Liquid storage device

Abstract

A sealing head part is provided with an outlet hole channel, a hole channel of a liquid suction pipe is communicated with a liquid storage cavity of the liquid storage device and the outlet hole channel, a first end part of the liquid suction pipe comprises a first limiting part and a second limiting part, the two limiting parts are arranged in a protruding mode in the radial direction of the liquid suction pipe, and the first limiting part abuts against the sealing head part in the axial direction for limiting. The second limiting part is in abutting connection with the end socket part in the circumferential direction for limiting, the second end part is close to the circumferential wall part of the tank body part relative to the first end part in the radial direction of the liquid storage device, and a pipe opening of the second end part faces the circumferential wall part of the tank body part. According to the scheme, the structure of the liquid suction pipe and the connecting mode of the liquid suction pipe and the end socket part are changed, so that one end of the liquid suction pipe can be stably connected with the end socket part through axial limiting of the first limiting part and circumferential limiting of the second limiting part, and the direction of a pipe opening of the liquid suction pipe is no longer limited to the bottom wall part pointing to the liquid storage device; the limitation of the installation direction of the liquid storage device is broken through.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat management, and particularly relates to a liquid accumulator for vehicles or energy storage. BACKGROUND

[0002] The liquid accumulator generally comprises a head, a body, a filter component and a drainage pipe. The head and the body are welded to form a sealed container. The refrigerant passes through the filter component and then flows out from the outlet through the inlet pipe, thereby realizing the functions of storing refrigerant, filtering impurities and absorbing moisture. Due to the limitation of gravity and the structure of the liquid accumulator, the liquid accumulator is generally arranged along the direction of gravity for use, and the installation and arrangement direction is limited. SUMMARY

[0003] The purpose of the present application is to provide a liquid accumulator, which is improved in structure to break through the limitation of the installation direction of the liquid accumulator.

[0004] The present application discloses a liquid accumulator, which comprises a head part, a tank body part and a liquid suction pipe. Along the axial direction of the liquid accumulator, the head part is located on one side of the tank body part, and the head part is fixedly connected with the tank body part. The liquid accumulator has a liquid storage cavity, and the wall forming the liquid storage cavity is at least partially located in the head part and the tank body part. At least part of the liquid suction pipe is located in the liquid storage cavity. The head part has an outlet channel, and the pipeline of the liquid suction pipe communicates the outlet channel with the liquid storage cavity. The liquid suction pipe comprises a first end part and a second end part. The first end part of the liquid suction pipe comprises a first limiting part and a second limiting part, which are protrusively arranged along the radial direction of the liquid suction pipe. The first limiting part can abut against and limit the head part in the axial direction of the first end part, and the second limiting part can abut against and limit the head part in the circumferential direction of the first end part. Along the radial direction of the liquid accumulator, the second end part is closer to the circumferential wall part of the tank body part relative to the first end part, and the pipe opening of the second end part of the liquid suction pipe faces the circumferential wall part of the tank body part.

[0005] The liquid reservoir provided by the technical scheme of the application comprises a head part, a tank body part and a liquid suction pipe. The head part has an outlet channel. The channel of the liquid suction pipe is connected with the liquid storage cavity of the liquid reservoir and the outlet channel. The first end part of the liquid suction pipe comprises a first limiting part and a second limiting part. The two limiting parts are arranged protruding along the radial direction of the liquid suction pipe. The first limiting part can be in axial abutment with the head part for limiting. The second limiting part can be in circumferential abutment with the head part for limiting. Along the radial direction of the liquid reservoir, the second end part is closer to the peripheral wall part of the tank body part relative to the first end part. The pipe opening of the second end part faces the peripheral wall part of the tank body part. Compared with the structure that the baffle and the head are combined to fix the drainage pipe in the traditional liquid reservoir, the structure of the liquid suction pipe and the connection mode with the head part are changed in the present scheme, so that one end part of the liquid suction pipe can be stably connected with the head part through the axial limiting of the first limiting part and the circumferential limiting of the second limiting part. The direction of the pipe opening of the liquid suction pipe is no longer limited to pointing to the bottom wall part of the liquid reservoir, so as to break through the limitation of the installation direction of the liquid reservoir. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 FIG. 1 is a schematic diagram of the main structure of the liquid reservoir provided by an embodiment of the application;

[0007] Figure 2 FIG. 2 is a schematic diagram of the structure of the head part and the liquid suction pipe in FIG. 1; Figure 1

[0008] Figure 3 FIG. 3 is a schematic diagram of the interface part of the combination of the head part and the liquid suction pipe in FIG. 2; Figure 2

[0009] Figure 4 FIG. 4 is a schematic diagram of the structure of the liquid suction pipe in FIG. 3;

[0010] Figure 5 FIG. 5 is a schematic diagram of the pipe opening of the first end part of the liquid suction pipe in FIG. 4; Figure 4

[0011] Figure 6 FIG. 6 is a schematic diagram of the cooperation structure of the filter structure in the liquid reservoir and the tank body part in FIG. 5;

[0012] Figure 7 FIG. 7 is a schematic diagram of the structure from another perspective in FIG. 6; Figure 6

[0013] ​​​​Explanation of reference signs: 1, head part; 101, inlet channel; 102, outlet channel; 2, tank body part; 20, liquid storage cavity; 21, peripheral wall part; 22, bottom wall part; 3, liquid suction pipe; 301, pipe opening; 30, pipe; 31, first end part; 32, bending section; 33, second end part; 311, first limiting part; 312, second limiting part; 313, connecting part; 11, interface part; 111, first interface end part; 112, second interface end part; 100, interface cavity; 110, sealing cavity; 120, transition cavity; 130, rotation-stopping cavity; 140, limiting groove; 3121, diameter-enlarging part; 3122, protruding part; 131, first bottom wall; 4, filter; 41, second bottom wall; 3128, first wall body; 3129, second wall body. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the utility model more clearly understood, the utility model will be further described in detail below with specific drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0015] Reference Figure 1The utility model discloses an embodiment provides a kind of liquid accumulator, including head part 1, tank body part 2 and liquid suction pipe 3, along the axial direction of liquid accumulator, head part 1 is located in one side of tank body part 2, head part 1 is fixedly connected with tank body part 2, fixedly connected includes welding, riveting, screw connection etc., liquid accumulator has liquid storage cavity 20, the wall forming liquid storage cavity 20 is at least partially located in head part 1 and tank body part 2, at least part of liquid suction pipe 3 is located in liquid storage cavity 20, head part 1 has outlet channel 102, the pipeline 30 of liquid suction pipe 3 is connected outlet channel 102 with liquid storage cavity 20, liquid suction pipe 3 includes first end 31 and second end 33, in addition, the peripheral wall part 21 and bottom wall part 22 that tank body part 2 includes, along the axial direction of liquid accumulator, bottom wall part 22 is opposite to head part 1, peripheral wall part 21 connects head part 1 and bottom wall part 22, peripheral wall part 21 is substantially cylindrical, of course, it can be hollow prism, hollow rectangle etc., along the radial direction of liquid accumulator, second end 33 is close to the peripheral wall part 21 of tank body part 2 relative to first end 31, the nozzle 301 of second end 33 of liquid suction pipe 3 is towards the peripheral wall part 21 of tank body part 2, the nozzle 301 of second end 33 is the fluid inlet of liquid suction pipe. The pipe section where the second end of liquid suction pipe of liquid accumulator is arranged along gravity direction, and liquid accumulator is placed horizontally, at this time, the second end 33 of liquid suction pipe 3, i.e. the fluid inlet end of liquid suction pipe 3, is as close as possible to the peripheral wall part 21 and opens towards the peripheral wall part 21, which can ensure that when there is a small amount of liquid refrigerant in the liquid storage cavity of the liquid accumulator, i.e. when there is a small amount of liquid refrigerant in the liquid storage cavity near the peripheral wall part 21 directly opposite the nozzle 301, the nozzle 301 can be below the liquid level, so that the liquid refrigerant can flow out along the liquid suction pipe and the outlet channel smoothly, improving the effective volume of the liquid accumulator and the filling capacity of the horizontally arranged liquid accumulator. In addition, since the second end 33 of the liquid suction pipe 3 is in a suspended state after the above arrangement, it is necessary to fix and stabilize the liquid suction pipe 3 and the head part 1. Preferably, the first end 31 of the liquid suction pipe 3 includes a first limiting part 311 and a second limiting part 312, which are protrudingly arranged along the radial direction of the liquid suction pipe 3. The first limiting part 311 can abut and limit the head part 1 axially along the first end 31, and the second limiting part 312 can abut and limit the head part 1 circumferentially along the first end 31. That is, when the liquid suction pipe 3 moves axially relative to the head part 1 along the first end 31, the first limiting part 311 can abut the head part 1 to axially limit the liquid suction pipe 3 relative to the head part 1. When the liquid suction pipe 3 rotates circumferentially relative to the head part 1 along the first end 31, the second limiting part 312 can abut the head part 1 to circumferentially limit the liquid suction pipe 3 relative to the head part 1. Compared with the structure of the conventional liquid accumulator, in which the baffle and the head are combined to fix the drainage pipe, the structure of the liquid suction pipe and the connection method with the head part are changed in the present embodiment, so that one end of the liquid suction pipe can be stably connected with the head part through axial limitation of the first limiting part and circumferential limitation of the second limiting part, and the direction of the nozzle of the liquid suction pipe is no longer limited to pointing to the bottom wall part of the liquid accumulator, thereby breaking through the limitation of the installation direction of the liquid accumulator.

[0016] Further, in order to connect the pipette 3 and the head part 1 stably, referring to Figure 1 and Figure 2 , the head part 1 comprises an interface part 11, the interface part 11 has an interface cavity 100, the first end part 31 of the pipette 3 comprises a first limiting part 311, a second limiting part 312 and a connecting part 313, the second limiting part 312 is closer to the nozzle 301 of the first end part 31 of the pipette 3 than the first limiting part 311, the connecting part 313 connects the first limiting part 311 and the second limiting part 312, the connecting part 313 is at least partially located in the interface cavity 100, the connecting part 313 is connected with the inner circumferential wall forming the interface cavity 100, the connecting mode of transition fit is adopted in the embodiment to ensure that the pipette 3 does not shake in the radial direction with the interface part 11, the interface part 11 comprises a first interface end part 111 and a second interface end part 112, the two end parts are arranged along the axis direction of the interface cavity 100, the interface cavity 100 has an opening towards the liquid storage cavity 20, the first interface end part 111 is located at the wall forming the opening, the interface cavity 100 has an opening towards the outlet channel 102, the second interface end part 112 is located at the wall forming the opening, along the axis direction of the interface cavity 100, the first limiting part 311 can abut against and limit the first interface end part 111 of the interface part 11, the second limiting part 312 can abut against and limit the second interface end part 112 of the interface part 11. By abutting and limiting the two limiting parts against the two end parts of the interface part respectively, the pipette 3 is axially limited relative to the head part 1, in addition, the second limiting part 312 also limits the pipette relative to the head part circumferentially, and then the pipette 3 is connected stably with the head part 1.

[0017] Further, in order to ensure the circumferential stability of the pipette 3, referring to Figure 2 and Figure 4 , the interface part 11 has a rotation stopping cavity 130, the rotation stopping cavity 130 is closer to the outlet channel 102 relative to the interface cavity 100, the first limiting part 311 or the second limiting part 312 is at least partially located in the rotation stopping cavity 130, the limiting part located in the rotation stopping cavity 130 comprises a first wall body 312a and a second wall body 312b, the first wall body 312a and the second wall body 312b are arranged along the circumferential direction of the rotation stopping cavity 130, the distance between the first wall body 312a and the central axis of the rotation stopping cavity 130 is smaller than the distance between the second wall body 312b and the central axis of the rotation stopping cavity 130, the second wall body 312b is in abutment with part of the circumferential wall forming the rotation stopping cavity 130. In the embodiment, the rotation stopping cavity 130 is located at the end of the interface cavity 100 close to the outlet channel 102, the second limiting part 312 is at least partially located in the rotation stopping cavity 130, referring to Figure 4 and Figure 5, the cross-sectional area of the second limiting portion 312 is substantially elliptical, the first wall body 312a and the second wall body 312b are both circular arc walls, the first wall body 312a and the second wall body 312b are both expanded in diameter, the outer diameter size R1 of the first wall body 312a and the outer diameter size R2 of the second wall body 312b are both greater than the sum of the inner diameter R0 of the liquid suction pipe and the pipe wall size, so that the first wall body 312a and the second wall body 312b can be as close as possible to the inner circumferential wall of the rotation stopping cavity 130, the outer diameter size R1 of the first wall body 312a is smaller than the outer diameter size R2 of the second wall body 312b, the shape of the inner circumferential wall of the rotation stopping cavity 130 substantially matches the shape of the outer circumferential wall of the second limiting portion 312, the second limiting portion 312 can be circumferentially limited by the inner circumferential wall of the rotation stopping cavity 130, so that the circumferential position of the riveting limiting of the liquid suction pipe 3 is stable, thereby ensuring that the pipe opening of the second end portion 33 of the liquid suction pipe 3 is oriented towards the fixed after the horizontal installation of the liquid reservoir, thereby ensuring that the pipe opening can be as close as possible to the direction of gravity.

[0018] Further, in order to facilitate the manufacture of the first limiting portion 311 and the second limiting portion 312, with reference to Figure 2 and Figure 4 , the first limiting portion 311, the second limiting portion 312 and the connecting portion 313 are integrally structured, the first limiting portion 311 is provided by the outer pipe wall of the connecting section connecting portion protruding in the radial direction of the connecting portion 313, along the axis direction of the connecting portion 313, the first limiting portion 311 circumferentially surrounds one end portion of the connecting section connecting portion, in this embodiment, the first limiting portion 311 is a protruding ring formed by stamping, the second limiting portion 312 is at least partially expanded in diameter by the connecting section connecting portion along the axis direction of the connecting portion 313, the first wall body 312a and the second wall body 312b are located in the second limiting portion 312, the maximum expansion size of the first wall body 312a is smaller than the maximum expansion size of the second wall body 312b, and the first wall body 312a is smoothly connected with the second wall body 312b.

[0019] In addition, in order to facilitate the manufacture of the structure for circumferential limiting, the second limiting portion 312 includes an expansion portion 3121 and a protruding portion 3122, the protruding portion 3122 is formed by riveting and stamping relative to the expansion portion 3121, the protruding portion 3122 protrudes away from the axis direction of the interface cavity 100 from the expansion portion 3121, or in other words, the protruding portion 3122 protrudes radially along the rotation stopping cavity 130 from the expansion portion 3121, the wall forming the rotation stopping cavity 130 includes a first bottom wall 131 having an opening communicating the interface cavity 100 and the rotation stopping cavity 130, along the axis direction of the rotation stopping cavity 130, the protruding portion 3122 can abut against the first bottom wall 131, the interface portion 11 has a limiting groove 140 with an opening oriented towards the rotation stopping cavity 130, the circumferential side wall forming the limiting groove 140 is radially recessed relative to the circumferential side wall forming the rotation stopping cavity 130, the circumferential side wall forming the limiting groove 140 extends along the axis of the rotation stopping cavity 130, and the protruding portion 3122 can abut against the circumferential side wall forming the limiting groove 140 for limiting.

[0020] In the present embodiment, the suction tube 3 is preferably a metal tube, and a first limiting portion 311 is pre-processed on the suction tube 3, which can be formed by a punch forming. The first end portion 31 of the suction tube 3 is inserted into the interface cavity 100 of the closure head 1, so that the first limiting portion 311 can abut against the first interface end portion 111 of the interface portion 11. Then, the suction tube 3 is riveted from the side of the outlet channel 102, and a diameter expansion portion 3121 and a protrusion portion 3122 are formed by the riveting, which abut against the second interface end portion 112 of the interface portion 11. Specifically, the diameter expansion portion 3121 is limited by the circumferential wall of the stop cavity 130, the protrusion portion 3122 is circumferentially limited by the circumferential wall of the limiting groove 140, and the protrusion portion 3122 is axially limited by the first bottom wall 131 located at the second interface end portion 112.

[0021] Further, referring to Figure 2 and Figure 3 , the interface cavity 100 includes a sealing cavity 110 and a transition cavity 120, the sealing cavity 110 is communicated with the liquid storage cavity 20, the first bottom wall 131 has an opening communicated with the transition cavity 120 and the stop cavity 130, the interface portion 11 has a sealing groove circumferentially surrounding the sealing cavity 110, and the opening of the sealing groove faces the sealing cavity 110. The liquid storage device includes a sealing member abutting against the bottom wall of the sealing groove and the outer circumferential wall of the connecting portion 313. The inner diameter of the transition cavity 120 is larger than the inner diameter of the sealing cavity 110, and the inner diameter of the transition cavity 120 is smaller than or equal to the minimum inner diameter of the stop cavity 130. The protrusion portion 3122 is partially located in the transition cavity 120. The transition cavity 120 is beneficial for machining the stop cavity 130 on the closure head, and the second limiting portion 312 is riveted and expanded in diameter from the transition cavity 120 outward. That is, the connecting portion 313 of the second limiting portion 312 on the suction tube 3 is located in the transition cavity 120, so that the middle portion of the protrusion portion 3122 abuts against the first bottom wall 131, rather than the connecting portion. This is beneficial for the riveting and forming of the second limiting portion 312, and is also beneficial for the reliability of the axial abutment of the protrusion portion 3122 and the first bottom wall 131.

[0022] Referring to Figure 6 and Figure 7 , the liquid storage device includes a filter 4 fixedly or limitingly connected with the second end portion 33 of the suction tube 3. The filter 4 has a filter passage communicated with the pipe opening 301 of the suction tube 3 facing the circumferential wall portion 21 of the tank body portion 2. The filter 4 includes a second bottom wall 41 located between the suction tube 3 and the circumferential wall portion 21 of the tank body portion 2 along the axial direction of the pipe opening 301. The projection of the circumferential wall portion 21 of the tank body portion 2 opposite to the pipe opening 301 along the tank body axial direction matches the projection shape of the second bottom wall 41. Preferably, referring to Figure 7, the shape of the second bottom wall 41 comprises an arc-shaped wall, the shape of the circumferential wall part 21 of the can body part 2 opposite the pipe mouth 301 comprises an arc-shaped wall, and the curvatures of the two arc-shaped walls are similar. The filter structure with the arc-shaped bottom wall can better conform to the circumferential wall part 21 of the can body part 2, and can ensure that when a small amount of liquid refrigerant exists in the liquid storage cavity of the liquid accumulator, i.e., when a small amount of liquid refrigerant exists in the liquid storage cavity near the circumferential wall part 21 directly opposite the pipe mouth 301, the pipe mouth 301 can be located below the liquid level, so that the liquid refrigerant can smoothly flow out along the wick and the outlet channel, the effective content of the liquid accumulator is improved, and the filling amount of the horizontally arranged liquid accumulator is improved.

[0023] With reference to Figure 4 and Figure 6 , the wick 3 comprises a bent section 32 connecting a pipe section where the first end part 31 is located and a pipe section where the second end part 33 is located, the pipe section where the first end part 31 is located extends along the axial direction of the can body part 2, and the pipe section where the second end part 33 is located extends along the radial direction of the can body part.

[0024] With reference to Figure 1 and Figure 6 , the head part 1 has an inlet channel 101, the central axis of the inlet channel 101 is parallel to the central axis of the can body part 2, the extension direction of the pipe section where the second end part 33 is located is consistent with the direction of gravity after the liquid accumulator is installed, the inlet channel 101 is arranged eccentrically on the head part 1, the direction in which the center of the hole of the outlet channel 102 points to the center of the hole of the inlet channel 101 is defined as a first direction, and the first direction is opposite to the direction of gravity after the liquid accumulator is installed. In this way, when the liquid accumulator is placed horizontally, the spatial layout of the liquid accumulator can be expanded, and in addition, the performance of the liquid accumulator can be improved by reducing the impact of gaseous refrigerant entering other components of the heat management system from the wick. In addition, the inlet channel 101 is arranged on the head part, and the central axis is parallel to the central axis of the can body part 2. Similarly, the inlet channel 101 is also approximately parallel to the liquid level of the liquid refrigerant in the liquid storage cavity, and the gaseous and liquid refrigerants enter the liquid storage cavity from the inlet channel. This can alleviate the impact on the liquid refrigerant stored in the liquid storage cavity. Compared with the conventional liquid accumulator, the inlet of the liquid accumulator is nearly opposite to the liquid level of the liquid refrigerant, and directly flows downward to generate a large impact force. In the embodiment, the liquid refrigerant in the liquid storage cavity is not significantly stirred under the action of a small impact, the liquid refrigerant tends to be in a steady flow state, the liquid accumulator returns liquid stably, and the stability of system operation can be improved.

[0025] It should be noted that: the above technical solutions are only used to illustrate the utility model and are not limited to the technical solutions described in the utility model. Although the utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the skilled in the art can still modify or equivalently replace the utility model, and all technical solutions and improvements that do not deviate from the spirit and scope of the utility model should be covered within the protection scope of the technical solutions of the present application.

Claims

1. A reservoir characterized by, The storage tank comprises a cover part (1), a tank body part (2) and a liquid suction pipe (3). The cover part (1) is located on one side of the tank body part (2) along the axial direction of the storage tank. The cover part (1) is fixedly connected with the tank body part (2). The storage tank has a liquid storage cavity (20). The wall forming the liquid storage cavity (20) is at least partially located in the cover part (1) and the tank body part (2). At least part of the liquid suction pipe (3) is located in the liquid storage cavity (20). The cover part (1) has an outlet channel (102). The pipeline (30) of the liquid suction pipe (3) communicates the outlet channel (102) with the liquid storage cavity (20). The liquid suction pipe (3) comprises a first end part (31) and a second end part (33). The first end part (31) of the liquid suction pipe (3) comprises a first limiting part (311) and a second limiting part (312). The first limiting part (311) and the second limiting part (312) are arranged to protrude along the radial direction of the liquid suction pipe (3). The first limiting part (311) can abut and limit the cover part (1) along the axial direction of the first end part (31). The second limiting part (312) can abut and limit the cover part (1) along the circumferential direction of the first end part (31). Along the radial direction of the storage tank, the second end part (33) is close to the circumferential wall part (21) of the tank body part (2) relative to the first end part (31). The nozzle (301) of the second end part (33) of the liquid suction pipe (3) faces the circumferential wall part (21) of the tank body part (2).

2. The reservoir of claim 1, wherein, The cover part (1) comprises an interface part (11) having an interface cavity (100). The second limiting part (312) is closer to the nozzle of the first end part (31) of the liquid suction pipe (3) than the first limiting part (311). The first end part (31) of the liquid suction pipe (3) comprises a connecting part (313) connecting the first limiting part (311) and the second limiting part (312). The connecting part (313) is at least partially located in the interface cavity (100). Along the axial direction of the interface cavity (100), the first limiting part (311) can abut and limit one end of the interface part (11). The second limiting part (312) can abut and limit the other end of the interface part (11).

3. The reservoir of claim 2, wherein, The interface part (11) has a rotation-stopping cavity (130). The second limiting part (312) is at least partially located in the rotation-stopping cavity (130). The second limiting part (312) comprises a first wall body (312a) and a second wall body (312b). The first wall body (312a) and the second wall body (312b) are arranged along the circumferential direction of the rotation-stopping cavity (130). The distance between the first wall body (312a) and the central axis of the rotation-stopping cavity (130) is smaller than the distance between the second wall body (312b) and the central axis of the rotation-stopping cavity (130). The second wall body (312b) is in contact with part of the circumferential side wall forming the rotation-stopping cavity (130). ​ 4. The reservoir of claim 3, wherein, The first limiting part (311), the second limiting part (312) and the connecting part (313) are integrated structures, the first limiting part (311) is arranged protruding along the radial direction of the connecting part (313) by the outer pipe wall of the connecting part, along the axis direction of the connecting part (313), the first limiting part (311) circumferentially surrounds one end of the connecting part, the second limiting part (312) is at least partially formed by the connecting part expanding in diameter along the axis direction of the connecting part (313), the first wall body (312a) and the second wall body (312b) are located in the second limiting part (312), and the maximum diameter expansion size of the first wall body (312a) is smaller than that of the second wall body (312b).

5. The reservoir of claim 4, wherein, The second limiting part (312) comprises a diameter expansion part (3121) and a protruding part (3122), the protruding part (3122) is formed by riveting and pressing relative to the diameter expansion part (3121), the protruding part (3122) protrudes radially from the diameter expansion part (3121) along the rotation stopping cavity (130), the wall forming the rotation stopping cavity (130) comprises a first bottom wall (131), along the axis direction of the rotation stopping cavity (130), the protruding part (3122) can abut against the first bottom wall (131), the interface part (11) has a limiting groove (140) with an opening facing the rotation stopping cavity (130), the circumferential side wall forming the limiting groove (140) is recessed radially relative to the circumferential side wall forming the rotation stopping cavity (130), the circumferential side wall forming the limiting groove (140) extends along the axis of the rotation stopping cavity (130), and the protruding part (3122) can abut against the circumferential side wall forming the limiting groove (140) to limit.

6. The reservoir of claim 5, wherein, The interface cavity (100) comprises a sealing cavity (110) and a transition cavity (120), the transition cavity (120) is close to the rotation stopping cavity (130) relative to the sealing cavity (110), the inner diameter size of the transition cavity (120) is greater than that of the sealing cavity (110), the inner diameter size of the transition cavity (120) is less than or equal to the minimum inner diameter size of the rotation stopping cavity (130), and the protruding part (3122) is partially located in the transition cavity (120).

7. The reservoir of any of claims 1-6, wherein, The liquid reservoir comprises a filter (4) fixedly connected or limitingly connected with the second end part (33), the filter (4) has a filtering channel, the filtering channel communicates with a pipe opening (301) of the liquid suction pipe (3) facing the circumferential wall part (21) of the tank body part (2), the filter (4) comprises a second bottom wall (41), along the axis direction of the pipe opening (301), the second bottom wall (41) is located between the liquid suction pipe (3) and the circumferential wall part (21) of the tank body part (2), and along the tank body axis direction, the projection of the circumferential wall part (21) of the tank body part (2) opposite to the pipe opening (301) on the cover head part (1) matches the projection shape of the second bottom wall (41) on the cover head part (1).

8. The reservoir of claim 7, wherein, The shape of the second bottom wall (41) comprises an arc-shaped wall, and the shape of the circumferential wall portion (21) of the can body portion (2) opposite to the pipe mouth (301) comprises an arc-shaped wall, and the curvatures of the two arc-shaped walls are similar.

9. The reservoir of any of claims 1-8, wherein, The liquid suction pipe (3) comprises a bending section (32) connecting a pipe section where the first end portion (31) is located and a pipe section where the second end portion (33) is located, the pipe section where the first end portion (31) is located extends along the axial direction of the can body portion (2), and the pipe section where the second end portion (33) is located extends along the radial direction of the can body.

10. The reservoir of claim 9, wherein, The cover portion (1) has an inlet channel (101), the central axis of the inlet channel (101) is parallel to the central axis of the can body portion (2), the extension direction of the pipe section where the second end portion (33) is located is consistent with the direction of gravity after the installation of the liquid reservoir is completed, the inlet channel (101) is eccentrically arranged on the cover portion (1), the direction in which the center of the aperture of the outlet channel (102) is pointed to the center of the aperture of the inlet channel (101) is a first direction, and the first direction is opposite to the direction of gravity after the installation of the liquid reservoir is completed.

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