An air circulation refrigeration system and an air conditioner

Abstract

This invention provides an air-circulating refrigeration system and an air conditioner. The air-circulating refrigeration system includes a primary heat exchanger and an air turbine refrigeration assembly. The primary heat exchanger has a first heat exchange channel, and the air turbine refrigeration assembly has a compressor. The outlet of the first heat exchange channel is connected to the inlet of the compressor. The air-circulating refrigeration system also includes a thermoacoustic refrigeration assembly with a thermoacoustic engine and an engine heat absorber. The engine heat absorber is used to exchange heat with the first heat exchange channel. According to the technical solution of this invention, when the thermoacoustic refrigeration assembly is started, it can continuously exchange heat with the first heat exchange channel through the engine heat absorber, thereby avoiding the problem of limited ram air cold source in the prior art and improving the heat exchange efficiency of the primary heat exchanger.

Description

Technical Field

[0001] This utility model belongs to the field of air circulation refrigeration technology, specifically relating to an air circulation refrigeration system and an air conditioner. Background Technology

[0002] In modern aircraft, the air-cycle cooling system is the primary environmental control system used to regulate the temperature of the cabin and cockpit. The air-cycle cooling system includes a primary heat exchanger and an air turbine cooling assembly, which contains a compressor. Engine exhaust gas is cooled by the primary heat exchanger before flowing into the compressor for pressurization. This traditional air-cycle cooling system typically uses ram air as the cold source. Ram air is introduced into the primary heat exchanger through an air inlet outside the cabin and exchanges heat with the engine exhaust gas to cool it. However, at high speeds, the use of ram air is limited, resulting in lower heat exchange efficiency of the primary heat exchanger. Utility Model Content

[0003] Therefore, this utility model provides an air circulation refrigeration system and an air conditioner, which can solve the technical problem of low heat exchange efficiency caused by the use of ram air for cooling in the primary heat exchanger in the prior art.

[0004] To address the aforementioned problems, this utility model provides an air circulation refrigeration system, comprising a primary heat exchanger and an air turbine refrigeration assembly. The primary heat exchanger has a first heat exchange channel, and the air turbine refrigeration assembly has a compressor. The outlet of the first heat exchange channel is connected to the inlet of the compressor. The air circulation refrigeration system further includes a thermoacoustic refrigeration assembly, which has a thermoacoustic engine. The thermoacoustic engine has an engine heat absorber, wherein the engine heat absorber is used to exchange heat with the first heat exchange channel.

[0005] In some embodiments, the engine heat absorber has a heat absorption channel, and the primary heat exchanger has a second heat exchange channel capable of exchanging heat with the first heat exchange channel. The heat absorption channel and the second heat exchange channel are connected in series in a first refrigerant circulation loop to achieve heat exchange between the engine heat absorber and the first heat exchange channel.

[0006] In some embodiments, the thermoacoustic engine has an engine heat emitter; the thermoacoustic refrigeration assembly also has a thermoacoustic refrigerator, which has a refrigerator heat emitter and a refrigerator heat absorber, wherein the thermoacoustic refrigerator absorbs heat from the heating element (22) through the refrigerator heat absorber and releases heat through the refrigerator heat emitter.

[0007] The air circulation refrigeration system further includes a heat accumulator, which has a heat storage material and a heat release structure. The heat accumulator is used to absorb and store the heat released by the engine heat exchanger and / or the heat released by the refrigeration unit heat exchanger through the heat storage material, and to release the heat stored by the heat storage material through the heat release structure.

[0008] In some embodiments, the air turbine cooling assembly further includes a turbine, and the heat-dissipating structure is used for heat exchange with the outlet pipe of the turbine; and / or, the heat-dissipating structure is used for heat exchange with a water tank.

[0009] In some embodiments, when the heat-dissipating structure is used for heat exchange with the turbine's outlet pipe; and when the heat-dissipating structure is also used for heat exchange with the water tank,

[0010] The heat-releasing structure includes a first heat-releasing channel capable of exchanging heat with the heat storage material; the air circulation refrigeration system further includes a first heat-releasing branch, a second heat-releasing branch, and a first pump body. One end of the first heat-releasing channel is connected to one end of both the first heat-releasing branch and the second heat-releasing branch, and the other end of the first heat-releasing channel is connected to the other end of both the first heat-releasing branch and the second heat-releasing branch. The first pump body is used to drive the refrigerant to circulate between the first heat-releasing branch and the first heat-releasing channel, and to drive the refrigerant to circulate between the second heat-releasing branch and the first heat-releasing channel. The first heat-releasing branch is used to exchange heat with the outlet pipe of the turbine, thereby achieving heat exchange between the heat-releasing structure and the outlet pipe of the turbine; the second heat-releasing branch is used to exchange heat with the water tank, thereby achieving heat exchange between the heat-releasing structure and the water tank.

[0011] In some embodiments, the air circulation refrigeration system further includes a heat exchanger having a first A heat exchange channel and a second A heat exchange channel that can exchange heat with each other. The first A heat exchange channel is connected in series with the first heat dissipation branch, and the second A heat exchange channel serves as the outlet pipe of the turbine.

[0012] In some embodiments, a fourth switching valve is provided on the pipe at one end of the first heat-releasing branch; and / or, a sixth switching valve is provided on the pipe at the other end of the first heat-releasing branch; and / or, a fifth switching valve is provided on the pipe at one end of the second heat-releasing branch; and / or, a seventh switching valve is provided on the pipe at the other end of the second heat-releasing branch; and / or, the first pump body is disposed on the pipe at one end of the first heat-releasing channel.

[0013] In some embodiments, the heat accumulator has a heat storage channel capable of exchanging heat with the heat storage material; wherein,

[0014] When the heat accumulator absorbs the heat released by the engine heat exchanger through the heat storage material, the engine heat exchanger has a second heat release channel; one end of the heat storage channel is connected to one end of the second heat release channel, and the other end of the heat storage channel is connected to the other end of the second heat release channel to form a second refrigerant circulation loop, and a second pump body is provided on the second refrigerant circulation loop;

[0015] When the heat accumulator absorbs the heat released by the refrigerator heat exchanger through the heat storage material, the refrigerator heat exchanger has a third heat release channel; one end of the heat storage channel is connected to one end of the third heat release channel, and the other end of the heat storage channel is connected to the other end of the third heat release channel to form a third refrigerant circulation loop, and a third pump body is provided on the third refrigerant circulation loop.

[0016] In some embodiments, when the engine heat exchanger has a second heat release channel; and one end of the heat storage channel is connected to one end of the second heat release channel, and the other end of the heat storage channel is connected to the other end of the second heat release channel to form a second refrigerant circulation loop, and a second pump body is provided on the second refrigerant circulation loop; and the refrigerator heat exchanger has a third heat release channel; one end of the heat storage channel is connected to one end of the third heat release channel, and the other end of the heat storage channel is connected to the other end of the third heat release channel to form a third refrigerant circulation loop, and a third pump body is provided on the third refrigerant circulation loop,

[0017] The second pump body is installed on a pipeline at one end of the heat storage channel or on a pipeline at the other end of the heat storage channel; wherein the second pump body and the third pump body are the same pump body.

[0018] In some embodiments, when the engine heat exchanger has a second heat exchange channel, a third switching valve is provided on the pipeline of the second heat exchange channel; when the refrigerator heat exchanger has a third heat exchange channel, a second switching valve is provided on the pipeline of the third heat exchange channel.

[0019] In some embodiments, the refrigeration receiver has a first heat exchange channel B, and the heating element (22) is provided with a second heat exchange channel B. The refrigeration receiver is connected to the first heat exchange channel B and the second heat exchange channel B to form a fourth refrigerant circulation loop, so as to absorb the heat of the heating element (22) by utilizing the circulation of refrigerant in the fourth refrigerant circulation loop.

[0020] In some embodiments, the air circulation refrigeration system further includes a noise collector, the output of which is connected to the engine regenerator of the thermoacoustic engine. The engine regenerator is used to couple the noise collected by the noise collector with the sound waves generated by the thermoacoustic engine, and then output the processed noise to the regenerator of the thermoacoustic refrigeration machine after processing by a phase adjustment mechanism.

[0021] This utility model also provides an air conditioner, which includes the air circulation refrigeration system described in any one of the above-mentioned methods.

[0022] The air circulation refrigeration system and air conditioner provided by this utility model have the following beneficial effects:

[0023] 1. This utility model employs thermoacoustic cooling technology, using a thermoacoustic cooling component to replace the existing ram air cooling source. The thermoacoustic cooling component exchanges heat with the first heat exchange channel through the engine heat absorber of the thermoacoustic engine to cool the engine exhaust flowing through the first heat exchange channel. When the thermoacoustic cooling component is activated, it can continuously exchange heat with the first heat exchange channel through the engine heat absorber, thereby avoiding the problem of limited ram air cooling source in the prior art and improving the heat exchange efficiency of the primary heat exchanger.

[0024] 2. This utility model stores the waste heat in the thermoacoustic refrigeration component through a heat accumulator, which is used to heat the cold air at the turbine outlet, thereby increasing the turbine outlet temperature and effectively preventing ice blockage; at the same time, it supplies domestic hot water to the aircraft, greatly improving energy utilization efficiency.

[0025] 3. This utility model also collects aircraft noise through a noise collector and converts the acoustic energy in the aircraft noise into cooling energy through a thermoacoustic cooling component, thereby achieving efficient energy utilization. Attached Figure Description

[0026] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0027] Figure 1 This is a structural diagram of an air circulation refrigeration system provided in one embodiment of the present invention.

[0028] The attached figures are labeled as follows:

[0029] 1. Primary heat exchanger; 2. Compressor; 3. Turbine; 4. Thermoacoustic engine; 5. Thermoacoustic refrigerator; 6. Phase adjustment mechanism; 7. Heat accumulator; 8. Heat exchanger; 9. First heat release branch; 10. Second heat release branch; 11. Water tank; 12. First pump body; 13. Fourth switch valve; 14. Fifth switch valve; 15. Sixth switch valve; 16. Seventh switch valve; 17. Second switch valve; 18. Third switch valve; 19. Second pump body; 20. Fourth pump body; 21. First switch valve; 22. Heating element (22); 23. Noise collector; 24. Secondary heat exchanger; 25. Regenerator; 26. Water separator; 27. Condenser; 28. Pressure difference Sensor; 29. ​​Fourth refrigerant circulation loop; 30. First refrigerant circulation loop; 31. Turbine outlet pipe; 41. Engine heat absorber; 42. Engine regenerator; 43. Engine heat exotherm; 51. Refrigeration unit heat exotherm; 52. Refrigeration unit regenerator; 53. Refrigeration unit heat absorber; 81. First A heat exchange channel; 82. Second A heat exchange channel; 71. Heat storage channel; 72. First heat release channel; 73. Heat storage material; 221. Second B heat exchange channel; 401. Heat storage channel; 402. Second heat release channel; 501. Third heat release channel; 502. First B heat exchange channel; 1a. First heat exchange channel; 1b. Second heat exchange channel. Detailed Implementation

[0030] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0032] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0033] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0034] See also Figure 1 As shown, according to an embodiment of the present invention, an air circulation refrigeration system is provided, including a primary heat exchanger 1 and an air turbine refrigeration assembly. The primary heat exchanger 1 has a first heat exchange channel 1a, and the air turbine refrigeration assembly has a compressor 2. The outlet of the first heat exchange channel 1a is connected to the inlet of the compressor 2. The air circulation refrigeration system also includes a thermoacoustic refrigeration assembly, which has a thermoacoustic engine 4, and the thermoacoustic engine 4 has an engine heat absorber 41. The engine heat absorber 41 is used for heat exchange with the first heat exchange channel 1a.

[0035] In the above example, the engine exhaust can exchange heat with the engine heat absorber 41 as it flows through the first heat exchange channel 1a of the primary heat exchanger 1. The engine heat absorber 41 can absorb the heat from the engine exhaust through the first heat exchange channel 1a to cool the engine exhaust. However, compared to the prior art method where the primary heat exchanger 1 uses ram air to cool the engine exhaust, the ram air temperature is high when the aircraft is on the ground or during ascent or descent near the ground. In this case, the heat exchange efficiency between the ram air and the engine exhaust in the primary heat exchanger 1 is low, resulting in limited cooling effect on the engine exhaust. In this invention, thermoacoustic cooling technology is used, replacing the existing ram air cold source with a thermoacoustic cooling component. The thermoacoustic cooling component exchanges heat with the first heat exchange channel 1a through the engine heat absorber 41 of the thermoacoustic engine 4 to cool the engine exhaust flowing through the first heat exchange channel 1a. When the thermoacoustic cooling component is started, it can continuously exchange heat with the first heat exchange channel 1a through the engine heat absorber 41, thereby avoiding the problem of limited ram air cold source in the prior art and improving the heat exchange efficiency of the primary heat exchanger 1.

[0036] In order to enable the aforementioned engine heat absorber 41 to exchange heat with the first heat exchange channel 1a, in some embodiments, such as Figure 1 As shown, the aforementioned engine heat absorber 41 may have a heat absorption channel 401, and the primary heat exchanger 1 has a second heat exchange channel 1b capable of exchanging heat with the first heat exchange channel 1a. The heat absorption channel 401 and the second heat exchange channel 1b are connected in series in the first refrigerant circulation loop 30 to realize heat exchange between the engine heat absorber 41 and the first heat exchange channel 1a.

[0037] In the above example, when the refrigerant circulates in the first refrigerant circulation loop 30, the refrigerant circulates between the second heat exchange channel 1b of the primary heat exchanger 1 and the heat absorption channel 401 of the engine heat absorber 41. When the refrigerant flows through the heat absorption channel 401, it can be heated by the regenerator 25 of the thermoacoustic engine 4 and become a low-temperature refrigerant. Then, when the low-temperature refrigerant flows through the second heat exchange channel 1b, it can exchange heat with the first heat exchange channel 1a to cool the engine exhaust flowing through the first heat exchange channel 1a. The temperature of the low-temperature refrigerant rises after absorbing the heat of the engine exhaust. Then, the high-temperature refrigerant flows back into the heat absorption channel 401. This process is repeated to achieve heat exchange between the engine heat absorber 41 and the first heat exchange channel 1a.

[0038] It should be noted that the first refrigerant circulation loop 30 is equipped with a pump body, which is used to drive the refrigerant circulation within the first refrigerant circulation loop 30.

[0039] In some implementations, such as Figure 1As shown, the aforementioned thermoacoustic engine 4 has an engine heat exchanger 43, through which the thermoacoustic engine 4 releases heat. The thermoacoustic refrigeration assembly also includes a thermoacoustic refrigerator 5, which has a refrigerator heat exchanger 51 and a refrigerator heat absorber 53. The thermoacoustic refrigerator 5 absorbs heat from the heating element 22 through the refrigerator heat absorber 53 and releases heat through the refrigerator heat exchanger 51. The air circulation refrigeration system also includes a heat accumulator 7, which has a heat storage material 73 and a heat release structure. The heat accumulator 7 is used to absorb and store the heat released by the engine heat exchanger 43 and / or the heat released by the refrigerator heat exchanger 51 through the heat storage material 73, and releases the heat stored by the heat storage material 73 through the heat release structure.

[0040] In the above example, the engine heat exchanger 43 can release heat from the thermoacoustic engine 4, the refrigerator heat exchanger 51 can release heat from the thermoacoustic refrigerator 5, and the heat accumulator 7 can collect and store the heat released by the engine heat exchanger 43 and / or the refrigerator heat exchanger 51. When this heat is needed, the heat accumulator 7 can release the heat stored in the heat storage material 73 through the thermal structure, thus achieving efficient utilization of heat and avoiding heat waste.

[0041] It should be noted that the aforementioned heat-generating component 22 can be an electronic device on the aircraft that generates significant heat. Furthermore, with the continuous development of aerospace, the number and power of airborne electronic equipment on aircraft are constantly increasing, leading to a growing demand for cooling fluid. Traditional cooling systems are complex in structure, have a high failure rate, and are difficult to maintain. This invention utilizes the heat absorber 53 of the thermoacoustic refrigeration unit 5 to absorb the heat from airborne electronic equipment, achieving highly efficient cooling.

[0042] In some embodiments, the heat accumulator 7 described above can be a heat storage tank or the like.

[0043] In some implementations, such as Figure 1 As shown, the aforementioned air turbine cooling assembly also includes a turbine 3. The aforementioned heat dissipation structure is used to exchange heat with the turbine outlet pipe 31 to increase the temperature of the turbine outlet pipe 31 and effectively prevent ice blockage.

[0044] In some implementations, such as Figure 1 As shown, the aforementioned heat-exchanging structure is used to exchange heat with the water tank 11 to heat the water in the water tank 11 and supply domestic hot water for the aircraft.

[0045] In some embodiments, when the aforementioned heat-exchanging structure is used for heat exchange with the turbine outlet pipe 31, and also for heat exchange with the water tank 11, the aforementioned heat-exchanging structure includes a first heat-exchanging channel 72 capable of heat exchange with the heat storage material 73. The aforementioned air circulation refrigeration system also includes a first heat-exchanging branch 9, a second heat-exchanging branch 10, and a first pump body 12. One end of the first heat-exchanging channel 72 is connected to one end of both the first heat-exchanging branch 9 and the second heat-exchanging branch 10, and the other end of the first heat-exchanging channel 72 is connected to the other end of both the first heat-exchanging branch 9 and the second heat-exchanging branch 10. The first pump body 12 is used to drive the refrigerant to circulate between the first heat-exchanging branch 9 and the first heat-exchanging channel 72, and to drive the refrigerant to circulate between the second heat-exchanging branch 10 and the first heat-exchanging channel 72. The first heat-exchanging branch 9 is used for heat exchange with the turbine outlet pipe 31 to achieve heat exchange between the aforementioned heat-exchanging structure and the turbine outlet pipe 31. The second heat-exchange branch 10 is used to exchange heat with the water tank 11, so as to realize the heat exchange between the aforementioned heat-exchange structure and the water tank 11.

[0046] In the above example, when the refrigerant flows through the first heat release channel 72, it absorbs the heat released by the heat storage material 73 and becomes high-temperature refrigerant. A portion of the high-temperature refrigerant flows into the first heat release branch 9 and exchanges heat with the turbine outlet pipe 31 to heat the turbine outlet pipe 31. Another portion of the high-temperature refrigerant flows into the second heat release branch 10 and exchanges heat with the water tank 11 to heat the water in the water tank 11.

[0047] In order to achieve the purpose of heat exchange between the aforementioned first heat-exhausting branch 9 and the turbine outlet pipe 31, in some embodiments, such as Figure 1 As shown, the aforementioned air circulation refrigeration system may further include a heat exchanger 8, which has a first A heat exchange channel 81 and a second A heat exchange channel 82 that can exchange heat with each other. The first A heat exchange channel 81 is connected in series with the first heat dissipation branch 9, and the second A heat exchange channel 82 serves as the outlet pipe 31 of the aforementioned turbine.

[0048] In the above example, the heat exchanger 8 can be used to achieve the purpose of heat exchange between the first heat release branch 9 and the turbine outlet pipe 31.

[0049] In some implementations, such as Figure 1 As shown, a fourth switching valve 13 may be provided on the pipe at one end of the aforementioned first heat release branch 9. And / or, a sixth switching valve 15 may be provided on the pipe at the other end of the first heat release branch 9. Thus, when de-icing operation is not required on the turbine outlet pipe 31, at least one of the fourth switching valve 13 and the sixth switching valve 15 can be closed to shut down the first heat release branch 9.

[0050] In some embodiments, a fifth switching valve 14 may be provided on the pipe at one end of the aforementioned second heat release branch 10; and / or, a seventh switching valve 16 may be provided on the pipe at the other end of the second heat release branch 10. Thus, when it is not necessary to heat the water in the water tank 11, at least one of the fifth switching valve 14 and the seventh switching valve 16 can be closed to shut down the second heat release branch 10.

[0051] In some implementations, such as Figure 1 As shown, the aforementioned first pump body 12 can be installed on the pipeline at one end of the first heat release channel 72 so that the first pump body 12 can drive the refrigerant to circulate between the first heat release branch 9 and the first heat release channel 72, and can drive the refrigerant to circulate between the second heat release branch 10 and the first heat release channel 72.

[0052] In some implementations, such as Figure 1 As shown, the aforementioned heat accumulator 7 has a heat storage channel 71 capable of exchanging heat with the heat storage material 73. When the heat accumulator 7 absorbs heat released by the engine heat exchanger 43 through the heat storage material 73, the engine heat exchanger 43 has a second heat release channel 402 through which it releases heat. One end of the heat storage channel 71 is connected to one end of the second heat release channel 402, and the other end of the heat storage channel 71 is connected to the other end of the second heat release channel 402, forming a second refrigerant circulation loop. A second pump body 19 is provided on the second refrigerant circulation loop.

[0053] In the above example, when the second pump 19 is started, the second pump 19 can drive the refrigerant in the second refrigerant circulation loop to circulate. When the refrigerant flows through the second heat release channel 402, it can absorb the heat released by the engine heat exchanger 43 and become high-temperature refrigerant. Then, when the high-temperature refrigerant flows through the heat storage channel 71, it can exchange heat with the heat storage material 73 to transfer the heat to the heat storage material 73 for storage, thereby realizing the function of the heat storage device 7 absorbing the heat released by the engine heat exchanger 43 through the heat storage material 73.

[0054] In some embodiments, when the heat accumulator 7 absorbs heat released by the refrigerator heat exchanger 51 through the heat storage material 73, the refrigerator heat exchanger 51 has a third heat release channel 501 through which it releases heat. One end of the heat storage channel 71 is connected to one end of the third heat release channel 501, and the other end of the heat storage channel 71 is connected to the other end of the third heat release channel 501 to form a third refrigerant circulation loop. A third pump body is provided on the third refrigerant circulation loop.

[0055] In the above example, when the third pump is started, the third pump can drive the refrigerant in the third refrigerant circulation loop to circulate. When the refrigerant flows through the third heat release channel 501, it can absorb the heat released by the refrigerator heat exchanger 51 and become high-temperature refrigerant. Then, when the high-temperature refrigerant flows through the heat storage channel 71, it can exchange heat with the heat storage material 73 to transfer the heat to the heat storage material 73 for storage, thereby realizing the function of the heat storage device 7 absorbing the heat released by the refrigerator heat exchanger 51 through the heat storage material 73.

[0056] In some implementations, such as Figure 1 As shown, the second pump body 19 can be installed on the pipeline at one end of the heat storage channel 71, or the second pump body 19 can be installed on the pipeline at the other end of the heat storage channel 71. The second pump body 19 and the third pump body can be the same pump body, thus saving on the number of pump bodies and reducing costs.

[0057] In some implementations, such as Figure 1 As shown, when the engine heat exchanger 43 has a second heat dissipation channel 402, a third switching valve 18 can be provided on the pipeline of the second heat dissipation channel 402. The opening and closing of the second heat dissipation channel 402 can be controlled by the third switching valve 18, so as to open the second heat dissipation channel 402 to utilize the heat released by the engine heat exchanger 43, or close the second heat dissipation channel 402 as needed.

[0058] In some embodiments, when the refrigerator heat exchanger 51 has a third heat release channel 501, a second switching valve 17 may be provided on the pipeline of the third heat release channel 501. The second switching valve 17 can control the opening and closing of the third heat release channel 501, so as to open the third heat release channel 501 to utilize the heat released by the refrigerator heat exchanger 51, or close the third heat release channel 501 as needed.

[0059] To achieve the technical effect of the refrigeration unit's heat absorber 53 absorbing the heat from the heating element 22, in some embodiments, such as... Figure 1 As shown, the aforementioned refrigerator heat absorber 53 may have a first B heat exchange channel 502, and the heating element 22 is provided with a second B heat exchange channel 221. The refrigerator heat absorber 53 is connected to the first B heat exchange channel 502 and the second B heat exchange channel 221 to form a fourth refrigerant circulation loop 29, so as to absorb the heat of the heating element 22 by utilizing the circulation flow of refrigerant in the fourth refrigerant circulation loop 29.

[0060] It should be noted that a fourth pump body 20 may be provided on the aforementioned fourth refrigerant circulation loop 29 to drive the refrigerant circulation within the fourth refrigerant circulation loop 29. A first switching valve 21 may be provided on the fourth refrigerant circulation loop 29 to control the opening and closing of the fourth refrigerant circulation loop 29.

[0061] In some implementations, such as Figure 1 As shown, the aforementioned air circulation refrigeration system may further include a noise collector 23, the output of which is connected to the engine regenerator 42 of the thermoacoustic engine 4. The engine regenerator 42 is used to couple the noise collected by the noise collector 23 with the sound waves generated by the thermoacoustic engine 4, and after processing by the phase-adjustment mechanism 6, output it to the refrigerator regenerator 52 of the thermoacoustic refrigerator 5. The acoustic energy processed by the phase-adjustment mechanism 6 is generally transmitted to the refrigerator regenerator 52 through a resonant tube. The specific transmission process is existing technology.

[0062] In the above example, the engine regenerator 42 couples the sound waves generated in the thermoacoustic engine 4 with the sound source collected by the noise collector 23 into acoustic energy. After the acoustic impedance is adjusted by the phase adjustment mechanism 6, the energy is output to the refrigerator regenerator 52. Subsequently, the acoustic energy is consumed in the refrigerator regenerator 52. Through the consumption of acoustic energy, the thermoacoustic refrigerator 5 transfers heat from the refrigerator absorber 53 end to the refrigerator exothermic end. In this way, the thermoacoustic refrigeration component makes full use of the noise collected in the aircraft operating environment by the noise collector 23, thereby improving energy efficiency.

[0063] It should be noted here that the aforementioned thermoacoustic cooling components form a thermoacoustic system, and the structure of the thermoacoustic cooling components is existing technology. In some embodiments, such as... Figure 1 As shown, the thermoacoustic refrigeration assembly includes a thermoacoustic engine 4 and a thermoacoustic refrigerator 5. The thermoacoustic engine 4 includes an engine regenerator 42, an engine heat emitter 43, and an engine heat absorber 41. The engine heat emitter 43 is located at one end of the engine regenerator 42, and the engine heat absorber 41 is located at the other end of the engine regenerator 42. The engine regenerator 42 serves two purposes: firstly, it transfers heat by transferring the heat absorbed by the engine heat absorber 41 to the engine heat emitter 43; secondly, it is a thermo-acoustic energy conversion component. When the engine heat absorber 41 absorbs heat, a temperature gradient is generated, which in turn generates sound wave vibrations. The engine regenerator 42 drives the gas within it to undergo periodic compression, heat release, expansion, and heat absorption, thus repeatedly converting the heat absorbed by the engine heat absorber 41 into acoustic work. In summary, the engine heat absorber 41 absorbs heat from the primary heat exchanger 1. At this time, the gas inside the thermoacoustic engine 4 with the temperature difference generates self-excited pressure oscillation and produces resonant sound waves. At the same time, the engine heat exotherm 43 releases heat, which can be stored in the heat accumulator 7 through the transfer of refrigerant.

[0064] The thermoacoustic refrigerator 5 includes a refrigerator regenerator 52, a refrigerator heat exotherm 51, and a refrigerator heat absorber 53. The refrigerator heat exotherm 51 is located at one end of the refrigerator regenerator 52, and the refrigerator heat absorber 53 is located at the other end of the refrigerator regenerator 52. The engine regenerator 42 is connected to the refrigerator regenerator 52 via a phase adjustment mechanism 6. Similar to the engine regenerator 42, the refrigerator regenerator 52 not only transfers heat but also functions as a sound-to-cold energy conversion component. The refrigerator regenerator 52 pumps heat from the refrigerator heat absorber 53 to the refrigerator heat exotherm 51 by consuming acoustic energy, thereby achieving cooling at the refrigerator heat absorber 53.

[0065] The aforementioned phase-adjustment mechanism 6 is used to adjust the acoustic impedance to match the sound field, thereby improving the thermo-acoustic-cooling conversion efficiency. The sound waves generated in the thermoacoustic engine 4 and the sound waves collected in the noise collector 23 are coupled into acoustic energy. The acoustic impedance is adjusted by the phase-adjustment mechanism 6 to match the sound field required by the thermoacoustic refrigerator 5, and then transmitted to the refrigerator regenerator 52 of the thermoacoustic refrigerator 5 through the resonant tube. The acoustic energy is consumed in the refrigerator regenerator 52. Through the consumption of acoustic energy, the refrigerator regenerator 52 transfers heat from the refrigerator absorber 53 end to the refrigerator exotherm 51 end. The refrigerator absorber 53 can absorb the heat of the onboard electronic equipment through the circulation of refrigerant, thereby cooling the electronic equipment.

[0066] It should be noted that the aforementioned first switching valve 21 to the seventh switching valve 16 can all be solenoid valves, etc.

[0067] In some embodiments, the present invention also provides an air conditioner that may include any of the above-described air circulation refrigeration systems.

[0068] For ease of understanding, the overall structure of this utility model will be described below, and its working principle will be explained.

[0069] like Figure 1 As shown, the air circulation refrigeration system of this invention also includes a secondary heat exchanger 24, a regenerator 25, a condenser 27, and a water separator 26. Hot air from upstream, such as engine exhaust, first enters the primary heat exchanger 1 for cooling, then enters the compressor 2 for pressurization, and then enters the secondary heat exchanger 24 for a second cooling. The cold side of the primary heat exchanger 1 is cooled by the engine heat absorber 41. Air exiting the hot side of the secondary heat exchanger 24 exchanges heat with the regenerator 25 and condenser 27 before entering the water separator 26, where free water in the air is separated and discharged. The separated air enters the regenerator 25 to evaporate any remaining free water, then enters the turbine 3 for expansion and cooling, and finally passes through the condenser 27 to deliver the cooled air to the cabin.

[0070] The air circulation refrigeration system of this invention has a heat storage function. Specifically, the engine heat absorber 41 absorbs heat from the primary heat exchanger 1. The engine regenerator 42 converts a portion of the heat absorbed by the engine heat absorber 41 into acoustic energy, which is then transferred to the refrigeration regenerator 52. The heat that cannot be converted is released through the engine heat exotherm 43 and stored in the heat accumulator 7 via the refrigerant. Simultaneously, the acoustic energy transferred to the refrigeration regenerator 52 is consumed to transfer the heat from the refrigeration heat absorber 53 to the refrigeration heat exotherm 51 for release, and then stored in the heat accumulator 7 via the refrigerant. The refrigeration heat absorber 53 can be used to absorb heat from electronic equipment to cool it down.

[0071] The air circulation refrigeration system of this utility model has a de-icing function. Specifically, a differential pressure sensor 28 is arranged between the outlet of turbine 3 and the cold edge outlet of condenser 27. When ice forms from the outlet of turbine 3 to the cold edge of condenser 27 and gradually accumulates to form ice blockage, the pressure difference will increase. When the pressure difference increases to a preset value, such as 5 to 9 kPa, it is considered that ice has begun to accumulate from the outlet of turbine 3 to the cold edge of condenser 27. At this time, the fourth switch valve 13 and the sixth switch valve 15 are opened, and the first pump body 12 is opened, so that the heat in the heat accumulator 7 can exchange heat with the outlet pipe 31 of the turbine to increase the outlet temperature of turbine 3 and achieve the purpose of de-icing.

[0072] The air circulation refrigeration system of this utility model has a hot water production function. Specifically, by opening the fifth switch valve 14 and the seventh switch valve 16, and opening the first pump body 12, the heat in the heat storage tank 7 is exchanged with the water tank 11 to realize the hot water production function.

[0073] Thermoacoustic refrigeration technology, due to its elimination of moving mechanical parts, reduces mechanical wear and significantly extends service life. Furthermore, this system typically uses inert gas as the working medium and can be driven by various low-grade energy sources, making it environmentally friendly. This invention combines thermoacoustic refrigeration technology with air circulation refrigeration, using a thermoacoustic refrigeration system to replace the traditional ram air cold source. It collects heat from the primary heat exchanger 1, achieving heat-sound-cold energy conversion, which can cool electronic equipment. It features a simple structure, high reliability, and environmental friendliness. Simultaneously, this invention also collects aircraft noise and converts the acoustic energy of the aircraft noise into cooling energy through the thermoacoustic refrigeration system, achieving efficient energy utilization. Furthermore, this invention stores the waste heat from the thermoacoustic refrigeration system in a heat storage device 7, such as a heat storage tank, for heating the cold air at the turbine outlet, thereby increasing the turbine outlet temperature and effectively preventing ice blockage. It also supplies domestic hot water to the aircraft, greatly improving energy efficiency.

[0074] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0075] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this 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 this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An air-circulating refrigeration system, comprising a primary heat exchanger (1) and an air turbine refrigeration assembly, wherein the primary heat exchanger (1) has a first heat exchange channel (1a), and the air turbine refrigeration assembly has a compressor (2), wherein the outlet of the first heat exchange channel (1a) is connected to the inlet of the compressor (2); characterized in that: The air circulation cooling system further includes a thermoacoustic cooling component, which has a thermoacoustic engine (4) and an engine heat absorber (41), wherein the engine heat absorber (41) is used to exchange heat with the first heat exchange channel (1a).

2. The air circulation refrigeration system according to claim 1, characterized in that: The engine heat absorber (41) has a heat absorption channel (401), and the primary heat exchanger (1) has a second heat exchange channel (1b) that can exchange heat with the first heat exchange channel (1a). The heat absorption channel (401) and the second heat exchange channel (1b) are connected in series in the first refrigerant circulation loop (30) to realize heat exchange between the engine heat absorber (41) and the first heat exchange channel (1a).

3. The air cycle refrigeration system of claim 1 or 2, wherein: The thermoacoustic engine (4) has an engine heat emitter (43); the thermoacoustic refrigeration assembly also has a thermoacoustic refrigerator (5), the thermoacoustic refrigerator (5) has a refrigerator heat emitter (51) and a refrigerator heat absorber (53), the thermoacoustic refrigerator (5) absorbs heat from the heating element (22) through the refrigerator heat absorber (53) and releases heat through the refrigerator heat emitter (51); The air circulation refrigeration system further includes a heat storage device (7), which has a heat storage material (73) and a heat release structure. The heat storage device (7) is used to absorb and store the heat released by the engine heat exchanger (43) and / or the heat released by the refrigeration engine heat exchanger (51) through the heat storage material (73), and to release the heat stored by the heat storage material (73) through the heat release structure.

4. The air circulation refrigeration system according to claim 3, characterized in that: The air turbine cooling assembly also has a turbine (3), and the heat dissipation structure is used to exchange heat with the outlet pipe (31) of the turbine; and / or, the heat dissipation structure is used to exchange heat with the water tank (11).

5. The air cycle refrigeration system of claim 4, wherein: When the heat-dissipating structure is used for heat exchange with the turbine outlet pipe (31); and when the heat-dissipating structure is also used for heat exchange with the water tank (11), The heat-exchanging structure includes a first heat-exchanging channel (72) capable of exchanging heat with the heat storage material (73); the air circulation refrigeration system further includes a first heat-exchanging branch (9), a second heat-exchanging branch (10), and a first pump body (12). One end of the first heat-exchanging channel (72) is connected to one end of both the first heat-exchanging branch (9) and the second heat-exchanging branch (10), and the other end of the first heat-exchanging channel (72) is connected to the other end of both the first heat-exchanging branch (9) and the second heat-exchanging branch (10). The first pump body (12) The refrigerant is used to drive the refrigerant to circulate between the first heat release branch (9) and the first heat release channel (72), and to drive the refrigerant to circulate between the second heat release branch (10) and the first heat release channel (72); wherein, the first heat release branch (9) is used to exchange heat with the outlet pipe (31) of the turbine to realize the heat exchange between the heat release structure and the outlet pipe (31) of the turbine; the second heat release branch (10) is used to exchange heat with the water tank (11) to realize the heat exchange between the heat release structure and the water tank (11).

6. The air cycle refrigeration system of claim 5, wherein: It also includes a heat exchanger (8), which has a first A heat exchange channel (81) and a second A heat exchange channel (82) that can exchange heat with each other. The first A heat exchange channel (81) is connected in series with the first heat dissipation branch (9), and the second A heat exchange channel (82) serves as the outlet pipe (31) of the turbine.

7. The air circulation refrigeration system according to claim 5 or 6, characterized in that: A fourth switch valve (13) is provided on the pipeline at one end of the first heat release branch (9); and / or, a sixth switch valve (15) is provided on the pipeline at the other end of the first heat release branch (9); and / or, a fifth switch valve (14) is provided on the pipeline at one end of the second heat release branch (10); and / or, a seventh switch valve (16) is provided on the pipeline at the other end of the second heat release branch (10); and / or, the first pump body (12) is located on the pipeline at one end of the first heat release channel (72).

8. The air cycle refrigeration system of claim 3, wherein: The heat accumulator (7) has a heat storage channel (71) capable of exchanging heat with the heat storage material (73); wherein, When the heat accumulator (7) absorbs the heat released by the engine heat exchanger (43) through the heat storage material (73), the engine heat exchanger (43) has a second heat release channel (402); one end of the heat storage channel (71) is connected to one end of the second heat release channel (402), and the other end of the heat storage channel (71) is connected to the other end of the second heat release channel (402) to form a second refrigerant circulation loop, and a second pump body (19) is provided on the second refrigerant circulation loop; When the heat storage device (7) absorbs the heat released by the refrigerator heat exchanger (51) through the heat storage material (73), the refrigerator heat exchanger (51) has a third heat release channel (501); one end of the heat storage channel (71) is connected to one end of the third heat release channel (501), and the other end of the heat storage channel (71) is connected to the other end of the third heat release channel (501) to form a third refrigerant circulation loop, and a third pump body is provided on the third refrigerant circulation loop.

9. The air cycle refrigeration system of claim 8, wherein: When the engine heat exchanger (43) has a second heat release channel (402); and one end of the heat storage channel (71) is connected to one end of the second heat release channel (402), and the other end of the heat storage channel (71) is connected to the other end of the second heat release channel (402) to form a second refrigerant circulation loop, and a second pump body (19) is provided on the second refrigerant circulation loop; and the refrigerator heat exchanger (51) has a third heat release channel (501); one end of the heat storage channel (71) is connected to one end of the third heat release channel (501), and the other end of the heat storage channel (71) is connected to the other end of the third heat release channel (501) to form a third refrigerant circulation loop, and a third pump body is provided on the third refrigerant circulation loop, The second pump body (19) is installed on a pipeline at one end of the heat storage channel (71) or on a pipeline at the other end of the heat storage channel (71); wherein the second pump body (19) and the third pump body are the same pump body.

10. The air circulation refrigeration system according to claim 8 or 9, characterized in that: When the engine heat exchanger (43) has a second heat exchange channel (402), a third switching valve (18) is provided on the pipeline of the second heat exchange channel (402); when the refrigerator heat exchanger (51) has a third heat exchange channel (501), a second switching valve (17) is provided on the pipeline of the third heat exchange channel (501).

11. The air circulation refrigeration system according to claim 3, characterized in that: The refrigeration receiver (53) has a first B heat exchange channel (502), and the heating element (22) is provided with a second B heat exchange channel (221). The refrigeration receiver (53) is connected to the second B heat exchange channel (221) through the first B heat exchange channel (502) to form a fourth refrigerant circulation loop (29) so as to absorb the heat of the heating element (22) by means of the circulation of refrigerant in the fourth refrigerant circulation loop (29).

12. The air cycle refrigeration system of claim 3, wherein: It also includes a noise collector (23), the output of which is connected to the engine regenerator (42) of the thermoacoustic engine (4). The engine regenerator (42) is used to couple the noise collected by the noise collector (23) with the sound waves generated by the thermoacoustic engine (4), and output the noise to the regenerator (52) of the thermoacoustic refrigerator (5) after processing by the phase adjustment mechanism (6).

13. An air conditioner characterized by comprising: The air circulation refrigeration system includes any one of claims 1-12.

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