Turbine refrigerator experiment system

Abstract

The utility model discloses a turbine refrigerator experiment system which comprises a compressor, a heat exchanger and an expansion machine, the compressor is provided with a compression inlet and a compression outlet, and the compressor is used for compressing air into high-temperature, high-pressure and high-speed hot air flow; an inlet of the heat exchanger is communicated with the compression outlet, and the heat exchanger converts high-temperature, high-pressure and high-speed hot airflow into low-temperature, high-pressure and high-speed airflow through heat exchange; a snakelike heat exchange flow channel is arranged in the heat exchanger, an inlet of the heat exchange flow channel is communicated with the inner side of an inlet of the heat exchanger, an outlet of the heat exchange flow channel is communicated with the inner side of an outlet of the heat exchanger, and the heat exchanger is provided with a plurality of heat exchange fin plates which are arranged in parallel at equal intervals. The expansion machine is provided with an expansion inlet and an expansion outlet, the expansion inlet is communicated with the outlet of the heat exchanger, and the expansion machine is used for expanding low-temperature, high-pressure and high-speed airflow into low-temperature, normal-pressure and low-speed cold air. The problem that the effect and efficiency are not ideal when air serves as a heat exchange working medium can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, in particular to a turbine refrigerator experimental system. Background Art

[0002] At present, commonly used refrigerators generally use heat exchange to initially reduce the temperature of the airflow, and then use expansion to further reduce the temperature of the airflow, thereby preparing cold air. Among them, heat exchange is generally carried out by a heat exchanger, and in order to ensure the heat exchange efficiency of the heat exchanger, it is generally necessary to set a heat exchange medium in the heat exchanger, and use the heat exchange medium to absorb the heat in the airflow, thereby reducing the temperature of the airflow; however, this method requires that the heat absorbed in the heat exchange medium be discharged after the heat exchange is completed, so that the heat exchange medium can return to its initial state before it can work smoothly again. Therefore, a structure for dissipating and circulating the heat exchange medium is required, which increases the cost of the refrigerator.

[0003] If no heat exchange medium is used, or air is used as the heat exchange medium, the required heat absorption efficiency and heat absorption effect cannot be achieved, resulting in unsatisfactory refrigeration effect. Utility Model Content

[0004] The utility model aims to provide a turbo refrigerator experimental system to solve the problem that the effect and efficiency are not ideal when air is used as a heat exchange medium.

[0005] The utility model is realized by the following technical solutions:

[0006] A turbo refrigerator experimental system comprises a compressor, the compressor being provided with a compression inlet and a compression outlet, the compressor being used to compress air into a high-temperature, high-pressure, high-speed hot air flow; a heat exchanger, the inlet of the heat exchanger being connected to the compression outlet, the heat exchanger converting the high-temperature, high-pressure, high-speed hot air flow into a low-temperature, high-pressure, high-speed air flow through heat exchange; a serpentine heat exchange channel being provided in the heat exchanger, the inlet of the heat exchange channel being connected to the inner side of the inlet of the heat exchanger, the outlet of the heat exchange channel being connected to the inner side of the outlet of the heat exchanger, the heat exchanger being provided with a plurality of heat exchange fins, all of which are arranged in parallel and equidistantly; an expander, the expander being provided with an expansion inlet and an expansion outlet, the expansion inlet being connected to the outlet of the heat exchanger, the expander being used to expand the low-temperature, high-pressure, high-speed air flow into low-temperature, normal-pressure, low-speed cold air.

[0007] Optionally, the heat exchange fins are inserted into the heat exchanger to divide the heat exchanger into multiple partitions; a serpentine flow channel section is provided in each partition; both ends of the flow channel section are respectively connected to two adjacent flow channel sections on both sides to form the heat exchange flow channel.

[0008] Optionally, the heat exchanger is in the shape of a cuboid; the heat exchange fins are in the shape of a rectangular plate, the long sides of the heat exchange fins are parallel to the long sides of the heat exchanger, and the wide sides of the heat exchange fins are parallel to the wide sides of the heat exchanger; the size of the heat exchange fins is slightly larger than the size of the heat exchanger.

[0009] Optionally, the heat exchange fin plate has a plurality of heat exchange holes, and all of the heat exchange holes are arranged in parallel; the heat exchange holes extend along the width direction of the heat exchange fin plate; and the heat exchange holes penetrate the heat exchange fin plate along the thickness direction.

[0010] Optionally, the heat exchange holes are equidistantly covered on the heat exchange fins; the heat exchange holes at the same position of all the heat exchange fins are connected in sequence to form a heat dissipation channel extending and penetrating along the thickness direction of the heat exchanger, and the heat dissipation channel and the heat exchange flow channel are isolated from each other.

[0011] Optionally, the compressor is provided with a compression volute and a compression impeller; the compression impeller is arranged in the compression volute, and the end face of the compression impeller faces the end face of the compression volute; the compression inlet is arranged on the end face of the compression volute, and the air induced end of the compression impeller is arranged toward the compression inlet; the compression outlet is arranged on the side of the compression volute.

[0012] Optionally, the expander is provided with an expansion volute and an expansion impeller; the expansion impeller is arranged in the expansion volute, and the end face of the expansion impeller faces the end face of the expansion volute; the expansion inlet is arranged on the side of the expansion volute; the expansion outlet is arranged on the end face of the expansion volute, and the exhaust end of the expansion impeller is arranged toward the expansion outlet.

[0013] Optionally, the compression volute and the expansion volute have opposite rotation directions; a double-headed motor is also included, and both ends of the output shaft of the double-headed motor are respectively connected to the compression impeller and the expansion impeller; the double-headed motor is clamped between the compression volute and the expansion volute, and is fixedly connected to the compression volute and the expansion volute.

[0014] Optionally, the compression inlet is connected to an air source pipe, and the expansion outlet is connected to an exhaust pipe; and an insulation chamber is also included, and the insulation chamber is connected to the air source pipe and the exhaust pipe respectively.

[0015] Optionally, the compressor, the heat exchanger and the expander are all arranged outside the insulation chamber.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] The turbo refrigerator experimental system provided by the utility model, by setting a compressor, sucks in and compresses air at normal temperature and pressure to form a high-temperature, high-pressure, high-speed hot air flow, which not only increases the density of the air flow, but also increases the flow rate of the air flow; on this basis, by setting a heat exchanger, a serpentine heat exchange flow channel is set in the heat exchanger, so that the high-temperature, high-pressure, high-speed hot air flow compressed by the compressor flows rapidly along the heat exchange flow channel in a serpentine path, thereby extending the heat exchange path, and during the flow process, the air flow continues to flow in close contact with the inner wall of the heat exchanger, thereby increasing the relative speed between the air and the air outside the heat exchanger, thereby effectively improving the heat exchange efficiency, and, due to the compression, the temperature of the air flow at this time is much higher than that of the air outside the heat exchanger. The temperature of the air is higher than that of the air, so the thermal gradient is larger, which can further ensure the heat exchange efficiency; by setting the heat exchange fins, the contact area between the heat exchanger and the external environment is further increased, thereby further increasing the heat exchange area, so as to further improve the heat exchange efficiency, thereby obtaining a low-temperature, high-pressure, and high-speed airflow; on this basis, by setting an expander, the low-temperature, high-pressure, and high-speed airflow obtained through the heat exchanger is further expanded, so that the flow rate of the airflow drops sharply and the temperature is further reduced, thereby obtaining low-temperature, normal pressure, and low-speed cold air; through the mutual cooperation of the above-mentioned characteristics, the turbo refrigerator experimental system can effectively solve the problem of unsatisfactory effect and efficiency when air is used as the heat exchange working medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0019] Figure 1 A schematic front view of a turbo refrigerator experimental system provided by an embodiment of the utility model;

[0020] Figure 2 A schematic side view of a turbo refrigerator experimental system provided in an embodiment of the utility model.

[0021] Marks and corresponding parts names in the attached drawings:

[0022] 10-compressor; 11-compression inlet; 12-compression outlet; 13-compression volute; 15-air source pipe; 20-heat exchanger; 21-heat exchange fins; 211-heat exchange holes; 30-expander; 31-expansion inlet; 32-expansion outlet; 33-expansion volute; 35-exhaust pipe; 40-double-head motor; 50-insulation chamber. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0024] Example

[0025] Please refer to Figure 1 and Figure 2 The present embodiment provides a turbo refrigerator experimental system, comprising a compressor 10, the compressor 10 is provided with a compression inlet 11 and a compression outlet 12, the compressor 10 is used to compress air into a high-temperature, high-pressure, high-speed hot air flow; the second comprises a heat exchanger 20, the inlet of the heat exchanger 20 is connected to the compression outlet 12, the heat exchanger 20 converts the high-temperature, high-pressure, high-speed hot air flow into a low-temperature, high-pressure, high-speed air flow through heat exchange; the heat exchanger 20 is provided with a serpentine heat exchange flow channel, the heat exchange The inlet of the flow channel is connected to the inner side of the inlet of the heat exchanger 20, and the outlet of the heat exchange flow channel is connected to the inner side of the outlet of the heat exchanger 20. The heat exchanger 20 is provided with a plurality of heat exchange fins 21, and all the heat exchange fins 21 are arranged in parallel and equidistantly; the third includes an expander 30, and the expander 30 is provided with an expansion inlet 31 and an expansion outlet 32. The expansion inlet 31 is connected to the outlet of the heat exchanger 20, and the expander 30 is used to expand the low-temperature, high-pressure, and high-speed airflow into low-temperature, normal-pressure, and low-speed cold air.

[0026] The turbo refrigerator experimental system provided in this embodiment, by setting up a compressor 10, sucks in and compresses air at normal temperature and pressure to form a high-temperature, high-pressure, and high-speed hot air flow, which not only increases the density of the air flow, but also increases the flow rate of the air flow; on this basis, by setting up a heat exchanger 20, a serpentine heat exchange flow channel (not shown) is set in the heat exchanger 20, so that the high-temperature, high-pressure, and high-speed hot air flow compressed by the compressor 10 flows rapidly along the heat exchange flow channel in a serpentine path, thereby extending the heat exchange path, and during the flow process, the air flow continues to flow in contact with the inner wall of the heat exchanger 20, thereby increasing the relative speed between the air and the air outside the heat exchanger 20, thereby effectively improving the heat exchange efficiency, and due to the compression, the air flow at this time The temperature is much higher than the temperature of the air, so the thermal gradient is large, which can further ensure the heat exchange efficiency; by setting the heat exchange fins 21, the contact area between the heat exchanger 20 and the external environment is further increased, thereby further improving the heat exchange area, so as to further improve the heat exchange efficiency, thereby obtaining a low-temperature, high-pressure, and high-speed airflow; on this basis, by setting the expander 30, the low-temperature, high-pressure, and high-speed airflow obtained through the heat exchanger 20 is further expanded, so that the flow rate of the airflow drops sharply and the temperature is further reduced, thereby obtaining low-temperature, normal pressure, and low-speed cold air; through the mutual coordination of the above-mentioned characteristics, the turbine refrigerator experimental system can effectively solve the problem of unsatisfactory effect and efficiency when air is used as the heat exchange working medium.

[0027] In order to further explain the specific structure of the heat exchange flow channel, the heat exchange fin 21 is inserted into the heat exchanger 20 to divide the heat exchanger 20 into multiple partitions; a serpentine flow channel section is provided in each of the partitions; the two ends of the flow channel section are respectively connected with the two adjacent flow channel sections on both sides to form the heat exchange flow channel.

[0028] Through the above arrangement, the heat exchange flow channel can be evenly filled in each space in the heat exchanger 20 , so that the heat exchange flow channel fully utilizes the internal space of the heat exchanger 20 .

[0029] Preferably, the heat exchanger 20 is in the shape of a cuboid; the heat exchange fins 21 are in the shape of a rectangular plate, the long sides of the heat exchange fins 21 are parallel to the long sides of the heat exchanger 20 , and the wide sides of the heat exchange fins 21 are parallel to the wide sides of the heat exchanger 20 ; the size of the heat exchange fins 21 is slightly larger than the size of the heat exchanger 20 .

[0030] In order to further improve the heat exchange efficiency of the heat exchange fin plate 21, the heat exchange fin plate 21 is provided with a plurality of heat exchange holes 211, and all the heat exchange holes 211 are arranged in parallel; the heat exchange holes 211 extend along the width direction of the heat exchange fin plate 21; and the heat exchange holes 211 penetrate the heat exchange fin plate along the thickness direction.

[0031] Since the heat exchanger 20 has length, width and thickness, the heat exchange efficiency becomes worse as it approaches the middle. To solve this problem, the heat exchange holes 211 are equidistantly covered on the heat exchange fins 21; the heat exchange holes 211 at the same position of all the heat exchange fins 21 are connected in sequence to form a heat dissipation channel extending and penetrating along the thickness direction of the heat exchanger 20, and the heat dissipation channel and the heat exchange flow channel are isolated from each other.

[0032] Through the above arrangement, the heat dissipation channel is utilized to enable the middle portion of the heat exchanger 20 to be in contact with the external environment for heat exchange, thereby ensuring the heat exchange efficiency of the middle portion of the heat exchanger 20 .

[0033] In order to further explain the specific structure of the compressor 10, the compressor 10 is provided with a compression volute 13 and a compression impeller (not shown); the compression impeller is arranged in the compression volute 13, and the end face of the compression impeller faces the end face of the compression volute 13; the compression inlet 11 is arranged on the end face of the compression volute 13, and the air induced end of the compression impeller is arranged toward the compression inlet 11; the compression outlet 12 is arranged on the side of the compression volute 13.

[0034] In order to further explain the specific structure of the expander 30, the expander 30 is provided with an expansion volute 33 and an expansion impeller (not shown); the expansion impeller is arranged in the expansion volute 33, and the end face of the expansion impeller faces the end face of the expansion volute 33; the expansion inlet 31 is arranged on the side of the expansion volute 33; the expansion outlet 32 ​​is arranged on the end face of the expansion volute 33, and the exhaust end of the expansion impeller is arranged toward the expansion outlet 32.

[0035] In order to improve the integrity of the system structure, the compression volute 13 and the expansion volute 33 have opposite rotation directions; it also includes a double-headed motor 40, and the two ends of the output shaft of the double-headed motor 40 are respectively connected to the compression impeller and the expansion impeller; the double-headed motor 40 is clamped between the compression volute 13 and the expansion volute 33, and is fixedly connected to the compression volute 13 and the expansion volute 33.

[0036] In order to achieve air circulation while cooling, the compression inlet 11 is connected to the air source pipe 15, and the expansion outlet 32 ​​is connected to the exhaust pipe 35; it also includes an insulation chamber 50, which is connected to the air source pipe 15 and the exhaust pipe 35 respectively.

[0037] In order to prevent the heat generated by the compressor 10 , the heat exchanger 20 and the expander 30 during operation from affecting the temperature in the insulation chamber 50 , the compressor 10 , the heat exchanger 20 and the expander 30 are all arranged outside the insulation chamber 50 .

[0038] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A turbo refrigerator experimental system, characterized in that: include: A compressor (10), the compressor (10) being provided with a compression inlet (11) and a compression outlet (12), the compressor (10) being used to compress air into a hot air flow of high temperature, high pressure and high speed; a heat exchanger (20), wherein the inlet of the heat exchanger (20) is in communication with the compression outlet (12), and the heat exchanger (20) converts the high-temperature, high-pressure, high-speed hot air flow into a low-temperature, high-pressure, high-speed air flow through heat exchange; The heat exchanger (20) is provided with a serpentine heat exchange channel, the inlet of the heat exchange channel is connected to the inner side of the inlet of the heat exchanger (20), and the outlet of the heat exchange channel is connected to the inner side of the outlet of the heat exchanger (20). The heat exchanger (20) is provided with a plurality of heat exchange fins (21), and all the heat exchange fins (21) are arranged in parallel and equidistantly. An expander (30), wherein the expander (30) is provided with an expansion inlet (31) and an expansion outlet (32), wherein the expansion inlet (31) is connected to the outlet of the heat exchanger (20), and the expander (30) is used to expand a low-temperature, high-pressure, high-speed airflow into low-temperature, normal-pressure, low-speed cold air.

2. The turbo refrigerator experimental system according to claim 1, characterized in that: The heat exchange fin plate (21) is inserted into the heat exchanger (20) to divide the heat exchanger (20) into a plurality of compartments; Each of the partitions is provided with a serpentine flow channel section; Both ends of the flow channel section are respectively connected with two adjacent flow channel sections on both sides to form the heat exchange flow channel.

3. The turbo refrigerator experimental system according to claim 2, characterized in that: The heat exchanger (20) is in the shape of a rectangular parallelepiped; The heat exchange fin plate (21) is in the shape of a rectangular plate, the long side of the heat exchange fin plate (21) is parallel to the long side of the heat exchanger (20), and the wide side of the heat exchange fin plate (21) is parallel to the wide side of the heat exchanger (20); The size of the heat exchange fin (21) is slightly larger than the size of the heat exchanger (20).

4. The turbo refrigerator experimental system according to claim 3, characterized in that: The heat exchange fin plate (21) is provided with a plurality of heat exchange holes (211), and all the heat exchange holes (211) are arranged in parallel; The heat exchange holes (211) extend along the width direction of the heat exchange fins (21); The heat exchange holes (211) penetrate the heat exchange fins along the thickness direction.

5. The turbo refrigerator experimental system according to claim 4, characterized in that: The heat exchange holes (211) are equidistantly covered on the heat exchange fins (21); The heat exchange holes (211) at the same position of all the heat exchange fins (21) are connected in sequence to form a heat dissipation channel extending and penetrating along the thickness direction of the heat exchanger (20), and the heat dissipation channel and the heat exchange flow channel are isolated from each other.

6. The turbo refrigerator experimental system according to claim 1, characterized in that: The compressor (10) is provided with a compression volute (13) and a compression impeller; The compression impeller is arranged in the compression volute (13), and the end surface of the compression impeller faces the end surface of the compression volute (13); The compression inlet (11) is arranged on the end surface of the compression volute (13), and the air induction end of the compression impeller is arranged toward the compression inlet (11); The compression outlet (12) is arranged on a side surface of the compression volute (13).

7. The turbo refrigerator experimental system according to claim 6, characterized in that: The expander (30) is provided with an expansion volute (33) and an expansion impeller; The expansion impeller is arranged in the expansion volute (33), and the end surface of the expansion impeller faces the end surface of the expansion volute (33); The expansion inlet (31) is arranged on the side of the expansion volute (33); The expansion outlet (32) is arranged on the end surface of the expansion volute (33), and the exhaust end of the expansion impeller is arranged toward the expansion outlet (32).

8. The turbo refrigerator experimental system according to claim 7, characterized in that: The compression volute (13) and the expansion volute (33) have opposite rotation directions; It also includes a double-headed motor (40), wherein two ends of an output shaft of the double-headed motor (40) are respectively connected to the compression impeller and the expansion impeller; The double-headed motor (40) is sandwiched between the compression volute (13) and the expansion volute (33), and is fixedly connected to the compression volute (13) and the expansion volute (33).

9. The turbo refrigerator experimental system according to claim 1, characterized in that: The compression inlet (11) is connected to an air source pipe (15), and the expansion outlet (32) is connected to an exhaust pipe (35); It also includes a heat-insulating chamber (50), wherein the heat-insulating chamber (50) is respectively connected to the air source pipe (15) and the exhaust pipe (35).

10. The turbo refrigerator experimental system according to claim 9, characterized in that: The compressor (10), the heat exchanger (20) and the expander (30) are all arranged outside the heat insulation chamber (50).

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