CN115228196A - Cold and hot air current channel system of totally closed computer lab - Google Patents
Cold and hot air current channel system of totally closed computer lab Download PDFInfo
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- CN115228196A CN115228196A CN202210806485.8A CN202210806485A CN115228196A CN 115228196 A CN115228196 A CN 115228196A CN 202210806485 A CN202210806485 A CN 202210806485A CN 115228196 A CN115228196 A CN 115228196A
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- vent
- machine room
- channel system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ventilation (AREA)
Abstract
The invention belongs to the technical field of machine room heat dissipation, and particularly relates to a fully-closed machine room cold and hot airflow channel system which comprises a machine room main body, wherein one side of the machine room main body is provided with a first air vent and a second air vent, filtering mechanisms are arranged in the first air vent and the second air vent, an air exchange component communicated with the first air vent is arranged on the inner wall of the top of the machine room main body, and an exhaust component communicated with the second air vent is fixedly arranged on the inner wall of one side of each of the two filtering mechanisms of the air exchange component. According to the invention, pressure difference can be generated between the inside and the outside of the machine room main body through the extrusion mechanism, at the moment, the outside cold air and the inside cold air of the machine room main body circulate, and the filtering mechanism can be automatically cleaned through airflow in the process, so that manual participation is not needed, and the machine room is convenient.
Description
Technical Field
The invention relates to the technical field of heat dissipation of machine rooms, in particular to a cold and hot airflow channel system of a totally-enclosed machine room.
Background
At present, in the IT industry, a machine room generally refers to telecommunications, internet, mobile, two-wire, electric power, government or enterprise, etc., a place for storing servers and providing IT services for users and employees is usually provided with various servers and small machines, such as IBM small machine, HP small machine, SUN small machine, etc., the temperature and humidity and antistatic measures of the machine room are strictly required, non-professional project personnel can not enter the machine room, and the servers in the machine room run many services, such as mobile multimedia messages, short messages, call services, etc. When the existing heat dissipation and ventilation device is used, in order to prevent dust from entering a machine room, a filter screen is usually required to be installed at an air inlet, but the filter screen needs to be manually cleaned regularly after being used for a long time to maintain the filtering effect, and therefore, the fully-closed machine room cold and hot airflow channel system is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a fully-closed machine room cold and hot airflow channel system.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a cold and hot air current passageway system of totally closed computer lab, includes the computer lab main part, blow vent one and blow vent two have been seted up to one side of computer lab main part, all install filtering mechanism in blow vent one and the blow vent two, install the subassembly of taking a breath that is linked together with blow vent one on the top inner wall of computer lab main part, the subassembly of taking a breath is located two filtering mechanism's one side inner walls fixed mounting has the exhaust subassembly that communicates with blow vent two.
Preferably, filtering mechanism includes and establishes the installation department on the filter screen with filter screen and fixed cover, the filter screen and blow vent one and the inner wall clearance fit of blow vent two, and fixed cover is equipped with the sealing washer with blow vent one and two inner wall interference fit of blow vent on the filter screen.
Preferably, the subassembly of taking a breath includes two guide arms and electric putter of fixed mounting on computer lab main part top inner wall, the guide arm is L shape, and slidable mounting has same extrusion mechanism on two guide arms, the both sides of extrusion mechanism are the opening setting, and the lateral wall fixed connection of one side of extrusion mechanism and computer lab main part to blow vent one is linked together with extrusion mechanism, one side fixed mounting that extrusion mechanism kept away from blow vent one has the push pedal, electric putter's output pole and push pedal fixed connection.
Preferably, the extrusion mechanism includes the bellows, the both sides of bellows fixed mounting respectively has installing frame one and installing frame two, installing frame one and the lateral wall fixed connection of computer lab main part, installing frame two and push pedal fixed connection, two guide arms all with installing frame fixed connection, two slip covers of installing frame are established on two guide arms, the both sides fixed mounting of bellows is a plurality of stop collars of linear distribution, and a plurality of stop collars slip cover respectively and establish on corresponding guide arm.
Preferably, the inner side and the outer side of the corrugated pipe are coated with a heat conducting coating.
Preferably, the exhaust subassembly is including the installation cover, be equipped with installation cover and air inlet on the installation cover, the air inlet is located the top of gas vent, all install one-way circulation mechanism in gas vent and the air inlet, and the one-way circulation mechanism in gas vent and the air inlet is the mirror image and distributes.
Preferably, one-way circulation mechanism includes the support frame of fretwork, be equipped with two cylinders on the support frame, two cylinders all run through the support frame and with support frame sliding connection, two columns with one end fixed mounting have same shutoff board, and the equal fixed mounting in one end that shutoff board was kept away from to two cylinders has the baffle, fixed mounting has the spring on the cylinder of same slip cap between baffle and the support frame.
Preferably, the inner walls of the exhaust port and the air inlet are in interference fit with the outer sides of the supporting frames, and the inner walls of the exhaust port and the air inlet are in transition fit with the outer sides of the blocking plates.
Preferably, the first air vent and the second air vent are obliquely arranged, and the openings of the first air vent and the second air vent, which are positioned on the outer side, are lower than the opening positioned in the machine room main body.
Compared with the prior art, the invention has the beneficial effects that:
1. when the electric elements in the machine room main body and the machine room main body are cooled, the corrugated pipe can be driven to compress and extend through the extension and retraction of the electric push rod, pressure difference can occur between air pressure in the machine room main body and air pressure outside the machine room main body in the process of compression and extension of the corrugated pipe, when the internal pressure of the machine room main body is smaller than the external pressure, external cold air enters the mounting cover through the second vent and finally enters the machine room main body through the air inlet, and in the process, the filtering mechanism positioned in the second vent can filter the cold air entering the machine room main body from the outside;
2. when the internal pressure of the machine room main body is greater than the external pressure, hot air in the machine room main body enters the mounting cover through the air outlet and is finally discharged through the second air vent, in the process, the hot air can back flush the filtering mechanism in the second air vent, so that the filtering mechanism in the second air vent always keeps a better filtering effect, and when the internal external pressure of the machine room main body is consistent, the air outlet and the air inlet are blocked by the corresponding one-way circulation mechanisms, and at the moment, the machine room main body is completely in a closed state.
Drawings
FIG. 1 is a schematic view of the overall structure of a fully-enclosed machine room cold and hot airflow channel system provided by the invention;
FIG. 2 is a side sectional view of a fully closed machine room cold and hot airflow channel system according to the present invention;
FIG. 3 is a schematic structural diagram of a filtering mechanism in a fully-closed machine room cold and hot airflow channel system according to the present invention;
fig. 4 is a schematic structural view of a ventilation assembly in a fully-closed machine room cold and hot airflow channel system provided by the invention;
fig. 5 is a partial side sectional view of a ventilation assembly in a fully closed machine room cold and hot airflow channel system according to the present invention;
FIG. 6 is a schematic structural diagram of an exhaust assembly in a fully-closed machine room cold and hot airflow channel system according to the present invention;
FIG. 7 is an exploded view of an exhaust assembly in a fully enclosed machine room cold and hot airflow channel system according to the present invention;
fig. 8 is a side sectional view of a one-way circulating mechanism in a fully closed machine room cold and hot air flow channel system.
In the figure: 1. a machine room main body; 11. a first air vent; 12. a second air vent; 2. a filtering mechanism; 21. a filter screen; 22. an installation part; 3. a ventilation assembly; 31. a guide bar; 32. an extrusion mechanism; 321. installing a first frame; 322. mounting a second frame; 323. a bellows; 324. a limiting sleeve; 33. an electric push rod; 34. pushing the plate; 4. an exhaust assembly; 41. mounting a cover; 411. an exhaust port; 412. an air inlet; 42. a one-way circulation mechanism; 421. a support frame; 422. a cylinder; 423. a baffle plate; 424. a plugging plate; 425. a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution: the utility model provides a cold and hot air current passageway system of totally closed computer lab, includes computer lab main part 1, and vent one 11 and vent two 12 have been seted up to one side of computer lab main part 1, all installs filtering mechanism 2 in vent one 11 and the vent two 12, installs the subassembly of taking a breath 3 that is linked together with vent one 11 on the top inner wall of computer lab main part 1, and subassembly of taking a breath 3 is located fixed mounting on one side inner wall of two filtering mechanism 2 has the exhaust subassembly 4 that is linked together with vent two 12.
Furthermore, through two filter screens 21, external dust can be prevented from entering the ventilation assembly 3 and the machine room main body 1, and the cleanness inside the machine room main body 1 is guaranteed.
Subassembly 3 takes a breath includes two guide arms 31 and electric putter 33 of fixed mounting on the inner wall of machine room main part 1 top, guide arm 31 is L shape, slidable mounting has same extrusion mechanism 32 on two guide arms 31, the both sides of extrusion mechanism 32 are the opening setting, and one side of extrusion mechanism 32 and the lateral wall fixed connection of machine room main part 1, and vent 11 is linked together with extrusion mechanism 32, one side fixed mounting that vent 11 was kept away from to extrusion mechanism 32 has push pedal 34, electric putter 33's output pole and push pedal 34 fixed connection.
Furthermore, one end of the corrugated pipe 323 can be blocked by the push plate 34, and the corrugated pipe 323 can be supported by the cooperation of the second mounting frame 322 and the plurality of limiting sleeves 324 with the two guide rods 31, so that the corrugated pipe 323 is always in a horizontal state, the situation that the middle part of the corrugated pipe 323 drops cannot occur, and the compression and extension processes of the corrugated pipe 323 can be smoother.
The extrusion mechanism 32 comprises a corrugated pipe 323, a first installation frame 321 and a second installation frame 322 are respectively and fixedly installed on two sides of the corrugated pipe 323, the first installation frame 321 is fixedly connected with the side wall of the machine room main body 1, the second installation frame 322 is fixedly connected with the push plate 34, the two guide rods 31 are both fixedly connected with the first installation frame 321, the second installation frame 322 is slidably sleeved on the two guide rods 31, a plurality of limiting sleeves 324 which are linearly distributed are fixedly installed on two sides of the corrugated pipe 323, and the plurality of limiting sleeves 324 are respectively slidably sleeved on the corresponding guide rods 31.
Further, when the electric push rod 33 continuously extends and retracts, the corrugated pipe 323 can be driven by the push plate 34 to compress and extend, when the corrugated pipe 323 is in a fully extended state, the pressure inside the machine room main body 1 is kept consistent with the pressure outside, then negative pressure is formed inside the machine room main body 1 in the process of compression of the corrugated pipe 323, at this time, outside cold air enters the machine room main body 1 through the second vent 12 and the air inlet 412, then under the condition that the compressed corrugated pipe 323 is extended, hot air inside the machine room main body 1 is discharged out of the machine room main body 1 through the air outlet 411 and the second vent 12, therefore, the hot air inside the machine room main body 1 and the outside cold air can be circulated in the circulating process of compression and extension of the corrugated pipe 323, so that the temperature inside the machine room main body 1 is reduced, the temperature of components inside the machine room main body 1 is finally reduced, the filter mechanism 2 located in the first vent 11 can filter the outside cold air entering the corrugated pipe 323, and the filter mechanism 2 in the first vent 11 can be reversely flushed all the time, and the filter mechanism 2 does not need to be cleaned frequently.
The bellows 323 is coated with a thermally conductive coating on both the inside and outside.
Further, the heat inside and outside the corrugated pipe 323 can be conducted by additionally arranging the heat conducting coating, so that part of heat inside the machine room main body 1 is carried away by cold air entering and exiting the corrugated pipe 323 in the continuous expansion and compression process of the corrugated pipe 323.
The exhaust assembly 4 includes a mounting cover 41, the mounting cover 41 is provided with a mounting cover 41 and an air inlet 412, the air inlet 412 is located above the air outlet 411, the one-way circulation mechanisms 42 are installed in the air outlet 411 and the air inlet 412, and the one-way circulation mechanisms 42 in the air outlet 411 and the air inlet 412 are distributed in a mirror image manner.
One-way circulation mechanism 42 includes the support frame 421 of fretwork, is equipped with two cylinders 422 on the support frame 421, two cylinders 422 all run through the support frame 421 and with support frame 421 sliding connection, two cylinders 422 same one end fixed mounting have same shutoff board 424, and two cylinders 422 keep away from the equal fixed mounting in one end of shutoff board 424 has baffle 423, fixed mounting has same sliding sleeve to establish spring 425 on cylinder 422 between baffle 423 and the support frame 421.
Further, when negative pressure is formed in the machine room main body 1, external cold air flows into the mounting cover 41 through the second air vent 12, then the cold air in the mounting cover 41 presses the blocking plate 424 in the air inlet 412 to separate from the air inlet 412, and then the cold air in the mounting cover 41 enters the machine room main body 1 through the air inlet 412, and in the process, even if the blocking plate 424 in the air outlet 411 is pressed, the blocking plate 424 is always in the air outlet 411, so that the air outlet 411 is always in a closed state in the process that the external cold air enters the machine room main body 1, and in the process, the filter mechanism 2 in the second air vent 12 can filter dust in the external cold air, so that the cleanness of the cold air entering the machine room main body 1 is guaranteed;
when the internal pressure of the machine room main body 1 is higher than the external pressure, the hot air in the machine room main body 1 extrudes the blocking plate 424 in the exhaust port 411 to separate from the exhaust port 411, and then the hot air flows to the outside of the machine room main body 1 through the air vent II 12, and in the process, the blocking plate 424 in the air inlet 412 is always in the air inlet 412 even if being extruded, so that when the hot air in the machine room main body 1 is discharged outwards, the air inlet 412 is always in a closed state, in the process, the discharged hot air can flush the filtering mechanism 2 in the air vent II 12, and dust attached to the filtering mechanism 2 can be removed, so that the filtering mechanism 2 can be used for a long time, and frequent maintenance on the filtering mechanism 2 is not needed;
in the process of air flowing through the air outlet 411 and the air inlet 412, the blocking plates 424 need to overcome the deformation of the springs 425 to move, and when the inside of the machine room main body 1 and the outside air are no longer circulated, under the elastic force of the corresponding springs 425, the two blocking plates 424 are both located in the air outlet 411 and the air inlet 412 to block the air outlet 411 and the air inlet 412, so that under the condition that the inside of the machine room main body 1 and the outside air are no longer circulated, the machine room main body 1 can be completely in a closed state.
The inner walls of the air outlet 411 and the air inlet 412 are in interference fit with the outer side of the supporting frame 421, and the inner walls of the air outlet 411 and the air inlet 412 are in transition fit with the outer side of the blocking plate 424.
The first air vent 11 and the second air vent 12 are obliquely arranged, and the openings of the first air vent 11 and the second air vent 12 on the outer side are lower than the opening in the machine room main body 1.
Furthermore, because the opening that vent one 11 and vent two 12 are located the computer lab main part 1 outside is less than the inside opening of computer lab main part 1, not only can reduce the probability that the dust falls into vent one 11 and vent two 12, also can play certain water-proof effects simultaneously
In this embodiment, when the interior of the machine room main body 1 and the electrical components inside the machine room main body 1 are cooled, the bellows 323 can be driven to compress and extend by the expansion and contraction of the electric push rod 33, during the process of compressing and extending the bellows 323, a pressure difference will occur between the air pressures inside and outside the machine room main body 1, when the internal pressure of the machine room main body 1 is smaller than the external pressure, the external cold air will enter the installation cover 41 through the second vent holes 12 and finally enter the machine room main body 1 through the air inlets 412, during this process, the filtering mechanisms 2 located in the second vent holes 12 can filter the cold air entering the machine room main body 1 from the outside, and when the internal pressure of the machine room main body 1 is greater than the external pressure, the hot air inside the machine room main body 1 will enter the installation cover 41 through the air outlets 411 and finally be discharged through the second vent holes 12, during this process, the hot air can back flush the filtering mechanisms 2 in the second vent holes 12, so that the filtering mechanisms 2 in the second vent holes 12 always maintain a better filtering effect, and when the external pressure inside the machine room main body 1 is kept consistent, the air outlets and the unidirectional air inlets 412 are all blocked, and the one-way ventilation mechanism 411 completely seals the machine room main body 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a cold and hot air current passageway system of totally closed computer lab, includes computer lab main part (1), its characterized in that: vent one (11) and vent two (12) have been seted up to one side of computer lab main part (1), all install filtering mechanism (2) in vent one (11) and vent two (12), install on the top inner wall of computer lab main part (1) subassembly (3) of taking a breath that are linked together with vent one (11), fixed mounting has exhaust subassembly (4) that are linked together with vent two (12) on subassembly (3) of taking a breath is located one side inner wall of two filtering mechanism (2).
2. The fully-closed machine room cold and hot airflow channel system according to claim 1, characterized in that: filtering mechanism (2) include with filter screen (21) and fixed cover establish installation department (22) on filter screen (21), filter screen (21) and the inner wall clearance fit of blow vent (11) and blow vent two (12), and filter screen (21) are gone up fixed cover and are equipped with the sealing washer with blow vent (11) and blow vent two (12) inner wall interference fit.
3. The fully-closed machine room cold and hot airflow channel system according to claim 1, characterized in that: subassembly (3) take a breath includes two guide arms (31) and electric putter (33) of fixed mounting on computer lab main part (1) top inner wall, guide arm (31) are L shape, and slidable mounting has same extrusion mechanism (32) on two guide arms (31), the both sides of extrusion mechanism (32) are the opening setting, and the lateral wall fixed connection of one side and computer lab main part (1) of extrusion mechanism (32) to blow vent (11) are linked together with extrusion mechanism (32), one side fixed mounting that blow vent (11) were kept away from in extrusion mechanism (32) has push pedal (34), the output pole and push pedal (34) fixed connection of electric putter (33).
4. The fully-closed machine room cold and hot airflow channel system according to claim 3, characterized in that: extrusion mechanism (32) include bellows (323), the both sides of bellows (323) are fixed mounting respectively have installing frame (321) and installing frame two (322), the lateral wall fixed connection of installing frame (321) and computer lab main part (1), installing frame two (322) and push pedal (34) fixed connection, two guide arms (31) all with installing frame (321) fixed connection, installing frame two (322) slip cap is established on two guide arms (31), the both sides fixed mounting of bellows (323) is a plurality of stop collars (324) of linear distribution, and a plurality of stop collars (324) slip cap respectively are established on corresponding guide arm (31).
5. The fully-closed machine room cold and hot airflow channel system according to claim 4, characterized in that: the inner side and the outer side of the corrugated pipe (323) are coated with heat conducting coatings.
6. The fully-closed machine room cold and hot airflow channel system according to claim 1, characterized in that: exhaust subassembly (4) are including installing cover (41), be equipped with installation cover (41) and air inlet (412) on installation cover (41), air inlet (412) are located the top of gas vent (411), all install one-way circulation mechanism (42) in gas vent (411) and air inlet (412), and one-way circulation mechanism (42) in gas vent (411) and air inlet (412) are the mirror image and distribute.
7. The fully-closed machine room cold and hot airflow channel system according to claim 6, characterized in that: one-way circulation mechanism (42) include support frame (421) of fretwork, be equipped with two cylinders (422) on support frame (421), two cylinders (422) all run through support frame (421) and with support frame (421) sliding connection, the same one end fixed mounting of two cylinders (422) has same shutoff board (424), and the equal fixed mounting in one end that shutoff board (424) were kept away from in two cylinders (422) has baffle (423), fixed mounting has spring (425) that the cover was established on cylinder (422) with sliding between baffle (423) and support frame (421).
8. The fully-closed machine room cold and hot airflow channel system according to claim 7, characterized in that: the inner walls of the exhaust port (411) and the air inlet (412) are in interference fit with the outer sides of the support frames (421), and the inner walls of the exhaust port (411) and the air inlet (412) are in transition fit with the outer sides of the blocking plates (424).
9. The fully-closed machine room cold and hot airflow channel system according to claim 1, characterized in that: vent one (11) and vent two (12) are the slope setting, vent one (11) and vent two (12) are located the opening in the outside and are less than the opening that is located computer lab main part (1) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210806485.8A CN115228196B (en) | 2022-07-08 | 2022-07-08 | Totally-enclosed cold and hot air flow channel system of machine room |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210806485.8A CN115228196B (en) | 2022-07-08 | 2022-07-08 | Totally-enclosed cold and hot air flow channel system of machine room |
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| CN115228196B CN115228196B (en) | 2023-07-07 |
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| CN110227307A (en) * | 2019-06-17 | 2019-09-13 | 义博通信设备集团股份有限公司 | Cabinet is used in a kind of communication |
| CN210569009U (en) * | 2019-07-07 | 2020-05-19 | 赣州华冠钢结构有限公司 | Ventilation device for container room |
| CN210473384U (en) * | 2020-02-25 | 2020-05-08 | 通用空气(辽宁)有限公司 | Special air exhaust purification disinfection system for negative pressure ward |
| CN112082231A (en) * | 2020-10-21 | 2020-12-15 | 温州莜例贸易有限公司 | Multifunctional air purifier |
| CN113082889A (en) * | 2021-04-13 | 2021-07-09 | 北京怡盛原环保科技有限公司 | Special air purification device of thermal power factory |
| CN214844296U (en) * | 2021-07-14 | 2021-11-23 | 绍兴大明电力建设有限公司 | High-precision automatic detection device for electric power construction foundation pit |
| CN113455828A (en) * | 2021-08-16 | 2021-10-01 | 何超 | Intelligence house wardrobe with function of taking a breath |
| CN113648768A (en) * | 2021-08-16 | 2021-11-16 | 向俊 | Dust collector is used in track traffic construction |
| CN215735572U (en) * | 2021-08-31 | 2022-02-01 | 沈阳大凡科技有限公司 | Electronic communication equipment is with dustproof isolation formula cooling structure |
| CN215682443U (en) * | 2021-10-09 | 2022-01-28 | 南京市天祥塑胶有限公司 | Combined plastic television rear cover convenient to maintain |
| CN114485793A (en) * | 2022-01-22 | 2022-05-13 | 李超 | Wisdom city environmental monitoring system |
| CN114558396A (en) * | 2022-03-14 | 2022-05-31 | 徐州鑫启航塑业有限公司 | Industrial feature of environmental protection air purification dust collector |
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