Reservoir filter assembly and reservoir

Abstract

The application provides a liquid accumulator filter assembly and a liquid accumulator. The filter screen in the liquid accumulator filter assembly is arranged at the air inlet end of the liquid accumulator shell and connected with the filter screen fixing frame below. The filter screen fixing frame comprises a fixing frame body and a liquid prevention part. The main body of the fixing frame body is provided with a plurality of flow holes distributed in the circumferential direction, and the fixing part is provided with a positioning hole for fixing the air inlet end of the air outlet connecting pipe and a plurality of air guide holes distributed in the circumferential direction around the positioning hole. The liquid prevention part is located between the fixing part and the filter screen, and prevents the refrigerant filtered by the filter screen from directly entering the air inlet end of the air outlet connecting pipe. The cavity formed between the liquid prevention part and the fixing part is a suction cavity, the inner cavity of the liquid accumulator shell below the filter screen fixing frame forms a distribution cavity, and the suction cavity is communicated with the distribution cavity through the plurality of air guide holes on the fixing part. The refrigerant filtered by the filter screen enters the distribution cavity through the plurality of flow holes; and the refrigerant gas separated from the liquid in the distribution cavity enters the suction cavity through the plurality of air guide holes and is sucked into the air inlet end of the air outlet connecting pipe.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioning refrigeration equipment, and particularly relates to a filter assembly of a liquid accumulator and the liquid accumulator. BACKGROUND

[0002] The liquid accumulator is arranged at the suction pipe part of an air conditioner compressor and functions to filter, mute and separate gas and liquid. The liquid accumulator is composed of a shell, an air inlet pipe, an air outlet connector, an air outlet elbow, a filter screen assembly and a fixing plate. The evaporated refrigerant enters the shell of the liquid accumulator through the air inlet pipe and is filtered by the filter screen and then is sucked into the compressor through the air outlet connector and the air outlet elbow. Since the air outlet connector extends into the shell from the bottom of the shell, the air inlet end of the air outlet connector is prone to vibrate and tilt during processing and use. Therefore, the existing liquid accumulator needs to be additionally provided with a separate fixing plate inside the shell to position the air outlet connector. However, the fixing plate has the problems of complex assembly process, difficulty in assembly and high cost.

[0003] Although some people have proposed a scheme of fixing the upper end of the air outlet connector in the stretching groove of the filter screen fixing seat, in the scheme, the upper end of the air outlet connector is blocked by the stretching groove, so it is necessary to open a plurality of air inlet holes in the sidewall of the air inlet end of the air outlet connector to suck the refrigerant into the compressor. The throttling of the sidewall air inlet holes not only increases the noise, but also affects the suction power of the compressor. In addition, some people have proposed a positioning structure including a positioning sleeve and a support frame below the filter screen assembly. The support frame is welded to the inner side of the first end cover and is located below the filter screen assembly. The positioning sleeve is arranged in the central through hole of the support frame, and the upper end of the air outlet connector is fixed in the positioning sleeve. The four legs of the support frame form a medium passage, and the refrigerant enters the suction pipe through the medium passage and the through hole at the top of the positioning sleeve. Although the scheme realizes the fixation of the upper end of the air outlet connector, the positioning structure and the filter screen are two independent components. In other words, the scheme only moves the existing fixing plate in the middle of the shell of the liquid accumulator to the inner side of the first end cover, and the assembly of the positioning sleeve and the support frame in the positioning structure is complex, so it still has the problems of complex assembly process, difficulty in assembly and high cost of the positioning structure. Further, in the scheme, the gas-liquid mixed state refrigerant filtered by the filter screen is easily sucked into the air inlet end of the air outlet connector through the open medium passage between the four legs. The liquid refrigerant will enter the compressor pump body through the air outlet connector and the air outlet elbow, thereby causing the liquid strike problem of the compressor.

[0004] In addition, although Chinese patent CN2804735Y also describes the connection of the upper end of the single pipe part with the filter screen assembly, on the one hand, the patent does not give the specific assembly relationship between the upper end of the single pipe part and the filter screen assembly, which is not practical. On the other hand, it is also unclear how the refrigerant stored in the cylinder is sucked into the single suction connector. SUMMARY

[0005] The present application provides a filter assembly for a liquid accumulator and the liquid accumulator.

[0006] To achieve the above object, the present application provides a filter assembly for a liquid accumulator, which comprises a filter screen fixing frame and a filter screen.

[0007] The filter screen fixing frame is radially installed in the liquid accumulator and comprises a fixing frame body and a liquid-proof part. The central part of the fixing frame body forms a fixing part, the outer side part adjacent to the fixing part forms a main body part, the main body part has a plurality of flow holes distributed in the circumferential direction, the fixing part has a positioning hole for fixing the gas outlet pipe and a plurality of air guide holes distributed in the circumferential direction around the positioning hole. The liquid-proof part is located between the fixing part and the filter screen, preventing the refrigerant filtered by the filter screen from directly entering the gas inlet end of the gas outlet pipe installed on the positioning hole. The liquid-proof part protrudes towards the side where the filter screen is located, and the cavity formed between the liquid-proof part and the fixing part is an air suction cavity. The inner cavity of the liquid accumulator shell below the filter screen fixing frame forms a liquid distribution cavity, and the air suction cavity is communicated with the liquid distribution cavity through the plurality of air guide holes on the fixing part. The refrigerant filtered by the filter screen enters the liquid distribution cavity through the plurality of flow holes on the main body part; the refrigerant gas separated from the liquid in the liquid distribution cavity enters the air suction cavity through the plurality of air guide holes and is sucked into the gas inlet end of the gas outlet pipe connected to the positioning hole.

[0008] According to an embodiment of the present application, the fixing part is stretched and protruded away from the side where the liquid-proof part is located, the center of the protrusion forms the positioning hole, and the plurality of air guide holes are distributed in the circumferential direction on the stretched peripheral wall of the fixing part; the sum of the areas of the plurality of air guide holes is greater than or equal to the area of the positioning hole.

[0009] According to an embodiment of the present application, the stretched peripheral wall gradually inclines towards the center of the positioning hole in the stretching direction, and each air guide hole on the stretched peripheral wall forms an inclined air passage.

[0010] According to an embodiment of the present application, the shortest axial vertical distance between the end face of the gas inlet end of the gas outlet pipe and the inner surface of the liquid-proof part is greater than or equal to 3 mm, and the inner surface of the liquid-proof part refers to the surface of the liquid-proof part facing the air suction cavity.

[0011] According to an embodiment of the present application, the fixing part has one positioning hole, and the center line of the positioning hole coincides with the axis of the liquid accumulator shell; or the fixing part has two positioning holes, and the center line of one of the positioning holes is symmetric to the center line of the other positioning hole with respect to the axis of the liquid accumulator shell.

[0012] According to an embodiment of the present application, the outer edge of the main body part of the fixed frame body has a ring-shaped stretching groove protruding away from the side where the filter screen is located, and the filter screen is assembled and fixed in the ring-shaped stretching groove; or the outer edge of the main body part has a bent-over fixing part bending towards the side where the filter screen is located, and the bent-over fixing part presses the filter screen; or the liquid accumulator filter assembly further comprises a pressing ring for pressing the filter screen against the fixed frame body.

[0013] According to an embodiment of the present application, the positioning hole has a bent-over part, and the air inlet end of the air outlet pipe is sleeved with the bent-over part.

[0014] The present application further provides another liquid accumulator filter assembly, which comprises a filter screen fixed frame and a filter screen, the filter screen is arranged at the air inlet end of the liquid accumulator shell and connected with the filter screen fixed frame located below the filter screen;

[0015] The filter screen fixed frame is radially installed in the liquid accumulator shell and comprises a fixed frame body and a fixed part. The central part region of the fixed frame body forms a liquid-proof part, the outer side region adjacent to the liquid-proof part forms a main body part, and the main body part has a plurality of flow holes distributed in the circumferential direction. The fixed part is arranged opposite to the liquid-proof part, and the fixed part has a positioning hole for fixing the air inlet end of the air outlet pipe and a plurality of air guide holes distributed in the circumferential direction around the positioning hole. The liquid-proof part located between the filter screen and the fixed part prevents the refrigerant filtered by the filter screen from directly entering the air inlet end of the air outlet pipe installed on the positioning hole. The cavity formed between the liquid-proof part and the fixed part is an air suction cavity, and the inner cavity of the liquid accumulator shell located below the filter screen fixed frame forms a liquid distribution cavity. The air suction cavity is communicated with the liquid distribution cavity through the plurality of air guide holes on the fixed part. The refrigerant filtered by the filter screen enters the liquid distribution cavity through the plurality of flow holes on the main body part. The refrigerant gas separated from liquid in the liquid distribution cavity enters the air suction cavity through the plurality of air guide holes and is sucked into the air inlet end of the air outlet pipe connected to the positioning hole. According to an embodiment of the present application, the fixed part is stretched and protruded away from the side where the liquid-proof part is located; and / or the liquid-proof part is protruded towards the side where the filter screen is located.

[0016] The shortest axial vertical distance between the end face of the air inlet end of the air outlet pipe and the inner surface of the liquid-proof part is greater than or equal to 3 mm, and the inner surface of the liquid-proof part refers to the surface of the liquid-proof part facing the air suction cavity.

[0017] According to an embodiment of the present application, when the fixed part is stretched and protruded away from the side where the liquid-proof part is located, the center of the stretched protrusion forms the positioning hole, the stretched end face is welded to the body part on the inner side of the flow hole, the stretched peripheral wall gradually inclines towards the center of the positioning hole in the stretching direction, and each air guide hole located on the stretched peripheral wall forms an inclined air passage.

[0018] The present application further provides another liquid accumulator filter assembly, which comprises a filter screen fixed frame and a filter screen, the filter screen is arranged at the air inlet end of the liquid accumulator shell and connected with the filter screen fixed frame located below the filter screen;

[0019] The filter screen fixing frame is radially installed in the liquid accumulator shell and comprises a fixing frame body, a liquid preventing part and a fixing part. The fixing frame body has a through hole in a central region and a plurality of flow holes circumferentially surrounding the through hole. The liquid preventing part is connected to the fixing frame body and is located between the through hole and the filter screen. The fixing part is connected to the fixing frame body and is oppositely arranged to the liquid preventing part. The fixing part has a positioning hole for fixing an air outlet pipe inlet end and a plurality of air guiding holes circumferentially distributed around the positioning hole. The liquid preventing part located between the filter screen and the fixing part prevents the refrigerant filtered by the filter screen from directly entering the air outlet pipe inlet end installed on the positioning hole through the through hole. A cavity formed by the fixing part and the liquid preventing part is an air suction cavity. An inner cavity of the liquid accumulator shell below the filter screen fixing frame is formed as a liquid separation cavity. The air suction cavity is connected to the liquid separation cavity through the plurality of air guiding holes on the fixing part. The refrigerant filtered by the filter screen enters the liquid separation cavity through the plurality of flow holes on the fixing frame body. The refrigerant gas separated from liquid in the liquid separation cavity enters the air suction cavity through the plurality of air guiding holes and is then sucked into the air outlet pipe inlet end connected to the positioning hole.

[0020] In another aspect, the application further provides a liquid accumulator comprising a liquid accumulator shell, an air inlet pipe, the above-mentioned liquid accumulator filter assembly, an air outlet pipe and an air outlet elbow. The air inlet end of the liquid accumulator shell is formed with an air inlet pipe hole connected to the air inlet pipe. The air outlet end of the liquid accumulator shell is formed with an air outlet pipe hole connected to the air outlet pipe. The air inlet pipe is connected to the air inlet pipe hole of the liquid accumulator shell. The liquid accumulator filter assembly separates the inner space of the liquid accumulator shell into an air inlet cavity above and a liquid separation cavity below. The air inlet end of the air outlet pipe is fixed to the positioning hole on the filter screen fixing frame and is connected to the air suction cavity. The air outlet end of the air outlet pipe is connected to the air outlet pipe hole of the liquid accumulator shell. The air outlet elbow is assembled to the air outlet end of the air outlet pipe.

[0021] According to an embodiment of the application, the liquid accumulator shell is any one of a spinning type, a three-section type or a two-section type.

[0022] In summary, the liquid accumulator filter assembly provided by the application has the filter screen fixing frame integrated with the air outlet pipe inlet end fixing. The air outlet pipe inlet end fixing based on the filter screen fixing frame not only greatly reduces the manufacturing cost of the liquid accumulator, but also simplifies the assembly process of the liquid accumulator. Further, the liquid preventing part between the fixing part and the filter screen of the fixing frame body avoids the refrigerant filtered by the filter screen from directly entering the air outlet pipe inlet end. On the other hand, the liquid preventing part and the fixing part also surround the air suction cavity connected to the liquid separation cavity through the plurality of air guiding holes. The surrounding air suction cavity forces the refrigerant in the liquid separation cavity to enter the air suction cavity through the air guiding holes and then be sucked into the air outlet pipe inlet end. The indirect refrigerant gas suction based on the air suction cavity solves the problem of liquid compression impact caused by the easy suction of liquid refrigerant in the existing liquid accumulator. In addition, the further throttling of the air guiding holes and the surrounding of the air suction cavity both improve the flow rate of the refrigerant entering the air outlet pipe inlet end, which not only makes the air suction smooth, but also has a large flow rate.

[0023] In order to make the above and other objects, features and advantages of the present application more comprehensible, specific preferred embodiments will be described in detail below along with accompanying drawings. Those skilled in the art will appreciate that the description herein is by way of example and not intended to limit the scope of the application. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figures 1A-1C Fig. 1 shows the structure of a conventional liquid accumulator.

[0025] Figure 2 Fig. 2 shows the structure of a liquid accumulator according to an embodiment of the present application.

[0026] Figure 3 Fig. 3 shows a cross-sectional view of a liquid accumulator filter assembly according to an embodiment of the present application. Figure 2

[0027] Figure 4 Fig. 4 shows a perspective view of a bracket body according to an embodiment of the present application. Figure 3 Fig. 5 shows a top view of the bracket body of Fig. 4. Fig. 6 shows a bottom view of the bracket body of Fig. 4.

[0028] Fig. 7 shows a perspective view of a bracket body according to another embodiment of the present application. Figure 5 Fig. 8 shows a top view of the bracket body of Fig. 7. Figure 3 Fig. 9 shows a bottom view of the bracket body of Fig. 7. Fig. 10 shows a perspective view of a bracket body according to another embodiment of the present application.

[0029] Fig. 11 shows a top view of the bracket body of Fig. 10. Figure 6A Fig. 12 shows a bottom view of the bracket body of Fig. 10. Figure 6B Fig. 13 shows a perspective view of a bracket body according to another embodiment of the present application. Figure 6C Fig. 14 shows a top view of the bracket body of Fig. 13. Figure 6D Fig. 15 shows a bottom view of the bracket body of Fig. 13. Fig. 16 shows a cross-sectional view of a liquid accumulator filter assembly according to another embodiment of the present application.

[0030] Fig. 17 shows a cross-sectional view of a liquid accumulator filter assembly according to another embodiment of the present application. Figure 7 Fig. 18 shows a cross-sectional view of a liquid accumulator filter assembly according to another embodiment of the present application. Figure 2 Fig. 19 shows a flow diagram of refrigerant flow in a liquid accumulator according to an embodiment of the present application. Fig. 20 shows a flow diagram of refrigerant flow in a liquid accumulator according to another embodiment of the present application.

[0031] Fig. 21 shows a flow diagram of refrigerant flow in a liquid accumulator according to another embodiment of the present application. Figure 8 Fig. 22 shows a diagram of a simulation area in a liquid accumulator during a simulation test. Fig. 23 shows a diagram of a simulation area in a liquid accumulator during a simulation test.

[0032] Fig. 24 shows a diagram of a simulation area in a liquid accumulator during a simulation test. Figure 9 Fig. 25 shows a diagram of a liquid accumulator structure in which refrigerant is drawn in through intake holes in the side wall of an outlet pipe. Fig. 26 shows a diagram of a liquid accumulator structure in which refrigerant is drawn in through intake holes in the side wall of an outlet pipe.

[0033] Fig. 27 shows a diagram of a liquid accumulator structure in which refrigerant is drawn in through intake holes in the side wall of an outlet pipe. Figure 10 Fig. 28 shows a cross-sectional view of a liquid accumulator filter assembly according to another embodiment of the present application. Fig. 29 shows a cross-sectional view of a liquid accumulator filter assembly according to another embodiment of the present application.

[0034] Fig. 30 shows a cross-sectional view of a liquid accumulator filter assembly according to another embodiment of the present application. Figure 11 Fig. 31 shows a cross-sectional view of a liquid accumulator filter assembly according to another embodiment of the present application. Figure 10 Fig. 32 shows a diagram of the structure of a fixed portion according to an embodiment of the present application. Fig. 33 shows a diagram of the structure of a fixed portion according to another embodiment of the present application.

[0035] Fig. 34 shows a diagram of the structure of a fixed portion according to another embodiment of the present application. Figure 12 Fig. 35 shows a diagram of the structure of a fixed portion according to another embodiment of the present application. Figure 11 Fig. 36 shows a diagram of the structure of a fixed portion according to another embodiment of the present application. Fig. 37 shows a diagram of the structure of a fixed portion according to another embodiment of the present application.

[0036] Fig. 38 shows a diagram of the structure of a fixed portion according to another embodiment of the present application. Figure 13 Fig. 39 shows a diagram of the structure of a fixed portion according to another embodiment of the present application. Figure 14 Fig. 40 shows a diagram of the structure of a fixed portion according to another embodiment of the present application.

[0037] Figure 15 Fig. 3 shows a schematic view of a filter assembly of a liquid accumulator according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] Figures 1A-1C Fig. 1 shows a schematic view of three existing liquid accumulator structures.

[0039] Figure 1A The three-stage liquid accumulator has a shell 10' including a first end cover 10a', a cylinder body 10b' and a second end cover 10c'. The first end cover 10a' has an air inlet pipe hole for connecting an air inlet pipe 20', and the second end cover 10c' has an air outlet pipe hole for assembling an air outlet pipe 40'. A filter screen assembly 30' is installed at the joint of the first end cover 10a' and the cylinder body 10b'. The air outlet pipe 40' is assembled in the air outlet pipe hole, and an air outlet elbow 50' is sleeved on the air outlet pipe 40'. A separate fixing plate 60' is arranged in the cylinder body 10b' to fix the middle part of the air outlet pipe 40'.

[0040] Figure 1B The two-stage liquid accumulator has a shell 10' including an upper cylinder body 10_a' and a lower cylinder body 10_b'. A filter screen assembly 30' is installed in the upper cylinder body 10_a'. A separate fixing plate 60' is arranged in the lower cylinder body 10_b' to fix the middle part of the air outlet pipe 40'.

[0041] Figure 1C The spinning liquid accumulator has a shell 10' which is integrally formed by spinning the two ends of a pipe. A filter screen assembly 30' is installed on one side of the shell 10' close to the air inlet pipe hole. A separate fixing plate 60' is arranged below the filter screen assembly 30' to fix the middle part of the air outlet pipe 40'.

[0042] In order to stably connect the air outlet pipe 40' in the shell 10' of the liquid accumulator, the three existing liquid accumulator structures all have a separate fixing plate 60' arranged in the shell of the liquid accumulator to fix the middle part of the air outlet pipe. However, the arrangement of the fixing plate 60' not only increases the assembly process and difficulty of the liquid accumulator, but also greatly increases the manufacturing cost of the liquid accumulator. Further, in the three existing liquid accumulators, the air inlet end of the air outlet pipe below the filter screen assembly 30' is prone to sucking in the mixed-state refrigerant just entering the liquid separation cavity, thereby bringing the liquid-state refrigerant into the compressor and causing the problem of liquid knock of the compressor.

[0043] Therefore, the present application provides a liquid accumulator filter mechanism and a liquid accumulator which can avoid the suction of liquid-state refrigerant and have low cost.

[0044] Embodiment One

[0045] As Figure 2As shown, the liquid accumulator provided by the embodiment includes a liquid accumulator shell 10, an air inlet pipe 20, a liquid accumulator filter assembly 30, an air outlet connector 40, and an air outlet elbow 50. The air inlet end of the liquid accumulator shell 10 is formed with an air inlet pipe hole for connecting the air inlet pipe 20, and the air outlet end of the liquid accumulator shell 10 is formed with an air outlet connector hole for connecting the air outlet connector 40. The air inlet pipe 20 is connected to the air inlet pipe hole of the liquid accumulator shell. The liquid accumulator filter assembly 30 separates the inner cavity of the liquid accumulator shell into an air inlet cavity 101 above and a liquid separation cavity 102 below. The air inlet end 41 of the air outlet connector is fixed to the positioning hole 111 on the filter screen fixing frame 1 and communicates with the air inlet cavity 100, and the air outlet end 42 is connected to the air outlet connector hole on the liquid accumulator shell. The air outlet elbow 50 is assembled to the air outlet end 42 of the air outlet connector.

[0046] Specifically, as shown, Figures 3-5 the liquid accumulator filter assembly 30 provided by the embodiment includes a filter screen fixing frame 1 and a filter screen 2, which is arranged at the air inlet end of the liquid accumulator shell and connected to the filter screen fixing frame 1 below.

[0047] The filter screen fixing frame 1 is radially installed in the liquid accumulator shell 10 and includes a fixing frame body 1_0 and a liquid prevention part 13 without any through hole. The center part of the fixing frame body 1_0 is formed with a fixing part 11, and the outer side adjacent to the fixing part 11 is formed with a main body part 12 having a plurality of flow holes 121 distributed in the circumferential direction, and the fixing part 11 has a positioning hole 111 for fixing the air inlet end 41 of the air outlet connector and a plurality of air guide holes 112 distributed in the circumferential direction around the positioning hole 111. The liquid prevention part 13 is located between the fixing part 11 and the filter screen 2, preventing the filtered refrigerant from directly entering the air inlet end 41 of the air outlet connector installed on the positioning hole 111. The liquid prevention part 13 protrudes towards the side where the filter screen 2 is located, and the cavity formed between the liquid prevention part 13 and the fixing part 11 is the air inlet cavity 100. The inner cavity of the liquid accumulator shell below the filter screen fixing frame 1 forms a liquid separation cavity 102, and the air inlet cavity 100 communicates with the liquid separation cavity 102 through the plurality of air guide holes 112 on the fixing part 11.

[0048] The refrigerant enters the air inlet cavity 101 through the air inlet pipe 20, is filtered by the filter screen 2, and then enters the liquid separation cavity 102 through the plurality of flow holes 121 on the main body part 12, as shown by the solid arrows in Figure 7 Based on the blocking isolation of the air inlet cavity 100, the refrigerant entering the liquid separation cavity 102 is fully separated into gas and liquid, and the refrigerant gas after gas-liquid separation enters the air inlet cavity 100 through the plurality of air guide holes 112 and is sucked into the air inlet end 41 of the air outlet connector connected to the positioning hole, as shown by the hollow arrows in Figure 7 .

[0049] In the embodiment, the orientation or positional relationship indicated by "upper" and "lower" is based on Figure 2The shown liquid reservoir placement direction; wherein the gas inlet pipe is connected to the upper end of the liquid reservoir shell, and the gas outlet elbow is connected to the lower end of the liquid reservoir shell. However, this is only for the convenience of describing the present application and simplifying the description, and is not intended to 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 on the application.

[0050] The positioning hole on the fixing part 11 in the liquid reservoir filter assembly 30 of the present embodiment provides an assembly position for the fixing of the gas inlet end 41 of the gas outlet pipe, so that the fixed frame body 10 can realize integrated fixing of the filter screen 2 and the gas inlet end 41 of the gas outlet pipe. There is no need to set a separate fixing structure in the liquid reservoir shell 10 to fix the gas outlet pipe 40, which greatly reduces the manufacturing cost of the liquid reservoir. Further, the liquid reservoir filter assembly provided by the present embodiment is a whole piece, which only needs to be assembled once with the liquid reservoir shell 10 to realize the fixing of the filter screen 2 and the gas inlet end 41 of the gas outlet pipe at the same time, which greatly simplifies the assembly process of the liquid reservoir. Furthermore, the liquid reservoir filter assembly 30 provided by the present embodiment also effectively prevents the liquid refrigerant from entering the compressor through the gas outlet pipe 40 and the gas outlet elbow 50, avoiding the problem of compressor liquid strike. The following will be described in detail in combination with the drawings. Figure 7 The following will be described in detail.

[0051] In the existing liquid reservoir structure, the gas inlet end of the gas outlet pipe directly communicates with the distribution chamber (such as Figure 1A As shown in FIG. 1C) or directly communicates with the distribution chamber through an open medium passage. Based on the suction force of the gas outlet pipe, the mixed-state refrigerant entering the distribution chamber will be sucked into the gas inlet end of the gas outlet pipe before it can be subjected to gas-liquid separation, thereby bringing liquid refrigerant into the compressor to cause the problem of liquid strike.

[0052] However, in the present embodiment, the suction chamber 100 is formed between the fixing part 11 and the liquid prevention part 13, which isolates the distribution chamber 102 and the gas inlet end 41 of the gas outlet pipe. Based on the isolation and blocking of the suction chamber 100, the mixed refrigerant entering the distribution chamber 102 will be fully subjected to gas-liquid separation in the large-volume distribution chamber 102; and the refrigerant gas after gas-liquid separation will enter the suction chamber 100 through the plurality of gas guide holes 112, and then be sucked into the gas inlet end 41 of the gas outlet pipe. Therefore, in the present embodiment, the gas inlet end 41 of the gas outlet pipe no longer directly communicates with the distribution chamber 102, but needs to indirectly communicate with the distribution chamber 102 through the suction chamber 100 and the plurality of gas guide holes 112, which is an indirect type of refrigerant gas suction mode. This suction mode can effectively avoid the problem of compressor liquid strike caused by the suction of liquid refrigerant, greatly improving the stability and service life of the compressor.

[0053] In addition, throttling of the gas guide hole 112 increases the flow rate of the refrigerant entering the suction chamber 100, thereby increasing the flow rate of the refrigerant entering the gas inlet end 41 of the gas outlet pipe. The small volume of the suction chamber 100 also forces the refrigerant to quickly enter the gas inlet end 41 of the gas outlet pipe, thereby further increasing the flow rate. The large increase in flow rate and the suction of the refrigerant gas based on the large diameter of the gas inlet end 41 of the gas outlet pipe necessarily increases the output flow rate of the gas outlet elbow 50, thereby improving the performance of the compressor.

[0054] The following will compare the difference in refrigerant transmission performance between the liquid accumulator provided in the embodiment (the liquid accumulator shown in Figure 2 and the conventional liquid accumulator shown in Figure 1C under the same working conditions through simulation.

[0055] I. Working conditions for simulation

[0056] ①Structural parameters of the simulation sample: both liquid accumulators adopt a spinning structure; the diameter of the accumulator shell is φ70*1.2mm; the volume of the shell is 36088mm 3 ; the diameter of the gas inlet pipe is Φ16*1.0; the diameter of the gas outlet pipe is φ20*0.8mm;

[0057] ②Refrigerant parameters for simulation: 410a refrigerant is used and its density is 0.5g / cm 3 ; a uniform volume flow rate is set at the gas inlet end of the liquid accumulator, which is 0.013m 3 / s;

[0058] ③Simulate the flow rate of the refrigerant entering the gas inlet end of the gas outlet pipe and the flow rate of the refrigerant output from the output end of the gas outlet pipe.

[0059] II. Simulation data:

[0060]

[0061] Among them, the simulation area is composed of the partial area of the distribution chamber near the gas guide hole 112 and the partial area of the suction chamber, as shown in Figure 8 A.

[0062] III. Analysis of simulation data

[0063] The simulation data also confirms that under the same working conditions, the liquid accumulator provided in the embodiment (the liquid accumulator shown in Figure 2 has a larger flow rate of the refrigerant at the gas inlet end 41 of the gas outlet pipe and a larger volume flow rate output from the gas outlet elbow 50.

[0064] In the embodiment, the fixed part 11 stretches the protrusion away from the side where the liquid-proof part 13 is located, the center of the protrusion forms a positioning hole 111, and a plurality of air guide holes 112 are distributed along the circumferential direction on the stretched circumferential wall 113 of the fixed part, and the sum of the areas S2 of the plurality of air guide holes 112 is greater than or equal to the area S1 of the positioning hole 111. This arrangement ensures that the refrigerant flow entering the suction chamber 100 from the plurality of air guide holes 112 is greater than or equal to the refrigerant flow entering the gas outlet pipe inlet end 41, eliminating the influence of the hole diameter of the air guide hole 112 on the output flow of the reservoir.

[0065] Figure 9 The reservoir structure shown in the prior art is through the gas outlet connector side wall air inlet hole to suck in the refrigerant. In this structure, the centers of the plurality of air inlet holes on the side wall are located on the same cross section of the gas outlet pipe, and the plurality of refrigerant flows sucked in are directly opposite, the resistance is large, the loss is large, not only seriously affects the flow rate of the refrigerant, but also brings a lot of noise. In the embodiment, as shown in Figure 3 The stretched circumferential wall 113 gradually inclines to the center of the positioning hole 111 along the stretching direction, and each air guide hole located on the stretched circumferential wall 113 forms an inclined air passage. The plurality of refrigerant gas flows entering the suction chamber 100 along the inclined air passage meet on the side surface, the resistance is small, and the energy loss is small. Therefore, compared with the prior art reservoir structure shown in Figure 9 The reservoir provided in the embodiment can use smaller compressor power to achieve the same volumetric flow of refrigerant output, greatly reducing the energy consumption of the compressor.

[0066] In the embodiment, the downward stretching protrusion of the fixed part 11 increases the storage volume in the suction chamber 100. However, the present application does not make any limitation on this. In other embodiments, the fixed part can not be stretched, that is, it is flush with the main body part; the protrusion based on the liquid-proof part forms the suction chamber, as shown in Figure 6A In order to make the suction chamber 100 have sufficient storage volume, in the embodiment, as shown in FIG. 1, the shortest axial vertical distance H between the end surface of the gas outlet connector inlet end 41 and the inner surface of the liquid-proof part 2 is greater than or equal to 3 mm, and the inner surface of the liquid-proof part refers to the surface of the liquid-proof part facing the side of the suction chamber 100. Preferably, the shortest axial vertical distance H between the end surface of the gas outlet connector inlet end 41 and the inner surface of the liquid-proof part 2 is equal to 5 mm. However, the present application does not make any limitation on this.

[0067] In order to facilitate the assembly of the gas outlet connector 40, in the embodiment, as shown in Figure 2 and Figure 3 The positioning hole 111 has a flange part 114 on it and the flange part faces the side where the filter screen 2 is located, and the gas outlet connector inlet end 41 is sleeved in the flange part 114. However, the present application does not make any limitation on this. In other embodiments, the flange part on the positioning hole 111 can also face the side away from the side where the filter screen 2 is located, as shown inFigure 6A In other embodiments, the fixed hole can also not be provided with a flange part, and the air outlet connecting pipe directly inserts into the positioning hole.

[0068] In the embodiment, as shown in Figure 3 and Figure 5 The fixed frame body 1_0 is a reverse stretching structure, the outer edge of the main body part 12 has an annular stretching groove 14 protruding away from the filter screen 2, and the filter screen 2 is assembled and fixed in the annular stretching groove 14. Specifically, after the filter screen 2 is assembled in the annular stretching groove 14, the fixed frame body 1_0 is closed, and the annular stretching groove 14 clamps and presses the filter screen 2 to fix it. However, the present application does not make any limitation on this. In other embodiments, as shown in Figure 6B The outer edge of the main body part 12 has a flange fixing part 14' bent towards the side where the filter screen 2 is located, and the flange fixing part 14' presses the filter screen 2. Alternatively, as shown in Figure 6C The liquid reservoir filter assembly 30 further comprises a pressing ring 3 arranged on the side of the filter screen 2 close to the air inlet end of the liquid reservoir shell, and the pressing ring 3 presses and fixes the filter screen 2 to the main body part 12. Alternatively, the filter screen can be directly welded to the filter screen fixed frame. Alternatively, in a three-section liquid reservoir, the filter screen can also be attached to the main body part on the fixed frame body and pressed into the first end cover of the liquid reservoir shell, and the stepped surface of the flared part of the first end cover and the main body part press and fix the filter screen, thereby further simplifying the assembly process of the liquid reservoir filter assembly in the three-section liquid reservoir.

[0069] In the embodiment, the flow hole 121 on the main body part 12 is a circular hole. However, the present application does not make any limitation on this. In other embodiments, the flow hole 121 on the main body part 12 can also be an oval hole (as shown in Figure 6D ) or a fan-shaped hole.

[0070] In the embodiment, the liquid prevention part 13 protrudes towards the side where the filter screen 2 is located, and the top of the protrusion can also be flat. However, the present application does not make any limitation on this. In other embodiments, the liquid prevention part can also be a curved surface structure, as shown in Figure 6B .

[0071] In the embodiment, as shown in Figure 2As shown, the reservoir is a single-cylinder compressor reservoir, and it includes only one exhaust pipe 40. Therefore, in this embodiment, the fixing part 11 has only one positioning hole 111, and the center line of the positioning hole 111 coincides with the axis of the reservoir housing 10. However, the present invention does not limit this in any way. In other embodiments, when the reservoir is a dual-cylinder compressor reservoir, it may include two exhaust pipes; correspondingly, the fixing part will also have two positioning holes, and the center line of one positioning hole is symmetrical about the axis of the reservoir housing with the center line of the other positioning hole. Alternatively, in other embodiments, the dual-cylinder compressor reservoir may also have only one exhaust pipe, and the exhaust bend has two branch pipes, in which case the filter screen holder only needs to be provided with one positioning hole.

[0072] like Figure 2 As shown, although this embodiment uses a spinning-type liquid receiver as an example, the present invention does not limit this. In other embodiments, the liquid receiver filter assembly provided by the present invention can also be assembled in a two-stage or three-stage liquid receiver housing to achieve integrated fixation of the filter screen and the inlet end of the outlet pipe, and to prevent the intake of liquid refrigerant, thereby simplifying the assembly process, reducing costs, and improving compressor performance.

[0073] Example 2

[0074] This embodiment is basically the same as Embodiment 1 and its variations, except that the connection relationship between the main body 11, the fixing part 12, and the liquid-proof part 13 inside the filter screen fixing frame 1 is different in this embodiment. Similarly, in this embodiment, the liquid-proof part 13 has no through holes.

[0075] like Figure 10 , Figure 11 as well as Figure 12As shown, the liquid reservoir filter assembly 30 provided in this embodiment includes a filter screen holder 1 and a filter screen 2. The filter screen 2 is disposed at the air inlet end of the liquid reservoir housing and connected to the filter screen holder 1 located below it. The filter screen holder 1 is radially installed inside the liquid reservoir housing and includes a holder body 1_0 and a fixing part 11. A liquid-proof part 13 is formed in the central region of the holder body 1_0, and a main body 12 is formed in the outer region adjacent to the liquid-proof part 13. The main body 12 has a plurality of flow holes 121 distributed circumferentially. The fixing part 11 is disposed opposite to the liquid-proof part 13. The fixing part 11 has a positioning hole 111 for fixing the air inlet end 41 of the air outlet pipe and a plurality of air guide holes 112 distributed circumferentially around the positioning hole 111. The liquid-proof part 13 located between the filter screen 2 and the fixing part 11 prevents the refrigerant filtered by the filter screen 2 from directly entering the air inlet end 41 of the air outlet pipe installed on the positioning hole 111. The cavity formed between the anti-liquid part 13 and the fixing part 11 is the air intake chamber 100. The inner cavity of the liquid storage housing located below the filter screen fixing frame 1 forms the liquid distribution chamber 102. The air intake chamber 100 is connected to the liquid distribution chamber 102 through multiple air guide holes 112 on the fixing part 22.

[0076] The refrigerant filtered by filter screen 2 enters the liquid distribution chamber 102 through multiple flow holes 121 on the main body 12; the refrigerant gas after gas-liquid separation in the liquid distribution chamber 102 enters the suction chamber 100 through multiple air guide holes 112 and is sucked into the air outlet inlet end 41 connected to the positioning hole 111.

[0077] Similar to Embodiment 1, the liquid receiver filter assembly 30 provided in this embodiment not only integrates the filter screen 2 and the air outlet pipe inlet end 41 into one unit, but also the enclosed suction chamber 100 effectively prevents liquid refrigerant from being drawn into the compressor, thus solving the compressor liquid slugging problem.

[0078] In this embodiment, the fixing part 11 is stretched and protrudes away from the side where the liquid-proof part 13 is located, and the liquid-proof part 13 also protrudes towards the side where the filter screen 2 is located, thereby greatly increasing the volume of the air intake chamber 100. However, the present invention does not limit this in any way. In other embodiments, only the fixing part may protrude while the liquid-proof part does not protrude, such as... Figure 13 As shown; or only the liquid-proof part is raised while the fixing part is not raised.

[0079] like Figures 10-12 As shown, for the fixed part 11, the center of the stretching protrusion forms a positioning hole 111, the stretching end face 115 is welded to the body part 12 inside the flow hole 121, the stretching peripheral wall 113 gradually tilts towards the center of the positioning hole 111 along the stretching direction, and each air guide hole 112 on the stretching peripheral wall 113 forms an inclined air passage to reduce the refrigerant counterflow resistance.

[0080] Similarly, to ensure sufficient storage volume within the suction chamber 100, in this embodiment, the shortest axial vertical distance H between the end face of the air inlet end 41 of the air outlet connector and the inner surface of the liquid-proof part 2 is greater than or equal to 3 mm. The inner surface of the liquid-proof part refers to the surface of the liquid-proof part facing the suction chamber 100. Preferably, the shortest axial vertical distance H between the end face of the air inlet end 41 of the air outlet connector and the inner surface of the liquid-proof part 2 is equal to 5 mm. However, the present invention does not impose any limitation on this.

[0081] Figure 14 The diagram shown is a schematic diagram of a liquid reservoir filter assembly provided in another embodiment of the present invention. In this structure, the fixing part 11 has two positioning holes 111, which can be applied to a liquid reservoir of a dual-cylinder compressor.

[0082] Example 3

[0083] This embodiment is basically the same as Embodiment 1 and its variations, except that in this embodiment, both the fixing part 11 and the liquid-proof part 13 are connected to the fixing frame body 1_0. This structure allows for a wide range of adjustment of the volume of the suction chamber 100 by adjusting the stretching height of the fixing part 11 and the liquid-proof part 13, thereby better meeting the design requirements of the liquid reservoir in terms of performance such as flow rate, flow velocity, and noise. Similarly, in this embodiment, the liquid-proof part 13 has no through holes.

[0084] Specifically, such as Figure 15 As shown, the liquid reservoir filter assembly 30 provided in this embodiment includes a filter screen holder 1 and a filter screen 2. The filter screen 2 is disposed at the air inlet end of the liquid reservoir housing and connected to the filter screen holder 1 located below it.

[0085] The filter holder 1 is radially installed inside the liquid reservoir housing and includes a holder body 1_0, a liquid-proof part 13, and a fixing part 11. The holder body 1_0 has a through hole 1_01 located in the central area and a plurality of flow holes 121 circumferentially surrounding the through hole 1_01. The liquid-proof part 13 is connected to the holder body 1_0 and located between the through hole 1_01 and the filter 2. The fixing part 11 is connected to the holder body 1_0 and is disposed opposite to the liquid-proof part 13. The fixing part 11 has a positioning hole 111 for fixing the air inlet end 41 of the air outlet connector and a plurality of air guide holes 112 circumferentially distributed around the positioning hole 111. The liquid-proof part 13 located between the filter 2 and the fixing part 11 prevents the refrigerant filtered by the filter 2 from directly entering the air inlet end 41 of the air outlet connector installed on the positioning hole 111 through the through hole 1_01. The cavity formed by the connection between the fixing part 11 and the liquid-proof part 13 through the through hole 1_01 and the two surrounding each other is the air intake chamber 100. The inner cavity of the liquid storage housing located below the filter screen fixing frame 1 is formed as the liquid distribution chamber 102. The air intake chamber 100 is connected to the liquid distribution chamber 102 through multiple air guide holes 112 on the fixing part 11.

[0086] The refrigerant filtered by the filter screen 2 enters the separation cavity 102 through the plurality of flow holes 121 on the fixed frame body 1_0; the refrigerant gas separated by the separation cavity 102 enters the suction cavity 100 through the plurality of gas guide holes 112 and is sucked into the gas outlet pipe gas inlet end 41 connected to the positioning hole.

[0087] In summary, the filter screen fixed frame is an integral part of the filter screen fixing and the gas outlet pipe gas inlet end fixing. Based on the gas outlet pipe gas inlet end fixing of the filter screen fixed frame, the manufacturing cost of the liquid accumulator is greatly reduced, and the assembly process of the liquid accumulator is simplified. Further, the liquid prevention part between the fixed part and the filter screen on the filter screen fixed frame avoids the refrigerant filtered by the filter screen directly entering the gas outlet pipe gas inlet end. On the other hand, the liquid prevention part and the fixed part also surround the suction cavity, and the suction cavity is connected to the separation cavity through the plurality of gas guide holes. The surrounding suction cavity forces the refrigerant in the separation cavity to enter the suction cavity through the gas guide holes, and then is sucked into the gas outlet pipe gas inlet end. The indirect refrigerant gas suction based on the suction cavity well solves the compression liquid strike problem caused by the easy suction of liquid refrigerant in the existing liquid accumulator. In addition, the further throttling of the gas guide hole and the surrounding of the suction cavity both improve the flow rate of the refrigerant entering the gas outlet pipe gas inlet end, which not only makes the suction smooth but also has a large flow.

[0088] Although the present application has been disclosed by the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make some changes and modifications without departing from the spirit and scope of the present application, and therefore the protection scope of the present application shall be subject to the scope required by the claims.

Claims

1. A reservoir filter assembly, comprising: It includes a filter screen holder and a filter screen, wherein the filter screen is disposed at the air inlet end of the liquid reservoir housing and connected to the filter screen holder located below it; The filter screen holder is radially installed inside the liquid reservoir housing, and the filter screen holder includes: The fixed frame body has a fixed part in the central region and a main body in the outer region adjacent to the fixed part. The main body has a plurality of flow holes distributed circumferentially. The fixed part has a positioning hole for fixing the air inlet end of the air outlet pipe and a plurality of air guide holes distributed circumferentially around the positioning hole. The liquid-proof section, located between the fixing section and the filter screen, prevents the refrigerant filtered by the filter screen from directly entering the air inlet end of the air outlet pipe installed on the positioning hole. The liquid-proof section protrudes towards the side where the filter screen is located. The cavity formed by the liquid-proof section and the fixing section is the suction chamber. The inner cavity of the liquid reservoir housing located below the filter screen fixing frame forms the liquid distribution chamber. The suction chamber isolates the liquid distribution chamber from the air inlet end of the air outlet pipe. The enclosed suction chamber is connected to the liquid distribution chamber only through multiple air guide holes on the fixing section. Due to the isolation and obstruction of the suction chamber, the mixed refrigerant entering the liquid distribution chamber will undergo gas-liquid separation in the liquid distribution chamber. The refrigerant gas after gas-liquid separation enters the suction chamber from bottom to top through multiple air guide holes on the fixing section. After being filtered by the filter, the refrigerant enters the liquid distribution chamber through multiple flow holes on the main body; the refrigerant gas after gas-liquid separation in the liquid distribution chamber enters the suction chamber through multiple air guide holes and is drawn into the air inlet end of the air outlet pipe connected to the positioning hole.

2. The reservoir filter assembly of claim 1, wherein, The fixing part is stretched and protruded to the side away from the liquid-proof part, and a positioning hole is formed in the center of the protrusion. Multiple air guide holes are distributed circumferentially on the stretched peripheral wall of the fixing part; the sum of the areas of the multiple air guide holes is greater than or equal to the area of ​​the positioning hole.

3. The reservoir filter assembly of claim 2, wherein, The stretching peripheral wall gradually tilts towards the center of the positioning hole along the stretching direction, and each air guide hole on the stretching peripheral wall forms an inclined air passage.

4. The reservoir filter assembly of claim 1, wherein, The shortest axial vertical distance between the end face of the air inlet end of the air outlet pipe and the inner surface of the liquid-proof part is greater than or equal to 3 mm. The inner surface of the liquid-proof part refers to the surface of the liquid-proof part facing the air intake chamber.

5. The reservoir filter assembly of claim 1, wherein, The fixing part has a positioning hole and the center line of the positioning hole coincides with the axis of the reservoir housing; or, the fixing part has two positioning holes, the center line of one positioning hole is symmetrical about the axis of the reservoir housing with the center line of the other positioning hole.

6. The reservoir filter assembly of claim 1, wherein, On the main body of the mounting frame, the outer edge of the main body has an annular stretching groove that protrudes away from the filter screen, and the filter screen is assembled and fixed in the annular stretching groove; or, the outer edge of the main body has a flanged fixing part that bends toward the side where the filter screen is located, and the flanged fixing part presses the filter screen; or, the liquid reservoir filter assembly further includes a pressure ring that presses the filter screen to the main body of the mounting frame.

7. The reservoir filter assembly of claim 1, wherein, The positioning hole has a flanged part, and the air inlet end of the air outlet pipe is sleeved on the flanged part.

8. A reservoir filter assembly characterized by, It includes a filter screen holder and a filter screen, wherein the filter screen is disposed at the air inlet end of the liquid reservoir housing and connected to the filter screen holder located below it; The filter screen holder is radially installed inside the reservoir housing and includes: The fixed frame body has a liquid-proof part in the central area and a main body in the outer area adjacent to the liquid-proof part. The main body has multiple flow holes distributed circumferentially. The fixed part is arranged opposite to the liquid-proof part, and the fixed part has a positioning hole for fixing the air outlet pipe and a plurality of air guide holes distributed around the positioning hole. The liquid-proof part between the filter screen and the fixed part prevents the filtered refrigerant from directly entering the air inlet end of the air outlet pipe installed on the positioning hole. The cavity formed between the liquid-proof part and the fixed part is an air suction cavity. The inner cavity of the liquid accumulator shell below the filter screen holder forms a liquid distribution cavity. The air suction cavity is isolated from the liquid distribution cavity and the air inlet end of the air outlet pipe. The surrounding air suction cavity is only connected to the liquid distribution cavity through the plurality of air guide holes on the fixed part. Based on the isolation and blocking of the air suction cavity, the mixed refrigerant entering the liquid distribution cavity is subjected to gas-liquid separation in the liquid distribution cavity. The refrigerant gas after gas-liquid separation passes through the plurality of air guide holes on the fixed part from bottom to top and enters the air suction cavity. The filtered refrigerant passes through the plurality of flow holes on the main body and enters the liquid distribution cavity. The refrigerant gas after gas-liquid separation in the liquid distribution cavity enters the air suction cavity through the plurality of air guide holes and is sucked into the air inlet end of the air outlet pipe connected to the positioning hole.

9. The reservoir filter assembly of claim 8, wherein, The fixed part is stretched to a side away from the liquid-proof part; and / or, the liquid-proof part is protruded to a side where the filter screen is located. The shortest axial vertical distance between the end face of the air inlet end of the air outlet pipe and the inner surface of the liquid-proof part is greater than or equal to 3 mm. The inner surface of the liquid-proof part refers to the surface of the liquid-proof part facing the air suction cavity.

10. The reservoir filter assembly of claim 9, wherein, When the fixed part is stretched to a side away from the liquid-proof part, the center of the stretched protrusion forms the positioning hole. The stretched end face is welded to the main body on the inner side of the flow hole. The stretched peripheral wall is gradually inclined to the center of the positioning hole along the stretching direction. Each air guide hole on the stretched peripheral wall forms an inclined air passage.

11. A reservoir filter assembly characterized by, The filter screen holder and the filter screen are arranged. The filter screen is arranged at the air inlet end of the liquid accumulator shell and connected to the filter screen holder below. The filter screen holder is radially arranged in the liquid accumulator shell and includes: The holder body has a through hole in the central region and a plurality of flow holes around the through hole in the circumferential direction. The liquid-proof part is connected to the holder body and located between the through hole and the filter screen. The fixed part is connected to the holder body and arranged opposite to the liquid-proof part. The fixed part has a positioning hole for fixing the air inlet end of the air outlet pipe and a plurality of air guide holes distributed around the positioning hole. The liquid-proof part between the filter screen and the fixed part prevents the filtered refrigerant from directly entering the air inlet end of the air outlet pipe installed on the positioning hole. The cavity formed between the fixed part and the liquid-proof part is an air suction cavity. The inner cavity of the liquid accumulator shell below the filter screen holder forms a liquid distribution cavity. The air suction cavity is isolated from the liquid distribution cavity and the air inlet end of the air outlet pipe. The surrounding air suction cavity is only connected to the liquid distribution cavity through the plurality of air guide holes on the fixed part. Based on the isolation and blocking of the air suction cavity, the mixed refrigerant entering the liquid distribution cavity is subjected to gas-liquid separation in the liquid distribution cavity. The refrigerant gas after gas-liquid separation passes through the plurality of air guide holes on the fixed part from bottom to top and enters the air suction cavity. The filtered refrigerant passes through the plurality of flow holes on the main body and enters the liquid distribution cavity.

12. A reservoir characterized by, The refrigerant gas after gas-liquid separation in the liquid distribution cavity enters the air suction cavity through the plurality of air guide holes and is sucked into the air inlet end of the air outlet pipe connected to the positioning hole. It includes: The reservoir shell is formed with an air inlet pipe hole for connecting an air inlet pipe at an air inlet end and an air outlet pipe hole for connecting an air outlet pipe at an air outlet end; The air inlet pipe is connected to the air inlet pipe hole of the reservoir shell; The reservoir filter assembly as claimed in any one of claims 1 to 11, wherein the reservoir filter assembly divides an inner portion of the reservoir shell into an air inlet cavity above and a liquid distribution cavity below; The air outlet pipe is fixed to the positioning hole of the filter screen fixing frame at an air inlet end and communicates with the air inlet cavity, and an air outlet end is connected to the air outlet pipe hole of the reservoir shell; The air outlet elbow is assembled at the air outlet end of the air outlet pipe.

13. The reservoir of claim 12, wherein, The reservoir shell is any one of a spinning type, a three-section type or a two-section type.

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