Inkjet printer with dustproof ventilation structure

Abstract

The utility model relates to a kind of inkjet printer with dustproof ventilation structure, including printer platform and the machine cover being installed on printer platform, the top of machine cover is provided with ventilation component;The top of machine cover is provided with multiple ventilation holes, multiple ventilation holes rectangular array arrangement forms ventilation area, ventilation component is installed on ventilation area;Ventilation component includes centrifugal fan, static pressure tank and high efficiency filter, the top of static pressure tank is provided with air inlet, centrifugal fan is installed in air inlet, high efficiency filter is installed at the bottom of static pressure tank.The utility model carries out purification to the air entering the machine cover by high efficiency filter, from source, the possibility of dust entering printing area is eliminated, after the air of static pressure tank pressure equalization, it flows down the high efficiency filter installed at the bottom of static pressure tank, i.e. HEPA or similar level, remove the pollutant, such as dust, particulate matter possibly existing in air, ensure that the air flow blowing to printing material is clean, impurity-free, prevent the surface of printing medium from being polluted.

Description

Technical Field

[0001] This utility model relates to the field of printer equipment technology, specifically to an inkjet printer with a dustproof and ventilated structure. Background Technology

[0002] In modern inkjet printing technology, the printing process relies on high-precision droplet control to accurately eject tiny ink droplets onto the surface of the printing medium (such as paper, film, fabric, etc.) to form clear and complete images or text. To ensure print quality, the printing environment usually needs to maintain a certain level of cleanliness to avoid external contaminants interfering with the ink droplet adhesion and drying process.

[0003] However, in actual industrial or office applications, printing equipment is often in a non-completely enclosed environment, especially in workshops and warehouses where the concentration of airborne dust particles is high. Some printing devices are equipped with cooling or blowing devices (such as fans) near the printing area to accelerate ink drying or prevent the printing media from becoming damp and deformed. While these devices help improve production efficiency, their operation may disturb the surrounding airflow, blowing dust particles from the workshop onto the surface of the printing media.

[0004] When dust particles adhere to the surface of the printing medium, they form a localized physical barrier, hindering direct contact between ink droplets and the substrate. Subsequently, ink droplets sprayed onto the dust-covered area cannot effectively penetrate or adhere to the medium surface, remaining only on the loose dust particles. As the ink gradually evaporates and dries, the dust particles, lacking adhesion, easily detach from the medium surface, along with the attached ink layer, resulting in scattered blank spots or missing areas in the final printed image. This defect not only affects the visual integrity and aesthetics of the printed image but can also lead to functional problems such as barcode recognition failure and loss of text and image information, severely reducing product yield and customer satisfaction. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an inkjet printer with a dustproof and ventilated structure, thereby solving the problem that the blower devices equipped on traditional printing equipment easily blow dust particles from the workshop onto the surface of the printing media, affecting the visual integrity and aesthetics of the printed images.

[0006] To solve the above-mentioned technical problems, this utility model achieves the following solution:

[0007] This utility model discloses an inkjet printer with a dustproof and ventilated structure, including a printer platform and a cover mounted on the printer platform, wherein a ventilation component is provided on the top of the cover.

[0008] The top of the hood has multiple ventilation holes, which are arranged in a rectangular array to form a ventilation area, and the ventilation components are installed on the ventilation area;

[0009] The ventilation assembly includes a centrifugal fan, a plenum chamber, and a high-efficiency filter. The top of the plenum chamber has an air inlet, the centrifugal fan is installed inside the air inlet, and the high-efficiency filter is installed at the bottom of the plenum chamber.

[0010] Preferably, the static pressure box is provided with a support plate and two auxiliary plates inside, the centrifugal fan is installed in the center of the support plate, and the two auxiliary plates are located on both sides of the support plate;

[0011] The two sides of the support plate extend above the sub-plate.

[0012] Preferably, the machine cover is a box structure formed by a top plate, a front side plate, a rear side plate, a first end side plate, and a second end side plate.

[0013] The first end side plate is located at the discharge end of the printer platform, and an opening is provided on the first end side plate for exporting the completed printed material.

[0014] Preferably, a baffle is slidably installed on the outer side of the opening to block the opening, and a screw is threadedly connected to the top of the baffle;

[0015] The printer platform has abutment blocks on both sides, located directly below the baffle.

[0016] A fixing member is also provided on the outside of the opening, and the fixing member is located above the baffle.

[0017] The fastener has a hole or slot for mounting the end of the screw.

[0018] When the baffle is fixedly connected to the fixing member, the opening is in an open state;

[0019] When the baffle is released from the fixing connection with the fixing member, the baffle slides down under the action of gravity and abuts against the upper surface of the abutting block, and the opening is in a closed state.

[0020] Preferably, a slide rail is provided on both sides of the opening, and a retaining plate is provided on each side of the baffle near the slide rail, and the retaining plate is slidably connected to the slide rail.

[0021] Preferably, an arc-shaped curved edge is provided on each side of the slide rail, and two cylindrical locking rods and a reinforcing plate are provided on the side of the locking plate facing the slide rail, with the two locking rods fixedly connected to the two sides of the reinforcing plate respectively.

[0022] The two locking rods are respectively locked to the two curved edges.

[0023] Preferably, the top of the machine cover is provided with four upright plates, and the four upright plates are respectively located at the four corners of the ventilation area. The static pressure box is connected to the four upright plates by bolts.

[0024] Preferably, a window is provided on the front side panel, and a flip cover is rotatably connected inside the window. The top of the flip cover is connected to the top of the window by a hinge.

[0025] Preferably, a horizontal plate is also provided on the first end side plate, the horizontal plate being located on the top outer side of the opening, and the width of the horizontal plate being equal to the minimum distance between the front side plate and the baffle.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] The centrifugal fan is installed at the air inlet on the top of the plenum chamber, drawing in air from the outside upon startup. Due to its high pressure and stable airflow, the centrifugal fan provides continuous and controllable airflow power for the entire ventilation system. After entering the plenum chamber, the airflow is buffered and pressure-equalized through its internal cavity structure. The plenum chamber's function is to transform the concentrated, turbulent airflow generated by the centrifugal fan into a low-speed, uniformly distributed laminar flow, preventing excessively strong local winds or turbulent airflow. The ventilation zone consists of multiple ventilation holes arranged in a rectangular array, effectively dividing the air outlet surface at the bottom of the plenum chamber into several tiny outlet units. This structure disperses and redistributes any potentially high-speed local airflow, allowing the airflow to vertically and downwards across the entire printing area in a multi-point, synchronous, and equidistant manner, thus creating a near-uniform surface source airflow effect. After being pressurized by the static pressure chamber, the air flows downwards through a high-efficiency particulate filter (HEPA or similar) installed at the bottom of the chamber. This removes any dust, particulate matter, and other contaminants that may be present in the air, ensuring that the airflow blowing towards the printing materials is clean and free of impurities, preventing contamination of the printing media's surface. Traditional fans directly blow air through the workshop, which can carry dust to the surface of the printing media. This solution, however, uses a high-efficiency filter to purify the air entering the machine enclosure, eliminating the possibility of dust entering the printing area at its source. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0029] Figure 2 This is a first-view structural diagram of the casing of an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0030] Figure 3This is a schematic diagram of the vertical cross-section of the ventilation component in an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0031] Figure 4 This is a schematic diagram of the printer platform in an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0032] Figure 5 This is a second-view structural diagram of the casing of an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0033] Figure 6 This is a schematic diagram of the first end side plate of an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0034] Figure 7 This is a schematic diagram of the fixing component in an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0035] Figure 8 This is a schematic diagram of the baffle in an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0036] Figure 9 This is a schematic diagram of the card plate and slide rail in an inkjet printer with a dustproof and ventilated structure according to the present invention.

[0037] The following labels are used in the attached diagram: 1. Printer platform; 2. Machine cover; 11. Abutment block; 21. Ventilation hole; 22. Front side panel; 23. Rear side panel; 24. First end side panel; 25. Second end side panel; 26. Baffle; 27. Fixing component; 28. Vertical plate; 31. Centrifugal fan; 32. Static pressure box; 33. High-efficiency filter; 200. Ventilation zone; 221. Window; 222. Flip cover; 241. Opening; 242. Horizontal plate; 261. Screw; 262. Clamping plate; 271. Groove; 321. Air inlet; 322. Support plate; 323. Sub-plate; 2411. Slide rail; 24111. Curved edge; 2621. Clamping rod; 2622. Reinforcing plate. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0039] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1: The specific structure of this utility model is as follows:

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, an inkjet printer with a dustproof and ventilated structure includes a printer platform 1 and a casing 2 mounted on the printer platform 1. A ventilation component is provided on the top of the casing 2. The top of the casing 2 has multiple ventilation holes 21, which are arranged in a rectangular array to form a ventilation zone 200. The ventilation component is mounted on the ventilation zone 200. The ventilation component includes a centrifugal fan 31, a static pressure box 32, and a high-efficiency filter 33. An air inlet 321 is provided on the top of the static pressure box 32. The centrifugal fan 31 is installed inside the air inlet 321, and the high-efficiency filter 33 is installed at the bottom of the static pressure box 32.

[0042] In this embodiment, the centrifugal fan 31 is installed at the air inlet 321 on the top of the plenum chamber 32, and draws in air from the outside after startup. Because the centrifugal fan 31 has the characteristics of high air pressure and stable airflow, it can provide continuous and controllable airflow power for the entire ventilation system. After the drawn-in air enters the plenum chamber 32, its internal cavity structure achieves airflow buffering and pressure equalization. The function of the plenum chamber 32 is to transform the concentrated, turbulent airflow generated by the centrifugal fan 31 into a low-speed, uniformly distributed laminar flow, avoiding excessively strong local wind or turbulent airflow. The air, after being pressure equalized by the plenum chamber 32, flows downwards through the high-efficiency filter 33 (HEPA or similar level) installed at the bottom of the plenum chamber 32, removing any dust, particulate matter, and other contaminants that may be present in the air, ensuring that the airflow blowing towards the printing material is clean and free of impurities, preventing contamination of the printing media surface. Traditional fans directly blow workshop air, which can bring dust to the surface of the printing media. This solution, however, uses the high-efficiency filter 33 to purify the air entering the machine enclosure, eliminating the possibility of dust entering the printing area at the source. Filtered clean air is blown vertically downwards in a uniform and gentle manner through multiple ventilation holes 21 arranged in a rectangular array on the top of the casing 2 onto the surface of the freshly inkjet-printed material. This ventilation zone 200 covers the entire printing area, ensuring a consistent drying effect throughout the printing area. Under continuous airflow, the ink solvent on the surface of the printed material evaporates more quickly, and moisture is carried away by the airflow and discharged through exhaust channels on the side walls or bottom of the casing 2, maintaining a dry and stable microenvironment in the printing area.

[0043] While the static pressure chamber 32 can initially equalize the pressure, it is still difficult to guarantee consistent airflow across the entire printing area if air is supplied directly through a single or limited number of outlets. The ventilation zone 200, composed of multiple ventilation holes 21 arranged in a rectangular array, effectively divides the air outlet surface at the bottom of the static pressure chamber 32 into several tiny outlet units. This structure disperses and redistributes any potentially high-speed local airflow, allowing the airflow to vertically and downwards across the entire printing area in a multi-point, synchronous, and equidistant manner, thus creating a near-uniform surface-source airflow effect.

[0044] Furthermore, the static pressure box 32 is provided with a support plate 322 and two auxiliary plates 323 inside. The centrifugal fan 31 is installed in the center of the support plate 322, and the two auxiliary plates 323 are located on both sides of the support plate 322. The two sides of the support plate 322 extend to the top of the auxiliary plates 323.

[0045] In this embodiment, the support plate 322 is located at the center of the static pressure chamber 32, used to securely install the centrifugal fan 31, ensuring that it does not vibrate or shift during operation and improving the overall reliability of the machine. The support plate 322 acts as the main baffle, blocking the direct airflow path of the centrifugal fan 31. Its extended portions on both sides cooperate with the auxiliary plate 323 to naturally guide the airflow discharged from the centrifugal fan 31 to the left and right side chambers, forming symmetrical flow channels and preventing airflow concentration in a single direction. After the airflow is separated by the support plate 322 and the auxiliary plate 323, multiple relatively independent but interconnected sub-chambers are formed within the static pressure chamber 32. This structure extends the residence path of the airflow within the static pressure chamber 32, increases the turbulent mixing time, and allows the high-speed jet to rapidly decay and transform into a low-speed, high-pressure uniform static pressure field. Ultimately, the pressure distribution at the bottom of the entire static pressure chamber 32, above the high-efficiency filter 33, tends to be uniform.

[0046] like Figure 2 and Figure 5 As shown, the machine cover 2 is further defined as a box structure consisting of a top plate 21, a front side plate 22, a rear side plate 23, a first end side plate 24, and a second end side plate 25. The first end side plate 24 is located at the discharge end of the printer platform 1, and an opening 241 is provided on the first end side plate 24 for exporting the completed printed material.

[0047] In this embodiment, the housing 2 forms a box structure that surrounds the printing area above and around it, with necessary ventilation openings or channels only on the second end side plate 25, the first end side plate 24, and the bottom of the housing 2. This semi-enclosed cavity effectively limits the leakage of clean airflow generated by the ventilation components, so that the airflow is mainly concentrated on the surface of the printing material.

[0048] like Figure 4As shown, further, a baffle 26 is slidably installed on the outer side of the opening 241 to cover the opening 241, and a screw 261 is threadedly connected to the top of the baffle 26; abutment blocks 11 are provided on both sides of the printer platform 1 and are located directly below the baffle 26; a fixing member 27 is also provided on the outer side of the opening 241, and the fixing member 27 is located above the baffle 26; as shown Figure 7 As shown, the fixing member 27 has a hole and groove 271 for installing the end of the screw 261; when the baffle 26 is fixedly connected to the fixing member 27, the opening 241 is in an open state; when the baffle 26 is released from the fixing member 27, the baffle 26 slides down under the action of gravity and abuts against the upper surface of the abutting block 11, and the opening 241 is in a closed state.

[0049] In this embodiment, the baffle 26 automatically slides down under gravity and abuts against the abutment block 11, reducing the area of ​​the opening 241. This effectively isolates external contaminants and maintains a high-cleanliness environment inside the machine housing, protected by the HEPA filter 33. Furthermore, due to the reduced exhaust area, a slight positive pressure is created inside the machine housing 2, causing the airflow to exit through the opening 241 at a faster speed, thus accelerating the drying of the ink on the printed material. When the temperature inside the machine housing 2 becomes too high, or after printing is complete, the baffle 26 can be pulled up to increase the area of ​​the opening 241, achieving rapid heat dissipation.

[0050] like Figure 8 As shown, further, a slide rail 2411 is provided on both sides of the opening 241, and a retaining plate 262 is provided on both sides of the side of the baffle 26 near the slide rail 2411, and the retaining plate 262 is slidably connected to the slide rail 2411.

[0051] In this embodiment, the guiding structure of the slide rail 2411 and the clamping plate 262 allows the baffle 26 to slide smoothly in the vertical direction without deviation or jamming during opening or closing. When the device is in printing mode, the baffle 26 slides smoothly down the slide rail 2411 under the action of gravity until it abuts the abutment block 11. Due to the precise fit between the clamping plate 262 and the slide rail 2411, the baffle 26 can completely cover the opening 241, forming a physical sealing barrier. This effectively prevents suspended dust, fibers, moisture and volatile pollutants in the workshop environment from entering the machine cover 2, protecting the surface of the printed material from contamination, and protecting precision components such as the inkjet head and guide roller from dust accumulation. It also extends the service life of the high-efficiency filter 33.

[0052] like Figure 9As shown, further, an arc-shaped curved edge 24111 is provided on each side of the slide rail 2411, and two cylindrical locking rods 2621 and a reinforcing plate 2622 are provided on the side of the locking plate 262 facing the slide rail 2411. The two locking rods 2621 are fixedly connected to the two sides of the reinforcing plate 2622 respectively; the two locking rods 2621 are respectively locked to the two arc-shaped curved edges 24111.

[0053] In this embodiment, each slide rail 2411 has an inwardly curved arc-shaped edge 24111 on its edge, forming a limiting groove similar to a "C" or "U" shape; two cylindrical locking rods 2621 are fixed on the side of the locking plate 262 facing the slide rail, respectively located on the left and right sides of the reinforcing plate 2622; during installation, the two locking rods 2621 are inserted from the opening side of the slide rail 2411 and locked into the inner grooves of the arc-shaped edges 24111 on both sides, forming a "rod-groove" interlocking structure; the reinforcing plate 2622 serves as a rigid support, firmly connecting the two locking rods 2621 into one piece to prevent deformation under force.

[0054] Furthermore, the top of the machine cover 2 is provided with four upright plates, and the four upright plates are respectively located at the four corners of the ventilation area 200. The static pressure box 32 is connected to the four upright plates by bolts.

[0055] In this embodiment, the four upright plates 28 are located at the four corners of the ventilation zone 200, forming a rigid mounting frame that matches the contour of the ventilation zone 200. The bottom or side wall of the static pressure box 32 is fastened to the four upright plates 28 by bolts, realizing a four-point force-bearing and evenly distributed installation method. Furthermore, the four upright plates 28 have a quick positioning function, which can provide a relatively accurate area and positioning point when installing the ventilation components, so that the ventilation components can be quickly and accurately positioned in the ventilation zone 200.

[0056] Furthermore, a window 221 is provided on the front side panel 22, and a flip cover 222 is rotatably connected inside the window 221. The top of the flip cover 222 is connected to the top of the window 221 by a hinge.

[0057] In this embodiment, the flip cover 222 is connected by a top hinge, allowing the user to lift the flip cover 222 to observe the printing process, such as the printhead status, ink droplet placement, and whether the paper feed is flat; manually adjust the position of the printing media, such as correcting slight offsets and removing paper jams; clean the printhead or guide rollers; and temporarily sample to test the drying effect.

[0058] like Figure 6 As shown, a horizontal plate 242 is further provided on the first end side plate 24. The horizontal plate 242 is located on the top outer side of the opening 241, and the width of the horizontal plate 242 is equal to the minimum distance between the front side plate 22 and the baffle 26.

[0059] In this embodiment, when the baffle 26 is closed, there may be a horizontal gap between its top and the upper edge of the opening 241. Without the horizontal plate 242, external air, dust, moisture, etc. may enter the machine hood laterally through this gap, disrupting the airflow field inside the machine hood 2, which is more obvious when there is negative pressure or strong ventilation in the workshop. The horizontal plate 242 covers the area above and effectively shields the top gap. Even if the baffle 26 is not completely attached to the upper edge, it can still block most pollutants from entering and maintain the cleanliness of the drying chamber.

[0060] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An inkjet printer with a dustproof and ventilated structure, characterized in that, Includes a printer platform (1) and a housing (2) mounted on the printer platform (1), the top of which is provided with a ventilation assembly; The top of the hood (2) is provided with a plurality of ventilation holes (21), and the plurality of ventilation holes (21) are arranged in a rectangular array to form a ventilation area (200), and the ventilation assembly is installed on the ventilation area (200); The ventilation assembly includes a centrifugal fan (31), a static pressure box (32), and a high-efficiency filter (33). The static pressure box (32) has an air inlet (321) at the top. The centrifugal fan (31) is installed inside the air inlet (321), and the high-efficiency filter (33) is installed at the bottom of the static pressure box (32).

2. The inkjet printer with a dustproof and ventilated structure as described in claim 1, characterized in that, The static pressure box (32) is provided with a support plate (322) and two auxiliary plates (323) inside. The centrifugal fan (31) is installed in the center of the support plate (322), and the two auxiliary plates (323) are located on both sides of the support plate (322). The two sides of the support plate (322) extend above the sub-plate (323).

3. The inkjet printer with a dustproof and ventilated structure as described in claim 1, characterized in that, The machine cover (2) is a box structure consisting of a top plate, a front side plate (22), a rear side plate (23), a first end side plate (24), and a second end side plate (25); The first end plate (24) is located at the discharge end of the printer platform (1), and an opening (241) is provided on the first end plate (24) for exporting the completed printed material.

4. The inkjet printer with a dustproof and ventilated structure as described in claim 3, characterized in that, A baffle (26) is slidably installed on the outside of the opening (241) to cover the opening (241), and a screw (261) is threadedly connected to the top of the baffle (26). The printer platform (1) is provided with abutment blocks (11) on both sides and located directly below the baffle (26); A fixing member (27) is also provided on the outside of the opening (241), and the fixing member (27) is located above the baffle (26); The fastener (27) has a hole (271) for mounting the end of the screw (261); When the baffle (26) is fixedly connected to the fastener (27), the opening (241) is in an open state; When the baffle (26) is released from the fixed connection with the fixing member (27), the baffle (26) slides down under the action of gravity and abuts against the upper surface of the abutting block (11), and the opening (241) is in a closed state.

5. The inkjet printer with a dustproof and ventilated structure as described in claim 4, characterized in that, A slide rail (2411) is provided on both sides of the opening (241). A retaining plate (262) is provided on both sides of the side of the baffle (26) near the slide rail (2411). The retaining plate (262) is slidably connected to the slide rail (2411).

6. The inkjet printer with a dustproof and ventilated structure as described in claim 5, characterized in that, The slide rail (2411) has an arc-shaped curved edge (24111) on each side. The clamping plate (262) has two cylindrical clamping rods (2621) and a reinforcing plate (2622) on the side facing the slide rail (2411). The two clamping rods (2621) are fixedly connected to the two sides of the reinforcing plate (2622) respectively. The two locking rods (2621) are respectively locked to the two curved edges (24111).

7. The inkjet printer with a dustproof and ventilated structure as described in claim 1, characterized in that, The top of the hood (2) is provided with four upright plates (28), and the four upright plates (28) are respectively located at the four corners of the ventilation area (200). The static pressure box (32) is connected to the four upright plates (28) by bolts.

8. The inkjet printer with a dustproof and ventilated structure as described in claim 3, characterized in that, A window (221) is provided on the front side panel (22), and a flip cover (222) is rotatably connected inside the window (221). The top of the flip cover (222) is connected to the top of the window (221) by a hinge.

9. The inkjet printer with a dustproof and ventilated structure as described in claim 4, characterized in that, A horizontal plate (242) is also provided on the first end side plate (24). The horizontal plate (242) is located on the top outside of the opening (241). The width of the horizontal plate (242) is equal to the minimum distance between the front side plate (22) and the baffle (26).

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