Liquid accumulator and rotary compressor

Abstract

The invention provides a liquid accumulator and a rotary compressor, and relates to the technical field of compressors. The liquid storage device comprises a liquid storage device body, a second pipeline and an elastic assembly, the liquid storage device body is used for being connected with a shell of the compressor, a first pipeline is arranged in the liquid storage device body, and the first pipeline extends to the bottom of the liquid storage device body; one end of the second pipeline extends into the first pipeline, and the other end of the second pipeline is used for being connected with a shell of the compressor; the elastic assembly is arranged between the first pipeline and the second pipeline and used for restraining vibration transmission, and the liquid accumulator can effectively improve vibration response and reduce noise radiation.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a liquid storage device and a rotary compressor. Background Art

[0002] The liquid receiver is an important component of the rotary compressor. It has a large sound radiation area and is also one of the main sound sources. The mechanism of noise generation and transmission of the liquid receiver is very complex. Both the structure and cavity modes may be excited by many sources such as structural vibration, aerodynamic noise, pressure pulsation, etc. In addition, coupled resonance may occur between the structure and cavity modes, radiating noise.

[0003] A copper tube is welded at the bottom of the existing liquid reservoir, and the copper tube is welded to the air flow duct of the compressor housing. This connection method causes the excitation vibration source of the compressor to be directly transmitted to the liquid reservoir through the rigid connection of the copper tube, causing the liquid reservoir structure to resonate and radiate noise. Summary of the invention

[0004] The objects of the present application include, for example, providing a liquid reservoir that can effectively improve vibration response and reduce noise radiation.

[0005] The purpose of the present application also includes providing a rotary compressor that can effectively improve the vibration response of the liquid storage device and reduce noise radiation.

[0006] The embodiments of the present application can be implemented as follows:

[0007] An embodiment of the present application provides a liquid reservoir, comprising:

[0008] A liquid reservoir body, the liquid reservoir body is used to be connected to a housing of a compressor, a first pipe is provided inside the liquid reservoir body, and the first pipe extends to the bottom of the liquid reservoir body;

[0009] a second pipe, one end of the second pipe extending into the first pipe, and the other end of the second pipe being connected to a casing of the compressor;

[0010] An elastic component is disposed between the first pipe and the second pipe and is used to suppress vibration transmission.

[0011] Optionally, the elastic component includes an elastic retaining spring, which is sleeved on the second pipe and abuts against the inner wall of the first pipe.

[0012] Optionally, the elastic retaining spring includes an annular retaining spring body and a plurality of elastic protrusions circumferentially spaced along the retaining spring body, the retaining spring body is sleeved on the second pipe, and the plurality of elastic protrusions are all protruded toward the inner wall of the first pipe and are all in contact with the inner wall of the first pipe.

[0013] Optionally, each of the elastic protrusions includes a plurality of continuous protrusions along the axial direction of the retaining spring body, and the plurality of protrusions are all protruded toward the inner wall of the first pipe and are in contact with the inner wall of the first pipe.

[0014] Optionally, the elastic component also includes a first sealing portion and a second sealing portion, the first sealing portion and the second sealing portion are both arranged between the first pipe and the second pipe, and the two ends of the elastic retaining ring along the axial direction of the first pipe are respectively abutted against the first sealing portion and the second sealing portion.

[0015] Optionally, the first sealing portion and the second sealing portion are both annular, a first annular groove and a second annular groove are provided on the first pipe, the first sealing portion is snap-fitted with the first annular groove, and the second sealing portion is snap-fitted with the second annular groove.

[0016] Optionally, two first convex rings and two second convex rings are protruded from the first pipe, and both the first convex rings and the second convex rings are protruded toward the second pipe, and the first annular groove is formed between the two first convex rings, and the second annular groove is formed between the two second convex rings.

[0017] Optionally, the elastic retaining spring satisfies: 0.1≤(H 1 -H 2 ) / H 1 ≤0.3, where H 1 H is the maximum distance between the surface of the elastic protrusion away from the second pipe during deformation and the outer wall of the second pipe, 2 It is the minimum distance between the surface of the elastic protrusion that faces away from the second pipe during the deformation process and the outer wall of the second pipe.

[0018] Optionally, the wall thickness of the elastic retaining spring is less than or equal to 2 mm.

[0019] The present application also provides a rotary compressor, comprising a shell and the liquid reservoir, wherein the liquid reservoir body and the second pipeline are both connected to the shell.

[0020] The beneficial effects of the liquid reservoir and rotary compressor provided by the embodiments of the present application include, for example: in order to effectively improve the vibration response and reduce noise radiation, a liquid reservoir is designed, which includes a liquid reservoir body, a second pipe and an elastic component for suppressing vibration transmission, the liquid reservoir body is used to connect with the shell of the compressor, a first pipe is arranged inside the liquid reservoir body, and the first pipe extends to the bottom of the liquid reservoir body; one end of the second pipe extends into the first pipe, and the other end of the second pipe is used to connect with the shell of the compressor; the elastic component is arranged between the first pipe and the second pipe. When the excitation vibration source of the compressor transmits the vibration to the second pipe through the shell, since the elastic component is arranged between the first pipe and the second pipe, the elastic component can suppress the vibration generated by the compressor from being transmitted to the liquid reservoir body, thereby effectively improving the vibration response of the liquid reservoir and reducing noise radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of the liquid reservoir in the embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of a partial structure of a liquid reservoir in an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the first elastic retaining spring in the embodiment of the present application;

[0025] Figure 4 A schematic diagram of a second elastic retaining spring in an embodiment of the present application;

[0026] Figure 5 It is a schematic diagram for showing the deformation amount of the elastic retaining spring in the embodiment of the present application.

[0027] Icon: 100 - liquid reservoir body; 110 - first pipeline; 111 - first annular groove; 112 - second annular groove; 113 - first convex ring; 114 - second convex ring; 200 - second pipeline; 210 - first pipe section; 220 - curved section; 230 - second pipe section; 300 - elastic component; 310 - elastic retaining spring; 311 - retaining spring body; 312 - elastic protrusion; 3121 - protrusion; 320 - first sealing part; 330 - second sealing part. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.

[0034] As disclosed in the background technology, a copper tube is welded to the bottom of the existing liquid reservoir, and the copper tube is welded to the airflow duct of the compressor housing. Under the connection mode between the liquid reservoir and the compressor housing, the excitation vibration source of the compressor will directly transmit the vibration to the liquid reservoir through the rigid connection of the copper tube, so that the liquid reservoir structure resonates and radiates noise. The embodiment of the present application provides a liquid reservoir, which can at least solve the above technical problems.

[0035] Please refer to Figure 1 , Figure 2The liquid reservoir provided in the embodiment of the present application includes a liquid reservoir body 100 for connecting to the housing of the compressor, a first pipe 110 is arranged inside the liquid reservoir body 100, and the first pipe 110 extends to the bottom of the liquid reservoir body 100; the liquid reservoir also includes a second pipe 200, one end of the second pipe 200 extends into the first pipe 110, and the other end of the second pipe 200 is used to be connected to the housing of the compressor; the liquid reservoir also includes an elastic component 300, which is arranged between the first pipe 110 and the second pipe 200 to suppress vibration transmission.

[0036] The first pipe 110 extends along the height direction of the liquid reservoir body 100, and the bottom end of the first pipe 110 extends to the bottom of the liquid reservoir body 100; the second pipe 200 includes a first pipe section 210 extending along the height direction of the liquid reservoir body 100, a curved section 220 and a second pipe section 230 perpendicular to the first pipe section 210, the first pipe section 210, the curved section 220 and the second pipe section 230 are arranged in sequence and integrally formed, the first pipe section 210 extends from the bottom end of the first pipe 110 to the inside of the first pipe 110, the second pipe section 230 is used to be connected to the casing of the compressor, and the elastic component 300 is arranged between the first pipe section 210 of the first pipe 110 and the second pipe section 200.

[0037] When the second pipe section 230 of the second pipe 200 is connected to the shell of the compressor, the excitation vibration source of the compressor transmits the vibration to the second pipe 200 through the shell. Since an elastic component 300 is provided between the first pipe 110 and the first pipe section 210 of the second pipe 200, the elastic component 300 can suppress the vibration generated by the compressor from being transmitted to the liquid reservoir body 100, thereby effectively improving the vibration response of the liquid reservoir and reducing noise radiation.

[0038] In this embodiment, the elastic component 300 includes an elastic retaining spring 310 . The elastic retaining spring 310 is sleeved on the second pipe 200 , and the elastic retaining spring 310 abuts against the inner wall of the first pipe 110 .

[0039] It should be noted that when the excitation vibration source of the compressor transmits the vibration to the second pipe 200 through the shell, the second pipe 200 will be displaced relative to the first pipe 110 along the radial direction of the first pipe 110, thereby squeezing the elastic retaining spring 310, causing the elastic retaining spring 310 to deform. During the deformation process, the elastic retaining spring 310 can suppress the vibration generated by the compressor from being transmitted to the liquid reservoir body 100.

[0040] In other embodiments, the elastic component 300 may further include a plurality of springs, and the springs are disposed between the first pipe 110 and the second pipe 200 , which can also play a role in suppressing vibration transmission to a certain extent.

[0041] Please refer to Figure 3 In this embodiment, the elastic retaining spring 310 includes an annular retaining spring body 311 and a plurality of elastic protrusions 312 circumferentially spaced along the retaining spring body 311. The retaining spring body 311 is sleeved on the second pipe 200. The plurality of elastic protrusions 312 are all protruded toward the inner wall of the first pipe 110 and are all in contact with the inner wall of the first pipe 110. The retaining spring body 311 and the plurality of elastic protrusions 312 can be integrally formed.

[0042] The retaining spring body 311 is sleeved on the first pipe section 210 of the second pipe 200, and multiple elastic protrusions 312 are evenly spaced along the circumference of the retaining spring body 311. The angles between any two adjacent elastic protrusions 312 and the center line of the retaining spring body 311 are equal. For example, if the number of elastic protrusions 312 is four, the angle between any two adjacent elastic protrusions 312 and the center line of the retaining spring body 311 is 90°; if the number of elastic protrusions 312 is six, the angle between any two adjacent elastic protrusions 312 and the center line of the retaining spring body 311 is 60°; if the number of elastic protrusions 312 is eight, the angle between any two adjacent elastic protrusions 312 and the center line of the retaining spring body 311 is 45°.

[0043] It is understandable that the number of the elastic protrusions 312 may be determined according to actual needs and is not limited thereto.

[0044] When the excitation vibration source of the compressor transmits the vibration to the second pipe 200 through the shell, causing the second pipe 200 to be displaced relative to the first pipe 110 along the radial direction of the first pipe 110, part of the elastic protrusion 312 will be squeezed between the first pipe section 210 of the second pipe 200 and the inner wall of the first pipe 110, causing the elastic protrusion 312 to deform. At the same time, the deformed elastic protrusion 312 will also generate a reverse force on the first pipe section 210 of the second pipe 200, so that the second pipe 200 is reset relative to the first pipe 110. During the deformation process, each elastic protrusion 312 can slow down the transmission of the vibration generated by the compressor to the liquid reservoir body 100 in different directions.

[0045] Please refer to Figure 4 In some optional embodiments, each elastic protrusion 312 includes a plurality of continuous protrusions 3121 along the axial direction of the retaining spring body 311. The plurality of protrusions 3121 are all protruded toward the inner wall of the first pipe 110 and are all abutted against the inner wall of the first pipe 110. The plurality of continuous protrusions 3121 can enhance the elastic deformation capacity of the elastic protrusion 312.

[0046] Exemplarily, each elastic protrusion 312 includes two continuous protrusions 3121 along the axial direction of the spring body 311, so that the shape of the elastic protrusion 312 on the cross section passing through the axis of the spring body 311 is roughly W-shaped. It can be understood that each elastic protrusion 312 can also include more than three protrusions 3121, which is not limited to this.

[0047] Please continue to refer to Figure 2 In this embodiment, the elastic component 300 also includes a first sealing portion 320 and a second sealing portion 330. The first sealing portion 320 and the second sealing portion 330 are both arranged between the first pipe 110 and the second pipe 200. The elastic retaining ring 310 is respectively abutted against the first sealing portion 320 and the second sealing portion 330 at both ends along the axial direction of the first pipe 110.

[0048] The first sealing portion 320 and the second sealing portion 330 are both arranged between the first pipe section 210 of the first pipe 110 and the second pipe 200. The first sealing portion 320 is in flexible contact with the first pipe section 210 of the first pipe 110 and the second pipe 200 at the same time, and the second sealing portion 330 is in flexible contact with the first pipe section 210 of the first pipe 110 and the second pipe 200 at the same time; in the axial direction of the first pipe 110, the first sealing portion 320 and the second sealing portion 330 are respectively abutted against the two ends of the elastic retaining spring 310, which not only play a role in axial positioning of the elastic retaining spring 310, but also play a sealing role.

[0049] The first sealing portion 320 forms a first seal and flexible contact between the first pipe 110 and the second pipe 200, and the second sealing portion 330 forms a first seal and flexible contact between the first pipe 110 and the second pipe 200, and the second sealing portion 330 is close to the bottom end of the first pipe 110, thereby isolating and sealing the interior of the liquid reservoir body from the external environment.

[0050] The material of the first sealing portion 320 and the second sealing portion 330 can be rubber, nylon, silicone or other elastic damping materials, which are not limited.

[0051] In other embodiments, in addition to the first sealing portion 320 and the second sealing portion 330 , a plurality of other sealing portions are provided between the first pipe 110 and the second pipe 200 , and these sealing portions can play a role in strengthening the sealing.

[0052] In this embodiment, the first sealing portion 320 and the second sealing portion 330 are both annular, and the first pipe 110 is provided with a first annular groove 111 and a second annular groove 112. The first sealing portion 320 is snap-fitted with the first annular groove 111, and the second sealing portion 330 is snap-fitted with the second annular groove 112.

[0053] When the first sealing portion 320 is snap-fitted with the first annular groove 111 and the second sealing portion 330 is snap-fitted with the second annular groove 112, the first sealing portion 320 and the second sealing portion 330 are not easily displaced along the axial direction of the first pipe 110. Since the two ends of the elastic retaining spring 310 are respectively abutted against the first sealing portion 320 and the second sealing portion 330, the axial positioning effect of the elastic retaining spring 310 is enhanced.

[0054] In this embodiment, two first convex rings 113 and two second convex rings 114 are protruded on the first pipe 110. Both the first convex rings 113 and the second convex rings 114 are protruded toward the second pipe 200. A first annular groove 111 is formed between the two first convex rings 113, and a second annular groove 112 is formed between the two second convex rings 114.

[0055] When the first sealing portion 320 is snap-fitted with the first annular groove 111, the outer edge of the first sealing portion 320 abuts against the inner wall of the first pipe 110 and the sides of the two first convex rings 113 at the same time, which on the one hand limits the axial movement of the first sealing portion 320 along the first pipe 110, and on the other hand extends the sealing line in the axial direction of the first pipe 110; when the second sealing portion 330 is snap-fitted with the second annular groove 112, the outer edge of the second sealing portion 330 abuts against the inner wall of the first pipe 110 and the two second convex rings 114 at the same time, which on the one hand limits the axial movement of the second sealing portion 330 along the first pipe 110, and on the other hand extends the sealing line in the axial direction of the first pipe 110.

[0056] In some embodiments, a portion of the first sealing portion 320 passes over the first protruding ring 113, and a groove that cooperates with the first protruding ring 113 is provided at the position where the first sealing portion 320 passes over the first protruding ring 113, further preventing the first sealing portion 320 from moving axially along the first pipe 110; and / or a portion of the second sealing portion 330 passes over the second protruding ring 114, and a groove that cooperates with the second protruding ring 114 is provided at the position where the second sealing portion 330 passes over the second protruding ring 114, further preventing the second sealing portion 330 from moving axially along the first pipe 110.

[0057] Exemplarily, the second sealing portion 330 passes over the second protruding ring 114 near the curved section 220 of the second pipe 200, and a groove cooperating with the second protruding ring 114 is provided at the position where the second sealing portion 330 passes over the second protruding ring 114, thereby further preventing the second sealing portion 330 from moving axially along the first pipe 110 and enhancing the sealing effect.

[0058] Please refer to Figure 5 In this embodiment, the elastic spring 310 satisfies: 0.1≤(H 1 -H 2 ) / H 1 ≤0.3, where H1 H is the maximum distance between the surface of the elastic protrusion 312 that is away from the second pipe 200 during the deformation process and the outer wall of the second pipe 200, 2 It is the minimum distance between the surface of the elastic protrusion 312 that faces away from the second pipe 200 during the deformation process and the outer wall of the second pipe 200 .

[0059] It should be noted that the elastic protrusion 312 can be deformed along the radial direction of the first tube section 210. 1 H is the maximum distance between the surface of the elastic protrusion 312 away from the first tube segment 210 and the outer wall of the first tube segment 210 during the deformation process, 2 is the minimum distance between the surface of the elastic protrusion 312 facing away from the first tube segment 210 and the outer wall of the first tube segment 210 during the deformation process, ΔH=H 1 -H 2 , ΔH is the deformation of the elastic protrusion 312 along the radial direction of the first tube segment 210, when 0.1≤ΔH / H 1 When ≤0.3, the deformation amount of the elastic protrusion 312 along the radial direction of the first pipe section 210 will not be too large. Within this deformation amount range, the elastic protrusion 312 can effectively suppress the vibration transmission.

[0060] In this embodiment, the wall thickness of the elastic retaining spring 310 is less than or equal to 2 mm.

[0061] By limiting the wall thickness of the elastic retaining spring 310, that is, the wall thickness of the retaining spring body 311 and the elastic protrusion 312 are both less than or equal to 2 mm, a better elastic buffering effect is ensured. In a preferred embodiment, the wall thickness of the retaining spring body 311 and the elastic protrusion 312 are both less than or equal to 1 mm.

[0062] An embodiment of the present application also provides a rotary compressor, including a shell (not shown) and the above-mentioned liquid reservoir, the liquid reservoir body 100 and the second pipe 200 are both connected to the shell, and a flexible connection is achieved between the liquid reservoir body 100 and the shell by arranging a rubber pad and a clamp structure, and the second pipe section 230 of the second pipe 200 is welded to the shell.

[0063] When the excitation vibration source of the compressor generates vibration, the vibration is mostly transmitted through the shell and the second pipe section 230, the curved section 220, and the first pipe section 210 of the second pipe 200. However, the elastic retaining spring 310 can suppress the vibration generated by the compressor from being transmitted to the liquid reservoir body 100, thereby effectively improving the vibration response of the liquid reservoir and reducing noise radiation.

[0064] In summary, the embodiments of the present application provide a liquid reservoir and a rotary compressor. When the second pipe section 230 of the second pipe 200 is welded to the shell of the compressor, the excitation vibration source of the compressor transmits the vibration to the second pipe 200 through the shell. Since an elastic component 300 is arranged between the first pipe 110 and the first pipe section 210 of the second pipe 200, the elastic component 300 can suppress the vibration generated by the compressor from being transmitted to the liquid reservoir body 100, thereby effectively improving the vibration response of the liquid reservoir and reducing noise radiation.

[0065] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A liquid storage device, characterized in that: include: A liquid reservoir body (100), the liquid reservoir body (100) being used to be connected to a housing of a compressor, a first pipe (110) being arranged inside the liquid reservoir body (100), and the first pipe (110) extending to the bottom of the liquid reservoir body (100); a second pipeline (200), one end of the second pipeline (200) extending into the first pipeline (110), and the other end of the second pipeline (200) being used to be connected to a casing of the compressor; An elastic component (300) is disposed between the first pipe (110) and the second pipe (200) and is used to suppress vibration transmission.

2. The liquid storage device according to claim 1, characterized in that: The elastic component (300) comprises an elastic retaining spring (310), the elastic retaining spring (310) is sleeved on the second pipe (200), and the elastic retaining spring (310) abuts against the inner wall of the first pipe (110).

3. The liquid reservoir according to claim 2, characterized in that The elastic retaining spring (310) comprises an annular retaining spring body (311) and a plurality of elastic protrusions (312) arranged at intervals along the circumference of the retaining spring body (311); the retaining spring body (311) is sleeved on the second pipe (200); the plurality of elastic protrusions (312) are all protruded toward the inner wall of the first pipe (110) and are in contact with the inner wall of the first pipe (110).

4. The liquid reservoir according to claim 3, characterized in that Each of the elastic protrusions (312) comprises a plurality of continuous protrusions (3121) along the axial direction of the retaining spring body (311); the plurality of protrusions (3121) are all protruded toward the inner wall of the first pipe (110) and are in contact with the inner wall of the first pipe (110).

5. The liquid reservoir according to claim 2, characterized in that: The elastic component (300) further comprises a first sealing portion (320) and a second sealing portion (330), wherein the first sealing portion (320) and the second sealing portion (330) are both arranged between the first pipe (110) and the second pipe (200), and the two ends of the elastic retaining spring (310) along the axial direction of the first pipe (110) are respectively in contact with the first sealing portion (320) and the second sealing portion (330).

6. The liquid reservoir according to claim 5, characterized in that The first sealing portion (320) and the second sealing portion (330) are both annular, and the first pipe (110) is provided with a first annular groove (111) and a second annular groove (112), the first sealing portion (320) is snap-fitted with the first annular groove (111), and the second sealing portion (330) is snap-fitted with the second annular groove (112).

7. The liquid reservoir according to claim 6, characterized in that Two first convex rings (113) and two second convex rings (114) are convexly provided on the first pipe (110); the first convex ring (113) and the second convex ring (114) are both convexly provided toward the second pipe (200); the first annular groove (111) is formed between the two first convex rings (113); and the second annular groove (112) is formed between the two second convex rings (114).

8. The liquid reservoir according to claim 3, characterized in that The elastic retaining spring (310) satisfies the following condition: 0.1≤(H1-H2) / H1≤0.3, wherein H1 is the maximum distance between the surface of the elastic protrusion (312) that deviates from the second pipe (200) during deformation and the outer wall of the second pipe (200), and H2 is the minimum distance between the surface of the elastic protrusion (312) that deviates from the second pipe (200) during deformation and the outer wall of the second pipe (200).

9. The liquid reservoir according to claim 2, characterized in that: The wall thickness of the elastic retaining spring (310) is less than or equal to 2 mm.

10. A rotary compressor, characterized in that: It comprises a shell and the liquid reservoir according to any one of claims 1 to 9, wherein the liquid reservoir body (100) and the second pipe (200) are both connected to the shell.

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