Liquid storage bottle and liquid replenishment system

Abstract

This invention relates to liquid storage bottles and liquid replenishment systems. A liquid storage bottle is provided that can discharge liquid while preventing liquid residue stored therein. The liquid storage bottle has a bottle body and a nozzle for dispensing liquid stored in the bottle body. A first fluid channel, a second fluid channel, and a connecting channel are formed inside the nozzle. Each of the first and second fluid channels opens outwards at the tip of the nozzle and is parallel to each other. The connecting channel opens inwards into the bottle body at the base of the nozzle and communicates with the first and second fluid channels. The inner circumferential surface of the connecting channel is inclined inwards towards the first and second fluid channels.

Description

Technical Field

[0001] This disclosure relates to liquid storage bottles and liquid replenishment systems. Background Technology

[0002] Some liquid canisters used in inkjet or other liquid jetting devices can be replenished using a separately prepared liquid storage bottle. It is required that such a liquid storage bottle for replenishment ensures that the replenished liquid will not accidentally leak and contaminate the user's hands and surroundings. Japanese Patent Application Publication 2019-177567 describes a liquid storage bottle having a bottle body and a cap rotatably attached to the bottle body. The cap can be rotated to a closed state and an open state; in the closed state, the opening of the bottle body is closed to prevent liquid from pouring out of the bottle body, and in the open state, the opening of the bottle body is open to allow liquid to pour out of the bottle body. Therefore, in the liquid storage bottle disclosed in Japanese Patent Application Publication 2019-177567, the liquid storage bottle is only opened when replenishing liquid to the canister, and is otherwise closed, thereby preventing accidental liquid leakage. Summary of the Invention

[0003] However, in the case of the liquid storage bottle disclosed in Japanese Patent Application Publication 2019-177567, even if all the liquid inside the bottle is poured out, liquid will remain inside due to the bottle's structure. Therefore, when the liquid storage bottle is removed from the liquid container after refilling, the remaining liquid will drip from the bottle and adhere to the user's hands and surroundings, making them dirty.

[0004] Therefore, the purpose of this disclosure is to provide a liquid storage bottle and a liquid replenishment system that can spray out liquid while preventing liquid residue from the contents.

[0005] To achieve the above objectives, the present invention provides a liquid storage bottle for storing liquid to be replenished into a liquid tank. The liquid storage bottle includes: a bottle body; and a nozzle for pouring out the liquid stored in the bottle body. A first fluid channel, a second fluid channel, and a connecting channel are formed inside the nozzle. Each of the first and second fluid channels opens outwards from the tip side of the nozzle and is parallel to each other. The connecting channel opens inwards from the base side of the nozzle and communicates with the first and second fluid channels. The inner circumferential surface of the connecting channel is inclined inwards towards the first and second fluid channels.

[0006] In addition, the present invention also provides a liquid replenishment system having a liquid tank and the aforementioned liquid storage bottle, wherein the liquid storage bottle is used to store the liquid to be replenished into the liquid tank.

[0007] Other features of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0008] Figure 1 This is a perspective view of the liquid injection device according to the first embodiment.

[0009] Figure 2 This is a schematic side view of the main parts of the liquid injection device according to the first embodiment.

[0010] Figure 3 This shows how to replenish the liquid. Figure 1 A perspective view of the state of the liquid injection device shown.

[0011] Figure 4 This is a perspective view of a liquid storage bottle according to the first embodiment.

[0012] Figure 5A This is an anatomical view of the liquid storage bottle according to the first embodiment. Figure 5B This is a cross-sectional view showing the main parts of the liquid storage bottle. Figure 5C This is a plan view of the inside of the nozzle.

[0013] Figure 6 This is a cross-sectional view showing the liquid replenishment operation according to the first embodiment.

[0014] Figure 7A , Figure 7B and Figure 7C These are plan views showing variant examples of the connecting channels according to the first embodiment.

[0015] Figure 8A This is a cross-sectional view of the liquid storage bottle according to the second embodiment. Figure 8B This is a plan view of the inside of the nozzle.

[0016] Figure 9 This is a cross-sectional view showing the liquid replenishment operation according to the second embodiment.

[0017] Figure 10A and Figure 10B These are plan views showing variant examples of the nozzle according to the second embodiment. Detailed Implementation

[0018] Embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Although an aspect of the liquid storage bottle and liquid replenishment system of the present disclosure is described using a liquid storage bottle and liquid replenishment system to replenish ink as a liquid into the liquid jetting device, the application of the liquid storage bottle and liquid replenishment system of the present disclosure is not limited to this case.

[0019] [First Embodiment]

[0020] Figure 1 This is a perspective view of a liquid jetting apparatus according to a first embodiment of the present disclosure. Figure 2This is a side view schematically showing the main parts of the liquid injection device of the first embodiment.

[0021] The liquid injection device 200 includes a feeding unit 1, a conveying unit 2, an injection unit 3, a liquid supply unit 4, and a display unit 5.

[0022] Feed unit 1 has a feed roller 10 that separates one sheet of printing media from a stack of sheet-like printing media stored in a tray and supplies the separated printing media to transport unit 2. Transport unit 2 has a transport roller 11 and a media discharge roller 12, both of which transport the printing media supplied from feed unit 1. A platen 13 is disposed between the transport roller 11 and the media discharge roller 12 to support the transported printing media from below. Ejection unit 3 has a carriage 14 located above platen 13 and reciprocating in a direction intersecting the printing media transport direction, and a liquid ejection head 15 mounted on the carriage 14 and ejecting liquids such as ink. Ejection unit 3 can print an image on the printing media supported by platen 13 by ejecting liquid through the liquid ejection head 15 based on image information.

[0023] The liquid supply unit 4 has a liquid tank 16 and a flexible supply pipe 17 connecting the liquid tank 16 to a liquid nozzle 15 via a liquid passage 101. The liquid tank 16 has: a storage chamber 100 inside the liquid tank for storing liquid; a tank body 160 having an inlet 106 for injecting liquid into the storage chamber 100; and a cap 105 that can be detachably attached to the tank body 160 to close the storage chamber 100. Depending on the amount of liquid ejected from the liquid nozzle 15, the liquid stored in the storage chamber 100 is supplied to the liquid nozzle 15 from the liquid passage 101 via the supply pipe 17. At this time, an amount of air equal to the amount of liquid supplied to the liquid nozzle 15 flows into the storage chamber 100 in the liquid tank 16 through an air vent 102 provided on the upper surface of the tank body 160. In this embodiment, four colors of ink (e.g., cyan, magenta, yellow, and black) are used as the liquid, and a liquid tank 16 and a supply pipe 17 are provided for each color of ink. The color of the liquid used is not limited to four colors; it can be one color or two or more colors. Furthermore, in this embodiment, the liquid tank 16 is housed within the main body of the liquid injection device 200, but the location of the liquid tank 16 is not limited to this; the liquid tank can also be located outside the main body of the liquid injection device 200, as long as the liquid can be supplied to the liquid injection head 15.

[0024] Display unit 5 displays information required for operating liquid injection device 200 (operation status, operation items, menus, etc.), and also indicates information prompting the user to replenish liquid tank 16.

[0025] Figure 3 This shows how to replenish the liquid. Figure 1 A perspective view of the state of the liquid injection device shown.

[0026] The user tilts the cover 7 on the front surface of the liquid injection device 200 forward to open it, removes the cap 105 attached to the liquid tank 16 to be replenished, and exposes the inlet 106. Then, using the liquid storage bottle 20 containing the liquid to be replenished, the user replenishes the liquid tank 16 through the exposed inlet 106.

[0027] Figure 4 This is a perspective view of the liquid storage bottle in this embodiment. Figure 5A This is an anatomical view of the liquid storage bottle in this embodiment. Figure 5B These are cross-sectional views showing the main parts of the liquid storage bottle in this embodiment; both show a section including the central axis of the bottle. Figure 5C This is a plan view of the interior of the nozzle constituting the liquid storage bottle of this embodiment, viewed from the base end side.

[0028] The liquid storage bottle 20 is a cylindrical container used to replenish liquid into the liquid tank 16, and together with the liquid tank 16, constitutes the liquid replenishment system of this embodiment. The liquid storage bottle 20 has a bottle body 21 for storing liquid, a nozzle 22 for pouring out the liquid stored in the bottle body 21, and a bottle cap 23 that can be detachably attached to the nozzle 22 to close the tip of the nozzle 22. The upper part of the bottle body 21 is provided with a bottle thread portion 21a having external threads formed on its outer circumferential surface, and the lower part of the nozzle 22 is provided with a cylindrical nozzle thread portion 22a having internal threads formed on its inner circumferential surface. The nozzle 22 is fixed to the bottle body 21 by screwing the internal thread of the nozzle thread portion 22a to the external thread of the bottle thread portion 21a. An annular rib 23a is provided on the bottom surface of the bottle cap 23 (the surface facing the tip of the nozzle 22), and when the bottle cap 23 is attached to the nozzle 22, the annular rib 23a covers the tip of the nozzle 22.

[0029] Inside the nozzle 22, two parallel fluid channels 24 and 25, and a connecting channel 26, are formed. These two fluid channels 24 and 25 open outwards at the tip of the nozzle 22, and... Figure 5C The fluid channels 24 and 25 are formed symmetrically with respect to the central axis (hereinafter referred to as the "central axis") C of the liquid storage bottle 20, i.e., the nozzle 22 (and the bottle body 21). However, if the two fluid channels 24 and 25 are formed at positions opposite each other across the central axis C, the vertical distance between the two fluid channels 24 and 25 can be maximized under the optimal liquid replenishment posture described later, which is preferred for enhancing gas-liquid exchange. Therefore, the formation positions of the fluid channels 24 and 25 do not necessarily have to be symmetrical with respect to the central axis C, as long as they are opposite each other across the central axis C. Figure 5A and Figure 5BCross-sectional views of the central axes of the two fluid channels 24 and 25 are shown respectively.

[0030] The connecting channel 26 has an inner circumferential surface that opens into the bottle body 21 at the base end of the nozzle 22 and slopes inward toward the two fluid channels 24, 25. More specifically, it has an inner circumferential surface that is continuously connected to the inner circumferential surfaces of the two fluid channels 24, 25 without steps. In other words, the shape of the inner circumferential surface of the connecting channel 26 is similar to two oblique cones combined into one, and smoothly connects to the inner circumferential surfaces of the two fluid channels 24, 25 at the apex of each oblique cone. Here, "sloping" means a predetermined angle of inclination θ1 (0 degrees < θ1 < 180 degrees) relative to the central axis C, and includes not only straight-line slopes but also curved slopes in the section including the central axis C. Furthermore, in the following description, when "angle of inclination" is used, it refers to the angle of inclination relative to the central axis C unless otherwise stated.

[0031] An abutment wall 27 is formed on the upper part of the bottle body 21. The abutment wall protrudes annularly from the inner circumferential surface and abuts against the nozzle 22 when the nozzle 22 is fixed to the bottle body 21. The abutment wall 27 slopes inward and upward and has an inner circumferential surface in the shape of a truncated cone, which is continuously connected to the inner circumferential surface of the connecting channel 26 without steps. The slope angle θ2 of the inner circumferential surface of the abutment wall can be arbitrarily set to avoid abrupt narrowing in the region of the connecting channel 26 from the inside of the bottle body 21 to the nozzle 22. Similar to the inner circumferential surface of the connecting channel 26, the inner circumferential surface of the abutment wall 27 is not limited to a straight slope in the cross-section including the central axis C, but can also be sloped in a curve.

[0032] Figure 6 This is a cross-sectional view showing a liquid replenishment operation performed using the liquid replenishment system of this embodiment.

[0033] The body 160 of the liquid tank 16 is generally rectangular in shape, and an adapter 30 is formed on the inclined surface 163 formed between the upper surface 161 and the side surface 162, into which the nozzle 22 of the liquid storage bottle 20 can be inserted. The adapter 30 protrudes cylindrically from the periphery of the inlet 106 for pouring liquid into the storage chamber 100, and has an inner peripheral surface that can mate with the outer peripheral surface of the nozzle 22 of the liquid storage bottle 20.

[0034] During the liquid replenishment operation, the user holds the liquid storage bottle 20 and holds it in the liquid tank 16 by inserting the nozzle 22 of the liquid storage bottle into the adapter 30 of the liquid tank 16. At this time, the liquid (not shown) in the liquid storage bottle 20 flows downward toward the nozzle 22, through one of the two fluid channels 24 and 25, and into the storage chamber 100 in the liquid tank 16. Simultaneously, air (gas) in the storage chamber 100 is pumped into the liquid storage bottle 20 through the other of the two fluid channels 24 and 25. The liquid in the liquid storage bottle 20 is replenished into the liquid tank 16 through this gas-liquid exchange. The liquid replenishment operation is complete when the user removes the liquid storage bottle 20 after replenishment is finished.

[0035] In this embodiment, as described above, the inner circumferential surface of the connecting channel 26 in the nozzle 22 is inclined inward toward the two fluid channels 24, 25. Therefore, when the liquid storage bottle 20 is tilted, almost no recess is formed in the nozzle 22 that would become a liquid storage section. Furthermore, as... Figure 6 As shown, when the nozzle 22 and adapter 30 are engaged and the liquid storage bottle 20 is held by the liquid tank 16, the lowermost region of the inner circumferential surface of the connecting channel 26 slopes downward toward the two fluid channels 24, 25. Therefore, even during the liquid replenishment operation described above, almost no recesses that would become liquid storage areas are formed inside the nozzle 22. Thus, when liquid is replenished from the liquid storage bottle 20 to the liquid tank 16, the liquid in the liquid storage bottle can be sprayed with almost no residue. Consequently, when the liquid storage bottle 20 is removed from the liquid tank 16 after the liquid replenishment operation is completed, dripping from the liquid storage bottle 20 and adhering to the user's hands and surroundings can be prevented.

[0036] Preferably, when the liquid storage bottle 20 is tilted, no recesses that would become liquid storage portions are formed between the nozzle 22 and the bottle body 21, or inside the nozzle 22. Therefore, as described above, it is preferable that the inner circumferential surface of the nozzle 22 and the inner circumferential surface of the bottle body 21 are continuous without steps; in other words, it is preferable that the opening diameter at the base end of the nozzle 22 and the opening diameter of the bottle body 21 are approximately the same. Furthermore, as shown in the figure, the inner circumferential surface of the bottle body 21 is preferably composed of a cylindrical inner circumferential surface and a truncated conical inner circumferential surface that are continuously connected to each other without steps. Therefore, it is also possible to suppress the formation of recesses that would become liquid storage portions when the liquid storage bottle 20 is tilted.

[0037] This configuration makes it easier for the liquid in the liquid storage bottle 20 to flow to the two fluid channels 24, 25, thereby improving the efficiency of replenishing the liquid in the liquid tank 16. From this point of view, the adapter 30 does not necessarily have to be set on the inclined surface 163 of the tank body 160. For example, it can be set on a surface parallel to the horizontal plane of the tank body 160, that is, on the upper surface 161.

[0038] In the aforementioned liquid replenishment operation, the flow path of the liquid in the liquid storage bottle 20 through one of the two fluid channels 24 and 25 is determined by gravity. That is, the liquid in the liquid storage bottle 20 tends to flow through the fluid channel 24 or 25 whose opening is lower on the connecting channel 26 side when the liquid storage bottle 20 is held by the liquid tank 16. However, in this embodiment, both the outer peripheral surface of the nozzle 22 and the inner peripheral surface of the adapter 30 are cylindrical, allowing the nozzle 22 to rotate relative to the adapter 30 even when they are engaged. Therefore, for example, when the nozzle 22 is positioned such that the two fluid channels 24 and 25 face each other in the horizontal direction, the gas-liquid exchange efficiency between the liquid tank 16 and the liquid storage bottle 20 is reduced, hindering smooth fluid replenishment.

[0039] Therefore, preferably, the nozzle 22 is inserted into the adapter 30 and then rotated relative to the adapter 30 to position the nozzle 22 in an optimal liquid replenishment posture that allows the two fluid channels 24, 25 to be vertically positioned relative to each other across the central axis C. This position ensures more reliable gas-liquid exchange between the liquid tank 16 and the liquid storage bottle 20, thereby achieving smooth liquid replenishment. To facilitate this positioning, user-visible positioning marks can be provided on both the outer circumferential surface of the nozzle 22 and the inner circumferential surface of the adapter 30. Although Figure 6 The first fluid channel 24 is shown to be positioned below the second fluid channel 25, but the opposite is also possible, that is, the second fluid channel 25 can be positioned below the first fluid channel 24.

[0040] Figures 7A to 7C These are plan views of the nozzle interior as seen from the base end side. Each plan view illustrates a variation of the communication channel according to this embodiment, and these views correspond to... Figure 5C .

[0041] In the above embodiments, the inner circumferential surface of the connecting channel 26 is connected to the inner circumferential surfaces of the two fluid channels 24 and 25 without steps. However, the shape of the inner circumferential surface of the connecting channel 26 is not limited to this, as long as it is inclined inward toward the two fluid channels 24 and 25. For example, as Figure 7A As shown, the inner circumferential surface of the connecting channel 26 can be a truncated cone shape with its inner diameter decreasing towards the two fluid channels 24 and 25. Furthermore, the inner circumferential surface of the connecting channel 26 can be a truncated cone shape where the upper and lower bases do not have similar shapes; such as... Figure 7B As shown, the upper base 26a can be elliptical and the lower base can be circular; or as shown... Figure 7C As shown, the upper base 26a can be an oblong shape and the lower base can be a circle.

[0042] However, in Figures 7A to 7CIn the variant shown, the inner circumferential surface of the connecting channel 26 is connected to the inner circumferential surfaces of the two fluid channels 24 and 25 via steps (step surfaces) 26a. Therefore, for example, if the two fluid channels 24 and 25 are positioned facing each other in the horizontal direction, a small recess that would become a liquid storage compartment is formed between the two fluid channels 24 and 25 and the connecting channel 26. Therefore, it is preferable that the inner circumferential surface of the connecting channel 26 is shaped like two conical shapes combined as described above, so that regardless of the orientation of the liquid storage bottle 20, almost no recesses that would become liquid storage compartments are formed inside the nozzle 22.

[0043] Second Embodiment

[0044] Figure 8A This is a cross-sectional view showing the main parts of a liquid storage bottle according to a second embodiment of the present disclosure. Figure 8B These are plan views of the nozzle interior according to this embodiment, viewed from the base end side, and they respectively correspond to... Figure 5B and Figure 5C . Figure 9 This is a cross-sectional view illustrating the liquid replenishment operation of the liquid replenishment system of this embodiment. In the following text, the same reference numerals will be used to denote structures identical to those in the first embodiment, and detailed descriptions will be omitted; however, structures different from those in the first embodiment will be described in detail.

[0045] The liquid storage bottle 20 in this embodiment differs from that in the first embodiment in the construction of the two fluid channels 24 and 25. Specifically, in the first embodiment, the cross-sectional areas of the two fluid channels 24 and 25 are the same, but in this embodiment, the cross-sectional area of ​​the first fluid channel 24 is larger than that of the second fluid channel 25. Although the distance from the central axis C of the nozzle 22 to the central axis of each of the two fluid channels 24 and 25 is the same in the first embodiment, in this embodiment, the distance d2 between the central axis C and the central axis of the second fluid channel 25 is greater than the distance d1 between the central axis C and the central axis of the first fluid channel 24.

[0046] Therefore, in this embodiment, a first fluid channel 24 with a large cross-sectional area is selected as the fluid channel through which the liquid in the liquid storage bottle 20 flows when replenishing the liquid. That is, the nozzle 22 is only fitted to the adapter 30 at a specific circumferential position, such that the two fluid channels 24, 25 are vertically opposite each other and the first fluid channel 24 is located below the second fluid channel 25. As a method for controlling the circumferential position of the nozzle 22, for example, a nozzle engagement portion (e.g., a protrusion) is formed on the outer circumferential surface of the nozzle 22, and an engagement portion (e.g., a recess) that can engage with the nozzle engagement portion is formed on the inner circumferential surface of the adapter 30.

[0047] Therefore, in the liquid replenishment operation of this embodiment, in addition to more easily draining the liquid from the liquid storage bottle 20 through the first fluid channel 24 with a large cross-sectional area, it is also easier to draw air into the liquid storage bottle 20 through the second fluid channel 25 located at a higher position. As a result, the gas-liquid exchange between the liquid tank 16 and the liquid storage bottle 20 is further enhanced, and the liquid can be replenished into the liquid tank 16 more efficiently. Furthermore, in this embodiment, since the nozzle 22 is only fitted to the adapter 30 in the optimal liquid replenishment posture, it is not necessary to rotate the nozzle 22 to adjust its circumferential position relative to the adapter 30 after inserting the nozzle 22 into the adapter 30. Therefore, the user can perform the liquid replenishment operation without touching the liquid storage bottle 20, thereby reducing the risk of the user's hands and surroundings being contaminated by liquid.

[0048] exist Figure 8A In the cross-sectional view shown, the inner circumferential surface of the connecting channel 26 has an inclination angle θ5 in the region continuous with the inner circumferential surface of the first fluid channel 24, which can be the same as the inclination angle θ6 in the region continuous with the inner circumferential surface of the second fluid channel 25. However, by making the former smaller than the latter, the flow of liquid in the liquid storage bottle 20 from the connecting channel 26 toward the first fluid channel 24 can be promoted under the aforementioned optimal liquid replenishment posture, thereby improving the efficiency of replenishing liquid to the liquid tank 16. In this regard, it is preferable that the inclination angle θ5 of the inner circumferential surface of the connecting channel 26 in the region continuous with the inner circumferential surface of the first fluid channel 24 is smaller than the inclination angle θ6 in the region continuous with the inner circumferential surface of the second fluid channel 25. In other words, in a section including the central axis of each of the two fluid channels 24, 25, the angle formed by the inner circumferential surface of the connecting channel 26 and the inner circumferential surface of the first fluid channel 24 is preferably smaller than the angle formed by the inner circumferential surface of the connecting channel 26 and the inner circumferential surface of the second fluid channel 25.

[0049] Figure 10A and Figure 10B These are plan views showing a variant example of the nozzle of this embodiment, and the nozzle is viewed from the top side.

[0050] In order to control the circumferential position of nozzle 22 relative to adapter 30, such as Figure 10A As shown, the outer peripheral surface of the nozzle 22 can be elliptical, and correspondingly, the inner peripheral surface of the adapter 30 can also be elliptical. In this case, two fluid channels 24 and 25 are formed in the nozzle 22 such that the plane including the central axis of each fluid channel is parallel to the direction of the major axis of the ellipse, and the adapter 30 is disposed in the inclined surface 163 such that the plane including the central axis of each fluid channel and the major axis of the ellipse is parallel to the vertical direction.

[0051] However, in this configuration, the nozzle 22 can also be fitted into the adapter 30 in an inverted relationship, with the first fluid channel 24 located below the second fluid channel 25 relative to the optimal fluid replenishment orientation. Therefore, as... Figure 10B As shown, preferably, a recessed engagement portion 28 is formed on the inner circumferential surface of the nozzle 22, and correspondingly, a protrusion that engages with the engagement portion 28 is formed on the outer circumferential surface of the adapter 30. Therefore, the nozzle 22 can be fitted into the adapter 30 in a suitable vertical position. Optionally, positioning marks can be provided on the outer circumferential surface of the nozzle 22 and the inner circumferential surface of the adapter 30, respectively, so that the user can visually identify the optimal liquid replenishment posture.

[0052] According to this disclosure, it is possible to pour out liquid while suppressing liquid residue in the contents.

[0053] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the appended claims should be given the broadest interpretation to cover all variations and equivalent structures and functions.

Claims

1. A liquid storage bottle for storing liquid to be replenished into a liquid tank, the liquid storage bottle comprising: Bottle body; and The nozzle is used to pour out the liquid stored in the bottle. The nozzle contains a first fluid channel, a second fluid channel, and a connecting channel. Each of the first and second fluid channels opens outwards from the tip of the nozzle and is parallel to each other. The connecting channel opens inwards from the base of the nozzle and communicates with the first and second fluid channels. The inner circumferential surface of the connecting channel is inclined inward toward the first fluid channel and the second fluid channel; The first fluid channel and the second fluid channel are formed at positions opposite to each other across the central axis of the nozzle; The cross-sectional area of ​​the first fluid channel is larger than that of the second fluid channel. In a cross-section including the central axis of the first fluid channel and the central axis of the second fluid channel, the angle formed by the inner circumferential surface of the connecting channel and the inner circumferential surface of the first fluid channel is smaller than the angle formed by the inner circumferential surface of the connecting channel and the inner circumferential surface of the second fluid channel.

2. The liquid storage bottle of claim 1, wherein, The inner circumferential surface of the connecting channel is continuously connected to the inner circumferential surface of the first fluid channel without any steps, and is also continuously connected to the inner circumferential surface of the second fluid channel without any steps.

3. The liquid storage bottle according to claim 1, wherein, The inner circumferential surface of the connecting channel forms a truncated cone shape and is connected to the inner circumferential surface of the first fluid channel via a step, and is also connected to the inner circumferential surface of the second fluid channel via a step.

4. The liquid storage bottle of claim 1, wherein, The distance from the central axis of the nozzle to the central axis of the second fluid channel is greater than the distance from the central axis of the nozzle to the central axis of the first fluid channel.

5. The liquid storage bottle of claim 1, wherein, The inner circumferential surface of the bottle is continuously connected to the inner circumferential surface of the connecting channel without any steps.

6. The liquid storage bottle of claim 5, wherein, The inner circumferential surface of the bottle includes a cylindrical inner circumferential surface and a truncated conical inner circumferential surface that is continuously connected to the cylindrical inner circumferential surface without steps.

7. A fluid replenishment system, comprising: Liquid tank; and The liquid storage bottle according to claim 1 is used to store liquid to be replenished into a liquid tank.

8. The liquid replenishment system of claim 7, wherein, The liquid tank has a tank body and an adapter. The adapter is disposed on an inclined surface that connects the upper surface and the side surface of the tank body, protrudes cylindrically from the periphery of the inlet for injecting liquid, and has an inner circumferential surface that can mate with the outer circumferential surface of the nozzle. When the nozzle and adapter engage with each other, the area at the lowest point of the inner circumferential surface of the connecting channel slopes downward toward the first fluid channel and the second fluid channel.

9. The liquid replenishment system of claim 8, wherein, The angle of inclination of the inner circumferential surface of the connecting channel relative to the horizontal plane of the region is greater than the angle of inclination of the inclined surface relative to the horizontal plane.

10. The liquid replenishment system of claim 8, wherein, The inner circumferential surface of the adapter is elliptical cylindrical, and the outer circumferential surface of the nozzle is also elliptical cylindrical. The adapter is configured on the inclined surface such that a plane including the adapter's central axis and the major axis of the elliptical cylindrical ellipse is parallel to the vertical direction, and the first fluid channel and the second fluid channel are formed on the nozzle such that a plane including the central axis of the first fluid channel and the central axis of the second fluid channel is parallel to the direction of the major axis of the ellipse.

11. The liquid replenishment system of claim 8, wherein, A first engagement portion is formed on the outer peripheral surface of the nozzle, and a second engagement portion capable of engaging with the first engagement portion is formed on the inner peripheral surface of the adapter.

12. The liquid replenishment system of claim 8, wherein, Positioning marks are provided on both the outer circumferential surface of the nozzle and the inner circumferential surface of the adapter to position the nozzle relative to the adapter.

13. The liquid replenishment system of claim 7, wherein, The liquid tank is housed within the liquid injection device.

Images