Single cold type refrigerating device and refrigerating method

Abstract

The application discloses a single-cooling type refrigerating device and a refrigerating method, relates to the technical field of refrigeration and low-temperature engineering, and discloses a magnetic suspension bearing assembly, which is first suspended by a radial magnetic bearing and a thrust bearing without contact, thereby completely eliminating the friction of a traditional mechanical bearing, and the real-time feedback of a displacement sensor matched between the radial magnetic bearing and a main shaft can ensure that the main shaft is stable during high-speed rotation and reduce the loss of vibration, and meanwhile, the friction loss of the thrust bearing tends to be zero, further reducing the energy consumption of the whole machine, and the axial support does not need to involve lubricating oil, so that the situation that the oil film is blocked due to the entry of the lubricating oil into the meshing surface of the scroll disc is avoided, the radial magnetic bearing and the thrust bearing are uniformly controlled by a magnetic suspension controller, a full-dimension non-contact support system of radial constraint and axial balance is formed, and the magnetic suspension technology breaks through the performance bottleneck of a traditional scroll compressor and has significant advantages in energy efficiency, stability and service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration and low temperature engineering, in particular to a single cold type refrigeration device and a refrigeration method. BACKGROUND

[0002] As an application of refrigeration design technology, the refrigeration device mainly studies and selects the performance matching of the main machine and the auxiliary machine, and has different pipeline connections to form different characteristic refrigeration systems. It is a device closely combined with building, structure, water supply and drainage, heating ventilation, mechanical transmission, power and lighting, and automatic control, and is the crystallization of multidisciplinary research. With the continuous growth of the national economy, refrigeration devices have been widely used in industry, agriculture, commerce, science and technology, and people's life, especially in food refrigeration and air conditioning, which is directly related to the needs of industrial production and people's life in many departments.

[0003] The single cold type refrigeration device is a refrigeration equipment that only has refrigeration function and cannot realize heating or other climate adjustment function. Its core function is to transfer heat from the target space to the external environment through refrigeration cycle, thereby realizing the effect of cooling.

[0004] However, the prior art has the following disadvantages:

[0005] In the existing single cold type refrigeration device, the traditional mechanical bearing and the main shaft are in physical contact, and different degrees of frictional resistance will be generated during operation, especially the friction loss during high-speed operation, which will directly lead to the decrease of the actual work efficiency of the compressor, and the metal debris generated by wear will mix into the lubricating oil and enter other key components with the oil, thereby aggravating the wear of the components, and even causing fatal failures such as compressor cylinder jamming and gas leakage, resulting in frequent shutdown and maintenance, which will greatly affect the work needs, increase the cost of machine and labor cost, and at the same time, in summer, the exhaust temperature of the compressor will continuously increase, but the angle of the condenser is fixed, and the heat dissipation efficiency cannot be effectively improved, at this time, the increase of the condensation temperature will lead to the increase of the exhaust pressure of the compressor, at this time, the compressor needs to increase the motor power to overcome the high pressure difference, which will lead to the continuous increase of energy consumption, and in spring and autumn, the environmental temperature is relatively low, the fixed angle condenser may cause excessive heat dissipation, resulting in excessive liquefaction of the refrigerant in the condenser, thereby causing the compressor to be prone to liquid knock risk, affecting the service life of the core components.

[0006] Therefore, we propose a single cold type refrigeration device and a refrigeration method to solve the problems in the above. SUMMARY

[0007] The application aims to provide a single cold type refrigeration device and refrigeration method, and a magnetic suspension bearing assembly, which can completely eliminate the friction of traditional mechanical bearings by contactless suspension of radial magnetic bearings and thrust bearings, and can ensure the stability of the main shaft during high-speed rotation and reduce the loss of vibration by real-time feedback of displacement sensors matched between the radial magnetic bearings and the main shaft, and further reduce the energy consumption of the whole machine by approaching to zero of the friction loss of the thrust bearings, and avoid the oil film blockage caused by the lubricating oil entering the meshing surface of the scroll disc.

[0008] To achieve the above object, the application provides the following technical scheme: a single cold type refrigeration device, comprising a magnetic suspension bearing assembly, a self-adaptive angle adjusting assembly and a base, the top of the base is respectively provided with the magnetic suspension bearing assembly and the self-adaptive angle adjusting assembly, and the self-adaptive angle adjusting assembly is arranged on one side of the outer wall of the magnetic suspension bearing assembly.

[0009] The magnetic suspension bearing assembly comprises two first magnetic yokes, two groups of first electromagnetic coils, a second magnetic yoke, a group of second electromagnetic coils, a third magnetic yoke, a fourth magnetic yoke and a group of third electromagnetic coils, the two first magnetic yokes are used for improving the radial magnetic field strength, the two groups of first electromagnetic coils are used for generating a radial magnetic field, and the two first magnetic yokes and the two groups of first electromagnetic coils form two radial magnetic bearings, the second magnetic yoke and the fourth magnetic yoke are used for improving the axial magnetic field strength, the group of second electromagnetic coils and the group of third electromagnetic coils are used for generating an axial magnetic field, and the second magnetic yoke and the group of second electromagnetic coils and the fourth magnetic yoke and the group of third electromagnetic coils form two thrust magnetic bearings.

[0010] The self-adaptive angle adjusting assembly comprises four hydraulic cylinders, the shaft end of each of the four hydraulic cylinders is sleeved with a first spherical hinge joint, and the four first spherical hinge joints are used for providing multi-degree-of-freedom angle adjusting capability.

[0011] Preferably, the top of the base is fixedly welded with four supports, the top of each of the four supports is connected with a top plate, the top of the base is provided with a supporting seat, the top of the supporting seat is fixedly connected with a compressor shell, and the top of the base is provided with a condenser.

[0012] Preferably, the magnetic suspension bearing assembly further comprises four fixing members, four first supports, four second supports and a rack, the outer wall of each of the four fixing members is fixedly packaged with a permanent magnet motor, the outer wall of each of the four fixing members is connected with the inner surface of the compressor shell, the output end of the permanent magnet motor is rotationally connected with a main shaft, the top and the bottom of the permanent magnet motor are respectively connected with the bottom and the top of a corresponding first magnetic yoke, and the inner surface of each of the two first magnetic yokes is connected with a group of magnetic poles.

[0013] Preferably, the outer surfaces of the two groups of first magnetic yokes are connected with the inner surfaces of a corresponding group of first electromagnetic coils, one end of the two groups of first electromagnetic coils is connected with an inner magnetic yoke, the outer surfaces of the two inner magnetic yokes are provided with a first position sensor, there is a circle of activity space between the inner surfaces of the two inner magnetic yokes and the outer surface of the main shaft, the top of the four first supports is connected with the bottom of the second magnetic yoke, the outer surfaces of the four first supports are connected with the inner surface of the compressor shell, the inner wall top of the second magnetic yoke is connected with a group of first permanent magnets, the outer surfaces of a group of first permanent magnets are connected with the inner surfaces of a group of second electromagnetic coils.

[0014] Preferably, there is a circle of activity space between the inner surfaces of a group of first permanent magnets and the outer surface of the main shaft, the outer surface of the main shaft is sleeved with a thrust plate, the bottom of the thrust plate is embedded with a group of second permanent magnets, the outer surface of the thrust plate is provided with a group of tooth-shaped grooves, the bottom of the four second supports is connected with the top of the third magnetic yoke, the outer surfaces of the four second supports are connected with the inner surface of the compressor shell, the outer surface of the third magnetic yoke is fixedly installed with a second position sensor, and the top of the third magnetic yoke is fixedly installed with a vibration acceleration sensor.

[0015] Preferably, the inner surfaces of the third magnetic yoke are connected with the outer surfaces of a group of fourth magnetic yokes and a group of third electromagnetic coils, respectively, and there is a circle of activity space between the inner surfaces of a group of fourth magnetic yokes and a group of third electromagnetic coils and the outer surface of the main shaft, the bottom of the main shaft is rotatably connected with an eccentric shaft, the top of the eccentric shaft is rotatably connected with a bellows coupling, the top of the bellows coupling is rotatably connected with a moving scroll, the top of the rack is slidably connected with a cross slip ring, and the outer surface of the rack is connected with the inner surface of the compressor shell.

[0016] Preferably, the moving scroll is slidably connected with the cross slip ring, the top of the moving scroll is engagedly connected with a static scroll, the outer surface of the static scroll is connected with the inner surface of the compressor shell, the top of the static scroll is communicated with an exhaust port, the gas outlet end of the exhaust port is communicated with a connecting pipeline, the gas inlet end of the connecting pipeline is communicated with an oil separator, one side of the outer wall of the oil separator is connected with the outer surface of the compressor shell, and the bottom of the oil separator is communicated with an oil return pipeline.

[0017] Preferably, the self-adaptive angle adjusting assembly further comprises an air inlet pipeline, the gas inlet end of the air inlet pipeline is connected with a corrugated pipeline, the gas inlet end of the air inlet pipeline is communicated with the gas outlet end of the oil separator, one side of the outer wall of each of the four hydraulic cylinders is connected with an electromagnetic valve, the bottoms of the four hydraulic cylinders are connected with the top of the base, and the top of each of the four first ball hinge joints is connected with a transition abutment.

[0018] Preferably, the outer wall of the transition base is fixedly provided with an angle sensor, the top of the transition base is connected with four second spherical hinge joints, the top of each of the four second spherical hinge joints is fixedly connected with an air spring damper, the top of each of the four air spring dampers is connected with a third spherical hinge joint, and the top of the four third spherical hinge joints is connected with the bottom of the condenser.

[0019] A refrigeration method of a single cold type refrigeration device, comprising the following steps:

[0020] Step one: low-loss power transmission, the main shaft is driven to rotate by a permanent magnet motor, the main shaft is suspended in a radial non-contact suspension gap by a radial magnetic bearing composed of a first magnetic yoke, a first electromagnetic coil and a magnetic pole, axial force balance is achieved by a thrust magnetic bearing composed of a second magnetic yoke, a second electromagnetic coil, a fourth magnetic yoke, a third electromagnetic coil and a second permanent magnet on a thrust plate, mechanical friction loss is completely eliminated, a first position sensor monitors the radial displacement of the main shaft in real time, a magnetic suspension controller dynamically adjusts the current of the electromagnetic coil, and high-speed stable rotation of the main shaft is ensured, the driving scroll plate is driven to mesh with the fixed scroll plate to compress refrigerant;

[0021] Step two: high-efficiency refrigerant compression, the driving scroll plate moves smoothly under the constraint of a cross slip ring, forms a compression chamber with gradually reducing volume with the fixed scroll plate, and compresses low-pressure refrigerant from the suction end to a high-temperature and high-pressure state, the compressed refrigerant is discharged from the exhaust port and enters the inside of an oil separator;

[0022] Step three: oil separation and lubrication cycle optimization, the compressed gas-liquid mixture enters the inside of the oil separator, lubricating oil is separated from refrigerant gas through centrifugal separation, the separated lubricating oil flows back to the meshing surface of the driving scroll plate and the fixed scroll plate through an oil return pipeline, lubrication and sealing of the key friction pair are realized, refrigerant leakage caused by mechanical contact wear is avoided, and then the purified high-temperature refrigerant gas enters the inside of a condenser through a connecting pipeline and an inlet pipeline to perform heat dissipation work;

[0023] Step four: adaptive angle adjustment of heat dissipation enhancement, the heat dissipation efficiency of the condenser is dynamically optimized through the adaptive angle adjustment assembly, wherein the magnetic suspension controller collects the compressor core parameters in real time, the exhaust temperature is monitored by the temperature sensor, and the vibration data is monitored by the vibration acceleration sensor, and the data is transmitted to the linkage controller of the condenser through the bus, when the exhaust temperature exceeds the threshold value or the heat dissipation demand increases, the controller drives the four hydraulic cylinders to perform lifting action, wherein the hydraulic cylinders drive the transition base to tilt through the first spherical hinge joint, the first spherical hinge joint provides three-dimensional rotation freedom, and the angle sensor feeds back the tilt angle of the condenser in real time, finally the condenser heat dissipation surface is adjusted to the optimal windward angle, and the heat exchange efficiency is improved, the air spring damper and the second spherical hinge joint and the third spherical hinge joint above it cooperate to absorb the vibration generated by the compressor shell and compensate for the thermal deformation of the condenser, so as to avoid leakage caused by stress concentration of the pipeline interface.

[0024] Compared with the prior art, the beneficial effects of the present application are:

[0025] 1、In the present application, by setting the magnetic suspension bearing assembly, firstly through the non-contact suspension of the radial magnetic bearing and the thrust bearing, the friction of the traditional mechanical bearing is completely eliminated, and the real-time feedback of the displacement sensor between the radial magnetic bearing and the main shaft can ensure that the main shaft remains stable during high-speed rotation and reduce the loss of vibration, while the friction loss of the thrust bearing tends to be zero, further reducing the energy consumption of the whole machine, without the participation of lubricating oil in the axial support, avoiding the situation that the oil film is blocked due to the lubricating oil entering the meshing surface of the scroll disc, the radial magnetic bearing and the thrust bearing are controlled by the magnetic suspension controller, forming a full-dimensional non-contact support system with radial constraint and axial balance. This magnetic suspension technology breaks through the performance bottleneck of traditional scroll compressors and has significant advantages in energy efficiency, stability and service life.

[0026] 2、In the present application, by setting the adaptive angle adjustment assembly, when the exhaust temperature of the compressor rises, the condenser can automatically tilt to face the wind, which greatly improves the heat dissipation efficiency, directly reduces the condensing pressure, reduces the exhaust back pressure of the compressor, and continuously reduces the energy consumption of the motor, when the compressor has different vibrations, the damper of the condenser can reduce the transmission of vibration, effectively avoiding the fatigue cracking of the pipe weld and the wear of the magnetic suspension bearing of the compressor caused by vibration deviation, thereby significantly prolonging the service life of the system. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a front view structure perspective view of a single cold type refrigeration device according to the present application;

[0028] Figure 2 It is a front view structure perspective view of a single cold type refrigeration device according to the present application;

[0029] Figure 3It is a single cold type refrigeration device in the application magnetic suspension bearing assembly structure perspective view;

[0030] Figure 4 It is a single cold type refrigeration device in the application fixed part, permanent magnet motor, main shaft installation position structure schematic diagram;

[0031] Figure 5 It is a single cold type refrigeration device in the application dynamic scroll, static scroll, exhaust installation position structure schematic diagram;

[0032] Figure 6 It is a single cold type refrigeration device in the application magnetic suspension bearing assembly structure explosion view;

[0033] Figure 7 It is a single cold type refrigeration device in the application Figure 6 A structure amplification perspective view;

[0034] Figure 8 It is a single cold type refrigeration device in the application Figure 6 B structure amplification perspective view;

[0035] Figure 9 It is a single cold type refrigeration device in the application Figure 6 C structure amplification perspective view;

[0036] Figure 10 It is a single cold type refrigeration device in the application Figure 5 D structure amplification perspective view;

[0037] Figure 11 It is a single cold type refrigeration device in the application Figure 6 E structure amplification perspective view;

[0038] Figure 12 It is a single cold type refrigeration device in the application self-adapting angle adjusting assembly structure perspective view;

[0039] Figure 13 It is a single cold type refrigeration device in the application hydraulic cylinder, first spherical hinge joint, transition base installation position structure schematic diagram;

[0040] Figure 14 It is a single cold type refrigeration device in the application second spherical hinge joint, air spring resistance device, third spherical hinge joint installation position structure schematic diagram;

[0041] Figure 15 It is a single cold type refrigeration device in the application Figure 14 F structure amplification perspective view.

[0042] In the figure: 100, base; 200, support; 300, top plate; 400, support seat; 500, compressor shell; 600, condenser; 700, magnetic suspension bearing assembly; 701, fixing piece; 702, permanent magnet motor; 703, main shaft; 704, first magnetic yoke; 705, magnetic pole; 706, first electromagnetic coil; 707, first position sensor; 708, second magnetic yoke; 709, first support frame; 710, first permanent magnet; 711, second electromagnetic coil; 712, thrust plate; 713, second permanent magnet; 714, third magnetic yoke; 715, second support frame; 716, second position sensor; 717, vibration acceleration sensor; 718, eccentric shaft; 719, bellows coupling; 720, rack; 721, cross slip ring; 722, moving scroll; 723, stationary scroll; 724, exhaust port; 725, connecting pipeline; 726, oil separator; 727, oil return pipeline; 728, fourth magnetic yoke; 729, third electromagnetic coil; 800, adaptive angle adjusting assembly; 801, hydraulic cylinder; 802, first spherical hinge joint; 803, transition abutment; 804, second spherical hinge joint; 805, air spring damper; 806, third spherical hinge joint; 807, angle sensor; 808, electromagnetic valve; 809, air inlet pipeline; 810, corrugated pipeline. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0044] Embodiment 1, mainly aims at, the traditional mechanical bearing and the main shaft 703 exist physical contact, when running, different degrees of frictional resistance will be generated, especially in high speed operation, this friction loss, will directly lead to the actual work efficiency of the compressor decline, and the metal debris produced by abrasion will mix into the lubricating oil, with oil into other key components, so as to aggravate the wear of parts, even can cause the compressor cylinder, gas leakage and other fatal failure, lead to frequent downtime maintenance, this will greatly affect the work needs, increase the cost of machine and labor cost;

[0045] The embodiment is completed to solve the problems of the prior art, by setting the magnetic suspension bearing assembly 700, first by the non-contact suspension of the radial magnetic bearing and the thrust bearing, the friction of the traditional mechanical bearing is completely eliminated, and the real-time feedback of the first position sensor 707 and the second position sensor 716 matched between the radial magnetic bearing and the main shaft 703 can ensure that the main shaft 703 remains stable when rotating at high speed and reduces the loss of vibration, while the friction loss of the thrust bearing tends to be zero, further reducing the energy consumption of the whole machine, without the participation of lubricating oil in the axial support, avoiding the oil film blockage caused by the lubricating oil entering the meshing surface of the scroll disc, the radial magnetic bearing and the thrust bearing are uniformly controlled by the magnetic suspension controller, forming a full-dimensional non-contact support system of radial constraint and axial balance. This magnetic suspension technology breaks through the performance bottleneck of the traditional scroll compressor and has significant advantages in energy efficiency, stability and service life.

[0046] Referring to Figures 1-2 As shown in the drawings, the present application provides a technical solution: a single cold type refrigeration device, comprising a magnetic suspension bearing assembly 700, a self-adaptive angle adjusting assembly 800, and a base 100, the top of the base 100 is respectively provided with the magnetic suspension bearing assembly 700 and the self-adaptive angle adjusting assembly 800, and the self-adaptive angle adjusting assembly 800 is arranged on one side of the outer wall of the magnetic suspension bearing assembly 700.

[0047] Four supports 200 are fixedly welded on the top of the base 100, the top of the four supports 200 is connected with a top plate 300, a support seat 400 is arranged on the top of the base 100, the top of the support seat 400 is fixedly connected with a compressor shell 500, and the top of the base 100 is provided with a condenser 600.

[0048] In use, first, the specific installation position of the base 100 is determined, then the magnetic suspension bearing assembly 700 and the self-adaptive angle adjusting assembly 800 are installed on the top of the base 100 in sequence, after all the components are installed, the base 100 is fixed to the ground, and the magnetic suspension bearing assembly 700 is fully arranged in the interior of the compressor shell 500, so that it is fully fixed and connected, then the self-adaptive angle adjusting assembly 800 is fully arranged at the bottom of the condenser 600, and the purpose of the full fixation of the base 100 is to provide effective support force for the connected components, so as to ensure the stability of the magnetic suspension bearing assembly 700 and the self-adaptive angle adjusting assembly 800 in the subsequent working process.

[0049] In some embodiments, according to 1- Figure 11As shown, the magnetic suspension bearing assembly 700 comprises two first magnetic yokes 704, two groups of first electromagnetic coils 706, a second magnetic yoke 708, a group of second electromagnetic coils 711, a third magnetic yoke 714, a fourth magnetic yoke 728, a group of third electromagnetic coils 729, the two first magnetic yokes 704 are used to enhance the radial magnetic field strength, the two groups of first electromagnetic coils 706 are used to generate the radial magnetic field, and the two first magnetic yokes 704 and the two groups of first electromagnetic coils 706 constitute two radial magnetic bearings, the second magnetic yoke 708 and the fourth magnetic yoke 728 are used to enhance the axial magnetic field strength, the group of second electromagnetic coils 711 and the group of third electromagnetic coils 729 are used to generate the axial magnetic field, and the second magnetic yoke 708 and the group of second electromagnetic coils 711 and the fourth magnetic yoke 728 and the group of third electromagnetic coils 729 constitute two thrust magnetic bearings.

[0050] The magnetic suspension bearing assembly 700 further comprises four fixed parts 701, four first supporting frames 709, four second supporting frames 715, a frame 720, the outer walls of the four fixed parts 701 are fixedly provided with the permanent magnet motor 702, the outer walls of the four fixed parts 701 are connected to the inner surface of the compressor shell 500, the output end of the permanent magnet motor 702 is rotationally connected with the main shaft 703, the top and bottom of the permanent magnet motor 702 are respectively connected to the bottom and top of the corresponding one of the two first magnetic yokes 704, and the inner surfaces of the two first magnetic yokes 704 are respectively connected with a group of magnetic poles 705.

[0051] The outer surfaces of the two groups of first magnetic yokes 704 are connected to the inner surfaces of the corresponding group of first electromagnetic coils 706, and one end of each of the two groups of first electromagnetic coils 706 is connected with an inner magnetic yoke, the outer surfaces of the two inner magnetic yokes are respectively provided with first position sensors 707, and there is a circle of active space between the inner surfaces of the two inner magnetic yokes and the outer surface of the main shaft 703, the top of the four first supporting frames 709 is connected to the bottom of the second magnetic yoke 708, and the outer surfaces of the four first supporting frames 709 are connected to the inner surface of the compressor shell 500, the inner wall top of the second magnetic yoke 708 is connected with a group of first permanent magnets 710, and the outer surfaces of the group of first permanent magnets 710 are connected to the inner surfaces of the group of second electromagnetic coils 711.

[0052] There is a circle of active space between the inner surfaces of the group of first permanent magnets 710 and the outer surface of the main shaft 703, the outer surface of the main shaft 703 is sleeved with a thrust plate 712, the bottom of the thrust plate 712 is embedded with a group of second permanent magnets 713, the outer surface of the thrust plate 712 is provided with a group of tooth-shaped grooves, the bottom of the four second supporting frames 715 is connected to the top of the third magnetic yoke 714, and the outer surfaces of the four second supporting frames 715 are connected to the inner surface of the compressor shell 500, the outer surface of the third magnetic yoke 714 is fixedly provided with a second position sensor 716, and the top of the third magnetic yoke 714 is fixedly provided with a vibration acceleration sensor 717.

[0053] The inner surface of the third magnetic yoke 714 is connected with the outer surface of a set of fourth magnetic yokes 728 and a set of third electromagnetic coils 729 respectively, and there is a circle of active space between the inner surface of the set of fourth magnetic yokes 728 and the set of third electromagnetic coils 729 and the outer surface of the main shaft 703, the bottom of the main shaft 703 is rotationally connected with an eccentric shaft 718, the top of the eccentric shaft 718 is rotationally connected with a bellows coupling 719, the top of the bellows coupling 719 is rotationally connected with a moving scroll 722, the top of a frame 720 is slidingly connected with a slip ring 721, and the outer surface of the frame 720 is connected with the inner surface of the compressor shell 500.

[0054] The moving scroll 722 is slidingly connected with the slip ring 721, the top of the moving scroll 722 is meshingly connected with a stationary scroll 723, and the outer surface of the stationary scroll 723 is connected with the inner surface of the compressor shell 500, the top of the stationary scroll 723 is communicated with an exhaust port 724, the gas outlet end of the exhaust port 724 is communicated with a connecting pipeline 725, the gas inlet end of the connecting pipeline 725 is communicated with an oil separator 726, one side of the outer wall of the oil separator 726 is connected with the outer surface of the compressor shell 500, and the bottom of the oil separator 726 is communicated with an oil return pipeline 727.

[0055] In use, by presetting the above components, a complete magnetic suspension bearing assembly 700 is formed, the permanent magnet motor 702 is packaged and fixed in the compressor shell 500 by four fixing members 701, the output end thereof is rigidly connected with the main shaft 703, and the permanent magnet motor 702 can provide core driving force for the compressor, when the permanent magnet motor 702 operates, a rotating torque is generated through electromagnetic induction, the main shaft 703 is driven to rotate at a high speed in a designed speed range, the radial stability of the main shaft 703 is realized by two groups of radial magnetic bearings, two first magnetic yokes 704 are symmetrically arranged at the top and bottom of the permanent magnet motor 702, a group of magnetic poles 705 are connected to the inner surface of the magnetic yoke, two groups of first electromagnetic coils 706 are wound on the outer surface of the magnetic yoke, the first magnetic yoke 704 is made of high magnetic permeability silicon steel sheets and can improve the magnetic field strength generated by the coils, a uniformly distributed radial magnetic field is formed through the magnetic poles 705, then after the two groups of first electromagnetic coils 706 are connected with controllable current, an alternating electromagnetic field is generated, and the main shaft 703 forms a magnetic force of the same nature repelling each other and different nature attracting each other, so that the main shaft 703 is suspended in the active space between the inner magnetic yoke and the main shaft 703, the radial mechanical friction is completely eliminated, the first position sensor 707 installed on the outer surface of the inner magnetic yoke monitors the radial offset of the main shaft 703 in real time, after the data is fed back to the magnetic suspension controller, the controller adjusts the coil current through the PID algorithm, ensures that the radial vibration of the main shaft 703 is controlled, and the main shaft 703 can avoid collision with the magnetic yoke, the axial force of the thrust magnetic bearing balances the axial stability of the main shaft 703, which is realized by the cooperation of the upper and lower groups of thrust magnetic bearings, the thrust bearing at the bottom is composed of a second magnetic yoke 708, a group of first permanent magnets 710 and a group of second electromagnetic coils 711.The second magnetic yoke 708 is fixed to the compressor shell 500 by four first braces 709, the first permanent magnet 710 on the inner wall thereof provides a basic axial pre-tightening force, the second electromagnetic coil 711 wound thereon dynamically compensates axial force fluctuation by current adjustment, the top thrust bearing is composed of a third magnetic yoke 714, a fourth magnetic yoke 728 and a set of third electromagnetic coils 729, the third magnetic yoke 714 is fixed by four second braces 715, the fourth magnetic yoke 728 cooperates with the third electromagnetic coils 729 to generate a reverse magnetic field, forming a balanced resultant force with the bottom thrust bearing, the thrust plate 712 sleeved on the outer surface of the main shaft 703 has the second permanent magnet 713 embedded at the bottom thereof, forming a magnetic coupling with the first permanent magnet 710 of the bottom thrust bearing, and the top thereof interacts with the magnetic field generated by the third electromagnetic coils 729, when the main shaft 703 produces an axial offset, the second position sensor 716 on the outer surface of the third magnetic yoke 714 feeds back a displacement signal in real time, the controller adjusts the currents of the second electromagnetic coil 711 and the third electromagnetic coil 729, so as to promote the stability of the axial gap, the vibration acceleration sensor 717 on the top of the third magnetic yoke 714 monitors the vibration range of the system in real time, when the vibration value exceeds a threshold value, the controller triggers a speed reduction protection to avoid resonance damage to components, the bottom of the main shaft 703 is connected with the bellows coupling 719 through the eccentric shaft 718, the top of the bellows coupling 719 is rigidly connected with the moving scroll 722, when the main shaft 703 rotates, the eccentric shaft 718 converts the rotary motion into a planar smooth motion of the moving scroll 722, the bellows coupling 719 compensates for installation errors through flexible deformation, so as to ensure the smooth motion of the moving scroll 722, the moving scroll 722 is in sliding cooperation with the cross slip ring 721 on the top of the rack 720, the cross slip ring 721 limits the rotary degree of freedom of the moving scroll 722 through a guide groove, so that the moving scroll 722 only makes a smooth motion along the end surface of the static scroll 723, the high-pressure refrigerant is finally discharged from the exhaust port 724 at the center of the static scroll 723, completing a compression cycle, and then the compressed high-temperature refrigerant containing a small amount of lubricating oil enters the connecting pipeline 725 through the exhaust port 724, is transported to the oil separator 726 outside the compressor shell 500, the oil separator 726 separates oil and gas through the spiral centrifugal separation principle, and the separated lubricating oil flows back to the meshing surface of the moving scroll 722 and the static scroll 723 through the oil return pipeline 727, forming an oil film seal and lubrication.

[0056] In the summer, the compressor discharge temperature will continue to rise, but the angle of the condenser 600 is fixed, and the heat dissipation efficiency cannot be effectively improved. At this time, the condensation temperature rises, which causes the compressor discharge pressure to increase. At this time, the compressor needs to increase the motor power to overcome this high pressure difference, which will cause the energy consumption to continue to increase. In the spring and autumn, the ambient temperature is relatively low, and the fixed angle condenser 600 may cause the condensation temperature to be too low due to excessive heat dissipation, so that the refrigerant is excessively liquefied in the condenser 600, thereby causing the compressor to be prone to liquid hammer risk, affecting the service life of the core components.

[0057] The embodiment is completed to solve the problems of the prior art. By setting the adaptive angle adjusting assembly 800, when the compressor exhaust temperature rises, the condenser 600 can be automatically inclined to face the wind, so as to greatly improve the heat dissipation efficiency, which directly reduces the condensing pressure, reduces the exhaust back pressure of the compressor, and continuously reduces the power consumption of the motor. When the compressor vibrates, the air spring damper 805 of the condenser 600 can reduce the transmission of vibration, effectively avoid the fatigue cracking of the pipeline weld, and the wear of the radial magnetic bearing and the thrust magnetic bearing of the compressor caused by vibration offset, thereby significantly prolonging the service life of the system.

[0058] In some embodiments, according to 1- Figure 2 And Figures 12-15 As shown in the figure, the adaptive angle adjusting assembly 800 includes four hydraulic cylinders 801, and the shaft end of each of the four hydraulic cylinders 801 is sleeved with a first spherical hinge joint 802. The four first spherical hinge joints 802 are used to provide multi-degree-of-freedom angle adjusting capability.

[0059] The adaptive angle adjusting assembly 800 further includes an air inlet pipeline 809, the air inlet end of the air inlet pipeline 809 is connected with a corrugated pipeline 810, the air inlet end of the air inlet pipeline 809 is in communication with the air outlet end of the oil liquid separator 726, the outer wall of each of the four hydraulic cylinders 801 is connected with an electromagnetic valve 808, the bottom of each of the four hydraulic cylinders 801 is connected with the top of the base 100, and the top of each of the four first spherical hinge joints 802 is connected with a transition base 803.

[0060] The outer wall of the transition base 803 is fixedly installed with an angle sensor 807, the top of the transition base 803 is bolted with four second spherical hinge joints 804, the top of each of the four second spherical hinge joints 804 is fixedly connected with an air spring damper 805, the top of each of the four air spring dampers 805 is connected with a third spherical hinge joint 806, and the top of each of the four third spherical hinge joints 806 is connected with the bottom of the condenser 600.

[0061] In use, through the above-mentioned components, a complete adaptive angle adjusting assembly 800 is formed, which is used as the core adjusting mechanism of the condenser 600. The four hydraulic cylinders 801 are fixed at the top of the base 100, and the shaft ends are connected with the transition base 803 through the first spherical hinge joint 802. The outer wall of the hydraulic cylinder 801 is equipped with an electromagnetic valve 808 on one side to control the extension and retraction action. The transition base 803 is connected with the air spring damper 805 through four second spherical hinge joints 804 at the top. The air spring damper 805 is fixed at the bottom of the condenser 600 through a third spherical hinge joint 806, forming a complete flexible support chain. The high-temperature refrigerant discharged by the compressor is separated by the oil separator 726, and then transported to the condenser 600 through the air inlet pipeline 809 and the corrugated pipeline 810. The corrugated pipeline 810 can compensate for the displacement of the pipeline during angle adjustment. The transition base 803 is equipped with an angle sensor 807 on the outer wall. The angle sensor 807 can be used to monitor the inclination angle of the condenser 600 in real time. When the high-temperature environment in summer causes the exhaust temperature of the compressor to rise, the system starts the heat dissipation enhancement process at this time. The compressor controller collects exhaust temperature data in real time through the temperature sensor. When it is detected that the temperature continues to exceed the threshold value, an angle adjusting instruction is sent to the adaptive angle adjusting assembly 800. The electromagnetic valve 808 controls the differential extension and retraction of the four hydraulic cylinders 801. Through the multi-degree-of-freedom rotation characteristics of the first spherical hinge joint 802, the transition base 803 is driven to tilt towards the windward direction. The current inclination angle is fed back in real time by the angle sensor 807. The extension and retraction amount of the hydraulic cylinder 801 is fine-tuned through the PID algorithm until the angle is stable. When the ambient temperature is low in spring and autumn, and the condensation temperature is below the threshold value, the electromagnetic valve 808 controls the hydraulic cylinder 801 to retract, so that the condenser 600 tilts towards the leeward direction. At this time, the heat dissipation efficiency is reduced, which can avoid excessive liquefaction of the refrigerant in the condenser 600. When the compressor vibrates due to load and other factors, the compressor vibration acceleration sensor 717 detects that the vibration value exceeds the threshold value, and the signal is transmitted to the adaptive angle adjusting assembly 800. The air spring damper 805 converts the vibration energy into heat energy through the elastic deformation of the internal air cavity and the throttling effect of the damping hole, so as to reduce the vibration transmission rate between the condenser 600 and the compressor.

[0062] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some of the technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A single cold type refrigeration device, comprising a magnetic suspension bearing assembly (700), an adaptive angle adjusting assembly (800), a base (100), characterized in that: The top of the base (100) is respectively provided with a magnetic suspension bearing assembly (700) and an adaptive angle adjusting assembly (800), and the adaptive angle adjusting assembly (800) is arranged on one side of the outer wall of the magnetic suspension bearing assembly (700); The magnetic suspension bearing assembly (700) comprises two first magnetic yokes (704), two groups of first electromagnetic coils (706), a second magnetic yoke (708), a group of second electromagnetic coils (711), a third magnetic yoke (714), a fourth magnetic yoke (728) and a group of third electromagnetic coils (729), the two first magnetic yokes (704) are used for improving the radial magnetic field strength, the two groups of first electromagnetic coils (706) are used for generating a radial magnetic field, and the two first magnetic yokes (704) and the two groups of first electromagnetic coils (706) constitute two radial magnetic bearings, the second magnetic yoke (708) and the fourth magnetic yoke (728) are used for improving the axial magnetic field strength, the group of second electromagnetic coils (711) and the group of third electromagnetic coils (729) are used for generating an axial magnetic field, and the second magnetic yoke (708) and the group of second electromagnetic coils (711) and the fourth magnetic yoke (728) and the group of third electromagnetic coils (729) constitute two thrust magnetic bearings; The magnetic suspension bearing assembly (700) further comprises four fixing members (701), four first support frames (709), four second support frames (715) and a rack (720), the outer walls of the four fixing members (701) are fixedly provided with a permanent magnet motor (702), the outer walls of the four fixing members (701) are connected with the inner surface of the compressor shell (500), the output end of the permanent magnet motor (702) is rotatably connected with a main shaft (703), the top and bottom of the permanent magnet motor (702) are connected with the bottom and top of a corresponding first magnetic yoke (704) respectively, and the inner surface of each of the two first magnetic yokes (704) is connected with a group of magnetic poles (705); The outer surface of each of the two first magnetic yokes (704) is connected with the inner surface of a corresponding group of first electromagnetic coils (706), and one end of each of the two groups of first electromagnetic coils (706) is connected with an inner magnetic yoke, the outer surface of each of the two inner magnetic yokes is provided with a first position sensor (707), and there is a circle of active space between the inner surface of each of the two inner magnetic yokes and the outer surface of the main shaft (703), the top of each of the four first support frames (709) is connected with the bottom of the second magnetic yoke (708), and the outer surface of each of the four first support frames (709) is connected with the inner surface of the compressor shell (500), the inner wall top of the second magnetic yoke (708) is connected with a group of first permanent magnets (710), and the outer surface of the group of first permanent magnets (710) is connected with the inner surface of a group of second electromagnetic coils (711); The adaptive angle adjusting assembly (800) comprises four hydraulic cylinders (801), the shaft end of each of the four hydraulic cylinders (801) is sleeved with a first spherical hinge joint (802), and the four first spherical hinge joints (802) are used for providing multi-degree-of-freedom angle adjusting capability.

2. The single refrigeration type refrigerating device according to claim 1, characterized by: The top of the base (100) is fixedly welded with four supports (200), the top of the four supports (200) is connected with a top plate (300), the top of the base (100) is provided with a supporting seat (400), the top of the supporting seat (400) is fixedly connected with a compressor shell (500), and the top of the base (100) is provided with a condenser (600).

3. The single refrigeration type refrigerating apparatus according to claim 1, characterized by: There is a circle of activity space between the inner surfaces of the first permanent magnet (710) and the outer surface of the main shaft (703), the outer surface of the main shaft (703) is sleeved with a thrust plate (712), the bottom of the thrust plate (712) is embedded with a group of second permanent magnets (713), the outer surface of the thrust plate (712) is provided with a group of tooth-shaped grooves, the bottom of the four second supports (715) is connected with the top of the third magnetic yoke (714), the outer surfaces of the four second supports (715) are connected with the inner surface of the compressor shell (500), the outer surface of the third magnetic yoke (714) is fixedly installed with a second position sensor (716), and the top of the third magnetic yoke (714) is fixedly installed with a vibration acceleration sensor (717).

4. The single refrigeration type refrigerating apparatus according to claim 3, characterized by: The inner surfaces of the third magnetic yoke (714) are connected with the outer surfaces of a group of fourth magnetic yokes (728) and a group of third electromagnetic coils (729) respectively, and there is a circle of activity space between the inner surfaces of the group of fourth magnetic yokes (728) and the group of third electromagnetic coils (729) and the outer surface of the main shaft (703), the bottom of the main shaft (703) is rotatably connected with an eccentric shaft (718), the top of the eccentric shaft (718) is rotatably connected with a bellows coupling (719), the top of the bellows coupling (719) is rotatably connected with a moving scroll (722), the top of the rack (720) is slidably connected with a cross slip ring (721), and the outer surface of the rack (720) is connected with the inner surface of the compressor shell (500).

5. The single refrigeration type refrigerating apparatus according to claim 4, wherein: The moving scroll (722) is slidably connected with the cross slip ring (721), the top of the moving scroll (722) is engagedly connected with a stationary scroll (723), and the outer surface of the stationary scroll (723) is connected with the inner surface of the compressor shell (500), the top of the stationary scroll (723) is communicated with an exhaust port (724), the gas outlet end of the exhaust port (724) is communicated with a connecting pipeline (725), the gas inlet end of the connecting pipeline (725) is communicated with an oil separator (726), one side of the outer wall of the oil separator (726) is connected with the outer surface of the compressor shell (500), and the bottom of the oil separator (726) is communicated with an oil return pipeline (727).

6. The single refrigeration type refrigerating apparatus according to claim 1, characterized by: The adaptive angle adjusting assembly (800) further comprises an air inlet pipe (809), a corrugated pipe (810) connected to the gas outlet end of the air inlet pipe (809), and the air inlet end of the air inlet pipe (809) is in communication with the air outlet end of the oil separator (726), the outer wall of each of the four hydraulic cylinders (801) is connected with an electromagnetic valve (808), the bottom of each of the four hydraulic cylinders (801) is connected with the top of the base (100), and the top of each of the four first spherical hinge joints (802) is connected with a transition base (803).

7. The single refrigeration type refrigerating apparatus according to claim 6, wherein: An angle sensor (807) is fixedly installed on one side of the outer wall of the transition base (803), four second spherical hinge joints (804) are bolted to the top of the transition base (803), an air spring damper (805) is fixedly connected to the top of each of the four second spherical hinge joints (804), a third spherical hinge joint (806) is connected to the top of each of the four air spring dampers (805), and the top of each of the four third spherical hinge joints (806) is connected with the bottom of the condenser (600).

8. A refrigeration method of a single cold type refrigeration device, characterized by: A single cold type refrigeration device according to any one of claims 1-7 is used, comprising the following steps: S1: low-loss power transmission, the permanent magnet motor (702) drives the main shaft (703) to rotate, the main shaft (703) is balanced in the axial direction through a radial magnetic bearing composed of a first magnetic yoke (704), a first electromagnetic coil (706) and a magnetic pole (705), and a thrust magnetic bearing composed of a second magnetic yoke (708), a second electromagnetic coil (711), a fourth magnetic yoke (728), a third electromagnetic coil (729) and a second permanent magnet (713) on a thrust plate (712), and mechanical friction loss is completely eliminated, wherein a first position sensor (707) monitors the radial displacement of the main shaft (703) in real time, a magnetic suspension controller dynamically adjusts the current of the electromagnetic coil, and the high-speed stable rotation of the main shaft (703) is ensured to drive the driving vortex disc (722) and the static vortex disc (723) to mesh to compress the refrigerant; S2: high-efficiency refrigerant compression, the driving vortex disc (722) moves smoothly under the constraint of the cross slip ring (721), and forms a compression chamber with gradually decreasing volume with the static vortex disc (723), so that the low-pressure refrigerant is compressed from the suction end to a high-temperature and high-pressure state, and the compressed refrigerant is discharged from the exhaust port (724) and enters the inside of the oil separator (726); S3: oil separation and lubrication cycle optimization, the compressed gas-liquid mixture enters the inside of the oil separator (726), and the lubricating oil is separated from the refrigerant gas through centrifugal separation, the separated lubricating oil flows back to the meshing surface of the driving vortex disc (722) and the static vortex disc (723) through the oil return pipeline (727), the lubrication and sealing of the key friction pair are realized, the refrigerant leakage caused by mechanical contact wear is avoided, and then the purified high-temperature refrigerant gas enters the inside of the condenser (600) through the connecting pipeline (725) and the air inlet pipe (809) to perform heat dissipation work. S4: Adaptive angle adjustment of heat dissipation enhancement, the heat dissipation efficiency of the condenser (600) is dynamically optimized through the adaptive angle adjustment assembly (800), wherein the magnetic suspension controller collects the compressor core parameters in real time, the exhaust temperature is monitored by the temperature sensor and the vibration data is monitored by the vibration acceleration sensor (717), and the data is transmitted to the linkage controller of the condenser (600) through the bus. When the exhaust temperature exceeds the threshold value or the heat dissipation demand increases, the controller drives the four hydraulic cylinders (801) to perform lifting action, wherein the hydraulic cylinders (801) drive the transition base (803) to tilt through the first ball hinge joint (802), the first ball hinge joint (802) provides three-dimensional rotation freedom, and the angle sensor (807) is used to feedback the tilt angle of the condenser (600) in real time. Finally, the heat dissipation surface of the condenser (600) is adjusted to the optimal wind-approaching angle, and the heat exchange efficiency is improved. The air spring damper (805) cooperates with the second ball hinge joint (804) and the third ball hinge joint (806) above and below to absorb the vibration generated by the compressor shell (500) and compensate for the thermal deformation of the condenser (600), thereby avoiding leakage caused by stress concentration of the pipeline interface.

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