Filter assembly and air conditioner accumulator

Abstract

The application relates to a filter assembly and an air conditioner liquid accumulator, which comprises a filter installed in the inside of a cylinder body; an air inlet pipe and an air outlet pipe are fixedly installed at the top end of the cylinder body, the bottom end of the air inlet pipe extends into the lower part of the filter, and the bottom end of the air outlet pipe is located above the filter; a separation mechanism is arranged in the inside of the cylinder body, the separation mechanism comprises a conical seat, the conical seat is located below the air inlet pipe, the tip end of the conical seat faces upwards and abuts against the bottom end of the air inlet pipe, and a leaf strip is fixedly installed at the top of the conical seat; a sliding plate is slidably arranged at the bottom end in the inside of the cylinder body, and a lower cavity part is formed between the sliding plate and the bottom of the cylinder body. The filter assembly and the air conditioner liquid accumulator are designed in linkage of the conical seat, the leaf strip and the elastic return structure, airflow buffering and cyclone centrifugal pre-separation are realized, noise, vortex and vibration problems generated by airflow directly impacting the inner wall are eliminated, airflow flow direction is regularized, gaseous refrigerant is ensured to flow smoothly, liquid droplet disorderly tumbling is avoided to interfere with the separation process, and the basic efficiency of gas-liquid separation is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning liquid receiver technology, and particularly to a filter assembly and an air conditioning liquid receiver. Background Technology

[0002] The receiver is an important component of the compressor, serving to store, separate gas and liquid, filter, silence, and buffer the refrigerant. It is installed on the air conditioner evaporator and compressor suction pipe and is a protective component to prevent liquid refrigerant from flowing into the compressor and causing liquid slugging.

[0003] In the prior art, when the refrigerant evaporates and enters the liquid receiver, it will directly impact the inner wall of the liquid receiver or its internal filter, which can easily generate large airflow noise, eddy current disturbance and fluid impact vibration, resulting in poor gas-liquid separation effect and reducing the working efficiency and stability of the liquid receiver.

[0004] In view of the above-mentioned shortcomings, the present invention aims to create a filter component and an air conditioning liquid receiver that have greater industrial application value. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the purpose of this invention is to provide a filter assembly, including a filter element installed inside a cylindrical body;

[0006] An air inlet pipe and an air outlet pipe are fixedly installed at the top of the cylinder. The bottom end of the air inlet pipe extends below the filter element, and the bottom end of the air outlet pipe is located above the filter element.

[0007] The cylinder is equipped with a separation mechanism, which includes a cone seat located below the air inlet pipe. The tip of the cone seat faces upward and abuts against the bottom of the air inlet pipe. A blade is fixedly installed on the top of the cone seat.

[0008] A sliding plate is slidably provided at the bottom of the cylinder, forming a lower cavity between the sliding plate and the bottom of the cylinder, and is unidirectionally connected from the upper half of the cylinder to the lower cavity. A vertical rod is fixed at the top of the sliding plate, and a cone seat is rotatably provided at the top of the vertical rod. A first spring for the cone seat to return to its original position is fitted on the outside of the vertical rod.

[0009] After the refrigerant evaporates, it enters the cylinder through the inlet pipe. The refrigerant airflow impacts the cone seat and blades downwards. The blades and cone seat rotate to separate the liquid in the refrigerant. At the same time, the slide plate moves down to compress the lower cavity.

[0010] When the refrigerant stops entering the inner cavity of the cylinder, the slide plate moves upward to draw the separated liquid inside the cylinder into the lower cavity for temporary storage.

[0011] Preferably, multiple blades are provided, and the multiple blades are evenly distributed around the axis of the cone seat. The blades are inclined relative to the axis of the cone seat, and the inclination angle of the blades is 30° to 45°.

[0012] Preferably, a partition is fixedly connected inside the cylinder, the partition being located between the filter element and the slide plate, and the partition dividing the inside of the cylinder into a separation chamber and a collection chamber;

[0013] The filter element is located in the separation chamber, and the slide plate is located in the collection chamber.

[0014] An upper cavity is formed between the top of the slide plate and the bottom of the partition, and the vertical rod moves through the partition.

[0015] Preferably, a collection component is provided below the filter element. The collection component includes a flow guide box, which is fixedly installed on the inner wall of the cylinder. The bottom end of the flow guide box has a collection annular cavity.

[0016] Preferably, the bottom of the flow guide box is fixed with a connecting pipe, the connecting pipe is vertically distributed, the connecting pipe is movably passed through the partition, one end of the connecting pipe movably passes through the partition and is fixedly connected to the slide plate, the collecting ring cavity is connected to the lower cavity through the connecting pipe, the top end of the connecting pipe is set as a telescopic hose, and the bottom end of the connecting pipe is fixedly installed with a first one-way valve.

[0017] The bottom end of the cylinder is provided with a bottom hole, and a second one-way valve is fixedly installed inside the bottom hole. The liquid collected in the lower cavity flows one-way to the outside of the cylinder through the second one-way valve in the bottom hole.

[0018] Preferably, the filter element is made of a hydrophilic porous absorbent sponge or a polymer absorbent fiber.

[0019] Preferably, the side wall of the cylinder is provided with air holes, which are connected to the upper cavity. When the slide plate slides downward in the collection chamber, external gas enters the upper cavity through the air holes.

[0020] Preferably, a conical sleeve is fixedly installed inside the air intake pipe, and the inner diameter of the bottom end of the conical sleeve is small.

[0021] Preferably, an airbag is fixedly connected to the outside of the air intake pipe;

[0022] The airbag and cone sleeve are respectively set at the inner ring of the filter element;

[0023] The airbag is equipped with a second spring for assisting in the airbag's reset. The second spring is horizontally distributed, and a through hole is provided on the side wall of the air inlet pipe. The inner cavity of the air inlet pipe is connected to the inside of the airbag through the through hole. When the refrigerant passes through the cone sleeve at high speed due to the sudden contraction of the flow cross section, a negative pressure is generated at the through hole, causing the airbag and the second spring to contract.

[0024] The present invention also discloses an air conditioning liquid receiver that uses the above-described filter assembly.

[0025] By means of the above-described solution, the present invention has at least the following advantages:

[0026] 1. This invention achieves airflow buffering and swirling centrifugal pre-separation through the linkage design of the cone seat, blades and elastic reset structure, eliminating noise, eddies and vibration caused by the airflow hitting the inner wall, regulating the airflow direction, ensuring the smooth and stable flow of gaseous refrigerant, avoiding disorderly rolling of liquid droplets that interferes with the separation process, and improving the basic efficiency of gas-liquid separation.

[0027] 2. Adopting a dual separation mode of pre-separation and secondary adsorption interception, the liquid adsorption load of the filter element is reduced, alleviating the problems of rapid saturation, deformation and damage of the filter element, extending the service life of the filter element, ensuring the continuity and stability of gas-liquid separation, preventing liquid refrigerant from entering the compressor and causing liquid slugging damage, and protecting core components.

[0028] 3. With the help of the one-way conduction structure and negative pressure suction and drainage design in the lower cavity, the liquid refrigerant after separation is temporarily stored in a directional manner, suctioned under negative pressure and circulated outward. This avoids the liquid from accumulating and deteriorating in the cylinder for a long time. At the same time, it ensures that the upper part of the cylinder does not come into direct contact with the outside during the drainage process, thus isolating the refrigerant from external impurities. The whole machine can achieve self-cleaning drainage and sealing protection without manual maintenance, ensuring the long-term stable, efficient and safe operation of the refrigeration system.

[0029] 4. In response to the technical problem of residual liquid accumulation in existing filter elements, this invention features a system that allows for liquid drainage by squeezing when the machine is stopped and for filtration by spreading when the machine is turned on, achieving a periodic "breathing" motion. This removes residual liquid from the filter elements without interfering with normal gas-liquid separation operations, thus balancing separation efficiency and protective effects.

[0030] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the filter component of the present invention, embodiment 1.

[0033] Figure 2 This is a cross-sectional view of the filter component of the present invention.

[0034] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0035] Figure 4 This is a schematic diagram of the air inlet and air outlet pipes of the present invention.

[0036] Figure 5 This is a schematic diagram of the cylinder and partition structure of the present invention.

[0037] Figure 6 This is a schematic diagram of the cone seat and blade structure of the present invention.

[0038] Figure 7 This is a schematic diagram of the flow guide box and the gathering ring cavity structure of the present invention.

[0039] Figure 8 This is a schematic diagram of the structure of embodiment 2 of the filter component of the present invention.

[0040] Figure 9 This is a schematic diagram of the structure of the filter component in Embodiment 3 of the present invention.

[0041] Figure 10 For the present invention Figure 9 Enlarged schematic diagram of the structure at point B.

[0042] In the diagram: 1. Cylinder; 101. Baffle; 102. Separation chamber; 103. Collection chamber; 1031. Upper chamber; 1032. Lower chamber; 2. Inlet pipe; 3. Outlet pipe; 4. Filter element; 5. Cone seat; 6. Blade; 7. Vertical rod; 8. First spring; 9. Flow guide box; 10. Flow guide hole; 11. Gathering ring cavity; 12. Connecting pipe; 13. First one-way valve; 14. Bottom hole; 15. Second one-way valve; 16. Air hole; 17. Airbag; 18. Second spring; 19. Through hole; 20. Suction tube; 21. Slide plate; 22. Cone sleeve. Detailed Implementation

[0043] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0044] Example 1, the present invention provides as follows Figures 1 to 7 The filter assembly shown includes a cylinder 1. A filter element 4 is fixedly installed in the middle section inside the cylinder 1. The filter element 4 is made of hydrophilic porous absorbent sponge or high-molecular absorbent fiber material, which has good liquid adsorption and gas permeability performance. The filter element 4 is annular. An inlet pipe 2 and an outlet pipe 3 are fixedly installed at the top of the cylinder 1. Both the inlet pipe 2 and the outlet pipe 3 are L-shaped. The bottom end of the inlet pipe 2 extends into the bottom of the filter element 4 from the inner ring. The bottom end of the outlet pipe 3 is located above the filter element 4. The top end of the inlet pipe 2 is connected to the evaporator outlet of the refrigeration system. The top end of the outlet pipe 3 is connected to the compressor suction port of the refrigeration system.

[0045] When using the receiver, the refrigerant evaporates and enters the inner cavity of the cylinder 1 through the inlet pipe 2, located below the filter element 4. It then flows upward, and the liquid is adsorbed and trapped by the filter element 4, achieving gas-liquid separation. The gas then passes smoothly through the pores of the filter element 4 and is discharged to the compressor through the outlet pipe 3. This prevents the liquid from directly entering the compressor with the airflow, effectively avoiding liquid slugging damage to the compressor caused by incompletely vaporized refrigerant. At the same time, it ensures the smooth flow of gaseous refrigerant and maintains the stable operation of the refrigeration system.

[0046] In the prior art, when the refrigerant evaporates and enters the inner cavity of the cylinder 1 through the inlet pipe 2, it directly impacts the inner wall of the cylinder 1 or the surface of the filter element 4, which easily generates large airflow noise, eddy current disturbance, and fluid impact vibration. The presence of eddies causes the incompletely vaporized refrigerant droplets to roll disorderly inside the cylinder 1, making it difficult to separate effectively and reducing the gas-liquid separation effect. Moreover, relying solely on the filter element 4 for single adsorption and retention can easily lead to problems such as excessively rapid adsorption saturation and deformation and damage, making it difficult to achieve gas-liquid separation continuously and stably. Therefore, the present invention provides a separation mechanism inside the cylinder 1. The separation mechanism can use rotation to guide and centrifuge the refrigerant entering the inner cavity of the cylinder 1 through the inlet pipe 2, reducing the liquid load entering the filter element 4.

[0047] Reference Figure 2 , Figure 3 , Figure 6 As shown, the separation mechanism includes a cone seat 5, located below the inlet pipe 2, with its tip pointing upwards and abutting against the bottom end of the inlet pipe 2. A blade 6 is fixedly mounted on the top of the cone seat 5, and the blade 6 is inclined relative to the axis of the cone seat 5 at an angle of 30° to 45°. Within this angle range, the refrigerant airflow can stably drive the blade 6 and the cone seat 5 to rotate. The blade 6 has a suitable length, so that when the cone seat 5 abuts against the bottom end of the inlet pipe 2, the blade 6 is within the coverage area of ​​the inlet pipe 2. Multiple blades 6 are provided, and the multiple blades 6 are evenly distributed around the axis of the cone seat 5. Inside the cylinder 1... A sliding plate 21 is slidably provided at the bottom end of the cylinder 1, forming a lower cavity 1032 between the sliding plate 21 and the bottom of the cylinder 1. The lower cavity 1032 is connected to the upper half of the cylinder 1 through a one-way conduction structure, so that the liquid in the upper half of the cylinder 1 can flow into the lower cavity 1032, and the liquid will not flow back from the lower cavity 1032 to the upper half of the cylinder 1. A vertical rod 7 is fixed at the top of the sliding plate 21, and a cone seat 5 is rotatably provided at the top of the vertical rod 7. A ball bearing or other structure is provided between the cone seat 5 and the vertical rod 7 to ensure smooth rotation of the cone seat 5. At the same time, a first spring 8 is fitted on the outside of the vertical rod 7 to allow the cone seat 5 to return to its original position.

[0048] The actual working conditions are as follows:

[0049] First, when the refrigerant has not entered the inner cavity of the cylinder 1, the first spring 8 is in the extended state, pushing the cone seat 5, the vertical rod 7 and the slide plate 21 to move upward as a whole until the top of the cone seat 5 is stably abutted against the bottom of the air inlet pipe 2. At this time, as the slide plate 21 moves upward, the lower cavity 1032 has a large space.

[0050] In the second step, after the refrigerant evaporates, it enters the inner cavity of the cylinder 1 through the inlet pipe 2. The high-pressure refrigerant airflow impacts the top surface of the cone seat 5 downwards, overcoming the elastic force of the first spring 8, and pushing the cone seat 5, the vertical rod 7 and the sliding plate 21 to move downwards simultaneously. The cone seat 5 disengages from the bottom end of the inlet pipe 2, and the refrigerant airflow can flow smoothly into the interior of the cylinder 1. During the downward movement of the sliding plate 21, the space of the lower cavity 1032 is compressed, and the first spring 8 is compressed, buffering the instantaneous impact force of the airflow, reducing the airflow noise generated by the hard impact, and preventing the airflow from hitting the inner wall directly and causing violent eddies.

[0051] In the third step, the refrigerant airflow continuously flows in and impacts multiple inclined blades 6. Under the thrust of the airflow, the blades 6 drive the cone seat 5 to rotate. The rotating blades 6 drive the refrigerant airflow to form a stable vortex, which disperses the disordered vortex, suppresses airflow turbulence, and reduces operating noise. At the same time, the centrifugal force is used to throw the liquid in it toward the inner wall of the cylinder 1 to achieve gas-liquid pre-separation.

[0052] In the fourth step, the pre-separated gas passes upward through the filter element 4, where the filter element 4 performs secondary adsorption and retention of residual trace droplets. The gas is finally discharged to the compressor through the outlet pipe 3. The entire process achieves the dual effects of noise reduction and vortex suppression, as well as efficient gas-liquid separation, preventing liquid from entering the compressor and causing liquid hammer damage.

[0053] In the fifth step, when the refrigerant stops entering the inner cavity of the cylinder 1, the restoring force of the first spring 8 pushes the cone seat 5, the vertical rod 7, and the slide plate 21 to move upward as a whole. The volume of the lower cavity 1032 expands, creating a negative pressure suction effect, which draws the separated liquid in the cylinder 1 into the lower cavity 1032 for temporary storage. When the next round of refrigerant is introduced and the slide plate 21 moves down to squeeze the lower cavity 1032, the temporarily stored liquid can be discharged outward along the preset drain channel, avoiding long-term accumulation of liquid in the cylinder 1. During this operation, the upper part of the cylinder 1 will not directly contact the outside, preventing external impurities from entering and affecting the filter element 4, etc.

[0054] In summary, the coordinated design of the cone seat 5, blade 6, and elastic reset structure achieves airflow buffering and swirling centrifugal pre-separation, eliminating noise, eddies, and vibration caused by the airflow directly impacting the inner wall, regulating the airflow direction, ensuring smooth and stable flow of gaseous refrigerant, avoiding disorderly rolling of liquid droplets that interferes with the separation process, and improving the basic efficiency of gas-liquid separation.

[0055] Furthermore, a dual separation mode of pre-separation and secondary adsorption interception is adopted to reduce the liquid adsorption load of filter element 4, alleviate the problem of filter element 4 becoming too saturated and deformed, extend the service life of filter element 4, ensure the continuity and stability of gas-liquid separation, prevent liquid refrigerant from entering the compressor and causing liquid slugging damage, and protect core components.

[0056] Furthermore, by utilizing the unidirectional conduction structure and negative pressure suction and drainage design of the lower cavity 1032, the directional temporary storage, negative pressure suction, and circulation drainage of the separated liquid refrigerant are achieved, preventing the liquid from accumulating and deteriorating in the cylinder 1 for a long time. At the same time, it ensures that the upper part of the cylinder 1 does not come into direct contact with the outside during the drainage process, isolating the refrigerant from external impurities. The entire unit can achieve self-cleaning drainage and sealing protection without manual maintenance, ensuring the long-term stable, efficient, and safe operation of the refrigeration system.

[0057] It should be noted that this structure is suitable for conventional air conditioning refrigeration system operating conditions. The refrigerant flow pressure on the compressor suction side is usually 0.15MPa to 0.35MPa. This pressure range is sufficient to drive the inclined blades 6 to rotate the cone seat 5 smoothly, thereby achieving swirling separation.

[0058] Reference Figure 2 , Figure 3 , Figure 5 As shown, a partition 101 is fixedly connected inside the cylinder 1. The partition 101 is located between the filter element 4 and the slide plate 21. The partition 101 divides the inside of the cylinder 1 into a separation chamber 102 and a collection chamber 103. The filter element 4 is located in the separation chamber 102, and the slide plate 21 is located in the collection chamber 103. An upper cavity 1031 is formed between the top of the slide plate 21 and the bottom of the partition 101. An air hole 16 is provided on the side wall of the cylinder 1. The air hole 16 communicates with the upper cavity 1031. When the slide plate 21 slides downward in the collection chamber 103, external gas enters the upper cavity 1031 through the air hole 16. When the slide plate 21 slides upward in the collection chamber 103, the gas inside the upper cavity 1031 is discharged through the air hole 16, thereby ensuring that the slide plate 21 moves stably up and down. A filter screen (not shown in the figure) is provided inside the air hole 16 to prevent external impurities from entering the upper cavity 1031.

[0059] A sliding hole is provided on the partition plate 101, and the sliding hole is concentrically distributed with the cylinder 1. The vertical rod 7 is slidably disposed in the sliding hole. A wear-resistant bushing (not shown in the figure) is embedded in the inner wall of the sliding hole. The wear-resistant bushing is made of self-lubricating graphite copper sleeve or polytetrafluoroethylene wear-resistant material, which can reduce the frictional resistance when the vertical rod 7 slides, reduce the direct wear between the vertical rod 7 and the partition plate 101, extend the service life of the components, and ensure that the vertical rod 7 slides coaxially and stably for a long time. The top end of the first spring 8 is fixedly connected to the vertical rod 7, and the bottom end of the first spring 8 is fixedly connected to the partition plate 101.

[0060] Reference Figure 1 , Figure 5 As shown, the cylinder 1 adopts a three-section detachable structure, which is divided into an upper section, a middle section, and a lower section from top to bottom along the axial direction. The upper section is from the top of the cylinder 1 to the installation area of ​​the filter element 4, the middle section is from below the filter element 4 to the lower cavity 1032 area, and the lower section is from the lower cavity 1032 area to the bottom of the cylinder 1. Adjacent sections are fixed by threaded connection and sealed with a sealing ring. This structure facilitates the assembly of the whole machine and the maintenance of internal components. It is especially convenient for the quick disassembly and replacement of vulnerable parts such as the filter element 4 and the separation mechanism, reducing the later maintenance cost.

[0061] Reference Figure 3 , Figure 4 As shown, in order to achieve efficient recovery of the liquid after centrifugal separation, a collection assembly is provided below the filter element 4. The collection assembly includes a flow guide box 9, which is annular in shape with a large outer ring wall height and a small inner ring wall height. The flow guide box 9 is fixedly installed on the inner wall of the cylinder 1. The outer ring wall of the flow guide box 9 is inclined, with its bottom end inclined towards the side wall of the cylinder 1. The flow guide box 9 is distributed correspondingly to the bottom end of the air inlet pipe 2 and the cone seat 5 to receive the liquid ejected by centrifugation. The bottom end of the flow guide box 9 has a gathering annular cavity 11, and the bottom of the gathering annular cavity 11 is provided with a flow guide hole 10, which penetrates the lower surface of the flow guide box 9.

[0062] A circular hole is provided on the partition plate 101, and a connecting pipe 12 is slidably arranged inside the circular hole. The connecting pipe 12 is vertically distributed, with its top end fixedly connected to the bottom of the flow guide box 9 and its bottom end fixedly connected to the slide plate 21. The connecting pipe 12 corresponds to the flow guide hole 10. The collecting ring cavity 11 is connected to the lower cavity 1032 through the connecting pipe 12 and the flow guide hole 10. A first one-way valve 13 is fixedly installed at the bottom end of the connecting pipe 12. The first one-way valve 13 allows the liquid in the collecting ring cavity 11 to flow into the lower cavity 1032 in one direction through the connecting pipe 12 without flowing in the opposite direction. The connecting pipe 12 and the first one-way valve 13 cooperate to form a one-way conduction structure. The top end of the connecting pipe 12 is set as a telescopic flexible hose, and the rest is a rigid pipe, which does not affect the up and down movement of the slide plate 21.

[0063] Meanwhile, a bottom hole 14 is provided at the bottom end of the cylinder 1. A second one-way valve 15 is fixedly installed inside the bottom hole 14. The second one-way valve 15 allows the liquid in the lower cavity 1032 to flow outward in one direction through the bottom hole 14 without flowing in the opposite direction. The bottom hole 14 is connected to an external refrigerant recovery tank through a dedicated refrigerant recovery pipeline to collect the separated liquid in a centralized manner, thereby realizing the recycling and reuse of refrigerant resources.

[0064] Specifically, when the refrigerant evaporates and enters the inner cavity of the cylinder 1 through the inlet pipe 2, the high-pressure airflow pushes the cone seat 5, the vertical rod 7 and the slide plate 21 downwards simultaneously; during the rotation of the cone seat 5, centrifugal force is used to throw the liquid onto the inclined surface of the outer ring wall of the guide box 9, and the liquid droplets slide down along the inclined surface and flow into the collecting ring cavity 11.

[0065] When the refrigerant stops entering the inner cavity of the cylinder 1, the restoring force of the first spring 8 pushes the cone seat 5, the vertical rod 7 and the slide plate 21 to move upward as a whole. The volume of the lower cavity 1032 expands to form a negative pressure suction effect. The liquid in the collecting ring cavity 11 is drawn into the lower cavity 1032 for temporary storage through the connecting pipe 12, thus realizing the emptying of the accumulated liquid.

[0066] When the next round of refrigerant is introduced and the slide plate 21 moves down to squeeze the lower cavity 1032, the liquid is discharged outward along the bottom hole 14 to avoid the liquid from accumulating and deteriorating in the cylinder 1 for a long time.

[0067] In summary, the entire process of liquid collection, extraction, and discharge is synchronized with the separation mechanism, improving the integrity of gas-liquid separation and recovery efficiency.

[0068] Example 2, the present invention provides as follows Figure 8 The filter assembly shown has a cone sleeve 22 fixedly installed inside the inlet pipe 2. The cone sleeve 22 is distributed correspondingly to the filter element 4. The inner diameter of the bottom end of the cone sleeve 22 is small. In actual use, when the refrigerant evaporates and enters the inner cavity of the cylinder 1 through the inlet pipe 2, it is accelerated at the cone sleeve 22 due to the sudden narrowing of the flow cross section. The high-pressure and high-speed refrigerant airflow accurately impacts the blades 6, greatly increasing the airflow driving force. The refrigerant airflow drives the cone seat 5 to rotate at high speed through the blades 6, which enhances the swirling centrifugal separation effect, further improves the gas-liquid separation efficiency, and accelerates the droplet ejection speed, reducing residual droplet residue. It is suitable for refrigerant conditions with large flow rate and high liquid content, and broadens the application range of the filter assembly.

[0069] Example 3, the present invention provides as follows Figures 9-10 The filter assembly shown considers that liquid may remain on the filter element 4 after a single-round gas-liquid separation. To reduce the amount of liquid remaining and ensure continuous separation, an airbag 17 is fixedly connected to the outside of the air inlet pipe 2. The airbag 17 surrounds the outside of the air inlet pipe 2 and is distributed correspondingly to the cone sleeve 22. A second spring 18 is installed inside the airbag 17. The second spring 18 is horizontally distributed. One end of the second spring 18 is fixedly connected to the outer wall of the air inlet pipe 2, and the other end is fixedly connected to the inner wall of the airbag 17. A rigid support plate is added to the connection between the airbag 17 and the second spring 18 to reinforce it, ensuring that the supporting force of the second spring 18 is evenly transmitted, avoiding local stress damage to the airbag 17, and maintaining the stability of elastic deformation. Multiple second springs 18 are provided and evenly distributed around the air inlet pipe 2 to ensure that the airbag 17 is subjected to balanced force in the circumference.

[0070] Reference Figure 9 As shown, when the filter element 4 is assembled or replaced, the filter element 4 surrounds the outside of the airbag 17. Under the initial elastic support force of the second spring 18, the airbag 17 moderately squeezes the filter element 4, causing the inner ring of the filter element 4 to deform slightly outward and be in a pre-tightened and squeezed state. A through hole 19 is provided on the side wall of the air intake pipe 2. The inner cavity of the air intake pipe 2 is connected to the inside of the airbag 17 through the through hole 19, and the through hole 19 is correspondingly distributed with the cone sleeve 22.

[0071] In actual use, after the refrigerant evaporates, it enters the inner cavity of the cylinder 1 through the inlet pipe 2. At the cone sleeve 22, due to the sudden contraction of the flow cross section, it passes through at high speed. Affected by the Venturi negative pressure effect, an instantaneous negative pressure is generated at the through hole 19, which draws in the gas inside the air bag 17. The air bag 17 contracts, and the second spring 18 is compressed synchronously, so that the filter element 4 rebounds and stretches to a flat and fitted state, ensuring full coverage of the filtration area and uniform airflow, without affecting the normal gas-liquid separation and airflow efficiency.

[0072] When the refrigerant stops entering the inner cavity of the cylinder 1, the high-speed airflow at the cone sleeve 22 disappears, and the negative pressure at the through hole 19 disappears immediately. The second spring 18 extends and resets, releasing elastic potential energy, which pushes the air bag 17 to expand rapidly. The air bag 17 synchronously squeezes the filter element 4 in the circumference, and uses the squeezing force to completely squeeze out the residual liquid in the pores and on the surface of the filter element 4.

[0073] In summary, the adaptive linkage design of Venturi negative pressure and elastic reset is adopted, which relies on the refrigerant airflow to realize the expansion and contraction of the airbag 17 and the liquid squeezing action of the filter element 4. Moreover, the action is synchronized with the start and stop of the refrigeration system, and the operation is highly coordinated.

[0074] To address the technical problem of residual liquid accumulation in existing filter elements 4, this invention utilizes a system that involves stopping the machine to squeeze out the liquid and starting the machine to allow for filtration, achieving a periodic "breathing" motion. This removes residual liquid from filter elements 4 without interfering with normal gas-liquid separation operations, thus balancing separation efficiency and protective effects.

[0075] In addition, the circumferential elastic force of the airbag 17 and the second spring 18 can form a centering and stabilizing effect on the filter element 4, ensuring the stability of use.

[0076] This embodiment is applicable to variable frequency air conditioners, low temperature refrigeration units, and commercial refrigeration equipment with high refrigerant liquid content and frequent start-stop operations, and can ensure the long-term permeability and separation stability of filter element 4.

[0077] Reference Figure 9As shown, in addition, considering that when residual liquid is squeezed out of the filter element 4, the liquid will drip to the bottom of the separation chamber 102, i.e. the partition 101, in order to collect and process the liquid there, the top end of the connecting pipe 12 is connected to a suction tube 20. The connection between the suction tube 20 and the connecting pipe 12 is located above the first one-way valve 13. The end of the suction tube 20 away from the connecting pipe 12 abuts against the partition 101, and a counterweight (not shown in the figure) is provided at this end to ensure that it always abuts against the partition 101.

[0078] The expansion of the lower chamber 1032 creates a negative pressure suction effect. The liquid in the collecting ring chamber 11 is drawn into the lower chamber 1032 for temporary storage through the connecting pipe 12. At the same time, the liquid at the bottom of the separation chamber 102 is drawn through the suction pipe 20 to achieve full-area liquid recovery.

[0079] The present invention also discloses an air conditioning liquid receiver, which uses the above-mentioned filter components to achieve efficient gas-liquid separation, noise reduction and vibration reduction, prevention of compressor liquid slugging, self-cleaning liquid drainage and long-term stable operation.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A filter assembly, characterized in that: Includes filter element (4) installed inside the cylinder (1); The top of the cylinder (1) is fixedly equipped with an air inlet pipe (2) and an air outlet pipe (3). The bottom end of the air inlet pipe (2) extends into the bottom of the filter element (4), and the bottom end of the air outlet pipe (3) is located above the filter element (4). The cylinder (1) is provided with a separation mechanism inside. The separation mechanism includes a cone seat (5). The cone seat (5) is located below the air inlet pipe (2). The tip of the cone seat (5) faces upward and abuts against the bottom end of the air inlet pipe (2). A blade (6) is fixedly installed on the top of the cone seat (5). A sliding plate (21) is slidably provided at the bottom of the cylinder (1). A lower cavity (1032) is formed between the sliding plate (21) and the bottom of the cylinder (1). The upper half of the cylinder (1) is connected to the lower cavity (1032) in one direction. A vertical rod (7) is fixed at the top of the sliding plate (21). A cone seat (5) is rotatably provided at the top of the vertical rod (7). A first spring (8) for the cone seat (5) to reset is fitted on the outside of the vertical rod (7). After the refrigerant evaporates, it enters the interior of the cylinder (1) through the inlet pipe (2). The refrigerant airflow impacts the cone seat (5) and blades (6) downwards. The blades (6) and cone seat (5) rotate to separate the liquid in the refrigerant. At the same time, the slide plate (21) moves down to compress the lower cavity (1032). When the refrigerant stops entering the inner cavity of the cylinder (1), the slide plate (21) moves upward to draw the separated liquid inside the cylinder (1) into the lower cavity (1032) for temporary storage.

2. The filter assembly according to claim 1, characterized in that: The blades (6) are provided in multiples, and the multiple blades (6) are evenly distributed around the axis of the cone seat (5). The blades (6) are inclined relative to the axis of the cone seat (5), and the inclination angle of the blades (6) is 30° to 45°.

3. A filter assembly according to claim 1, characterized in that: A partition (101) is fixedly connected inside the cylinder (1). The partition (101) is located between the filter element (4) and the slide plate (21). The partition (101) divides the inside of the cylinder (1) into a separation chamber (102) and a collection chamber (103). The filter element (4) is located in the separation chamber (102), and the slide plate (21) is located in the collection chamber (103). An upper cavity (1031) is formed between the top of the slide plate (21) and the bottom of the partition (101), and the vertical rod (7) moves through the partition (101).

4. A filter assembly according to claim 3, characterized in that: A collection assembly is provided below the filter element (4). The collection assembly includes a flow guide box (9), which is fixedly installed on the inner wall of the cylinder (1). The bottom end of the flow guide box (9) has an agglomeration cavity (11).

5. A filter assembly according to claim 4, characterized in that: The bottom of the flow guide box (9) is fixed with a connecting pipe (12). The connecting pipe (12) is vertically distributed and is movably installed through the partition (101). One end of the connecting pipe (12) that movably passes through the partition (101) is fixedly connected to the slide plate (21). The gathering ring cavity (11) is connected to the lower cavity (1032) through the connecting pipe (12). The top end of the connecting pipe (12) is set as a telescopic hose, and the bottom end of the connecting pipe (12) is fixedly installed with a first one-way valve (13). The bottom end of the cylinder (1) is provided with a bottom hole (14), and a second one-way valve (15) is fixedly installed inside the bottom hole (14). The liquid collected in the lower cavity (1032) flows one-way to the outside of the cylinder (1) through the second one-way valve (15) in the bottom hole (14).

6. A filter assembly according to claim 1, characterized in that: The filter element (4) is made of hydrophilic porous absorbent sponge or polymer absorbent fiber.

7. A filter assembly according to claim 1, characterized in that: The cylinder (1) has an air hole (16) on its side wall. The air hole (16) is connected to the upper cavity (1031). When the slide plate (21) slides down in the collection chamber (103), the external gas enters the upper cavity (1031) through the air hole (16).

8. A filter assembly according to claim 1, characterized in that: The intake pipe (2) is fixedly provided with a cone sleeve (22), and the inner diameter of the bottom end of the cone sleeve (22) is small.

9. A filter assembly according to claim 8, characterized in that: An airbag (17) is fixedly connected to the outside of the air intake pipe (2); The airbag (17) and the cone sleeve (22) are respectively disposed on the inner ring of the filter element (4); The airbag (17) is provided with a second spring (18) for assisting the airbag (17) to reset. The second spring (18) is horizontally distributed. A through hole (19) is provided on the side wall of the air inlet pipe (2). The inner cavity of the air inlet pipe (2) is connected to the inside of the airbag (17) through the through hole (19). When the refrigerant passes through the cone sleeve (22) at high speed due to the sudden contraction of the flow section, a negative pressure is generated at the through hole (19), and the airbag (17) and the second spring (18) contract.

10. An air conditioning liquid receiver, characterized in that: Use the filtering component as described in any one of claims 1 to 9.

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