CN209296542U - A kind of temperature/humidity verification box - Google Patents
A kind of temperature/humidity verification box Download PDFInfo
- Publication number
- CN209296542U CN209296542U CN201920028543.2U CN201920028543U CN209296542U CN 209296542 U CN209296542 U CN 209296542U CN 201920028543 U CN201920028543 U CN 201920028543U CN 209296542 U CN209296542 U CN 209296542U
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- Prior art keywords
- temperature
- humidity
- valve
- humidifier
- operating room
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses a kind of temperature/humidity verification boxs, it is characterized in that, including cabinet, heating devices heat valve, refrigerating plant, refrigeration valve, humidifier, temperature sensor, humidity sensor and blower, the cabinet is disposed with outer layer, middle layer and internal layer from outside to inside, there is operating room in the internal layer, there is interchange channel, which is equipped with several ventholes between the middle layer and internal layer；The heating device is by into connecting in hot air pipe and the interchange channel；Heating valve setting is on hot air pipe；The refrigerating plant is by into connecting in cool air hose and interchange channel；Refrigeration valve setting is on cool air hose；The humidifier in humidification air hose and the operating room by connecting；The humidifier valve is arranged on the humidification air hose；The temperature sensor and humidity sensor are arranged in operating room, which is used to make to generate the air-flow circulated in interchange channel.The utility model can realize that the work indoor temperature and humidity of product cabinet in test is uniform and stable.
Description
Technical field
The utility model relates to a kind of temperature/humidity verification boxs.
Background technique
The purposes of temperature/humidity verification box: 1. are suitable for electrician, electronics, instrument and meter and other products, components and material
Adaptive testing when storing, transport under the warm and humid environment of high/low temperature alternation, using；It is each electron-like, electrician, electric appliance, plastic cement
Equal raw material and device are resisted cold, are heat-resisting, moisture-proof, dry tolerance are tested and the reliability test equipment of quality control engineering；2. especially
It is followed suitable for the high temperature resistant of the products such as optical fiber, LCD, crystal, inductance, PCB, battery, computer, mobile phone, low temperature resistant, temperature-resistant wet alternation
Ring test.
And current temperature/humidity verification box includes the cabinet with operating room, heating device, refrigerating plant and humidifier, is somebody's turn to do
Temperature sensor and humidity sensor are provided in operating room, when the heating device, refrigerating plant and humidifier are respectively used to pair
The heating of work room air, cooling and increase humidity.Existing temperature/humidity verification box has the following disadvantages when in use, and analyzes
It is as follows:
First, since heating device, refrigerating plant and humidifier after air inlet, lead to local height in the operating room of cabinet
Temperature, topical hypothermia and local high humility problem, the numerical value detected there are temperature sensor and humidity sensor and test products
Actual value deviation is very big, and there are accuracy reductions.
Second, since heating device, refrigerating plant and humidifier after air inlet, lead to local height in the operating room of cabinet
Temperature, topical hypothermia and local high humility problem, the experimental condition of test products different location is uneven, and there are experimental conditions not
Accurately.
Third, since heating device, refrigerating plant and humidifier after air inlet, lead to local height in the operating room of cabinet
Temperature, topical hypothermia and local high humility problem, there are temperature and humidity variations fastly, and amplitude is big, is unfavorable for precisely going up and down by a small margin warm and humid
Degree.
Utility model content
In view of said one existing in the prior art or multiple defects, the utility model provides a kind of temperature and humidity calibrating
Case.
To achieve the above object, the utility model provides a kind of temperature/humidity verification box, which is characterized in that including cabinet
(1), which is disposed with outer layer (1-1), middle layer (1-2) and internal layer (1-3) from outside to inside, in the internal layer (1-3)
With operating room (N), there is interchange channel (M) between the middle layer (1-2) and internal layer (1-3), the middle layer (1-2) is using guarantor
Adiabator, the internal layer (1-3) are equipped with several ventholes (1-31)；Heating device (2), the heating device (2) is by into hot wind
It is connect in pipe (3) and the interchange channel (M)；Heating valve (4), the heating valve (4) setting is described on hot air pipe (3)；System
Device for cooling (5), the refrigerating plant (5) into cool air hose (6) and the interchange channel (M) are interior by connecting；Refrigeration valve (7), the system
Low temperature valve (7) setting is described on cool air hose (6)；The humidifier (8), the humidifier (8) pass through humidification air hose (9) and the work
Make connection in room (1-1)；Humidifier valve (10), the humidifier valve (10) are arranged on the humidification air hose (9)；Temperature sensor
(11), the temperature sensor (11) setting is in the operating room (1-1)；Humidity sensor (12), the humidity sensor (12)
Setting is in the operating room (1-1)；Blower (13), the blower (13) generate recycle stream for making in the interchange channel (M)
Dynamic air-flow；Programmable logic controller (PLC), the programmable logic controller (PLC) and humidifier valve (10), heating valve (4), refrigeration valve (7),
Humidifier valve (10), temperature sensor (11), humidity sensor (12) and blower (13) are electrically connected.
It further, further include PID controller, which is electrically connected with programmable logic controller (PLC).
Preferably, the middle layer (1-2) is using heat preservation cotton material.
Preferably, each venthole (1-31) is circumferentially uniformly distributed along the internal layer (1-3) outer wall.
Further, there is installation cavity (L) between the outer layer (1-1) and middle layer (1-2)；The heating device (2),
Refrigerating plant (5) and humidifier (8) are mounted in the installation cavity (L).
Further, observation window (1-11) is provided on cabinet (1) outside.
Further, control panel (1-12) is provided on cabinet (1) outside.
Preferably, the blower (13) uses circulation fan.
The beneficial effects of the utility model are:
First, for the utility model since the middle layer of cabinet is using heat preservation cotton material, heat in the middle layer will not be to
Loss is distributed outside, there is energy-saving effect；
Second, the utility model due to enter interchange channel in hot gas, cold air or moisture can through blower work circulation and
It uniformly mixes, gas inside and outside each venthole of circumferential direction on internal layer through uniformly handing in the work indoor gas and the interchange channel
It changes, work indoor air flow temperature and humidity meeting even variation can prevent localized hyperthermia in operating room, topical hypothermia and local high humidity
Degree problem, therefore its temperature sensor and the numerical value of humidity sensor detection are more acurrate, while guarantee test product different location
Experimental condition it is uniform, test result is more acurrate, stable and reliable；Simultaneously because in work indoor gas and the interchange channel
The advantages that uniform low speed exchange of gas, has temperature and humidity variation small, and amplitude is small, is conducive to by a small margin precisely lifting temperature and humidity；
Third, the utility model are controlled temperature and humidity ratio, can form different temperature and humidity due to being controlled using PID controller
, and moisture field is uniformly distributed in the operating room of cabinet, it is ensured that less than 0.1 DEG C deviation requirement of temperature uniformity can meet
Product higher precision test condition；
4th, the utility model can realize automatic control, work more stable and reliable, and Temperature and Humidity Control is accurate, heating and cooling speed
Degree is fast, steady, uniform, can save the quality time for user.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the perspective view of the utility model.
Fig. 3 is the circuit diagram in the utility model.
Fig. 4 is the work flow diagram in the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
Referring to Fig. 1-4, a kind of temperature/humidity verification box comprising cabinet 1, heating device 2, heating valve 4, refrigerating plant 5, system
Low temperature valve 7, the humidifier 8, temperature sensor 11, humidity sensor 12, blower 13, programmable logic controller (PLC) and PID controller.
The cabinet 1 is sequentially arranged at intervals with outer layer 1-1, middle layer 1-2 and internal layer 1-3, tool in internal layer 1-3 from outside to inside
There is operating room N, there is interchange channel M, middle layer 1-2 is using thermal insulation material (as protected between middle layer 1-2 and internal layer 1-3
Warm cotton etc.).
Internal layer 1-3 is equipped with several venthole 1-31, through several venthole 1- between interchange channel M and operating room N
31 connections.
Preferably, the venthole 1-31 is greater than 1mm and is less than 10mm.Since venthole 1-3 is too small, there are interior diplomacy
Throw-over rate is extremely low, and the time is too long, and venthole 1-3 is too big, when there is inside and outside exchange, uniformity difference and lifting temperature and humidity amplitude
Too big problem.Therefore venthole 1-31 is rationally controlled, and can reach the advantage balance of rate and low amplitude precise transformation.
Preferably, the middle layer 1-2 is using heat preservation cotton material.
Preferably, each venthole 1-31 is circumferentially uniformly distributed along the internal layer 1-3 outer wall.
The heating device 2 is by into connecting in hot air pipe 3 and the interchange channel M.The heating device 2 will be for after heating
Air (or gas) into hot air pipe 3 by entering in the M of interchange channel.
Specifically, which can be used existing structure or directly purchase installation, so do not repeat.
The heating valve 4 setting is described on hot air pipe 3；The heating valve 4 can be used for controlling described be in into hot air pipe 3 and beat
Open or close closed state.
The refrigerating plant 5 is by into connecting in cool air hose 6 and the interchange channel M.The refrigerating plant 5 will be for after cooling down
Air (or gas) into the cool air hose 6 by entering in the M of interchange channel.
Specifically, which can be used existing structure or directly purchase installation, so do not repeat.
The refrigeration valve 7 setting is described on cool air hose 6；The refrigeration valve 7 can be used for controlling described be in into cool air hose 6 and beat
Open or close closed state.
The humidifier 8 in humidification air hose 9 and the operating room 1-1 by connecting；The humidifier 8 can be used for humidify (or
Atomization) afterwards air (or gas) by into the humidification air hose 9 entrance interchange channel M in.
Specifically, which can be used existing structure or directly purchase installation, so do not repeat.
The humidifier valve 10, the humidifier valve 10 are arranged on the humidification air hose 9；The humidifier valve 10 is for controlling the humidification
Air hose 9 is in and opens or closes state.
The temperature sensor 11 is arranged in the operating room 1-1, and the temperature sensor 11 is for detecting the work
Environment temperature in the 1-1 of room.
The humidity sensor 12 is arranged in the operating room 1-1；The humidity sensor 12 is for detecting the work
Ambient humidity in the 1-1 of room.
The blower 13 is used to make to generate the air-flow circulated in the interchange channel M.
In the present embodiment, the blower 13 has 2.
Further, product placement rack 14, the temperature sensor 11 and humidity sensor is arranged in middle part in the operating room N
12 are arranged close to product placement rack 14.
Furthermore it is preferred that the described temperature sensor 11 and humidity sensor 12 are settable multiple.
Preferably, the blower 13 uses circulation fan.The circulation fan forms air ring for making in the M of interchange channel
Stream, while the velocity of liquid assets of air can be increased, improve the uniformity of aerial temperature and humidity.
The programmable logic controller (PLC) and humidifier valve 10, refrigeration valve 7, heating device 2, refrigerating plant 5, should add heating valve 4
Wet device 8, temperature sensor 11, humidity sensor 12, blower 13 and PID controller circuit connection.
The programmable logic controller (PLC) is used to pass the humidifier valve 10, heating valve 4, refrigeration valve 7, humidifier valve 10, temperature
The working conditions such as sensor 11, humidity sensor 12 and blower 13 are controlled.
In addition, in the present embodiment, the PID controller passes through computer (such as PC computer) and programmable logic controller (PLC)
Connection.
Specifically, which can be used PLC controller (i.e. Siemens Company's production of S7-200 model
S7-200PLC).
Specifically, the temperature sensor can be used LM35 model and (can be selected and given birth to by National Semiconductor
It produces).
Specifically, the temperature sensor can be used HM1500 model and (can be selected by Shanghai Fu Meisi Electronics Co., Ltd.
It is produced)
Further, there is installation cavity L between the outer layer 1-1 and middle layer 1-2；The heating device 2, refrigerating plant 5
And humidifier 8 is mounted in the installation cavity L.
Further, observation window 1-11 is provided on 1 outside of cabinet.
Further, control panel 1-12 is provided on 1 outside of cabinet.Control panel 1-12 and computer (electricity
Brain) connection.Control panel 1-12 is for showing, parameter input is set etc..
Specifically, the analog quantity I/O module of S7-300 (PLC) includes Analog input mModule and analog output module.
Preferably, the PID controller uses fuzzy controller.
In addition, Electric Appliance Cabinet 15 is provided in installation cavity L, for assembling each controller.
Its working principle is that: environment temperature and humidity (temperature and humidity) passes through 11 He of temperature sensor in the operating room 1-1
Humidity sensor 12 acquires in real time, and temperature and humidity (temperature and humidity) electric signal of its output is through the A/D (analog input of PLC
Module) conversion, and it is sent to computer digital animation, and computer is according to the deviation between humiture setting value and measured value and partially
Poor change rate, by the adjusting of PID controller, the output of computer is divided into heating, refrigeration, humidifies, opens by sending control signal
Blower signal is sent into PLC and works to control humidifier valve 10, heating valve 4, refrigeration valve 7 and blower 13 respectively, to realize to warm and humid
The control of degree.
And its specific workflow, reference can be made to Fig. 4, can work according to following below scheme:
S1 can open work by button switch or timer, be required according to product testing, set temperature and humidity value；
S2, the measured value (thermometric value) of temperature sensor and the temperature value of setting compare；When thermometric value is relatively low, if refrigeration
Valve pass then closes refrigeration valve in the open state and opens heating valve simultaneously, if when refrigeration valve pass is in close state Shi Zezhi
Connect unlatching heating valve；When thermometric value is higher, if refrigeration valve is opened when being in close state in refrigeration valve pass, and if when refrigeration valve is closed
It is then kept open in the open state；
S3, the measured value (hygrometric value) of humidity sensor and the humidity value of setting compare, when hygrometric value is relatively low, if humidification
Device pass then stays open shape in the open state, and humidifier work is opened if when humidifier is in close state；Work as survey
It is wet value it is higher when, when blower is in close state if open work, and if keeping it turning on work when blower is in the open state
Make.
Above-mentioned S2 and S3 real-time working, therefore the temperature and humidity in operating room 1-1 can be made to be maintained at set temperature and humidity
In range.
Utility model works feature and effect analysis are as follows:
First, since the middle layer 1-2 will not be distributed outward using cotton material, the heat in middle layer 1-2 is kept the temperature
It is lost, there is energy-saving effect；
Second, since the hot gas, cold air or the moisture that enter in interchange channel can uniformly mix, institute through blower work circulation
State in work indoor gas and the interchange channel that gas inside and outside each venthole of circumferential direction on internal layer through uniformly exchanging, the operating room
Interior air-flow temperature and humidity meeting even variation can prevent localized hyperthermia in operating room, topical hypothermia and local high humility problem, therefore
Its temperature sensor and the numerical value of humidity sensor detection are more acurrate, while the experimental condition of guarantee test product different location is equal
Even, test result is more acurrate, stable and reliable, simultaneously because the uniform low speed of gas in work indoor gas and the interchange channel
The advantages that exchange has temperature and humidity variation small, and amplitude is small, is conducive to by a small margin precisely lifting temperature and humidity；
Third is controlled temperature and humidity ratio, can form different temperature and humidity fields, and cabinet 1 due to being controlled using PID controller
Operating room 1-1 in moisture field be uniformly distributed, it is ensured that temperature uniformity less than 0.1 DEG C deviation requirement can meet product more
High-precision test condition.
4th, temperature and humidity is automatically controlled using PLC, it can be achieved that temperature and humidity persistence parameters balance, work when due to work
More stable and reliable, Temperature and Humidity Control is accurate, heating and cooling, low speed, steady, uniformly, can save the quality time for user.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (8)
1. a kind of temperature/humidity verification box, which is characterized in that including
Cabinet (1), the cabinet (1) are disposed with outer layer (1-1), middle layer (1-2) and internal layer (1-3) from outside to inside, this is interior
There is operating room (N) in layer (1-3), there is interchange channel (M) between the middle layer (1-2) and internal layer (1-3), the middle layer
(1-2) uses thermal insulation material, which is equipped with several ventholes (1-31)；
Heating device (2), the heating device (2) into hot air pipe (3) and the interchange channel (M) are interior by connecting；
Heating valve (4), the heating valve (4) setting is described on hot air pipe (3)；
Refrigerating plant (5), the refrigerating plant (5) into cool air hose (6) and the interchange channel (M) are interior by connecting；
Refrigeration valve (7), the refrigeration valve (7) setting is described on cool air hose (6)；
The humidifier (8), the humidifier (8) in humidification air hose (9) and the operating room (1-1) by connecting；
Humidifier valve (10), the humidifier valve (10) are arranged on the humidification air hose (9)；
Temperature sensor (11), the temperature sensor (11) setting is in the operating room (1-1)；
Humidity sensor (12), the humidity sensor (12) setting is in the operating room (1-1)；
Blower (13), the blower (13) are used to make to generate the air-flow circulated in the interchange channel (M)；
Programmable logic controller (PLC), the programmable logic controller (PLC) and heating valve (4), refrigeration valve (7), humidifier valve (10), temperature
Sensor (11), humidity sensor (12) and blower (13) are electrically connected.
2. a kind of temperature/humidity verification box as described in claim 1, it is characterised in that: it further include PID controller, the PID control
Device is electrically connected with programmable logic controller (PLC).
3. a kind of temperature/humidity verification box as claimed in claim 1 or 2, it is characterised in that: the middle layer (1-2) is using heat preservation
Cotton material.
4. a kind of temperature/humidity verification box as described in claim 1, it is characterised in that: each venthole (1-31) is along described interior
Layer (1-3) outer wall is circumferentially uniformly distributed.
5. a kind of temperature/humidity verification box as described in claim 1, it is characterised in that: the outer layer (1-1) and middle layer (1-
2) there is installation cavity (L) between；The heating device (2), refrigerating plant (5) and humidifier (8) are mounted on the installation cavity (L)
It is interior.
6. a kind of temperature/humidity verification box as described in claim 1, it is characterised in that: be provided with sight on cabinet (1) outside
Examine window (1-11).
7. a kind of temperature/humidity verification box as described in claim 1, it is characterised in that: be provided with control on cabinet (1) outside
Panel (1-12) processed.
8. a kind of temperature/humidity verification box as described in claim 1, it is characterised in that: the blower (13) uses circulation fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920028543.2U CN209296542U (en) | 2019-01-08 | 2019-01-08 | A kind of temperature/humidity verification box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920028543.2U CN209296542U (en) | 2019-01-08 | 2019-01-08 | A kind of temperature/humidity verification box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209296542U true CN209296542U (en) | 2019-08-23 |
Family
ID=67641870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920028543.2U Expired - Fee Related CN209296542U (en) | 2019-01-08 | 2019-01-08 | A kind of temperature/humidity verification box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209296542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533935A (en) * | 2021-07-12 | 2021-10-22 | 惠州西文思技术股份有限公司 | PCB high-low temperature test equipment |
-
2019
- 2019-01-08 CN CN201920028543.2U patent/CN209296542U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533935A (en) * | 2021-07-12 | 2021-10-22 | 惠州西文思技术股份有限公司 | PCB high-low temperature test equipment |
| CN113533935B (en) * | 2021-07-12 | 2024-02-23 | 惠州西文思技术股份有限公司 | PCB high-low temperature test equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190823 Termination date: 20200108 |