetic valve 4 16.
The temperature range of the present invention is -20-150 DEG C, and humidity range is 10-98%RH, often does humidity point for 15 DEG C 20%
RH and 10 DEG C of 25%RH, its humidification method is humidified and PID auto-adjustment control modes using boiler.Due to 15 DEG C of 20%RH
Corresponding dew-point temperature is -6.9 DEG C, and the dew-point temperature that 10 DEG C of 25%RH are answered is -8.2 DEG C, and conventional dehumidification mode can not reach
Arrive.Therefore, the present invention optimizes on the basis of conventional humiture equipment in humidification method, refrigeration and control, so that real
The control steady in a long-term of low temperature and low humidity is showed.
The humidification method of equipment of the present invention employs boiler humidification, due to the mouth very little of Boiler Steam pipe, only about
It is big in 15mm or so, so that when low temperature and low humidity need not be humidified, the moisture in boiler hardly evaporates, it is interior without causing
The humidity increase of case air.For the higher humiture point of dew-point temperature, refrigerant is after evaporator comes out, and magnetic valve four is to close
Close, refrigerant can only be dammed by evaporating pressure regulating valve, the pressure of evaporator is lifted to 5 kilograms or so of pressure (pressure is got over
Height, evaporating temperature is higher), and the corresponding evaporating temperature of 5 kilograms of pressure is just more than 0 degree, so refrigeration unit works always,
Evaporator is all without icing；But the corresponding dew-point temperatures of 15 DEG C of 20%RH are -6.9 DEG C, the dew-point temperature that 10 DEG C of 25%RH are answered
For -8.2 DEG C, it is not all right to carry out dehumidifying after evaporating pressure regulating valve as these low temperature and low humidities, and at this moment magnetic valve four can be beaten
Open, by evaporating pressure regulating valve short circuit, realization is not controlled to evaporating pressure, because the pressure in evaporator have decreased to
1.5 kilograms or so (evaporating temperature is about at -25 DEG C), far below the dew-point temperature of humiture, so that easily just can be by
Humidity lowers.After humidity lowers, controller passes through PID arithmetic, output signal, the action duty of accurate control magnetic valve two
Than by way of break-make, dynamic regulation dehumidifying effect, so that humidification boiler is never humidified, also just hardly has
New water vapour is carried out in the air of interior case, even if temperature is very low, then dehumidify evaporimeter, longtime running will not also produce icing
Phenomenon, can be simultaneously reached energy-saving effect.
The present invention is simultaneously not limited to the embodiments described above limitation, other any Spirit Essences and principle without departing from the present invention
Lower made change, modification, replacement, combination, simplification, should be equivalent substitute mode, be included in the protection model of the present invention
Within enclosing.
Claims (8)
1. a kind of low humidity humiture test box, it is characterised in that：Including casing (1), casing (1) front end face is provided with chamber door
(2), it is provided with the chamber door (2) in door handle (3), the casing (1) anterior provided with laboratory (4), the laboratory (4)
Specimen holder (5) is inside installed, the interior rear portion of the casing (1) is provided with circulation fan blade (6), steam pipe (7), heater (8), evaporator
(9), the circulation fan blade (6), steam pipe (7), heater (8), evaporator (9) are set gradually from top to bottom, the circulated air
Leaf (6) is internal located at fan scroll (30), and the circulation fan blade (6) is arranged on the output end of circulation motor (10), the circulation
Motor (10) is arranged on casing (1) top outside, and the steam pipe (7) is connected with humidifying boiler (11), and evaporator (9) enter
Mouth end connects condenser (12) by pipeline, and filter (13) is provided between the evaporator (9) and condenser (12), described cold
The arrival end connection compressor (14) of condenser (12), the port of export of the evaporator (9) connects evaporating pressure by pipeline respectively
Regulating valve (15), magnetic valve four (16), the evaporating pressure regulating valve (15) are arranged in parallel with magnetic valve four (16).
2. low humidity humiture test box as claimed in claim 1, it is characterised in that：The evaporator (9) and filter (13)
Between pipeline be provided with capillary and magnetic valve, the capillary is arranged in series with magnetic valve, the magnetic valve and filter
(13) repairing valve (17) and high-voltage switch gear (18) are equiped between.
3. low humidity humiture test box as claimed in claim 2, it is characterised in that：The capillary, magnetic valve are set respectively
There are two, the capillary includes capillary one (19), capillary two (20), the magnetic valve includes magnetic valve one (21), electricity
Magnet valve two (22), the capillary one (19) is connected in series with magnetic valve one (21), the capillary two (20) and magnetic valve two
(22) it is connected in series, after the capillary one (19), magnetic valve one (21) series connection with capillary two (20), magnetic valve two (22) simultaneously
Connection is set.
4. low humidity humiture test box as claimed in claim 3, it is characterised in that：The arrival end of the magnetic valve two (22) with
Capillary three (23) and magnetic valve three (24), the capillary three are provided with pipeline between the port of export of magnetic valve four (16)
(23) it is connected in series with magnetic valve three (24).
5. low humidity humiture test box as claimed in claim 4, it is characterised in that：The chamber door (2) is provided with observation window
(25), the observation window (25) uses and offers test lead hole on multilayer hollow safety glass, the side wall of the casing (1)
(26), casing (1) bottom is equiped with universal caster wheel (27).
6. the low humidity humiture test box as described in claim 4 or 5, it is characterised in that：The casing (1) includes outer container and interior
Case, the cold rolling color steel that the outer container is handled using surface plastic spraying is made, and the interior case is made of stainless steel plate, the outer container
Heat-insulation layer is provided between interior case, the heat-insulation layer is made using hard resistance combustion polyurethane foam with glass fibre.
7. low humidity humiture test box as claimed in claim 6, it is characterised in that：Casing (1) side is connected with electrically
Control panel (29) is provided with cabinet (28), the front end face of the regulator cubicle (28), the humidification boiler (11) is arranged on electrically
Cabinet (28) interior rear portion.
8. low humidity humiture test box as claimed in claim 7, it is characterised in that：The control panel (29) is connected by circuit
Connect controller, the controller uses PID arithmetic, the signal output part of the controller be electrically connected magnetic valve one (21),
Magnetic valve two (22), magnetic valve three (24) and magnetic valve four (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324333.3A CN107051595A (en) | 2017-05-10 | 2017-05-10 | A kind of low humidity humiture test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324333.3A CN107051595A (en) | 2017-05-10 | 2017-05-10 | A kind of low humidity humiture test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107051595A true CN107051595A (en) | 2017-08-18 |
Family
ID=59596411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710324333.3A Pending CN107051595A (en) | 2017-05-10 | 2017-05-10 | A kind of low humidity humiture test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107051595A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-05-10 CN CN201710324333.3A patent/CN107051595A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170818 |