Gas wave refrigerator

Abstract

The utility model relates to refrigerating machine technical field discloses a kind of gas wave refrigerating machines, including shell, the bottom surface of the shell is fixedly connected with machine base, the end side of the shell is communicated with air inlet pipe, the end surface of the air inlet pipe is fixedly communicated with flange one, the end side of the flange one is fitted with flange two, and the filter assembly is installed between the flange one and flange two, the top surface of the shell is fixedly connected with motor, the output end of the motor is fixedly connected with rotating shaft, the outer ring of the rotating shaft is fixedly sleeved with runner distributor, the outer ring of the runner distributor is communicated with nozzle, the outer ring of the shell is communicated with multiple oscillation pipes, and the end of multiple oscillation pipes is respectively connected with cold air outlet pipe, and the bottom surface of the shell is communicated with hot gas outlet pipe.The utility model uses the grouping alternation mode of the number of nozzle less than the number of oscillation pipe, and the running process is smooth, airflow pulsation is small, and the overall vibration and noise of equipment are lower, and the operation reliability is stronger.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, specifically to an air wave refrigeration machine. Background Technology

[0002] Gas wave refrigerators are devices that utilize the energy conversion of gas shock waves and expansion waves to achieve cooling. They feature fast cooling speed, high structural strength, and adaptability to high-pressure conditions. They have wide applications in military fields such as aero-engines and missile ground high-altitude simulation test benches, providing a stable and reliable low-temperature cold source for related military equipment and ensuring continuous and stable operation of the equipment under harsh conditions.

[0003] Currently, most existing air-wave refrigerators use an equal number of nozzles and oscillating tubes, which cannot achieve alternating group operation. This results in significant airflow pulsation during operation, leading to high equipment vibration and noise levels, and poor overall operational stability. Furthermore, impurities carried by the high-pressure gas can easily enter the equipment during refrigeration, causing nozzle blockage and wear on sealing surfaces, thus shortening the overall lifespan of the equipment.

[0004] Therefore, this application proposes a gas wave refrigerator to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a gas wave refrigerator to solve the problems mentioned in the background art, where the nozzles and oscillating tubes of existing gas wave refrigerators are mostly configured in equal numbers, which makes it impossible to achieve alternating group operation. Furthermore, impurities carried by high-pressure gas during the refrigeration process can easily enter the equipment, causing nozzle blockage and wear on the sealing surface, thus affecting the normal use of the equipment.

[0006] This utility model provides the following technical solution: a wave-cooled refrigerator, including a housing, a base fixedly connected to the bottom surface of the housing, an air inlet pipe connected to one end of the housing, a flange one fixedly connected to the end face of the air inlet pipe, a flange two fitted to the end face of the flange one, a connecting pipe fixedly connected to the end face of the flange two, a filter assembly installed between the flange one and the flange two, a motor fixedly connected to the top surface of the housing, a rotating shaft fixedly connected to the output end of the motor, the rotating shaft rotatably connected to the housing, a rotary distributor fixedly sleeved on the outer ring of the rotating shaft, a nozzle connected to the outer ring of the rotary distributor, a plurality of oscillating tubes connected to the outer ring of the housing, cold air outlet pipes connected to the ends of the plurality of oscillating tubes respectively, and a hot air outlet pipe connected to the bottom surface of the housing.

[0007] Preferably, the filter assembly includes a groove formed within the flange, and a filter screen is engaged within the groove.

[0008] Preferably, a plurality of insert rods are fixedly connected in the groove, and the filter screen has corresponding insertion holes, with the insert rods being inserted into the insertion holes.

[0009] Preferably, the flange one and the flange two are fixedly connected by bolts, and a threaded hole for the bolts is provided between the flange one and the flange two.

[0010] Preferably, the number of nozzles is less than the number of oscillating tubes, and the cold air outlet pipe is bent.

[0011] Preferably, a sealing plate is fixedly connected to the top surface of the rotary distributor, and an air inlet is provided on the top surface of the sealing plate. The outer wall of the sealing plate is fitted and sealed to the inner wall of the housing, and the nozzle and the oscillating tube are alternately aligned and connected.

[0012] This utility model has the following beneficial effects:

[0013] This refrigeration unit, through its reasonable structural layout and operating mode, can achieve a stable and efficient gas wave refrigeration process, thoroughly separating hot and cold airflows, and effectively improving the depth and efficiency of refrigeration.

[0014] The chiller adopts a grouping and alternating working mode with fewer nozzles than oscillating tubes, resulting in smooth and stable operation, less airflow pulsation, lower overall equipment vibration and noise, and stronger operational reliability.

[0015] The refrigeration unit's cold air outlet pipe adopts a bent pipe design, which can effectively slow down the cold air output flow rate, dissipate residual shock waves, avoid reflected wave interference, and make the cold air output more continuous and stable.

[0016] The refrigeration unit is equipped with a filter component in the air intake pipeline, which can effectively filter out impurities in high-pressure gas, avoid nozzle clogging and sealing surface wear, extend the service life of core components, and the filter component is easy to install and remove. Daily maintenance and filter replacement are simple and quick without disassembling the whole machine, reducing the difficulty of equipment operation and maintenance and operating costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is an overall sectional view of the present invention.

[0019] Figure 3 This is an exploded view of part of the structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of flange one, flange two and filter assembly of this utility model.

[0021] In the diagram: 1. Housing; 101. Base; 2. Inlet pipe; 3. Flange 1; 4. Flange 2; 5. Connecting pipe; 6. Filter assembly; 61. Groove; 62. Insert rod; 63. Filter screen; 64. Insertion hole; 65. Bolt; 7. Motor; 8. Shaft; 9. Rotary distributor; 10. Sealing plate; 11. Inlet port; 12. Nozzle; 13. Vibrating pipe; 14. Cold air outlet pipe; 15. Hot air outlet pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: This example aims to address the problems of mismatched numbers of nozzles 12 and oscillating tubes 13, incomplete separation of hot and cold airflows, and insufficient stability of cold air output in existing airwave refrigerators. Please refer to [link / reference needed]. Figures 1-3 A wave-cooled air refrigeration machine includes a housing 1, a base 101 fixedly connected to the bottom surface of the housing 1, an air inlet pipe 2 connected to the end side of the housing 1, a motor 7 fixedly connected to the top surface of the housing 1, a rotating shaft 8 fixedly connected to the output end of the motor 7, the rotating shaft 8 being rotatably connected to the housing 1, a rotary distributor 9 fixedly sleeved on the outer ring of the rotating shaft 8, a nozzle 12 connected to the outer ring of the rotary distributor 9, a plurality of oscillating tubes 13 connected to the outer ring of the housing 1, cold air outlet pipes 14 respectively connected to the ends of the plurality of oscillating tubes 13, and a hot air outlet pipe 15 connected to the bottom surface of the housing 1.

[0024] Please see Figure 3 The number of nozzles 12 is less than the number of oscillating tubes 13. The cold air outlet pipe 14 is bent. A sealing plate 10 is fixedly connected to the top surface of the rotary distributor 9. An air inlet hole 11 is opened on the top surface of the sealing plate 10. The outer wall of the sealing plate 10 is sealed to the inner wall of the housing 1. The nozzles 12 and the oscillating tubes 13 are aligned and connected in turn.

[0025] In this embodiment: When using the refrigeration unit, first connect the air inlet pipe 2, cold air outlet pipe 14, and hot air outlet pipe 15 to the corresponding equipment respectively. All pipe connections are sealed using flanges, ensuring high connection reliability and good airtightness.

[0026] During the specific connection, the high-pressure gas source achieves a sealed connection through the connection pipe 5 and the flanges 3 and 4 of the inlet pipe 2. During the connection process, the flange 4 at the end of the connection pipe 5 is precisely aligned and fitted with the flange 3 at the end of the inlet pipe 2, and bolts 65 are inserted and tightened to achieve a sealed and fixed pipeline, preventing high-pressure gas leakage. After the connection is completed, the cold gas outlet pipe 14 is connected to the cryogenic cooling equipment of the aero-engine or missile ground high-altitude simulation test stand through a flange to provide a continuous cryogenic gas source; simultaneously, the hot gas outlet pipe 15 is connected to the exhaust gas recovery pipeline through a flange to discharge the waste heat generated by cooling, completing the connection and sealing check of the entire pipeline.

[0027] After completing the device connection, start motor 7, such as... Figure 2 As shown, motor 7 drives shaft 8 to rotate, shaft 8 drives rotary distributor 9 to rotate synchronously, and the three nozzles 12 on the outer ring of rotary distributor 9 rotate together with it. High-pressure gas enters the housing 1 through air inlet pipe 2, enters the rotary distributor 9 through air inlet hole 11 on the top surface of sealing plate 10, and is then ejected outward at high speed from the three nozzles 12 on the outer ring of the distributor.

[0028] Since there are three nozzles 12 and six oscillating tubes 13, the number of nozzles 12 is less than the number of oscillating tubes 13. During the rotation of the rotary distributor 9, the three nozzles 12 will alternately align and connect with the six oscillating tubes 13 on the outer ring of the housing 1. During operation, the six oscillating tubes 13 are divided into two groups of three. When the three nozzles 12 are aligned with the first group of three oscillating tubes 13, high-pressure gas is injected into the corresponding oscillating tube 13 at high speed, forming a shock wave compression and expansion wave expansion process inside the tube. The gas completes energy conversion inside the oscillating tube 13. The gas on the side closer to the nozzle 12 is compressed and heated by the shock wave to form high-temperature hot gas, while the gas on the side farther from the nozzle 12 is expanded and cooled by the expansion wave to form low-temperature cold gas.

[0029] When the rotary distributor 9 continues to rotate at a certain angle, and the three nozzles 12 are disconnected from the current first group of three oscillating tubes 13, the high-temperature hot air in the group of oscillating tubes 13 flows downward along the tube channel and is finally discharged from the hot air outlet pipe 15 on the bottom of the casing 1; while the low-temperature cold air is output from the cold air outlet pipe 14 at the end of the oscillating tube 13.

[0030] At the same time, the three nozzles 12 rotate synchronously to align and connect with the three oscillating tubes 13 of the second group, and the high-pressure gas is injected into the second group of oscillating tubes 13 at high speed again, repeating the above-mentioned shock wave cooling and cold-heat separation process.

[0031] This cyclical, alternating three-in-three-out operation ensures the continuity and stability of the cooling process. Furthermore, the curved design of the cold air outlet pipe 14 guides and buffers the low-temperature airflow, slowing its velocity, dissipating residual shock waves, and preventing reflected waves from flowing back into the oscillating tube 13. It also optimizes the spatial layout, reduces operating noise, and makes the cold air output more stable.

[0032] The design employs a structure with three nozzles 12 corresponding to six oscillating tubes 13, achieving alternating cooling through rotational distribution, which significantly improves cooling efficiency and operational stability. It should be noted that, in practice, the number of oscillating tubes 13 and nozzles 12 can be flexibly increased according to actual operating conditions. The quantities shown in the attached drawings and embodiments are only for illustrating the structural principle and do not limit the number of pipes and components in actual production.

[0033] Example 2: This example aims to address the problem in the prior art where high-pressure gas enters the nozzle 12 directly without filtration, causing nozzle 12 blockage and sealing surface wear. This example is an improvement upon Example 1. For details, please refer to Example 1. Figure 1 and Figure 4 The intake pipe 2 is fixedly connected to a flange 3. A flange 4 is fitted to the end of flange 3. A connecting pipe 5 is fixedly connected to the end of flange 4. A filter assembly 6 is installed between flange 3 and flange 4. The filter assembly 6 includes a groove 61 opened in flange 3. A filter screen 63 is snapped into the groove 61. Multiple insert rods 62 are fixedly connected in the groove 61. An insertion hole 64 is opened at a corresponding position on the filter screen 63. The insert rods 62 are inserted into the insertion hole 64. A bolt 65 is fixedly connected between flange 3 and flange 4. A threaded hole for the bolt 65 is provided between flange 3 and flange 4.

[0034] In this embodiment: When using the refrigeration unit, the piping is first installed according to the connection specifications of Embodiment 1. The inlet pipe 2 and connecting pipe 5, the cold air outlet pipe 14 connecting to the test bench, and the hot air outlet pipe 15 connecting to the recovery system are all connected by flanges to ensure airtightness. Before connecting the inlet pipe 2 and connecting pipe 5, the filter assembly 6 must be installed first.

[0035] During installation, such as Figure 4 As shown, the filter screen 63 is placed in the groove 61 inside flange 3, and the insertion hole 64 on the filter screen 63 is aligned with the insertion rod 62 in the groove 61 to complete the positioning and locking of the filter screen 63, ensuring that the filter screen 63 is securely installed and preventing impurities from entering the pipeline with the airflow. Then, flange 4 is fitted onto the end side of flange 3, aligning the threaded holes on flange 3 and flange 4, and bolts 65 are inserted and tightened to achieve a sealed fixation between flange 3 and flange 4, thereby reliably installing the filter assembly 6 in the pipeline.

[0036] After the pipeline connection is completed, the motor 7 is started, and the high-pressure gas source enters the refrigeration unit through the connecting pipe 5. The gas first passes through the filter screen 63 to filter out solid impurities such as dust, rust, and oil in the high-pressure gas, ensuring that the gas entering the nozzle 12 is clean. The filtered clean high-pressure gas enters the housing 1 through the air inlet pipe 2, passes through the sealing plate 10 and enters the rotary distributor 9, and is then shot at high speed by the three nozzles 12 towards the oscillating tube 13 that is aligned in turn.

[0037] Within the oscillating tube 13, the gas undergoes shock wave cooling and thermal separation. High-temperature hot gas exits through the bottom hot gas outlet pipe 15 via a flange-connected recovery pipeline, while low-temperature cold gas is stably output through the curved cold gas outlet pipe 14. During long-term operation, if the filter screen 63 becomes clogged with dust, the bolts 65 at the flange connection can be loosened, flange 2 4 removed, and the filter screen 63 quickly taken out for cleaning or replacement. This eliminates the need to disassemble the internal casing 1, making maintenance simple and quick. This effectively extends the service life of the core components of the refrigeration unit and ensures the continuity and reliability of the low-temperature cold source supply to the military test bench.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] The above description is only a preferred embodiment of the present utility model. 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 utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A wave-cooled refrigerator, comprising a housing (1), characterized in that: The bottom surface of the housing (1) is fixedly connected to the base (101). An air inlet pipe (2) is connected to the end side of the housing (1). A flange (3) is fixedly connected to the end face of the air inlet pipe (2). A flange (4) is fitted to the end side of the flange (3). A connecting pipe (5) is fixedly connected to the end side of the flange (4). A filter assembly (6) is installed between the flange (3) and the flange (4). A motor (7) is fixedly connected to the top surface of the housing (1). The output end of the motor (7) is fixedly connected to a rotating shaft (8), which is rotatably connected to the housing (1). A rotary distributor (9) is fixedly sleeved on the outer ring of the rotating shaft (8). A nozzle (12) is connected to the outer ring of the rotary distributor (9). Multiple oscillating tubes (13) are connected to the outer ring of the housing (1). Cold air outlet pipes (14) are connected to the ends of the multiple oscillating tubes (13). Hot air outlet pipes (15) are connected to the bottom surface of the housing (1).

2. The air-wave refrigerator according to claim 1, characterized in that: The filter assembly (6) includes a groove (61) formed in the flange (3), and a filter screen (63) is snapped into the groove (61).

3. The air-wave refrigerator according to claim 2, characterized in that: Multiple insert rods (62) are fixedly connected in the groove (61), and the filter screen (63) has corresponding holes (64) for insertion. The insert rods (62) are inserted into the holes (64).

4. The air-wave refrigerator according to claim 3, characterized in that: A bolt (65) is fixedly connected between flange one (3) and flange two (4), and a threaded hole for the bolt (65) is provided between flange one (3) and flange two (4).

5. A wave-cooled refrigerator according to claim 1, characterized in that: The number of nozzles (12) is less than the number of oscillating tubes (13), and the cold air outlet pipe (14) is bent.

6. The air-wave refrigerator according to claim 1, characterized in that: The top surface of the rotary distributor (9) is fixedly connected to a sealing plate (10), and the top surface of the sealing plate (10) is provided with an air inlet (11). The outer wall of the sealing plate (10) is fitted and sealed with the inner wall of the housing (1). The nozzle (12) and the oscillating tube (13) are aligned and connected in turn.

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