Liquid storage device, vertical scroll compressor and refrigeration cycle system

Abstract

The application belongs to the technical field of refrigeration engineering, and particularly relates to a liquid storage device, a vertical scroll compressor and a refrigeration cycle system. The liquid storage device comprises a shell, the shell has a cavity, an input port and an output port are arranged at the upper part of the shell, and a buffer chamber is arranged at the lower part of the shell. A first conveying pipe is arranged in the cavity, one end of the first conveying pipe towards the top of the cavity is an open end, and the other end of the first conveying pipe towards the bottom of the cavity is in communication with the buffer chamber. A second conveying pipe is arranged in the cavity, one end of the second conveying pipe towards the top of the cavity is in communication with the output port, and the other end of the second conveying pipe towards the bottom of the cavity is in communication with the buffer chamber. The technical scheme of the embodiment of the application solves the problems of low energy efficiency and large gas flow noise caused by large gas flow resistance loss in the refrigeration cycle process.

Description

Technical Field

[0001] This application belongs to the field of refrigeration engineering technology, and particularly relates to a liquid storage device, a vertical scroll compressor and a refrigeration cycle system. Background Technology

[0002] like Figure 1 As shown, in the prior art, the air inlet 301 of the vertical scroll compressor 300 is located at the upper part of the housing of the vertical scroll compressor 300, and the air outlet 303 of the liquid storage device 302 is also located at the lower part of the housing of the liquid storage device 302. The liquid storage device 302 and the vertical scroll compressor 300 are connected to each other through a pipe 304. A part of the pipe 304 extends into the interior of the liquid storage device 302, and the upper end of the pipe 304 facing the liquid storage device 302 is the air inlet. In order to prevent liquid droplets carried in the gaseous refrigerant from directly entering the pipe 304 and being directly transported to the vertical scroll compressor 300, resulting in liquid slugging, a flow divider 305 is provided between the upper air inlet of the liquid storage device 302 and the port of the pipe 304. The flow divider 305 separates the air inlet of the pipe 304 from the upper air inlet of the liquid storage device 302, so that the airflow does not directly enter the pipe 304. Furthermore, after the pipe 304 exits from the lower part of the liquid storage device 302, it bends upward to connect with the air inlet 301 of the vertical scroll compressor 300. Therefore, a relatively long pipe 304 is required between the air outlet 303 of the liquid storage device 302 and the air inlet 301 of the vertical scroll compressor 300. As a result, the vertical scroll compressor 300 experiences high gas flow resistance, severe intake overheating, significant energy loss, and low energy efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a liquid storage device, a vertical scroll compressor, and a refrigeration cycle system, which aims to solve the problem of low energy efficiency caused by high gas flow resistance during the refrigeration cycle.

[0004] To achieve the above objectives, the technical solution adopted in this application embodiment is as follows: a liquid storage device, comprising: a shell having a cavity, an inlet and an outlet provided at the upper part of the shell, and a buffer chamber provided at the lower part of the shell; a first delivery pipe located within the cavity, with one end of the first delivery pipe facing the top of the cavity being an open end, and the other end of the first delivery pipe facing the bottom of the cavity being connected to the buffer chamber; and a second delivery pipe located within the cavity, with one end of the second delivery pipe facing the top of the cavity being connected to the outlet, and the other end of the second delivery pipe facing the bottom of the cavity being connected to the buffer chamber.

[0005] Optionally, the liquid storage device further comprises a buffer partition plate, the buffer partition plate is installed in the cavity to divide the cavity into a buffer chamber and a liquid storage chamber, the first conveying pipe and the second conveying pipe are both located in the liquid storage chamber, the buffer partition plate is provided with a first through hole and a second through hole, the other end of the first conveying pipe towards the bottom of the cavity is inserted into the first through hole, and the other end of the second conveying pipe towards the bottom of the cavity is inserted into the second through hole.

[0006] Optionally, the shell comprises a top shell, a bottom shell and a side shell, the top shell and the bottom shell are connected to two ends of the side shell to form a cylindrical shell, and the buffer partition plate is connected to an inner wall of the side shell close to the bottom shell, and the buffer chamber is formed between the buffer partition plate and the bottom shell.

[0007] Optionally, an inner wall surface of the bottom shell is a concave curved surface concave in a direction away from the top shell.

[0008] Optionally, the liquid storage device further comprises a buffer tank, the buffer tank is assembled in the inner cavity, the buffer tank forms the buffer chamber, a top wall of the buffer tank is provided with a third through hole and a fourth through hole, the other end of the first conveying pipe towards the bottom of the cavity is inserted into the third through hole, and the other end of the second conveying pipe towards the bottom of the cavity is inserted into the fourth through hole.

[0009] Optionally, the shell comprises a top shell, a bottom shell and a side shell, the top shell and the bottom shell are connected to two ends of the side shell to form a cylindrical shell, and a circumferential outer wall of the buffer tank is spaced from an inner wall of the side shell.

[0010] Optionally, the first conveying pipe and the second conveying pipe are both straight pipes, an inner diameter of the first conveying pipe is greater than an inner diameter of the second conveying pipe, and a cross-sectional area S1 of a pipe passage of the first conveying pipe, a cross-sectional area S2 of the second conveying pipe, 1.5≤S1 / S2≤4.

[0011] Optionally, a pipe wall of the first conveying pipe close to the buffer chamber and / or a pipe wall of the second conveying pipe close to the buffer chamber is provided with an oil return hole, and an oil channel in communication with the oil return hole is arranged in the pipe wall provided with the oil return hole, and the oil channel is used for being communicated to an oil groove of a compression blade of the vertical scroll compressor.

[0012] Optionally, a hole diameter of the oil return hole is greater than or equal to 0.5mm and less than or equal to 2.0mm.

[0013] Optionally, the liquid storage device further comprises a filter screen, the filter screen is arranged in a pipe passage of the first conveying pipe and / or the second conveying pipe.

[0014] Optionally, the input port and the output port are both opened on the top shell; the open end of the first conveying pipe is staggered with the air inlet; and / or the liquid storage device further comprises a first flow separation baffle, the first flow separation baffle is located in the cavity to separate the air inlet and the open end of the first conveying pipe, one end of the second conveying pipe penetrates through the first flow separation baffle and is communicated with the air outlet, the first flow separation baffle is provided with a first flow separation hole, and the first flow separation hole is staggered with the open end of the first conveying pipe.

[0015] Optionally, the air inlet is located on the side shell, and the open end of the first conveying pipe is higher than the air inlet; or the air inlet is located on the top shell, and the open end of the first conveying pipe is staggered with the air inlet; and / or the liquid storage device further comprises a second flow separation baffle, the second flow separation baffle is located in the cavity to separate the air inlet and the open end of the first conveying pipe, the second flow separation baffle is provided with a second flow separation hole, and the second flow separation hole is staggered with the open end of the first conveying pipe.

[0016] According to another aspect of the embodiments of the present application, a vertical scroll compressor is provided. Specifically, the vertical scroll compressor comprises the liquid storage device as described above.

[0017] Optionally, the cross-sectional area S1 of the pipe channel of the first conveying pipe, the cross-sectional area S2 of the second conveying pipe, and the displacement V of the vertical scroll compressor satisfy S1 / V≥0.11 cm -1 , and S2 / V≥0.08 cm -1 .

[0018] According to still another aspect of the present application, a refrigeration cycle system is provided. Specifically, the refrigeration cycle system comprises the vertical scroll compressor as described above.

[0019] The embodiments of the present application have at least the following beneficial effects:

[0020] The gaseous refrigerant circulating is separated by the liquid storage device, the pipeline design that the first conveying pipe and the second conveying pipe are both communicated to the buffer chamber in the inner cavity to form the flow path is adopted, and the gas outlet is arranged at the upper portion of the shell, so that the length of the pipeline between the liquid storage device and the vertical scroll compressor is shorter than the length of the pipeline arranged in the bending mode between the liquid storage device and the vertical scroll compressor in the prior art, and the gaseous refrigerant is buffered for the first time after entering the inner cavity, then buffered for the second time by the first conveying pipe into the buffer chamber, and then output from the second conveying pipe to the vertical scroll compressor, so that the flow resistance of the gaseous refrigerant in the refrigeration cycle is smaller, the suction overheating is less, and the energy efficiency of the gaseous refrigerant in the refrigeration cycle is higher. In addition, the flow path formed by the first conveying pipe, the buffer chamber and the second conveying pipe in the liquid storage device is completely arranged in the cavity of the shell, so that the flow noise generated by the gaseous refrigerant in the refrigeration cycle can be effectively reduced in the cavity, and a better mute effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a schematic view of the connection structure between the liquid storage device and the vertical scroll compressor in the prior art;

[0023] Figure 2 is a schematic view of the structure of the liquid storage device of the first embodiment of the present application;

[0024] Figure 3 is a schematic view of the structure of the liquid storage device of the first embodiment of the present application; Figure 2

[0025] Figure 4 is a schematic view of the structure of the buffer partition plate used in the liquid storage device shown in the first embodiment of the present application; Figure 2

[0026] Figure 5 is a schematic view of the structure of the liquid storage device of the second embodiment of the present application;

[0027] Figure 6 is a schematic view of the structure of the liquid storage device of the third embodiment of the present application;

[0028] Figure 7 is a schematic view of the structure of the liquid storage device of the third embodiment of the present application; Figure 6 ​​Structure diagram of the flow distribution partition plate used in the liquid storage device shown;

[0029] Figure 8 Structure diagram of the liquid storage device of the fourth embodiment of the present application;

[0030] Figure 9 is Figure 8 Front view of the buffer tank used in the liquid storage device shown;

[0031] Figure 10 is Figure 9 Top view of the buffer tank shown.

[0032] In the drawings, various reference numbers refer to:

[0033] 302, liquid storage device; 303, gas outlet; 300, vertical scroll compressor; 301, gas inlet; 304, pipeline; 305, flow distribution partition plate; 11, top shell; 12, side shell; 13, bottom shell; 14, input port; 15, output port; 16, cavity; 17, liquid storage chamber; 20, first conveying pipe; 30, second conveying pipe; 40, buffer chamber; 41, buffer partition plate; 411, first through hole; 412, second through hole; 42, buffer tank; 421, third through hole; 422, fourth through hole; 50, oil return hole; 60, filter screen; 70, first flow distribution partition plate; 71, first flow distribution hole; 72, through hole; 80, second flow distribution partition plate; 81, second flow distribution hole; 100, gas inlet pipe; 200, gas outlet pipe. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the embodiments of the present application.

[0035] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the embodiments of the present application.

[0036] In addition, the terms "first", "second", and the like are used only for descriptive purposes, and cannot be construed as indicating or implying relative importance or an indicated number of the technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0037] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0038] Embodiment one:

[0039] As shown in Figure 2 Embodiment one of the present application provides a liquid storage device. Specifically, the liquid storage device comprises a shell, a first conveying pipe 20, a second conveying pipe 30 and a buffer chamber 40. Specifically, when assembled, the shell has a cavity 16, the upper part of the shell is provided with an input port 14 and an output port 15, one of the input port 14 and the output port 15 is an air inlet, and the other is an air outlet (in embodiment one, the input port 14 is the air inlet, and the output port 15 is the air outlet), and the lower part of the shell is provided with the buffer chamber 40. The first conveying pipe 20 is located in the cavity 16, the second conveying pipe 30 is located in the cavity 16, one end of the first conveying pipe 20 towards the top of the cavity is an open end, the other end of the first conveying pipe 20 towards the bottom of the cavity 16 is in communication with the buffer chamber 40, one end of the second conveying pipe 30 towards the top of the cavity is in communication with the air outlet, and the other end of the second conveying pipe 30 towards the bottom of the cavity 16 is in communication with the buffer chamber 40.

[0040] The liquid storage device is applied in a refrigeration cycle system, the gas inlet is connected to an evaporator of the refrigeration cycle system through the gas inlet pipe 100, the gas outlet is connected to a vertical scroll compressor through the gas outlet pipe 200, and the gaseous refrigerant enters the cavity 16 of the shell from the gas inlet pipe 100, that is, the gaseous refrigerant entering from the gas inlet first enters the cavity 16, so that the trace liquid droplets carried by the gaseous refrigerant can be precipitated to the bottom of the cavity 16. Then, the gaseous refrigerant enters the open end of the first conveying pipe 20 from the cavity 16, and then the gaseous refrigerant flows along the gas flow channel composed of the first conveying pipe 20, the buffer chamber 40 and the second conveying pipe 30, and the gaseous refrigerant is output from the gas outlet and conveyed along the gas outlet pipe 200 to the vertical scroll compressor for compression work.

[0041] The liquid storage device provided by the embodiment of the present application realizes gas-liquid separation on the circulating gaseous refrigerant, the liquid storage device adopts the pipeline design that the first conveying pipe 20 and the second conveying pipe 30 are both communicated to the buffer chamber 40 located in the inner cavity 16 to form a flow path, and the gas outlet is arranged at the upper part of the shell, so that compared with the length of the pipeline arranged in a curve between the liquid storage device and the vertical scroll compressor in the prior art, the length of the pipeline between the liquid storage device and the vertical scroll compressor is shorter, and after the gaseous refrigerant is buffered for the first time in the inner cavity 16, the gaseous refrigerant enters the buffer chamber 40 through the first conveying pipe 20 to be buffered for the second time, and then the gaseous refrigerant is output from the second conveying pipe 30 to the vertical scroll compressor, so that the resistance of the gaseous refrigerant flow in the refrigeration cycle process is smaller, the suction overheating is less, and the energy efficiency of the gaseous refrigerant in the refrigeration cycle process is higher.

[0042] In the embodiment, the total volume of the cavity 16 of the shell is V1, the volume of the buffer chamber 40 is V2, and 0.1≤V2 / V1≤0.3.

[0043] Further, since the flow path formed by the first conveying pipe 20, the buffer chamber 40 and the second conveying pipe 30 in the liquid storage device is completely arranged in the cavity 16 of the shell, the along-path noise generated by the gas flow in the refrigeration cycle process can be effectively reduced in the cavity 16, and a better silent effect is achieved.

[0044] In the liquid storage device, since the inner diameter of the first conveying pipe 20 is greater than the inner diameter of the second conveying pipe 30, that is, the cross section of the pipe passage of the first conveying pipe 20 is greater than the cross section of the pipe passage of the second conveying pipe 30, therefore, when the gaseous refrigerant enters the buffer chamber 40 through the first conveying pipe 20 to be buffered and stored and then flows into the second conveying pipe 30, the flow rate is increased, so that the unit time delivery amount of the liquid refrigerant delivered into the compression cavity of the vertical scroll compressor is increased, and thus the compression efficiency of the vertical scroll compressor can be improved.

[0045] As Figure 2As shown, the first conveying pipe 20 and the second conveying pipe 30 are straight pipes, wherein the inner diameter of the first conveying pipe 20 is larger than that of the second conveying pipe 30. Compared with the curved pipe used in the prior art liquid storage device, the length of the pipe in the liquid storage device of the embodiment is shorter, that is, the flow path of the gaseous refrigerant in the liquid storage device is greatly shortened, effectively reducing the flow resistance loss of the gaseous refrigerant along the flow path, and improving the efficiency.

[0046] In one embodiment, the cross-sectional area S1 of the pipe passage of the first conveying pipe 20 and the cross-section S2 of the second conveying pipe 30 satisfy the relationship: 1.5≤S1 / S2≤4.

[0047] When the first conveying pipe 20 and the second conveying pipe 30 of the liquid accumulator are designed and matched according to the displacement V of the vertical scroll compressor, the cross-sectional area S1 of the pipe passage of the first conveying pipe 20 should satisfy S1 / V≥0.11 cm -1 , and the cross-section S2 of the second conveying pipe 30 should satisfy S2 / V≥0.08 cm -1 . Taking the displacement V=14 cm 3 of the vertical scroll compressor as an example, the cross-sectional area S1 of the pipe passage of the first conveying pipe 20 is ≥1.54 cm 2 , and the cross-sectional area S2 of the second conveying pipe 30 is ≥1.12 cm 2 . In this way, the minimum inner diameter values of the first conveying pipe 20 and the second conveying pipe 30 can be determined respectively, so that the first conveying pipe 20 and the second conveying pipe 30 can be correctly selected and assembled.

[0048] When the gaseous refrigerant flows into the cavity 16 of the liquid storage device in circulation, the gaseous refrigerant carries liquid droplets, which are refrigerant liquid droplets that are not completely gasified in the refrigerant circulation process and lubricating oil droplets carried out from the vertical scroll compressor. In the circulation process into the liquid storage device, gas-liquid separation is realized, and the liquid droplets are deposited and stored at the bottom of the cavity 16.

[0049] In order to return the accumulated lubricating oil to the vertical scroll compressor to realize the oil supplement lubrication, the first conveying pipe 20 is provided with the oil return hole 50 near the pipe wall of the buffer chamber 40, the second conveying pipe 30 is provided with the oil return hole 50 near the pipe wall of the buffer chamber 40, or only the first conveying pipe 20 is provided with the oil return hole 50 near the pipe wall of the buffer chamber 40, or only the second conveying pipe 30 is provided with the oil return hole 50 near the pipe wall of the buffer chamber 40. The number of the oil return hole 50 can be one or multiple. The liquid drops accumulated in the bottom of the cavity 16 are the lubricating oil floating on the liquid surface due to the density smaller than that of the liquid refrigerant, thus entering the oil return hole 50 first, and the oil return hole 50 is connected to the oil channel (not shown) provided in the pipe wall, and the pipe wall of the outlet pipe 200 is also provided with the oil return hole connected to the oil channel, and the oil channel is connected to the oil groove of the compression piece, thus the oil return to the oil groove of the compression piece under the negative pressure of the compression cavity of the vertical scroll compressor to realize the oil supplement.

[0050] As shown in Figure 2 , in the liquid storage device provided in the first embodiment, the oil return hole 50 is provided on the pipe wall of the second conveying pipe 30 near the buffer chamber 40.

[0051] Specifically, the hole diameter of the oil return hole 50 is greater than or equal to 0.5 mm and less than or equal to 2.0 mm. In this way, the oil return hole 50 is prevented from being too large to cause the liquid return of the oil return hole 50 to cause the liquid impact on the compression cavity of the vertical scroll compressor, and the oil return hole 50 is also prevented from being too small to cause the oil return not timely to cause the wear of the vertical scroll compressor due to the lack of oil.

[0052] In order to prevent the impurities from entering the compression cavity of the vertical scroll compressor to cause the wear of the scroll blade, as shown in Figure 2 , the liquid storage device further comprises a filter screen 60 for filtering the impurities of the gaseous refrigerant after the gas-liquid separation in the cavity 16. Specifically, the filter screen 60 is arranged in the pipe channel of the first conveying pipe 20, or the filter screen 60 is arranged in the pipe channel of the second conveying pipe 30, or the filter screen 60 is arranged in the pipe channel of the first conveying pipe 20 and the second conveying pipe 30. In the first embodiment, as shown in Figure 2 , the filter screen 60 is arranged in the pipe channel of the first conveying pipe 20 and arranged near the opening end, facilitating the installation and removal of the filter screen 60.

[0053] As shown in Figure 2 , the shell of the liquid storage device comprises a top shell 11, a bottom shell 13 and a side shell 12, the top shell 11 and the bottom shell 13 are respectively sealed and connected to the two ends of the side shell 12, and the three are assembled to form a cylindrical shell, and the cylindrical shell of the liquid storage device is arranged side by side with the vertical scroll compressor when actually assembled and applied in the refrigeration cycle system. As shown in Figure 2 and Figure 4As shown, the liquid storage device further comprises a buffer partition 41 installed in the cavity 16 to divide the cavity 16 into a buffer chamber 40 and a liquid storage chamber 17, and the first delivery pipe 20 and the second delivery pipe 30 are both installed in the liquid storage chamber 17. In particular, the buffer partition 41 is provided with a first through hole 411 and a second through hole 412, the first delivery pipe 20 is inserted into the first through hole 411 towards the other end of the bottom of the cavity 16, the second delivery pipe 30 is inserted into the second through hole 412 towards the other end of the bottom of the cavity 16, and the buffer partition 41 is fixedly connected to the side wall of the side shell 12 close to the bottom shell 13, so that the buffer chamber 40 is formed between the buffer partition 41 and the bottom shell 13, and the liquid storage chamber 17 is formed between the buffer partition 41 and the top shell 11, so that the buffer chamber 40 and the liquid storage chamber 17 are gas-isolated.

[0054] As shown in the drawings, Figure 1 the inner wall surface of the bottom shell 13 is a concave curved surface concave in the direction away from the top shell 11, preferably an arc-shaped curved surface, and the gaseous refrigerant entering the buffer chamber 40 from the first delivery pipe 20 is buffered by the concave curved surface and flows to the pipe inlet of the second delivery pipe 30.

[0055] In the liquid storage device, the input port 14 and the output port 15 are both opened on the top shell 11, so that the length of the gas outlet pipe 200 between the gas outlet of the liquid storage device and the gas inlet of the vertical scroll compressor can be shortened as much as possible, and the flow length of the gas can be shortened as much as possible. In order to prevent the gaseous refrigerant entering the cavity 16 from the gas inlet of the top shell 11 from directly flowing into the open end of the first delivery pipe 20 (that is, in order to prevent liquid drops carried by the gaseous refrigerant from directly entering the open end of the first delivery pipe 20 into the compression chamber of the vertical scroll compressor to cause liquid hammer), it is necessary to ensure that the gaseous refrigerant entering from the gas inlet cannot directly enter the open end of the first delivery pipe 20, and the open end of the first delivery pipe 20 and the gas inlet are staggered with each other. Alternatively, as shown in the drawings, Figure 2 and Figure 3 the liquid storage device of the first embodiment further comprises a shunt partition 70, the first shunt partition 70 is located in the cavity 16 to separate the gas inlet and the open end of the first delivery pipe 20, and one end of the second delivery pipe 30 is connected in communication with the gas outlet through the first shunt partition 70 through the hole 72, so that the gaseous refrigerant entering from the gas inlet directly flows to the first shunt partition 70, and the liquid drops carried by the gaseous refrigerant adhere to the first shunt partition 70, so that the liquid drops cannot directly fall into the open end of the first delivery pipe 20. Figure 3 As shown, the first shunt partition 70 is provided with a first shunt hole 71, which can be one or multiple, and the first shunt hole 71 is staggered with the open end of the first delivery pipe 20, so that the gaseous refrigerant blown to the first shunt partition 70 flows to the liquid storage chamber 17 through the first shunt hole 71, and then enters the open end of the first delivery pipe 20. Figure 2(The gas flow path is shown by the middle arrow), and after enough droplets adhering to the first diversion baffle 70 accumulate, they will drip from the first diversion hole 71 and accumulate at the bottom of the liquid storage chamber 17. Alternatively, in this liquid storage device, not only is the open end of the first delivery pipe 20 offset from the air inlet, but the liquid storage device also includes a diversion baffle 70, which is located in the cavity 16 to separate the air inlet from the open end of the first delivery pipe 20. One end of the second delivery pipe 30 passes through the through hole 72, passes through the first diversion baffle 70, and connects to the air outlet. The first diversion hole 71 is also offset from the open end of the first delivery pipe 20.

[0056] Example 2:

[0057] Compared with the liquid storage device of Example 1, the liquid storage device of Example 2 has the following differences.

[0058] like Figure 5 As shown, one of the inlet 14 and the outlet 15 is located on the top shell 11, and the other of the inlet 14 and the outlet 15 is located on the side shell 12. In the liquid storage device of this embodiment 2, the inlet 14 is an air inlet and the outlet 15 is an air outlet. In the liquid storage device of embodiment 2, the air inlet is located on the side shell 12, and the opening of the open end of the first delivery pipe 20 is higher than the air inlet. Therefore, the gaseous refrigerant blown into the cavity 16 from the air inlet will first contact the pipe wall of the first delivery pipe 20 and / or the second delivery pipe 30. Then, the liquid droplets carried in the gaseous refrigerant will adhere to the pipe wall of the first delivery pipe 20 and / or the second delivery pipe 30. Subsequently, the liquid droplets will gather and fall down the pipe wall to the bottom of the liquid storage chamber 17 for storage.

[0059] Compared with the liquid storage device of Example 1, the liquid storage device of Example 2 is the same in all aspects except for the above-mentioned structural differences, so it will not be described again here.

[0060] Example 3:

[0061] Compared with the liquid storage device of Example 1, the liquid storage device of Example 3 has the following differences.

[0062] like Figure 6 As shown, one of the inlet 14 and the outlet 15 is located on the top shell 11, and the other is located on the side shell 12. In the liquid storage device of this embodiment three, the inlet 14 is an air inlet, and the outlet 15 is an air outlet. In the liquid storage device of embodiment three, the air inlet is located on the top shell 11, and the open end of the first delivery pipe 20 is offset from the air inlet. This prevents the gaseous refrigerant entering the cavity 16 from the air inlet of the top shell 11 from directly flowing into the open end of the first delivery pipe 20. In other words, it prevents the liquid droplets carried by the gaseous refrigerant from directly entering the opening end of the first delivery pipe 20 and entering the compression chamber of the vertical scroll compressor, thus preventing liquid slugging.

[0063] As shown in Figure 6 and Figure 7 , the liquid storage device further comprises a second flow separation baffle 80, which is located in the cavity 16 to separate the gas inlet from the open end of the first conveying pipe 20. Thus, the gaseous refrigerant entering from the gas inlet directly flows to the second flow separation baffle 80, and the liquid droplets carried by the gaseous refrigerant adhere to the second flow separation baffle 80, so that the liquid droplets will not directly fall into the open end of the first conveying pipe 20. As shown in Figure 7 , the second flow separation baffle 80 is provided with a second flow hole 81, which can be one or multiple. The second flow hole 81 is staggered with the open end of the first conveying pipe 20. The gaseous refrigerant blown to the second flow separation baffle 80 flows to the cavity 16 from the second flow hole 81, and then enters the open end of the first conveying pipe 20 (the gas flow path is shown by the arrow in Figure 6 ), and the liquid droplets adhering to the second flow separation baffle 80 will drip from the second flow hole 81 to the bottom of the liquid storage chamber 17 after gathering enough.

[0064] The liquid storage device of the third embodiment is the same as that of the first embodiment except for the above structural differences, and thus will not be described here.

[0065] Embodiment Four

[0066] The liquid storage device of the fourth embodiment is different from the liquid storage devices of the first, second and third embodiments in the following aspects.

[0067] As shown in Figures 8 to 10 , the liquid storage device further comprises a buffer tank 42, which is assembled in the inner cavity 16. The buffer tank 42 forms a buffer chamber 40. The top wall of the buffer tank 42 is provided with a third through hole 421 and a fourth through hole 422. The other end of the first conveying pipe 20 towards the bottom of the cavity 16 is inserted into the third through hole 421, and the other end of the second conveying pipe 30 towards the bottom of the cavity 16 is inserted into the fourth through hole 422. The gaseous refrigerant entering the buffer chamber 40 formed by the buffer tank 42 from the first conveying pipe 20 is buffered and then conveyed to the vertical scroll compressor from the second conveying pipe 30. In this embodiment, the buffer tank 42 is an independent component. When assembled, the buffer tank 42 can be first assembled with the first conveying pipe 20 and the second conveying pipe 30 to form an integral whole, and then the integral whole of the buffer tank 42, the first conveying pipe 20 and the second conveying pipe 30 is assembled into the inside of the shell, and finally the top cover 11 is sealed to complete the assembly, which improves the assembly efficiency.

[0068] In the fourth embodiment, the circumferential outer wall of the buffer tank 42 is spaced apart from the inner wall of the side shell 12. Also, the bottom of the buffer tank 42 can be directly placed on the bottom shell 13, or the bottom of the buffer tank 42 can be spaced apart from the bottom shell 13. The gaseous refrigerant carrying the liquid droplets enters the cavity 16, and the liquid droplets will fall to the bottom of the cavity 16.

[0069] The liquid storage device of the fourth embodiment is compared with the liquid storage devices of the first, second and third embodiments. Except for the above different structures, the rest of the structures are the same, and thus are not described here again.

[0070] According to another aspect of the embodiments of the present application, a vertical scroll compressor is provided. Specifically, the vertical scroll compressor includes the liquid storage device as described above.

[0071] According to still another aspect of the present application, a refrigeration cycle system is provided. Specifically, the refrigeration cycle system includes the vertical scroll compressor as described above.

[0072] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid storage device, characterized in that, include: The shell has a cavity, and the upper part of the shell has an inlet and an outlet. The shell includes a top shell, a bottom shell and a side shell. The top shell and the bottom shell are respectively connected to the two ends of the side shell to form a cylindrical shell. A buffer partition is installed in the cavity, dividing the cavity into a buffer chamber and a liquid storage chamber. A buffer chamber is formed between the buffer partition and the bottom shell. The first delivery pipe and the second delivery pipe are both located in the liquid storage chamber. The first delivery pipe has an open end facing the top of the cavity, and the other end facing the bottom of the cavity is connected to the buffer chamber. The second delivery pipe has one end facing the top of the cavity connected to the output port, and the other end facing the bottom of the cavity connected to the buffer chamber. The inner wall surface of the bottom shell is a concave curved surface that curves downward away from the top shell; The first delivery pipe near the buffer chamber and / or the second delivery pipe near the buffer chamber have oil return holes. The pipe wall with the oil return holes has an oil passage communicating with the oil return holes. The pipe wall of the outlet pipe connected to the second delivery pipe has a docking oil passage communicating with the oil passage. The oil passage is connected to the oil groove of the compression blade of the vertical scroll compressor through the docking oil passage.

2. The liquid storage device according to claim 1, characterized in that, The buffer partition has a first through hole and a second through hole. The other end of the first conveying pipe facing the bottom of the cavity is inserted into the first through hole, and the other end of the second conveying pipe facing the bottom of the cavity is inserted into the second through hole.

3. The liquid storage device according to claim 2, characterized in that, The buffer baffle is connected to the inner wall of the side shell near the bottom shell.

4. The liquid storage device according to any one of claims 1-3, characterized in that, Both the first and second conveying pipes are straight pipes. The inner diameter of the first conveying pipe is larger than that of the second conveying pipe. Furthermore, the cross-sectional area of ​​the first conveying pipe channel is S1, and the cross-sectional area of ​​the second conveying pipe is S2, with 1.5 ≤ S1 / S2 ≤ 4.

5. The liquid storage device according to claim 1, characterized in that, The diameter of the return oil hole is greater than or equal to 0.5 mm and less than or equal to 2.0 mm.

6. The liquid storage device according to any one of claims 1-3, characterized in that, The liquid storage device also includes a filter screen, which is disposed in the pipes of the first delivery pipe and / or the second delivery pipe.

7. The liquid storage device according to any one of claims 1-3, characterized in that, Both the input and output ports are located on the top shell. The open end of the first delivery pipe is offset from the air inlet; and / or, The liquid storage device also includes a first diversion baffle, which is located in the cavity to separate the air inlet from the open end of the first delivery pipe. One end of the second delivery pipe passes through the first diversion baffle and is connected to the air outlet. The first diversion baffle has a first diversion hole, which is offset from the open end of the first delivery pipe.

8. The liquid storage device according to any one of claims 1-3, characterized in that, The air inlet is located on the side shell, and the opening of the open end of the first delivery pipe is higher than the air inlet; Alternatively, the air inlet is located on the top shell, and the open end of the first delivery pipe is offset from the air inlet. And / or, the liquid storage device further includes a second diversion baffle, which is located in the cavity to separate the air inlet from the open end of the first delivery pipe. The second diversion baffle has a second diversion hole, which is offset from the open end of the first delivery pipe.

9. A vertical scroll compressor, characterized in that, The vertical scroll compressor includes a liquid storage device as described in any one of claims 1-8.

10. The vertical scroll compressor according to claim 9, characterized in that, The cross-sectional area of ​​the first conveying pipe is S1, the cross-sectional area of ​​the second conveying pipe is S2, and the displacement of the vertical scroll compressor is V, with S1 / V ≥ 0.11 cm². -1 S² / V ≥ 0.08 cm -1 .

11. A refrigeration cycle system, characterized in that, The refrigeration cycle system includes the vertical scroll compressor as claimed in claim 10.

Images