CN204116799U - A kind of teaching hoisting box for projection instrument structure of improvement - Google Patents
A kind of teaching hoisting box for projection instrument structure of improvement Download PDFInfo
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- CN204116799U CN204116799U CN201420605971.4U CN201420605971U CN204116799U CN 204116799 U CN204116799 U CN 204116799U CN 201420605971 U CN201420605971 U CN 201420605971U CN 204116799 U CN204116799 U CN 204116799U
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- flow path
- snorkel
- main body
- box
- precipitation chamber
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Abstract
The utility model discloses a kind of teaching hoisting box for projection instrument structure of improvement, comprise box main body, the bottom of box main body is also provided with air inlet casing, precipitation chamber is provided with in air inlet casing, the sidewall in precipitation chamber is provided with draft tube, draft tube extends to the outside of air inlet casing, the top in precipitation chamber is provided with the snorkel of UNICOM's box main body, snorkel is provided with axial flow blower, snorkel is provided with several baffle plates tilting to install with the below of precipitation chamber interface, the bottom surface in precipitation chamber is provided with several through the reducing precipitating chamber and air inlet casing; The both sides of box main body are provided with venting flow path, and venting flow path is connected with snorkel, and the lateral wall of venting flow path is provided with the slit through with the external world, and venting flow path madial wall is provided with several air holes, and the arranged outside of venting flow path has heat transmission fin.The utility model can improve the deficiencies in the prior art, without the need to arranging filtration unit, realizes the clean of box inside.
Description
Technical field
The utility model relates to a kind of teaching projector servicing unit, especially a kind of teaching hoisting box for projection instrument structure of improvement.
Background technology
In university multimedia teaching, multimedia hardware facility has all been installed in the classroom of a lot of colleges and universities, can substantially increase quality of instruction like this.Not only facilitate teacher and utilize giving lessons of this platform, and improve the understandability to things of student by media such as picture, sound, videos; Along with popularizing of multimedia teaching, heavy multimedia soft hardware maintenance work also increases thereupon, although maintenance calculations machine Comparision is important, the daily servicing of projector also should not be underestimated.Under normal circumstances, in order to save space, projector generally hangs on roof by suspension equipment.Suspension equipment function singleness, only plays the effect of fixedly putting projector.In its suspension equipment, modal, a class is suspension bracket, and it is only used to heat radiation, and by projector and all exposed roof that is suspended on of suspension bracket, therefore suspension bracket and projector are very easily stolen; Another kind of is box, and projector is placed in comparatively airtight box, and therefore box has the effect of dust-and theft-proof.But projector is positioned at eminence, is in for a long time in high temperature gas flow environment and works, easily occur the phenomenons such as deadlock, the less stable of projector work.Therefore current box greatly have impact on the heat radiation of projector, decreases the serviceable life of projector.
Chinese utility model patent CN203759409U discloses a kind of Novel projector box, achieves dust-proof effect while providing heat sinking function.But the box of this structure is the same with device similar in prior art, its dust reduction capability realizes by arranging the filtration unit such as Air Filter or filter cotton.This dustproof construction be sacrifice the flow velocity of radiating airflow and the basis of flow on realize dust-proof, and need periodic replacement, use inconvenience.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of teaching hoisting box for projection instrument structure of improvement, can solve the deficiencies in the prior art, without the need to arranging filtration unit, realizes the clean of box inside.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of teaching hoisting box for projection instrument structure of improvement, comprise the box main body for installing projector, box body top is provided with for fixing mounting hole on the ceiling, box bottom part body is provided with the base plate for dismounting projector, the bottom of described box main body is also provided with air inlet casing, precipitation chamber is provided with in air inlet casing, the sidewall in precipitation chamber is provided with draft tube, draft tube extends to the outside of air inlet casing, the top in precipitation chamber is provided with the snorkel of UNICOM's box main body, snorkel is provided with axial flow blower, the internal diameter of the snorkel of axial flow blower air inlet side is greater than the snorkel internal diameter of side of giving vent to anger, snorkel is provided with several baffle plates tilting to install with the below of precipitation chamber interface, the bottom surface in precipitation chamber is provided with several through the reducing precipitating chamber and air inlet casing, the both sides of box main body are provided with venting flow path, venting flow path is connected with snorkel, the lateral wall of venting flow path is provided with the slit through with the external world, the outer of slit is provided with the fair water fin in air current flow direction in venting flow path, venting flow path madial wall is provided with several air holes, the arranged outside of venting flow path has and air hole heat transmission fin one to one, and the bottom that heat transmission fin connects with venting flow path is provided with bending curved portions.
As preferably, the bottom of described reducing is provided with U-shaped pipe.
As preferably, the lower surface of described baffle plate is provided with oven wire mesh blanket.
As preferably, described heat transmission fin both sides are provided with the side wing tilted towards air flow direction.
The beneficial effect adopting technique scheme to bring is: the utility model is by improving the passage of gas circulation, the kinetic energy utilizing gas itself to flow realizes active cleaning to box inside, realize the constantly outer row of the inner dust of box, thus do not need to install any filtration unit additional at air intake opening and gas outlet, avoid the loss for radiating airflow flow velocity and flow, improve radiating effect, can using for a long time, without the need to regularly box being pulled down replacing filtrator from ceiling simultaneously.Radiating airflow flows into from draft tube, first enters precipitation chamber.Because precipitation cavity volume is large, the air-flow velocity entering precipitation chamber declines rapidly, realizes the preliminary sedimentation of dust in its air-flow.Bottom air-flow containing more dust is arranged outward by reducing gradually.Air-flow through precipitation chamber flows into box main body from snorkel, and baffle plate can reduce the impact of flowing for precipitation chamber of air-flow in snorkel.Axial flow blower accelerates the air-flow entering box main body, makes it obtain higher flow velocity.Snorkel different internal diameter in axial flow blower both sides can reduce the accelerating effect of axial flow blower to the impact of precipitation intracavity gas, keeps air-flow velocity lower in precipitation chamber.After air-flow flows into the venting flow path in box, utilize the flowing of its high speed to produce negative pressure, the air of both sides is drawn.For the outside of venting flow path, extraneous air enters venting flow path by slit, thus improves the flow of the radiating airflow in venting flow path, and fair water fin can reduce the mutual interference of air-flow and the air-flow originally in venting flow path flowed into from outside.For the inner side of venting flow path, air in box flows into venting flow path by air hole under the effect of attractive force, under the guide functions of heat transmission fin, forms the regions of turbulent flow circulated in box, dust in box is purged, and then takes away box by air hole.Heat transmission fin can also add air flow to heat radiation contact area simultaneously, improves radiating effect.What U-shaped pipe can reduce when equipment does not use external dust pours in down a chimney phenomenon.Oven wire mesh blanket can carry out second adsorption when airflow passes baffle plate to the dust in air-flow.The air-flow of regions of turbulent flow and the interphase interaction of heat transmission fin, fin can be made to produce vibration, thus produce noise, side wing can play the effect of water conservancy diversion, reduces the direct rigid impact of regions of turbulent flow air-flow and heat transmission fin, reduces the generation of vibration and noise.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the utility model embodiment.
Fig. 2 is the structural drawing of air inlet casing in the utility model embodiment.
Fig. 3 is the structural drawing of venting flow path in the utility model embodiment.
Fig. 4 is the sectional view of heat transmission fin in the utility model embodiment.
Fig. 5 is the circuit diagram of stop valve and blind in the utility model embodiment.
In figure: 1, box main body; 2, mounting hole; 3, base plate; 4, air inlet casing; 5, chamber is precipitated; 6, draft tube; 7, snorkel; 8, axial flow blower; 9, baffle plate; 10, reducing; 11, venting flow path; 12, slit; 13, fair water fin; 14, air hole; 15, heat transmission fin; 16, curved portions; 17, U-shaped pipe; 18, oven wire mesh blanket; 19, side wing; 20, stop valve; 21, blind.
Embodiment
The standardized element used in the utility model all can be commercially, shaped piece all can carry out customized according to instructions with the record of accompanying drawing, the concrete connected mode of each part all adopts the conventional means such as bolt, rivet, welding, stickup ripe in prior art, is not described in detail in this.
With reference to Fig. 1-5, the utility model embodiment comprises the box main body 1 for installing projector, box main body 1 top is provided with for fixing mounting hole 2 on the ceiling, the base plate 3 for dismounting projector is provided with bottom box main body 1, the bottom of described box main body 1 is also provided with air inlet casing 4, precipitation chamber 5 is provided with in air inlet casing 4, the sidewall in precipitation chamber 5 is provided with draft tube 6, draft tube 6 extends to the outside of air inlet casing 4, the top in precipitation chamber 5 is provided with the snorkel 7 of UNICOM's box main body 1, snorkel 7 is provided with axial flow blower 8, the internal diameter of the snorkel 7 of axial flow blower 8 air inlet side is greater than snorkel 7 internal diameter of side of giving vent to anger, snorkel 7 is provided with several baffle plates 9 tilting to install with the below of precipitation chamber 5 interface, the bottom surface in precipitation chamber 5 is provided with several through the reducing 10 precipitating chamber 5 and air inlet casing 4, the both sides of box main body 1 are provided with venting flow path 11, venting flow path 11 is connected with snorkel 7, the lateral wall of venting flow path 11 is provided with the slit 12 through with the external world, the outer of slit 12 is provided with the fair water fin 13 in air current flow direction in venting flow path 11, venting flow path 11 madial wall is provided with several air holes 14, the arranged outside of venting flow path 11 has and air hole 14 heat transmission fin 15 one to one, and the bottom that heat transmission fin 15 connects with venting flow path 11 is provided with bending curved portions 16.Radiating airflow flows into from draft tube 6, first enters precipitation chamber 5.Because precipitation chamber 5 volume is large, the air-flow velocity entering precipitation chamber 5 declines rapidly, realizes the preliminary sedimentation of dust in its air-flow.Bottom air-flow containing more dust is gradually by the outer row of reducing 10.Air-flow through precipitation chamber 5 flows into box main body 1 from snorkel 7, and baffle plate 9 can reduce the impact of flowing for precipitation chamber 5 of air-flow in snorkel 7.Axial flow blower 8 accelerates the air-flow entering box main body 1, makes it obtain higher flow velocity.The different internal diameter of axial flow blower 1 both sides snorkel 7 can reduce the accelerating effect of axial flow blower 8 to the impact of gas in precipitation chamber 5, keeps air-flow velocity lower in precipitation chamber 5.After air-flow flows into the venting flow path 11 in box, utilize the flowing of its high speed to produce negative pressure, the air of both sides is drawn.For the outside of venting flow path 11, extraneous air enters venting flow path 11 by slit 12, thus improving the flow of the radiating airflow in venting flow path 11, fair water fin 13 can reduce the mutual interference of air-flow and the air-flow originally in venting flow path 11 flowed into from outside.For the inner side of venting flow path 11, air in box flows into venting flow path 11 by air hole 14 under the effect of attractive force, under the guide functions of heat transmission fin 15, the regions of turbulent flow circulated is formed in box, dust in box is purged, and then takes away box by air hole 14.Heat transmission fin 15 can also add air flow to heat radiation contact area simultaneously, improves radiating effect.The bottom of reducing 10 is provided with U-shaped pipe 17, and that can reduce when equipment does not use external dust pours in down a chimney phenomenon.The lower surface of baffle plate 9 is provided with oven wire mesh blanket 18, can carry out second adsorption when airflow passes baffle plate 9 to the dust in air-flow.Heat transmission fin 15 both sides are provided with the side wing 19 tilted towards air flow direction, the air-flow of regions of turbulent flow and the interphase interaction of heat transmission fin 15, heat transmission fin 15 can be made to produce vibration, thus generation noise, side wing 19 can play the effect of water conservancy diversion, reduce the direct rigid impact of regions of turbulent flow air-flow and heat transmission fin 15, reduce the generation of vibration and noise.
The ratio of the internal diameter of snorkel 7 before and after axial flow blower 8 is 3: 1, and baffle plate 9 is fixed in precipitation chamber 5 by bracing frame (not shown).
In addition, draft tube 6 and snorkel 7 are respectively provided with a stop valve 20, inside slit, are provided with blind 21.Stop valve 20 and axial flow blower 8 are connected directly between on the power switch of projector, and blind 21 disconnects normally closed contact by time delay and is connected on the power switch of projector.When projector is started working, stop valve 20 and blind 21 are opened, and axial flow blower 8 is started working simultaneously, dispels the heat; When projector cuts out, stop valve 20 and axial flow blower 8 are closed, because projector temperature operationally itself is higher, the heat radiation of a period of time is needed to reduce temperature, so blind stays open state a period of time, meet the cooling requirements after projector closedown, delay time is preferably 1min.Blind 21 elects the QD1500 electric shutter blind of Fei Yate sunshade science and technology (Beijing) company limited as, the MS-145 electric check valve of Hebei Parker's valve industry elected as by stop valve 20, and axial flow blower 8 elects the XBDZ series axis flow fan of Zhejiang Shang Jian blower fan company limited as.
Wherein, the utility model be the patent documentation quoted in the introduction basis on improve, to have carried out open fully in the patent documentation that the basic structure of hoisting box for projection instrument and using method are quoted in the introduction, be not described in detail in this.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. the teaching hoisting box for projection instrument structure improved, comprise the box main body (1) for installing projector, box main body (1) top is provided with for fixing mounting hole (2) on the ceiling, box main body (1) bottom is provided with the base plate (3) for dismounting projector, it is characterized in that: the bottom of described box main body (1) is also provided with air inlet casing (4), precipitation chamber (5) is provided with in air inlet casing (4), the sidewall of precipitation chamber (5) is provided with draft tube (6), draft tube (6) extends to the outside of air inlet casing (4), the top of precipitation chamber (5) is provided with the snorkel (7) of UNICOM's box main body (1), snorkel (7) is provided with axial flow blower (8), the internal diameter of the snorkel (7) of axial flow blower (8) air inlet side is greater than snorkel (7) internal diameter of side of giving vent to anger, snorkel (7) is provided with several baffle plates (9) tilting to install with the below of precipitation chamber (5) interface, the bottom surface of precipitation chamber (5) is provided with several through the reducing (10) precipitating chamber (5) and air inlet casing (4), the both sides of box main body (1) are provided with venting flow path (11), venting flow path (11) is connected with snorkel (7), the lateral wall of venting flow path (11) is provided with the slit (12) through with the external world, the outer of slit (12) is provided with towards the fair water fin (13) in the interior air current flow direction of venting flow path (11), venting flow path (11) madial wall is provided with several air holes (14), the arranged outside of venting flow path (11) has and air hole (14) heat transmission fin (15) one to one, the bottom that heat transmission fin (15) connects with venting flow path (11) is provided with bending curved portions (16).
2. the teaching hoisting box for projection instrument structure of improvement according to claim 1, is characterized in that: the bottom of described reducing (10) is provided with U-shaped pipe (17).
3. the teaching hoisting box for projection instrument structure of improvement according to claim 1, is characterized in that: the lower surface of described baffle plate (9) is provided with oven wire mesh blanket (18).
4. the teaching hoisting box for projection instrument structure of improvement according to claim 1, is characterized in that: described heat transmission fin (15) both sides are provided with the side wing (19) tilted towards air flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605971.4U CN204116799U (en) | 2014-10-20 | 2014-10-20 | A kind of teaching hoisting box for projection instrument structure of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605971.4U CN204116799U (en) | 2014-10-20 | 2014-10-20 | A kind of teaching hoisting box for projection instrument structure of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204116799U true CN204116799U (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420605971.4U Expired - Fee Related CN204116799U (en) | 2014-10-20 | 2014-10-20 | A kind of teaching hoisting box for projection instrument structure of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204116799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110032029A (en) * | 2019-04-09 | 2019-07-19 | 张子辉 | A kind of projector that the radiating efficiency with dedusting function is high |
-
2014
- 2014-10-20 CN CN201420605971.4U patent/CN204116799U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110032029A (en) * | 2019-04-09 | 2019-07-19 | 张子辉 | A kind of projector that the radiating efficiency with dedusting function is high |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20151020 |
|
| EXPY | Termination of patent right or utility model |