Air inlet flow channel structure capable of slowing down reverse flow of liquid

Abstract

The utility model relates to the technical field of ink boxes, in particular to an air inlet flow channel structure capable of slowing down reverse flow of liquid, which comprises a bottom shell, a surface cover is covered at the top end of the bottom shell, an ink storage cavity and an air guide assembly are formed after the bottom shell and the surface cover are covered, and the air guide assembly comprises a Tesla one-way circulation structure. According to the utility model, for the ink box with a pressurization function, at the moment when the sealing film is torn off, the air guide assembly is arranged to slow down the backflow of the ink carried by the air, so that the phenomenon that the ink flows reversely and is sprayed out can be prevented; meanwhile, when the ink box with the air guide hole is filled with the ink, the air guide assembly is arranged to slow down the situation that the air with the ink enters a flow channel of the air guide hole.

Description

Technical Field

[0001] This utility model relates to the field of ink cartridge technology, specifically to an air intake channel structure that can slow down the reverse flow of liquid. Background Technology

[0002] Ink cartridges are components in inkjet printers (including inkjet multifunction printers) that store printing ink and ultimately complete the printing process. In practical applications, ink cartridges generally have air intake channels that can slow down the reverse flow of liquid and air vents. Some ink cartridges also have pressurization functions.

[0003] However, under normal circumstances, pressurized ink cartridges operate at relatively high ambient temperatures, which causes the gas inside the cartridge to expand and generate pressure. When the sealing film is torn off, the gas can easily flow backwards and spray out, carrying the ink liquid. At the same time, when the ink cartridge is being filled with ink, because the inside of the cartridge is in a vacuum state, existing ink cartridges with vent holes are prone to ink flowing into the vent hole channels during filling. Utility Model Content

[0004] The purpose of this invention is to provide an air intake channel structure that can slow down the reverse flow of liquid, so as to solve the problem mentioned in the background art that existing ink cartridges are prone to gas carrying ink liquid in reverse flow and being ejected.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an air intake channel structure capable of mitigating reverse liquid flow, comprising a bottom shell, the top of which is covered by a top cover, wherein the bottom shell and the top cover together form an ink storage cavity and an air guiding assembly, the air guiding assembly comprising a Tesla unidirectional flow channel structure.

[0006] Preferably, an air inlet chamber is provided on the surface of the bottom shell and on one side of the air guide assembly, which is used for air intake; an air inlet hole is provided on one side inside the air inlet chamber, which penetrates the bottom shell.

[0007] Preferably, a sponge groove is provided at the end of the bottom shell away from the air inlet cavity, and an air outlet is provided on the side of the sponge groove near the air guide component. The air outlet can connect the sponge groove and the ink storage cavity structure.

[0008] Preferably, the interior of the sponge groove is filled with sponge blocks; an air passage is formed on the surface of the bottom shell on one side of the sponge groove, and the air passage and the sponge groove are interconnected through an air passage.

[0009] Preferably, the air guiding assembly further includes a swirling groove and a counterflow bar, the Tesla one-way flow channel structure is opened inside the bottom shell, and the two ends of the Tesla one-way flow channel structure are respectively connected to the air intake chamber and the air passage deep groove.

[0010] Preferably, the Tesla unidirectional flow channel structure is provided with swirling grooves on the left and right sides, and the swirling grooves on the left and right sides are alternately arranged. The swirling grooves expand and swirl outward from the sponge groove along the direction of the air intake cavity. The inside of the counterflow strip is integrally injection molded with a counterflow strip with a chamfer at the front. The counterflow strip can reduce the outward counterflow, and at the same time, the chamfer at the front of the air intake cavity can increase the downstream flow velocity.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: The air intake channel structure, which can slow down the reverse flow of liquid, incorporates an air guide component. When adding ink or removing the sealing film, the ink enters the Tesla one-way flow channel structure through the air outlet, sponge groove, and deep air passage. Because swirling grooves are set on both sides of the Tesla one-way flow channel structure, and counterflow strips are installed in the swirling grooves, the ink entering the Tesla one-way flow channel structure is prevented from continuing to flow backward through the swirling grooves and counterflow strips. Simultaneously, the air guide component also slows down the backflow of ink carried by gas. When this invention is applied to ink cartridges with pressurization functions, the air guide component slows down the backflow of ink carried by gas at the moment the sealing film is removed, thereby preventing the ink from spraying out due to reverse liquid flow. Furthermore, when filling ink cartridges with air guide holes, the air guide component slows down the entry of ink carried by gas into the flow channel of the air guide hole. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a three-dimensional exploded structural diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the enlarged left-side oblique view structure of this utility model;

[0015] Figure 4 This is a partial oblique magnified structural diagram of the present invention;

[0016] Figure 5 This is a partial top-view enlarged structural schematic diagram of the present invention.

[0017] In the diagram: 1. Bottom shell; 1.1. Air inlet chamber; 1.11. Air inlet hole; 1.2. Sponge groove; 1.20. Air outlet hole; 1.21. Deep air passage groove; 1.22. Air passage port; 1.3. Sponge block; 1.4. Air guide assembly; 1.41. Tesla one-way flow channel structure; 1.42. Swirl groove; 1.43. Counterflow strip; 1.5. Ink storage chamber; 2. Top cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are only used to describe the air intake channel structure to slow down the reverse flow of liquid, and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. 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 scope of protection of the present utility model.

[0019] This utility model provides an airflow channel structure that can slow down the reverse flow of liquid, such as... Figure 1 as well as Figure 2 As shown, the device includes a bottom shell 1, with a top cover 2 covering the top of the bottom shell 1. When the bottom shell 1 and the top cover 2 are closed, an ink storage chamber 1.5 and an air guiding component 1.4 are formed. The air guiding component 1.4 can slow down the reverse flow of ink liquid. An air inlet chamber 1.1 is provided on the surface of the bottom shell 1 and on one side of the air guiding component 1.4. The air inlet chamber 1.1 is used for air intake. An air inlet hole 1.11 is provided on one side inside the air inlet chamber 1.1. The air inlet hole 1.11 penetrates the bottom shell 1. At the same time, a removable sealing film is attached to the back of the bottom shell 1 at the location of the air inlet hole 1.11.

[0020] During implementation, the sealing film is torn off, and air is introduced into the air intake chamber 1.1 through the air intake hole 1.11, and then into the main air passage deep groove 1.21 through the air guide assembly 1.4 from the air intake chamber 1.1.

[0021] Furthermore, such as Figure 3 as well as Figure 4 As shown, a sponge groove 1.2 is provided at the end of the bottom shell 1 away from the air inlet cavity 1.1. An air outlet 1.20 is provided on the side of the sponge groove 1.2 near the ink storage cavity 1.5. The air outlet 1.20 can connect the sponge groove 1.2 and the ink storage cavity 1.5. The inside of the sponge groove 1.2 is filled with a breathable sponge block 1.3. An air passage groove 1.21 is provided on the surface of the bottom shell 1 and on one side of the sponge groove 1.2. The air passage groove 1.21 and the sponge groove 1.2 are connected to each other through an air outlet 1.22.

[0022] During implementation, gas enters the sponge trough 1.2 through the air inlet 1.22 and finally enters the ink storage chamber 1.5 through the air outlet 1.20, thus realizing the gas guiding operation.

[0023] Furthermore, such as Figure 4 as well as Figure 5 As shown, the air guide assembly 1.4 includes a Tesla one-way flow channel structure 1.41, a swirling groove 1.42, and a counterflow bar 1.43. The Tesla one-way flow channel structure 1.41 is located inside the bottom shell 1, and its two ends are connected to the air intake chamber 1.1 and the deep air passage groove 1.21, respectively. Swirling grooves 1.42 are provided on the left and right sides of the Tesla one-way flow channel structure 1.41, and the swirling grooves 1.42 on the left and right sides are alternately arranged. The swirling grooves 1.42 expand and swirl outward from the sponge groove 1.2 along the direction of the air intake chamber 1.1. The counterflow bar 1.43 is integrally injection molded with a counterflow bar 1.43 with a chamfer at the front. The counterflow bar 1.43 can reduce the outward counterflow, and the chamfer at the front of the air intake chamber 1.1 can increase the downstream flow velocity.

[0024] During implementation, ink enters the Tesla one-way flow channel structure 1.41 through the vent 1.20, sponge groove 1.2, and deep vent groove 1.21. Since swirling grooves 1.42 are set on the left and right sides of the Tesla one-way flow channel structure 1.41, and counterflow strips 1.43 are set in the swirling grooves 1.42, the ink entering the Tesla one-way flow channel structure 1.41 will be prevented from continuing to flow out in reverse by passing through the swirling grooves 1.42 and the counterflow strips 1.43.

[0025] Working principle: When the ink cartridge is in use, air needs to be introduced into the ink storage chamber 1.5 to maintain a slight negative pressure inside the ink storage chamber 1.5. During the air introduction, the sealing film is torn off, and air enters into the air intake chamber 1.1 through the air inlet 1.11. Then, the air enters the main air passage groove 1.21 through the air guide assembly 1.4 from the air intake chamber 1.1, and enters the sponge groove 1.2 through the air outlet 1.22. Finally, the air enters the ink storage chamber 1.5 through the air outlet 1.20, thus realizing the air introduction work.

[0026] However, under normal circumstances, the ambient temperature when the ink cartridge is working normally is relatively high, which causes the gas inside the ink cartridge to expand and generate a certain pressure. At the moment the sealing film is torn off, the present invention uses the air guide component 1.4 to slow down the backflow of gas carrying ink, thereby preventing the ink from flowing backward and spraying out. At the same time, when filling ink cartridges with air guide holes, since the inside of the ink cartridge is in a vacuum state, the present invention uses the air guide component 1.4 to slow down the flow of gas carrying ink into the air guide hole channel.

[0027] Specifically, when ink is added to the ink storage chamber 1.5 or the sealing film is removed, the ink enters the Tesla one-way flow channel structure 1.41 through the vent 1.20, sponge groove 1.2, and deep vent groove 1.21. Since swirling grooves 1.42 are set on the left and right sides of the Tesla one-way flow channel structure 1.41, and counterflow strips 1.43 are set in the swirling grooves 1.42, the ink entering the Tesla one-way flow channel structure 1.41 will be prevented from continuing to flow out in reverse through the swirling grooves 1.42 and the counterflow strips 1.43. At the same time, the gas guide component 1.4 also slows down the backflow of gas carrying ink.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An air intake duct structure capable of slowing down the reverse flow of liquid, comprising a bottom shell (1), characterized in that: The top of the bottom shell (1) is covered with a top cover (2). After the bottom shell (1) and the top cover (2) are closed, an ink storage cavity (1.5) and an air guiding assembly (1.4) are formed. The air guiding assembly (1.4) includes a Tesla unidirectional flow channel structure (1.41).

2. The air inlet passage structure capable of slowing down reverse flow of liquid according to claim 1, characterized by: An air inlet chamber (1.1) is provided on the surface of the bottom shell (1) and on one side of the air guide assembly (1.4), which is used for air intake. An air inlet hole (1.11) is provided on one side inside the air inlet chamber (1.1), which penetrates the bottom shell (1).

3. The air inlet passage structure capable of slowing down reverse flow of liquid according to claim 2, characterized by: The bottom shell (1) is provided with a sponge groove (1.2) at one end away from the air inlet cavity (1.1); the sponge groove (1.2) is provided with an air outlet (1.20) on the side near the ink storage cavity (1.5), which can connect the sponge groove (1.2) and the ink storage cavity (1.5).

4. The air inlet passage structure capable of slowing down reverse flow of liquid according to claim 3, characterized by: The interior of the sponge groove (1.2) is filled with sponge blocks (1.3); an air passage groove (1.21) is formed on the surface of the bottom shell (1) and on one side of the sponge groove (1.2), and the air passage groove (1.21) and the sponge groove (1.2) are connected to each other through an air passage (1.22).

5. The air inlet passage structure capable of slowing down reverse flow of liquid according to claim 1, characterized by: The air guide assembly (1.4) also includes a swirling groove (1.42) and a counterflow bar (1.43). The Tesla one-way flow channel structure (1.41) is located inside the bottom shell (1), and the two ends of the Tesla one-way flow channel structure (1.41) are respectively connected to the air intake chamber (1.1) and the air passage deep groove (1.21).

6. A gas inlet passage structure capable of slowing the reverse flow of liquid according to claim 5, characterized by: The Tesla unidirectional flow channel structure (1.41) is provided with swirling grooves (1.42) on the left and right sides. The swirling grooves (1.42) on the left and right sides are alternately arranged, and the swirling grooves (1.42) expand and swirl outward from the sponge groove (1.2) along the direction of the air intake chamber (1.1). The internal anti-flow strip (1.43) has an integrally injection molded anti-flow strip (1.43) with a chamfer at the front. The anti-flow strip (1.43) can reduce the outward anti-flow, and at the same time, the chamfer at the front of the anti-flow strip (1.43) can increase the downstream flow velocity.

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