CN112721472B - Air circulation ventilation system - Google Patents
Air circulation ventilation system Download PDFInfo
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- CN112721472B CN112721472B CN202011579993.4A CN202011579993A CN112721472B CN 112721472 B CN112721472 B CN 112721472B CN 202011579993 A CN202011579993 A CN 202011579993A CN 112721472 B CN112721472 B CN 112721472B
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- air
- filter
- ink supply
- compartment
- printer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/377—Cooling or ventilating arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/88—Replacing filter elements
Abstract
The invention discloses an air circulation ventilation system, which relates to the field of printer cooling and filtering and comprises the following components: a power supply disposed within the electronics compartment; the first radiator is arranged on the partition plate and positioned in the ink supply system compartment, and the first radiator is used for being coupled with a controller which is arranged on the partition plate and positioned in the electronic compartment; the filtering mechanism is used for being movably connected to the main structure of the printer and sealing the ink supply system compartment in a closed state and forming a first air guide channel with the first radiator, the filtering mechanism comprises a frame body, a first fan and a filtering device are accommodated in the frame body, and the first fan is configured to: and the filter mechanism is connected with the power supply only when closed in place, so that air outside the main structure of the printer is filtered by the filter device and then is conveyed to the ink supply system compartment through the first air guide channel. The air circulation ventilation system can reduce the dust amount entering the ink supply system compartment.
Description
Technical Field
The invention relates to the field of printer cooling and filtering, in particular to an air circulation and ventilation system.
Background
Continuous ink jet printers are commonly used to code or mark mass-produced products in an industrial environment where simple coding at high speeds is required. Such as the labeling of bar codes, expiration dates for food products, or lot codes, all of which are printed directly on the products on the production line.
Printers typically include an air circulation ventilation system to remove solvent vapors and maintain their concentration within safe limits. Since printers are commonly used in industrial environments, dust or other fine particles may also be drawn into the air circulation system of the printer. Therefore, the air circulation system typically includes a filter or a filter module to remove the above dust or particles.
However, the prior art air circulation system, while addressing the need to remove solvent vapor from the printer and cool the electronics and/or pump, neglects one important issue: the ink supply compartment must be opened from time to time as needed to replenish the ink and solvent consumed by the printer in producing the codes and indicia. When the ink supply compartment is open, the air circulation system draws air into the ink supply compartment and bypasses the filter system. Unfiltered air is likely to enter the ink supply module through the openings, often resulting in dust entering the ink supply module. The problem is exacerbated if the user fails to close the opening of the ink supply compartment after refilling with ink and/or solvent.
Disclosure of Invention
In view of the shortcomings in the prior art, it is a first aspect of the present invention to provide an air circulation ventilation system that reduces the amount of dust entering the compartment of an ink supply system.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the utility model provides an air circulation ventilation system, it locates printer major structure is last, be equipped with a baffle in the printer major structure, the baffle will printer major structure divide into electron compartment and ink feeding system compartment, includes:
a power supply disposed within the electronics compartment;
the first radiator is arranged on the partition plate and positioned in the ink supply system compartment, and the first radiator is used for being coupled with a controller which is arranged on the partition plate and positioned in the electronic compartment;
the filtering mechanism is movably connected to the main printer body structure, and is used for sealing the ink supply system compartment in a closed state and forming a first air guide channel with the first radiator, the filtering mechanism comprises a frame body, a first fan and a filtering device are accommodated in the frame body, and the first fan is configured to: and the air outside the main structure of the printer is filtered by the filtering device and then is conveyed to the ink supply system compartment through the first air guide channel.
In some embodiments, the filtration device comprises:
a filter element accommodated in the frame;
the filter cover, its one end with framework swing joint, the other end detachably with the framework joint, filter cover be used for with when the framework joint targets in place, will filter the core and fix in the framework.
In some embodiments, a first air inlet communicated with the filter element is disposed at the bottom of the frame, a first air outlet communicated with the first air guiding channel is disposed on the filter cover, and the first fan is disposed between the filter element and the first air outlet.
In some embodiments, the air circulation ventilation system further comprises:
the second air guide channel is formed by the filtering mechanism and an ink supply module shell of the ink supply module positioned in the ink supply system compartment;
a second air inlet arranged at the top of the ink supply module shell, a second air outlet arranged at the bottom of the ink supply module shell and a third air guide channel formed in the ink supply module shell cavity;
the fourth air guide channel is arranged at the bottom of the ink supply module shell and is communicated with the ink supply system compartment;
and two ends of the second air guide channel and the third air guide channel are respectively communicated with the first air guide channel and the fourth air guide channel.
In some embodiments, the fourth air guiding channel is communicated with the outside of the ink supply system compartment through a third air outlet disposed in a support leg at the bottom of the main body structure of the printer.
In some embodiments, the filter element is a foam or woven mesh-shaped porous device, a sealing element is further arranged along the circumferential direction of the filter element, a protrusion is arranged on the filter cover, and when the filter cover is clamped with the frame body, the protrusion is used for extruding the filter element to be matched with the sealing element for sealing.
In some embodiments, the air circulation ventilation system further includes a filter bag disposed in the second air guiding channel, one end of the filter bag is used for being clamped on the protrusion, the other end of the filter bag is used for being abutted against the mixing tank of the ink supply module, and the filter bag is located above the main pump in the ink supply system compartment.
In some embodiments, further comprising:
a second fan disposed within the electronics compartment and connected to the power source;
and the second radiator is arranged in the electronic compartment and is positioned at one side of the power supply so as to be matched with the second fan to radiate the heat of the electronic compartment.
In some embodiments, the filter mechanism is further provided with an indicating device, and the indicating device is configured to display information to determine whether the filter mechanism is closed in place.
In some embodiments, the air circulation ventilation system further comprises a sensor for placement on the printer body structure, the sensor for detecting whether the first fan is connected to the power source and alerting when not connected. Compared with the prior art, the invention has the advantages that:
the air circulation ventilation system comprises a filter mechanism, wherein a first fan in the filter mechanism is electrified to work only when the filter mechanism is closed to a proper position, so that the situation that dust enters an ink supply system compartment due to the opening of the filter mechanism when an ink box and/or a solvent box needs to be replaced is avoided, and possible pollution is reduced to the minimum.
Drawings
FIG. 1 is a perspective view of an air circulation ventilation system and printer in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view illustrating the opening of a filter cover in the filter mechanism according to the embodiment of the present invention;
FIG. 4 is a schematic view of the filter cover closing in the filter mechanism according to the embodiment of the present invention.
In the figure: 1-a power supply, 2-a first radiator, 3-a filtering mechanism, 31-a frame body, 311-a first air inlet, 32-a first fan, 33-a filtering device, 331-a filtering core, 332-a filtering cover, 333-a first air outlet, 334-a sealing element, 335-a bulge, 336-a cantilever buckle connecting piece, 34-an indicating device, 4-a first air guide channel, 5-a second air guide channel, 6-a third air guide channel, 7-a fourth air guide channel, 8-a filtering bag, 9-a second radiator, 100-a printer main body structure, 110-a clapboard, 120-an electronic compartment, 121-a controller, 122-a second fan, 130-an ink supply system compartment, 131-an ink supply module and 132-an ink supply module shell, 133-a second air inlet, 134-a second air outlet, 135-a mixing tank, 136-a pivot, 137-an ink supply module controller, 140-a support leg, 141-a third air outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.
Referring to fig. 1 and 2, an embodiment of the present invention provides an air circulation ventilation system, which is disposed on a main body structure 100 of a printer, wherein a partition 110 is disposed in the main body structure 100 of the printer, and the partition 110 divides the main body structure 100 of the printer into an electronic compartment 120 and an ink supply system compartment 130.
The air circulation ventilation system in this embodiment includes a power supply 1, a first radiator 2, and a filter mechanism 3.
Wherein the power supply 1 is provided within the electronics compartment 120. The electronics compartment 120 is provided with a controller 121, and the controller 121 is connected to various sensors and devices through a plurality of wires that pass through the electronics compartment 120 and into the ink supply compartment 130. It will be appreciated that the controller 121 will typically include a processor and memory for transmitting control data.
The first heat sink 2 is disposed on the partition 110 and located in the ink supply compartment 130, and the first heat sink 2 is configured to couple with the controller 121 disposed on the partition 110 and located in the electronic compartment 120. The first heat sink 2 and the controller 121 are coupled to circulate air to remove heat from the electronics compartment 120.
The filter mechanism 3 is used for being movably connected to the main body structure 100 of the printer, and is used for sealing the ink supply system compartment 130 in a closed state and forming a first air guiding channel 4 with the first radiator 2.
It is noted that the ink supply system compartment 130 is a hollow body, which is generally rectangular in shape. The ink supply system compartment 130 has a top and a bottom, and three generally vertical side walls, and an opening is formed in a fourth vertical plane. Typically, the three vertical side walls are made of stainless steel, and the filter mechanism 3 corresponds to a door for covering the opening of the ink supply system compartment 130. in this embodiment, the filter mechanism 3 is mounted on a pivot 136 at the bottom of the ink supply system compartment 130, is opened and closed by pivoting about the pivot 136, and closes a space for accommodating the ink supply module 131 when closed.
Referring to fig. 3 and 4, the filter mechanism 3 in the present embodiment includes a frame 31, the frame 31 accommodating therein a first fan 32 and a filter device 33, the first fan 32 being configured to: the filter mechanism 3 is connected to the power supply 1 only when it is closed in place, so that air outside the main body structure 100 of the printer is filtered by the filter device 33 and then is delivered to the ink supply system compartment 130 through the first air guide passage 4. The number of the first fans 32 may be set reasonably, for example, two fans may be set, and this embodiment does not limit this.
The filter device 33 includes a filter 331 and a filter cover 332, the filter 331 is accommodated in the frame 31, the filter cover 332 has one end movably connected to the frame 31 and the other end detachably engaged with the frame 31, and the filter cover 332 is used for fixing the filter 331 in the frame 31 when engaged with the frame 31.
Preferably, the bottom of the filter lid 332 in this embodiment contains two hinge features that connect to two gears located at the bottom of the frame 31. Once the hinge and the gear are coupled together, the filter cover 332 may rotate about the axis of the hinge, thereby achieving opening and closing. The top of the filter lid 332 is held in place by two releasable cantilever snap connectors 336, which are releasable from mating surfaces within the frame 31 so that the filter lid 332 can be opened.
In normal use, the filter mechanism 3 is in a closed position to form a seal with the ink supply system compartment 130 to prevent solvent vapor from escaping through the filter mechanism 3. A first air inlet 311 is provided at the bottom of the frame 31. When the filter mechanism 3 is closed, the first air inlet 311 is parallel to the surface on which the printer is placed, so that air drawn through the first air inlet 311 will flow perpendicular to the surface on which the printer is mounted.
In this embodiment, the filter 331 is located between the first air inlet 311 and the first fan 32, and the first fan 32 is located between the filter 331 and the first air outlet 333 of the filter cover 332. The first air outlet 333 is communicated with the first air guiding channel 4. In use, the at least one first fan 32 draws air into the first air inlet 311, and the air passes through the filter 331, flows through the first fan 32, flows out through the first air outlet 333, passes through the first heat sink 2, flows in the first air guiding channel 4, and flows toward the ink supply system compartment 130.
It is noted that the filter 331 in this embodiment is a consumable that must be replaced when it becomes clogged with dust particles. When it is desired to remove the filter element 331, the filter mechanism 3 is first opened to gain access to the inner surface thereof, and then the filter cover 332 is opened by the cantilever snap-fit connection 336, so that the filter element 331 can be replaced.
The filter 331 can be any type of porous device, such as foam or woven mesh. The filter 331 is generally rectangular, and preferably, for better sealing, a sealing member 334 is further provided along the circumference of the filter 331, and a protrusion 335 is provided on the filter cover 332, wherein when the filter cover 332 is engaged with the frame 31, the protrusion 335 is used to press the filter 331 to cooperate with the sealing member 334 for sealing. Sealing ensures that at least one first fan 32 at the top of the filter mechanism 3 draws air into the filter 331 and does not leak around the edges of the filter 331 and allow unfiltered air to enter the ink supply compartment 130.
The air passing through the first heat sink 2 provides a cooling function to the controller 121 within the sealed electronics compartment 120. In some embodiments, a second fan 122 and a second heat sink 9 are also provided within the electronics compartment 120. A second fan 122 is disposed within the electronics compartment 120 and is connected to the power source 1. The second heat sink 9 is disposed within the electronics compartment 120 and on the side of the power supply 1. A second fan 122 circulates air within the electronics compartment 120 and across the surface of the controller 121, the second fan 122 being powered by the power supply 1 to support convection and ensure that the heated air interacts with a second heat sink 9 mounted inside the electronics compartment 120 to dissipate heat.
In some embodiments, the air circulation ventilation system further comprises:
and a second air guide passage 5 formed by the filter mechanism 3 and an ink supply module case 132 of the ink supply module 131 located in the ink supply system compartment 130. And a third air guide channel 6 formed by a second air inlet 133 arranged at the top of the ink supply module shell 132, a second air outlet 134 arranged at the bottom of the ink supply module shell 132 and the cavity of the ink supply module shell 132. And the fourth air guide channel 7 is arranged at the bottom of the ink supply module shell 132 and is communicated with the outside of the ink supply system compartment 130.
Two ends of the second air guide channel 5 and two ends of the third air guide channel 6 are respectively communicated with the first air guide channel 4 and the fourth air guide channel 7.
Thus, after passing through the first heat sink 2 in the ink supply module chamber 60 from the filter mechanism 3, the air can pass through the second air guiding passage 5 in an area outside the ink supply module 131, or can pass through the ink supply module 131 through the third air guiding passage 6. The air flowing through the ink supply module 131 first passes through the ink supply module controller 137 and then flows through the remaining components of the ink supply module 131.
In order to facilitate the air discharge, a third air outlet 141 is further provided in the leg 140 at the bottom of the main body structure 100 of the printer, and the third air outlet 141 is communicated with the fourth air guiding channel 7, so that the fourth air guiding channel 7 can be communicated with the outside of the ink supply system compartment 130 through the third air outlet 141 provided in the leg 140 at the bottom of the main body structure 100 of the printer, so as to discharge the air of the second air guiding channel 5 and the third air guiding channel 6. In this embodiment, the printer body structure 100 is provided with 4 feet 140 at the bottom, so that the feet 140 contact the floor or other horizontal support surface during normal use. The standoffs 140 raise the height of the ink supply system compartment 130 to enable the filter mechanism 3 to swing at least 90 ° from the closed position about the pivot 136 at the bottom of the ink supply system compartment 130.
In addition, since the air after cooling the electronic compartment 120 may be very hot, in a preferred embodiment, the air circulation ventilation system further includes a filter bag 8 disposed in the second air guiding channel 5, and one end of the filter bag 8 is adapted to be clamped on the protrusion 335, and the other end is adapted to be supported on the mixing tank 135 of the ink supply module 131, and the filter bag 8 is located above the main pump in the ink supply system compartment 130. Since the main pump is located below the filter cartridge 8, the filter cartridge 8 may deflect air away from the main pump.
It should be noted that since the first fan 32 in the present application is configured to be connected to the power source 1 only when the filter means 3 are switched off in place, that is to say only when the filter means 3 are correctly switched off, the air circulation ventilation system will operate effectively. Otherwise, if the filter mechanism 3 is slightly opened, the amount of air reaching the first radiator 2 through the first air guiding passage 4 will be reduced, so that the controller 53 in the electronic compartment 120 is overheated. In addition, air flow from the opening will push air in the ink supply system compartment 130, and unfiltered air will be drawn from the surrounding environment by the turbulence created thereby. Furthermore, since the user needs to open the filter mechanism 3 from time to replace the ink cartridge and/or the solvent cartridge, there is an increased risk that the filter mechanism 3 will not be properly shut down, thereby affecting the performance of the air circulation system.
Therefore, in this embodiment, the first fan 32 is only connected to the power supply 1 when the filter mechanism 3 is turned off, so as to reduce the amount of dust entering the ink supply system compartment 130 when the ink cartridge and/or the solvent box is replaced.
In addition, in order to be able to assist in determining whether the filter mechanism 3 is closed in place, the filter mechanism 3 is also provided with an indicator device 34 for communicating to the user that the filter mechanism 3 is properly closed. In particular, the indication device 34 may be a single light source, such as an LED that may produce multiple colors of light, or a set of different colored LEDs. The light source projects light from the bottom of the filter mechanism 3 onto the surface under the printer to clearly show the status of the printer to the user. For example, a green light may be used to indicate that the printer is running and ready to print, and yellow may indicate that the printer is running but needs to be checked, e.g., the consumable container is empty and needs to be replaced; the red color indicates that an error occurs and the printer cannot print, and it can be understood that the filter mechanism 3 is closed in place as a precondition for normal printing by the printer.
Further, the air circulation ventilation system further includes a sensor for detecting whether the first fan 32 is connected to the power supply 1 or not, provided on the printer main body structure 100, and giving an alarm when not connected. Thus, the air circulation ventilation system ensures that the filter mechanism 3 remains closed and minimizes the amount of dust that may enter the ink supply system compartment 130.
In summary, the air circulation system of the present invention includes a filter mechanism 3, and the first fan 32 in the filter mechanism 3 is powered only when the filter mechanism 3 is closed, so as to avoid dust entering the ink supply system compartment 130 due to opening the filter mechanism 3 when the ink cartridge and/or the solvent box needs to be replaced, thereby minimizing possible contamination.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; 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 by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An air circulation ventilation system, it locates on printer major structure (100), be equipped with a baffle (110) in printer major structure (100), baffle (110) will printer major structure (100) divide into electron compartment (120) and ink feeding system compartment (130), its characterized in that includes:
a power source (1) disposed within the electronics compartment (120);
a first heat sink (2) disposed on the partition (110) and located within the ink supply system compartment (130), the first heat sink (2) for coupling with a controller (121) disposed on the partition (110) and located within the electronics compartment (120);
-a filtering mechanism (3) for articulated connection to the main printer structure (100) and for sealing the ink supply compartment (130) in a closed condition and forming with the first radiator (2) a first air duct (4), the filtering mechanism (3) comprising a frame (31), the frame (31) housing a first fan (32) and a filtering device (33), the first fan (32) being configured to: the air filter mechanism (3) is connected with the power supply (1) only when being closed in place, so that air outside the main body structure (100) of the printer is filtered by a filter device (33) and then is conveyed to the ink supply system compartment (130) through the first air guide channel (4);
a second air guiding channel (5) formed by the filtering mechanism (3) and an ink supply module shell (132) of an ink supply module (131) positioned in the ink supply system compartment (130);
a third air guide channel (6) formed by a second air inlet (133) arranged at the top of the ink supply module shell (132), a second air outlet (134) at the bottom and the cavity of the ink supply module shell (132);
the fourth air guide channel (7) is arranged at the bottom of the ink supply module shell (132) and is communicated with the outside of the ink supply system compartment (130);
the two ends of the second air guide channel (5) and the third air guide channel (6) are respectively communicated with the first air guide channel (4) and the fourth air guide channel (7).
2. The air circulation ventilation system of claim 1, wherein: the filtering device (33) comprises:
a filter element (331) housed in the frame (31);
one end of the filtering cover (332) is movably connected with the frame body (31), the other end of the filtering cover is detachably clamped with the frame body (31), and the filtering cover (332) is used for fixing the filtering core (331) in the frame body (31) when being clamped in place with the frame body (31).
3. The air circulation ventilation system of claim 2, wherein: the bottom of the frame body (31) is provided with a first air inlet (311) communicated with the filter core (331), the filter cover (332) is provided with a first air outlet (333) communicated with the first air guide channel (4), and the first fan (32) is arranged between the filter core (331) and the first air outlet (333).
4. The air circulation ventilation system of claim 1, wherein: the fourth air guide channel (7) is communicated with the outside of the ink supply system compartment (130) through a third air outlet (141) arranged in a support leg (140) at the bottom of the printer main body structure (100).
5. The air circulation ventilation system of claim 2, wherein: the utility model discloses a filter, including filter core (331), filter lid (332), protruding (335), filter core (331) and sealing member (334), filter core (331) is the foam or weave netted porous device, and follows the circumference of filter core (331) still is equipped with sealing member (334), be equipped with protruding (335) on filter lid (332), work as filter lid (332) with during framework (31) joint, protruding (335) are used for the extrusion filter core (331) with sealing member (334) cooperation is sealed.
6. The air circulation and ventilation system as claimed in claim 5, further comprising a filter pack (8) disposed in the second air guiding channel (5), wherein one end of the filter pack (8) is adapted to be clamped on the protrusion (335), the other end is adapted to be supported on the mixing tank (135) of the ink supply module (131), and the filter pack (8) is located above the main pump in the ink supply system compartment (130).
7. The air circulation ventilation system of claim 1, further comprising:
a second fan (122) disposed within the electronics compartment (120) and connected to the power source (1);
a second heat sink (9) disposed within the electronics compartment (120) and located on a side of the power source (1) to cooperate with the second fan (122) to dissipate heat from the electronics compartment (120).
8. The air circulation ventilation system of claim 1, wherein: the filter mechanism (3) is also provided with an indicating device (34), and the indicating device (34) is configured to display information to determine whether the filter mechanism (3) is closed in place.
9. The air circulation ventilation system of claim 1, wherein: the air circulation ventilation system also comprises a sensor arranged on a main body structure (100) of the printer, and the sensor is used for detecting whether the first fan (32) is connected with the power supply (1) or not and giving an alarm when the first fan is not connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579993.4A CN112721472B (en) | 2020-12-25 | 2020-12-25 | Air circulation ventilation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579993.4A CN112721472B (en) | 2020-12-25 | 2020-12-25 | Air circulation ventilation system |
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| CN112721472A CN112721472A (en) | 2021-04-30 |
| CN112721472B true CN112721472B (en) | 2022-08-05 |
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| CN202011579993.4A Active CN112721472B (en) | 2020-12-25 | 2020-12-25 | Air circulation ventilation system |
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| CN114248570A (en) * | 2021-12-02 | 2022-03-29 | 镭德杰标识科技武汉有限公司 | Ink jet numbering machine heat dissipation exhaust system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7909918B2 (en) * | 2007-08-15 | 2011-03-22 | Trane International, Inc. | Air filtration system |
| FR2955801B1 (en) * | 2010-02-01 | 2012-04-13 | Markem Imaje | DEVICE FORMING A CONTINUOUS INK JET PRINTER WITH SOLVENT VAPOR CONCENTRATIONS INSIDE AND AROUND THE DECREASED PUPITRE |
| GB201510456D0 (en) * | 2015-06-15 | 2015-07-29 | Videojet Technologies Inc | Apparatus for printing |
| CN207123063U (en) * | 2017-08-29 | 2018-03-20 | 北京三五二环保科技有限公司 | New blower fan screen net accelerator control system |
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