CN217303267U

CN217303267U - Liquid storage device

Info

Publication number: CN217303267U
Application number: CN202220858244.3U
Authority: CN
Inventors: 金海龙; 兰伟; 宇汝巢
Original assignee: Dunan Wuhu Zhongyuan Automatic Control Co ltd
Current assignee: Dunan Wuhu Zhongyuan Automatic Control Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-08-26
Anticipated expiration: 2032-04-14

Abstract

The utility model provides a liquid storage device, liquid storage device includes: a barrel having a receiving cavity; the first communication pipe penetrates through the cylinder body and is provided with a first circulation port and a second circulation port which are oppositely arranged, the first circulation port is arranged on the outer side of the cylinder body, and the second circulation port is communicated with the containing cavity; the second communication pipe is arranged on the cylinder in a penetrating mode and provided with a third circulation port and a fourth circulation port which are arranged oppositely, the third circulation port is arranged in the containing cavity, the fourth circulation port is arranged on the outer side of the containing cavity, and a first chamfer is arranged on the outer peripheral edge of the fourth circulation port; and the sleeve pipe is sleeved and connected with one end, close to the fourth circulation port, of the second communicating pipe. Use the technical scheme of the utility model, can solve the low problem of reservoir welding strength among the prior art.

Description

Liquid storage device

Technical Field

The utility model relates to a reservoir technical field particularly, relates to a reservoir.

Background

At present, current reservoir includes barrel and communicating pipe, is provided with in the barrel and holds the chamber, wears to establish on the barrel communicating pipe, and is linked together with holding the chamber, and the one end of communicating pipe can directly weld with other pipelines, but the welding effect of communicating pipe can't be guaranteed to above-mentioned scheme, and the welded junction after the welding can produce crackle or clearance communicating pipe usually to the performance of device has been influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a reservoir to solve the low problem of reservoir welding strength among the prior art.

The utility model provides a liquid storage device, the liquid storage device includes: a barrel having an accommodating chamber; the first communication pipe penetrates through the cylinder body and is provided with a first circulation port and a second circulation port which are oppositely arranged, the first circulation port is arranged on the outer side of the cylinder body, and the second circulation port is communicated with the containing cavity; the second communication pipe is arranged on the cylinder in a penetrating mode and provided with a third circulation port and a fourth circulation port which are arranged oppositely, the third circulation port is arranged in the containing cavity, the fourth circulation port is arranged on the outer side of the containing cavity, and a first chamfer is arranged on the outer peripheral edge of the fourth circulation port; and the sleeve pipe is sleeved and connected with one end, close to the fourth circulation port, of the second communicating pipe.

Use the technical scheme of the utility model, set up first chamfer at the periphery of fourth circulation mouth, in the installation of device, because the external diameter of first chamfer increases along the direction of second straightway to bend section gradually, in the installation, first chamfer can lead the sleeve pipe, make the assembly of sleeve pipe and second straightway easier, thereby be convenient for the installation of sleeve pipe and second communicating pipe, and then the holistic installation effectiveness of reservoir has been improved, simultaneously because the sleeve pipe is established to a pot head of second communicating pipe, when second communicating pipe needs to weld with other pipelines, weld second communicating pipe and other pipelines together through the sleeve pipe, can guarantee the welding strength after second communicating pipe and other pipeline weldings through setting up the sleeve pipe, the stability when the operation of reservoir has so been guaranteed.

Further, the length of the first chamfer in the axial direction of the second communication pipe is less than or equal to the wall thickness of the second communication pipe. Through setting up above-mentioned structure, in the installation of device, can make first chamfer have sufficient direction length to can guarantee first chamfer and to sheathed tube direction effect, required time when having shortened sleeve pipe and second and communicating pipe installation has further improved the installation effectiveness of sleeve pipe and second communicating pipe.

Further, the axial length of the first chamfer is between 0.38mm and 1 mm; and/or the wall thickness of the sleeve is greater than or equal to 0.2 mm. So set up, simple structure and easily processing have correspondingly reduced the manufacturing cost of device when can guaranteeing the effective guide length of first chamfer, simultaneously, set up sheathed tube wall thickness to be more than or equal to 0.2mm, so can prevent to appear the solder because sheathed tube wall thickness is too thin and melt the sheathed tube problem to the stability of sheathed tube self structure when the welding has been guaranteed, and then can guarantee the safety when sleeve pipe and second straightway weld.

Further, the second communicating pipe comprises a first straight line section and a second straight line section which are connected in sequence, and the third circulating port and the fourth circulating port are respectively arranged at the end parts of the first straight line section and the second straight line section. So set up, first straightway and second straightway can carry out the water conservancy diversion to the medium to can improve the circulation efficiency of device, guarantee the normal operating of device.

Further, the second communicating pipe further comprises a reducing section, the reducing section is arranged between the first straight line section and the second straight line section and connected with the second straight line section, and the inner diameter of the reducing section is gradually reduced or gradually increased from the first straight line section to the second straight line section. The reducing section can be communicated with the first straight line section and the second straight line section, and simultaneously, the inner diameter of the reducing section is gradually reduced or gradually increased, so that when a medium flows into the second straight line from the first straight line section, the reducing section can buffer the medium, the damage to the second straight line section caused by overlarge impact force of the medium on the second straight line is prevented, and the structural strength of the second straight line section is guaranteed.

Further, the second communicating pipe further comprises a bent section, the bent section is arranged between the first straight section and the second straight section, the bent section is connected with the first straight section, and an included angle is formed between the axis of the first straight section and the axis of the second straight section. Through setting up above-mentioned structure, when the medium got into the second when communicating pipe from first straight-line segment, the crooked section can cushion the medium to prevent that the medium from too big and cause the damage of second communicating pipe to the impact force of second communicating pipe, can guarantee the structural strength of second communicating pipe through setting up above-mentioned structure, thereby be favorable to prolonging the life of second communicating pipe.

Further, the sleeve and the first chamfer do not overlap in the axial direction of the second straight section. Through setting up above-mentioned structure, can prevent that the solder from producing to pile up between first chamfer and sleeve pipe to avoid unnecessary solder to produce the influence to the device, guaranteed the stability of device operation.

Further, the sleeve and the second straight section are in interference fit. Through setting up above-mentioned structure, accomplish the back at sleeve pipe and second straightway installation, because sheathed tube internal diameter is less than the external diameter of second straightway, so can make assembly, the connection of the two more inseparabler to can further guarantee the structural strength behind sleeve pipe and the installation of second straightway.

Further, the length of the sleeve is less than or equal to the length of the second linear section. With the adoption of the arrangement, the welding length of the sleeve and the second straight line section can be ensured, the structural strength of the welded sleeve and the welded second straight line section can be ensured, and meanwhile, leakage caused by excessive welding materials from a gap between the welded sleeve and the welded second straight line section can be avoided, so that the stability of the device in operation is further ensured.

Furtherly, the sleeve pipe is different materials with the material of second communicating pipe, and the sleeve pipe specifically is the copper sheathing, and second communicating pipe specifically is the iron pipe. The device is simple in structure and low in material cost, and the production cost of the device is further reduced while the sleeve and the second communicating pipe are ensured to be welded stably.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a reservoir provided by the present invention;

fig. 2 shows a schematic cross-sectional view of a reservoir provided by the present invention;

fig. 3 shows an enlarged schematic view at a in fig. 2.

Wherein the figures include the following reference numerals:

10. a barrel; 11. an accommodating chamber;

20. a first communication pipe; 21. a first circulation port; 22. a second flow port;

30. a second communicating pipe; 31. a third flow port; 32. a fourth flow port; 33. a first chamfer; 34. a diameter-changing section;

40. a sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the present invention provides a liquid container, which comprises a cylinder 10, a first communicating pipe 20, a second communicating pipe 30 and a cylinder 10. The cylinder 10 has an accommodating cavity 11, the first communication pipe 20 is arranged on the cylinder 10 in a penetrating manner, the first communication pipe 20 has a first communication port 21 and a second communication port 22 which are arranged oppositely, the first communication port 21 is arranged on the outer side of the cylinder 10, the second communication pipe 22 is communicated with the accommodating cavity 11, the second communication pipe 30 is arranged on the cylinder 10 in a penetrating manner, the second communication pipe 30 has a third communication port 31 and a fourth communication port 32 which are arranged oppositely, the third communication port 31 is arranged in the accommodating cavity 11, the fourth communication port 32 is arranged on the outer side of the accommodating cavity 11, the outer periphery of the fourth communication port 32 is provided with a first chamfer 33, and the sleeve 40 is connected with one end of the second communication pipe 30 close to the fourth communication port 32 in a sleeved manner.

Use the technical scheme of the utility model, along setting up first chamfer 33 in the periphery of fourth circulation mouth 32, in the installation of device, because the direction crescent of second straightway to bend section is followed to the external diameter of first chamfer 33, in the installation, first chamfer 33 can lead sleeve pipe 40, make the assembly of sleeve pipe 40 and second straightway easier, thereby be convenient for sleeve pipe 40 and the installation of second communicating pipe 30, and then the holistic installation effectiveness of reservoir has been improved, simultaneously because sleeve pipe 40 is established to the pot head of second communicating pipe 30, when second communicating pipe 30 needs to weld with other pipelines, through sleeve pipe 40 with second communicating pipe 30 with other pipeline welding together, can guarantee the welding strength after second communicating pipe 30 and other pipeline welding through setting up sleeve pipe 40, so guaranteed the stability of reservoir when the operation.

In the embodiment of the present application, as shown in fig. 3, the first chamfer 33 makes an angle α with the axis of the

fourth communication port

32, 20 ° α 60 °. If alpha is less than 20 or alpha is greater than 60 degrees, first chamfer 33 can't satisfy the guide effect to sleeve pipe 40, also is convenient for simultaneously first chamfer 33's processing degree, has improved the processing degree of difficulty of first chamfer 33, consequently in this application, with alpha setting in 20 to 60 within ranges, first chamfer 33 can lead to sleeve pipe 40 when not only can guaranteeing to install sleeve pipe 40, the processing of first chamfer 33 of also being convenient for simultaneously. Specifically, α may be set to 20 ° or 45 ° or 60 °.

Of course, in other embodiments of the present application, the first chamfer 33 and the sleeve 40 may also be disposed on the outer periphery of the first circulation port 21, and the specific disposition may be selected according to the usage environment of the device, so as to improve the application range of the device, thereby being beneficial to improving the adaptability of the device. Specifically, the first communicating pipe 20 is an air inlet pipe, the second communicating pipe 30 is an air outlet pipe, and a first chamfer 33 and a sleeve 40 are arranged at the port of the air inlet pipe, which is positioned at the outer side of the cylinder 10; the port of the air outlet pipe positioned at the outer side of the cylinder body is provided with a first chamfer 33 and a sleeve 40, or the port of the air inlet pipe and the port of the air outlet pipe positioned at the outer side of the cylinder body are both provided with a first chamfer 33 and a sleeve 40.

Wherein, the axial length of the first chamfer 33 along the second straight line section is less than or equal to the wall thickness of the second straight line section. Through setting up above-mentioned structure, in the installation of device, can make first chamfer 33 have sufficient direction length to can guarantee first chamfer 33 to the guide effect of sleeve pipe 40, required time when having shortened sleeve pipe 40 and the installation of second communicating pipe 30, further improve the installation effectiveness of sleeve pipe 40 and second communicating pipe 30.

As shown in FIG. 3, the axial length of the first chamfer 33 is L1, wherein L1 is 0.38mm ≦ 1 mm. If L1 is less than 0.38mm, the effective contact area between the first chamfer 33 and the sleeve 40 is reduced, so that the effective guiding length of the first chamfer 33 cannot be ensured to influence the guiding performance of the first chamfer 33; if L1 is greater than 1mm, then can reduce the actual cooperation length of first chamfer 33 and sleeve pipe 40, so can influence the installation of sleeve pipe 40 and second communicating pipe 30, thereby the structural strength after the installation of the two has been reduced, simultaneously because the overlength of L1 also can increase the manufacturing cost of device, consequently in this application, set up L1 between 0.38mm to 1mm, so set up, simple structure and easy processing, corresponding low manufacturing cost who has reduced the device when can guarantee the effective guide length of first chamfer 33. In particular, L1 may be 0.38mm or 0.5mm or 1 mm.

As shown in FIG. 3, the wall thickness of the sleeve 40 is D2, D2 ≧ 0.2 mm. With the adoption of the arrangement, the problem that the sleeve 40 is melted by the solder due to the fact that the wall thickness of the sleeve 40 is too thin when the sleeve 40 and the second straight line section are welded can be prevented, so that the stability of the structure of the sleeve 40 during welding is ensured, and the safety of the sleeve 40 during welding with the second straight line section can be further ensured. Specifically, D1 may be 0.2mm or 0.5mm or 0.7mm, and in embodiments of the present application, a tin bronze furnace weld is used between the sleeve 40 and the second straight segment.

Further, the second communicating pipe 30 includes a first straight line section and a second straight line section which are connected in sequence, the third circulation port 31 and the fourth circulation port 32 are respectively disposed at the end portions of the first straight line section and the second straight line section, and an included angle is formed between the axis of the first straight line section and the axis of the second straight line section. So set up, first straightway and second straightway can carry out the water conservancy diversion to the medium to can improve the circulation efficiency of device, guaranteed the normal operating of device. Of course, in other embodiments of the present application, the second communication pipe 30 may also be configured as a pipe with a fixed diameter, and the specific configuration may be selected according to the usage environment of the device, so as to improve the adaptability of the device.

The second communicating pipe 30 further includes a reducing section 34, the reducing section 34 is disposed between the first straight line section and the second straight line section, the reducing section 34 is connected with the second straight line section, and the inner diameter of the reducing section 34 is gradually reduced or gradually increased from the first straight line section to the second straight line section. The reducer section 34 can communicate the bent section with the second straight section, and simultaneously, because the inner diameter of the reducer section 34 is gradually reduced or gradually increased, when the medium flows into the second straight section from the bent section, the reducer section 34 can buffer the medium, so as to prevent the medium from damaging the second straight section due to overlarge impact force when the medium is applied to the second straight section, and further ensure the structural strength of the second straight section.

Further, the second communicating pipe further comprises a bent section, the bent section is arranged between the first straight section and the second straight section, the bent section is connected with the first straight section, and an included angle is formed between the axis of the first straight section and the axis of the second straight section. Through setting up above-mentioned structure, when the medium gets into second communicating pipe 30 from first straight line segment, the crooked section can cushion the medium to prevent that the medium from too big and cause the damage of second communicating pipe 30 to the impact force of second communicating pipe 30, can guarantee the structural strength of second communicating pipe 30 through setting up above-mentioned structure, thereby be favorable to prolonging the life of second communicating pipe 30.

Further, the sleeve 40 and the first chamfer 33 do not overlap in the axial direction of the second straight line segment. By adopting the structure, the solder can be prevented from being accumulated between the first chamfer 33 and the sleeve 40, thereby avoiding the influence of the redundant solder on the device and ensuring the stability of the device during operation.

As shown in FIG. 3, the length of the sleeve 40 is L2, L2 is 10 mm-20 mm. If L2 is less than 10mm, the effective welding length of the sleeve 40 and the second straight line segment will be reduced, which affects the connection strength of the sleeve 40 and the second straight line segment; if L2 is greater than 20mm, some solder may not flow well enough, which may result in a position between the sleeve 40 and the second straight section where the solder cannot flow, thereby affecting the soldering strength of the two. Therefore, in the application, the L2 is arranged between 10mm and 20mm, so that the structural strength of the two after welding can be ensured, the influence on the device caused by redundant welding flux can be avoided, and the stability of the device in operation is ensured while resources are saved. In particular, L2 may be 10mm or 15mm or 20 mm.

Wherein, the sleeve 40 and the second straight section are in interference fit. Through setting up above-mentioned structure, after sleeve 40 and the installation of second straightway are accomplished, because the internal diameter of sleeve 40 is less than the external diameter of second straightway, so can make the assembly of the two, connect more closely to can further guarantee the structural strength after sleeve 40 and the installation of second straightway.

Specifically, the length of the sleeve 40 is smaller than or equal to that of the second straight line section, so that the welding length of the sleeve 40 and the second straight line section can be ensured, the structural strength of the sleeve and the second straight line section after welding can be ensured, leakage from a gap between the sleeve and the second straight line section due to excessive welding materials can be avoided, and the stability of the device during operation is further ensured.

Further, the interference of the sleeve 40 with the second straight section is set between 0.05mm and 0.2 mm. If the interference magnitude is less than 0.05mm, the assembling tightness between the sleeve 40 and the second straight-line section is loose, and the mutual limiting of the two after assembling cannot be guaranteed; if the interference magnitude is greater than 0.2mm, the assembling tightness between the sleeve 40 and the second straight line section is too tight, the sleeve 40 is not easy to assemble with the second straight line section, and therefore the installing difficulty of the sleeve and the second straight line section is improved, the interference magnitude is set between 0.05mm and 0.2mm in the application, and the installing difficulty between the sleeve and the second straight line section is correspondingly reduced while the assembling requirements of the sleeve and the second straight line section can be met. In particular, D1 may be 0.05mm or 0.1mm or 0.2 mm.

Wherein, in the embodiment of the present application, the outer diameter of the second straight section is smaller than the outer diameter of the bent section. Through setting up above-mentioned structure, the installation space can be reserved to the second straightway to after second straightway and sleeve pipe 40 welded, the second straightway can be connected the installation with other first ware subassemblies of air conditioning system, thereby can satisfy the installation demand of reservoir. Of course, in other embodiments of the present application, the outer diameter of the second straight section may also be set to be greater than or equal to the outer diameter of the curved section, and the specific setting condition may be selected according to the use environment of the device, so that the application range of the device can be further increased.

Further, the sleeve 40 and the second communicating pipe 30 are made of different materials, the sleeve 40 is specifically a copper sleeve, and the second communicating pipe 30 is specifically an iron pipe. The arrangement is simple in structure and low in material cost, and the production cost of the device is further reduced while the welding stability of the sleeve 40 and the second communicating pipe 30 is ensured. In other embodiments of the present application, the sleeve 40 and the second communication pipe 30 may also be provided as aluminum pipes or steel pipes as long as the use requirement of the apparatus can be met.

By applying the technical proposal of the utility model, the first chamfer 33 is arranged at the periphery of the fourth circulation port 32, during the installation of the device, since the outer diameter of the first chamfer 33 is gradually increased in the direction from the second straight section to the bent section, during the installation process, the first chamfer 33 can guide the sleeve 40, so that the assembly of the sleeve 40 and the second straight line segment is easier, thereby facilitating the installation of the sleeve 40 and the second communicating pipe 30, thereby improving the installation efficiency of the whole liquid storage device, and simultaneously, as one end of the second communicating pipe 30 is sleeved with the sleeve 40, when the second communication pipe 30 needs to be welded with other pipelines, the second communication pipe 30 can be welded with other pipelines through the sleeve 40, because sleeve pipe 40 has good welding performance to can guarantee the welding strength after second communicating pipe 30 welds, so guaranteed the stability in operation of reservoir. And, sleeve 40 and second straightway are interference fit, through setting up above-mentioned structure, after sleeve 40 and the installation of second straightway are accomplished, because the internal diameter of sleeve 40 is less than the external diameter of second straightway, so can make the assembly of the two, connect more closely to can further guarantee the structural strength after sleeve 40 and the installation of second straightway.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reservoir, comprising:

a cylinder (10) having a housing chamber (11);

the first communication pipe (20) is arranged on the cylinder body (10) in a penetrating mode, the first communication pipe (20) is provided with a first circulation port (21) and a second circulation port (22) which are arranged oppositely, the first circulation port (21) is arranged on the outer side of the cylinder body (10), and the second circulation port (22) is communicated with the accommodating cavity (11);

the second communication pipe (30) is arranged on the cylinder body (10) in a penetrating mode, the second communication pipe (30) is provided with a third circulation port (31) and a fourth circulation port (32) which are arranged oppositely, the third circulation port (31) is arranged in the accommodating cavity (11), the fourth circulation port (32) is arranged on the outer side of the accommodating cavity (11), and a first chamfer (33) is arranged on the outer periphery of the fourth circulation port (32);

and the sleeve (40) is sleeved and connected with one end, close to the fourth circulating port (32), of the second communicating pipe (30).

2. Reservoir according to claim 1, characterized in that the length of the first chamfer (33) in the axial direction of the second communication tube (30) is smaller than or equal to the wall thickness of the second communication tube (30).

3. Reservoir according to claim 1, characterized in that the axial length of the first chamfer (33) is between 0.38mm and 1 mm; and/or the wall thickness of the sleeve (40) is greater than or equal to 0.2 mm.

4. The reservoir according to claim 1, characterized in that the second communicating tube (30) comprises a first straight segment and a second straight segment connected in series, the third and fourth communication ports (31, 32) being provided at the ends of the first and second straight segments, respectively.

5. The reservoir according to claim 4, characterized in that the second communication pipe (30) further comprises a reducing section (34), the reducing section (34) is arranged between the first straight section and the second straight section, the reducing section (34) is connected with the second straight section, and the inner diameter of the reducing section (34) is gradually reduced or gradually increased from the first straight section to the second straight section.

6. Reservoir according to claim 4, characterized in that said second communicating tube (30) further comprises a curved section arranged between said first and second rectilinear sections, said curved section being connected to the first rectilinear section, the axis of said first rectilinear section having an angle with the axis of said second rectilinear section.

7. Reservoir according to claim 4, characterized in that the sleeve (40) does not overlap the first chamfer (33) in the direction of the axis of the second straight section.

8. Reservoir according to claim 4, characterized in that said sleeve (40) is an interference fit with said second rectilinear segment.

9. Reservoir according to claim 6, characterized in that the length of said sleeve (40) is less than or equal to the length of said second straight section.

10. The liquid reservoir according to claim 1, wherein the sleeve and the second communication pipe (30) are made of different materials, the sleeve (40) is a copper sleeve, and the second communication pipe (30) is an iron pipe.