Magnetic suspension turbocharging device for refrigerating machine

Abstract

The magnetic suspension turbocharging device comprises a shell, a direct-current permanent magnet synchronous motor is installed in the shell, and a motor controller and an integrated frequency conversion controller are installed on the top and the outer side of the shell respectively. The motor controller and the integrated frequency conversion controller are electrically connected with the direct-current permanent magnet synchronous motor. According to the magnetic suspension turbocharging device for the refrigerating machine, the integrated frequency conversion controller can control the turbocharging frequency of the turbocharging mechanism driven by the direct-current permanent magnet synchronous motor to a refrigerant, and when the integrated frequency conversion controller is damaged, the protective shell can be rapidly disassembled by controlling the positioning disassembly and assembly mechanism; and after the protection shell is installed through the positioning dismounting and mounting mechanism, the installation stability of the protection shell can be guaranteed through mutual cooperation of a limiting seat and a limiting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, in particular to a magnetic levitation turbocharging device for a refrigerator. Background Technique

[0002] A refrigerator mainly consists of a compressor, a condenser, a refrigeration heat exchanger, an expander or a throttling mechanism, and auxiliary equipment. The compressor can pressurize the refrigerant to achieve a refrigeration cycle. There are various types of compressors, including a magnetic levitation turbocharged compressor, which can improve the use effect by preventing direct contact friction between the shaft and the bearing. However, there are still certain defects in the existing magnetic levitation turbocharging device for a refrigerator during use;

[0003] For example, a magnetic levitation turbocharging for a refrigerator proposed in the application number CN202320738739.7, an integrated frequency converter controller is arranged above the permanent magnet synchronous motor, and a heat insulation structure is arranged between the integrated frequency converter controller and the permanent magnet synchronous motor. In the utility model, a split support seat is used to support the bearing, and the magnetic levitation bearing is set as a detachable intermediate carrier composed of two semi-circular arcs for fixing the coil. This method enables the two intermediate carriers to be detached from the upper and lower sides of the magnetic levitation shaft rod for easy coil replacement. By setting a support ring that can be disassembled to both sides, removing the locking nuts at one end of the shaft seat positioning rods on both sides of the support ring, the two support rings can be disassembled in the direction away from each other, causing the intermediate carrier between the two support rings to lose the limit on both sides, realizing the rapid detachment of the magnetic levitation shaft rod without removing the support base of the magnetic levitation bearing, which can reduce the working difficulty of bearing replacement. In the actual use process, although this application improves the convenience of bearing replacement, the integrated frequency converter controller at the top is prone to damage during use, and it is not convenient to quickly disassemble and decompose the outer shell in this application, thereby reducing the maintenance convenience of the integrated frequency converter controller.

[0004] Therefore, we propose a magnetic levitation turbocharging device for a refrigerator to solve the problems raised above. Content of the Utility Model

[0005] The purpose of the utility model is to provide a magnetic levitation turbocharging device for a refrigerator to solve the problem that it is not convenient to quickly repair a damaged integrated frequency converter controller proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A magnetic levitation turbocharging device for a refrigerator, including a housing,

[0007] A DC permanent magnet synchronous motor is installed inside the housing. A motor controller and an integrated frequency conversion controller are respectively installed on the top and the outside of the housing. Both the motor controller and the integrated frequency conversion controller are electrically connected to the DC permanent magnet synchronous motor. A turbocharging mechanism is connected to the front end of the DC permanent magnet synchronous motor. A connecting seat is connected to the outer ring of the turbocharging mechanism. An inlet is opened at the front end of the connecting seat. The bottom of the housing and the connecting seat are fixedly connected with a mounting seat;

[0008] A protective shell is wrapped and installed outside the integrated frequency conversion controller. A limiting seat is fixedly inlaid inside the top corner of the protective shell. A limiting rod penetrates through the inside of the limiting seat. The bottom end of the limiting rod is fixedly connected to the top surface of the housing;

[0009] The protective shell and the housing are connected by a positioning disassembly and assembly mechanism.

[0010] Preferably, the turbocharging mechanism includes a magnetic suspension shaft rod fixedly connected to the shaft end of the DC permanent magnet synchronous motor. A magnetic suspension bearing is sleeved outside the DC permanent magnet synchronous motor. The outer ring of the magnetic suspension bearing is fixedly connected to the housing. A double supercharger impeller is fixedly connected to the front end of the magnetic suspension shaft rod. A channel is arranged outside the double supercharger impeller. The channel is opened inside the connecting seat. An outlet is opened inside the connecting seat at the top of the rear end of the channel.

[0011] Preferably, the magnetic suspension shaft rod and the magnetic suspension bearing form a magnetic suspension rotating structure. The double supercharger impeller cooperates with the channel, the outlet and the inlet to form a refrigerant supercharging circulation structure.

[0012] With the design of the above structure, the DC permanent magnet synchronous motor can cooperate with the motor controller and the integrated frequency conversion controller to open and close the turbocharging mechanism and perform variable-frequency rotation, so as to facilitate the adjustment of the compression cycle frequency of the refrigerant, improve the practicability of the magnetic suspension turbocharging device for the refrigerator, and at the same time, the setting of the turbocharging mechanism can avoid mechanical contact during rotation and eliminate the need for a lubrication system, improving the use effect.

[0013] Preferably, the protective shell is slidably connected to the limiting rod through the limiting seat. The inner ring size of the limiting seat is consistent with the outer ring size of the limiting rod.

[0014] With the design of the above structure, when installing the protective shell, the limiting rod cooperates with the limiting seat to limit the protective shell, preventing the protective shell from shaking, and improving the installation stability and protection stability of the protective shell.

[0015] Preferably, the positioning disassembly and assembly mechanism includes fixing plates symmetrically installed in the grooves at the top of the protective shell. A threaded rod passes through the inside of the fixing plate. The inner end of the threaded rod is fixedly connected to a movable rod. A sleeve is sleeved outside the movable rod. The outer end of the threaded rod is connected to a connecting shaft. A clamping plate is sleeved outside the connecting shaft. Positioning rods are fixedly installed inside both sides of the clamping plate. The positioning rods are slidably connected to the fixing plate.

[0016] Preferably, the threaded rod is threadedly connected to the fixing plate. The clamping plate is slidably connected to the fixing plate in cooperation with the positioning rods. The bottom end of the clamping plate is snap-fitted with the top end of the housing.

[0017] With the design of the above structure, it is convenient to control the engagement and separation between the positioning disassembly and assembly mechanism and the top of the housing, so as to realize the installation and disassembly of the protective shell, which is beneficial to the convenient maintenance of the integrated frequency converter controller when it is damaged. At the same time, it effectively protects the integrated frequency converter controller during the installation of the protective shell, improving the protection effect.

[0018] Compared with the prior art, the beneficial effects of the present utility model are: the magnetic levitation turbocharging device for a refrigerating machine;

[0019] 1. The motor controller can effectively control the direct current permanent magnet synchronous motor, so that the direct current permanent magnet synchronous motor can drive the turbocharging mechanism to rotate, thereby facilitating the extraction of the refrigerant through the inlet and the output of the refrigerant in a turbocharged manner. The mutual cooperation of the magnetic levitation bearing and the magnetic levitation shaft rod in the turbocharging mechanism can effectively reduce friction and can not use a lubrication structure, improving the use effect and boosting effect of the magnetic levitation turbocharging device for a refrigerating machine;

[0020] 2. The integrated frequency converter controller can control the boosting frequency of the refrigerant by the direct current permanent magnet synchronous motor driving the turbocharging mechanism. When the integrated frequency converter controller is damaged, the quick disassembly of the protective shell can be realized by controlling the positioning disassembly and assembly mechanism, which is beneficial to the convenient maintenance of the internal integrated frequency converter controller. After the protective shell is installed through the positioning disassembly and assembly mechanism, the mutual cooperation of the limit seat and the limit rod can ensure the installation stability of the protective shell, ensuring the protection effect and stability of the protective shell on the integrated frequency converter controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic side view structure diagram of the present utility model;

[0022] Figure 2 It is a schematic distribution structure diagram of the side section of the housing and the turbocharging mechanism of the present utility model;

[0023] Figure 3 It is a schematic side view structure diagram of the turbocharging mechanism of the present utility model;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the protective shell and the outer shell of the present utility model;

[0025] Figure 5 This is a schematic side-sectional view of the positioning disassembly and assembly mechanism of the present utility model.

[0026] In the figure: 1. Outer shell; 2. DC permanent magnet synchronous motor; 3. Motor controller; 4. Frequency conversion controller; 5. Turbocharging mechanism; 501. Magnetic suspension shaft rod; 502. Magnetic suspension bearing; 503. Double supercharger impeller; 504. Channel; 505. Outlet; 6. Connecting seat; 7. Inlet; 8. Mounting seat; 9. Protective shell; 10. Limit seat; 11. Limit rod; 12. Positioning disassembly and assembly mechanism; 1201. Fixed plate; 1202. Threaded rod; 1203. Movable rod; 1204. Sleeve; 1205. Connecting shaft; 1206. Clamping plate; 1207. Positioning rod. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-5 , the present utility model provides a technical solution: a magnetic levitation turbocharging device for a refrigerator, including an outer shell 1, a DC permanent magnet synchronous motor 2 is installed inside the outer shell 1, a motor controller 3 and an integrated frequency conversion controller 4 are respectively installed on the top and the outside of the outer shell 1, both the motor controller 3 and the integrated frequency conversion controller 4 are electrically connected to the DC permanent magnet synchronous motor 2, a turbocharging mechanism 5 is connected to the front end of the DC permanent magnet synchronous motor 2, the turbocharging mechanism 5 includes a magnetic suspension shaft rod 501 fixedly connected to the shaft end of the DC permanent magnet synchronous motor 2, a magnetic suspension bearing 502 is sleeved on the outer ring of the DC permanent magnet synchronous motor 2, the outer ring of the magnetic suspension bearing 502 is fixedly connected to the outer shell 1, the magnetic suspension shaft rod 501 and the magnetic suspension bearing 502 form a magnetic levitation rotating structure, a double supercharger impeller 503 is fixedly connected to the front end of the magnetic suspension shaft rod 501, a channel 504 is arranged on the outer ring of the double supercharger impeller 503, the channel 504 is opened inside the connecting seat 6, an outlet 505 is opened inside the connecting seat 6 at the top of the rear end of the channel 504, the outer ring of the turbocharging mechanism 5 is connected to the connecting seat 6, an inlet 7 is opened at the front end of the connecting seat 6, the double supercharger impeller 503 cooperates with the channel 504, the outlet 505 and the inlet 7 to form a refrigerant pressurization circulation structure, and a mounting seat 8 is fixedly connected to the bottom of the outer shell 1 and the connecting seat 6;

[0029] The design of the above structure enables the opening and closing of the DC permanent magnet synchronous motor 2 to be controlled by the motor controller 3, and the rotation speed of the DC permanent magnet synchronous motor 2 to be controlled by the integrated frequency conversion controller 4. Furthermore, when the DC permanent magnet synchronous motor 2 operates, it drives the magnetic suspension shaft rod 501 to rotate inside the magnetic suspension bearing 502 in a non-mechanical contact manner, and drives the double-boost impeller 503 at the front end to rotate. Then, the double-boost impeller 503 rotates inside the channel 504 to generate suction, extracts the refrigerant from the outside through the inlet 7, and performs two-stage boosting through the cooperation of the double-boost impeller 503 and the channel 504. Finally, it is discharged through the outlet 505 to achieve the cyclic boosting work of the refrigerant.

[0030] A protective shell 9 is wrapped and installed around the outer circle of the integrated frequency conversion controller 4. Inside the top corners of the protective shell 9, a limit seat 10 is fixedly inlaid. A limit rod 11 passes through the inside of the limit seat 10. The protective shell 9 is slidably connected to the limit rod 11 through the limit seat 10. The inner diameter of the limit seat 10 matches the outer diameter of the limit rod 11. The bottom end of the limit rod 11 is fixedly connected to the top surface of the outer shell 1.

[0031] The design of the above structure enables the protective shell 9 to be slid out from the limit rod 11 through the limit seat 10 for disassembly when the protective shell 9 is disassembled. When installed, the limit rod 11 can limit the installed protective shell 9 through the limit seat 10, effectively preventing the protective shell 9 from shaking and improving the protection stability of the protective shell 9 for the integrated frequency conversion controller 4.

[0032] The protective shell 9 and the outer shell 1 are connected by a positioning disassembly and assembly mechanism 12. The positioning disassembly and assembly mechanism 12 includes fixing plates 1201 symmetrically installed in the top grooves of the protective shell 9. A threaded rod 1202 passes through the inside of the fixing plate 1201. The threaded rod 1202 is threadedly connected to the fixing plate 1201. The inner end of the threaded rod 1202 is fixedly connected to a movable rod 1203. A sleeve 1204 is sleeved outside the movable rod 1203. The outer end of the threaded rod 1202 is connected to a connecting shaft 1205. A clamping plate 1206 is sleeved outside the connecting shaft 1205. Positioning rods 1207 are fixedly installed inside both sides of the clamping plate 1206. The positioning rods 1207 are slidably connected to the fixing plate 1201. The clamping plate 1206 cooperates with the positioning rods 1207 to be slidably and limitedly connected to the fixing plate 1201. The bottom end of the clamping plate 1206 is snap-fitted to the top end of the outer shell 1.

[0033] The design of the above structure enables, when repairing the integrated frequency conversion controller 4, by rotating the sleeve 1204, using the keyed sliding connection between the sleeve 1204 and the movable rod 1203, to drive the threaded rods 1202 at both ends to perform threaded rotational movement inside the fixed plate 1201, and drive the clamping plate 1206 to move outward through the connecting shaft 1205 at the outer end, releasing the engagement between the bottom end of the clamping plate 1206 and the housing 1, so as to be able to disassemble the protective shell 9 to achieve convenient repair of the internal integrated frequency conversion controller 4. When installing and positioning the protective shell 9, by rotating the sleeve 1204 in the reverse direction, using the movable rod 1203 to drive the threaded rod 1202 to move inward inside the fixed plate 1201, and then cooperating with the connecting shaft 1205 to drive the clamping plate 1206 to engage with the housing 1 to achieve the positioning installation of the protective shell 9. Among them, the positioning rod 1207 can perform limiting sliding with the fixed plate 1201 during the movement of the clamping plate 1206, thus ensuring the stability of the movement of the clamping plate 1206.

[0034] Thus, a series of operations are completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0035] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A magnetically suspended turbocharger for a refrigerator, comprising a housing (1), characterized in that: A DC permanent magnet synchronous motor (2) is installed inside the housing (1); a motor controller (3) and an integrated frequency conversion controller (4) are installed on the top and outside of the housing (1) respectively; the motor controller (3) and the integrated frequency conversion controller (4) are both electrically connected to the DC permanent magnet synchronous motor (2); a turbocharger mechanism (5) is connected to the front end of the DC permanent magnet synchronous motor (2); an outer ring of the turbocharger mechanism (5) is connected to a connecting seat (6); an inlet (7) is provided at the front end of the connecting seat (6); and a mounting seat (8) is fixedly connected to the bottom of the housing (1) and the connecting seat (6); The outer ring of the integrated frequency conversion controller (4) is wrapped with a protective shell (9), a limit seat (10) is fixedly embedded inside the top corner of the protective shell (9), a limit rod (11) penetrates the inside of the limit seat (10), and the bottom end of the limit rod (11) is fixedly connected to the top surface of the housing (1); The protective shell (9) and the outer shell (1) are connected via a positioning and disassembly mechanism (12).

2. The magnetic levitation turbocharger for a refrigerator according to claim 1, characterized in that: The turbocharger mechanism (5) comprises a magnetic suspension shaft (501) fixedly connected to the shaft end of a DC permanent magnet synchronous motor (2); the outer ring of the DC permanent magnet synchronous motor (2) is sleeved with a magnetic suspension bearing (502); the outer ring of the magnetic suspension bearing (502) is fixedly connected to the housing (1); the front end of the magnetic suspension shaft (501) is fixedly connected to a dual-boost impeller (503); the outer ring of the dual-boost impeller (503) is provided with a channel (504); the channel (504) is opened inside a connecting seat (6); and an outlet (505) is opened inside the connecting seat (6) at the top of the rear end of the channel (504).

3. The magnetic levitation turbocharger for a refrigerator according to claim 2, characterized in that: The magnetic suspension shaft (501) and the magnetic suspension bearing (502) form a magnetic suspension rotating structure, and the double boost impeller (503) cooperates with the channel (504), the outlet (505) and the inlet (7) to form a refrigerant boost circulation structure.

4. The magnetic levitation turbocharger for a refrigerator according to claim 1, characterized in that: The protective shell (9) is slidably connected to the limiting rod (11) via a limiting seat (10), and the inner ring size of the limiting seat (10) matches the outer ring size of the limiting rod (11).

5. The magnetic levitation turbocharger for a refrigerator according to claim 1, characterized in that: The positioning and disassembly mechanism (12) comprises a fixed plate (1201) symmetrically installed in the top groove of the protective shell (9), a threaded rod (1202) passes through the interior of the fixed plate (1201), the inner end of the threaded rod (1202) is fixedly connected to a movable rod (1203), the outer ring of the movable rod (1203) is sleeved with a sleeve (1204), the outer end of the threaded rod (1202) is connected to a connecting shaft (1205), the outer ring of the connecting shaft (1205) is sleeved with a clamping plate (1206), and positioning rods (1207) are fixedly installed inside both sides of the clamping plate (1206), and the positioning rods (1207) are slidably connected to the fixed plate (1201).

6. The magnetic levitation turbocharger for a refrigerator according to claim 5, characterized in that: The threaded rod (1202) is threadedly connected to the fixed plate (1201), the clamping plate (1206) cooperates with the positioning rod (1207) to be limitedly slidably connected to the fixed plate (1201), and the bottom end of the clamping plate (1206) is clamped and connected to the top end of the housing (1).

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