CN108676711A - A kind of borne bacteria sampler of Detection of Air Quality - Google Patents
A kind of borne bacteria sampler of Detection of Air Quality Download PDFInfo
- Publication number
- CN108676711A CN108676711A CN201810720494.9A CN201810720494A CN108676711A CN 108676711 A CN108676711 A CN 108676711A CN 201810720494 A CN201810720494 A CN 201810720494A CN 108676711 A CN108676711 A CN 108676711A
- Authority
- CN
- China
- Prior art keywords
- air
- detection
- air quality
- suction ventilator
- top surface
- Prior art date
- 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
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/22—Transparent or translucent parts
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/34—Internal compartments or partitions
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/04—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus by injection or suction, e.g. using pipettes, syringes, needles
Abstract
The present invention provides a kind of borne bacteria sampler of Detection of Air Quality, including pedestal, and suction ventilator shunts aspiration channel, head cover, transparent panel, sampling head, filtering plug, top sealing plate, slot, knob and partition board；The pedestal is rectangle cavity holder structure, and the electrical appliance kit that operation panel is carried at one is equipped on the left of its top surface；The top surface of the pedestal is equipped with suction ventilator at one by vertical mode, and this suction ventilator realizes electric connection by being electrically connected line with electrical appliance kit；The top surface inlet scoop of the suction ventilator is connected with the air inlet cabin of circle cavity configuration at one, since there are four station chambers for device tool, it therefore can be under controlled working environment, realize that the air-breathing of single or multiple station is collected, multistation observation can be achieved in microorganism adsorption culture in air, according to the detection means that the prior art inhales the microorganism having in station chamber gas, comparison is obtained.
Description
Technical field
The invention belongs to sample gas harvester technical fields, more specifically, more particularly to a kind of air quality inspection
The borne bacteria sampler of survey.
Background technology
Aerial bacterioplankton sampler is generally designed according to Anderson collision theory, and the getter device of instrument passes through air more
Hole sampling head sucks, and on the culture dish for striking Φ 90mm, the microorganism in air is " trapped " on agar medium.It should
Sampler is widely used in pharmaceuticals industry, food industry, beverage tap water, medicine inspecting institute, health and epidemic prevention, hospital, public place etc.
In relation to industry and department.
The present inventor is found that the similar patent in terms of tree injection during patent searching, for example, Shen
Please number be：A kind of borne bacteria sampler involved in CN201720210235.2, is described as substantially：Including shell, culture dish
Pallet and sampling head are provided with partition board in the shell, and enclosure interior are divided into sampling cavity and storing bin by partition board, institute
It states and is provided with air-introduced machine in sampling cavity, the output end of the air-introduced machine is connected with processor, and the input terminal of the air-introduced machine passes through
The center of culture dish pallet is provided with culture dish on the culture dish pallet, and the sampling head is connected with culture dish spiral,
The periphery of the culture dish and culture dish pallet is in sealed set, and sampling head bracket is provided in the storing bin.
Based on above-mentioned, the inventors discovered that, borne bacteria sampler in the existing air similar to above structure, mainly by one
A culture dish is constituted, and can not achieve the comparative detection of more acquisition formulas, and collection head is after a period of use, surface has largely
Accumulate bacterium to generate, when pipette samples gas, has a certain amount of accumulation bacterium from air using collection head and enter culture dish
In, it influences to detect quality.
Then, in view of this, being studied improvement for existing structure and missing, providing four stations of one kind having comparison
Property Detection of Air Quality borne bacteria sampler, to achieve the purpose that with more more practical value.
Invention content
In order to solve the above technical problem, the present invention provides a kind of borne bacteria samplers of Detection of Air Quality, with solution
Borne bacteria sampler in the certainly above-mentioned existing air similar to above structure is mainly made of a culture dish, can not achieve more
The comparative detection of acquisition formula, and collection head is after a period of use, surface has a large amount of accumulation bacteriums and generates, and utilizes collection head
The problem of from air when pipette samples gas, having a certain amount of accumulation bacterium and enter in culture dish, influencing to detect quality.
The purpose and effect of the borne bacteria sampler of Detection of Air Quality of the present invention, are reached by technological means in detail below
At：
A kind of borne bacteria sampler of Detection of Air Quality, including pedestal, suction ventilator shunt aspiration channel, electrical appliance kit, valve
Door, enter the wind cabin, operation panel, sterilize seat, culture dish, head cover, transparent panel, sampling head, filtering plug, top sealing plate, slot, knob and
Partition board；The pedestal is rectangle cavity holder structure, and the electrical appliance kit that operation panel is carried at one is equipped on the left of its top surface；
The top surface of the pedestal is equipped with suction ventilator at one by vertical mode, and this suction ventilator is real with electrical appliance kit by being electrically connected line
Now it is electrically connected；The top surface inlet scoop of the suction ventilator is connected with the air inlet cabin of circle cavity configuration at one, and this air inlet cabin is outer
Collarette shape, which is evenly distributed with to run through, four shunting aspiration channels, and has also extended through one with valvular on these shunting aspiration channels
Shunt aspiration channel；The shunting aspiration channel is the support tube of hard material material, their top surface is run through and is connected at one round again
The culture dish of cavity configuration, and the head cover that knob is carried at one is combined with further through the mode of threaded connection in the face of this culture dish；
The periphery of the culture dish also annular sleeve is equipped with the sterilization seat of annulus cavity configuration at one, and top surface of this sterilization seat passes through annular slab
The top sealing plate of structure is closed, and is equipped with a circle ultraviolet germicidal lamp in sterilization seat, this bactericidal lamp is by being electrically connected line
The operation button realized and be electrically connected with electrical appliance kit, and be electrically connected on operation panel realizes switch control.
Further, the air inlet cabin is annulus drum chamber structure, shunts aspiration channel everywhere in being bent upwards pattern through matching
It closes in periphery, and enters the wind the bottom end in cabin and the inlet scoop realization perforation connection of suction ventilator.
Further, the top sealing plate that the sterilization seat top surface is used for sealing is rubber skin material, and it is uniformly opened up above
There is the slot of curved slot arrangement everywhere.
Further, it is divided into four chambers, and this by being equipped with crossed grid partition board at one in the circle inner cavity of the culture dish
Four chambers are realized with bottom side through the four shunting aspiration channels entered runs through corresponding one by one.
Further, a sampling head has been also extended through on the head cover.
Further, the terminal of the sampling head is also equipped with filtering plug at one, and this filtering plug is taper header structure.
Further, the top surface of the head cover is further opened with the mounting hole of sector structure everywhere, and in these mounting holes
It is inside also inlaid with transparent panel at one, and the sampling head of tubular structure runs through trend in these transparent panels.
Further, dense air admission hole is offered on the filtering plug, and these air admission holes are also the small cone of outer imperial palace
Shape pore structure.
Compared with prior art, the present invention has the advantages that：
The air acquisition structure of this structure has carried out the improvement in structure on the basis of existing air extract function,
The disinfection structure being equipped on the outside of culture dish, can periodically sterilize the sampling head of device, therefore have preferable sterilizing function,
And the end inlet scoop of suction ventilator used by this structure is connected with air inlet cabin at one, separating four using this air inlet cabin is bent upwards
Aspiration channel, and the top surface of this four aspiration channels run through connection culture dish by the demarcation strip of cross structure, be divided into
Four small chambers, this four correspond into aspiration channel in the chamber formed at this four, make the isolated culture of original technology
Ware forms four work station points, and on this four air-suction ducts, is provided with controlled valve, therefore can be in controlled building ring
Under border, realize that the air-breathing of single or multiple station is collected, multistation observation can be achieved in the microorganism adsorption culture in air, according to
The detection means that the prior art inhales the microorganism having in station chamber gas, obtains comparison.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is culture dish internal structure schematic diagram when the present invention removes head cover.
Fig. 3 is bottom views structural schematic diagram of the present invention.
Fig. 4 is main view planar structure schematic diagram of the present invention.
Fig. 5 is top plan view structural schematic diagram of the present invention.
Fig. 6 is present invention air inlet cabin and four isocon connection relationship diagrams.
Fig. 7 is sampling head interior tapered pore structure schematic diagram of the present invention.
Fig. 8 is partial cutaway germicidal tube L schematic view of the mounting position of the present invention.
In figure, the correspondence of component names and accompanying drawing number is：
Pedestal -1, suction ventilator -2 shunt aspiration channel -3, electrical appliance kit -4, and valve -5 enters the wind cabin -6, operating surface
Plate -7 sterilizes seat -8, culture dish -9, head cover -10, transparent panel -11, sampling head -12, filtering plug -1201, closedtop
Plate -13, slot -1301, knob -14, partition board -15.
Specific implementation mode
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for
Illustrate the present invention, but cannot be used for limiting the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term "upper",
The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connects, and can also be electrical connection；It can be directly connected, it can also be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment：
As shown in attached drawing 1 to attached drawing 8：
The present invention provides a kind of borne bacteria sampler of Detection of Air Quality, including pedestal 1, and suction ventilator 2 shunts air draught
Pipe 3, electrical appliance kit 4, valve 5, air inlet cabin 6, operation panel 7, sterilization seat 8, culture dish 9, head cover 10, transparent panel 11, sampling head 12,
Filtering plug 1201, top sealing plate 13, slot 1301, knob 14 and partition board 15；The pedestal 1 is rectangle cavity holder structure, and
The electrical appliance kit 4 that operation panel 7 is carried at one is installed on the left of its top surface；The top surface of the pedestal 1 is equipped with by vertical mode
Suction ventilator 2 at one, and this suction ventilator 2 realizes electric connection by being electrically connected line with electrical appliance kit 4；The top surface of the suction ventilator 2
Inlet scoop is connected with the air inlet cabin 6 of circle cavity configuration at one, and the peripheral annular in this air inlet cabin 6 is uniformly distributed through there is four shuntings to inhale
Air hose 3, and also extend through a shunting aspiration channel 3 for carrying valve 5 on these shunting aspiration channels 3；The shunting is inhaled
Air hose 3 is the support tube of hard material material, and the culture dish 9 of circle cavity configuration at one is run through and be connected in their top surface again, and
The face of this culture dish 9 is combined with the head cover 10 that knob 14 is carried at one further through the mode of threaded connection；Outside the culture dish 9
Enclose the sterilization seat 8 that also annular sleeve is equipped with annulus cavity configuration at one, and the top sealing plate that top surface of this sterilization seat 8 passes through annular harden structure
13 closings, and a circle ultraviolet germicidal lamp is installed in sterilization seat 8, this bactericidal lamp is by being electrically connected line and electrical appliance kit 4
The operation button realized and be electrically connected, and be electrically connected on operation panel 7 realizes switch control.
Wherein, the air inlet cabin 6 is annulus drum chamber structure, shunts aspiration channel 3 everywhere in pattern is bent upwards and runs through cooperation
It in periphery, and enters the wind the bottom end in cabin 6 and the inlet scoop of suction ventilator 2 and realizes perforation connection, four pipelines are carried by suction ventilator at one
Reasonable for structure for pressure of inspiration(Pi), at low cost, structure composition is good, and can be by almost consistent suction, and structure is more reasonable.
Wherein, the top sealing plate 13 that 8 top surface of the sterilization seat is used for sealing is rubber skin material, and it is uniformly offered above
It is convenient for sampling head 12 to be inserted into sterilization seat 8 slot 1301 for carrying out sterilization operation everywhere.
Wherein, divided for four chambers by being equipped with crossed grid partition board 15 at one in the circle inner cavity of the culture dish 9, and this four
A chamber is realized with bottom side through the four shunting aspiration channels 3 entered runs through corresponding one by one, it will thus be seen that this structure states culture
Ware 9 is no longer a single cultivation chamber, but four cultivation chambers, four cultivation stations is formed, in suction ventilator 2 and valve 5
Effect is lower and realizes that the air-breathing of single or multiple station is collected, and multistation observation can be achieved in the microorganism adsorption culture in air,
According to the detection means that the prior art inhales the microorganism having in station chamber gas, comparison is obtained.
Wherein, a sampling head 12 has been also extended through on the head cover 10, the inner end portion of this sampling head 12 is hose
Material sucks extraneous gas, into corresponding station chamber.
Wherein, the terminal of the sampling head 12 is also equipped with the filtering plug 1201 with filtering function at one, and this mistake
The taper header structure that filter plug 1201 slides for ease of dust from its surface.
Wherein, the top surface of the head cover 10 is further opened with the mounting hole of sector structure everywhere, and in these mounting holes
It is also inlaid at one convenient for the transparent panel 11 on the inside of appearance, and the sampling head 12 of tubular structure runs through trend in these transparent panels
11。
Wherein, dense air admission hole is offered on the filtering plug 1201, and these air admission holes are also the small cone of outer imperial palace
Shape pore structure, the filtering plug 1201 of this structure can make the gas for being pumped into station intracavitary, and less fast to flow backwards discharge, structure is more
Adduction is managed.
The specifically used mode of the present embodiment and effect：
The bundle pin hole of leather plug formula structure is inlaid on the transparent panel 11 of device, it would be desirable to the chemical reaction liquid or specific of training
Gas is squeezed by these pin holes in corresponding working chamber, and before device use, push panel 7 is screwed off from culture dish 9
On related switch button, make as shown in figure 8, the germicidal tube L sterilized in seat 8 is powered on, sampling head 12 passed through into slot
1301 are inserted into progress sterilizing in sterilization seat 8, and the related switch button on push panel 7 makes 2 energization work of suction ventilator
Make, the corresponding region valve 5 shunted at four on aspiration channel 3 is opened or closed, under the action of suction, by gas by sampling head
12 suckings enter the station intracavitary that 9 top of culture dish is separated by partition board 15, the related switch on shutoff operation panel 7
Button makes the power-off stalling of suction ventilator 2, is detected, can be in controlled working environment since there are four station chambers for device tool
Under, realize that the air-breathing of single or multiple station is collected, multistation observation can be achieved in the microorganism adsorption culture in air, according to existing
The detection means for having technology to inhale the microorganism having in station chamber gas, obtains comparison.
It should be noted that the station chamber of the present apparatus only illustrates its tool, there are four different station cavity configurations, as it
How to detect, from the point of view of documents, also there is no open detection means, it appears that it is the detection means of comparative maturity, because
This is unrelated with structure, need not disclose herein, therefore no longer otherwise indicated.
The embodiment of the present invention provides for the sake of example and description, and is not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing
It is and to make those skilled in the art to more preferably illustrate the principle of the present invention and practical application to select and describe embodiment
It will be appreciated that various embodiments with various modifications of the present invention to design suitable for special-purpose.
Claims (8)
1. a kind of borne bacteria sampler of Detection of Air Quality, it is characterised in that：The flcating germ of the Detection of Air Quality is adopted
Sample device includes pedestal (1), suction ventilator (2), shunting aspiration channel (3), electrical appliance kit (4), valve (5), air inlet cabin (6), operation panel
(7), sterilization seat (8), culture dish (9), head cover (10), transparent panel (11), sampling head (12), filtering plug (1201), top sealing plate
(13), slot (1301), knob (14) and partition board (15)；The pedestal (1) is rectangle cavity holder structure, and on its top surface left side
Side is equipped with the electrical appliance kit (4) that operation panel (7) is carried at one；The top surface of the pedestal (1) is equipped with one by vertical mode
Locate suction ventilator (2), and this suction ventilator (2) realizes electric connection by being electrically connected line with electrical appliance kit (4)；The suction ventilator (2)
Top surface inlet scoop be connected with the air inlet cabin (6) of circle cavity configuration at one, and peripheral annular of this air inlet cabin (6) is uniformly distributed through having
Four shunting aspiration channels (3), and also extend through a shunting with valve (5) on these shunting aspiration channels (3) and inhale
Air hose (3)；The shunting aspiration channel (3) is the support tube of hard material material, their top surface is run through and is connected at one round again
The culture dish (9) of cavity configuration, and be combined at one further through the mode of threaded connection in the face of this culture dish (9) and carry knob
(14) head cover (10)；The periphery also annular sleeve of the culture dish (9) is equipped with the sterilization seat (8) of annulus cavity configuration at one, and this
The top surface for sterilizing seat (8) is closed by the top sealing plate (13) of annular harden structure, and it is ultraviolet in sterilization seat (8) to be equipped with a circle
Line bactericidal lamp, this bactericidal lamp realizes electric connection by being electrically connected line with electrical appliance kit (4), and electrically connects on operation panel (7)
The operation button connect realizes switch control.
2. the borne bacteria sampler of Detection of Air Quality as described in claim 1, it is characterised in that：The air inlet cabin (6) is
Annulus drum chamber structure shunts aspiration channel (3) in pattern is bent upwards and runs through cooperation in periphery, and enters the wind the bottom end of cabin (6) everywhere
Perforation connection is realized with the inlet scoop of suction ventilator (2).
3. the borne bacteria sampler of Detection of Air Quality as described in claim 1, it is characterised in that：Sterilization seat (8) top
The top sealing plate (13) that face is used for sealing is rubber skin material, and it uniformly offers the slot of curved slot arrangement everywhere above
(1301)。
4. the borne bacteria sampler of Detection of Air Quality as described in claim 1, it is characterised in that：The culture dish (9)
It is divided into four chambers by being equipped with crossed grid partition board (15) at one in circle inner cavity, and this four chambers run through four entered with bottom side
It shunts aspiration channel (3) and realizes and run through correspondence one by one.
5. the borne bacteria sampler of Detection of Air Quality as described in claim 1, it is characterised in that：On the head cover (10)
A sampling head (12) is also extended through.
6. the borne bacteria sampler of Detection of Air Quality as described in claim 1, it is characterised in that：The sampling head (12)
Terminal is also equipped with filtering plug at one (1201), and this filtering plug (1201) is taper header structure.
7. the borne bacteria sampler of Detection of Air Quality as described in claim 1, it is characterised in that：The top of the head cover (10)
Face is further opened with the mounting hole of sector structure everywhere, and transparent panel at one (11) is also inlaid in these mounting holes, and
The sampling head (12) of tubular structure is through trend in these transparent panels (11).
8. the borne bacteria sampler of Detection of Air Quality as described in claim 1, it is characterised in that：The filtering plug (1201)
On offer dense air admission hole, and these air admission holes are also the small taper pore structure of outer imperial palace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810720494.9A CN108676711A (en) | 2018-07-02 | 2018-07-02 | A kind of borne bacteria sampler of Detection of Air Quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810720494.9A CN108676711A (en) | 2018-07-02 | 2018-07-02 | A kind of borne bacteria sampler of Detection of Air Quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108676711A true CN108676711A (en) | 2018-10-19 |
Family
ID=63813009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810720494.9A Withdrawn CN108676711A (en) | 2018-07-02 | 2018-07-02 | A kind of borne bacteria sampler of Detection of Air Quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108676711A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117538A (en) * | 2019-05-29 | 2019-08-13 | 新乡医学院 | A kind of cell culture sampling apparatus |
| CN113117126A (en) * | 2021-04-21 | 2021-07-16 | 和鸿电气股份有限公司 | Placed UV lamp sterilization system in plant |
| CN113311104A (en) * | 2021-04-20 | 2021-08-27 | 安徽民安检验检测技术有限公司 | Agricultural product culture detection equipment |
| CN113932372A (en) * | 2021-10-11 | 2022-01-14 | 四川科源暖通设备工程有限公司 | Be used for air conditioner maintenance fault detection device |
-
2018
- 2018-07-02 CN CN201810720494.9A patent/CN108676711A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117538A (en) * | 2019-05-29 | 2019-08-13 | 新乡医学院 | A kind of cell culture sampling apparatus |
| CN113311104A (en) * | 2021-04-20 | 2021-08-27 | 安徽民安检验检测技术有限公司 | Agricultural product culture detection equipment |
| CN113117126A (en) * | 2021-04-21 | 2021-07-16 | 和鸿电气股份有限公司 | Placed UV lamp sterilization system in plant |
| CN113932372A (en) * | 2021-10-11 | 2022-01-14 | 四川科源暖通设备工程有限公司 | Be used for air conditioner maintenance fault detection device |
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Application publication date: 20181019 |