Liquid accumulator for air conditioning equipment

Abstract

The invention discloses a liquid storage device for air conditioning equipment, and belongs to the field of air conditioner liquid storage devices. The liquid storage device for the air conditioning equipment comprises a tank body and an inlet pipe arranged at the top of the tank body, a gas-liquid separation assembly, a drying assembly and a filtering assembly are sequentially arranged in the tank body and located below the inlet pipe, and the drying assembly and the filtering assembly are detachably and integrally arranged at the bottom of the tank body; the gas-liquid separation assembly receives a refrigerant from the inlet pipe and enables the refrigerant to diffuse and splash, the drying assembly comprises a drying chamber located below the gas-liquid separation assembly, the filtering assembly comprises a filtering chamber located below the drying chamber, and a communicating pipe is arranged between the drying chamber and the filtering chamber, so that the liquid refrigerant can sequentially flow through the drying chamber and the filtering chamber. The drying assembly and the filtering assembly are detachably installed at the bottom of the tank body in an integrated modular mode, a drying agent and a filter screen can be independently replaced or maintained without replacing the whole liquid storage device, operation is easy and convenient, and the later maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of air conditioning liquid receivers, and particularly to a liquid receiver for air conditioning equipment. Background Technology

[0002] The receiver-drier is a crucial component of the compressor in a refrigeration system. Its function is to store liquid refrigerant, primarily used in air conditioning and automotive refrigeration to ensure a stable refrigerant supply during system operation. In automotive air conditioning systems, a receiver-drier is typically used. This receiver-drier incorporates a desiccant layer and a filter, simultaneously serving the functions of liquid storage, drying, and filtration, ensuring smooth refrigeration circulation and stable system operation.

[0003] Currently, most liquid receiver dryers on the market use a traditional integrated structure, where the desiccant gradually absorbs moisture and impurities until it becomes saturated over time. Once the desiccant's moisture absorption capacity reaches its limit or the filter structure becomes clogged, maintenance may require replacing the entire liquid receiver unit, increasing maintenance costs in practical applications. Summary of the Invention

[0004] This invention provides a liquid receiver for air conditioning equipment, which can solve the problem that existing liquid receivers for air conditioning equipment use a traditional integrated structure, which may require replacing the entire liquid receiver unit during maintenance, increasing maintenance costs in practical applications.

[0005] A liquid storage tank for air conditioning equipment includes a tank body and an inlet pipe located at the top of the tank body. Inside the tank body and below the inlet pipe, a gas-liquid separation component, a drying component, and a filter component are sequentially arranged. The drying component and the filter component are detachably integrated at the bottom of the tank body. The gas-liquid separation assembly receives refrigerant from the inlet pipe and diffuses and splashes it. The drying assembly includes a drying chamber located below the gas-liquid separation assembly. The filtration assembly includes a filtration chamber located below the drying chamber. A connecting pipe is provided between the drying chamber and the filtration chamber, allowing liquid refrigerant to flow sequentially through the drying chamber and the filtration chamber. A liquid storage chamber is provided inside the tank and above the gas-liquid separation assembly. The upper part of the filtration chamber is connected to the liquid storage chamber, allowing the filtered liquid refrigerant to overflow into the liquid storage chamber.

[0006] Preferably, the gas-liquid separation assembly includes an umbrella plate fixed to the inner wall of the tank and a liquid guide plate fixed to the inner wall of the tank. An annular gap is provided between the umbrella plate and the inner wall of the tank. The liquid guide plate is a flanged circular ring structure and is located below the umbrella plate. The inlet pipe extends to the conical top of the umbrella plate.

[0007] Preferably, the drying assembly further includes an upper cylinder seat fitted inside the tank body, the upper cylinder seat having a hollow structure to form a drying chamber, the drying chamber containing a desiccant, the connecting pipe being fixed in the middle of the upper cylinder seat, and the connecting pipe having a plurality of first overflow ports on the side near the top.

[0008] Preferably, the drying assembly further includes a mesh plate fixed on the upper cylinder base, with a storage chamber formed between the side of the mesh plate and the connecting pipe, the desiccant filling the storage chamber, and a cover plate covering the top of the storage chamber.

[0009] Preferably, the filter assembly further includes a lower cylinder seat fitted at the bottom of the tank, the lower cylinder seat having a hollow structure to form a filter chamber, the bottom end of the connecting pipe abutting against the bottom wall of the lower cylinder seat, and the connecting pipe having multiple liquid outlets on the side near the bottom, and a filter screen fitted between the side of the lower cylinder seat and the connecting pipe.

[0010] Preferably, the tank sidewall has an annular flow cavity inside, and the tank sidewall, on the side above the filter screen and on the side near the bottom of the liquid storage chamber, has multiple second overflow ports, all of which communicate with the flow cavity.

[0011] Preferably, a baffle is fixed on the inner wall of the tank and below the upper second overflow port, forming a liquid storage chamber between the baffle and the top of the tank. An outlet pipe and a balance pipe are fixed on the top of the tank, and both the inlet pipe and the balance pipe are fixed on the baffle.

[0012] Preferably, a first discharge pipe and a second discharge pipe are fixedly provided on the lower cylinder seat, the second discharge pipe is connected to the filter chamber, the first discharge pipe is connected to the drying chamber, and a liquid injection pipe is fixedly provided on the inlet pipe.

[0013] Preferably, the lower cylinder seat is fitted with a plurality of first sealing rings on its side, and the lower cylinder seat is fixed to the bottom of the tank by bolts.

[0014] Preferably, a sound insulation layer is fixed to the outer surface of the tank, the bottom of the partition, and the bottom of the lower cylinder seat.

[0015] This invention provides a liquid receiver for air conditioning equipment, which has the following beneficial effects: 1. The drying and filtering components are detachably installed at the bottom of the tank in an integrated modular form. When maintaining the drying and filtering components, first open the first and second discharge pipes and valves to discharge the refrigerant from the drying and filtering chambers. Remove the lower cylinder seat, pull it out of the tank and separate it from the connecting pipe to remove the filter screen for maintenance. Then, pull out the connecting pipe to separate the upper cylinder seat from the liquid guide plate, and remove the cover to replace the desiccant. When the desiccant fails or the filter screen becomes clogged, it is not necessary to replace the entire liquid receiver. The drying and filtering component modules at the bottom of the tank can be removed to individually replace or maintain the desiccant and filter screen, simplifying the operation and reducing subsequent maintenance costs.

[0016] 2. The tank is equipped with a gas-liquid separation component, a drying component, and a filtration component from top to bottom. The refrigerant undergoes initial gas-liquid separation through the liquid separation component. The separated liquid then flows through the drying chamber and the filtration chamber, where moisture is adsorbed and impurities are removed, respectively, thereby improving the purity of the refrigerant and ensuring its quality and reliability. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a liquid receiver for air conditioning equipment provided by the present invention. Figure 1 ; Figure 2 A schematic diagram of the structure of a liquid receiver for air conditioning equipment provided by the present invention. Figure 2 ; Figure 3 A cross-sectional structural schematic diagram of a liquid receiver for air conditioning equipment provided by the present invention; Figure 4 The present invention provides a liquid receiver for air conditioning equipment. Figure 2 Front view structural diagram; Figure 5 The present invention provides a liquid receiver for air conditioning equipment. Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 A schematic diagram of the internal cross-sectional structure of a liquid storage tank for air conditioning equipment provided by the present invention; Figure 7 This invention provides a schematic diagram of the disassembled structure of the upper and lower cylinder seats of a liquid receiver for air conditioning equipment; Figure 8 This is a front sectional view of the upper and lower cylinder seats of a liquid receiver for an air conditioning device provided by the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Tank body; 2. Inlet pipe; 3. Outlet pipe; 4. Balance pipe; 5. Umbrella plate; 6. Liquid guide plate; 7. Bolt; 8. Drying chamber; 9. Mesh plate; 10. Storage chamber; 11. Cover plate; 12. Connecting pipe; 13. First overflow port; 14. Liquid outlet; 15. Lower cylinder seat; 16. Filter chamber; 17. Filter screen; 18. Upper cylinder seat; 19. Flow chamber; 20. Second overflow port; 21. Baffle plate; 22. Liquid storage chamber; 23. First discharge pipe; 24. Second discharge pipe; 25. Injection pipe; 26. First sealing ring; 27. Fixing ring; 28. Second sealing ring; 29. ​​Sound insulation layer; 30. Through hole. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] like Figures 1 to 8 As shown in the figure, an embodiment of the present invention provides a liquid receiver for an air conditioning device, including a tank body 1 and an inlet pipe 2 located at the top of the tank body 1. Inside the tank body 1 and below the inlet pipe 2, a gas-liquid separation component, a drying component, and a filter component are arranged in sequence. The drying component and the filter component are detachably integrated at the bottom of the tank body 1. The gas-liquid separation component receives the refrigerant from the inlet pipe 2 and causes it to diffuse and splash. The drying component includes a drying chamber 8 located below the gas-liquid separation component. The filter component includes a filter chamber 16 located below the drying chamber 8. A connecting pipe 12 is provided between the drying chamber 8 and the filter chamber 16, so that the liquid refrigerant can flow through the drying chamber 8 and the filter chamber 16 in sequence. Inside the tank body 1 and above the gas-liquid separation component, a liquid receiver 22 is provided. The upper part of the filter chamber 16 is connected to the liquid receiver 22, so that the filtered liquid refrigerant overflows into the liquid receiver 22.

[0021] The refrigerant is sprayed vertically downwards from the inlet pipe 2, impacting the gas-liquid separation component and causing it to spread and splash. The droplets are separated by gravity and inertia and flow down the inner wall of the tank 1, while the separated gas rises to the top of the tank 1. The liquid refrigerant flowing down the wall enters the drying chamber 8 to adsorb moisture. The dried liquid flows through the connecting pipe 12 into the lower filter chamber 16 to filter out impurities in the refrigerant. The filtered pure liquid refrigerant accumulates in the filter chamber 16 and overflows through the overflow port into the upper liquid storage chamber 22 for storage and supply to the system.

[0022] The interior of tank 1 contains, from top to bottom, a gas-liquid separation assembly, a drying assembly, and a filtration assembly. The drying and filtration assemblies are detachably installed at the bottom of tank 1 in an integrated modular form. When the desiccant fails or the filter becomes clogged, it is not necessary to replace the entire liquid reservoir. Simply shut down the system and remove the drying and filtration assembly modules at the bottom of tank 1 to replace or maintain the desiccant and filter individually. This simple operation reduces subsequent maintenance costs.

[0023] In some specific implementation plans, such as Figure 3 , Figure 4 and Figure 6 As shown, the gas-liquid separation assembly includes an umbrella-shaped plate 5 fixed to the inner wall of the tank 1 and a liquid guide plate 6 fixed to the inner wall of the tank 1. An annular gap is provided between the umbrella-shaped plate 5 and the inner wall of the tank 1. The umbrella-shaped plate 5 has a raised or recessed structure near the top of its conical shape to promote liquid splashing and diffusion. The liquid guide plate 6 is a flanged circular ring structure located below the umbrella-shaped plate 5, and the inlet pipe 2 extends to the top of the conical shape of the umbrella-shaped plate 5. The liquid guide plate 6 has a flanged top and a circular ring structure at the bottom. The liquid guide plate 6 is fixed to the inner wall of the tank 1 by the flanged edge, and there is a gap between the circular ring structure on it and the tank wall.

[0024] Refrigerant from the condenser is discharged vertically downwards through inlet pipe 2 and impacts the umbrella plate 5. The droplets are broken and splashed by the impact force and the raised / dimpled structure of the surface. Under gravity, the liquid refrigerant flows along the surface of the umbrella plate 5 towards the edge. As it flows down, it collides again with the tank wall, which enhances the gas separation effect. The refrigerant is received by the annular structure of the liquid guide plate 6 and guided into the drying chamber 8 for further processing, while the separated gas rises and collects above the refrigerant.

[0025] In some specific implementation plans, such as Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the drying assembly also includes an upper cylinder seat 18 fitted inside the tank body 1 and a mesh plate 9 fixed on the upper cylinder seat 18. The upper cylinder seat 18 has a hollow structure to form a drying chamber 8, which contains desiccant. A connecting pipe 12 is fixed in the middle of the upper cylinder seat 18, and the connecting pipe 12 has multiple first overflow ports 13 on its side near the top. The side of the upper cylinder seat 18 is inserted into the gap between the annular structure of the liquid guide plate 6 and the tank wall, and the height of the first overflow ports 13 is lower than the top of the upper cylinder seat 18, so that the refrigerant inside the drying chamber 8 will not overflow to the bottom through the connection between the upper cylinder seat 18 and the liquid guide plate 6. A storage chamber 10 is formed between the side of the mesh plate 9 and the connecting pipe 12, and the desiccant is filled inside the storage chamber 10. The top of the storage chamber 10 is covered by a cover plate 11. The bottom of the cover plate 11 has a protruding edge that slides against the outer wall of the connecting pipe 12 and the inner wall of the mesh plate 9 to achieve an interference fit connection structure. The cover plate 11 can be easily installed and removed.

[0026] The liquid refrigerant, after gas-liquid separation, flows into the drying chamber 8 through the liquid guide plate 6. The refrigerant then flows through the storage chamber 10 filled with desiccant for further drying. The dried refrigerant accumulates in the drying chamber 8, and the liquid level gradually rises. When the liquid level exceeds the height of the first overflow port 13, the dried liquid flows through these overflow ports into the connecting pipe 12, and then into the filter assembly below for further processing.

[0027] In some specific implementation plans, such as Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the filter assembly also includes a lower cylinder seat 15 fitted at the bottom of the tank body 1. The lower cylinder seat 15 has a hollow structure to form a filter chamber 16. The bottom end of the connecting pipe 12 abuts against the bottom wall of the lower cylinder seat 15, and the connecting pipe 12 has multiple liquid outlets 14 on the side near the bottom. A filter screen 17 is fitted between the side of the lower cylinder seat 15 and the connecting pipe 12, and the filter screen 17 is tightly fitted between the side of the lower cylinder seat 15 and the connecting pipe 12. An annular flow cavity 19 is opened inside the side wall of the tank body 1. Multiple second overflow ports 20 are opened on the side of the side wall of the tank body 1 above the filter screen 17 and on the side near the bottom of the liquid storage chamber 22. The second overflow ports 20 are all connected to the flow cavity 19. The lower second overflow port 20 is basically flush with the top of the filter screen 17.

[0028] Liquid refrigerant from the drying chamber 8 enters the bottom of the filter chamber 16 through the liquid outlet 14 at the bottom of the connecting pipe 12. The liquid then permeates upwards through the filter screen 17. During this process, the refrigerant is filtered by the filter screen 17. As the filtered refrigerant accumulates in the filter chamber 16, its liquid level gradually rises. When the liquid level exceeds the top of the filter screen 17, the refrigerant enters the annular flow chamber 19 through the lower second overflow port 20. The liquid flows upwards in the flow chamber 19 and finally overflows through the upper second overflow port 20, storing in the liquid storage chamber 22 for later use.

[0029] In some specific implementation plans, such as Figure 3 and Figure 4 As shown, a baffle 21 is fixed on the inner wall of the tank 1 and below the upper second overflow port 20. A liquid storage chamber 22 is formed between the baffle 21 and the top of the tank 1. An outlet pipe 3 and a balance pipe 4 are fixed on the top of the tank 1. The outlet pipe 3 extends to the bottom of the liquid storage chamber 22. The inlet pipe 2 and the balance pipe 4 are both fixed on the baffle 21. The bottom end of the balance pipe 4 extends to the gas-liquid separation component.

[0030] The pure liquid refrigerant is stored inside the liquid storage chamber 22. At the same time, the gas separated during the gas-liquid separation process gathers above the liquid refrigerant in the tank 1 and is introduced through the bottom opening of the balance pipe 4, and then transported upward to the external compressor through the balance pipe 4.

[0031] In some specific implementation plans, such as Figure 5 , Figure 7 and Figure 8 As shown, the lower cylinder seat 15 is fitted with multiple first sealing rings 26 on its side. The lower cylinder seat 15 is fixed to the bottom of the tank body 1 by bolts 7. In order to improve the sealing effect, a sealing gasket is provided between the flange of the lower cylinder seat 15 and the bottom of the tank body 1.

[0032] The lower cylinder seat 15 is fitted inside the tank body 1. The first sealing ring 26 is compressed and deformed to seal the connection between the lower cylinder seat 15 and the tank wall, thereby ensuring the airtightness of the filter chamber 16. Moreover, the lower cylinder seat 15 can be disassembled and assembled by simply operating the bolts 7. The connection is stable and the disassembly and assembly are simple, which facilitates the maintenance of the internal desiccant and filter screen 17.

[0033] In some specific implementation plans, such as Figure 1 , Figure 4 and Figure 5 As shown, a first discharge pipe 23 and a second discharge pipe 24 are fixedly mounted on the lower cylinder seat 15. Valves are installed on the first discharge pipe 23 and the second discharge pipe 24 to control their opening and closing. The second discharge pipe 24 communicates with the filter chamber 16, and the first discharge pipe 23 communicates with the drying chamber 8. A liquid injection pipe 25 is fixedly mounted on the inlet pipe 2 for refrigerant charging. The first discharge pipe 23 passes through the filter screen 17 and the upper cylinder seat 18, and a fixing ring 27 is fixed on the first discharge pipe 23. A second sealing ring 28 is provided on the top of the fixing ring 27 to seal the connection between the first discharge pipe 23 and the upper cylinder seat 18. The filter screen 17 has a through hole 30 to facilitate the insertion of the fixing ring 27.

[0034] When disassembling the lower cylinder seat 15, the air conditioner is turned off. The operating valve controls the opening of the first discharge pipe 23 and the second discharge pipe 24 to facilitate the discharge of refrigerant from the drying chamber 8 and the filter chamber 16, thereby improving the safety and convenience of maintenance operations. When the upper cylinder seat 18 and the lower cylinder seat 15 are reinstalled into the tank body 1, the first discharge pipe 23 is inserted into the upper cylinder seat 18. The second sealing ring 28 on the fixing ring 27 is compressed and deformed to seal the insertion point of the first discharge pipe 23, ensuring the sealing of the drying chamber 8.

[0035] In some specific implementation plans, such as Figure 1 and Figure 2 As shown, in order to reduce the internal operating noise of the liquid storage tank, sound insulation layers 29 are fixed on the outer surface of the tank body 1, the bottom of the partition 21 and the bottom of the lower cylinder seat 15.

[0036] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios: The refrigerant is sprayed vertically downwards from the inlet pipe 2, impacting the gas-liquid separation component and causing it to spread and splash. The droplets are separated by gravity and inertia and flow down the inner wall of the tank 1, while the separated gas rises to the top of the tank 1. The liquid refrigerant flowing down the wall enters the drying chamber 8 to adsorb moisture. The dried liquid flows through the connecting pipe 12 into the lower filter chamber 16 to filter out impurities in the refrigerant. The filtered pure liquid refrigerant accumulates in the filter chamber 16 and overflows through the overflow port into the upper liquid storage chamber 22 for storage and supply to the system.

[0037] When maintenance of the drying and filtering components is required, operate the valves to open the first discharge pipe 23 and the second discharge pipe 24 to discharge the refrigerant from the drying chamber 8 and the filtering chamber 16. Remove bolt 7 to remove the lower cylinder seat 15. The lower cylinder seat 15 is pulled out from inside the tank 1 and separated from the connecting pipe 12, allowing the filter screen 17 to be removed from inside the filtering chamber 16 for maintenance. Then, operate the connecting pipe 12 to pull out the upper cylinder seat 18 from inside the tank 1. The upper cylinder seat 18 is separated from the liquid guide plate 6, and the cover plate 11 can be removed to replace the desiccant.

[0038] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A liquid storage tank for an air conditioning device, comprising a tank (1) and an inlet pipe (2) disposed at the top of the tank (1), characterized in that, Inside the tank (1) and below the inlet pipe (2), a gas-liquid separation component, a drying component and a filter component are arranged in sequence. The drying component and the filter component are detachably integrated at the bottom of the tank (1). The gas-liquid separation assembly receives the refrigerant from the inlet pipe (2) and causes it to spread and splash. The drying assembly includes a drying chamber (8) located below the gas-liquid separation assembly. The filtering assembly includes a filtering chamber (16) located below the drying chamber (8). A connecting pipe (12) is provided between the drying chamber (8) and the filtering chamber (16) so that the liquid refrigerant can flow through the drying chamber (8) and the filtering chamber (16) in sequence. A liquid storage chamber (22) is provided inside the tank (1) and above the gas-liquid separation assembly. The upper part of the filtering chamber (16) is connected to the liquid storage chamber (22) so that the filtered liquid refrigerant overflows into the liquid storage chamber (22).

2. The liquid receiver for air conditioning equipment as described in claim 1, characterized in that, The gas-liquid separation assembly includes an umbrella plate (5) fixed on the inner wall of the tank (1) and a liquid guide plate (6) fixed on the inner wall of the tank (1). An annular gap is provided between the umbrella plate (5) and the inner wall of the tank (1). The liquid guide plate (6) is a flanged circular ring structure and is located below the umbrella plate (5). The inlet pipe (2) extends to the conical top of the umbrella plate (5).

3. A liquid receiver for air conditioning equipment as described in claim 1, characterized in that, The drying assembly also includes an upper cylinder seat (18) fitted inside the tank (1). The upper cylinder seat (18) has a hollow structure to form a drying chamber (8). The drying chamber (8) contains a desiccant. The connecting pipe (12) is fixed in the middle of the upper cylinder seat (18). The connecting pipe (12) has multiple first overflow ports (13) on the side near the top.

4. A liquid receiver for air conditioning equipment as described in claim 3, characterized in that, The drying assembly also includes a mesh plate (9) fixed on the upper cylinder seat (18), and a storage chamber (10) is formed between the side of the mesh plate (9) and the connecting pipe (12). The desiccant is filled inside the storage chamber (10), and a cover plate (11) is closed on the top of the storage chamber (10).

5. A liquid receiver for air conditioning equipment as described in claim 3, characterized in that, The filter assembly also includes a lower cylinder seat (15) fitted at the bottom of the tank (1). The lower cylinder seat (15) has a hollow structure inside to form a filter chamber (16). The bottom end of the connecting pipe (12) abuts against the bottom wall of the lower cylinder seat (15). The connecting pipe (12) has multiple liquid outlets (14) on the side near the bottom. A filter screen (17) is fitted between the side of the lower cylinder seat (15) and the connecting pipe (12).

6. A liquid receiver for air conditioning equipment as described in claim 5, characterized in that, The tank (1) has an annular flow cavity (19) inside its side wall. Multiple second overflow ports (20) are provided on the side wall of the tank (1) above the filter screen (17) and on the side near the bottom of the liquid storage chamber (22). The second overflow ports (20) are all connected to the flow cavity (19).

7. A liquid receiver for air conditioning equipment as described in claim 1, characterized in that, A baffle (21) is fixed on the inner wall of the tank (1) and below the upper second overflow port (20). A liquid storage chamber (22) is formed between the baffle (21) and the top of the tank (1). An outlet pipe (3) and a balance pipe (4) are fixed on the top of the tank (1). The inlet pipe (2) and the balance pipe (4) are both fixed on the baffle (21).

8. A liquid receiver for an air conditioning system as described in claim 5, characterized in that, The lower cylinder seat (15) is fixedly provided with a first discharge pipe (23) and a second discharge pipe (24). The second discharge pipe (24) is connected to the filter chamber (16), and the first discharge pipe (23) is connected to the drying chamber (8). The inlet pipe (2) is fixedly provided with a liquid injection pipe (25).

9. A liquid receiver for an air conditioning system as described in claim 8, characterized in that, The lower cylinder seat (15) is fitted with multiple first sealing rings (26) on its side, and the lower cylinder seat (15) is fixed to the bottom of the tank body (1) by bolts (7).

10. A liquid receiver for an air conditioning system as described in claim 7, characterized in that, Sound insulation layers (29) are fixed on the outer surface of the tank (1), the bottom of the partition (21) and the bottom of the lower cylinder seat (15).

Images