Atomization device

Abstract

The invention provides an atomization device, and relates to the technical field of aerosol generation, and the atomization device comprises a main body part, a liquid storage assembly and a pressing part. The first end of the abutting piece is detachably connected with the oil inlet pipe in the atomization assembly, and the second end of the abutting piece is used for pressing the oil injection piston in the liquid storage assembly, so that rapid oil injection is achieved. When a user uses the atomization device for the first time, oil can be rapidly injected to moisten a core through the abutting piece, the problem of core pasting of the aerosol generation assembly is avoided or reduced, after the user uses and exhausts the atomization matrix in the liquid storage assembly, the liquid storage assembly can be replaced, and other liquid storage assemblies without rapid oil injection can be selected for use; on the premise that the requirements of related laws and regulations are met, the use cost of a user is reduced, and the problem that in the related technology, the use cost of an atomization device is high is solved.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, specifically to atomizing devices. Background Technology

[0002] In related designs, atomizing devices generally adopt an integrated design, which provides great convenience for users in daily use. Atomizing devices typically include a battery assembly, a liquid storage assembly, and an atomizing assembly, all of which are compactly integrated into a single device, making them easy for users to carry and use.

[0003] To achieve high-capacity suction and avoid waste, related technologies propose using an additional large-capacity liquid storage component to supply liquid to the atomizing component. However, due to regulatory requirements, the atomizing component in such atomizing devices cannot be pre-filled with atomizing matrix before user use. When the atomizing device is initially installed with the liquid storage component and atomization is performed, dry burning can easily occur because the atomizing component is not wetted in time. Related technologies have designed liquid storage components that can quickly lubricate the wick to solve the above problem. However, this brings another problem: during subsequent use of the atomizing device, when replacing the liquid storage component, since the oil-guiding cotton in the atomizing component has already absorbed the atomizing matrix, there is no need to lubricate the wick again. If a liquid storage component that can quickly lubricate the wick is always used, it can easily lead to excessively high operating costs for the oil bottle assembly and easy overflow of the atomizing matrix. Summary of the Invention

[0004] The purpose of this application is to provide an atomizing device that addresses the problem of high operating costs of current atomizing devices.

[0005] This application provides an atomizing device, including: a main body, a liquid storage assembly, and a pressure member. The main body is provided with an atomizing assembly and a liquid inlet pipe, the liquid inlet pipe being used to guide atomizing matrix outside the main body to the atomizing assembly. The liquid storage assembly is detachably connected to the main body, and the liquid storage assembly includes: a bottle for storing atomizing matrix and an oil injection piston located in the bottle, the oil injection piston being used to squeeze the atomizing matrix in the bottle so that it flows to the atomizing assembly through the liquid inlet pipe. The pressure member has a first end and a second end opposite to each other, the first end being detachably connected to one end of the liquid inlet pipe, and the second end being used to press against the oil injection piston when the main body is connected to the bottle, and when the bottle is disconnected from the main body, the first end separating from one end of the liquid inlet pipe.

[0006] In one embodiment, the end of the liquid inlet tube connected to the pressure member is a connecting end, the pressure member is inserted into the connecting end, and the pressure member has a first snap-fit ​​structure for snapping into the bottle body. The first snap-fit ​​structure is used to separate the pressure member from the connecting end under the action of the bottle body when the liquid storage component is removed from the atomizing component.

[0007] In one embodiment, the first snap-fit ​​structure is a limiting protrusion that protrudes from the surface of the pressing member.

[0008] In one embodiment, the pressing member is a cylindrical or sheet-like structure, and the second end has an axially extending radially contracting region, the outer diameter of which gradually decreases in the direction from the first end to the second end.

[0009] In one embodiment, the pressing member is a cylindrical structure, and the second end has an insertion area and a deformation area distributed circumferentially, with a deformation gap between the insertion area and the deformation area.

[0010] In one embodiment, the end of the liquid inlet tube connected to the pressure member is a connecting end, the pressure member is inserted into the connecting end, and the pressure member has a first snap-fit ​​structure for snapping into the bottle body. The first snap-fit ​​structure is used to separate the pressure member from the first end under the action of the bottle body when the liquid storage component is removed from the atomizing component. The first snap-fit ​​structure is disposed in the deformation area.

[0011] In one embodiment, the bottle body has a second snap-fit ​​structure that engages with the first snap-fit ​​structure to confine the pressing member within the bottle body.

[0012] In one embodiment, the inner wall of the bottle is provided with a guide groove, which is used to guide the first snap-fit ​​structure to move to cooperate with the second snap-fit ​​structure. The guide groove is inclined inward in the direction from the bottle mouth to the bottle body.

[0013] In one embodiment, the bottle body has a connecting cavity and a matrix cavity, the matrix cavity being used to store the atomizing matrix, and the oil injection piston includes:

[0014] A first piston, movably disposed within the matrix cavity, is provided with a liquid passage hole; and

[0015] The second piston is movably disposed in the connecting cavity, passes through the liquid passage, and selectively opens or closes the liquid passage.

[0016] The bottle is configured such that when the pressing member is inserted into the bottle, it pushes the first piston to move into the bottle and drives the second piston to move into the bottle, while simultaneously opening the liquid passage to squeeze the atomizing matrix inside the bottle. The second snap-fit ​​structure can cooperate with the first snap-fit ​​structure to fix the pressing member inside the bottle.

[0017] This application also provides an atomizing device, including: a main body, a first liquid storage component, a pressure member, and a second liquid storage component. The main body is provided with an atomizing component and an inlet pipe, the inlet pipe being used to guide atomizing matrix outside the main body to the atomizing component. The first liquid storage component is detachably connected to the main body, and includes: a first bottle for storing atomizing matrix and an oil-filling piston located within the first bottle, the oil-filling piston being used to compress the atomizing matrix within the first bottle so that it flows through the inlet pipe to the atomizing component. The pressure member has opposing first and second ends, the first end being detachably connected to one end of the inlet pipe, and the second end being used to press against the oil-filling piston within the liquid storage component when the main body is connected to the bottle, and separating from one end of the inlet pipe when the first bottle is disconnected from the main body. The second liquid storage component includes a second bottle for storing atomizing matrix. After the connection between the second liquid storage component and the first bottle is disconnected from the main body, the second liquid storage component is detachably connected to the main body, so that the atomizing matrix in the second bottle flows to the atomizing component in the main body through the liquid inlet pipe.

[0018] According to the atomizing device in the above embodiments, rapid oil filling is achieved by detachably connecting the first end of the pressure member to the oil inlet pipe in the atomizing assembly, and by using the oil filling piston in the low-pressure reservoir assembly at the second end of the pressure member. When the user uses the atomizing device for the first time, the pressure member can be used to quickly fill and lubricate the coil, avoiding or reducing the problem of coil clogging in the aerosol generation component. When the user uses up the atomizing matrix in the reservoir assembly, the reservoir assembly can be replaced, and other reservoir assemblies that do not have rapid oil filling can be selected for use. Under the premise of meeting the requirements of relevant regulations, the user's operating costs are reduced, solving the problem of high operating costs of atomizing devices in related technologies. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an atomizing device provided in an embodiment of this application.

[0020] Figure 2 This is a cross-sectional view of an atomizing device provided in an embodiment of this application.

[0021] Figure 3This is a schematic diagram of the structure of a pressure member in an atomizing device provided in an embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the assembly of a pressure member and a liquid inlet pipe in an atomizing device provided in an embodiment of this application.

[0023] Figure 5 This is a cross-sectional view of a pressure member and an inlet pipe assembly in an atomizing device provided in an embodiment of this application.

[0024] Figure 6 This is a schematic diagram of another pressure component in an atomizing device provided in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the assembly of another pressure member and liquid inlet pipe in an atomizing device provided in an embodiment of this application.

[0026] Figure 8 This is a cross-sectional view of another pressure member and liquid inlet pipe assembly in an atomizing device provided in an embodiment of this application.

[0027] Figure 9 This is a cross-sectional view of an oil outlet component in an atomizing device provided in an embodiment of this application.

[0028] in:

[0029] 1. Atomizing device; 10. Main body; 110. Atomizing component; 120. Liquid inlet pipe; 121. Mounting notch; 20. Liquid storage component; 210. Bottle body; 211. Second snap-fit ​​structure; 212. Guide groove; 213. Connecting cavity; 214. Matrix cavity; 220. Oil injection piston; 221. First piston; 222. Second piston; 30. Pressing member; 310. First end; 320. Second end; 330. First snap-fit ​​structure; 340. Radial contraction area; 350. Insertion area; 360. Deformation area; 370. Deformation gap; 380. Locking block. Detailed Implementation

[0030] The present application will be further described in detail below with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0031] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary composition and / or order.

[0032] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0033] Please also refer to Figures 1-2 This application provides an atomizing device 1, which includes a main body 10, a liquid storage component 20, and a pressure member 30.

[0034] The main body 10 is provided with an atomizing component 110 and a liquid inlet pipe 120. The liquid inlet pipe 120 is used to guide the atomizing matrix outside the main body 10 to the atomizing component 110. For example, the atomizing matrix in the liquid storage component 20 located outside the main body 10 can be guided to the atomizing component 110. The embodiments of this application do not limit the specific form and structure of the atomizing component 110. For example, it can be an atomizing core using a planar ceramic or a heating mesh type. The specific structure and form of the liquid inlet pipe 120 are also not limited. It can be selected according to the actual situation.

[0035] The liquid storage assembly 20 is detachably connected to the main body 10. When the atomizing matrix in the liquid storage assembly 20 is depleted, the atomizing matrix can be replenished by replacing the atomizing assembly 110. In this embodiment, the liquid storage assembly 20 may include: a bottle 210 for storing the atomizing matrix and an oil injection piston 220 located inside the bottle 210. The oil injection piston 220 is used to squeeze the atomizing matrix inside the bottle 210 and make it flow to the atomizing assembly 110 through the liquid inlet pipe 120.

[0036] Please also refer to Figures 3-8 In one embodiment, the pressing member 30 has a first end 310 and a second end 320 opposite to each other. The first end 310 is detachably connected to one end of the liquid inlet pipe 120, and the second end 320 is used to press against the oil injection piston 220 in the liquid storage assembly 20 when the main body 10 is connected to the bottle body 210, and the first end 310 is separated from one end of the liquid inlet pipe 120 when the bottle body 210 is disconnected from the main body 10.

[0037] For ease of explanation, the end where the liquid inlet pipe 120 is connected to the pressure member 30 will be referred to as the connection end. The pressure member 30 is inserted into the connection end, and the pressure member 30 has a first snap-fit ​​structure 330 for snapping into the bottle body 210. The first snap-fit ​​structure 330 is used to separate the pressure member 30 from the connection end under the action of the bottle body 210 when the liquid storage component 20 is removed from the atomizing component 110. This application does not limit the specific form of the first snap-fit ​​structure 330. For example, in one embodiment, the first snap-fit ​​structure 330 is a limiting protrusion, and the first snap-fit ​​structure 330 protrudes from the surface of the pressing member 30. It can be understood that in this embodiment, the first snap-fit ​​structure 330 can be made of an elastic material. When the first snap-fit ​​structure 330 extends into the bottle body 210, the first snap-fit ​​structure 330 can undergo elastic deformation, thereby forming an interference fit with the inner wall of the bottle body 210. This enables the first snap-fit ​​structure 330 to separate the pressing member 30 from the connecting end under the action of the bottle body 210 when the liquid storage component 20 is removed from the atomizing component 110.

[0038] For further information, please refer to the following: Figure 4 and Figure 7 In one embodiment, the inlet pipe 120 may also be provided with an installation notch 121, which may be located at the connection end and extend axially. A locking block 380 may be provided at the first end 310 of the pressing member 30, which may be locked into the installation notch 121 and press-fitted with the installation notch 121 to realize a detachable connection between the inlet pipe 120 and the pressing member 30.

[0039] Furthermore, this application does not limit the specific form and structure of the pressing member 30; it can be configured according to actual circumstances. For example, in one embodiment, please refer to... Figure 3 The pressing member 30 can be configured as a sheet structure, or, for example, in another embodiment, see [reference needed]. Figure 6 The pressure member 30 can be configured as a cylindrical structure.

[0040] The following description uses a cylindrical structure as an example of the pressing member 30. In this embodiment, the second end 320 of the pressing member 30 has an axially extending radially contracting region 340. In the direction from the first end 310 to the second end 320, the outer diameter of the radially contracting region 340 gradually decreases. That is to say, in this embodiment, the radially contracting region 340 can serve as a guide structure to guide the second end 320 of the pressing member 30 into the bottle body 210.

[0041] Furthermore, in some embodiments, the second end 320 of the pressing member 30 may also have an axially distributed insertion region 350 and a deformation region 360, with a deformation gap 370 between the insertion region 350 and the deformation region 360. It is understood that in this embodiment, the outer diameter of the pressing member 30 may be set slightly larger than the inner diameter of the bottle body 210. When the second end 320 of the pressing member 30 extends into the bottle body 210, the second end 320 of the pressing member 30 will be deformed by the inner wall of the bottle body 210. At this time, the deformation region 360 can deform and move towards the deformation gap 370, thereby facilitating a smoother insertion of the pressing member 30 into the bottle body 210 and ensuring a tight connection between the pressing member 30 and the bottle body 210 when it is inside the bottle body 210.

[0042] In one embodiment, the first snap-fit ​​structure 330 can be disposed in the deformation region 360. In this embodiment, the first snap-fit ​​structure 330 can be made of a rigid material, that is, the first snap-fit ​​structure 330 is difficult to deform under the influence of external force. This can help improve the structural strength of the first snap-fit ​​structure 330, thereby ensuring that the first snap-fit ​​structure 330 can maintain a relatively stable connection with the bottle body 210 after it is inserted into the bottle body 210. This allows the first snap-fit ​​structure 330 to separate the pressing member 30 from the connecting end under the action of the bottle body 210 when the liquid storage component 20 is removed from the atomizing component 110.

[0043] As mentioned above, the embodiments of this application do not limit the specific structure of the bottle 210. Please refer to [link / reference needed]. Figure 9 For example, in one embodiment, the bottle body 210 may have a second snap-fit ​​structure 211 that engages with the first snap-fit ​​structure 330. The second snap-fit ​​structure 211 is used to engage with the first snap-fit ​​structure 330 to confine the pressing member 30 within the bottle body 210.

[0044] This application embodiment does not limit the specific form of the second snap-fit ​​structure 211. For example, in one embodiment, the second snap-fit ​​structure 211 can be a groove formed on the inner wall of the bottle body 210. When the first snap-fit ​​structure 330 is snapped into the groove, the limiting between the pressing member 30 and the bottle body 210 can be achieved.

[0045] In another embodiment, the bottle body 210 may include a bottleneck and a body. In the axial direction of the bottle body 210, the cross-sectional dimension of the bottleneck is smaller than that of the body, and the inner diameter of the bottleneck is smaller than that of the body. Inside the bottle body 210, the junction between the bottleneck and the body can serve as a second snap-fit ​​structure 211. When the first snap-fit ​​structure 330 extends into the bottleneck, it can be deformed under pressure. When the first snap-fit ​​structure 330 extends into the body, it can recover its elastic deformation, thereby snapping with the second snap-fit ​​structure 211. This allows the first snap-fit ​​structure 330 to separate the pressure member 30 from the connecting end under the action of the bottle body 210 when the liquid storage component 20 is removed from the atomizing component 110.

[0046] For example, the bottle body 210 provided in this application embodiment may form a connecting cavity 213 and a matrix cavity 214 inside. The connecting cavity 213 is located at the bottleneck of the bottle body 210, and the matrix cavity 214 is located at the body of the bottle body 210. The matrix cavity 214 is used to store the atomized matrix. The oil injection piston 220 may include a first piston 221 and a second piston 222.

[0047] The first piston 221 is movably disposed in the matrix cavity 214 and is provided with a liquid passage hole (not shown in the figure) for the atomizing matrix to pass through and enter the atomizing assembly 110 via the connecting cavity 213. The second piston 222 is movably disposed in the connecting cavity 213 and passes through the liquid passage hole, and is used to selectively open or close the liquid passage hole.

[0048] In this embodiment, the bottle body 210 is configured such that when the pressing member 30 is inserted into the bottle body 210, it pushes the first piston 221 to move into the bottle body 210 and drives the second piston 222 to move into the bottle body 210, while opening the liquid passage hole to compress the atomizing matrix located in the bottle body 210. The second snap-fit ​​structure 211 can cooperate with the first snap-fit ​​structure 330 to fix the pressing member 30 in the bottle body 210.

[0049] Furthermore, in one embodiment, the inner wall of the bottle body 210 may also be provided with a guide groove 212. Specifically, the guide groove 212 may be provided on the inner wall of the bottle neck. The guide groove 212 may be used to guide the first snap-fit ​​structure 330 to move to cooperate with the second snap-fit ​​structure 211. From the bottle mouth of the bottle body 210 to the bottle body of the bottle body 210, the guide groove 212 is inclined inward. That is to say, in this embodiment, as the first snap-fit ​​structure 330 gradually extends into the bottle body 210, the depth of the guide groove 212 gradually decreases, so as to play a role in pre-fixing the first snap-fit ​​structure 330, thereby limiting the first snap-fit ​​structure 330 in the circumferential direction and preventing the first snap-fit ​​structure 330 from rotating when it extends into the bottle body 210.

[0050] In addition, this application embodiment also provides another atomizing device (not shown in the figure), which may include: a main body, a first liquid storage component, a pressing member, and a second liquid storage component. The main body and the pressing member can be referred to the corresponding components in the previous embodiment, and the first liquid storage component in this application embodiment can be referred to the liquid storage component in the previous embodiment. This application will not elaborate on the above three components.

[0051] The second liquid storage component may include a second bottle for storing atomizing matrix. After the main body is disconnected from the first bottle, the second liquid storage component can be detachably connected to the main body so that the atomizing matrix in the second bottle flows to the atomizing component in the main body through the liquid inlet pipe.

[0052] The working principle of the atomizing device 1 provided in the embodiments of this application is as follows:

[0053] When the atomizing device 1 is in its initial state (unused state), the pressure member 30 is connected to the connection end of the liquid inlet pipe 120. At this time, the first liquid storage component 20 can be connected to the pressure member 30 and the first liquid storage component 20 can be assembled on the main body of the atomizing device 1. During this process, the pressure member 30 can push the first piston 221 to realize the rapid oil filling of the atomizing component 110 by the first liquid storage component 20. When the atomizing matrix in the first liquid storage component 20 is exhausted, the first liquid storage component 20 can be removed from the main body 10 and the second liquid storage component 20 can be replaced. Since the atomizing device 1 has been used at this time, it is not necessary to quickly fill the atomizing component 110 with oil and lubricate the core. Therefore, the second liquid storage component 20 can only contain the atomizing matrix.

[0054] In summary, the atomizing device 1 provided in this application embodiment achieves rapid oil filling by detachably connecting the first end 310 of the pressure member 30 to the oil inlet pipe in the atomizing assembly 110, and by using the second end 320 of the pressure member 30 to lower the oil injection piston 220 in the low-pressure liquid storage assembly 20. When the user uses the atomizing device 1 for the first time, the pressure member 30 can be used to quickly fill the coil with oil, avoiding or reducing the problem of aerosol generation and coil clogging. When the user uses and depletes the atomizing matrix in the liquid storage assembly 20, the liquid storage assembly 20 can be replaced, and other liquid storage assemblies 20 that do not have rapid oil filling can be selected for use. Under the premise of meeting the requirements of relevant regulations, the user's usage cost is reduced, solving the problem of high usage cost of the atomizing device 1 in related technologies.

[0055] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. An atomising device characterised in that, The application relates to an atomizer, which comprises a main body provided with an atomizing assembly and a liquid inlet pipe for guiding atomizing substrate outside the main body to the atomizing assembly; a liquid storage assembly detachably connected with the main body, which comprises a bottle body for storing atomizing substrate and an oil injection piston in the bottle body for extruding atomizing substrate in the bottle body to flow to the atomizing assembly through the liquid inlet pipe; and a pressing member having opposite first and second end portions, the first end portion being detachably connected with one end of the liquid inlet pipe, and the second end portion being used for pressing the oil injection piston when the main body is connected with the bottle body, and the first end portion being separated from the one end of the liquid inlet pipe when the bottle body is disconnected with the main body. The one end of the liquid inlet pipe connected with the pressing member is a connecting end, the pressing member is inserted into the connecting end, the pressing member has a first clamping structure for clamping the bottle body, and the first clamping structure is used for separating the pressing member from the connecting end under the clamping of the bottle body when the liquid storage assembly is removed from the atomizing assembly. The first clamping structure is a limiting protrusion which protrudes from the surface of the pressing member. The pressing member is in a cylindrical structure or a sheet structure, the second end portion has an axially extending radial contraction area, and the outer diameter of the radial contraction area gradually decreases in the direction in which the first end portion points to the second end portion. The pressing member is in a cylindrical structure, the second end portion has an insertion area and a deformation area which are distributed along the circumference, and the insertion area and the deformation area have a deformation gap therebetween.

2. The atomization device of claim 1, wherein, The first clamping structure is arranged on the deformation area.

3. The atomization device of claim 2, wherein, The bottle body has a second clamping structure matched with the first clamping structure in the bottle body, and the second clamping structure is used for matching with the first clamping structure to limit the pressing member in the bottle body.

4. The atomization device of claim 1, wherein, The inner wall of the bottle body is provided with a guide groove for guiding the first clamping structure to move to match with the second clamping structure, and the guide groove is arranged to be inclined inward in the direction from the bottle mouth of the bottle body to the bottle body.

5. The atomization device of claim 2, wherein, The bottle body is formed with a connecting cavity and a substrate cavity for storing atomizing substrate, the oil injection piston comprises a first piston movably arranged in the substrate cavity and provided with a liquid passage, and a second piston movably arranged in the connecting cavity and penetrating through the liquid passage and selectively opening or closing the liquid passage.

6. The atomizing device of claim 5, wherein The bottle body is arranged to push the first piston to move into the bottle body and drive the second piston to move into the bottle body when the pressing member is inserted into the bottle body, and the second piston opens the liquid passage to extrude the atomizing substrate in the bottle body, and the second clamping structure can match with the first clamping structure to fix the pressing member in the bottle body.

7. The atomizing device of claim 6, wherein The application relates to an atomizer, which comprises a main body provided with an atomizing assembly and a liquid inlet pipe for guiding atomizing substrate outside the main body to the atomizing assembly; 8. The atomizing device of claim 7, wherein, ​ 9. The atomization device of claim 7, wherein, ​ ​ ​ ​ 10. An atomising device characterised in that, ​ ​ a first liquid storage assembly detachably connected to the main body, the first liquid storage assembly comprising a first bottle storing an atomization base and an oil injection piston in the first bottle, the oil injection piston being used to extrude the atomization base in the first bottle to flow to the atomization assembly through the liquid inlet pipe; a pressing member having opposite first and second ends, the first end being detachably connected to one end of the liquid inlet pipe, the second end being used to press the oil injection piston in the liquid storage assembly when the main body is connected to the bottle, and the first end being separated from one end of the liquid inlet pipe when the first bottle is disconnected from the main body; and a second liquid storage assembly comprising a second bottle storing an atomization base, the second liquid storage assembly being detachably connected to the main body after the main body is disconnected from the first bottle, so that the atomization base in the second bottle flows to the atomization assembly in the main body through the liquid inlet pipe.

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