阅读说明：本技术 一种具有开式固定百叶窗的军用电磁屏蔽换气装置 (Military electromagnetic shielding and air changing device with open type fixed shutter ) 是由 王美林 汪东辉 胡兴万 于 2020-04-29 设计创作，主要内容包括：本发明公开了一种具有开式固定百叶窗的军用电磁屏蔽换气装置,包括开式固定百叶窗、防尘装置、强制通风装置、电磁屏蔽网和后外壳,防尘装置为由防尘丝网、防尘棉和防尘丝网组成的夹芯结构,强制通风装置包括风扇安装板和轴流风扇,电磁屏蔽网通过压网框安装在后外壳上；开式固定百叶窗包括窗框和矩形窗叶,所述窗框前侧面设有多个第一通风口,每个第一通风口左右两侧均设有一个窗叶固定板,第一通风口两侧的窗叶固定板从上至下设有多个成对的固定槽,矩形窗叶两端固定在两个窗叶固定板的固定槽内。本发明在保证电磁屏蔽功能的同时,同时具备满足高洁净度要求和通风量的要求,本发明通风量大,结构可靠性好,检修方便快捷。(The invention discloses a military electromagnetic shielding ventilation device with an open fixed shutter, which comprises the open fixed shutter, a dustproof device, a forced ventilation device, an electromagnetic shielding net and a rear shell, wherein the dustproof device is a sandwich structure consisting of a dustproof wire mesh, dustproof cotton and the dustproof wire mesh; open fixed shutter includes window frame and rectangle casement, the window frame leading flank is equipped with a plurality of first vents, and every first vent left and right sides all is equipped with a casement fixed plate, and the casement fixed plate of first vent both sides is from last to being equipped with a plurality of mated fixed slots down, and rectangle casement both ends are fixed in the fixed slot of two casement fixed plates. The electromagnetic shielding device has the advantages that the electromagnetic shielding function is ensured, the requirements of high cleanliness and ventilation quantity are met, the ventilation quantity is large, the structural reliability is good, and the maintenance is convenient and rapid.)

1. The utility model provides a for military use electromagnetic shield breather with open fixed shutter which characterized in that: the electromagnetic shielding device comprises a rear shell, an open type fixed shutter, a dustproof device, a forced ventilation device and an electromagnetic shielding net, wherein the open type fixed shutter, the dustproof device, the forced ventilation device and the electromagnetic shielding net are sequentially arranged on the rear shell from front to back; open fixed shutter includes window frame and rectangle window leaf, the window frame leading flank is equipped with a plurality of first vents, and every first vent is vertical rectangle, and every first vent left and right sides all is equipped with a window leaf fixed plate, the window leaf fixed plate of first vent both sides is from last to being equipped with a plurality of mated fixed slots down, the fixed slot sets up to one side down, rectangle window leaf both ends are fixed in the fixed slot of two window leaf fixed plates, and a plurality of rectangle window leaves are installed from last to down in order in first vent and are formed the open shutter that ventilation effect is good.

2. A military electromagnetic shielding ventilator as defined in claim 1 wherein: the dustproof device further comprises a dustproof screen frame, the dustproof screen frame comprises a dustproof bottom frame, dustproof surrounding plates and a dustproof screen cover, the dustproof surrounding plates are fixed on the dustproof bottom frame to form a box-shaped structure with a single-side opening, and the sandwich structure is installed in the box-shaped structure with the single-side opening and covered by the dustproof screen cover.

3. A military electromagnetic shielding ventilator as set forth in claim 2 wherein: the fan mounting plate comprises a bottom plate and side plates arranged on the periphery of the bottom plate, the axial flow fan is arranged on the bottom plate in a space enclosed by the side plates, a second ventilation opening used for corresponding to the axial flow fan is formed in the bottom plate, and the fan mounting plate is arranged between the dustproof screen frame and the rear shell.

4. A military electromagnetic shielding ventilator of claim 3 wherein: the net pressing frame comprises a net pressing bottom frame and net pressing side frames arranged on the periphery of the net pressing bottom frame, a third ventilation opening with an area smaller than that of the electromagnetic shielding net is arranged in the middle of the net pressing bottom frame, the net pressing bottom frame and the net pressing side frames form a flat box-shaped structure, the electromagnetic shielding net is fixed in the box-shaped structure, and the electromagnetic shielding net covers the third ventilation opening and is connected with the net pressing bottom frame through welding.

5. A military electromagnetic shielding ventilator of claim 4 wherein: the electromagnetic shielding net is connected with the net pressing bottom frame through brazing or soldering.

6. A military electromagnetic shielding ventilator of claim 4 wherein: and a net pressing fixing plate is arranged around the net pressing side frame, and bolt holes connected with the rear shell are formed in the net pressing fixing plate.

7. A military electromagnetic shielding ventilator of claim 4 wherein: the window frame of the open fixed shutter is of a box-shaped structure formed by enclosing a shutter bottom plate and shutter side plates, the number of the first ventilation openings is two, and the two first ventilation openings are transversely arranged on the shutter bottom plate.

8. A military electromagnetic shielding ventilator of claim 7 wherein: the rear shell is of a box-type structure consisting of a shell bottom plate and shell side plates, the electromagnetic shielding net is mounted on the shell bottom plate in the rear shell through a net pressing frame, a fourth ventilation opening corresponding to the electromagnetic shielding net is formed in the shell bottom plate, and a shell fixing plate perpendicular to the shell side plate is arranged at the front end of the shell side plate.

9. A military electromagnetic shielding ventilator of claim 8 wherein: the installation presss from both sides the shell fixed plate of the dust screen frame of core mechanism, buffering bubble cotton and back shell and install in the shutter curb plate in proper order, be equipped with the bolt hole around running through on the shutter bottom plate, dustproof underframe, fan mounting panel and the shell bottom plate of back shell, will open fixed shutter, installation press from both sides the dust screen frame and the back shell of core mechanism and fix together through the stay bolt.

10. A military electromagnetic shielding ventilator as set forth in claim 9 wherein: be equipped with the buffering bubble cotton between the shell fixed plate of dust screen frame and back shell, be equipped with the bolt hole and the combination liner that are used for installing whole for military use electromagnetic shield breather on the shell fixed plate.

Technical Field

The invention belongs to the field of electromagnetic shielding, relates to electromagnetic shielding ventilation equipment, and particularly relates to a military electromagnetic shielding ventilation device with an open type fixed shutter.

Background

Military equipment has extremely strict requirements on electromagnetic shielding, particularly for radar vehicles and related equipment, along with informatization requirements, various equipment with different requirements has differentiated ventilation shielding requirements, for example, if some equipment is intermittently started, a movable shutter is needed, some equipment needs to be kept normally started, although the equipment has small heat productivity, along with technological development, higher requirements on air cleanliness in the equipment are provided, natural ventilation electromagnetic shielding equipment and forced ventilation electromagnetic shielding equipment in the prior art cannot meet the requirements of the equipment, the mode of improving cleanliness is generally filtration, but the increase of a filtering device can reduce ventilation effect, and is a difficult problem along with the time lapse, how to find a balance between cleanliness and ventilation quantity is a technical difficulty, so that the development of a device which can meet the cleanliness requirement is urgently needed, but also can achieve the ventilation quantity.

Disclosure of Invention

The invention aims to solve the problem that the electromagnetic shielding ventilation in the prior art cannot meet the high cleanliness of modern equipment, and provides a military electromagnetic shielding ventilation device with an open fixed shutter.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a for military use electromagnetic shield breather with open fixed shutter which characterized in that: the electromagnetic shielding device comprises a rear shell, an open type fixed shutter, a dustproof device, a forced ventilation device and an electromagnetic shielding net, wherein the open type fixed shutter, the dustproof device, the forced ventilation device and the electromagnetic shielding net are sequentially arranged on the rear shell from front to back; open fixed shutter includes window frame and rectangle window leaf, the window frame leading flank is equipped with a plurality of first vents, and every first vent is vertical rectangle, and every first vent left and right sides all is equipped with a window leaf fixed plate, the window leaf fixed plate of first vent both sides is from last to being equipped with a plurality of mated fixed slots down, the fixed slot sets up to one side down, rectangle window leaf both ends are fixed in the fixed slot of two window leaf fixed plates, and a plurality of rectangle window leaves are installed from last to down in order in first vent and are formed the open shutter that ventilation effect is good.

As an improvement, the dustproof device further comprises a dustproof screen frame, the dustproof screen frame comprises a dustproof bottom frame, dustproof surrounding plates and a dustproof screen cover, the dustproof surrounding plates are fixed on the periphery of the dustproof bottom frame to form a box-type structure with a single-side opening, and the sandwich structure is installed in the box-type structure with the single-side opening and covered by the dustproof screen cover.

As an improvement, the fan mounting plate comprises a bottom plate and side plates arranged on the periphery of the bottom plate, the axial flow fan is arranged on the bottom plate in a space enclosed by the side plates, a second ventilation opening used for corresponding to the axial flow fan is arranged on the bottom plate, and the fan mounting plate is arranged between the dustproof screen frame and the rear shell.

As the improvement, press the net frame including pressing the net underframe and locating and press net side frame all around the net underframe, press net underframe middle part to be equipped with the third ventilation port that the area is less than the electromagnetic shield net, press net underframe and press net side frame to constitute flat box structure, in the electromagnetic shield net is fixed in this box structure, the electromagnetic shield net covers on the third ventilation port to link to each other through the welding between with pressing the net underframe.

As an improvement, the electromagnetic shielding net is connected with the net pressing bottom frame through brazing or soldering.

As an improvement, a net pressing fixing plate is arranged on the periphery of the net pressing side frame, and bolt holes connected with the rear shell are formed in the net pressing fixing plate.

As an improvement, the window frame of the open type fixed shutter is a box-shaped structure formed by enclosing a shutter bottom plate and shutter side plates, the number of the first ventilation openings is two, and the two first ventilation openings are transversely arranged on the shutter bottom plate.

As an improvement, the rear shell is of a box-type structure consisting of a shell bottom plate and shell side plates, the electromagnetic shielding net is mounted on the shell bottom plate in the rear shell through a net pressing frame, a fourth ventilation opening corresponding to the electromagnetic shielding net is arranged on the shell bottom plate, and a shell fixing plate perpendicular to the shell side plate is arranged at the front end of the shell side plate.

As an improvement, a dustproof screen frame, buffering foam and a shell fixing plate of a rear shell of the core clamping mechanism are sequentially installed in a shutter side plate, bolt holes penetrating through the front and the rear are formed in a shutter bottom plate, a dustproof bottom frame, a fan installation plate and a shell bottom plate of the rear shell, and an open type fixed shutter, the dustproof screen frame of the core clamping mechanism and the rear shell are fixed together through long bolts.

As an improvement, be equipped with the buffering bubble cotton between the shell fixed plate of dust screen frame and back shell, be equipped with the bolt hole and the combination liner that are used for installing whole for military use electromagnetic shield breather on the shell fixed plate.

The invention has the beneficial effects that:

the invention combines the open fixed shutter, the ventilation foam, the forced ventilation device and the electromagnetic shielding net, adopts a detachable structure, and has the following advantages:

1. the invention combines the dustproof wire mesh and the dustproof cotton sandwich to form a two-stage filtering structure, can provide high-cleanliness radiating air for the interior of military equipment, and meets the requirements of modern high-precision electronic equipment.

2. The invention meets the requirement of ventilation quantity by the axial flow fan of forced ventilation under the requirement of ensuring air cleanliness.

3. The symmetrical sandwich structure of the invention can be used for air inlet and air outlet, and only the rotation direction of the axial flow fan needs to be adjusted, thereby being different from the electromagnetic shielding equipment which can only carry out one-way ventilation in the prior art.

4. The invention has clear boundaries among all modules, adopts modular assembly, can adopt an alternative form to carry out when any one module is damaged or needs to be cleaned, and greatly improves the overhauling speed.

5. The invention is provided with the open fixed shutter, has large ventilation volume, and the ventilation volume is far superior to the closed fixed shutter developed by the company while meeting the requirement of cleanliness in equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of the military electromagnetic shielding ventilator with open fixed shutters according to the present invention.

FIG. 2 is an exploded view of the military electromagnetic shielding ventilator with open fixed shutters according to the present invention.

Fig. 3 is a schematic view of the rear housing structure of the present invention.

Fig. 4 is a schematic view showing the installation relationship between the rear case and the electromagnetic shielding net according to the present invention.

Fig. 5 is a schematic view of the military electromagnetic shielding ventilator with the rear housing and the electromagnetic shielding net removed.

Fig. 6 is a schematic structural view of the forced draft apparatus of the present invention.

FIG. 7 is an exploded view of the dust-proof device of the present invention.

FIG. 8 is an exploded view of the installation relationship between the anti-dust device and the open fixed blind according to the present invention.

FIG. 9 is a schematic front side view of an open fixed blind according to the present invention.

Fig. 10 is a partially enlarged view a of fig. 9.

1-open fixed blind, 11-blind bottom plate, 12-blind side plate, 13-first ventilation opening, 14-blind fixing plate, 15-fixing groove, 16-rectangular blind, 2-dust-proof device, 21-dust-proof screen frame, 211-dust-proof bottom frame, 212-dust-proof bounding plate, 22-dust-proof screen, 23-dust-proof cotton, 24-dust-proof screen, 25-dust-proof screen cover, 3-forced ventilation device, 31-fan mounting plate, 311-bottom plate, 312-side plate, 313-second ventilation opening, 32-axial fan, 4-electromagnetic shielding screen, 5-screen pressing frame, 51-screen pressing bottom frame, 52-screen pressing side frame, 53-third ventilation opening, 54-screen pressing fixing plate, 6-rear shell, 61-shell bottom plate, 62-shell side plate, 63-fourth vent, 64-shell fixing plate, 7-buffer foam and 8-combined gasket.

Detailed Description

The invention is illustrated in the following with reference to the accompanying drawings.

As shown in fig. 1 to 10, a military electromagnetic shielding ventilator with an open fixed louver comprises a rear housing 6, and an open fixed louver 1, a dustproof device 2, a forced ventilation device 3 and an electromagnetic shielding net 4 which are sequentially installed in the rear housing 6 from front to back, wherein the dustproof device 2 is a sandwich structure composed of a dustproof wire mesh 22, dustproof cotton 23 and a dustproof wire mesh 24, the forced ventilation device 3 comprises an axial flow fan 32 and a fan installation plate 31 for installing the axial flow fan 32, and the electromagnetic shielding net 4 is installed on the rear housing 6 through a net pressing frame 5; open fixed shutter 1 includes window frame and rectangle leaf 16, the window frame leading flank is equipped with two first vents 13 that parallel, and every first vent 13 is vertical rectangle, and every 13 left and right sides of first vent all are equipped with a leaf fixed plate 14, the leaf fixed plate 14 of 13 both sides of first vent is from last to being equipped with a plurality of mated fixed slots 15 down, fixed slot 15 sets up to one side down, rectangle leaf 16 both ends are fixed in the fixed slot 15 of two leaf fixed plates 14, and a plurality of rectangle leaves 16 form the open shutter that ventilation effect is good from last to installing in order down in first vent 13.

As shown in fig. 7, the dust-proof device 2 further includes a dust-proof screen frame 21, the dust-proof screen frame 21 includes a dust-proof bottom frame 211, a dust-proof surrounding plate 212 and a dust-proof screen cover 25, the dust-proof surrounding plate 212 is fixed around the dust-proof bottom frame 211 to form a box structure with a single side opening, and the sandwich structure is installed in the box structure with the single side opening and covered by the dust-proof screen cover 25.

As shown in fig. 6, the fan mounting plate 31 includes a bottom plate 311 and side plates 312 mounted around the bottom plate 311, the axial fan 32 is mounted on the bottom plate 311 in a space surrounded by the side plates 312, a second ventilation opening 313 corresponding to the axial fan 32 is provided on the bottom plate 311, and the fan mounting plate 31 is mounted between the dust screen frame 21 and the housing bottom plate 61 of the rear housing 6.

As shown in fig. 2 and 4, the screen pressing frame 5 includes a screen pressing bottom frame 51 and a screen pressing side frame 52 disposed around the screen pressing bottom frame 51, a screen pressing fixing plate 54 is disposed on the screen pressing side frame 52, a third vent 53 having a smaller area than the electromagnetic shielding screen 4 is disposed in the middle of the screen pressing bottom frame 51, the screen pressing bottom frame 51 and the screen pressing side frame 52 form a flat box-shaped structure, the electromagnetic shielding screen 4 is fixed in the box-shaped structure, the electromagnetic shielding screen 4 covers the third vent 53 and is connected to the screen pressing bottom frame 51 by welding, in this embodiment, the electromagnetic shielding screen 4 is connected to the screen pressing bottom frame 51 by brazing or soldering. The magnetic flux leakage phenomenon between the electromagnetic shielding net 4 and the rear shell 6 can be effectively reduced through welding.

In this embodiment, the net pressing fixing plate 54 is arranged around the net pressing side frame 52, the bolt holes connected with the rear housing 6 are formed in the net pressing fixing plate 54, so that the net pressing frame 5 is connected with the rear housing 6 through the bolts, and in addition, as an improved embodiment, a reed used for reducing magnetic flux leakage can be arranged between the net pressing fixing plate 54 and the rear housing 6. It is to be noted that at least the screen frame 5 and the rear case 6 of the present invention are made of a conductive material.

As shown in fig. 2, 8 and 9, the window frame of the open fixed blind 1 is a box-shaped structure surrounded by a blind bottom plate 11 and a blind side plate 12, and there are two first ventilation openings 13, and the two first ventilation openings 13 are transversely arranged on the blind bottom plate 11.

As shown in fig. 3, the rear housing 6 is a box-shaped structure composed of a housing bottom plate 61 and housing side plates 62, the electromagnetic shielding net 4 is mounted on the housing bottom plate 61 in the rear housing 6 through a net pressing frame 5, a fourth ventilation opening 63 corresponding to the electromagnetic shielding net 4 is arranged on the housing bottom plate 61, and a housing fixing plate 64 perpendicular to the housing side plates 62 is arranged at the front end of the housing side plates 62.

As shown in fig. 5, as a specific fixing method, the dust screen frame 21 for mounting the core-clamping mechanism, the buffer foam 7 and the housing fixing plate 64 for the rear housing 6 are sequentially installed in the louver side plate 12, the louver bottom plate 11, the dust-proof bottom frame 211, the fan mounting plate 31 and the housing bottom plate 61 for the rear housing 6 are provided with bolt holes penetrating through the front and the rear, and the open type fixing louver 1, the dust screen frame 21 for mounting the core-clamping mechanism, the fan mounting plate 31 and the rear housing 6 are fixed together by long bolts.

Be equipped with buffering bubble cotton 7 between dustproof screen frame 21 and the shell fixed plate 64 of back shell 6, be equipped with the bolt hole and the combination liner 8 that are used for installing whole for military use electromagnetic shield breather on the shell fixed plate 64, can increase for military use electromagnetic shield breather and treat the leakproofness between the erection equipment through combination liner 8, increase anti-seismic performance and electromagnetic sealing performance, combination liner 8 is the annular liner of constituteing side by the elastic rubber of inboard and the wire mesh strip in the outside in this embodiment, elastic rubber can provide damping and sealed effect, the wire mesh can provide better electromagnetic sealing effect.

When in use, the dust-proof device is arranged on a ventilation door or a window of a radar vehicle which needs to be highly cleaned inside, the device is fixed through a bolt, an axial flow fan 32 is started, outside air is subjected to primary filtration through a dust-proof screen 22, then is subjected to secondary filtration through dust-proof foam, and then enters the device through a dust-proof screen 24 again to ventilate and cool the device, the dust-proof foam has larger wind resistance and good filtration effect due to the dust-proof foam, and the forced ventilation axial flow fan 32 is also arranged, so that the dust-proof device 2 is arranged into a screen, foam and screen sandwich structure, on one hand, the dust-proof foam is effectively supported through the screen, on the other hand, the screen can carry out primary filtration, and most importantly, the device has forced air inlet and forced air outlet, so that only the rotation direction of the axial flow fan 32 needs to be changed, and the device can be transformed into a forced air, the air inlet and the air outlet are forced and the foam with high filtering effect is used for ensuring the high cleanness and the heat dissipation and ventilation requirements of the interior of the equipment.

The open type fixed shutter 1 disclosed by the invention has a good rainproof effect in design because the shutter cannot be closed, and can prevent rain, prevent rainwater falling in an inclined manner under the condition of strong wind and greatly improve the rainproof effect. Each part of the invention, particularly the sandwich structure, is detachable, so that each part of the invention can be better, and particularly the foam can be detached for ash removal.