CN112684655B - Impurity cleaning method, device and system for projector and projector - Google Patents
Impurity cleaning method, device and system for projector and projector Download PDFInfo
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- CN112684655B CN112684655B CN202011587693.0A CN202011587693A CN112684655B CN 112684655 B CN112684655 B CN 112684655B CN 202011587693 A CN202011587693 A CN 202011587693A CN 112684655 B CN112684655 B CN 112684655B
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Abstract
The embodiment of the invention provides a projector and an impurity processing method, a device and a system thereof, relating to the technical field of projection, wherein the method comprises the following steps: acquiring a first temperature value inside the shell and a second temperature value outside the shell; and sending a first command under the condition that the relative relation between the first temperature value and the second temperature value meets a first preset condition, wherein the first command is used for controlling a cleaning device to start so as to clean impurities at the air inlet. The projector and the impurity processing method, device and system thereof provided by the embodiment of the invention can automatically detect whether the air inlet of the shell is blocked, automatically clean impurities such as dust and hair at the air inlet when the blockage is detected, dredge the air inlet, ensure that sufficient air enters the projector, further ensure the heat dissipation effect and performance of the projector, avoid the damage of the projector and put an end to potential safety hazard.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a projector and an impurity processing method, device and system thereof.
Background
A projector is a device that projects digital images onto a screen. With the continuous development of projector technology (mainly resolution, brightness and use convenience), the acceptance of people to projectors is higher and higher, the application fields of the projectors are wider and wider, and the projectors can be seen from families to different public places.
The projecting apparatus can produce the heat because of components and parts such as its inside light source, power, circuit at the during operation, need set up the fan and inhale the inside heat dissipation that dispels of projecting apparatus with the outside air, but along with live time's lapse, impurity such as dust in the air, hair can gather gradually and become the jam in the air intake department of projecting apparatus, lead to getting into the inside air of projecting apparatus less and less, the radiating effect variation to the projecting apparatus performance can lead to the projecting apparatus to damage even, brings the potential safety hazard.
Disclosure of Invention
The invention aims to provide a method, a device and a system for cleaning impurities of a projector and the projector, which can automatically judge whether an air inlet is blocked and automatically clean the air inlet when the air inlet is blocked.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides a method for cleaning impurities in a projector, where the projector includes a housing having an air inlet, the method including:
acquiring a first temperature value inside the shell and a second temperature value outside the shell;
and sending a first command under the condition that the relative relation between the first temperature value and the second temperature value meets a first preset condition, wherein the first command is used for controlling a cleaning device to start so as to clean impurities at the air inlet.
In an optional embodiment, after the step of sending the first command, the method further includes:
and sending a second command under the condition that the relative relation between the first temperature value and the second temperature value meets a second preset condition, wherein the second command is used for controlling the cleaning device to stop.
In an alternative embodiment, the second preset condition includes:
and the difference value between the first temperature value and the second temperature value is less than or equal to a second preset threshold value.
In an alternative embodiment, the first preset condition includes:
and the difference value of the first temperature value and the second temperature value is greater than or equal to a first preset threshold value.
In a second aspect, the present invention provides an apparatus for cleaning impurities in a projector, where the projector includes a housing provided with an air inlet, the apparatus including:
the receiving module is used for receiving the first temperature value inside the shell and the second temperature value outside the shell transmitted by the detecting module;
the first judgment module is used for determining that the relative relation between the first temperature value and the second temperature value meets a first preset condition;
the first sending module is used for sending a first command, and the first command is used for controlling the cleaning device to start so as to clean impurities at the air inlet.
In an alternative embodiment, the method further comprises:
the second judgment module is used for determining that the relative relationship between the first temperature value and the second temperature value meets a second preset condition;
and the second sending module is used for sending a second command, wherein the second command is used for controlling the cleaning device to stop.
In an optional embodiment, the second determining module is configured to determine that a difference between the first temperature value and the second temperature value is smaller than or equal to a second preset threshold.
In an optional implementation manner, the first determining module is configured to determine that a difference between the first temperature value and the second temperature value is greater than or equal to a first preset threshold.
In a third aspect, the present invention provides a system for cleaning impurities of a projector, the projector including a housing provided with an air inlet, the system including:
the first detection element is arranged in the shell and used for detecting a first temperature value in the shell;
the second detection element is arranged outside the shell and used for detecting a second temperature value outside the shell;
a cleaning device provided in the housing;
and a controller electrically connected to the first detection element, the second detection element and the cleaning device, for executing the method of cleaning the impurities of the projector according to any one of the foregoing embodiments.
In an alternative embodiment, the sweeping device is disposed outside the housing.
In an alternative embodiment, the sweeping device comprises:
the support is movably arranged on the shell and forms an accommodating cavity with the shell in an enclosing manner, wherein the support is provided with a dust outlet communicated with the air inlet;
the dust removal mechanism is arranged in the accommodating cavity, corresponds to the dust outlet, is electrically connected with the controller and is used for cleaning impurities at the air inlet;
and the driving mechanism is electrically connected with the controller and is used for driving the support to move on the shell, so that the area swept by the dust removing mechanism completely covers the area of the air inlet.
In an alternative embodiment, the method further comprises:
and the adsorption device is arranged corresponding to the dust outlet, is electrically connected with the controller and is used for adsorbing and collecting impurities discharged from the dust outlet.
In an alternative embodiment, the adsorption device comprises:
the fixing frame is arranged on the support;
the fan is arranged at the position of the fixed frame, which is far away from the dust outlet, and is electrically connected with the controller;
the dust collector is arranged on the fixing frame and positioned between the dust outlet and the air suction opening of the fan and used for collecting impurities through air flow.
In an alternative embodiment, the dust collector includes:
the fixing piece is arranged on the fixing frame, the fixing piece is provided with an air channel, one end of the air channel is communicated with the dust outlet, and the other end of the air channel corresponds to the air suction opening of the fan;
and the filtering piece is arranged in the air duct.
In an alternative embodiment, the filter element comprises:
the first filter screen is arranged between the dust outlet and the air suction opening of the fan and used for coarse filtration;
the second filter screen is arranged between the first filter screen and the air suction opening of the fan and used for fine filtration.
In an alternative embodiment, the dust collector further comprises:
and the flow guide piece is arranged in the air duct and is positioned between the dust outlet and the filtering piece.
In an alternative embodiment, the flow guide member has a passage, one end of the passage communicates with the dust outlet, and the other end of the passage extends in a direction away from the dust outlet and toward the filter member, wherein a sectional area of the passage is gradually reduced in the extending direction.
In an alternative embodiment, the fixing frame is detachably disposed on the support.
In an alternative embodiment, the dust collector is detachably provided to the fixing frame.
In an alternative embodiment, the dust removing mechanism comprises:
the dust removal piece is rotatably arranged on the support and corresponds to the dust outlet;
the first driving piece is arranged on the support, is electrically connected with the controller and is used for driving the dust removal piece to rotate.
In an optional embodiment, the support includes a first plate, and a second plate, a third plate, a fourth plate, and a fifth plate sequentially connected to an edge of the first plate, and the first plate, the third plate, the fourth plate, the fifth plate and the housing enclose to form the accommodating cavity; the first plate body is provided with the dust outlet.
In an alternative embodiment, the housing is provided with a rotating shaft, the support is rotatably connected to the rotating shaft, and the driving mechanism is used for driving the support to rotate around the rotating shaft.
In an alternative embodiment, the drive mechanism comprises:
the second driving piece is arranged on the support;
and the transmission part is connected between the output end of the second driving part and the rotating shaft.
In a fourth aspect, the present invention provides a projector including the impurity cleaning system of the projector according to any one of the foregoing embodiments.
The beneficial effects of the embodiment of the invention include, for example: receive this first temperature value and second temperature value, and judge whether the relative relation of first temperature value and second temperature value accords with first preset condition, if accord with then explain the inside air that gets into the projecting apparatus less, and then can judge that the air intake department impurity of casing is too much, it is serious to block up, this moment, send the first order that control cleaning device started, cleaning device clears up the impurity of air intake department then, dredge the air intake, it is inside to guarantee to have the capacity air admission projecting apparatus, and then guarantee the radiating effect and the performance of projecting apparatus, avoid the projecting apparatus to damage, stop the potential safety hazard.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a housing according to an embodiment of the present invention;
FIG. 3 is a schematic view of the interior of the housing in an embodiment of the present invention;
FIG. 4 is a top view of FIG. 1;
FIG. 5 is a sectional view taken along line G-G of FIG. 4;
FIG. 6 is a schematic structural view of a cleaning device and an adsorbing device in an embodiment of the present invention;
FIG. 7 is a schematic view of the internal structure of the cleaning apparatus according to the embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a support in an embodiment of the present invention;
FIG. 9 is an exploded view of a sweeping device in an embodiment of the present invention;
FIG. 10 is a schematic view showing the internal structure of an adsorption apparatus according to an embodiment of the present invention;
FIG. 11 is a logic flow diagram of a contaminant removal method in accordance with an embodiment of the present invention.
An icon: 100-a housing; 110-an air inlet; 120-air outlet; 130-a first detection element; 140-a second detection element; 150-a rotating shaft; 200-a cleaning device; 210-a support; 211-a first plate body; 2110-dust outlet; 2111-grooves; 2112-a through hole; 212-a second plate body; 213-a third plate body; 214-a fourth plate body; 215-a fifth plate body; 220-a dust removal mechanism; 221-a dust removal piece; 222-a separator; 223-a first drive member; 224-a connecting plate; 225-a connecting rod; 230-a drive mechanism; 231-a second drive member; 232-a transmission member; 300-an adsorption device; 310-a mount; 311-a box body; 320-a fan; 330-a dust collector; 331-a fixture; 332-a filter element; 3321-a first filter screen; 3322-a second filter; 333-a flow guide part;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
According to an embodiment of the present invention, a projector is provided, which mainly includes a casing 100 and an impurity processing system, where the casing 100 mainly plays a role in protection and accommodation, and a plurality of components are generally disposed in the casing 100, such as: light source, display screen, power, control mainboard etc.. The housing 100 is provided with an inlet 110 and an outlet 120. In this embodiment, referring to fig. 1 and fig. 2, the housing 100 is square, the air inlet 110 is disposed on the upper surface of the housing 100 in an annular hollow shape, and the air outlet 120 is disposed on the left side wall of the housing 100 in a square shape.
The impurity treatment system mainly comprises a controller, and a first detection element 130, a second detection element 140 and a cleaning device 200 which are electrically connected with the controller.
The first detecting element 130 is disposed inside the housing 100, and configured to detect a first temperature value T1 inside the housing 100 and send data of the first temperature value to the controller. The second detecting element 140 is disposed outside the housing 100, and is configured to detect a second temperature value T2 outside the housing 100 and send data of the second temperature value to the controller. Specifically, which position of the first detection element 130 is disposed outside the housing 100 is not particularly limited as long as the temperature outside the housing 100 can be detected. The specific location of the second detection element 140 within the housing 100 is also not particularly limited as long as the temperature within the housing 100 can be detected.
Referring to fig. 3 and 4, in the present embodiment, the first detecting element 130 is disposed at the upper right corner of the outer surface of the upper plate of the casing 100, and the second detecting element 140 is disposed at the approximate middle position of the inner surface of the bottom plate of the casing 100, which is only a preferred arrangement manner, and is only for more accurately detecting the temperature outside and inside the casing 100. In the present embodiment, the first detecting element 130 and the second detecting element 140 are both temperature sensors.
The controller is generally disposed inside the casing 100 and integrated on a control main board (not shown) of the projector. The controller is electrically connected to the first detecting element 130, the second detecting element 140 and the cleaning device 200, and is configured to receive a first temperature value T1 transmitted from the first detecting element 130 and a second temperature value T2 transmitted from the second detecting element 140, and determine whether a relative relationship between the first temperature value T1 and the second temperature value T2 meets a first preset condition, and send a first command when the relative relationship between the first temperature value T1 and the second temperature value T2 meets the first preset condition, where the first command is used to control the cleaning device 200 to start up to clean up impurities such as dust and hair at the air inlet 110 on the housing 100.
Specifically, the controller is configured to send the first command when a difference Δ = T1-T2 between the first temperature value T1 and the second temperature value T2 is greater than or equal to a first preset threshold value T1.
Along with the operation of the cleaning device 200, the controller is further configured to determine whether a relative relationship between the first temperature value T1 and the second temperature value T2 meets a second preset condition, and send a second command when the relative relationship between the first temperature value T1 and the second temperature value T2 meets the second preset condition, where the second command is used to control the cleaning device 200 to stop.
Specifically, the controller is configured to send a second command when a difference Δ T = T1-T2 between the first temperature value T1 and the second temperature value T2 is less than or equal to a second preset threshold value T2.
It is understood that the first preset threshold and the second preset threshold may be set according to the use environment of the projector according to practical situations. For example, in certain circumstances, the first predetermined threshold may range from 15 to 25 ℃ and the second predetermined threshold may range from 0 to 10 ℃. Optionally, the first preset threshold is set to 20 ℃, the second preset threshold is set to 5 ℃, and when the temperature difference T1-T2 is greater than or equal to the first preset threshold of 20 ℃, which indicates that the air inlet 110 is seriously blocked, a first command is issued to control the cleaning device 200 to start. Along with the operation of the cleaning device 200, the wind power entering from the wind inlet 110 gradually increases, the temperature T2 inside the housing 100 gradually decreases, and when the temperature difference T1-T2 is less than or equal to the second preset threshold value of 5 ℃, it indicates that the impurities at the wind inlet 110 are basically cleaned, and at this time, a second command is sent to control the cleaning device 200 to stop.
It should be noted that the ranges and specific values of the first preset threshold and the second preset threshold are only one embodiment under a specific environment, and do not represent that in other embodiments, the first preset threshold and the second preset threshold can only be values within the above exemplary ranges, that is, the specific values of the first preset threshold and the second preset threshold can be flexibly adjusted according to different specific environments.
In this embodiment, the cleaning device 200 is disposed outside the casing 100 and located on the same side of the casing 100 as the air inlet 110. The sweeping device 200 mainly includes a holder 210, a dust removing mechanism 220, and a driving mechanism 230.
The holder 210 mainly serves to accommodate and support the fixing, and is movably disposed to the housing 100. The holder 210 has a substantially square hollow structure and is divided into a first plate 211, and a second plate 212, a third plate 213, a fourth plate 214, and a fifth plate 215 sequentially connected to each edge of the first plate 211. The first plate 211, the second plate 212, the third plate 213, the fourth plate 214, the fifth plate 215 and the housing 100 enclose a receiving cavity.
Referring to fig. 5 to 8, the first plate 211 is disposed parallel to the surface of the housing 100 where the air inlet 110 is located. The first plate 211 has a longitudinal section in a longitudinal direction thereof substantially stepped, and includes a first portion distant from the housing 100 and a second portion close to the housing 100, and the first portion of the first plate 211 is provided with a dust outlet 2110. The second plate 212, the third plate 213, the fourth plate 214, the fifth plate 215 and the first plate 211 are substantially perpendicular to each other. The upper edge of the second plate 212 is integrally connected to the left edge (i.e., the left edge of the first portion) of the first plate 211; the upper edge of the third plate 213 is integrally connected to the front edge of the first plate 211; the upper edge of the fourth plate body 214 is integrally connected to the right edge (i.e., the right edge of the second portion) of the first plate body 211; the upper edge of the fifth plate body 215 is integrally connected to the rear edge of the first plate body 211; the lower edges of the second plate 212, the third plate 213 and the fifth plate 215 extend toward the casing 100 with a slight gap from the casing 100, so that the support 210 can move on the casing 100. In other embodiments, the first plate 211, the second plate 212, the third plate 213, the fourth plate 214, and the fifth plate 215 may be connected in a split manner.
In this embodiment, the housing 100 is provided with a rotating shaft 150, and the support 210 is rotatably connected to the rotating shaft 150.
Specifically, referring to fig. 9, a stepped through hole 2112 is further disposed at a first portion of the first plate 211, a portion of the through hole 2112 with a smaller diameter is far away from the housing 100, and a bearing is fixed at a portion of the through hole 2112 with a larger diameter. The shaft 150 may be divided into a journal, a first shaft body, a shoulder, and a second shaft body, which are integrally connected in sequence. The housing 100 is formed with a mounting hole concentric with the inlet 110, and a journal portion of the rotation shaft 150 is inserted into and fixedly coupled with the mounting hole. The second shaft portion of the shaft 150 is fixedly connected to the inner race of the bearing.
Accordingly, the holder 210 can rotate about the axis of the rotation shaft 150 by an external force. The end face of the second shaft body part of the rotating shaft 150 is also provided with an interface for connecting a projector hoisting rod, so that the projector can be hoisted on a ceiling or a wall.
In this embodiment, the dust removing mechanism 220 is disposed in the accommodating cavity, corresponds to the dust outlet 2110, and is electrically connected to the controller, and the controller controls to clean the impurities at the air inlet 110 of the housing 100 when the temperature inside and outside the housing 100 meets the condition.
Further, the dust removing mechanism 220 includes a dust removing member 221 and a first driving member 223. The dust removing member 221 is rotatably disposed on the support 210 and corresponds to the dust outlet 2110. The first driving member 223 is mounted on the support 210, is located in the accommodating cavity formed by the support 210 and the casing 100, and is electrically connected to the controller to drive the dust removing member 221 to rotate.
The first plate 211 extends toward the housing 100 at a position between the inlet 110 and the rotating shaft 150 to form a partition 222, and the partition 222 is opposite to the second plate 212. The first driving member 223 is a motor, and is electrically connected to the controller through a connecting plate 224 and is mounted on the side of the first plate 211 close to the housing 100. The output end of the first driving member 223 passes through the partition plate 222 and then points to the second plate 212, wherein an annular gap is left between the output end of the first driving member 223 and the partition plate 222. A connecting rod 225 is disposed between the second plate 212 and the partition 222, one end of the connecting rod 225 is fixedly connected to the output end of the first driving member 223, and the other end of the connecting rod 225 is rotatably inserted into the second plate 212. The dust removing member 221 is an object capable of cleaning, such as a dust removing brush or a dust removing cloth, and is wound around the connecting rod 225. Therefore, when the temperature relationship inside and outside the housing 100 meets the condition, the first driving member 223 is started by receiving a first command from the controller to drive the dust removing member 221 to rotate, so as to clean the impurities at the air inlet 110 of the housing 100, and the cleaned impurities can be discharged from the dust outlet 2110; meanwhile, the partition 222 can partition the first driving member 223 from the dust removing member 221, thereby preventing impurities swept by the dust removing member 221 from entering the inside of the first driving member 223, resulting in damage to the first driving member 223.
In this embodiment, the driving mechanism 230 is disposed on the support 210 and electrically connected to the controller, for driving the support 210 to move on the casing 100, so that the area swept by the dust removing mechanism 220 completely covers the area of the air inlet 110.
The driving mechanism 230 includes a second driving member 231 and a transmission member 232. Specifically, the second driving member 231 may be a motor, which is mounted on the second portion of the first board 211 and electrically connected to the controller. The output end of the second driving member 231 passes through the second portion of the first plate 211 along a direction parallel to the rotating shaft 150 and then extends into the receiving cavity. The transmission member 232 is connected between the output end of the second driving member 231 and the rotating shaft 150 for transmitting torque, in this embodiment, the transmission member 232 is two gears meshed with each other, one gear is fixedly connected to the output end of the second driving member 231 as an input portion, and the other gear is fixedly connected to the first shaft body portion of the rotating shaft 150 as an output portion. Therefore, when the air inlet 110 needs to be cleaned, the second driving element 231 is started, the torque of the second driving element 231 is transmitted to the rotating shaft 150, and because the rotating shaft 150 is fixedly connected with the casing 100, the support 210 rotates around the rotating shaft 150, and meanwhile, the first driving element 223 is started to drive the dust removing element 221 to rotate, so that impurities such as dust, hair and the like at the air inlet 110 on the casing 100 are cleaned. In other embodiments, the transmission 232 may also be a chain, belt drive.
In this embodiment, the projector further includes an adsorption device 300, and the adsorption device 300 is disposed corresponding to the dust outlet 2110 and electrically connected to the controller for collecting impurities such as dust and hair from the dust outlet 2110. The adsorption device 300 mainly includes a fixing frame 310, a fan 320, and a dust collector 330.
In the present embodiment, the fixing frame 310 is disposed on the support 210. Specifically, referring to fig. 10, the support 210 is provided with an annular groove 2111 around the dust outlet 2110 outside the dust outlet 2110, and the shape of the groove 2111 matches the shape of the boundary of the dust outlet 2110, that is, the groove 2111 is arranged around the circumference of the dust outlet 2110. The fixing frame 310 has a tubular structure, and an inner ring boundary along a cross section perpendicular to a length direction thereof completely covers a boundary of the dust outlet 2110. One end of the fixing frame 310 is inserted into the groove 2111, so that the fixing frame 310 is detachably connected with the support 210; the other end of the fixing frame 310 extends away from the dust outlet 2110 along a direction perpendicular to the plate plane of the first plate 211; the fixing frame 310 communicates with the dust outlet 2110. In this embodiment, since the dust outlet 2110 is circular, the groove 2111 has a circular ring shape.
In this embodiment, the fan 320 is disposed at a position of the fixing frame 310 far away from the dust outlet 2110 and electrically connected to the controller, and the fixing frame 310 is further provided with a vent at a position corresponding to the air outlet of the fan 320. Specifically, the other end of the fixing frame 310 is provided with a box 311, and the bottom of the box 311 is provided with an opening communicated with the other end of the fixing frame 310, and the area of the opening is smaller than the area of the port at the other end of the fixing frame 310. The blower 320 is installed in the box 311, and its air suction opening is corresponding to the other end of the fixing frame 310 and faces the dust outlet 2110. The box 311 is provided with a mesh vent at a position corresponding to the air outlet of the fan 320, so that the fan 320 can suck up impurities such as dust and hair discharged from the air outlet 120 from the bottom to the top. In this embodiment, the blower 320 is a tangential flow blower 320, and thus, the air vents of the holder 310 are provided at the sides thereof. Of course, in other embodiments, the fan 320 may also be an axial flow fan 320, and at this time, the vent may be opened at the top of the box 311.
In this embodiment, the dust collector 330 is disposed on the fixing frame 310 and between the dust outlet 2110 and the air suction opening of the fan 320 for passing the air flow and collecting the impurities. The dust collector 330 mainly includes a fixing member 331 and a filter member 332. The fixing member 331 has an air duct disposed on the fixing frame 310, one end of the air duct is communicated with the dust outlet 2110, and the other end of the air duct corresponds to the air suction port of the fan 320. In this embodiment, the fixing member 331 is tubular, and the air duct is an inner tube hole of the fixing member 331. The fixing member 331 is disposed inside the fixing frame 310, and an outer wall of the fixing member 331 is attached to an inner wall of the fixing frame 310, wherein one end of the fixing member 331 abuts against the first plate 211; the other end of the fixing member 331 extends in a direction away from the dust outlet 2110 and abuts against the bottom of the box 311 at the other end of the fixing frame 310, corresponding to the air suction opening of the fan 320, thereby realizing the detachable connection of the dust collector 330 and the fixing frame 310. In other embodiments, the end of the fixing member 331 communicating with the dust outlet 2110 is inserted into the groove 2111 outside the dust outlet 2110. The fixing member 331 may be integrally connected to the fixing frame 310.
In the present embodiment, the filter 332 is disposed in the air duct of the fixing member 331. Mainly comprising a first filter 3321 and a second filter 3322. The first filter screen 3321 is disposed in the fixing member 331 between the dust outlet 2110 and the suction opening of the blower 320, and is used for coarse filtering. Specifically, the outer edge of the first filter 3321 is fixedly connected to the middle portion of the fixing member 331, and the middle portion of the first filter 3321 protrudes in the wind flow direction, i.e., away from the dust outlet 2110, and is close to the air suction opening of the fan 320, so that when the fan 320 is started, large-sized impurities such as dust and/or hair with large particles discharged from the dust outlet 2110 can be filtered.
And a second filter screen 3322 disposed between the first filter screen 3321 and the suction opening of the fan 320 in the fixing member 331, for fine filtering. Specifically, the second filter 3322 extends in a horizontal plane, and an outer edge of the second filter 3322 is fixedly connected to an end of the fixing member 331 away from the dust outlet 2110 and is therefore located between the first filter 3321 and the air suction opening of the fan 320, so that when the fan 320 is started, a large volume of impurities, such as dust and/or hair, with a small volume after coarse filtration through the first filter 3321 can be filtered.
In this embodiment, the dust collector 330 further includes a flow guiding member 333, and the flow guiding member 333 is disposed in the air duct of the fixing member 331 and located between the dust outlet 2110 and the filter member 332. The flow guide 333 has a passage, one end of which is communicated with the dust outlet 2110, and the other end of which extends in the wind flow direction, that is, in a direction away from the dust outlet 2110 and close to the filter member 332, wherein in the extending direction, the port area of the other end of the flow guide 333 is gradually reduced. Specifically, the flow guide member 333 is funnel-shaped, a channel is an inner hole of the flow guide member 333, one end of the flow guide member 333 with a larger caliber is connected to an inner wall of one end of the fixing member 331 close to the dust outlet 2110, and the other end with a smaller caliber extends toward the first filter screen 3321, so that the flow guide member 333 can prevent impurities such as dust, hair and the like discharged from the dust outlet 2110 from being raised, and after the fan 320 is stopped, the impurities fall into an annular collecting groove formed between the flow guide member 333 and the fixing member 331 for storage.
Thus, according to the projector provided by the embodiment, the first detecting element 130, the second detecting element 140, the controller, the cleaning device 200 and the adsorbing device 300 together form a impurity cleaning system, which together realize the cleaning of impurities such as dust and hair at the air inlet 110 on the projector housing 100 and the collection of the cleaned impurities. It should be noted that, in the present embodiment, the fan 320 is controlled by the controller to operate and stop simultaneously with the first driving element 223 and the second driving element 231, that is, the cleaning device 200 and the suction device 300 are operated synchronously. Of course, in other embodiments, the fan 320 may be operated asynchronously, and may be operated all the time after the cleaning device 200 is operated, so as to suck the impurities onto the filter member 332.
The working principle of the projector provided by the embodiment is as follows:
according to the using environment of the projector, for example, the projector is generally hung on a wall or a ceiling, a first preset threshold and a second preset threshold are set in a program, when the projector works, the first detection element 130 detects a first temperature value outside the projector, the second detection element 140 detects a second temperature value inside the projector, and the first detection element 130 and the second detection element 140 respectively send data of the first temperature value T1 and the second temperature value T2 to the controller.
After receiving the data of the first temperature value T1 and the second temperature value T2, the controller determines a difference value Δ T = T1-T2 between the first temperature value T1 and the second temperature value T1, and compares the difference value with a preset first preset threshold value T1.
If the difference Δ T is smaller than the first preset threshold T1, it is determined that the wind entering the projector from the air inlet 110 is sufficient, the heat dissipation effect of the projector is relatively good, and it is determined that the air inlet 110 is not blocked; if the difference value Δ T is greater than or equal to the first preset threshold value T2, it indicates that the wind entering the projector from the air inlet 110 is insufficient, the heat dissipation effect of the projector is poor, and it is determined that the air inlet 110 is seriously blocked.
At this time, the controller sends a first command to control the first driving member 223, the second driving member 231 and the fan 320 to start, the first driving member 223 drives the dust removing member 221 to rotate so as to clean impurities such as dust, hair and the like at the air inlet 110, and the impurities are converted into a free state to be conveniently discharged from the dust outlet 2110; the second driving member 231 drives the support 210 to rotate around the rotating shaft 150, so that the dust removing member 221 moves, and thus the area where the dust removing member 221 passes can completely cover the area of the air inlet 110, and a leakage area is avoided.
Meanwhile, the wind power generated by the fan 320 attracts the impurities discharged from the dust outlet 2110, and the impurities do not rise and gradually collect when passing through the flow guide member 333 under the action of the wind power, and are sequentially filtered and collected by the first filter screen 3321 and the second filter screen 3322.
Along with the work of the cleaning device and the adsorption device 300, the impurities at the air inlet 110 are gradually reduced, the wind power entering the shell 100 is gradually increased, the temperature T2 inside the shell 100 is gradually reduced, and if the delta T is greater than a second preset threshold value T2, it is indicated that the impurities at the air inlet 110 are not cleaned completely, and the impurities need to be cleaned continuously; if Δ T is less than or equal to T2, it indicates that the impurities at the air inlet 110 are substantially completely cleaned, and at this time, the first driving member 223, the second driving member 231 and the fan 320 are stopped, and the impurities collected on the filtering member 332 will fall into the collecting tank between the guiding member 333 and the fixing member 331.
Since the holder 310 is detachably mounted to the holder 210 and the dust container 330 is detachably mounted in the holder 310, the dust container 330 can be removed at regular intervals for cleaning and replacement.
In accordance with an embodiment of the present invention, there is provided a method embodiment of a method for cleaning impurities of a projector, it is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
Fig. 11 is a flowchart of a foreign substance removal method of a projector according to an embodiment of the present invention, the method including the steps of:
step S100, acquiring a first temperature value inside the shell 100 and a second temperature value outside the shell 100;
specifically, the first temperature value T1 inside the housing 100 transmitted from the first detection element 130 and the second temperature value T2 outside the housing 100 transmitted from the second detection element 140 are received.
Step S200, sending a first command under the condition that the relative relation between the first temperature value and the second temperature value meets a first preset condition;
the method specifically includes the steps that firstly, the difference value delta T = T1-T2 between the first temperature value T1 and the second temperature value T2 is determined, then the delta T is compared with a first preset threshold value T1, if the delta T is smaller than or equal to T1, the fact that wind power entering the shell 100 from the air inlet 110 is enough is indicated, the heat dissipation effect of a projector is good, and then the air inlet 110 can be determined to be unblocked; if Δ T is greater than or equal to T1, it indicates that the wind entering the projector from the air inlet 110 is insufficient, the heat dissipation effect of the projector is poor, and it is further determined that the air inlet 110 is seriously blocked, at this time, a first command for controlling the cleaning device 200 to start is sent, so that the cleaning device 200 cleans the impurities at the air inlet 110.
The method also comprises a step S300 of sending a second command when the relative relation between the first temperature value and the second temperature value meets a second preset condition;
specifically, during the operation of the cleaning device 200, the Δ T is continuously compared with a second preset threshold T2, and if the Δ T is greater than or equal to T2, the impurities at the air inlet 110 are not completely cleaned, the cleaning device 200 is continuously operated; when Δ T is less than or equal to the second preset threshold T2, it indicates that the impurities at the air inlet 110 are substantially completely cleaned, and at this time, a second command for controlling the cleaning device 200 to stop is sent.
It is understood that the first preset threshold and the second preset threshold may be set according to the use environment of the projector according to practical situations. For example, in certain circumstances, the first predetermined threshold may range from 15 to 25 ℃ and the second predetermined threshold may range from 0 to 10 ℃. Optionally, the first preset threshold is set to 20 ℃, the second preset threshold is set to 5 ℃, and when the temperature difference T1-T2 is greater than or equal to the first preset threshold of 20 ℃, which indicates that the air inlet 110 is seriously blocked, a first command is issued to control the cleaning device 200 to start. Along with the operation of the cleaning device 200, the wind power entering from the wind inlet 110 gradually increases, the temperature T2 inside the housing 100 gradually decreases, and when the temperature difference T1-T2 is less than or equal to the second preset threshold value of 5 ℃, it indicates that the impurities at the wind inlet 110 are basically cleaned, and at this time, a second command is sent to control the cleaning device 200 to stop.
It should be noted that the ranges and specific values of the first preset threshold and the second preset threshold are only one embodiment under a specific environment, and do not represent that in other embodiments, the first preset threshold and the second preset threshold can only be values within the above exemplary ranges, that is, the specific values of the first preset threshold and the second preset threshold can be flexibly adjusted according to different environments.
According to the embodiment of the present invention, there is also provided an impurity removing apparatus for a projector, the impurity removing apparatus mainly including:
the receiving module is used for receiving a first temperature value inside the shell 100 and a second temperature value outside the shell 100, which are transmitted by the detecting module; specifically, the detection module includes a first detection element 130 and a second detection element 140, the first detection element 130 detects a first temperature value T1 inside the housing 100, and sends the data to the receiving module; the second detection element 140 detects a second temperature value T2 outside the housing 100 and transmits the data to the receiving module.
The first judgment module is used for determining that the relative relationship between the first temperature value and the second temperature value meets a first preset condition; specifically, a difference value Δ T = T1-T2 between the first temperature value T1 and the second temperature value T2 is determined, and then Δ T is compared with a first preset threshold value T1, if Δ T is less than or equal to T1, it is indicated that the wind power entering the housing 100 from the air inlet 110 is sufficient, the heat dissipation effect of the projector is good, and it can be determined that the air inlet 110 is not blocked; if Δ T is greater than or equal to T1, it indicates that the wind entering the projector from the air inlet 110 is insufficient, the heat dissipation effect of the projector is poor, and it is determined that the air inlet 110 is seriously blocked.
The first sending module is configured to send a first command, where the first command is used to control the cleaning device 200 to start up to clean the impurities at the air inlet 110 of the housing 100.
The second judgment module is used for determining that the relative relationship between the first temperature value and the second temperature value meets a second preset condition; during the operation of the cleaning device 200, Δ T is continuously compared with the second preset threshold T2, if Δ T is greater than or equal to T2, the impurities at the air inlet 110 are not completely cleaned, and when Δ T is less than or equal to the second preset threshold T2, it is indicated that the impurities at the air inlet 110 are basically completely cleaned.
A second sending module, configured to send a second command, where the second command is used to control the cleaning apparatus 200 to stop.
It is understood that the first preset threshold and the second preset threshold may be set according to the use environment of the projector according to practical situations. For example, in certain circumstances, the first predetermined threshold may range from 15 to 25 ℃ and the second predetermined threshold may range from 0 to 10 ℃. Optionally, the first preset threshold is set to 20 ℃, the second preset threshold is set to 5 ℃, and when the temperature difference T1-T2 is greater than or equal to the first preset threshold of 20 ℃, which indicates that the air inlet 110 is seriously blocked, a first command is issued to control the cleaning device 200 to start. Along with the operation of the cleaning device 200, the wind power entering from the wind inlet 110 gradually increases, the temperature T2 inside the housing 100 gradually decreases, and when the temperature difference T1-T2 is less than or equal to the second preset threshold value of 5 ℃, it indicates that the impurities at the wind inlet 110 are basically cleaned, and at this time, a second command is sent to control the cleaning device 200 to stop.
It should be noted that the ranges and specific values of the first preset threshold and the second preset threshold are only one embodiment under a specific environment, and do not represent that in other embodiments, the first preset threshold and the second preset threshold can only be values within the above exemplary ranges, that is, the specific values of the first preset threshold and the second preset threshold can be flexibly adjusted according to different specific environments.
In summary, the embodiment of the present invention provides a projector and a method, an apparatus, and a system for cleaning impurities thereof, in which a first detection element 130 is disposed inside a projector housing 100 to detect a first temperature value inside the projector, a second detection element 140 is disposed outside the projector to detect a second temperature value outside the projector housing 100, and a controller is used to determine whether a relative relationship between an internal temperature and an external temperature meets a first preset condition, if yes, it is determined that air entering the projector is less, and it is further determined that impurities at an air inlet 110 of the housing 100 are too much and the blockage is serious, at this time, the controller sends a first command for controlling a cleaning apparatus 200 to start, so that the cleaning apparatus 200 cleans the impurities at the air inlet 110, and dredges the air inlet 110, and ensures that sufficient air enters the projector, thereby ensuring a heat dissipation effect and performance of the projector, avoiding damage to the projector, and avoiding a safety hazard.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (14)
1. The utility model provides an impurity clearance system of projecting apparatus, the projecting apparatus is including the casing that is equipped with the air intake, its characterized in that, the system includes:
the first detection element is arranged in the shell and used for detecting a first temperature value in the shell;
the second detection element is arranged outside the shell and used for detecting a second temperature value outside the shell;
the cleaning device comprises a support, a dust removing mechanism and a driving mechanism, the support is movably arranged on the shell and is enclosed with the shell to form an accommodating cavity, the support is provided with a dust outlet communicated with the air inlet, the dust removing mechanism is arranged in the accommodating cavity and is used for cleaning impurities at the air inlet corresponding to the dust outlet, and the driving mechanism is used for driving the support to move on the shell so that the area swept by the dust removing mechanism completely covers the area of the air inlet;
the adsorption device is arranged corresponding to the dust outlet and is used for adsorbing and collecting impurities discharged from the dust outlet; the adsorption device comprises a fixed frame, a fan and a dust collector, and the fixed frame is arranged on the support; the fan is arranged at the position of the fixed frame far away from the dust outlet; the dust collector is arranged on the fixed frame, is positioned between the dust outlet and the air suction opening of the fan, and is used for passing through air flow and collecting impurities;
the dust collector comprises a fixing piece, a filtering piece and a flow guide piece, the fixing piece is arranged on the fixing frame, the fixing piece is provided with an air duct, one end of the air duct is communicated with the dust outlet, and the other end of the air duct corresponds to the air suction opening of the fan; the fixing piece is arranged in the air duct; the guide piece is arranged in the air duct and is positioned between the dust outlet and the filtering piece, the guide piece is funnel-shaped, one end with a larger caliber of the guide piece is connected to the inner wall of one end, close to the dust outlet, of the fixing piece, and the other end with a smaller caliber of the guide piece extends towards the filtering piece;
the controller is electrically connected with the first detection element, the second detection element, the dust removal mechanism, the driving mechanism and the fan and is used for acquiring a first temperature value inside the shell and a second temperature value outside the shell;
and sending a first command under the condition that the relative relation between the first temperature value and the second temperature value meets a first preset condition, wherein the first command is used for controlling a cleaning device to start so as to clean impurities at the air inlet.
2. The system of claim 1, wherein the cleaning device is disposed outside the housing.
3. The impurity removal system for a projector according to claim 1, wherein said filter member includes:
the first filter screen is arranged between the dust outlet and the air suction opening of the fan and used for coarse filtration;
the second filter screen is arranged between the first filter screen and the air suction opening of the fan and used for fine filtration.
4. The system for removing foreign substances from a projector according to claim 1, wherein the flow guide member has a passage, one end of the passage communicates with the dust outlet, and the other end of the passage extends in a direction away from the dust outlet and toward the filter member, wherein the passage has a cross-sectional area that decreases in the direction of extension.
5. The system of claim 1, 3 or 4, wherein the holder is detachably provided to the holder.
6. The impurity removing system of a projector as claimed in claim 5, wherein said dust collector is detachably provided to said fixing frame.
7. The impurity removing system of a projector according to claim 1, wherein said dust removing mechanism comprises:
the dust removal piece is rotatably arranged on the support and corresponds to the dust outlet;
the first driving piece is arranged on the support, is electrically connected with the controller and is used for driving the dust removal piece to rotate.
8. The system of claim 1, wherein the holder comprises a first plate, and a second plate, a third plate, a fourth plate, and a fifth plate sequentially connected to an edge of the first plate, wherein the first plate, the third plate, the fourth plate, the fifth plate and the housing enclose the accommodating cavity; the first plate body is provided with the dust outlet.
9. The system of claim 1, wherein the housing is provided with a rotating shaft, the holder is rotatably connected to the rotating shaft, and the driving mechanism is configured to drive the holder to rotate around the rotating shaft.
10. The impurity removing system for a projector according to claim 9, wherein said driving mechanism comprises:
the second driving piece is arranged on the support;
and the transmission part is connected between the output end of the second driving part and the rotating shaft.
11. The system as claimed in claim 1, wherein the controller is further configured to send a second command after the step of sending the first command, if the relative relationship between the first temperature value and the second temperature value satisfies a second predetermined condition, wherein the second command is used to control the cleaning device to stop.
12. The impurity removing system of a projector as set forth in claim 11, wherein the second preset condition includes:
and the difference value of the first temperature value and the second temperature value is less than or equal to a second preset threshold value.
13. The contaminant removal system of any one of claims 11 to 12, wherein the first preset condition comprises:
and the difference value of the first temperature value and the second temperature value is greater than or equal to a first preset threshold value.
14. A projector characterized by comprising the impurity cleaning system of the projector according to any one of claims 1 to 13.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914652A (en) * | 2015-06-15 | 2015-09-16 | 东信科技（深圳）有限公司 | Device and method for detecting blockage of projector dust screen |
| CN205879977U (en) * | 2016-05-13 | 2017-01-11 | 深圳市毅丰光电科技有限公司 | Wind speed detection device of projector and projector |
| CN206503104U (en) * | 2017-02-14 | 2017-09-19 | 郭照明 | Electric road sweeper |
| CN108760812A (en) * | 2018-06-01 | 2018-11-06 | 苏州市东成办公科技有限公司 | A kind of projecting apparatus Air Filter blockage detector |
| CN208922043U (en) * | 2018-10-10 | 2019-05-31 | 南京邮电大学 | A kind of projector dust-extraction unit |
| KR102168499B1 (en) * | 2020-07-16 | 2020-10-21 | 주식회사 엠엔지 이엔티 | Beam projector equipped with blockage detection function of dustproof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011257549A (en) * | 2010-06-08 | 2011-12-22 | Sanyo Electric Co Ltd | Projection type video display device |
| CN107315308A (en) * | 2016-04-27 | 2017-11-03 | 深圳市光峰光电技术有限公司 | Projecting apparatus and its cooling control method |
| CN107898394B (en) * | 2017-11-23 | 2020-04-17 | 马伊兰 | Deformable floor sweeping robot and control method thereof |
| CN108742329B (en) * | 2018-05-25 | 2021-05-18 | 深圳市启为机器人技术有限公司 | Floor sweeping robot |
| CN110353575A (en) * | 2019-07-10 | 2019-10-22 | 武汉市星客智行教育科技有限责任公司 | A kind of sweeping robot and preparation method thereof |
-
2020
- 2020-12-29 CN CN202011587693.0A patent/CN112684655B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914652A (en) * | 2015-06-15 | 2015-09-16 | 东信科技（深圳）有限公司 | Device and method for detecting blockage of projector dust screen |
| CN205879977U (en) * | 2016-05-13 | 2017-01-11 | 深圳市毅丰光电科技有限公司 | Wind speed detection device of projector and projector |
| CN206503104U (en) * | 2017-02-14 | 2017-09-19 | 郭照明 | Electric road sweeper |
| CN108760812A (en) * | 2018-06-01 | 2018-11-06 | 苏州市东成办公科技有限公司 | A kind of projecting apparatus Air Filter blockage detector |
| CN208922043U (en) * | 2018-10-10 | 2019-05-31 | 南京邮电大学 | A kind of projector dust-extraction unit |
| KR102168499B1 (en) * | 2020-07-16 | 2020-10-21 | 주식회사 엠엔지 이엔티 | Beam projector equipped with blockage detection function of dustproof |
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