Turbine refrigeration device

Abstract

The utility model discloses a turbine refrigeration device which comprises a driving mechanism, a compression mechanism and an expansion mechanism, the driving mechanism comprises a shell, a stator and a rotor, the stator is fixedly arranged in the shell, the rotor is coaxially arranged in the stator in a sleeved mode and is rotationally connected with the shell, and the two ends of a rotating shaft of the rotor penetrate through the shell respectively; the compression mechanism comprises a compression volute and a compression impeller, the compression volute is connected with one end of the shell, a compression inlet is formed in the compression volute in the axial direction, a compression outlet is formed in the compression volute in the circumferential direction, and the compression impeller is arranged in the compression volute and coaxially connected with the end of a rotating shaft of the rotor; the expansion mechanism comprises an expansion volute and an expansion impeller, the expansion volute is connected with the end, away from the compression volute, of the shell, an expansion inlet is formed in the expansion volute in the circumferential direction, an expansion outlet is formed in the expansion volute in the axial direction, and the expansion impeller is arranged in the expansion volute and coaxially connected with the end of a rotating shaft of the rotor. And the rotation directions of the compression volute and the expansion volute are opposite. The problems that a refrigerator is long in response time and low in refrigerating efficiency can be solved.

Description

Technical Field

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

[0002] At present, commonly used refrigerators generally use heat exchange to reduce the temperature of the airflow to prepare cold air. In the process, the heat exchange efficiency directly dominates the final cooling effect, and the key to determining the heat exchange efficiency lies mainly in the heat exchange stroke, heat exchange area and heat exchange time between the airflow and the heat exchange medium.

[0003] Existing refrigerators are generally optimized in terms of heat exchange stroke and heat exchange area. The method of extending the stroke while increasing the heat exchange area is used to make the airflow and the heat exchange medium fully contact and exchange heat, thereby improving the heat exchange effect. However, the above method will have the following problems: due to the limited air flow speed, extending the stroke will inevitably lead to a longer heat exchange time. At the same time, the air flow will rub against the flow channel wall during the flow process, causing the air flow to gradually slow down, and even produce turbulence, turbulence and backflow in the flow channel; at the same time, increasing the heat exchange area will also cause the air flow to reduce pressure and speed. Although the final heat exchange effect is relatively ideal, the heat exchange time is generally long, requiring a long time to respond, and the efficiency is low. Utility Model Content

[0004] The utility model aims to provide a turbine refrigeration device to solve the problems of long response time and low refrigeration efficiency of the existing refrigerator.

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

[0006] A turbine refrigeration device comprises a driving mechanism, the driving mechanism comprises a shell, a stator and a rotor, the stator is fixedly arranged in the shell, the rotor is coaxially sleeved in the stator and rotatably connected to the shell, and both ends of the rotating shaft of the rotor pass through the shell respectively; a compression mechanism, the compression mechanism comprises a compression volute and a compression impeller, the compression volute is connected to one end of the shell, the compression volute is provided with a compression inlet in the axial direction and a compression outlet in the circumferential direction, the compression impeller is arranged in the compression volute and is coaxially connected to the end of the rotating shaft of the rotor; an expansion mechanism, the expansion mechanism comprises an expansion volute and an expansion impeller, the expansion volute is connected to one end of the shell away from the compression volute, the expansion volute is provided with an expansion inlet in the circumferential direction and an expansion outlet in the axial direction, the expansion impeller is arranged in the expansion volute and is coaxially connected to the end of the rotating shaft of the rotor; the rotation direction of the compression volute is opposite to that of the expansion volute.

[0007] Optionally, a limiting disk is coaxially mounted on the rotating shaft of the rotor; a limiting ring groove matching the limiting disk is opened in the shell, and the limiting disk is coaxially inserted in the limiting ring groove and rotatably cooperates with the limiting ring groove.

[0008] Optionally, two end faces of the limiting ring groove are respectively provided with planar dynamic pressure bearings, and the limiting plate is clamped between the two planar dynamic pressure bearings.

[0009] Optionally, the shell is cylindrical, and the shell includes a thin-walled section and a limiting ring section; the inner diameter of the limiting ring section matches the diameter of the rotor shaft, and is coaxially rotated with the rotor shaft to form the limiting ring groove between the limiting ring section and the end surface of the stator, and the two planar dynamic pressure bearings are respectively arranged on the limiting ring section and the stator; the end of the limiting ring section away from the stator is connected to the compression volute or the expansion volute; the thin-walled section is coated on the outside of the stator and connected to the limiting ring section; when the limiting ring section is connected to the compression volute, the end of the thin-walled section away from the limiting ring section is connected to the expansion volute; when the limiting ring section is connected to the expansion volute, the end of the thin-walled section away from the limiting ring section is connected to the compression volute.

[0010] Optionally, the limiting ring segment is connected to the compression volute, and one end of the thin-wall segment away from the limiting ring segment is connected to the expansion volute.

[0011] Optionally, an anti-swing ring is coaxially sleeved inside one end of the thin-walled section connected to the expansion volute, the inner diameter of the anti-swing ring matches the diameter of the rotor shaft, and the anti-swing ring is coaxially rotatably sleeved outside the rotor shaft.

[0012] Optionally, the thin-walled section is connected to the expansion volute via the anti-sway ring.

[0013] Optionally, the thin-walled section is detachably connected to the limiting ring section; the thin-walled section is detachably connected to the stator; the thin-walled section is detachably connected to the anti-sway ring.

[0014] Optionally, the inner walls of the limiting ring segment and the anti-sway ring are coaxially sleeved with radial dynamic pressure bearings, respectively, and the radial dynamic pressure bearings are coaxially sleeved outside the rotating shaft of the rotor.

[0015] Optionally, the outer diameter of the compression volute is greater than the outer diameter of the expansion volute.

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

[0017] The turbine refrigeration device provided by the utility model is provided with a compression mechanism, and the air flow is pressurized while the air is sucked in, so as to obtain a high-temperature, high-pressure, and high-speed airflow, and the airflow in this state is introduced into the heat exchanger to perform heat exchange with the heat exchange medium. Since the airflow has a high-pressure and high-speed state, the relative speed between the airflow and the heat exchange medium is effectively increased, thereby improving the heat exchange efficiency between the two. On the one hand, the airflow will not take a long time even if it passes through a long stroke, and on the other hand, the flow state of the airflow can be effectively maintained to avoid turbulence, turbulence and backflow, thereby fully ensuring the heat exchange effect. In the process, the airflow can always maintain a high-speed flow, effectively shortening the heat exchange time, and effectively improving the heat exchange efficiency while ensuring the heat exchange effect. On this basis, by providing an expansion mechanism, the low-temperature, high-pressure, and high-speed airflow after the heat exchange is completed is expanded into a low-temperature, normal-pressure, and low-speed airflow for use by an environment or user that needs to cool down. On this basis, a driving mechanism is set, and a compression mechanism and an expansion mechanism are set to include a compression volute, a compression impeller and an expansion volute, an expansion impeller respectively, and a driving mechanism is set to include a casing, a stator and a rotor, and the casing is used to connect the compression volute and the expansion volute at the same time to provide structural fixation, and then the two ends of the rotor's rotating shaft are used to connect the compression impeller and the expansion impeller respectively, so as to drive the two to rotate synchronously, thereby improving the structural integrity while also improving the compactness of the structure, and enabling the compression mechanism and the expansion mechanism to start and stop synchronously to avoid unnecessary air pressure in the pipe connecting the two; by setting the compression volute and the expansion volute to have opposite rotation directions, the compression mechanism and the expansion mechanism can effectively realize their respective functions at the same time when the rotor rotates in one direction, without adjusting the rotation directions of the two ends of the rotor rotating shaft; through the mutual cooperation of the above-mentioned features, the turbine refrigeration device can effectively solve the problems of long response time and low refrigeration efficiency of existing refrigerators. 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 diagram of a turbine refrigeration device provided in an embodiment of the utility model;

[0020] Figure 2 A half-section schematic diagram of a turbine refrigeration device provided in an embodiment of the utility model.

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

[0022] 10-housing; 101-limiting ring groove; 102-plane dynamic pressure bearing; 103-thin-wall section; 104-limiting ring section; 105-anti-sway ring; 106-radial dynamic pressure bearing; 11-stator; 12-rotor; 121-limiting plate; 20-compression volute; 201-compression inlet; 202-compression outlet; 21-compression impeller; 30-expansion volute; 301-expansion inlet; 302-expansion outlet; 31-expansion impeller. 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 refrigeration device, comprising a driving mechanism, the driving mechanism comprising a housing 10, a stator 11 and a rotor 12, the stator 11 being fixedly arranged in the housing 10, the rotor 12 being coaxially sleeved in the stator 11 and rotatably connected to the housing 10, and the two ends of the rotating shaft of the rotor 12 respectively pass through the housing 10; the second embodiment comprises a compression mechanism, the compression mechanism comprising a compression volute 20 and a compression impeller 21, the compression volute 20 being connected to one end of the housing 10, the compression volute 20 being provided with a compression inlet 201 in the axial direction and a compression outlet 201 in the circumferential direction. The compression impeller 21 is arranged in the compression volute 20 and is coaxially connected to the end of the rotating shaft of the rotor 12; the third includes an expansion mechanism, the expansion mechanism includes an expansion volute 30 and an expansion impeller 31, the expansion volute 30 is connected to the end of the shell 10 away from the compression volute 20, the expansion volute 30 is provided with an expansion inlet 301 along the circumferential direction and an expansion outlet 302 along the axial direction, the expansion impeller 31 is arranged in the expansion volute 30 and is coaxially connected to the end of the rotating shaft of the rotor 12; the rotation direction of the compression volute 20 is opposite to that of the expansion volute 30.

[0026] The turbine refrigeration device provided in the present embodiment, by setting a compression mechanism, utilizes the compression mechanism to pressurize the air flow while sucking in air, thereby obtaining a high-temperature, high-pressure, and high-speed airflow, and passes the airflow in this state into the heat exchanger to perform contact and heat exchange with the heat exchange medium. Since the airflow is in a high-pressure and high-speed state, it will effectively increase its relative speed with the heat exchange medium, thereby improving the heat exchange efficiency between the two. On the one hand, the airflow will not take a long time even if it passes through a long stroke. On the other hand, it can effectively maintain the flow state of the airflow to avoid turbulence, turbulence and backflow, thereby fully ensuring the heat exchange effect. In the process, the airflow can always maintain high-speed flow, effectively shortening the heat exchange time, and effectively improving the heat exchange efficiency while ensuring the heat exchange effect. On this basis, by setting an expansion mechanism, the low-temperature, high-pressure, and high-speed airflow after the heat exchange is completed is expanded into a low-temperature, normal-pressure, and low-speed airflow for use in an environment or user that requires cooling. On this basis, by setting a driving mechanism, and setting The compression mechanism and the expansion mechanism respectively include a compression volute 20, a compression impeller 21 and an expansion volute 30, and an expansion impeller 31. The driving mechanism includes a housing 10, a stator 11 and a rotor 12. The housing 10 is connected to the compression volute 20 and the expansion volute 30 at the same time to provide structural fixation, and then the two ends of the rotating shaft of the rotor 12 are respectively connected to the compression impeller 21 and the expansion impeller 31 to drive the two to rotate synchronously, thereby improving the structural integrity and the compactness of the structure, and enabling the compression mechanism and the expansion mechanism to start and stop synchronously to avoid unnecessary air pressure in the pipeline connected between the two. By setting the compression volute 20 and the expansion volute 30 to have opposite rotation directions, the compression mechanism and the expansion mechanism can effectively realize their respective functions at the same time when the rotor 12 rotates in one direction, without adjusting the rotation directions of the two ends of the rotating shaft of the rotor 12. Through the mutual cooperation of the above-mentioned features, the turbine refrigeration device can effectively solve the problems of long response time and low refrigeration efficiency of the existing refrigerator.

[0027] In order to axially limit the rotor 12, and thus the compression impeller 21 and the expansion impeller 31, a limiting disk 121 is coaxially mounted on the rotating shaft of the rotor 12; a limiting ring groove 101 matching the limiting disk 121 is opened in the housing 10, and the limiting disk 121 is coaxially inserted in the limiting ring groove 101 and rotatably cooperates with the limiting ring groove 101.

[0028] In order to reduce friction, two end surfaces of the limiting ring groove 101 are respectively provided with planar dynamic pressure bearings 102 , and the limiting plate 121 is sandwiched between the two planar dynamic pressure bearings 102 .

[0029] In order to further explain the specific structure of the housing 10, the housing 10 is cylindrical, and includes a thin-walled section 103 and a limiting ring section 104; the inner diameter of the limiting ring section 104 matches the diameter of the rotating shaft of the rotor 12, and is coaxially rotated with the rotating shaft of the rotor 12, so that the limiting ring groove 101 is formed between the limiting ring section 104 and the end surface of the stator 11, and the two planar dynamic pressure bearings 102 are respectively arranged on the limiting ring section 104 and the stator 11; the limiting ring section 104 The end away from the stator 11 is connected to the compression volute 20 or the expansion volute 30; the thin-walled section 103 is covered on the outside of the stator 11 and connected to the limiting ring section 104; when the limiting ring section 104 is connected to the compression volute 20, the end of the thin-walled section 103 away from the limiting ring section 104 is connected to the expansion volute 30; when the limiting ring section 104 is connected to the expansion volute 30, the end of the thin-walled section 103 away from the limiting ring section 104 is connected to the compression volute 20.

[0030] Preferably, the limiting ring segment 104 is connected to the compression volute 20 , and one end of the thin-walled segment 103 away from the limiting ring segment 104 is connected to the expansion volute 30 .

[0031] In order to radially fix the other end of the rotor 12, an anti-swing ring 105 is coaxially sleeved inside the end of the thin-walled section 103 connected to the expansion volute 30, and the inner diameter of the anti-swing ring 105 matches the diameter of the rotating shaft of the rotor 12, and the anti-swing ring 105 is coaxially rotatably sleeved outside the rotating shaft of the rotor 12.

[0032] Preferably, the thin-walled section 103 is connected to the expansion volute 30 via the anti-sway ring 105 .

[0033] In order to facilitate loading and unloading, the thin-walled section 103 is detachably connected to the limiting ring section 104 ; the thin-walled section 103 is detachably connected to the stator 11 ; and the thin-walled section 103 is detachably connected to the anti-sway ring 105 .

[0034] Through the above arrangement, the thin-walled section 103 can be removed separately, thereby facilitating the assembly and disassembly of the stator 11 .

[0035] In order to further improve the smoothness of the rotation of the rotor 12 , the inner walls of the limiting ring segment 104 and the anti-sway ring 105 are coaxially sleeved with radial dynamic pressure bearings 106 , respectively. The radial dynamic pressure bearings 105 are coaxially sleeved outside the rotating shaft of the rotor 12 .

[0036] Preferably, the outer diameter of the compression volute 20 is greater than the outer diameter of the expansion volute 30 .

[0037] 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 refrigeration device, characterized in that: include: A driving mechanism, the driving mechanism comprising a housing (10), a stator (11) and a rotor (12), wherein the stator (11) is fixedly arranged in the housing (10), the rotor (12) is coaxially sleeved in the stator (11) and is rotatably connected to the housing (10), and both ends of a rotating shaft of the rotor (12) respectively penetrate the housing (10); A compression mechanism, the compression mechanism comprising a compression volute (20) and a compression impeller (21), the compression volute (20) being connected to one end of the housing (10), the compression volute (20) being provided with a compression inlet (201) in the axial direction and a compression outlet (202) in the circumferential direction, the compression impeller (21) being arranged in the compression volute (20) and being coaxially connected to the end of the rotating shaft of the rotor (12); an expansion mechanism, the expansion mechanism comprising an expansion volute (30) and an expansion impeller (31), the expansion volute (30) being connected to an end of the housing (10) away from the compression volute (20), the expansion volute (30) being provided with an expansion inlet (301) in the circumferential direction and an expansion outlet (302) in the axial direction, the expansion impeller (31) being arranged in the expansion volute (30) and being coaxially connected to an end of a rotating shaft of the rotor (12); The compression volute (20) and the expansion volute (30) have opposite rotation directions.

2. The turbo refrigeration device according to claim 1, characterized in that: The rotating shaft of the rotor (12) is coaxially mounted with a limiting disk (121); A limiting ring groove (101) matching the limiting disk (121) is provided in the housing (10); the limiting disk (121) is coaxially inserted in the limiting ring groove (101) and rotatably matched with the limiting ring groove (101).

3. The turbo refrigeration device according to claim 2, characterized in that: Two end surfaces of the limiting ring groove (101) are respectively provided with planar dynamic pressure bearings (102), and the limiting plate (121) is sandwiched between the two planar dynamic pressure bearings (102).

4. The turbo refrigeration device according to claim 3, characterized in that: The shell (10) is cylindrical, and comprises a thin-walled section (103) and a limiting ring section (104); The inner diameter of the limiting ring segment (104) matches the diameter of the rotating shaft of the rotor (12), and is coaxially rotatably mounted on the rotating shaft of the rotor (12), so that the limiting ring groove (101) is formed between the limiting ring segment (104) and the end surface of the stator (11), and the two planar dynamic pressure bearings (102) are respectively arranged on the limiting ring segment (104) and the stator (11); One end of the limiting ring segment (104) away from the stator (11) is connected to the compression volute (20) or the expansion volute (30); The thin-walled section (103) is coated on the outside of the stator (11) and is connected to the limiting ring section (104); When the limiting ring segment (104) is connected to the compression volute (20), one end of the thin-walled segment (103) away from the limiting ring segment (104) is connected to the expansion volute (30); When the limiting ring segment (104) is connected to the expansion volute (30), the end of the thin-walled segment (103) away from the limiting ring segment (104) is connected to the compression volute (20).

5. The turbo refrigeration device according to claim 4, characterized in that: The limiting ring segment (104) is connected to the compression volute (20), and one end of the thin-walled segment (103) away from the limiting ring segment (104) is connected to the expansion volute (30).

6. The turbo refrigeration device according to claim 5, characterized in that: An anti-swing ring (105) is coaxially sleeved inside one end of the thin-walled section (103) connected to the expansion volute (30); the inner diameter of the anti-swing ring (105) matches the diameter of the rotating shaft of the rotor (12); the anti-swing ring (105) is coaxially rotatably sleeved outside the rotating shaft of the rotor (12).

7. The turbo refrigeration device according to claim 6, characterized in that: The thin-walled section (103) is connected to the expansion volute (30) via the anti-sway ring (105).

8. The turbo refrigeration device according to claim 7, characterized in that: The thin-walled section (103) is connected to the limiting ring section (104) in a sealed and detachable manner; The thin-walled section (103) is detachably connected to the stator (11); The thin-walled section (103) is connected to the anti-sway ring (105) in a sealed and detachable manner.

9. The turbo refrigeration device according to claim 8, characterized in that: The inner walls of the limiting ring segment (104) and the anti-sway ring (105) are respectively coaxially sleeved with radial dynamic pressure bearings (106), and the radial dynamic pressure bearings (106) are coaxially sleeved outside the rotating shaft of the rotor (12).

10. The turbo refrigeration device according to claim 1, characterized in that: The outer diameter of the compression volute (20) is greater than the outer diameter of the expansion volute (30).

Images