Sugar mist projector

Abstract

The invention relates to a sugar mist projector, which comprises a shell, and a sugar storage tank used for storing liquid sugar and arranged in the shell; the atomizer is used for atomizing the stored liquid sugar into sugar mist; the blower is used for blowing the sugar mist out of the shell to form a mist curtain; the exhaust fan forms a negative pressure air duct and maintains the fog screen form to form a stable fog screen; meanwhile, the negative pressure air duct absorbs the sugar mist when the sugar mist cannot be kept stable, and the absorbed sugar mist is filtered through a filter element; the projection module is used for projecting a picture onto the fog screen according to the picture data; and the main control module is used for controlling the atomizer, the blower and the exhaust fan to work and converting an input image into picture data to control the projection module to project. The sugar mist projector has the advantages of energy conservation and good display effect.

Description

Technical Field

[0001] The present invention relates to the field of projection, in particular to a sugar mist projector. Background Art

[0002] Existing stereoscopic projectors generally use water mist, glass or screen as carriers. Taking the water mist projector as an example, it uses ultrasound or heating to atomize water into water mist to form a fog screen with a certain thickness, and then projects the image onto the fog screen to achieve projection.

[0003] However, water mist is difficult to control and spreads quickly, resulting in a large, uneven fog screen. This causes fluctuations in the distance of the projected image and a poor viewing experience. Furthermore, the rapid spread of water mist requires continuous mist generation, resulting in high water consumption and the need for frequent replenishment. While using glass or a screen as a carrier offers good uniformity, it is also heavy and difficult to move. Summary of the Invention

[0004] Based on this, the object of the present invention is to provide a sugar mist projector.

[0005] A sugar mist projector comprises: a housing, and arranged within the housing: a sugar storage tank for storing liquid sugar; an atomizer for atomizing the stored liquid sugar into sugar mist; a blower for blowing the sugar mist out of the housing to form a mist curtain; an exhaust fan for forming a negative pressure air duct to maintain the shape of the mist curtain to form a stable mist curtain; at the same time, the negative pressure air duct absorbs the sugar mist when the sugar mist cannot maintain stability and filters the absorbed sugar mist through a filter element; a projection module for projecting an image onto the mist curtain according to image data; and a main control module for controlling the operation of the atomizer, the blower and the exhaust fan, and converting an input image into image data to control the projection module to perform projection.

[0006] Compared with the existing technology, the sugar mist projector described in the present invention can form a more durable and stable fog screen by adopting a sugar mist fog curtain, and the projected image has less fluctuation and the display effect is better; and there is no need to add glass and other objects, and the overall structure is light and easy to move; at the same time, the exhaust fan in the present invention absorbs the sugar mist, which can effectively prevent the sugar from floating in the environment and causing pollution.

[0007] Furthermore, the atomizer, the blower and the exhaust fan work intermittently in a certain period. By working periodically, the suspension performance of the sugar particles can be utilized to the maximum extent and the consumption of sugar can be reduced.

[0008] Furthermore, the intermittent duration of the intermittent work is 0.5s to 5s.

[0009] Furthermore, it also includes a condenser, which is connected to the exhaust fan and the sugar storage tank, and condenses and polysaccharides the sugar mist absorbed by the exhaust fan through cooling, and re-transports the obtained sugar into the sugar storage tank.

[0010] Furthermore, the invention further comprises a plurality of nozzles in a fan or cone shape; the narrow end of the nozzle is connected to the blower, and the sugar mist is blown out from the wide end thereof to form the mist curtain. By providing a plurality of nozzles, the sugar mist is evenly dispersed, so that the mist curtain is formed uniformly.

[0011] Furthermore, the nozzles are arranged symmetrically in a straight line, and the axes of the two symmetrical nozzles intersect in a shallow focus area in the vertical direction. By adjusting the nozzle direction, the mist layer is formed only in the target area to avoid large-area diffusion.

[0012] Furthermore, the opening angle of the nozzle is 90 degrees to 120 degrees.

[0013] Furthermore, the exhaust port of the exhaust fan is U-shaped and is respectively arranged at both ends and the back of the mist curtain. By recovering the sugar particles at both ends and the back of the mist curtain, the sugar particles are prevented from floating in front of the mist curtain and affecting the image perception.

[0014] Furthermore, the negative pressure air duct formed by the exhaust fan is inclined toward the fog curtain, so that the distance between the negative pressure air duct and the bottom of the fog curtain is greater than the distance between the negative pressure air duct and the top of the fog curtain.

[0015] Furthermore, the angle between the negative pressure air duct and the edge of the fog curtain is less than 30 degrees.

[0016] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the sugar mist projector;

[0018] Figure 2 is a schematic diagram of the internal structure of the projector;

[0019] Figure 3 Schematic diagram of negative pressure air ducts on both sides of the fog curtain;

[0020] Figure 4 Schematic diagram of the negative pressure air duct on the back of the fog curtain. DETAILED DESCRIPTION

[0021] Technical analysis revealed that the primary issue with fog uniformity in current water mist projectors is that the water mist diffuses quickly, preventing it from forming a stable fog screen. Therefore, the present invention replaces water mist with sugar mist, which offers improved suspending properties. Sugar particles can be easily atomized into sufficiently small particles, allowing them to remain suspended for extended periods. Furthermore, compared to water mist, the sugar particles that make up sugar mist are heavier and more viscous, creating a long-lasting fog screen that is less prone to dispersal and more stable.

[0022] Furthermore, when using a sugar mist screen, technicians discovered that after a period of time, the sugar particles in the mist drifted around, causing a slight viscous load on the air that could affect the respiratory system. This could also cause sugar to adhere to surfaces, forming a thin film that made hands sticky, and trigger crystallization inside projectors. Therefore, the present invention also incorporates a design that uses an exhaust fan to create a negative pressure duct. Sugar particles that are about to lose their stable suspension and begin to drift are recovered through the negative pressure duct and then filtered and absorbed by a filter element.

[0023] Furthermore, based on the fact that sugar particles maintain a long stable suspension time, the technicians have made improvements. The mist control module of the present invention operates intermittently at regular intervals. After forming a stable sugar mist curtain, the mist control module stops generating sugar mist. After a period of time, when the sugar mist curtain is about to lose stability, the mist control module resumes operation, gradually absorbing the original sugar mist and forming a new mist curtain, thus reducing sugar consumption.

[0024] The following describes the invention through various embodiments.

[0025] Example 1

[0026] See also Figure 1-2 , Figure 1 is a schematic diagram of the overall structure of the sugar mist projector, Figure 2 The figure is a schematic diagram of the internal structure of the projector. The sugar mist projector of the present invention includes a housing and a fog screen control module, a projection module, and a main control module disposed within the housing. The fog screen control module atomizes liquid sugar to form a fog screen, and the projection module projects an image onto the fog screen.

[0027] The shell is a hollow cuboid, with a power supply, a video input port, an air outlet and a switch button provided on the back, and a detachable cover provided on the front.

[0028] The mist curtain control module includes a sugar storage tank 11, a sugar mist generating unit and a sugar mist recovery unit.

[0029] The sugar tank 11 is a cylindrical tank with an open top, and a tank cover is provided at the opening. Liquid sugar is stored in the sugar tank 11. In this embodiment, to prevent the color, purity, and residual impurities of different sugar types from affecting image brightness and color reproduction, colorless and highly transparent white sugar or glucose is used.

[0030] The sugar mist generating unit includes an ultrasonic atomizer 21 , a blower 22 and a nozzle 23 .

[0031] The input end of the ultrasonic atomizer 21 is connected to the sugar storage tank 11 via a constant-flow pump, and the output end is connected to the blower 22. The ultrasonic atomizer 21 draws liquid sugar from the sugar storage tank 11 at a constant flow rate through the constant-flow pump. Ultrasonic waves are generated by the piezoelectric crystal, causing it to produce high-frequency mechanical vibrations. These high-frequency mechanical vibrations form tension waves on the surface of the liquid sugar, breaking the input liquid sugar into tiny sugar particles with a diameter between 2 and 10 μm. These tiny sugar particles are suspended in the air to form a sugar mist, which then enters the blower 22. In this embodiment, the ultrasonic atomizer 21 uses an ultrasonic frequency of 1.7 MHz to 2.4 MHz. Furthermore, to prevent blockage during the process of liquid sugar entering the ultrasonic atomizer 21 from the sugar storage tank 11, the mass fraction of the liquid sugar is controlled at 8% to 12%, and the flow rate of the constant-flow pump is controlled at 1-2 ml / min.

[0032] The hair dryer 22 is provided with an air inlet and an air outlet. The air inlet of the hair dryer 22 is connected to the output end of the ultrasonic atomizer 21, and the air outlet is connected to the nozzle 23. The hair dryer 22 accelerates the sugar mist entering the air inlet and blows it out through the nozzle 23.

[0033] The nozzle 23 is fan-shaped with an opening angle of 90 degrees to 120 degrees. There are multiple nozzles 23, which are symmetrically arranged in a straight line along the length direction of the shell. The wide end of the nozzle 23 is located on the shell, and the narrow end is connected to the air outlet end of the hair dryer 22. Moreover, the symmetry lines of the two mutually symmetrical left and right nozzles 23 intersect in the vertical Z-axis shallow focus area, so that a fog layer is formed only in the target area to avoid large-scale diffusion. The sugar mist blown out by the hair dryer 22 is ejected vertically from the wide end of each nozzle 23, forming a fog curtain composed of sugar mist in the air. In this embodiment, the amount of sugar mist output by each nozzle is within 5-8 ml / min.

[0034] The sugar mist recovery unit includes an exhaust fan 31, a condenser 32 and a filter element.

[0035] The exhaust port of the exhaust fan 31 is U-shaped and arranged at the top of the housing, with the open end of the U-shaped portion facing the front of the housing and surrounding the nozzle 23. Figure 3-Figure 4 , Figure 3 is a schematic diagram of the negative pressure air ducts on both sides of the fog curtain, Figure 4 The figure shows the negative pressure duct on the back of the mist curtain. The negative pressure duct 312 of the exhaust fan 31 is tilted toward the mist curtain 311, so that the duct is farther from the bottom edge of the mist curtain than the top. This balances the absorption of sugar mist by the bottom and top ducts, ensuring that all parts of the mist curtain are absorbed at the same rate. In this embodiment, the angle A between the negative pressure duct 312 and the mist curtain 311 is less than 30 degrees, the maximum distance between the negative pressure duct 312 and the mist curtain 311 is less than 30 cm, and the negative pressure flow rate is 0.5-1 m / s.

[0036] The condenser 32 has an air inlet, an air outlet, and a liquid outlet. The air inlet is connected to the air outlet of the exhaust fan 31, the air outlet is connected to the filter element, and the liquid outlet is connected to the sugar storage tank 11. The condenser 32 maintains a low-temperature constant temperature. After the sugar mist extracted by the exhaust fan 31 is condensed and sugar-aggregated, the high-concentration sugar particles within it are cooled and aggregated into large sugar particles. These particles are then collected as a high-viscosity sugar liquid and transported from the liquid outlet to the sugar storage tank 11. In this embodiment, the internal temperature of the condenser 32 is controlled at 10-20°C.

[0037] The filter element is a food-grade sugar-absorbing membrane or a HEPA-grade wet filter element. The gas treated by the condenser 32 is filtered through the filter element, which adsorbs the residual tiny sugar particles in the treated gas. After filtration, the gas is discharged into the air through the air outlet of the shell.

[0038] The projection module is provided with an image input terminal and a projection port. The image input terminal is connected to the main control module to obtain image data. The projection port is provided on the top surface of the housing. The projection module generates an image based on the image data and projects the image onto the fog screen through the projection port at an angle of 45 degrees from the vertical direction.

[0039] The main control module is equipped with a power input terminal, an image input terminal, a power output terminal, and a picture output terminal. The power input terminal is connected to the power interface via the switch button to obtain the operating voltage. The image input terminal is connected to the video input interface to obtain the input image. The power output terminal is connected to the constant current pump, blower, exhaust fan, condensation filter cabin, and power supply terminal of the projection unit of the fog curtain control module. The picture output terminal is connected to the picture input terminal of the projection unit.

[0040] When in use, the sugar mist projection device is placed on a table and connected to a power supply and a video input terminal, and the cover on the front of the projector is opened to inject liquid sugar into the sugar storage tank 11. Then, the switch button is pressed, and the main control module receives the on signal of the switch button and supplies power to the fog screen control module and the projection module to start working. The ultrasonic atomizer 21 atomizes the liquid sugar in the sugar storage tank 11 into a sugar mist, which is blown out by the blower 22 and then sprayed vertically into the air through the nozzle 23 at a speed of 5-8 ml / min; at the same time, the exhaust fan 31 forms a negative pressure air duct. Since the negative pressure air duct and the fog curtain form a certain angle, the suction at different heights is similar, so that the sugar mist is guided by the suction of the negative pressure air duct during the rising process, preventing the sugar mist from drifting in a direction outside the preset fog curtain shape position, thereby guiding the sugar mist to form a preset stable fog curtain shape; 5-8 seconds after starting up, the fog curtain control module forms a stable fog curtain with a thickness of 3-8 cm; since the sugar mist has a certain viscosity, the formed fog layer has stability and can be suspended for a longer time. At this time, the main control module controls the fog curtain control module to stop working. At the same time, the main control module processes the received input image to obtain image data and outputs it to the projection module, controls the projection module to generate an image according to the image data and project it onto the fog curtain.

[0041] After the sugar particles in the mist curtain have been suspended in the air for 0.5-5 seconds, the main control module controls the exhaust fan 31 of the sugar mist recovery unit to form a negative pressure air duct again, drawing the sugar mist in the air to the two ends and back of the mist curtain, out of the mist curtain range, and preventing the mist particles from falling vertically into the nozzle 23; at the same time, the sugar mist generation unit is activated to generate sugar mist again and spray it through the nozzle 23 to fill the sugar particles that have been drawn out of the mist curtain range; the projection module continues to project. At this time, due to the relatively large thickness of the mist curtain, between 3-8 cm, the sugar particles are recovered through the negative pressure air duct and new sugar mist is generated by the sugar mist generation unit. The impact of the fog curtain fluctuation on the picture is relatively small, thereby recovering the sugar mist and sugar particles that gradually lose their suspension ability to avoid environmental pollution, and also providing a stable picture effect.

[0042] After the exhaust fan 31 of the sugar mist recovery unit recovers the sugar particles, it is recovered through the condenser 32 to form liquid sugar and enter the sugar storage tank 11 to generate a new round of mist curtain; at the same time, the remaining gas passes through the filter element to adsorb tiny sugar particles and is discharged into the environment to prevent sugar particles from entering the environment.

[0043] Furthermore, each part of the mist curtain control module is installed with a snap-fit ​​structure, which is easy to disassemble and clean. At the same time, an anti-stick coating is sprayed on the surface of the shell to prevent sugar particles from adhering to the shell and crystallizing, thereby affecting use.

[0044] Furthermore, because the sugar mist forms the fog curtain with high density and strong scattering, the main control module first processes the input image when acquiring it. The main control module improves the sharpness, dynamic brightness, and dark brightness of the input image; then, the adjusted input image is converted into image data and transmitted to the projection module to generate the image.

[0045] Furthermore, an image detection camera is provided to detect the image displayed on the fog screen and transmit the data to the main control module. Since the fog screen formed by the sugar mist is relatively stable, the main control module uses a beam offset correction algorithm to adjust the image based on the refraction and distortion of the image on the fog screen captured by the image edge tracking module, and adjusts the output angle and focus of the projection module.

[0046] In another embodiment, the sugar mist projector is further provided with a gesture recognition module, and the housing is further provided with a signal output terminal. The gesture recognition module is a TOF sensor, which is arranged on the top surface of the housing to detect the front of the fog screen and transmit the data to the main control module. When the user touches the fog screen, the TOF sensor collects the signal reflected from the user's touch position, obtains the touch distance based on the reception time and outputs it to the main control module. The main control module confirms the touch position based on the distance information to obtain the touch information and outputs it to an external computer through the signal output terminal, so that the user can touch through the fog screen. Since the sugar mist contains less water, has a long suspension time and a stable thickness, the reflection caused by the fog screen is smaller than that of the water mist fog screen, and has a lower false touch rate and lower response delay.

[0047] Furthermore, the sugar mist projector is also provided with a fragrance storage tank, which is connected to the sugar mist generating unit via a micro pump, and the micro pump is controlled by the main control module. Food-grade fragrance liquid is placed in the fragrance storage tank. When the main control module receives an aroma release instruction from an external computer, it controls the micro pump to atomize the fragrance liquid in the fragrance storage tank into fragrance and send it into the ultrasonic atomizer. The fragrance and part of the sugar mist together form a fog curtain, so that it is retained only in part of the fog curtain. Sugar mist has a slight wrapping effect, which can prolong the perception time of the fragrance aroma; and the sugar mist has the characteristics of dense sugar particles, stable floating, and strong adhesion, so the fragrance of the fragrance can stay for a longer time, and can better interact with the user through fragrance.

[0048] Or the fragrance storage tank is connected to the upper surface of the housing through a micro pump. When the main control module receives a fragrance release instruction from an external computer, it controls the micro pump to atomize the fragrance liquid in the fragrance storage tank into fragrance, and then releases it directly from the upper surface of the housing into the environment without mixing with the sugar mist.

[0049] Furthermore, a variety of different fragrances can be set to release different aromas as needed.

[0050] In another embodiment, solid sugar is placed in the sugar storage tank 11 .

[0051] Example 2

[0052] The structure of the sugar mist projector of Example 2 is substantially the same as that of Example 1, with the only difference being that the ultrasonic atomizer is replaced with an electric atomizer, which obtains liquid sugar from the sugar storage tank 11 and atomizes the sugar particles to form a mist curtain via the blower 22. The electric atomizer heats the liquid sugar to a temperature slightly above its melting point, atomizing it into sugar particles and performing constant temperature control to prevent caramelization or carbonization.

[0053] Example 3

[0054] The structure of the sugar mist projector of Example 3 is substantially the same as that of Example 1, with the only difference being that the ultrasonic atomizer is replaced by a laser atomizer, which obtains liquid sugar from the sugar storage tank 11 and atomizes the sugar particles to form a mist curtain via the blower 22. The laser atomizer focuses a laser beam on the liquid sugar, causing it to instantly vaporize at high temperature to form sugar mist.

[0055] Using laser focusing for atomization can also adjust the atomization rate of liquid sugar at different positions, thereby adjusting the sugar mist concentration in different areas of the fog curtain, and then controlling the geometric shape of the fog curtain.

[0056] Compared with the existing technology, the sugar mist projector described in the present invention can form a more durable and stable fog screen by adopting a sugar mist fog curtain, and the projected image has less fluctuation and the display effect is better; and there is no need to add glass or other objects, and the overall structure is light and easy to move; at the same time, the exhaust fan in the present invention absorbs the sugar mist, which can effectively prevent the sugar from floating in the environment and causing pollution.

[0057] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that, unless otherwise specified, "multiple" refers to two or more; the terms "first", "second", "third", etc. are only used to distinguish, and are not used to describe a specific order or sequence, nor can they be understood to indicate or imply relative importance. The term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of the present application, for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0058] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous modifications and improvements without departing from the spirit of the present invention, and the present invention is intended to encompass such modifications and variations.

Claims

1. A sugar mist projector, characterized in that: The invention comprises: a housing, and disposed in the housing: Sugar storage tanks, used to store liquid sugar; an atomizer, used for atomizing the stored liquid sugar into sugar mist; a blower, for blowing the sugar mist out of the housing to form a mist curtain; an exhaust fan, which forms a negative pressure air duct to maintain the shape of the mist curtain to form a stable mist curtain; at the same time, the negative pressure air duct absorbs the sugar mist when the sugar mist cannot maintain stability, and filters the absorbed sugar mist through the filter element; a projection module, which projects an image onto the fog screen according to the image data; The main control module controls the operation of the atomizer, the blower and the exhaust fan, and converts the input image into picture data to control the projection module to perform projection.

2. The sugar mist projector according to claim 1, characterized in that The atomizer, the blower and the exhaust fan work intermittently in a certain cycle.

3. The sugar mist projector according to claim 2, characterized in that The intermittent working period is 0.5s to 5s.

4. The sugar mist projector according to claim 1, characterized in that It also includes a condenser, which is connected to the exhaust fan and the sugar storage tank, and condenses and polysaccharides the sugar mist absorbed by the exhaust fan through cooling, and re-transports the obtained sugar into the sugar storage tank.

5. The sugar mist projector according to claim 1, characterized in that The invention also comprises a plurality of nozzles, which are fan-shaped or cone-shaped; the narrow ends of the nozzles are connected to the blowers, so that the sugar mist is blown out from the wide ends thereof to form the mist curtain.

6. The sugar mist projector according to claim 5, characterized in that The nozzles are arranged symmetrically in a straight line, and the axes of the two symmetrical nozzles intersect in a shallow focus area in the vertical direction.

7. The sugar mist projector according to claim 6, characterized in that The opening angle of the nozzle is 90 degrees to 120 degrees.

8. The sugar mist projector according to claim 1, characterized in that The exhaust port of the exhaust fan is U-shaped and is respectively arranged at the two ends and the back of the fog curtain.

9. The sugar mist projector according to claim 8, characterized in that The negative pressure air duct formed by the exhaust fan is inclined toward the fog curtain, so that the distance between the negative pressure air duct and the bottom of the fog curtain is greater than the top of the fog curtain.

10. The sugar mist projector according to claim 9, characterized in that: The angle between the negative pressure air duct and the edge of the fog curtain is less than 30 degrees.

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