CN110422187A - A kind of electric equipment compartment ventilating system and vehicle - Google Patents

A kind of electric equipment compartment ventilating system and vehicle Download PDF

Info

Publication number
CN110422187A
CN110422187A CN201910745533.5A CN201910745533A CN110422187A CN 110422187 A CN110422187 A CN 110422187A CN 201910745533 A CN201910745533 A CN 201910745533A CN 110422187 A CN110422187 A CN 110422187A
Authority
CN
China
Prior art keywords
air
electric equipment
equipment compartment
air duct
outlet
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.)
Pending
Application number
CN201910745533.5A
Other languages
Chinese (zh)
Inventor
韩亮
邓纪辰
隋锡征
董志忠
高俊帅
高凤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Dalian Co Ltd
Original Assignee
CNR Dalian Locomotive and Rolling Stock Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CNR Dalian Locomotive and Rolling Stock Co Ltd filed Critical CNR Dalian Locomotive and Rolling Stock Co Ltd
Priority to CN201910745533.5A priority Critical patent/CN110422187A/en
Publication of CN110422187A publication Critical patent/CN110422187A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61CLOCOMOTIVES; MOTOR RAILCARS
    • B61C5/00Locomotives or motor railcars with IC engines or gas turbines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61DBODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00Heating, cooling, ventilating, or air-conditioning
    • B61D27/009Means for ventilating only

Abstract

The embodiment of the invention discloses the vehicles that a kind of electric equipment compartment ventilating system is using this ventilating system, it includes electric equipment compartment air duct, and electric equipment compartment air inlet and electric equipment compartment air outlet on electric equipment compartment are set, wherein, the branch air outlet in the air intake connection chassis air duct in the electric equipment compartment air duct, the outlet air end in the electric equipment compartment air duct are connected to the electric equipment compartment air inlet.The embodiment of the present invention is by being introduced directly into electric equipment compartment for the wind in chassis air duct, realize the cooling to electric equipment compartment, the temperature of electric equipment compartment can effectively be controlled, high temperature is avoided to generate adverse effect to electric elements, simultaneously do not need that ventilation blower additionally is arranged, setting connection ventilation blower is not needed to the ventilation shaft of vent external, and space is greatly saved yet;Meanwhile by the way that electric equipment compartment air outlet is arranged, realize that electric equipment compartment air draft is unobstructed, so that electric equipment compartment cooling efficiency is greatly improved.

Description

A kind of electric equipment compartment ventilating system and vehicle
Technical field
The present invention relates to aeration technology field more particularly to a kind of electric equipment compartment ventilating systems, and use this ventage The vehicle of system.
Background technique
The low voltage electrical equipments such as locomotive microcomputer, the operation of low voltage electrical equipment are mainly placed between the low-voltage electrical of diesel locomotive It needs within the scope of certain temperature, therefore, it is necessary to divulge information between low-voltage electrical, the temperature between low-voltage electrical apparatus is controlled one Determine in range, prevents locomotive microcomputer from breaking down because of high temperature.
As shown in Figure 1, in the prior art, the ventilation blower slave being separately provided is generallyd use between the low-voltage electrical of diesel locomotive Air draught outside vehicle, dries between low-voltage electrical, needs that air duct is arranged, will be connected between ventilation blower and low-voltage electrical.Specifically, it divulges information Machine is mounted in low-voltage electrical, by air duct from ambient inlet air, is discharged between low-voltage electrical, logical between playing low-voltage electrical The effect of air cooling.And ventilation blower and its air duct occupy the larger space (sky of ventilation blower and its air duct occupancy 600 × 500 × 500 Between), increase difficulty to locomotive design, also increases the workload of later maintenance;Meanwhile not set row between existing low-voltage electrical Air port, air draft is not smooth, and hot-air is not easy to be discharged, so that the cooling efficiency between low-voltage electrical is lower.
Based on this, the prior art still has much room for improvement.
Summary of the invention
In order to solve the above technical problems, the embodiment of the present invention proposes a kind of electric equipment compartment ventilating system, and use this electricity The vehicle of ventilating system between gas, it is difficult to solve locomotive design caused by the electric equipment compartment plenum spaces of the prior art occupy greatly The technical problem that degree is big and maintenance workload is big.
On the one hand, a kind of electric equipment compartment ventilating system disclosed in the embodiment of the present invention, including electric equipment compartment air duct, and setting Electric equipment compartment air inlet and electric equipment compartment air outlet on electric equipment compartment, wherein
The branch air outlet in the air intake connection chassis air duct in the electric equipment compartment air duct, the outlet air end in the electric equipment compartment air duct It is connected to the electric equipment compartment air inlet.
Further, the chassis air duct is the air duct of cooling traction electric machine.
Further, air filter is additionally provided between the branch air outlet in the chassis air duct and the electric equipment compartment air inlet Clear device.
Further, the branch air outlet and the electric equipment compartment wind in the chassis air duct is arranged in the air filtration unit Between road;Alternatively,
The air filtration unit is arranged on the electric equipment compartment air duct;Alternatively,
The air filtration unit is arranged between the electric equipment compartment air duct and the electric equipment compartment air inlet.
Further, the air filtration unit includes filtering cabinet, air grid, filter core and air outlet mechanism, wherein
Cabinet air inlet and box air outlet are provided on the filtering cabinet;
The air grid and the filter core are arranged in the filtering cabinet, and arrange along the flow direction of wind sequence;
The cabinet air inlet is connected to the branch air outlet;
Described air outlet mechanism one end is connected to the box air outlet, and the other end is connected to the electric equipment compartment air inlet.
Further, the draught area of the air grid is adjustable.
Further, the cabinet air inlet is connected to the branch air outlet, and the outlet air end of the air outlet mechanism is connected to institute State the air intake in electric equipment compartment air duct.
Further, the electric equipment compartment air inlet and the electric equipment compartment air outlet are diagonally arranged.
Further, the filtering welding box body is on the chassis air duct.
On the other hand, the embodiment of the invention discloses a kind of vehicles comprising any one of the above electric equipment compartment ventilating system.
By adopting the above technical scheme, the present invention at least has the following beneficial effects:
The embodiment of the present invention realizes the cooling to electric equipment compartment by the way that the wind in chassis air duct is introduced directly into electric equipment compartment, can Effectively to control the temperature of electric equipment compartment, high temperature is avoided to generate adverse effect to electric elements, while not needing that ventilation is additionally arranged Machine does not need setting connection ventilation blower to the ventilation shaft of vent external yet, space is greatly saved;Meanwhile passing through setting electricity Air outlet between gas realizes that electric equipment compartment air draft is unobstructed, so that electric equipment compartment cooling efficiency is greatly improved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
The structural schematic diagram of Fig. 1 ventilating system between the low-voltage electrical of the prior art;
Fig. 2 is the electric equipment compartment ventilation system setups schematic diagram of one embodiment of the invention;
Fig. 3 is the structural schematic diagram of the air filtration unit of the electric equipment compartment ventilating system of one embodiment of the invention;
Fig. 4 is the air grid structural schematic diagram of the electric equipment compartment ventilating system of one embodiment of the invention;
Fig. 5 is the air grid structural schematic diagram of the electric equipment compartment ventilating system of one embodiment of the invention;
Fig. 6 is that the wind of the electric equipment compartment ventilating system of one embodiment of the invention flows to schematic diagram.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference The embodiment of the present invention is further described in attached drawing.
It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention The non-equal entity of a same names or non-equal parameter, it is seen that " first " " second " only for the convenience of statement, does not answer It is interpreted as the restriction to the embodiment of the present invention, subsequent embodiment no longer illustrates this one by one.
As shown in Fig. 2, some embodiments of the invention disclose a kind of electric equipment compartment ventilating system, including electric equipment compartment air duct 3, with And electric equipment compartment air inlet 4 and electric equipment compartment air outlet 5 on electric equipment compartment 6 are set, wherein the air intake in the electric equipment compartment air duct 3 It is connected to the branch air outlet 11 in chassis air duct 1, the outlet air end in the electric equipment compartment air duct 3 is connected to the electric equipment compartment air inlet 4.
In the present embodiment, the wind in chassis air duct 1 is introduced directly into as electric equipment compartment 6, the cooling to electric equipment compartment 6 is realized, it can Effectively to control the temperature of electric equipment compartment 6, high temperature is avoided to generate adverse effect to electric elements, while not needing that ventilation is additionally arranged Machine does not need setting connection ventilation blower to the ventilation shaft of vent external yet, space is greatly saved.Electric equipment compartment 6 can be interior Between combustion locomotive electric equipment compartment or other electrical equipments.
In some embodiments of the invention, the chassis air duct 1 is the air duct of cooling traction electric machine, is realized pair in locomotive Traction electric machine cools, and generallys use traction ventilator air inducing to chassis channel, and finally wind, which is led the way at traction electric machine, is Traction electric machine cooling, the present embodiment realize the drop to electric equipment compartment by the way that branch is arranged on the chassis air duct 1 for leading to traction electric machine Temperature.
It is of the invention in order to avoid the dust in air is directly entered electric equipment compartment 6 in some preferred embodiments of the present invention In electric equipment compartment ventilating system disclosed in some embodiments, the branch air outlet 11 in the chassis air duct 1 and the electric equipment compartment into Air filtration unit 2 is additionally provided between air port 4.By the way that air filtration unit 2 is arranged, the control for entering electric equipment compartment was carried out Filter effectively prevents dust electrical component failures and loss caused by electric equipment compartment accumulation and mentions to reduce maintenance cost The high service life of electric component.
In some embodiments of the invention, the setting position of air filtration unit 2 can be it is changeable, specifically, the sky Gas filter 2 is arranged between the branch air outlet 11 in the chassis air duct 1 and the electric equipment compartment air duct 3;Alternatively, the sky Gas filter 2 is arranged on the electric equipment compartment air duct 3;Alternatively, the air filtration unit 2 is arranged in the electric equipment compartment wind Between road 3 and the electric equipment compartment air inlet 4.
In electric equipment compartment ventilating system disclosed in some embodiments of the invention, as shown in figure 3, the air filtration unit 2 Including filtering cabinet 21, air grid 22, filter core 23 and air outlet mechanism 24, wherein be provided with cabinet air inlet on the filtering cabinet 21 Mouth and box air outlet;The air grid 22 and the filter core 23 are arranged in the filtering cabinet 21, and along the flow direction of wind Sequence is arranged;The cabinet air inlet is connected to the branch air outlet 11;Described 24 one end of air outlet mechanism is connected to the cabinet and goes out Air port, the other end are connected to the electric equipment compartment air inlet 4.Air exhausting structure can be assembled and be mounted on 21 top of filtering cabinet, play sealing With the effect of fixed filter core 23, settable outlet grid 25 is installed in 2 air outlet of air filtration unit (i.e. air outlet mechanism 24) Place, can adjust air-out direction.Preferably, air duct aperture face filtering cabinet 21.
23 filtering of filter core can be used in air filtration unit 2 of the invention, and papery, filter pulp, palm can be used in 23 material of filter core Deng, filtering precision, efficiency difference, but filtering can be played the role of.
In use, the wind to be come by the branch air outlet 11 in chassis air duct 1, initially enters filtering cabinet 21, in filtering case Air grid 22 is first passed through in body 21 and controls air quantity, is then filtered by filter core 23, after pure air is via air outlet mechanism 24, can enter electricity Between gas.
In some embodiments of the invention, such as Fig. 4, shown in Fig. 5, in order to effectively control air quantity, avoid air quantity excessive to electrical Between cause load or air quantity too small and electric equipment compartment cooling is caused to be unable to meet demand, the draught area setting of the air grid 22 It is adjustable.Specifically, as shown in figure 5, the air grid 22 includes frame 221, the first wind on the frame 221 is set Plate 222 and the second aerofoil 223 are provided with the first air holes on first aerofoil 222, are provided on second aerofoil 223 Two air holes, first aerofoil 222 and second aerofoil 223 stack, and make first air holes and second air holes at least It partially overlaps and forms ventilation hole 224, and first aerofoil 222 and second aerofoil 223 can be perpendicular to the aerofoils Direction on make a relative move, by the relative movement of the first aerofoil 222 and the second aerofoil 223, make the ventilation hole 224 Cross-sectional area is variable, to realize the adjustment to air quantity.
In some embodiments of the invention, as shown in Fig. 2, the cabinet air inlet is connected to the branch air outlet 11, it is described The outlet air end of air outlet mechanism 24 is connected to the air intake in the electric equipment compartment air duct 3.Preferably, the filtering cabinet 21 is welded on described On chassis air duct 1.
In some embodiments of the invention, in order to further ensure the cooling efficiency in electric equipment compartment, the electric equipment compartment air inlet 4 With the diagonally setting of electric equipment compartment air outlet 5, electric equipment compartment air outlet 5 be can be set on top cover, so that fluid wind is in electric equipment compartment It is interior to pass through biggish path, to take away more heats.
The embodiment of the invention also discloses a kind of vehicles to pass through traction by the way that above-mentioned electric equipment compartment ventilating system is arranged Ventilation blower is realized simultaneously to traction blower and is cooled to electric equipment compartment, is avoided empty brought by multiple ventilation blower settings Between occupation problem;By the way that electric equipment compartment air outlet is arranged as exhaust outlet in electric equipment compartment, guarantees the fluency of air draft in electric equipment compartment, mention High hot-air circulation efficiency, by setting air filtration unit realize to enter electric equipment compartment in air filter cleaning, avoid by Dust etc. in air brings electric equipment compartment into, generates adverse effect to device in electric equipment compartment;It is adjustable by setting draught area Air grid realizes the adjusting to air quantity in electric equipment compartment is entered;By the way that electric equipment compartment air inlet and the electric equipment compartment air outlet are diagonally set It sets, improves heat exchange efficiency.
Embodiment 1
By taking certain vehicle as an example, the total blast volume of traction electric machine ventilation is 4.3m3/ s, the ventilation quantity between low-voltage electrical are 0.1m3/ S, it is feasible for being diverted between low-voltage electrical from traction electric machine ventilation.Between cancellation low-voltage electrical after ventilation blower, it can vacate big Space for maintenance is measured, maintainability is improved, reduces the buying expenses of ventilation blower.Meanwhile entering low-voltage electrical from chassis air duct in air Between inlet, air filtration unit is set, filtering is carried out to air, grid, that is, air grid is housed in air filtration unit, can Air output is adjusted, the cleannes into air between low-voltage electrical are effectively improved.Design of cover has ventilation opening, air between low-voltage electrical It being flowed into from chassis entrance, static air pressure is about 2000Pa, the characteristic flowed using air fluid from pressure eminence toward pressure lower, Air flow field from bottom to top is formed between low-voltage electrical, is flowed out from top cover ventilation opening, is improved the mobility of air.
Embodiment 2
As shown in fig. 6, air filtration unit is welded on chassis, the wind regime of traction electric machine ventilation is from the aperture of chassis air duct Into the filtering cabinet of air filtration unit, successively after air grid tune wind and filter core filtering, between low-voltage electrical;Low tension Top cover is provided with ventilation opening between gas, and air enters from the aperture of chassis air duct, is discharged from top cover ventilation opening, in the interior formation of low-voltage electrical Wind field from bottom to top, hot-air are discharged from top cover ventilation opening.
The embodiment of the present invention eliminates ventilation blower between low-voltage electrical, saves 600 × 500 × 500 space, utilizes Other Wind Volume ventilation blowers take into account air-supply, improve the repair and maintenance between low-voltage electrical;Save the cost of buying ventilation blower And the repair and maintenance expense in later period;Provided with air filtration unit, filtering efficiency is higher than 80%, and 270 mesh of filtering precision improves The cleannes of interior air, air-filtering;The characteristic for flowing to low pressure by high pressure using air fluid, makes the sky between low-voltage electrical Gas flows to top cover ventilation opening from air filtration unit, is easier hot-air between being discharged to outer;Ventilation quantity is adjusted with air grid, makes wind Amount is controllable.
It is important to note that the various components or step in above-mentioned each embodiment can intersect, replace, Increase, delete, therefore, these reasonable permutation and combination convert the combination to be formed and should also be as belonging to the scope of protection of the present invention, and And protection scope of the present invention should not be confined on the embodiment.
It is exemplary embodiment disclosed by the invention above, the disclosed sequence of the embodiments of the present invention is just to retouching It states, does not represent the advantages or disadvantages of the embodiments.It should be noted that the discussion of any of the above embodiment is exemplary only, it is not intended that It implies that range disclosed by the embodiments of the present invention (including claim) is limited to these examples, is limited without departing substantially from claim Range under the premise of, may be many modifications and modify.According to the claim to a method of open embodiment described herein Function, step and/or movement be not required to any particular order execution.In addition, although element disclosed by the embodiments of the present invention can It is odd number to be described or be required in the form of individual, but unless explicitly limited, it is understood that be multiple.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not It is intended to imply that range disclosed by the embodiments of the present invention (including claim) is limited to these examples;In the think of of the embodiment of the present invention Under road, it can also be combined between the technical characteristic in above embodiments or different embodiments, and exist as described above Many other variations of the different aspect of the embodiment of the present invention, for simplicity, they are not provided in details.Therefore, all at this Within the spirit and principle of inventive embodiments, any omission, modification, equivalent replacement, improvement for being made etc. should all be included in this hair Within the protection scope of bright embodiment.

Claims (10)

1. a kind of electric equipment compartment ventilating system, which is characterized in that including electric equipment compartment air duct, and the electric equipment compartment being arranged on electric equipment compartment Air inlet and electric equipment compartment air outlet, wherein
The branch air outlet in the air intake connection chassis air duct in the electric equipment compartment air duct, the outlet air end connection in the electric equipment compartment air duct The electric equipment compartment air inlet.
2. system according to claim 1, which is characterized in that the chassis air duct is the air duct of cooling traction electric machine.
3. system according to claim 1, which is characterized in that the branch air outlet and the electric equipment compartment in the chassis air duct Air filtration unit is additionally provided between air inlet.
4. system according to claim 3, which is characterized in that the chassis air duct is arranged in the air filtration unit Between branch air outlet and the electric equipment compartment air duct;Alternatively,
The air filtration unit is arranged on the electric equipment compartment air duct;Alternatively,
The air filtration unit is arranged between the electric equipment compartment air duct and the electric equipment compartment air inlet.
5. system according to claim 3, which is characterized in that the air filtration unit includes filtering cabinet, air grid, filter Core and air outlet mechanism, wherein
Cabinet air inlet and box air outlet are provided on the filtering cabinet;
The air grid and the filter core are arranged in the filtering cabinet, and arrange along the flow direction of wind sequence;
The cabinet air inlet is connected to the branch air outlet;
Described air outlet mechanism one end is connected to the box air outlet, and the other end is connected to the electric equipment compartment air inlet.
6. system according to claim 5, which is characterized in that the draught area of the air grid is adjustable.
7. system according to claim 5, which is characterized in that the cabinet air inlet is connected to the branch air outlet, institute The outlet air end for stating air outlet mechanism is connected to the air intake in the electric equipment compartment air duct.
8. system according to claim 1, which is characterized in that the electric equipment compartment air inlet and the electric equipment compartment air outlet pair Angle setting.
9. system according to claim 7, which is characterized in that the filtering welding box body is on the chassis air duct.
10. a kind of vehicle, which is characterized in that including system described in any one of claim 1-9.
CN201910745533.5A 2019-08-13 2019-08-13 A kind of electric equipment compartment ventilating system and vehicle Pending CN110422187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910745533.5A CN110422187A (en) 2019-08-13 2019-08-13 A kind of electric equipment compartment ventilating system and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910745533.5A CN110422187A (en) 2019-08-13 2019-08-13 A kind of electric equipment compartment ventilating system and vehicle

Publications (1)

Publication Number Publication Date
CN110422187A true CN110422187A (en) 2019-11-08

Family

ID=68415997

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910745533.5A Pending CN110422187A (en) 2019-08-13 2019-08-13 A kind of electric equipment compartment ventilating system and vehicle

Country Status (1)

Country Link
CN (1) CN110422187A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2393745Y (en) * 1999-09-28 2000-08-30 大同机车厂 Separate venhtilator for railway vehicle
CN2861838Y (en) * 2005-11-24 2007-01-24 杨文婷 Air purifier in laminated wind supply mouth with core
CN102785670A (en) * 2012-08-31 2012-11-21 南车戚墅堰机车有限公司 Internal combustion locomotive with low axle weight and narrow track
CN106673415A (en) * 2016-12-08 2017-05-17 佛山市索奥斯玻璃技术有限公司 Adjustable air compressing device for quenching cold air grate of glass toughening furnace
CN109466578A (en) * 2018-11-23 2019-03-15 中车株洲电力机车有限公司 A kind of locomotive ventilating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2393745Y (en) * 1999-09-28 2000-08-30 大同机车厂 Separate venhtilator for railway vehicle
CN2861838Y (en) * 2005-11-24 2007-01-24 杨文婷 Air purifier in laminated wind supply mouth with core
CN102785670A (en) * 2012-08-31 2012-11-21 南车戚墅堰机车有限公司 Internal combustion locomotive with low axle weight and narrow track
CN106673415A (en) * 2016-12-08 2017-05-17 佛山市索奥斯玻璃技术有限公司 Adjustable air compressing device for quenching cold air grate of glass toughening furnace
CN109466578A (en) * 2018-11-23 2019-03-15 中车株洲电力机车有限公司 A kind of locomotive ventilating system

Similar Documents

Publication Publication Date Title
JP6001691B2 (en) Modular vehicle air conditioner with heat pump function
CN205807738U (en) A kind of central air conditioning system
CN203083030U (en) Split type energy-saving fresh air machine
KR101151713B1 (en) Ventilation apparatus
CN201531981U (en) Air-conditioner exhaust device and air conditioner using same
CN104325862A (en) Vehicle-mounted internal environment management system and in-vehicle environment control method
CN111895556A (en) Cold circulating device of aeration cooling air conditioner
KR101306575B1 (en) System for cooling battery of electric car
CN111578671A (en) Material drying and cooling equipment
CN110422187A (en) A kind of electric equipment compartment ventilating system and vehicle
CN106091180A (en) Fresh air dehumidification device
WO2022068577A1 (en) Air conditioning indoor unit, and fresh air ventilation module thereof
CN108571773A (en) A kind of empty integral structure and air conditioner only
CN107702222A (en) A kind of air filter based on heat exchanger
JP2004069125A (en) Ventilator for building
FI86768B (en) Air-exchange arrangement based on the principle of heat recovery
CN209706286U (en) A kind of fibre spinning workshop ventilation system
CN210132968U (en) Local air flow suction device with good automobile stability
EP4195368A1 (en) Air delivery module and battery casing for a battery pack
CN212691991U (en) Dynamic intelligent energy-saving central air conditioner temperature equalization control equipment
KR102290393B1 (en) air conditioner for fine dust removal and energy saving with minimize a loss of static pressure
CN220874938U (en) Heat exchange device and traction converter
CN213514139U (en) Air conditioner indoor unit and air conditioner
CN211650636U (en) Integrated form operating room clean system
CN209709508U (en) A kind of power distribution cabinet of high efficiency and heat radiation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20191108

WD01 Invention patent application deemed withdrawn after publication