CN209173954U - A kind of novel constant tiny structure formula ventilation drug storage cabinet - Google Patents
A kind of novel constant tiny structure formula ventilation drug storage cabinet Download PDFInfo
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- CN209173954U CN209173954U CN201821944596.0U CN201821944596U CN209173954U CN 209173954 U CN209173954 U CN 209173954U CN 201821944596 U CN201821944596 U CN 201821944596U CN 209173954 U CN209173954 U CN 209173954U
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- storage cabinet
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- air draft
- detecting head
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Abstract
The utility model discloses a kind of novel constant tiny structure formula ventilation drug storage cabinets, including storage cabinet body and differential pressure pickup, it stores and is equipped with air draft storehouse at the top of cabinet body, the air exhaust passage in air draft storehouse is connected to the drug stock control cavity of storage cabinet body, air-exhausting duct is communicated on air draft storehouse, air draft is equipped with exhaust fan on storehouse；Differential pressure pickup is installed at the top of storage cabinet body, differential pressure pickup is electrically connected with exhaust fan, differential pressure pickup has first pressure detecting head and second pressure detecting head, and first pressure detecting head is placed in outside storage cabinet body, and second pressure detecting head is placed in drug stock control cavity；The drug stock control cavity bottom of storage cabinet body is fixed with actuation magnet A, is fixed with actuation magnet B on the inside of cabinet door.The utility model can allow ventilation drug storage cabinet to be in micro-vacuum state always, volatility, irritation, harmful poisonous gas will not drift out storage cabinet body, and drug or reagent bottle caused by negative pressure is excessive in cabinet will not be caused to generate passive type suction because exhaust air rate is excessive.
Description
Technical field
The utility model relates to a kind of drug storage cabinet more particularly to a kind of novel constant tiny structure formula ventilation drug stock controls
Cabinet.
Background technique
Ventilation medical cupboard is the storage cabinet that storage has volatile reagent, drug, sample in the furniture of laboratory, general to be referred to as
For medical cupboard of divulging information.The pump drainage air control system of existing ventilation medical cupboard mostly uses greatly switching regulator, electronic timing control formula in the market, preceding
Person, start and stop need the manually opened closing air draft of user of service, and the latter is the need for the time that timing means has been programmed according to setting
It is spaced circulating start and outage air draft.
Existing ventilation medical cupboard pump drainage air control system has the following disadvantages in the market:
1, (such as seven days small long holidays/winter and summer vacations) and evening during longer official holiday, switching regulator ventilation medical cupboard are wanted
Therefore always on air draft mode, i.e. waste electric power long-time air draft can cause the larger initiation drug/reagent of negative pressure in cabinet again
Acceleration volatilization or period for a long time close, volatility, irritation or corrosivity, poisonous gas constantly accumulate in cabinet even
It is elegant to offer for sale outside to external environment；
2, electronic timing control formula is with setting time interval and operation start and stop, except the setting of programming operation is that have centainly
Technical experience, air draft will not change because of open and close cabinet door when operation, therefore, open cabinet door and take drug/examination
When agent, when encountering the exhaust blower stopping intermittent phase, volatilization sex pill/reagent is possible to open with cabinet door and drift to cabinet outer space in cabinet
Between spread apart come.
Utility model content
Place in view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of novel constant tiny structures
Formula ventilation drug storage cabinet, can allow ventilation drug storage cabinet to be in micro-vacuum state, volatility, irritation, You Haiyou always
The gas of poison will not drift out storage cabinet body, and will not cause drug or reagent bottle caused by negative pressure is excessive in cabinet because exhaust air rate is excessive
Generate passive type suction.
The purpose of this utility model is achieved through the following technical solutions:
A kind of novel constant tiny structure formula ventilation drug storage cabinet, including storage cabinet body and differential pressure pickup, the storage
Interior of the cabinet has drug stock control cavity, and the storage cabinet body one side has the opening being connected with drug stock control cavity, institute
The opening for stating storage cabinet body is hinged with the cabinet door of closing opening.It stores and is equipped with air draft storehouse at the top of cabinet body, the air draft storehouse has
The air exhaust passage of air exhaust passage, the air draft storehouse is connected with the drug stock control cavity of storage cabinet body, is connected on the air draft storehouse
There is air-exhausting duct, exhaust fan is installed on the air draft storehouse；The differential pressure pickup is installed at the top of storage cabinet body, and the pressure difference passes
Sensor is electrically connected with exhaust fan, the differential pressure pickup have first pressure detecting head and second pressure detecting head, described first
Pressure probe is placed in outside storage cabinet body, and the second pressure detecting head is placed in drug stock control chamber at the top of storage cabinet body
In body；The drug stock control cavity bottom of the storage cabinet body is fixed with actuation magnet A, is fixed on the inside of the cabinet door and is attracted magnetic
The actuation magnet B of the mutual magnetic attracting of iron A.
In order to which the utility model is better achieved, the differential pressure pickup inside has threshold pressure differential range module, described
Exhaust fan has switch control module, the threshold pressure differential range module of the differential pressure pickup and the switch control module of exhaust fan
Electrical connection.
It is formed preferably, the cabinet door is that two door-plates are split, an actuation magnet B, institute is equipped on the inside of each door-plate
There are two the drug stock control cavity bottom fixations for stating storage cabinet body is attracted magnet A.
Preferably, the cabinet door is equipped with several observation windows.
Preferably, the observation window is fabricated by transparent glass or transparent plastic material.
The utility model compared with the prior art, have the following advantages that and the utility model has the advantages that
The utility model can allow ventilation drug storage cabinet to be in micro-vacuum state, volatility, irritation, You Haiyou always
The gas of poison will not drift out storage cabinet body, and will not cause drug or reagent bottle caused by negative pressure is excessive in cabinet because exhaust air rate is excessive
Generate passive type suction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Wherein, title corresponding to the appended drawing reference in attached drawing are as follows:
1- storage cabinet body, 2- cabinet door, 21- observation window, 3- actuation magnet A, 4- actuation magnet B, 5- air draft storehouse,
6- air-exhausting duct, 7- exhaust fan, 8- differential pressure pickup, 81- first pressure detecting head, 82- second pressure detecting head.
Specific embodiment
The utility model is described in further detail below with reference to embodiment:
The drug storage cabinet as shown in Figure 1, a kind of novel constant tiny structure formula is divulged information, including storage cabinet body 1 and pressure difference sensing
Device 8, storing has drug stock control cavity inside cabinet body 1, and storage 1 one side of cabinet body has to be opened with what drug stock control cavity was connected
Mouthful, the opening of storage cabinet body 1 is hinged with the cabinet door 2 of closing opening.It stores and is equipped with air draft storehouse 5 at the top of cabinet body 1, air draft storehouse 5 has
There is air exhaust passage, the air exhaust passage in air draft storehouse 5 is connected with the drug stock control cavity of storage cabinet body 1, the row of being communicated on air draft storehouse 5
Air hose 6 is equipped with exhaust fan 7 on air draft storehouse 5.Differential pressure pickup 8 is installed on 1 top of storage cabinet body, differential pressure pickup 8 and air draft
7 electrical connection of fan, differential pressure pickup 8 have first pressure detecting head 81 and second pressure detecting head 82, first pressure detecting head 81
It is placed in outside storage cabinet body 1, second pressure detecting head 82 is placed in drug stock control cavity at the top of storage cabinet body 1.Pressure difference
Having threshold pressure differential range module inside sensor 8, (the utility model threshold pressure differential range module can be set on a pressure difference
Limit value, pressure difference lower limit value or pressure difference upper and lower limits), exhaust fan 7 has switch control module, the pressure difference threshold of differential pressure pickup 8
Value range module is electrically connected with the switch control module of exhaust fan 7.7 continuously variable of exhaust fan of the utility model.This is practical
The novel diaphragm that can also will act directly on sensor in medical cupboard cabinet of divulging information with the pressure difference outside cabinet using differential pressure pickup
On, directly proportional micro-displacement is generated, the resistance of sensor is made to change, detects this variation with electronic circuit, and convert defeated
A standard signal (signal value of setting is defaulted as -3 ± 0.5Pa) for corresponding to this pressure passes to ventilation medical cupboard out
7 Acceleration of starting air draft of exhaust fan.
The threshold pressure differential range of the present embodiment is set as -3 ± 0.5Pa, when the air pressure that first pressure detecting head 81 is monitored
The pressure difference B-A between atmospheric pressure value B that value A and second pressure detecting head 82 are monitored is at -3.5~-2.5Pa (i.e. -3 ± 0.5Pa)
When in range, exhaust fan 7 stops working at this time；When the atmospheric pressure value A and second pressure that first pressure detecting head 81 is monitored are detected
When pressure difference B-A between the first 82 atmospheric pressure value B monitored is not in -3.5~-2.5Pa range (usually pressure difference B-A reaches -
When the 2.5Pa upper limit), the threshold pressure differential range module of differential pressure pickup 8 gives the unlatching letter of the switch control module of exhaust fan 7
Number, and when pressure difference B-A is restored in -3.5~-2.5Pa range, exhaust fan 7 just restarts work.To reach ventilation
Drug storage cabinet is in micro-vacuum state always, and volatility, irritation, harmful poisonous gas will not drift out storage cabinet body 1,
Drug or reagent bottle caused by negative pressure is excessive in cabinet will not be caused to generate passive type suction because exhaust air rate is excessive again.
As shown in Figure 1, the drug stock control cavity bottom of storage cabinet body 1, which is fixed with, is attracted magnet A 3, it is fixed on the inside of cabinet door 2
With the actuation magnet B 4 for being attracted the mutual magnetic attracting of magnet A 3.
Cabinet door 2, which is that two door-plates are split, to be formed, and an actuation magnet B 4 is equipped on the inside of each door-plate, stores the medicine of cabinet body 1
Product storage cavity bottom is fixed, and there are two be attracted magnet A 3.Cabinet door 2 is equipped with several observation windows 21.The present embodiment is preferably seen
Window 21 is examined to be fabricated by transparent glass or transparent plastic material.
In use, placing volatile reagent, drug or sample in the drug stock control cavity of storage cabinet body 1, then close
Cabinet door 2 is closed, 2 sealing performance of cabinet door is fine, can prevent the volatilization of reagent, drug or sample, while cabinet door 2 is two door-plates pair
It opens, an actuation magnet B 4 is equipped on the inside of each door-plate, the drug stock control cavity bottom of storage cabinet body 1 is fixed, and there are two inhale
Magnet A 3 is closed, is acted on by being attracted magnet B 4 and being attracted the actuation of magnet A 3 to increase the airtightness of the closing storage cabinet body 1 of cabinet door 2
Can, while cabinet door 2 can be prevented to be misused and open, interior reagent, drug or sample can be observed by observation window 21
Store situation.After opening the taking-up of cabinet door 2 reagent, drug or sample, cabinet door 2 is turned off, starting exhaust fan 7 will store cabinet body 1
Drug stock control cavity is pumped into subnormal ambient, and differential pressure pickup 8 has first pressure detecting head 81 and second pressure detecting head 82, the
One pressure probe 81 is placed in 1 outside of storage cabinet body (the atmospheric pressure value A outside the monitoring storage cabinet body 1 of first pressure detecting head 81),
Second pressure detecting head 82 is placed in drug stock control cavity at the top of storage cabinet body 1, the monitoring storage of second pressure detecting head 82
The atmospheric pressure value B inside cabinet body 1 is deposited, the drug stock control cavity for storing cabinet body 1 is pumped into subnormal ambient when due to using, then atmospheric pressure value
B is less than atmospheric pressure value A.There is threshold pressure differential range module, the threshold pressure differential range of the present embodiment is arranged inside differential pressure pickup 8
For -3 ± 0.5Pa, i.e. the upper limit value of threshold pressure differential range is -2.5Pa, and lower limit value is -3.5Pa, 81 institute of first pressure detecting head
The pressure difference B-A between atmospheric pressure value B that the atmospheric pressure value A and second pressure detecting head 82 of monitoring are monitored.Continue to start exhaust fan 7,
Pressure between the atmospheric pressure value B that the atmospheric pressure value A monitored of first pressure detecting head 81 and second pressure detecting head 82 are monitored
When poor B-A is located in -3.5~-2.5Pa range, exhaust fan 7 stops.Meanwhile first pressure detecting head 81 and second pressure detect
First 82 continue to monitor atmospheric pressure value, when the atmospheric pressure value A that first pressure detecting head 81 is monitored is monitored with second pressure detecting head 82
Atmospheric pressure value B between pressure difference B-A be greater than the -2.5Pa upper limit when, the threshold pressure differential range module of differential pressure pickup 8 gives air draft
The open signal of the switch control module of fan 7, and when pressure difference B-A is restored in -3.5~-2.5Pa range, exhaust fan 7 is
Restart work.Micro-vacuum state is in always to reach ventilation drug storage cabinet, it is volatility, irritation, harmful poisonous
Gas will not drift out storage cabinet body 1, and drug or reagent bottle caused by negative pressure is excessive in cabinet will not be caused because exhaust air rate is excessive
Generate passive type suction.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (5)
- The drug storage cabinet 1. a kind of novel constant tiny structure formula is divulged information, including storage cabinet body (1) and differential pressure pickup (8), it is described Storing has drug stock control cavity inside cabinet body (1), storage cabinet body (1) one side has to be connected with drug stock control cavity Opening, it is described storage cabinet body (1) opening be hinged with closing opening cabinet door (2), it is characterised in that: the storage cabinet body (1) top is equipped with air draft storehouse (5), and the air draft storehouse (5) has air exhaust passage, the air exhaust passage of the air draft storehouse (5) and storage The drug stock control cavity of cabinet body (1) is connected, and is communicated with air-exhausting duct (6) on the air draft storehouse (5), pacifies on the air draft storehouse (5) Equipped with exhaust fan (7)；The differential pressure pickup (8) is installed at the top of storage cabinet body (1), the differential pressure pickup (8) and air draft (7) electrical connection is fanned, the differential pressure pickup (8) has first pressure detecting head (81) and second pressure detecting head (82), described First pressure detecting head (81) is placed in storage cabinet body (1) outside, and the second pressure detecting head (82) is through storage cabinet body (1) top Portion is placed in drug stock control cavity；The drug stock control cavity bottom of storage cabinet body (1), which is fixed with, is attracted magnet A (3), institute State the actuation magnet B (4) for being fixed on the inside of cabinet door (2) and being attracted magnet A (3) mutually magnetic attracting.
- The drug storage cabinet 2. a kind of novel constant tiny structure formula described in accordance with the claim 1 is divulged information, it is characterised in that: the pressure There is threshold pressure differential range module, the exhaust fan (7) has switch control module, and the pressure difference passes inside gap sensor (8) The threshold pressure differential range module of sensor (8) is electrically connected with the switch control module of exhaust fan (7).
- The drug storage cabinet 3. a kind of novel constant tiny structure formula described in accordance with the claim 1 is divulged information, it is characterised in that: the cabinet Door (2), which is that two door-plates are split, to be formed, and an actuation magnet B (4), the medicine of storage cabinet body (1) are equipped on the inside of each door-plate Product storage cavity bottom is fixed, and there are two be attracted magnet A (3).
- 4. according to a kind of ventilation drug storage cabinet of novel constant tiny structure formula described in claim 1 or 3, it is characterised in that: institute Cabinet door (2) are stated equipped with several observation windows (21).
- 5. a kind of novel constant tiny structure formula ventilation drug storage cabinet according to claim 4, it is characterised in that: the sight Window (21) is examined to be fabricated by transparent glass or transparent plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821944596.0U CN209173954U (en) | 2018-11-24 | 2018-11-24 | A kind of novel constant tiny structure formula ventilation drug storage cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821944596.0U CN209173954U (en) | 2018-11-24 | 2018-11-24 | A kind of novel constant tiny structure formula ventilation drug storage cabinet |
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| Publication Number | Publication Date |
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| CN209173954U true CN209173954U (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821944596.0U Active CN209173954U (en) | 2018-11-24 | 2018-11-24 | A kind of novel constant tiny structure formula ventilation drug storage cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396693A (en) * | 2021-12-28 | 2022-04-26 | 中国原子能科学研究院 | Micro-negative pressure cabinet ventilation system and leakage detection method thereof |
-
2018
- 2018-11-24 CN CN201821944596.0U patent/CN209173954U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396693A (en) * | 2021-12-28 | 2022-04-26 | 中国原子能科学研究院 | Micro-negative pressure cabinet ventilation system and leakage detection method thereof |
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