A reservoir

Abstract

This application discloses a liquid receiver, including a receiver body and an inlet pipe. The receiver body has an inner cavity, and the inlet pipe is inserted into the inner cavity from the side of the receiver body. The end of the inlet pipe is closed, and at least one outlet hole is provided on the side wall of the inlet pipe located in the inner cavity. When in use, this liquid receiver prevents the refrigerant flowing out of the outlet hole of the inlet pipe from directly impacting the inner wall of the receiver, thus relatively reducing the amount of refrigerant in contact with the inner wall. This reduces the influence of outdoor ambient temperature on the refrigerant state, thereby lowering the risk of vaporization of the liquid refrigerant inside the receiver.

Description

Technical Field

[0001] This application relates to the field of refrigeration and heating systems, specifically to a liquid storage tank. Background Technology

[0002] A liquid receiver is typically installed between the condenser and the throttling device to store the refrigerant liquid discharged from the condenser and to regulate the refrigerant liquid supply and demand relationship between the condenser and the evaporator, so as to ensure that the refrigerant entering the throttling device is in liquid form.

[0003] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a liquid storage tank in related technologies. Figure 2 for Figure 1 The diagram shows the structure of the inlet pipe in the reservoir. Figure 3 For refrigerant to enter Figure 1 The diagram shows the flow path within the reservoir. Figure 3 In the diagram, the arrows indicate the direction of refrigerant flow in the liquid inlet pipe 02, the dashed lines represent the flow path of the gas-liquid two-phase refrigerant, the dashed lines represent the flow path of the gaseous refrigerant, and the dots represent the flow path of the liquid refrigerant in the side wall area of ​​the casing.

[0004] In related technologies, liquid reservoirs include, for example... Figure 1 The diagram shows a housing 01, an inlet pipe 02, and a suction pipe 03. The housing 01 forms a cavity. The inlet pipe 02 enters the cavity from the side of the housing 01, and the suction pipe 03 exits the cavity from the bottom upwards and towards the side of the housing 01. In use, the refrigerant discharged from the condenser enters the cavity of the receiver through the inlet pipe 02 and then sinks to the bottom of the cavity for storage. When the refrigerant supply and demand in the system reach equilibrium, the suction pipe 03 draws liquid refrigerant from the bottom of the cavity and sends it to the throttling device.

[0005] Among them, the inlet pipe 02 is usually as follows Figure 2 The straight pipe structure shown has its outlet end directly facing the side wall of the cavity, as... Figure 3 As shown, since the refrigerant flow rate entering the liquid inlet pipe 02 is often high, the high-velocity refrigerant has a very high probability of directly impacting the opposite side wall after entering the cavity through the liquid inlet pipe 02. The refrigerant in contact with the side wall of the casing adheres to the wall or accumulates near the side wall and slowly sinks. The refrigerant in the side wall area of ​​the casing is greatly affected by the outdoor ambient temperature. When the condensation temperature is lower than the outdoor ambient temperature, the temperature of the side wall of the casing is higher than the refrigerant temperature. This temperature difference poses a risk of vaporization of the liquid refrigerant.

[0006] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects remains a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] The purpose of this application is to provide a liquid receiver so that the refrigerant flowing out from the inlet pipe does not directly impact the inner wall of the liquid receiver, thereby reducing the influence of outdoor ambient temperature on the refrigerant state.

[0008] To solve the above-mentioned technical problems, this application provides a liquid reservoir, which includes a liquid reservoir body and an inlet pipe;

[0009] The reservoir body has an inner cavity, and the inlet pipe is inserted into the inner cavity from the side of the reservoir body. The end of the inlet pipe is closed, and at least one outlet hole is provided on the side wall of the inlet pipe located in the inner cavity.

[0010] The liquid receiver provided in this application inserts an inlet pipe into the inner cavity of the liquid receiver body from the side, and seals the end of the inlet pipe. A liquid outlet hole is provided on the side wall of the inlet pipe located in the inner cavity. During use, the refrigerant flowing out from the liquid outlet hole of the inlet pipe is less likely to directly impact the inner wall of the liquid receiver, which can relatively reduce the amount of refrigerant in contact with the inner wall of the liquid receiver, thereby reducing the influence of outdoor ambient temperature on the refrigerant state. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a liquid storage tank in related technologies;

[0012] Figure 2 for Figure 1 The diagram shows the structure of the inlet pipe in the reservoir.

[0013] Figure 3 For refrigerant to enter Figure 1 A schematic diagram of the flow path within the reservoir shown.

[0014] Figure 4 This is a schematic diagram of the liquid reservoir according to the first embodiment provided in this application;

[0015] Figure 5 For refrigerant to enter Figure 4 A schematic diagram of the flow path within the reservoir shown.

[0016] Figure 6 for Figure 4 A schematic diagram of the inlet pipe in the liquid reservoir shown from a first perspective.

[0017] Figure 7 for Figure 4 A schematic diagram of the inlet pipe in the liquid reservoir shown from a second perspective;

[0018] Figure 8 for Figure 4 A schematic diagram of the inlet pipe in the liquid reservoir shown from a third perspective;

[0019] Figure 9 for Figure 4A schematic diagram of the inlet pipe in the liquid reservoir shown from a fourth perspective;

[0020] Figure 10 for Figure 4 A schematic diagram of the inlet pipe in the liquid reservoir shown from a fifth perspective;

[0021] Figure 11 for Figure 4 An axial sectional view of the inlet pipe in the reservoir shown.

[0022] Figure 12 This is a schematic diagram of the structure of the inlet pipe in the liquid reservoir of the second embodiment provided in this application;

[0023] Figure 13 for Figure 12 The axial sectional view of the inlet pipe shown.

[0024] Figure 14 This is a schematic diagram of the structure of the inlet pipe in the liquid reservoir according to the third embodiment provided in this application.

[0025] The reference numerals in the above figures are explained as follows:

[0026] 01-Shell, 02-Inlet pipe, 03-Suction pipe;

[0027] 1-Liquid reservoir body, 1a-Inner cavity, 11-Upper end cap, 12-Vessel body, 13-Lower end cap;

[0028] 2-Inlet pipe, 2a-Liquid outlet, 2b-First vent, 2c-Second vent, 2d-Liquid inlet, 21-Small diameter section, 22-Large diameter section, 221-First straight pipe section, 222-Bend section, 223-Second straight pipe section, 23-End cap, 24-Joint, 25-Transition section;

[0029] 3-Outlet pipe;

[0030] 4-Mounting plate. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] It should be noted that: in this application, the "first end" of the inlet pipe 2 is the end where the refrigerant flows into the inlet pipe 2, that is, the end where the liquid inlet 2d is located, and the "last end" of the inlet pipe 2 is the other end along the axial direction, that is, the end where the end cap 23 is located; in each pipe section, for example, the small diameter section 21, the large diameter section 22, the first straight pipe section 221, the bend section 222 and the second straight pipe section 223, the "first end" and the "last end" are respectively the two ends along the axis of the inlet pipe 2 from the first end to the last end.

[0033] The terms "first" and "second" used in this application are merely for the convenience of describing two or more structures or components that are identical or similar in structure and / or function, and do not imply any special limitation on their order and / or importance.

[0034] In this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the liquid reservoir according to the first embodiment provided in this application. Figure 5 For refrigerant to enter Figure 4 The diagram shows the flow path within the reservoir. Figure 5 In the diagram, a single-dotted line represents a two-phase refrigerant (gas and liquid), an arrow indicates the direction of refrigerant flow into inlet pipe 2, a double-dotted line represents the flow path of liquid refrigerant, and a dashed line represents the flow path of gaseous refrigerant.

[0036] In the first embodiment provided in this application, such as Figure 4 As shown, the reservoir includes a reservoir body 1 and an inlet pipe 2; the reservoir body 1 has an inner cavity 1a, the inlet pipe 2 is inserted into the inner cavity 1a from the side of the reservoir body 1, the end of the inlet pipe 2 is closed, and at least one outlet hole 2a is provided on the side wall of the inlet pipe 2 located in the inner cavity 1a.

[0037] It is easy to understand that the liquid receiver body 1 may include an upper end cap 11, a body 12, and a lower end cap 13. The upper end cap 11 and the lower end cap 13 are respectively connected to the upper and lower ends of the body 12 to form the aforementioned closed inner cavity 1a together with the body 12. Specifically, the liquid receiver body 1 can be installed and fixed by the mounting plate 4 at the bottom. The liquid receiver also includes an outlet pipe 3, which is inserted into the inner cavity 1a. Specifically, it can be inserted into the inner cavity 1a from the top or side of the liquid receiver body 1, and its bottom end extends into the bottom of the inner cavity 1a. The inlet pipe 2 has a liquid inlet 2d. The first end of the inlet pipe 2 can be fixed to the side wall of the liquid receiver body 1. The gas-liquid two-phase refrigerant (for example, a liquid-to-gas ratio of 9:1) can flow into the inlet pipe 2 horizontally through the liquid inlet 2d, and then flow into the inner cavity 1a through the liquid outlet 2a. Specifically, the refrigerant flow direction of the inlet pipe 2 can be as follows: Figure 5 The direction from left to right in the middle, that is Figure 5 The direction indicated by the middle arrow.

[0038] In related technologies, such as Figure 3 As shown, the liquid outlet of the inlet pipe 02 is at the end, and the outlet faces the opposite side wall of the casing. This makes it easy for the refrigerant to directly impact the opposite side wall of the casing after flowing out of the outlet, making the refrigerant's state easily affected by the outdoor ambient temperature. Taking a refrigeration system using CO2 as a refrigerant in a subtropical environment as an example, the temperature in the subtropical environment is as high as 43℃, and the actual outdoor temperature is higher than 43℃. The condensation temperature of CO2 refrigerant is 31℃. Obviously, the outdoor ambient temperature is higher than the refrigerant's condensation temperature, making it easy for the liquid refrigerant in the casing side wall area to vaporize. The system's liquid return stability is particularly affected by the outdoor ambient temperature, and the system's energy efficiency loss is relatively large.

[0039] like Figure 5 As shown, the liquid receiver provided in the first embodiment of this application closes the end of the inlet pipe 2 and provides at least one liquid outlet hole 2a on the side wall of the inlet pipe 2 located in the inner cavity 1a. This makes it less likely that the refrigerant will directly impact the inner wall of the liquid receiver body 1 (hereinafter referred to as "inner wall") of the inlet pipe 2 in the direction of refrigerant inflow after flowing out of the inlet pipe 2 through the liquid outlet hole 2a. This can relatively reduce the amount of refrigerant in contact with the inner wall of the liquid receiver, thereby reducing the influence of outdoor ambient temperature on the refrigerant state and reducing the risk of vaporization of liquid refrigerant inside the liquid receiver.

[0040] In addition, please combine Figures 2 to 3 It is understood that in the relevant technology, the inlet pipe 02 is designed as a straight pipe with a constant diameter. When the low-flow-rate refrigerant passes through the inlet pipe 02, it is not buffered. After leaving the outlet of the inlet pipe 02, the refrigerant moves quickly and then settles due to gravity. The settling refrigerant is prone to directly impacting the liquid surface at the bottom of the receiver under high flow rate. The impacted liquid surface is prone to significant fluctuations, which makes the flow rate of the refrigerant inside the suction pipe 03 fluctuate greatly, affecting the opening of the throttling device and resulting in poor system stability.

[0041] The liquid receiver provided in the first embodiment of this application, by sealing the end of the inlet pipe 2, can buffer the refrigerant to a certain extent when it flows to the end of the inlet pipe 2, reducing the flow rate. This results in a relatively lower velocity of the refrigerant settling into the inner cavity 1a after flowing into the inner cavity 1a through the outlet hole 2a, which is outside the end of the inlet pipe 2. This relatively reduces the impact of the settling refrigerant on the liquid surface, making the liquid surface less prone to fluctuation. Consequently, it can relatively reduce the flow rate fluctuation of the refrigerant inside the outlet pipe 3, ensuring that the opening of the throttling device does not change significantly after the refrigerant supply and demand of the system is balanced, and the system operation stability is better.

[0042] Please refer to this as well. Figures 6 to 11 , Figure 6 for Figure 4 The diagram shows the structure of the inlet pipe in the liquid reservoir from a first-view perspective. Figure 7 for Figure 4The diagram shows the structure of the inlet pipe in the liquid reservoir from a second perspective. Figure 8 for Figure 4 The diagram shows the structure of the inlet pipe in the liquid reservoir from a third perspective. Figure 9 for Figure 4 The diagram shows the structure of the inlet pipe in the liquid reservoir from a fourth perspective. Figure 10 for Figure 4 The diagram shows the structure of the inlet pipe in the reservoir from a fifth perspective. Figure 11 for Figure 4 An axial sectional view of the inlet pipe in the reservoir shown.

[0043] In the first embodiment provided in this application, such as Figure 6 and Figure 9 As shown, the inlet pipe 2 is provided with at least one first vent hole 2b; the at least one first vent hole 2b faces upward, and the height of at least one liquid outlet hole 2a is lower than the height of at least one first vent hole 2b.

[0044] Please combine Figure 3 It is understood that in related technologies, the flow trajectory of refrigerant from the outlet of the liquid inlet pipe 02 to its descent is relatively short. Incompletely liquefied gaseous refrigerant is difficult to overflow in time, and is therefore easily carried by the sinking liquid refrigerant into the liquid refrigerant stored in the liquid storage area at the bottom of the shell 01. This gaseous refrigerant accumulates around the part of the suction pipe 03 located inside the liquid refrigerant, forming a large number of bubbles. The suction pipe 03 poses a significant potential risk of carrying this gaseous refrigerant into subsequent pipelines, and it is also difficult to guarantee the proportion of liquid in the refrigerant introduced into the throttling device through the suction pipe 03.

[0045] Please combine Figure 5 Understandably, the liquid receiver provided in the first embodiment of this application has at least one upward-facing first vent hole 2b in the inlet pipe 2. At the same time, the height of the first vent hole 2b is higher than the height of the liquid outlet hole 2a. When the gaseous and liquid refrigerant enters the inlet pipe 2, the gaseous refrigerant can overflow from the first vent hole 2b in time and float in the inner cavity 1a, while the liquid refrigerant flows out through the liquid outlet hole 2a and sinks in the inner cavity 1a. This can achieve gas-liquid separation of the gaseous and liquid refrigerant to a certain extent, making it less likely that the gaseous refrigerant will be carried into the liquid storage area by the sinking liquid refrigerant. This is beneficial to increasing the proportion of liquid in the refrigerant introduced into the throttling device through the outlet pipe 3.

[0046] It is worth noting that the first vent 2b faces upwards; specifically, the orientation of the first vent 2b can be as follows: Figure 11 The image shows a direction facing directly upwards. However, it can also be offset by a certain angle relative to directly upwards, that is, it can be tilted upwards. There are no specific restrictions.

[0047] In actual setup, the number and arrangement of the first vent 2b are not limited.

[0048] like Figure 6 , Figure 9 , Figure 11 As shown, in the first embodiment provided in this application, there are two or more first vent holes 2b. The two or more first vent holes 2b are distributed at intervals along the axial direction of the inlet pipe 2, which can improve the overflow effect of gaseous refrigerant and further ensure that the gaseous refrigerant is not easily carried into the liquid storage area by the sinking liquid refrigerant.

[0049] Furthermore, each of the first vent holes 2b can be distributed at equal intervals along the axial direction of the inlet pipe 2 to further enhance the overflow effect of the gaseous refrigerant.

[0050] It is easy to understand that the liquid outlet 2a can be located on the side wall of the inlet pipe 2, and its orientation is not limited. For example, it does not have to be directly opposite the inner wall of the unit opposite the inlet pipe 2 in the refrigerant inflow direction. In other words, when the refrigerant flow direction of the inlet pipe 2 is... Figure 5 When the direction indicated by the middle arrow is horizontal, the orientation of the liquid outlet 2a does not have to be parallel to the refrigerant inflow direction of the inlet pipe 2. This prevents direct impact on the inner wall of the opposite container and reduces the influence of the external ambient temperature on the refrigerant state inside the liquid receiver.

[0051] In actual setup, the number and arrangement of the liquid outlet holes 2a are not limited.

[0052] like Figures 7 to 8 , Figure 10 As shown, in the first embodiment provided in this application, there is one liquid outlet 2a, thus the structure is relatively simple.

[0053] Of course, there can be two or more liquid outlet holes 2a and the first gas outlet hole 2b. The two or more liquid outlet holes 2a can also be distributed at equal intervals along the axial direction of the inlet pipe 2 to achieve a more uniform flow of liquid refrigerant.

[0054] In actual setup, the structure of the inlet pipe 2 is not limited, and the specific location of the outlet hole 2a is also not limited. The specific location of the outlet hole 2a can be set according to the structure of the inlet pipe 2.

[0055] In the first embodiment provided in this application, such as Figure 6 As shown, the inlet pipe 2 includes a small diameter section 21 and a large diameter section 22; the small diameter section 21 and the large diameter section 22 are connected, the end of the large diameter section 22 is closed, the inner diameter of the large diameter section 22 is larger than the inner diameter of the small diameter section 21, and at least one liquid outlet hole 2a is provided on the side wall of the large diameter section 22.

[0056] It is easy to understand that the beginning of the small diameter section 21 can form or connect to the liquid inlet 2d of the inlet pipe 2. The refrigerant flows into the small diameter section 21 through the liquid inlet 2d, then enters the large diameter section 22, and finally flows out of the inlet pipe 2 through the liquid outlet 2a on the side wall of the large diameter section 22 and enters the inner cavity 1a.

[0057] During use, since the inner diameter of the large-diameter section 22 is larger than that of the small-diameter section 21, the refrigerant is buffered to a certain extent after entering the large-diameter section 22 from the small-diameter section 21, and the flow rate decreases, entering a low-flow-rate state. When the refrigerant leaves the inlet pipe 2 through the liquid outlet 2a, it tends to be in a stable flow state in the inner cavity 1a and slowly sinks, which can further reduce the impact of the sinking refrigerant on the liquid storage surface, making the liquid refrigerant stored at the bottom of the inner cavity 1a less prone to fluctuation. Correspondingly, it can further reduce the flow rate fluctuation of the liquid refrigerant sucked out by the outlet pipe 3 after the refrigerant supply and demand of the system is balanced, so that the opening of the throttling device does not change significantly, which can further improve the stability of the system operation.

[0058] In addition, the liquid outlet 2a is located on the side wall of the large diameter section 22, which makes it less likely for the refrigerant flowing out through the liquid outlet 2a to directly impact the inner wall of the liquid receiver. This can further reduce the amount of refrigerant in contact with the inner wall of the liquid receiver, thereby further reducing the impact of the outdoor ambient temperature on the refrigerant state.

[0059] It is worth noting that the first end of the inlet pipe 2 can be fixed to the side wall of the vessel body 12, and the small-diameter section 21 can be fixed to the vessel body 12. The first end of the small-diameter section 21 can form the liquid inlet 2d of the inlet pipe 2, or it can be like... Figure 4 and Figure 6 As shown, the inlet pipe 2 also includes a connector 24, which can connect the first end of the small diameter section 21 to the connector 24. The connector 24 is fixed to the side wall of the body 12. The first end of the connector 24 can form the liquid inlet 2d of the inlet pipe 2, and the small diameter section 21 is connected to the liquid inlet 2d. The specific connection is not limited.

[0060] In specific settings, the diameters of the small-diameter section 21 and the large-diameter section 22 are not limited.

[0061] In the first embodiment provided in this application, the inner diameter of the large-diameter section 22 is greater than or equal to 1.5 times the inner diameter of the small-diameter section 21. This design, with its variable flow path from small to large diameter in the inlet pipe 2, provides better buffering for the refrigerant and is more conducive to reducing the refrigerant flow rate, thereby further reducing the impact of the refrigerant entering the inner cavity 1a on the liquid storage surface.

[0062] In specific settings, the cross-sectional size of the liquid outlet 2a is not limited.

[0063] In the first embodiment provided in this application, the cross-sectional area of ​​the liquid outlet 2a is larger than the cross-sectional area of ​​the liquid inlet 2d. This further reduces the flow rate of the refrigerant flowing out through the liquid outlet 2a, thereby further weakening the impact of the refrigerant entering the inner cavity 1a on the liquid storage surface.

[0064] In specific settings, the structural forms of the small diameter section 21 and the large diameter section 22 are not limited, and the position of the liquid outlet 2a on the large diameter section 22 is not limited. The position of the liquid outlet 2a can be set according to the structure of the small diameter section 21 and the large diameter section 22.

[0065] In the first embodiment provided in this application, such as Figures 6 to 8 , Figure 11 As shown, both the small-diameter section 21 and the large-diameter section 22 are straight pipes. The end of the small-diameter section 21 is connected to the beginning of the large-diameter section 22, and at least one liquid outlet 2a is located at the lower part of the large-diameter section 22. In this way, the liquid outlet 2a is set downward, making it less likely for the refrigerant flowing out through the liquid outlet 2a to impact the inner wall of the liquid receiver. At the same time, the small-diameter section 21 and the large-diameter section 22 of the straight pipe structure are connected to each other, making the structure relatively simple and easy to manufacture.

[0066] It is worth noting that the upper and lower parts of a pipe segment mentioned in this application refer to horizontal pipe segments. The portion above the axis of the horizontal pipe segment is the upper part of the pipe segment, and the portion below the axis is the lower part of the pipe segment. For example, in the first embodiment of this application, the large-diameter segment 22 is a horizontal straight pipe. The upper part of the large-diameter segment 22 refers to the portion above the axis of the large-diameter segment 22, and the lower part of the large-diameter segment 22 refers to the portion below the axis of the large-diameter segment 22. The liquid outlet 2a faces downward. Specifically, the orientation of the liquid outlet 2a can be as follows: Figure 11 The image shows the direction directly downwards, but it can also be offset at a certain angle relative to directly downwards, that is, it can be tilted downwards, and there are no specific restrictions.

[0067] Please combine Figure 6 , Figures 9 to 11 Understood, in the first embodiment provided in this application, at least one first vent hole 2b is provided on the upper part of the side wall of the large-diameter section 22. Thus, with the liquid outlet hole 2a facing downwards and the first vent hole 2b facing upwards, after the gaseous and liquid refrigerant enters the large-diameter section 22, the gaseous refrigerant can promptly overflow upwards through the first vent hole 2b, while the liquid refrigerant can promptly flow downwards from the liquid outlet hole 2a. Simultaneously, since both the liquid outlet hole 2a and the first vent hole 2b are located in the large-diameter section 22, the gaseous and liquid refrigerant can be buffered within the large-diameter section 22, slowing its flow rate before gas-liquid separation, which is more conducive to improving the gas-liquid separation effect of the refrigerant.

[0068] In specific settings, the relative positions of the liquid outlet 2a and the first air outlet 2b are not limited.

[0069] like Figure 6 , Figures 10 to 11 As shown, in the first embodiment provided in this application, the liquid outlet 2a can be arranged opposite to some of the first gas outlets 2b. For example, three first gas outlets 2b can be arranged along the axial direction of the large-diameter section 22, and the liquid outlet 2a can be opposite to two of the first gas outlets 2b. In this way, after the gas-liquid two-phase refrigerant enters the large-diameter section 22, the liquid refrigerant can flow out from the liquid outlet 2a in a timely manner, and the gaseous refrigerant can overflow from the first gas outlet 2b on the opposite side of the liquid outlet 2a more timely, which can further improve the gas-liquid separation effect of the refrigerant.

[0070] In the first embodiment provided in this application, such as Figure 6 and Figure 7 As shown, the small diameter segment 21 can be connected to the large diameter segment 22 through a transition segment 25, which can be a gradually expanding structure from the beginning to the end.

[0071] Please refer to this as well. Figures 12 to 13 , Figure 12 This is a schematic diagram of the structure of the inlet pipe in the liquid reservoir of the second embodiment provided in this application. Figure 13 for Figure 12 The axial sectional view of the inlet pipe is shown.

[0072] In the second embodiment provided in this application, please refer to Figure 12 and Figure 13 It is understood that both the small diameter section 21 and the large diameter section 22 are straight pipes. The end of the small diameter section 21 and the beginning of the large diameter section 22 are open. The beginning of the large diameter section 22 is fitted onto the end of the small diameter section 21. The inner diameter of the large diameter section 22 is larger than the outer diameter of the small diameter section 21. The beginning of the large diameter section 22 forms a liquid outlet hole 2a.

[0073] In this way, by cleverly utilizing the connection between the small diameter section 21 and the large diameter section 22, a liquid outlet 2a is formed at the beginning of the large diameter section 22. Not only does the orientation of the liquid outlet 2a face away from the inner wall of the container on the opposite side of the inlet pipe 2 in the direction of refrigerant inflow, but the refrigerant flowing out through the liquid outlet 2a will not impact the inner wall of the container on the opposite side. This can greatly reduce the influence of the outdoor ambient temperature on the state of the refrigerant flowing out from the liquid outlet 2a. Moreover, after the refrigerant inside the small diameter section 21 flows into the large diameter section 22, it can flow in the opposite direction to the liquid outlet 2a at the beginning of the large diameter section 22. This can buffer the refrigerant to a great extent, reduce its flow rate, and make it less likely to impact the liquid storage surface after flowing out from the liquid outlet 2a.

[0074] In specific settings, the length by which the smaller diameter section 21 extends into the larger diameter section 22 is unlimited.

[0075] Please combine Figure 13It is understood that in the second embodiment provided in this application, the small diameter section 21 can extend to the end near the large diameter section 22, so that the refrigerant flowing out of the small diameter section 21 has a longer reverse flow trajectory in the large diameter section 22, receives more buffer time, and is less likely to impact the liquid storage surface after flowing out of the liquid outlet 2a.

[0076] In specific configurations, the end structure of the small-diameter segment 21 is not limited.

[0077] Please combine Figure 13 It is understood that in the second embodiment provided in this application, a portion of the end of the small diameter section 21 can be cut off to form an upwardly inclined slope. In this way, the outlet of the end of the small diameter section 21 faces downward at an angle, and the cross-sectional area of ​​the outlet is larger, which is more conducive to improving the buffering effect of the refrigerant.

[0078] Please combine Figure 12 and Figure 13 In the second embodiment provided in this application, at least one first vent 2b is provided on the upper part of the side wall of the large-diameter section 22, and the at least one first vent 2b is connected to the small-diameter section 21. Thus, a liquid outlet 2a is formed at the beginning of the large-diameter section 22, and the first vent 2b faces upwards. After the gas-liquid two-phase refrigerant enters the small-diameter section 21, the liquid refrigerant can flow into the large-diameter section 22 in a timely manner and flow to the left to the liquid outlet 2a, and then flow out to the left and downwards through the liquid outlet 2a. The gaseous refrigerant can overflow from the first vent 2b at the upper part of the large-diameter section 22 in a timely manner, which can further improve the gas-liquid separation effect of the refrigerant.

[0079] In specific settings, the way the first air outlet 2b and the small diameter section 21 are connected is not limited.

[0080] Please combine Figure 13 In the second embodiment provided in this application, at least a portion of the upper outer wall of the small-diameter section 21 and at least a portion of the upper inner wall of the large-diameter section 22 are fitted and fixed together. At least one first vent 2b is provided in the portion of the large-diameter section 22 that fits with the small-diameter section 21. At least one second vent 2c is provided on the upper side wall of the small-diameter section 21, and the at least one second vent 2c and the at least one first vent 2b are connected. Thus, the first vent 2b is connected to the small-diameter section 21 through the second vent 2c. After the gaseous and liquid refrigerant enters the small-diameter section 21, the gaseous refrigerant can overflow upwards in a timely manner through the second vent 2c and the first vent 2b, while the liquid refrigerant flows from the small-diameter section 21 into the large-diameter section 22, is buffered, and then flows downwards through the liquid outlet 2a. This is more conducive to improving the gas-liquid separation effect of the refrigerant. Moreover, the small-diameter section 21 and the large-diameter section 22 can be fixed together by simple methods such as welding, making manufacturing easier.

[0081] In one embodiment not shown in this application, the upper part of the outer wall of the small-diameter section 21 and the upper part of the inner wall of the large-diameter section 22 are fitted and fixed together, and at least one first vent 2b is provided on the part of the large-diameter section 22 that is not fitted with the small-diameter section 21. In this way, the first vent 2b is connected to the small-diameter section 21 through the large-diameter section 22. After the gaseous and liquid refrigerant enters the large-diameter section 22 through the small-diameter section 21, it can be buffered. The gaseous refrigerant can overflow more fully and can flow upward through the first vent 2b in a timely manner, while the liquid refrigerant flows downward through the liquid outlet 2a, which is more conducive to improving the gas-liquid separation effect of the refrigerant.

[0082] In another embodiment not shown in this application, the small diameter section 21 may not be attached to the large diameter section 22, but may be located at the radial center of the large diameter section 22. The two may be connected by an additional bracket. In this case, the small diameter section 21 may not need to be provided with a second vent 2c, and the liquid outlet 2a is annular. After the refrigerant enters the large diameter section 22, gas-liquid separation is performed. The gaseous refrigerant overflows upward from the first vent 2b at the top of the large diameter section 22, while the liquid refrigerant flows downward from the liquid outlet 2a on the left side.

[0083] In specific settings, the number of second vents 2c is unlimited.

[0084] Please combine Figure 12 and Figure 13 It is understood that in the second embodiment provided in this application, more than two second vent holes 2c and more than two first vent holes 2b can be provided, and the number of the two or more second vent holes 2c can be the same as the number of the two or more first vent holes 2b, and they can be connected in a one-to-one correspondence. In this way, the gaseous refrigerant can flow out more uniformly, which is beneficial to further improving the gas-liquid separation effect of the refrigerant.

[0085] Please refer to this as well. Figure 14 , Figure 14 This is a schematic diagram of the structure of the inlet pipe in the liquid reservoir according to the third embodiment provided in this application.

[0086] In the third embodiment provided herein, such as Figure 14 As shown, the small-diameter section 21 is a straight pipe and the large-diameter section 22 is a bent pipe. Specifically, it includes a first straight pipe section 221, a bent pipe section 222 and a second straight pipe section 223 connected sequentially from the beginning to the end. The end of the small-diameter section 21 is connected to the beginning of the first straight pipe section 221, and at least one liquid outlet hole 2a is provided in the second straight pipe section 223.

[0087] Thus, the refrigerant enters the first straight pipe section 221 of the large diameter section 22 through the small diameter section 21, then enters the bend section 222 from the first straight pipe section 221, changes its flow direction in the bend section 222 and enters the second straight pipe section 223, and flows out downward from the liquid outlet 2a on the second straight pipe section 223. The refrigerant is not only buffered by the large cross-section inside the large diameter section 22, but also further buffered by changing its flow direction in the bend section 222, which can improve the buffering effect of the refrigerant and is more conducive to reducing the refrigerant flow rate. This makes the refrigerant flowing out of the liquid outlet 2a less likely to impact the liquid surface and less likely to impact the inner wall of the container.

[0088] In specific settings, the included angle between the axes of the second straight pipe section 223 and the first straight pipe section 221 is not limited.

[0089] Please combine Figure 14 It is understood that in the third embodiment provided by the applicant, the first straight pipe section 221 can be set horizontally and the second straight pipe section 223 can be set vertically. In this way, the large diameter section 22 is easier to manufacture and has a better buffering effect on the refrigerant, making it less likely for the refrigerant flowing out of the liquid outlet 2a to impact the inner wall of the container and the liquid storage surface.

[0090] Furthermore, such as Figure 14 As shown, the liquid outlet 2a can be located on the side of the second straight pipe section 223 near the small-diameter section 21. In other words, the orientation of the liquid outlet 2a is away from the inner wall of the container opposite to the inlet pipe 2 in the refrigerant inflow direction. The refrigerant flowing out of the liquid outlet 2a will not directly impact the inner wall of the container on the opposite side, thus making its state less susceptible to the influence of the outdoor ambient temperature. Of course, the liquid outlet 2a can also be located in other positions of the second straight pipe section 223, without any specific restrictions. Among them, since the large-diameter section 22 in the form of a bend not only uses a large cross-section to buffer the refrigerant, but also uses the change of refrigerant flow direction for further buffering, the buffering effect is better, so the liquid outlet 2a can even be located on the front side of the second straight pipe section 223 in the refrigerant inflow direction of the inlet pipe 2. In this way, the large-diameter section 22 in the form of a bend makes the setting of the liquid outlet 2a more flexible.

[0091] In the third embodiment provided herein, at least one first vent hole 2b is provided on the upper side wall of the first straight pipe section 221. Thus, after the gas-liquid two-phase refrigerant enters the first straight pipe section 221, the liquid refrigerant continues to flow downwards into the second straight pipe section 223 and exits through the liquid outlet hole 2a on the second straight pipe section 223, while the gaseous refrigerant overflows through the upper first vent hole 2b, which helps to further improve the gas-liquid separation effect of the refrigerant.

[0092] In actual setup, the shape of the first vent 2b can be as follows: Figure 7 and Figure 14The bar shape shown can also be circular or elliptical; there are no specific restrictions.

[0093] In actual setup, the method of sealing the end of inlet pipe 2 is not limited.

[0094] In the embodiments provided in this application, the end of the inlet pipe 2 is provided with a cap 23, which is used to seal the end of the inlet pipe 2. In this way, the end of the inlet pipe 2 can be stably sealed by the cap 23, and the structure is relatively simple and easy to manufacture.

[0095] In specific settings, the connection method between the end cap 23 and the end of the inlet pipe 2 is not limited.

[0096] like Figure 6 , Figure 11 and Figure 14 As shown in the first and third embodiments provided in this application, the end cap 23 can be integrally formed with the end of the inlet pipe 2. Specifically, the small-diameter section 21, the transition section 25, the large-diameter section 22, and the end cap 23 can be integrally formed. In this way, the structure of the inlet pipe 2 is relatively simple, the strength is high, and it is easy to manufacture. The manufacturing process of the end cap 23 is not limited. For example, it can be manufactured by spinning, which requires relatively simple equipment and molds, making manufacturing easier.

[0097] like Figure 12 and Figure 13 As shown, in the second embodiment provided in this application, the end cap 23 can be fitted onto the end of the inlet pipe 2, thus facilitating assembly. The end cap 23 can be connected to the end of the inlet pipe 2 via threads or by welding, such as brazing; no specific connection is limited.

[0098] In specific configurations, the end cap 23 can be spherical, elliptical, or butterfly-shaped; this application does not impose any restrictions on this.

[0099] It is worth noting that the above embodiments of this application use a combination of two pipe segments with different diameters, small diameter segment 21 and large diameter segment 22, to buffer the refrigerant inside the inlet pipe 2. In fact, in embodiments not shown in this application, the inlet pipe 2 may not be designed as a combination of pipe segments with different diameters. For example, it may be designed as a gradually expanding form from the beginning to the end, specifically by gradually increasing the inner diameter from the beginning to the end to buffer the refrigerant inside the inlet pipe 2. This application does not limit this.

[0100] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the apparatus and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A reservoir characterized by, The reservoir includes a reservoir body (1) and an inlet pipe (2); The reservoir body (1) has an inner cavity (1a), and the inlet pipe (2) is inserted into the inner cavity (1a) from the side of the reservoir body (1). The end of the inlet pipe (2) is closed, and at least one outlet hole (2a) is provided on the side wall of the inlet pipe (2) located in the inner cavity (1a).

2. The reservoir of claim 1, wherein, The inlet pipe (2) is provided with at least one first vent (2b); At least one of the first vent holes (2b) faces upward, and the height of at least one of the liquid outlet holes (2a) is lower than the height of at least one of the first vent holes (2b).

3. The reservoir of claim 2, wherein, There are two or more first air outlets (2b), and the two or more first air outlets (2b) are distributed at intervals along the axial direction of the inlet pipe (2).

4. The reservoir of any one of claims 1-3, wherein, The inlet pipe (2) includes a small-diameter section (21) and a large-diameter section (22); The small diameter section (21) and the large diameter section (22) are connected. The end of the large diameter section (22) is closed. The inner diameter of the large diameter section (22) is larger than the inner diameter of the small diameter section (21). At least one of the liquid outlet holes (2a) is provided on the side wall of the large diameter section (22).

5. The reservoir of claim 4, wherein, Both the small diameter section (21) and the large diameter section (22) are straight pipes. The end of the small diameter section (21) is connected to the beginning of the large diameter section (22), and at least one of the liquid outlet holes (2a) is located at the lower part of the large diameter section (22).

6. The reservoir of claim 5, wherein, The upper part of the side wall of the large-diameter section (22) is provided with at least one first air outlet (2b).

7. The reservoir of claim 4, wherein, Both the small diameter section (21) and the large diameter section (22) are straight pipes. The end of the small diameter section (21) and the beginning of the large diameter section (22) are open. The beginning of the large diameter section (22) is fitted onto the end of the small diameter section (21). The inner diameter of the large diameter section (22) is larger than the outer diameter of the small diameter section (21). The beginning of the large diameter section (22) forms the liquid outlet hole (2a).

8. The reservoir of claim 7, wherein, The upper part of the side wall of the large diameter section (22) is provided with at least one first air outlet (2b), and at least one first air outlet (2b) is connected to the small diameter section (21).

9. The reservoir of claim 8, wherein, At least a portion of the upper part of the outer wall of the small diameter section (21) and at least a portion of the upper part of the inner wall of the large diameter section (22) are attached and fixed together; At least one first vent (2b) is provided in the portion of the large diameter section (22) that is in contact with the small diameter section (21), and at least one second vent (2c) is provided on the upper side wall of the small diameter section (21), and at least one second vent (2c) and at least one first vent (2b) are connected; or, at least one first vent (2b) is provided in the portion of the large diameter section (22) that is not in contact with the small diameter section (21).

10. The reservoir of claim 4, wherein, The small-diameter section (21) is a straight pipe, and the large-diameter section (22) includes a first straight pipe section (221), a bend pipe section (222), and a second straight pipe section (223) connected sequentially from the beginning to the end. The end of the small-diameter section (21) is connected to the beginning of the first straight pipe section (221), and at least one of the liquid outlet holes (2a) is provided in the second straight pipe section (223).

11. The reservoir of claim 10, wherein, The upper part of the side wall of the first straight pipe section (221) is provided with at least one first air outlet (2b).

12. The reservoir of claim 4, wherein, The inner diameter of the large diameter segment (22) is greater than or equal to 1.5 times the inner diameter of the small diameter segment (21).

13. The reservoir according to any one of claims 1 to 3, characterized in that, The inlet pipe (2) has an inlet (2d), and the cross-sectional area of ​​the outlet (2a) is larger than the cross-sectional area of ​​the inlet (2d).

14. The reservoir according to any one of claims 1 to 3, characterized in that, The end of the inlet pipe (2) is provided with a cap (23), which is used to seal the end of the inlet pipe (2).

15. The reservoir according to claim 14, characterized in that, The end cap (23) and the end of the inlet pipe (2) are integrally formed, or the end cap (23) is fitted onto the end of the inlet pipe (2).

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