Gas-liquid separators and refrigeration equipment

Abstract

This invention provides a gas-liquid separator and a refrigeration device. The gas-liquid separator includes a shell and a filter assembly. A partition is provided inside the shell to divide its inner cavity into a first chamber and a second chamber arranged vertically. The first and second chambers are interconnected at the partition. The shell has an air inlet and an air outlet. The filter assembly is located in the first chamber and includes a filter screen. The filter screen horizontally divides the first chamber into an air inlet chamber and a filtration chamber. The air inlet connects to the air inlet chamber, and the air outlet connects to the filtration chamber. This invention achieves gas-liquid separation through the cooperation of the filter screen and the partition, resulting in a simple structure, low cost, and high separation efficiency.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and in particular to a gas-liquid separator and refrigeration equipment. Background Technology

[0002] With the advancement of society, economy, and technology, the overall demand for high performance and low energy consumption in the refrigeration industry is constantly increasing, thus placing new demands on the innovation and breakthroughs of refrigeration systems. The dual-evaporator refrigeration system equipped with a gas-liquid separator is a new type of refrigeration system that can meet the needs of more functions and higher performance. Currently, there is an urgent need for a low-cost, high-efficiency gas-liquid separator. Summary of the Invention

[0003] The main objective of this invention is to provide a gas-liquid separator and refrigeration equipment, aiming to solve the current technical problem of urgently needing a low-cost, high-efficiency gas-liquid separator.

[0004] To achieve the above objectives, the present invention provides a gas-liquid separator, comprising:

[0005] The housing has a partition inside, which divides the inner cavity of the housing into a first chamber and a second chamber arranged vertically. The first chamber and the second chamber are connected to each other at the partition. The housing has an air inlet and an air outlet.

[0006] A filter assembly is disposed in the first chamber. The filter assembly includes a filter screen that horizontally divides the first chamber into an air intake chamber and a filter chamber. The air intake port is connected to the air intake chamber, and the exhaust port is connected to the filter chamber.

[0007] Optionally, the filter screen is arranged in a ring shape to define the filter chamber inside it and the air intake chamber between it and the housing.

[0008] Optionally, the filter assembly further includes a ring-shaped support portion, the lower end of which is connected to the upper side of the partition. The filter is installed on the support portion and adapted to the support portion to form the filter cavity.

[0009] Optionally, the support includes multiple support frames arranged in a ring at intervals, and the lower end of each support frame is connected to the upper side of the partition. The filter screen is sleeved on the outer periphery of the multiple support frames to form the filter cavity.

[0010] Optionally, the upper end of each of the support frames is spaced apart from the upper end of the housing;

[0011] The support part further includes a support plate and a connecting pipe. The support plate is located at the upper end of the plurality of support frames and has a connecting hole that connects to the filter chamber. The connecting pipe connects the connecting hole and the exhaust port.

[0012] Optionally, the partition has flow guide holes in the upper and lower parts, and the flow guide holes connect the first chamber and the second chamber.

[0013] Optionally, the flow guide hole includes a first flow guide hole located in the region of the partition corresponding to the filter chamber, the first flow guide hole connecting the filter chamber and the second chamber.

[0014] Optionally, the guide hole includes a second guide hole located at the periphery of the partition and corresponding to the area of ​​the air intake chamber.

[0015] Optionally, the second flow guide hole extends laterally through the outer periphery of the partition, so that a notch is formed on one side of the partition near the inner wall of the housing.

[0016] Optionally, multiple second guide holes are provided, and the multiple second guide holes are spaced apart along the circumference of the partition.

[0017] Optionally, the air inlet is connected to an air inlet pipe, which is curved along the circumference of the housing.

[0018] Optionally, one end of the air intake pipe connected to the air intake port extends into the air intake chamber and is tangent to the side wall of the housing.

[0019] Optionally, the shell is cylindrical, and its diameter is d, 10mm ≤ d ≤ 50mm; and / or,

[0020] The height of the shell is H, where 30mm ≤ H ≤ 300mm.

[0021] Optionally, the air inlet is located on the upper side of the partition, and the distance from the air inlet to the bottom wall of the housing is L, and the height of the housing is H, where 0.6≤L / H≤0.9.

[0022] Optionally, the distance from the partition to the bottom wall of the shell is a, and the height of the shell is H, where 0.3 ≤ a / H ≤ 0.7.

[0023] Optionally, the bottom wall of the housing is provided with a drain port that communicates with the second chamber.

[0024] In addition, the present invention also provides a refrigeration device, including the gas-liquid separator as described in any of the above claims.

[0025] Optionally, the mass of the refrigerant in the refrigeration equipment is x grams, and the volume of the refrigerant is V1 milliliters, and the volume of the inner cavity of the shell is V milliliters, where 0.1V1≤V≤V1

[0026] Optionally, the refrigeration equipment further includes a compressor, the compressor comprising:

[0027] shell;

[0028] A cylinder body, disposed within the outer casing, has a first air intake hole at the bottom of its working chamber and a second air intake hole on its side wall, the second air intake hole being connected to an air intake pipe; and,

[0029] Piston assembly, including a piston movably disposed within the working chamber;

[0030] The first air intake hole is connected to the inner cavity of the outer shell, and the air intake pipe is connected to the exhaust port.

[0031] Optionally, the piston has a first dead center located at the bottom of the cylinder and a second dead center located away from the bottom of the cylinder during its active stroke;

[0032] The distance between the second air intake and the first stop point is L, and the distance between the first stop point and the second stop point is S, where 0.5S < L.

[0033] Optionally, the refrigeration device is a refrigerator.

[0034] In this design, the gas-liquid mixed refrigerant entering the intake chamber through the air inlet passes through the filter screen into the filtration chamber. As the gas-liquid mixed refrigerant passes through the filter screen, the filter screen obstructs the passage of tiny droplets. Thus, the gaseous refrigerant passes through the filter screen and flows from the filtration chamber to the exhaust port; while the liquid refrigerant condenses on the filter screen and, under its own weight, flows towards the partition plate, and then flows from the connection point between the first and second chambers to the second chamber, achieving separation of the gaseous and liquid refrigerant. Furthermore, the partition plate reduces the probability of contact between the gas-liquid mixed refrigerant in the air passage chamber and the liquid refrigerant in the second chamber, preventing an increase in the proportion of liquid refrigerant in the gas-liquid mixed refrigerant in the air passage chamber and improving the separation efficiency of the gas-liquid mixed refrigerant. This invention achieves gas-liquid separation through the cooperation of the filter screen and the partition plate, resulting in a simple structure, low cost, and high separation efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the gas-liquid separator of the present invention;

[0037] Figure 2 for Figure 1 Schematic diagram of a cross-section of a gas-liquid separator;

[0038] Figure 3 for Figure 2 A three-dimensional structural diagram of the middle filter assembly and partition;

[0039] Figure 4 for Figure 2 A three-dimensional structural diagram of the middle filter assembly;

[0040] Figure 5 for Figure 2 Schematic diagram of the middle partition;

[0041] Figure 6 This is a schematic diagram of the internal structure of a compressor in an embodiment of the refrigeration equipment of the present invention;

[0042] Figure 7 for Figure 6 A partial cross-sectional view of the compressor.

[0043] Explanation of icon numbers:

[0044] label name label name 100 gas-liquid separator 22 Support section 1 case 221 support frame 11 First chamber 222 support plate 11a air intake chamber 222a Connecting hole 11b Filter chamber 223 Connecting pipe 12 Second chamber 3 intake manifold 13 air intake 200 compressor 14 exhaust port 210 shell 15 drain port 220 Cylinder block 16 partition 220a Working chamber 161 Guide hole 220b First air intake port 161a First guide hole 220c Second air intake port 161b Second guide hole 230 Inhalation tube 2 Filter assembly 240 piston 21 Filter

[0045] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0048] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0049] Society as a whole is constantly increasing its demands for high performance and low energy consumption in the refrigeration industry, which in turn puts forward new requirements for the innovation and breakthroughs of refrigeration systems. The dual evaporator refrigeration system equipped with a gas-liquid separator is a new type of refrigeration system that can meet the needs of more functions and higher performance. At present, there is an urgent need for a low-cost, high-efficiency gas-liquid separator.

[0050] In view of this, the present invention provides a gas-liquid separator and a refrigeration device, aiming to solve the technical problem of the urgent need for a low-cost, high-efficiency gas-liquid separator. Figures 1 to 7 Specific embodiments of the gas-liquid separator and refrigeration equipment provided by the present invention.

[0051] Please see Figures 1 to 3 The gas-liquid separator 100 provided by the present invention includes a housing 1 and a filter screen 21 assembly 2. The housing 1 is provided with a partition 16, which is used to divide the inner cavity of the housing 1 into a first chamber 11 and a second chamber 12 arranged vertically. The first chamber 11 and the second chamber 12 are interconnected at the partition 16. The housing 1 is provided with an air inlet 13 and an exhaust outlet 14. The filter screen 21 assembly 2 is disposed in the first chamber 11. The filter screen 21 assembly 2 includes a filter screen 21, which divides the first chamber 11 horizontally into an air inlet chamber 11a and a filter chamber 11b. The air inlet 13 is connected to the air inlet chamber 11a, and the exhaust outlet 14 is connected to the filter chamber 11b.

[0052] In this design, the gas-liquid mixed refrigerant entering the intake chamber 11a through the intake port 13 passes through the filter screen 21 into the filter chamber 11b. As the gas-liquid mixed refrigerant passes through the filter screen 21, the filter screen 21 obstructs the passage of tiny droplets. Thus, the gaseous refrigerant passes through the filter screen 21 and flows from the filter chamber 11b to the exhaust port 14; while the liquid refrigerant condenses on the filter screen 21 and, under its own weight, flows towards the partition plate 16, and then flows from the connection point between the first chamber 11 and the second chamber 12 to the second chamber 12, achieving separation of the gaseous and liquid refrigerant. Furthermore, the partition plate 16 reduces the probability of contact between the gas-liquid mixed refrigerant in the intake chamber 11a and the liquid refrigerant in the second chamber 12, preventing an increase in the proportion of liquid refrigerant in the gas-liquid mixed refrigerant in the intake chamber 11a and improving the separation efficiency of the gas-liquid mixed refrigerant. The present invention achieves gas-liquid separation through the cooperation of the filter screen 21 and the partition plate 16. It has a simple structure, low cost, and can achieve high separation efficiency.

[0053] It should be noted that the filter 21 horizontally divides the first chamber 11 into the air inlet chamber 11a and the filter chamber 11b. The air inlet chamber 11a and the filter chamber 11b can be arranged side-by-side horizontally, or they can be in other forms. Specifically, in this embodiment, the filter 21 is annularly arranged to define the filter chamber 11b inside it and to define the air inlet chamber 11a between it and the housing 1. That is, the filter chamber 11b is surrounded by the air inlet chamber 11a, so that when the volume of the first chamber 11 is constant, the surface area of ​​the filter 21 can be maximized, thereby increasing the contact area between the gas-liquid mixed refrigerant in the air inlet chamber 11a and the filter 21, thus increasing the volume of gas-liquid mixed refrigerant passing through the filter 21 per unit time and improving the gas-liquid separation capacity of the gas-liquid separator 100. Furthermore, the exhaust port 14 is connected to an exhaust pipe.

[0054] Furthermore, to prevent the filter screen 21 from deforming during use and reducing filtration efficiency, in this embodiment, the filter screen 21 assembly 2 further includes a ring-shaped support portion 22. The lower end of the support portion 22 is connected to the upper side of the partition plate 16. The filter screen 21 is installed on the support portion 22 and is adapted to the support portion 22 to form the filter cavity 11b. It is understood that the arrangement of the support portion 22 is not limited, as long as it is ring-shaped to adapt to the filter screen 21 and provide support for the filter screen 21.

[0055] In one embodiment, the support portion 22 is a support ring protruding from the upper side of the partition plate 16, and the filter screen 21 is sleeved on the support ring. The support ring restricts the radial deformation of the filter screen 21, thereby ensuring the filtration efficiency of the gas-liquid separator 100.

[0056] Specifically, in this embodiment, please refer to Figure 4 The support portion 22 includes multiple support frames 221 arranged in a ring at intervals, with the lower end of each support frame 221 connected to the upper side of the partition plate 16. The filter screen 21 is fitted around the outer periphery of the multiple support frames 221 to form the filter cavity 11b. In this embodiment, the multiple support frames 221 are arranged in a ring at intervals, and the filter screen 21 is fitted around the outer side of the multiple support frames 221. This arrangement avoids the filter screen 21 from deforming radially inward. Furthermore, it reduces the area of ​​the support portion 22 obstructing the filter screen 21, thereby increasing the communication area between the filter screen 21 and the filter cavity 11b. This approach, while preventing deformation of the filter screen 21, also reduces the obstruction of the filter screen 21 by the support portion 22.

[0057] Furthermore, to facilitate the installation of the filter screen 21 onto the support portion 22, in this embodiment, the upper ends of each support frame 221 are spaced apart from the upper end of the housing 1. The support portion 22 further includes a support plate 222 and a connecting pipe 223. The support plate 222 is located at the upper end of the plurality of support frames 221 and forms a connecting hole 222a connecting the filter chamber 11b. The connecting pipe 223 connects the connecting hole 222a and the exhaust port 14. In this solution, when assembling the filter screen 21 assembly 2, it is only necessary to insert one end of the plurality of support frames 221 with the support plate 222 into the filter screen 21, which facilitates installation and improves assembly efficiency.

[0058] Furthermore, placing the connection between the first chamber 11 and the second chamber 12 within the housing 1 increases the likelihood of leakage due to compromised integrity of the housing 1. Therefore, in this embodiment, the partition 16 has upward-facing guide holes 161 connecting the first chamber 11 and the second chamber 12. Additionally, the guide holes 161 on the partition plate allow the liquid refrigerant dripping from the filter 21 onto the partition 16 to enter the second chamber 12 through the guide holes 161, enabling the condensed liquid refrigerant to be separated from the refrigerant in the first chamber 11 more quickly.

[0059] It is understandable that when the liquid refrigerant condenses on the filter screen 21, some of it may pass through the filter screen 21 and enter the filter chamber 11b. Therefore, to promptly input the condensed liquid refrigerant in the filter chamber 11b into the second chamber 12, please refer to [reference needed]. Figure 5 The guide hole 161 includes a first guide hole 161a located in the region of the partition 16 corresponding to the filter chamber 11b, and the first guide hole 161a connects the filter chamber 11b and the second chamber 12. In this way, the liquid refrigerant condensed in the filter chamber 11b can be input into the second chamber 12 through the first guide hole 161a, preventing it from being re-introduced into the gaseous refrigerant in the filter chamber 11b. Specifically, in this embodiment, the lower end of the filter screen 21 abuts against the upper end of the partition 16, allowing the liquid refrigerant accumulated on the upper side of the partition 16 and located in the air inlet chamber 11a to pass through the lower end of the filter screen 21 and enter the second chamber 12 through the guide hole 161.

[0060] It should be noted that, based on the scheme that "the support part 22 includes a plurality of support frames 221, the plurality of support frames 221 are arranged in a ring at intervals, and the lower end of each support frame 221 is connected to the upper side of the partition plate 16, and the filter screen 21 is sleeved on the outer periphery of the plurality of support frames 221 to form the filter cavity 11b", the first guide hole 161a is located between the plurality of support frames 221.

[0061] Furthermore, to facilitate the rapid entry of the liquid refrigerant accumulated on the upper side of the partition 16 and located in the air intake chamber 11a into the second chamber 12, this design includes a second guide hole 161b located on the periphery of the partition 16 and corresponding to the area of ​​the air intake chamber 11a. That is, the second guide hole 161b connects the air intake chamber 11a and the second chamber 12. Specifically, the second guide hole 161b extends vertically. Thus, the liquid refrigerant accumulated on the upper side of the partition 16 and located in the air intake chamber 11a can directly enter the second chamber 12 through the second guide hole 161b, reducing the residence time of the accumulated liquid refrigerant in the air intake chamber 11a. It is understood that the number of second guide holes 161b is not limited; one or more can be provided. In this embodiment, multiple second guide holes 161b are provided, and the multiple second guide holes 161b are arranged at intervals along the circumference of the partition 16 to further accelerate the condensed liquid refrigerant from the air inlet 11a into the second chamber 12.

[0062] Furthermore, it should be noted that the shape of the second guide hole 161b is not limited; it can be a circular hole, a square hole, or other forms, as long as it can connect the air intake chamber 11a and the second chamber 12. In this embodiment, the second guide hole 161b extends laterally through the outer periphery of the partition 16, so that the partition 16 has a notch on one side near the inner wall of the housing 1. In this way, on the one hand, the liquid refrigerant accumulated on the upper side of the partition 16 and located in the air intake chamber 11a can directly enter the second chamber 12 through the second guide hole 161b; on the other hand, the liquid refrigerant condensed on the inner wall of the housing 1 in the area corresponding to the air intake chamber 11a can flow along the inner wall of the housing 1 through the second guide hole 161b to the second chamber 12.

[0063] To further improve the separation efficiency of the gas-liquid separator 100, in this design, the air inlet 13 is connected to an air inlet pipe 3, which is curved along the circumference of the housing 1. Thus, the gas-liquid mixed refrigerant entering the air inlet chamber 11a through the air inlet pipe 3 generates centrifugal force under the action of the pipe, and under the action of gravity, the liquid phase refrigerant and the gas phase refrigerant are separated to a certain extent.

[0064] Furthermore, one end of the intake pipe 3, connected to the intake port 13, extends into the intake chamber 11a and is tangential to the side wall of the housing 1. This allows the gas-liquid mixed refrigerant entering the intake chamber 11a from the intake pipe 3 to be directly guided to the side wall of the housing 1. Consequently, the gaseous refrigerant can be effectively reversed and deflected near the side wall of the housing 1, while the liquid refrigerant will be adsorbed and accumulated on the side wall of the housing 1, further improving the separation of the gaseous and liquid refrigerants.

[0065] Furthermore, in this embodiment, the housing 1 is cylindrical with a diameter of d, where 10mm ≤ d ≤ 50mm; and / or, the height of the housing 1 is H, where 30mm ≤ d ≤ 300mm. By limiting the diameter and height of the housing 1 as described above, the internal cavity of the housing 1 is matched with the refrigerant, thereby ensuring that the gas-liquid separator 100 remains in optimal operating condition.

[0066] Furthermore, when the distance from the air inlet 13 to the bottom wall of the housing 1 is too large, the area of ​​the air inlet 13 corresponding to the side wall of the housing 1 is reduced. When the gas-liquid mixed refrigerant flows from the air inlet 13 to the side wall of the housing 1, a good separation effect cannot be obtained. Conversely, when the distance from the air inlet 13 to the bottom wall of the housing 1 is too small, the probability of the gas-liquid mixed refrigerant in the air inlet chamber 11a entering the second chamber 12 and contacting the liquid refrigerant in the second chamber 12 increases. In this embodiment, the air inlet is located on the upper side of the partition 16, and the distance from the air inlet 13 to the bottom wall of the housing 1 is L, the height of the housing 1 is H, and 0.6≤L / H≤0.9. This ensures good separation of the gas-liquid mixed refrigerant as it flows from the air inlet 13 to the side wall of the housing 1, while reducing the likelihood of the gas-liquid mixed refrigerant in the air inlet chamber 11a entering the second chamber 12 and coming into contact with the liquid refrigerant in the second chamber 12.

[0067] Furthermore, when the distance from the partition 16 to the bottom wall of the housing 1 is too large, the space of the air inlet chamber 11a and the filter chamber 11b becomes relatively small, resulting in a higher pressure of the gas-liquid mixed refrigerant in the air inlet chamber 11a. This causes the refrigerant to pass through the filter screen 21 at a faster speed, reducing the separation efficiency of the gas-liquid mixed refrigerant. Conversely, when the distance from the partition 16 to the bottom wall of the housing 1 is too small, the gas-liquid mixed refrigerant overflowing from the first chamber 11 into the second chamber 12 can more easily come into contact with the liquid refrigerant located in the second chamber 12, thereby increasing the proportion of liquid refrigerant in the gas-liquid mixed refrigerant. In this embodiment, the distance from the partition 16 to the bottom wall of the housing 1 is 'a', the height of the housing 1 is 'H', and 0.3 ≤ a / H ≤ 0.7. In this way, the gas-liquid mixed refrigerant in the air intake chamber 11a can be at a suitable pressure, and the probability of the gas-liquid mixed refrigerant overflowing from the first chamber 11 into the second chamber 12 coming into contact with the liquid refrigerant located in the second chamber 12 can be reduced.

[0068] Furthermore, to facilitate the transport of the liquid refrigerant in the second chamber 12 to the evaporator for heat absorption and conversion into gaseous refrigerant, in this embodiment, the bottom wall of the housing 1 is provided with a drain port 15 communicating with the second chamber 12. Specifically, the drain port 15 is connected to a drain pipe, which is connected to the evaporator.

[0069] Furthermore, to achieve the above objectives, the present invention also proposes a refrigeration device, which includes the gas-liquid separator 100 described in the above technical solution. It should be noted that the detailed structure of the gas-liquid separator 100 in the refrigeration device can be referred to the embodiments of the gas-liquid separator 100 described above, and will not be repeated here. Since the gas-liquid separator 100 is used in the refrigeration device of the present invention, the embodiments of the refrigeration device of the present invention include all the technical solutions of all the embodiments of the gas-liquid separator 100 described above, and the achieved technical effects are also completely the same, and will not be repeated here.

[0070] It is understood that the separation efficiency of the gas-liquid separator 100 is related to the volume of the refrigerant. To achieve better separation efficiency, in this embodiment, the volume of the refrigerant is V1 ml, the volume of the inner cavity of the housing 1 is V ml, and 0.1V1≤V≤V1. Specifically, the volume of the refrigerant is calculated as follows: the mass of the refrigerant in the refrigeration equipment is x grams, and the saturated liquid density of the refrigerant at a preset temperature is y grams / ml, V1=x / y. In this embodiment, the preset temperature is 20℃.

[0071] In one embodiment, please refer to Figure 6 and Figure 7 The refrigeration equipment further includes a compressor 200, which includes a housing 210, a cylinder 220, and a piston assembly. The cylinder 220 is disposed within the housing 210, and its working chamber 220a has a first suction port 220b at its bottom and a second suction port 220c on its side wall. The second suction port 220c is connected to a suction pipe 230. The piston assembly includes a piston 240 movably disposed within the working chamber 220a. The first suction port 220b communicates with the inner cavity of the housing 210, and the suction pipe 230 communicates with the exhaust port 14. In this solution, by connecting the gas-liquid separator 100 to the suction pipe 230, the liquid refrigerant content in the working chamber 220a transported by the second suction flow channel is reduced, thereby mitigating the adverse effects of liquid slugging.

[0072] It should be noted that the dual-suction compressor 200 includes a first suction channel with a lower airflow pressure and a second suction channel with a higher airflow pressure. If there is liquid refrigerant in the gaseous refrigerant transported to the working chamber 220a through the second suction channel, liquid slugging will occur, which will have an adverse effect on the cylinder 220.

[0073] Furthermore, in this invention, the working chamber 220a is simultaneously connected to the first suction port 220b and the second suction port 220c, so that air can be supplied to the working chamber 220a simultaneously through the first suction flow channel corresponding to the first suction port 220b and the second suction flow channel corresponding to the second suction port 220c, thereby increasing the suction volume of the working chamber 220a, thereby improving the compression efficiency of the compressor 200 and reducing power consumption.

[0074] Understandably, in a conventional compressor 200, a control valve assembly is often needed to control the opening and closing of each suction port. When the compressor 200 has only one suction port, one control valve assembly is used; when the compressor 200 has multiple suction ports, multiple control valve assemblies are generally used, which makes the control process cumbersome. Therefore, in one embodiment of the present invention, the distance between the second suction port 220c and the first stop point is L, and the distance between the first stop point and the second stop point is S, where 0.5S < L.

[0075] Since the piston 240 acts as a control valve for opening and closing, in order to adjust the flow ratio between the first intake port 220b and the second intake port 220c, the air intake volume of the second intake port 220c can be controlled by setting the distance between the second intake port 220c and the first and second dead points. That is, due to the position setting of the second intake port 220c, the opening and closing time of the second intake port 220c can be adjusted when the piston 240 reciprocates. The closer the second intake port 220c is to the midpoint between the first and second dead points, the earlier the second intake port 220c opens, the longer the air replenishment time, and the greater the air replenishment volume. When the second intake port 220c is closer to the second dead point, the opening time of the second intake port 220c is shorter, the air replenishment time is shorter, and thus the air replenishment volume is less.

[0076] In this embodiment, by positioning the second suction port 220c close to the second dead center, the compressor 200 does not need a dedicated control valve assembly to control the opening and closing of the second suction port 220c. Instead, the second suction port 220c automatically opens and closes during the stroke of the piston 240. This ingenious design saves costs. Furthermore, by setting the distance between the second suction port 220c and the first and second dead centers, the intake volume of the second suction port 220c can be controlled. That is, due to the position setting of the second suction port 220c, the opening and closing duration of the second suction port 220c can be adjusted during the reciprocating motion of the piston 240, thereby adjusting the flow ratio between the first suction port 220b and the second suction port 220c.

[0077] Specifically, the first intake port 220b is equipped with a control valve assembly for opening and closing. During the movement of the piston 240, the opening and closing states of the first intake port 220b and the second intake port 220c are as follows:

[0078] The suction stroke of the compressor 200 includes:

[0079] First stroke: The piston 240 moves from the first dead center to the second dead center, and the distance from the first dead center is less than 0.5 seconds. During the first stroke, the control valve assembly opens, making the first intake port 220b open, and the second intake port 220c is blocked by the piston 240. At this time, the working chamber 220a only draws air through the first intake port 220b. It can be understood that as the piston 240 moves closer to the second dead center, the compression space of the working chamber 220a increases, and it is in a negative pressure state, which facilitates the entry of external airflow into the working chamber 220a through the first intake port 220b. However, since the airflow pressure through the first intake port 220b is less than the airflow pressure through the second intake port 220c, during this stroke, the piston 240 blocks the second intake port 220c to prevent the airflow from the second intake port 220c from obstructing the airflow from the first intake port 220b into the working chamber 220a.

[0080] Second stroke: The piston 240 moves from the first dead center to the second dead center, and the distance from the first dead center is greater than 0.5S.

[0081] During the second stroke, the control valve assembly can be in an open or closed state. When the airflow pressure in the second intake channel is slightly greater than that in the first intake channel, and the control valve assembly remains open, the piston 240 does not block the second intake port 220c, allowing the second intake port 220c to connect to the working chamber 220a. At this time, both the first intake port 220b and the second intake port 220c simultaneously input airflow into the working chamber 220a. Since a certain amount of airflow was drawn into the space of the working chamber 220a through the first intake port 220b during the first stroke, resulting in a certain airflow pressure in the compression space, the impact on the airflow through the first intake port 220b is minimal when airflow is input into the working chamber 220a through the second intake port 220c. Furthermore, since the distance from the second intake port 220c to the first stop point is greater than 0.5S, that is, the distance to the first intake port 220b is greater than 0.5S, there is a suitable buffer distance between the two, which reduces the obstruction effect of the airflow from the second intake port 220c on the airflow from the first intake port 220b and improves the compression efficiency.

[0082] When the airflow pressure in the second intake channel is greater than that in the first intake channel, and the control valve assembly is in the closed state, the second intake port 220c inputs airflow into the working chamber 220a of the cylinder 220. At this time, the refrigerant supplied to the working chamber 220a comes from the second intake port 220c. It can be understood that the closer the second intake port 220c is to the midpoint between the first and second dead ends, the earlier it opens and the later it closes, resulting in a longer supply time of high-pressure refrigerant and a larger supply volume. Conversely, the closer the second intake port 220c is to the second dead end, the later it opens and the earlier it closes, resulting in a shorter supply time of high-pressure refrigerant and a smaller supply volume. In practice, the position of the second intake port 220c can be set according to the required supply volume.

[0083] The compression stroke of the compressor 200 includes:

[0084] Third stroke: The piston 240 moves from the second dead center towards the first dead center, and the distance from the first dead center is greater than 0.5 seconds. During the third stroke, the control valve assembly is closed, and the piston 240 moves rapidly towards the first dead center. Because the working chamber 220a contains airflow from both the first intake port 220b and the second intake port 220c, the airflow pressure in the working chamber 220a is lower than the airflow pressure through the second intake port 220c. Therefore, during the third stroke, when the airflow in the working chamber 220a is compressed, it does not excessively obstruct the airflow input into the working chamber 220a through the second intake port 220c, allowing the compressor 200 to still draw in airflow during the compression stroke.

[0085] Fourth stroke: The piston 240 moves from the second dead center towards the first dead center, and the distance from the first dead center is less than 0.5 seconds. During the fourth stroke, the control valve assembly remains closed, and the piston 240 blocks the second intake port 220c. During this process, the piston 240 compresses the airflow in the working chamber 220a into a high-pressure airflow. When the piston 240 moves to the second dead center, the airflow pressure in the working chamber 220a is fully compressed. At this time, the control valve assembly connecting the output pipe of the working chamber 220a switches from the closed state to the open state to output the compressed high-pressure airflow.

[0086] It should be noted that, in this embodiment, the airflow path in the first intake airflow channel is: the inner cavity of the outer shell 210 → the first intake hole 220b → the working chamber 220a.

[0087] The airflow path in the second suction airflow channel is as follows: gas-liquid separator 100 → suction pipe 230 → second suction hole 220c → working chamber 220a.

[0088] Furthermore, it should be noted that the specific form of the refrigeration equipment is not limited; it can be an air conditioner, a fresh air system, or other equipment. Specifically, in this embodiment, the refrigeration equipment is a refrigerator.

[0089] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A gas-liquid separator, characterized in that, include: The housing has a partition inside, which divides the inner cavity of the housing into a first chamber and a second chamber arranged vertically. The first chamber and the second chamber are connected to each other at the partition. The housing has an air inlet and an air outlet. A filter assembly is disposed in the first chamber. The filter assembly includes a filter screen, which horizontally divides the first chamber into an air inlet chamber and a filter chamber. The air inlet is connected to the air inlet chamber, and the exhaust port is connected to the filter chamber. The partition has flow guide holes at the top and bottom, and the flow guide holes connect the first chamber and the second chamber; The flow guide hole includes a first flow guide hole located in the region of the partition corresponding to the filter cavity, and the first flow guide hole connects the filter cavity and the second chamber; The filter screen is arranged in a ring shape to define the filter cavity inside it and to define the air intake cavity between it and the housing; The filter screen is wound around the outside of the first guide hole so that the air intake chamber and the filter chamber are connected through the mesh on the filter screen; The lower end of the filter screen abuts against the upper end of the partition plate, so that there is no direct communication gap between the air intake chamber and the filter chamber at the connection position between the filter screen and the partition plate. The guide hole includes a second guide hole located at the periphery of the partition and corresponding to the area of ​​the air intake chamber, the second guide hole connecting the air intake chamber and the second chamber; The second flow guide hole extends laterally through the outer periphery of the partition, so that a notch is formed on the partition near the inner wall of the housing. The liquid refrigerant that accumulates on the upper side of the partition and is located in the air inlet can enter the second chamber through the second guide hole; the liquid refrigerant that accumulates on the inner wall of the housing corresponding to the air inlet region flows along the inner wall of the housing through the second guide hole to the second chamber; The air inlet is located on the upper side of the partition, and the distance from the air inlet to the bottom wall of the housing is L, the height of the housing is H, and 0.6≤L / H≤0.9; The distance from the partition to the bottom wall of the shell is a, and the height of the shell is H, where 0.3 ≤ a / H ≤ 0.

7.

2. The gas-liquid separator as described in claim 1, characterized in that, The filter assembly also includes a ring-shaped support portion, the lower end of which is connected to the upper side of the partition. The filter is installed on the support portion and adapted to the support portion to form the filter cavity.

3. The gas-liquid separator as described in claim 2, characterized in that, The support includes multiple support frames arranged in a ring at intervals, and the lower end of each support frame is connected to the upper side of the partition. The filter screen is sleeved on the outer periphery of the multiple support frames to form the filter cavity.

4. The gas-liquid separator as described in claim 3, characterized in that, The upper end of each of the support frames is spaced apart from the upper end of the housing; The support part further includes a support plate and a connecting pipe. The support plate is located at the upper end of the plurality of support frames and has a connecting hole that connects to the filter chamber. The connecting pipe connects the connecting hole and the exhaust port.

5. The gas-liquid separator as described in claim 1, characterized in that, The second guide hole is provided in multiple ways, and the multiple second guide holes are arranged at intervals along the circumference of the partition.

6. The gas-liquid separator as described in claim 1, characterized in that, The air inlet is connected to an air inlet pipe, which is curved along the circumference of the housing.

7. The gas-liquid separator as described in claim 6, characterized in that, One end of the air intake pipe, which is connected to the air intake port, extends into the air intake chamber and is tangent to the side wall of the housing.

8. The gas-liquid separator as described in claim 1, characterized in that, The shell is cylindrical in shape, and its diameter is d, 10mm ≤ d ≤ 50mm; and / or, The height of the shell is H, where 30mm ≤ H ≤ 300mm.

9. The gas-liquid separator as described in claim 1, characterized in that, The bottom wall of the shell is provided with a drain port that connects to the second chamber.

10. A refrigeration device, characterized in that, Includes the gas-liquid separator as described in any one of claims 1 to 9.

11. The refrigeration equipment as described in claim 10, characterized in that, The volume of the refrigerant in the refrigeration equipment is V1 ml, and the volume of the inner cavity of the shell is V ml, where 0.1V1≤V≤V1.

12. The refrigeration equipment as described in claim 11, characterized in that, The refrigeration equipment further includes a compressor, the compressor comprising: shell; A cylinder body, disposed within the outer casing, has a first air intake hole at the bottom of its working chamber and a second air intake hole on its side wall, the second air intake hole being connected to an air intake pipe; and, Piston assembly, including a piston movably disposed within the working chamber; The first air intake hole is connected to the inner cavity of the outer shell, and the air intake pipe is connected to the exhaust port.

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